Abraham Lincoln Research Paper Example | Topics and Well Written Essays - 500 words

Abraham Lincoln - Research Paper Example The article has also discussed about his role in binding both the North and the South and peace which has been brought due to his efforts. However, despite his mild and good-hearted character, his followers seem to be provoked on his death and efforts were made subsequently to change his character and his nature. For example, many attempted to make a pious and religious man despite the fact that he was not interested in being following religion the way people were following it. (Time) Article by Jon Swaine which appeared in Telegraph on Feb 11, 2011 suggested that till his last days, Lincoln wanted free black slaves to be shipped to British colonies. This article suggests that though Lincoln was an anti-slavery politician who took practical efforts to denounce slavery in the country and freed four million slaves in America however, was interested in idea of sending slaves to British colonies. The overall purpose of this idea was to disallow blacks to live among American whites. This therefore creates an impression that Lincoln was supporter of colonialism and relatively held racist views about blacks. This article attempts to challenge one of the key assumptions about Lincoln and his overall images which emerged over the period of time. (Swaine) The article â€Å"Lincoln Reconsidered† discusses about his time as a politician before and during civil war. This essay argues about the basic political philosophies of Lincoln and argues against the popular notion that Lincoln was an archetypal republican and a person who attempted to reconstruct the ideological differences between different groups within the country. Author therefore gives an entirely different version about the way he considers Lincoln as the republican or not. Author argues that it was not only Lincoln who was advocating against slavery and other ills of American society at that time but Newspapers as well as other Republicans were also voicing same concerns. (Holt) The above articles

Meaning of life Essay Example for Free

Meaning of life Essay Aristotle’s account of motion can be found in the Physics. By motion, Aristotle (384-322 BCE) understands any kind of change. He defines motion as the actuality of a potentiality. Initially, Aristotle’s definition seems to involve a contradiction. However, commentators on the works of Aristotle, such as St. Thomas Aquinas, maintain that this is the only way to define motion. In order to adequately understand Aristotle’s definition of motion it is necessary to understand what he means by actuality and potentiality. Aristotle uses the words energeia and entelechiainterchangeably to describe a kind of action. A linguistic analysis shows that, by actuality, Aristotle means both energeia, which means being-at-work, and entelechia, which means being-at-an-end. These two words, although they have different meanings, function as synonyms in Aristotle’s scheme. For Aristotle, to be a thing in the world is to be at work, to belong to a particular species, to act for an end and to form material into enduring organized wholes. Actuality, for Aristotle, is therefore close in meaning to what it is to be alive, except it does not carry the implication of mortality. From the Middle Ages to modern times, commentators disagreed on the interpretation of Aristotle’s account of motion. An accurate rendering of Aristotle’s definition must include apparently inconsistent propositions: (a) that motion is rest, and (b) that a potentiality, which must be, if anything, a privation of actuality, is at the same time that actuality of which it is the lack. St. Thomas Aquinas was prepared to take these propositions seriously. St. Thomas observes that to say that something is in motion is just to say that it is both what it is already and something else that it is not yet. Accordingly, motion is the mode in which the future belongs to the present, it is the present absence of just those particular absent things which are about to be. St. Thomas thus resolves the apparent contradiction between potentiality and actuality in Aristotle’s definition of motion by arguing that in every motion actuality and potentiality are mixed or blended. St.Thomas’ interpretation of Aristotle’s definition of motion, however, is not free of difficulties. His interpretation seems to trivialize the meaning of entelechia. One implication of this interpretation is that whatever happens to be the case right now is an entelechia, as though something which is intrinsically unstable as the instantaneous position of an arrow in flight deserved to be described by the word which Aristotle everywhere else reserves for complex organized states which persist, which hold out in being against internal and external causes tending to destroy them. In the Metaphysics, however, Aristotle draws a distinction between two kinds of potentiality. On the one hand, there are latent or inactive potentialities. On the other hand, there are active or at-work potentialities. Accordingly, every motion is a complex whole, an enduring unity which organizes distinct parts. Things have being to the extent that they are or are part of determinate wholes, so that to be means to be something, and change has being because it always is or is part of some determinate potentiality, at work and manifest in the world as change.

The Aims Of Writing A Literature Review Education Essay

The Aims Of Writing A Literature Review Education Essay What is review of the literature? A literature review is a write-up that aims to review the critical aspects of current knowledge on a particular topic. Its an account of what has been published on a topic by accredited scholars and researchers. Most often associated with science-oriented literature, such as a thesis, the literature review usually precedes a research proposal, methodology and results section. The purpose is to bring the reader up to date with current literature on a topic and form the basis for future research that may be needed in the area. A good literature review is characterized by: a logical flow of ideas; current and relevant references with consistent, appropriate referencing style; proper use of terminology; and an unbiased and comprehensive view of the previous research on the topic. It is not just a descriptive list of the material available, or a set of summaries. Besides enlarging your knowledge about the topic, writing a literature review lets you gain and demonstrate skills in two areas Information seeking: the ability to scan the literature efficiently, using manual or computerized methods, to identify a set of useful articles and books Critical appraisal: the ability to apply principles of analysis to identify unbiased and valid studies. A literature review must do these things Be organized around and related directly to the thesis or research question you are developing Synthesize results into a summary of what is and is not known Identify areas of controversy in the literature Formulate questions that need further research A literature review is a piece of discursive prose, not a list describing or summarizing one piece of literature after another. Its usually a bad sign to see every paragraph beginning with the name of a researcher. Instead, organize the literature review into sections that present themes or identify trends, including relevant theory. You are not trying to list all the material published, but to synthesize and evaluate it according to the guiding concept of your thesis or research question If you are writing an annotated bibliography, you may need to summarize each item briefly, but should still follow through themes and concepts and do some critical assessment of material. Use an overall introduction and conclusion to state the scope of your coverage and to formulate the question, problem, or concept your chosen material illuminates. Usually you will have the option of grouping items into sections-this helps you indicate comparisons and relationships. You may be able to write a paragraph or so to introduce the focus of each section How to do a literature search? Defining the topic In order to begin your literature review you must first define your research question. What is the purpose? What does it mean? What are the key words? Are there other words which could be used, such as synonyms, variations in spelling? What do you already know about the topic? What is the scope? Compiling a list of keywords Analyzing the topic of an essay question or research topic usually involves making a list of keywords or phrases. You will need to include all the key concepts or ideas contained within the essay or research question. It might be useful to include alternative ways of phrasing and expressing concepts and ideas. Think about both general terms and very specific terms for broadening and narrowing your search. The keyword or phrase is the basic unit of any search. You may find it helpful to consult subject dictionaries and encyclopedias, or a textbook glossary for the common terminology of the subject area. The use of an index and/or thesaurus is also advisable to establish the useful terms. Identifying Resources Information is available in a number of formats. It is important for you to understand the significance of various formats so that you know what will best suit your information requirements. Books Reference Materials Journals Conference Papers Dissertations Internet Indexes/Abstracts Printed Electronic Databases Government publications Thesis Putting tables and figures If you found the table or figure in a source, or if you developed the information in the table or figure from a source other than your own primary research, you must cite the full source just below the table or figure, and again include the full source in your list of references at the end of the thesis. Table number and headline is always mentioned on top of the table. Figure number and headline is mentioned at bottom of the figure. The source reference below the figure/table should be in a smaller font, in a bracket, in italics. Like this: Table 4: Numbers Unemployed in Co. Roscommon, 2000 2004 Electoral District Male Age range Female Age range Total (Source: Jones, D. 2004. Impact of unemployment in rural areas of Connacht 2000 2004. Dublin: Folens, p. 56.) Figure 4: Air Supply in Burma (June 1944 to April 1945) (Source: Jones, D. 2004. Environmental Concerns. Dublin: Folens, p. 56.) 2. Bibliography Formats Each citation in a bibliography has to describe a resource in enough detail that someone can go to a library (or out on the net, or to a bookstore), and see it for themselves. Imagine going to a bookshop and saying, Hi. I need that book on World War II. You know, the one that mentions Hitler? Thats why the specifics-formats, titles, authors, dates, etc.- are important. Writing the assessment: What do I need to reference? When you are writing your assessment, be sure to type in reference information as you add in the ideas of other authors. This will save you time and will ensure that you reference all sources properly. Whenever you use someone elses ideas or words, you must put in a reference. The only exception to this rule is when the information you have read somewhere is common knowledge or public domain information. For example, you would not need to include a reference if you stated in an assignment that Shakespeare wrote plays and sonnets in Elizabethan times. You must always reference the following (i) Direct quotations this is when you copy another authors material word-for-word. You should show the reader that it is a direct quote by placing the material in inverted commas. Traditionally, double inverted commas have been used () but it is now acceptable, and preferable to use single inverted commas (). Sometimes it is difficult to avoid the direct quotation as the authors words may precisely describe the point you are trying to make. However, do try to avoid the overuse of direct quotations; try to paraphrase the authors work where possible. Please note that when you use direct quotations, you must reproduce the authors words exactly, including all spelling, capitalisation, punctuation, and errors. You may show the reader that you recognise an error and that you are correctly quoting the author by placing the term sic in brackets after the error. (ii) Paraphrasing this is when you take another authors ideas and put them into your own words. You are still copying someone elses work, so you must reference it. You do not need to use inverted commas when you paraphrase, but you must clearly show the reader the original source of your information. 1. INTERNET RESOURCES In the easy-come, easy -go world of the free internet, dates and addresses are particularly important. Two dates are required: the date that the material was published or updated, and the date on which you actually used it. The address, or URL, of the site must be complete. This means including the access-mode identifier (e.g., http, ftp, gopher, telnet, news) as well as the path and file names. The address should also be enclosed in angle brackets . For an entire web site the bibliographic form is : Author or Creator of site. Title of Site. Date of site. . Date you used the site. The entry will look like this: Hsu, David. Chemicol Periodic Table. 2005. . September 6, 2007. For an article within a web site the bibliographic form is : Author of article. Title of Article. Title of Site. Date of site. . Date you used the site. The entry will look like this: U.S. Department of State. Sudan. Background Notes. March, 2007. . September 10, 2007. For online newspaper magazine articles , the bibliographic form is Author of Article. Title of Article. Title of Magazine or Newspaper. Complete date. . Date you used the site. The entry will look like this: Jamieson, Alastair. Chinas Toy Story Turns Nasty After New Recall. The Scotsman. September 6, 2007. . September 12, 2007. 2. â‚ ¬Ã‚  REGULAR BOOKS A regular book usually has just one author, and comes in just one volume. The bibliographic form is Author. Title. Place: Publisher, Date. The entry will look like this: Hammond, Jeff. Real Men Work in the Pits: A Life in NASCAR Racing. PA: Rodale, 2005. When there are two authors, the bibliographic form is First Author (last name first), and Second Author (first name first). Title. Place: Publisher, Date. The entry will look like this: Angeletti, Norberto, and Alberto Oliva. In Vogue: The Illustrated History of the Worlds Most Famous Fashion Magazine. NY: Rizzoli, 2006. When there are three or more authors, the bibliographic form is First Author (last name first), et al. Title. Place: Publisher, Date. The entry will look like this: Bos, Samone, et al. Go!: The Whole World of Transportation. NY: Dorling Kindersley, 2006. Books with an anonymous or unknown author The University Encyclopedia (1985) London: Roydon 3. COLLECTIONSâ‚ ¬Ã‚   EDITED BOOKS A collection is a book (or set of books) that contains works by many different authors-like an edited book or proceeding, an encyclopedia, an Opposing Viewpoints book, or an anthology of short stories or poems. You usually use just one or two parts of it in your paper and the bibliographic form is Author of the Part. Title of the Part. Editor (or Compiler) of the Collection. Title of the Collection. Vol. # (if present). Place: Publisher, Date. The entry will look like this: Cohen, Steve. Snowboarding. World Book Encyclopedia. Vol. 17. IL: World Book, Inc., 2003. Tatum, Becky L. Studies Have Not Established a Link Between Rap Music and Youth Violence. Gerdes, Louise I., ed. Media Violence, Opposing Viewpoints. CA: Greenhaven Press, 2004. If you use several different works from the same anthology, you neednt cite each separately. The bibliographic form for citing an entire collection or anthology is: Editor (or Compiler) of the Anthology. Title of the Anthology. Vol. # (if present). Place: Publisher, Date. The entry will look like this: Nelson, Marilyn. A Wreath for Emmett Till. MA: Houghton Mifflin, 2005. 4. â‚ ¬Ã‚  NEWSPAPERSâ‚ ¬Ã‚   MAGAZINES When citing an article from a print copy of a newspaper or magazine, the most important thing to put down is the complete date. The bibliographic form is Author of Article. Title of Article.Title of Magazine or Newspaper. Complete date, Edition (if present): page number(s). The entry will look like this: Randall, Lisa. An American Physicist in Italy. Discover. July, 2007: 56. LeBlanc, Emma. Refugees Tell NH Woman Their Stories. New Hampshire Union Leader. September 10, 2007, State Edition: A1. 5. JOURNALS The conventions for listing journal articles are similar to books, but note the extra information required in the example below and apply this to all journal article listings. Muller, V. (1994) Trapped in the body: Transsexualism, the law, sexual identity, The Australian Feminist Law Journal, vol. 3, August, pp. 103-107. Journal article with both volume and issue number Muller, V. (1994) Trapped in the body: Transsexualism, the law, sexual identity, The Australian Feminist Law Journal, vol. 3, no. 2, August, pp. 103-107. 5. NON-PRINTMEDIA If the item is not print-based (like a film on DVD or VHS, an MP3 file or audio CD, or a set of slides), the bibliographic form is Producer or Director. Title. [Format] Place: Distributor, Date. The entry will look like this: Hampton, Henry. Eyes on the Prize II. [VHS] VA: PBS Video, 1993. Lansing, Alfred. Endurance: Shackletons Incredible Voyage. [MP3] OR: Blackstone Audio Books, 1991. May, Robert, and Steve James. The War Tapes. [DVD] NY: Docurama, 2007. Paschen, Elise, and Rebekah Presson Mosby. Poetry Speaks: Hear Great Poets Read Their Work from Tennyson to Plath. [CD] IL: Sourcebooks MediaFusion, 2001. 3. How to avoid plagiarism Scientific Misconduct and Plagiarism: Many people say that it is the intellect which makes a great scientist. They are wrong: it is character Albert Einstein In centuries of reading, writing, experimenting and hypothesizing, a persons work will inevitably incorporate and overlap with that of others. However, occasional overlap is one thing; systematic, unacknowledged use of the techniques, data, words or ideas of others is another. Your work has to be carried out honestly and objectively without bias and the results should be reported truthfully. Deviations may occur from the ideal due to ignorance or, at times, they may be willful deceptions. These deviations from the ideal, willful or otherwise, constitute what is known as scientific misconduct. While various types of scientific misconduct have been identified, those that comes to notice usually include fabrication, falsification, plagiarism, cyber-plagiarism, self-plagiarism, and duplicate publication. It is desired that all students should be made aware of these. This note defines plagiarism and sets guidelines. What is Plagiarism? Failure to acknowledge other colleagues scientific work-their ideas, language, or data. Verbatim copying of passages without citing the original contributor, rewording of ideas, paraphrasing, and even total reproduction by simply changing the authors names and trying to pass the material as ones own. Unauthorized use of ideas or unique methods obtained by a privileged communication, such as a grant or manuscript review. Passing off retrospective studies as prospective ones or deliberately omit references to earlier works. How Plagiarism can be detected? One of the important responsibilities of a reviewer is detection of plagiarized text due to his/her familiarity with published material in his/her area of interest. Technology has made it possible to carry out checks for sentences that are copied from previously published articles. There are dedicated web sites available that provide information on plagiarism ( www.plagiarism.org ) and software to detect plagiarism has made it easier for reviewers and editorial staff of journals to detect copying (www.ithenticate.com, www.writecheck.com and www.turnitin.com ). We have recommended to you the VIPER software. Dos and Donts of Plagiarism Some simple tips to be followed to avoid plagiarism are: Take short notes from the source and then write back in your own words without looking back at the original source. Attribute references to any information or idea you are using from other sources, even if you are not directly using it. describe all sources of information Give acknowledgments to the original source by quoting author details at the end of the statement. Give details of the original source by providing footnotes . Use quotation marks wherever required If you are paraphrasing, credit the original source For extensive quotations, obtain permission from the publisher of the original work Obtain permission for use of published drawings or other illustrations Dos and Donts of Research: DO: Make sure you know what question youre trying to answer. Look at all kinds of sources before you narrow in on the ones that will be most useful. Read and digest. Give yourself time to do this. Think critically about what youve just read and how it directly relates to the question. Evaluate what youve got, the holes in your research, and where you need to go from here. Keep a running annotated bibliography going, sorting facts by source or marking your notes with a coding system so as to remember where individual facts came from. Divide your thesis into sections before you begin researching. Make sure you devote energy and time to finding information about all the topics you want to tackle. Remember that the beginning of a thesis presents existing knowledge on a topic, whereas towards the end of a paper, you present your own thoughts. Use a variety of sources. Journals, books, e-books, newspaper and magazine articles, legitimate web sites, and course books can all be good sources, but which ones you use will depend on your topic. Talk to your professor about his or her expectations and ideas for sources. Talk to other students about their strategies for mapping out the research ahead. DONTS: Stuff so much information into your head at once that you cant remember what you learned and where you learned it from. You will lose sight of the point of the research project. Cite Wikipedia. Wikipedia is good for getting general information, but find an absolutely reliable source for your citations. Plagiarize. Learn what constitutes plagiarism and how to use sources responsibly. Dos and Donts of Internet Research The internet provides a rich resource of information and data however; there is great risk in using this all-too accessible resource. Self-regulating resources like Wikipedia and Google- or yahoo-search readily provide us with answers to just about any question we may pose. But which is it the right answer? And, is it the right answer? The very accessibility of online information makes it risky and often questionable. You need to be more vigilant of the veracity and reliability of your sources when acquiring information from the internet. To ensure that your information you have got is sound, one can do several things: Use more than one source, particularly for important things; this will give you a wider range of material from which to discern accuracy and reliability. Verify your sources and preferably cross-reference to measure out objective truth vs. bias. Try to use primary sources (original) vs. secondary or tertiary sources (original cited and open to interpretation); the closer you are to the original source, the closer you are to getting the original study.

Importance of Control in Staffords Traveling Through the Dark Essay

Importance of Control in Stafford's Traveling Through the Dark In William Stafford's "Traveling Through the Dark," the narrator encounters a dead deer on the edge of the road. He knows that the safe and proper course of action is to push the deer into the canyon, but when he finds that the doe was near giving birth before she died, he hesitates to kill the unborn fawn. Stafford's central idea in the poem revolves around the decision the narrator makes to sacrifice the deer in order to clear the road of obstacles, so that others who drive on the dark, narrow road won't have to swerve. The image of the deer evokes sympathy and compassion from the reader because the image isn't merely that of a dead animal. The second stanza describes the dead deer as the reader would expect. The narrator "stood by the heap, a doe, a recent killing; / she had stiffened already, almost cold." The lifeless deer, merely a heap of animal recently killed on the road, seems ready to be pushed into the canyon, but the next stanza reverses the image of the deer. The narrator approaches ...

A Case of Ipt

A Case of IPT 1. How and where are platelets produced in the body? Platelets are produced in the bone marrow from very large bone marrow cells called megakaryocytes. As megakaryocytes develop into giant cells, they undergo a process of fragmentation that results in the release of over 1,000 platelets per megakaryocyte. 2. Describe the role played by platelets in hemostasis. Platelets maintain the endothelial surface. Loss of circulating platelets quickly results in changes in the endothelial cells of the capillaries.These changes cause intravascular material to leak into the capillary bed. Platelets initially arrest bleeding in severed blood vessels. Platelets provide phospholipids, which acts as the catalytic surface for initiation of the coagulation process that played by platelets in hemostasis. 3. Define thrombocytopenia and list the more common causes of this condition. Thrombocytopenia is a blood disease characterized by an abnormally low number of platelets in the bloodstream. Abnormal reductions in the number of platelets are caused when abnormalities occur in any of the following three processes: decreased platelet production by the bone marrow; increased trapping of platelets by the spleen; or a more rapid than normal destruction of platelets. People with this condition easily bruise and can have episodes of excess bleeding. 4. What are the potential consequences of a low platelet count? Your blood would not clot as well in the event of an injury, and you could bleed to death without medical intervention. . What drugs have been associated with the development of thrombocytopenia? Some of the drugs associated with the development of Thrombocytopenia are Sulfonylurea drugs, Benzodiazepines like Diazepam and Anti-epileptic drugs like Carbamazepine. 6. How is thrombocytopenia treated in individuals diagnosed with the condition? The type of treatment you get would depend on the severity of the case, but some of the possible treatments are blood or platelet transfusions, steroids, immunoglobulin, and a splenectomy. . How might removal of the spleen (splenectomy) result in an increase in the number of circulating platelets? The spleen is supposed to remove antibodies from RBCs, so without the production of antibodies, the number of platelets should increase. 8. What is Idiopathic Thrombocytopenic Purpura (ITP)? ITP is a bleeding disorder where blood doesn’t clot as well as it should due to a low number of platelets. Source: National Center for Case Study Teaching in Science

An Overview of Security Essay Example

An Overview of Security Essay Example An Overview of Security Essay An Overview of Security Essay Security Introduction Security is the degree of impenetrability to, or insurance from, harm. It applies to any powerless and profitable resource, for illustration, an person, remaining, group, state, or association. As noted by the Institute for Security and Open Methodologies ( ISECOM ) in the OSSTMM 3, security gives a type of insurance where a division is made between the benefits and the danger. These dividers are nonexclusively called controls, and often integrated alterations to the advantage or the menace ( Herzoq, 2014 ) . Computer security is considered to be a security that is applied to calculating devices such as smartphones, computing machines every bit good as computing machine webs such as private and public webs, including the whole Internet. The calculating security covers all the processs and mechanisms by which information, digital equipment and services are protected from unauthorised entree, alteration or devastation, and are of turning importance in line with the lifting trust on computing machine systems of most societies worldwide ( Musa, 2014 ) . Interview An interview was conducted in order to broaden the positions: What is the difference between hypertext transfer protocol and hypertext transfer protocol? Hypertext Transfer Protocol ( HTTP ) is a convention utilized as a portion of systems disposal. When you write any web reference in your web plan, your plan goes approximately as a client, and the computing machine holding the asked for information goes approximately as a waiter. At the point when client demands for any informations from the waiter, it utilizes HTTP convention to make so. The waiter reacts once more to the client after the solicitation coatings. The reaction comes as site page which you see merely in the aftermath of composing the web reference and imperativeness Enter . Hypertext Transfer Protocol Secure ( HTTPS ) is a mix of two separate conventions. It is more unafraid attack to acquire to the web. It is blend of Hypertext Transfer Protocol ( HTTPS ) and SSL/TLS convention. It is more unafraid attack to directing entreaty to server from a client, to boot the correspondence is perfectly scrambled which implies cipher can acknowledge what you are seeking for. This kind of correspondence is utilized for acquiring to those sites where security is needed. What is the difference encryption, encoding and hashing? The intent behind encoding is to alter information with the end that it can be lawfully ( and firmly ) devoured by an alternate kind of model, e.g. dual information being sent over electronic mail, or reexamine alone characters on a site page. The aim is non to maintain informations enigma, but alternatively to vouch that it’s ready to be lawfully devoured. Encoding alterations information into an alternate organisation using a program that is openly accessible so it can without much of a stretch is turned about. It does nt compel a key as the chief thing needed to interpret it is the computation that was utilized to encode it. The motive behind encoding is to alter information to maintain it mystery from others, e.g. directing person a enigma missive that merely they ought to hold the capacity to peruse, or safely directing a war cry over the Internet. Alternatively of concentrating on easiness of usage, the aim is to vouch the information ca nt be devoured by anybody other than the planned receiver ( s ) . Encoding alterations information into an alternate agreement in such a way, to the point that merely peculiar person ( s ) can invert the alteration. It utilizes a key, which is unbroken enigma, in concurrence with the plaintext and the computation, maintaining in head the terminal end to execute the encoding operation. All things considered, the cypher text, computation, and key are all needed to come back to the plaintext. Hashing fills the demand of vouching trustiness, i.e. doing it so if something is transformed you can recognize that its changed. Actually, hashing takes subjective include and bring forth an altered length twine that has the attach toing qualities: The same information will faithfully make the same output. Different dissimilar inputs ought non present the same output. It ought non to be imaginable to travel from the output to the info. Any accommodation of a given informations ought to convey about utmost alteration to the hash. Hashing is utilized as a portion of concurrence with verification to make solid cogent evidence that a given message has non been adjusted. This is adept by taking given information, encoding it with a given key, hashing it, and after that scrambling the key with the donee s unfastened key and taging the hash with the transmitter s private key. At the point when the donee opens the message, they can so unscramble the key with their private key, which permits them to decrypt the message. They so hash the message themselves and contrast it with the hash that was marked by the transmitter. In the event that they match it is an unmodified message, sent by the right person. Why hackers are a measure in front from security? Moderate size organisations are in a tight topographic point. As their capacity to garner client information expands, so overly does the problem of guaranting that information. Besides during a period when computerized informations systematically ventures by agencies of cell phones and in the cloud, a coder s right to derive entryway to that information multiplies. Normally the concern runs speedier than attempts to set up safety. Income originates from the concern, so there is usually a race [ for security ] to remain cognizant of the concern. On the off opportunity that there is another ability to do rapid income by using a cell phone or another portable computing machine or even another type of intent of offer in the field, by and large attempts to set up safety are non quickly contemplated. How make you cover after being attacked by a hacker? Hackers are winning the conflict against today s endeavor security squads. In the twelvemonth since Target suffered a record-breaking information breach, it has become clear that the lessons learned from that onslaught have non been widely applied. At the clip of composition, 636 affirmed information ruptures have happened in 2014, a 27 % enlargement over the same period a twelvemonth ago, with outstanding exploited people, for illustration, Home Depot, ebay, Jpmorgan Chase, Dairy Queen, Goodwill and legion others. The assault surface as it exists today is non at the boundary line, yet inside the IT environment. Programmers utilised O.K. enfranchisements to works charge card taking malware on a figure of Target s purpose of-offer ( POS ) frameworks. Truth be told, as indicated by the 2014 Verizon Data Breach Investigations Report, approved makings were utilized by coders as a portion of 76 % of all system breaks. When a client s enfranchisements have been traded off, coders can trave l along the side through a system wholly undetected without triping border based find scheduling. Why the security maintain the backup outside the metropolis? A study from Pandalabs found that 30 million new malware dangers were made in 2013 – a normal of 82,000 systematically. There is no existent manner to remain cognizant of this speedy rate of malware creative activity, which is continually developing. Firewalls and against infection Markss are sufficient to halt normal dangers, nevertheless do nil to halt an attacker with legitimate enfranchisements copying a client. Rather, IT groups need to remain one phase in forepart of coders by look intoing the making usage for leery client action as a effect of stolen enfranchisements or noxious insider ( Staying one measure in front of hackers, 2014 ) . Which is the best op.system for security utilizing? There is a list of runing systems that are being widely used ; nevertheless the best operating system which is being used is one which has security focused. The one of runing systems is OpenBSD which is an unfastened beginning BSD operating system and is one which is to a great extent concerned with security. On the other manus, another operating system is EnGarde Secure Linux which is besides considered to be a unafraid platform designed for waiters. Mentions Staying one measure in front of hackers. ( 2014 ) . Retrieved 12 16, 2014, from IBM: hypertext transfer protocol: //www.ibm.com/midmarket/us/en/article_security_1402.html Herzoq, P. ( 2014 ) .Open Source Security Testing Methodology Manual. Retrieved 12 16, 2014, from isecom: hypertext transfer protocol: //www.isecom.org/research/osstmm.html Musa, S. ( 2014 ) .Cybersecurity: Understanding the Online Menace. Retrieved 12 16, 2014, from evollution: hypertext transfer protocol: //www.evolllution.com/opinions/cybersecurity-understanding-online-threat/

Olivers ignorance Essay Example

Olivers ignorance Essay Example Olivers ignorance Essay Olivers ignorance Essay Essay Topic: Oliver Twist In both novels the sufferings by the main female and male characters are very similar. The main female character in Oliver Twist is Olivers mother. There is little told about her except the fact that she is dying from exhaustion from the journey to the workhouse and from giving birth to Oliver. The surgeon also discovers that she is not married, the old storyno wedding ring. I see Olivers father is unknown leaving the baby to be an orphan and the absence of wedding ring may suggest a poor relationship experienced. However, in Therese Raquin, Camilles mother, Mme Raquin does not experience death but his father is of absence as well. In this case, the poor relationship experienced is by another main female character, Camilles wife Therese. Zola ends the chapter by Thereses unusual responses, She cast a vague wandering look upon this wall, without a wordwent to bed in disdainful indifference. Therese has many thoughts before going to bed with her husband, Camille. The indifference of going to bed without joy every night resembles them experiencing a poor relationship. Thereses misery is caused by lack of love which may be due to Camilles sickness. Zola describes in the last paragraph, The husband who was always trembling with fever went to bed. By constantly dealing with fever, Camille is unable to take care of his wife or to show any love to her, this may be the reason why a poor relationship exists. Compared to Oliver Twist, there are no signs of concern shown by Olivers father as well. Both males are the cause of suffering to the females in the two novels. In earlier paragraphs an image of Camille is given, his face covered with red blotches, he resembled a sickly, spoilt child arrived at man hood. This phrase emphasizes the idea of Camille being physically like a child, however his languid manner showing absence of maturity to marriage also represents his cognitive abilities like a child. In Oliver Twist, the baby is also physically and emotionally like a child, both characters are associated with a sense of ignorance and innocence to the outside world. For example, Camille is unaware of his wifes wants while Oliver is unaware of his mothers death. Both characters are unaware of the consequences that their ignorance may bring. In the endings to both openings, the authors focus on a character to leave the reader with a feeling that something undesirable is going to happen. For example in Therese Raquin, Zola uses Therese, She remained there a few minutes facing the black wall, which ascends and stretched above the arcade. As Therese watches the black wall full of thoughts, by having the wall stretched and ascending, it represents her thoughts growing as well which may lead to consequences. In Oliver Twist, Dickens uses Oliver, If he could have known that he was an orphanperhaps he would have cried the louder. This is an example of Olivers ignorance. He is ignorant to the fact that he is an orphan but automatically, this makes the reader think that he will find out soon, therefore a sense of mystery is imposed on the readers.  The introductory chapters have started to unfold part of the story, hinting what is to come by introducing the main characters unfortunate living standards. This idea is effective because usually readers will associate a more joyous life with better living standards. By constantly emphasizing other elements such as poor living conditions the author succeeds in imposing this perspective.

Comparación entre la visa K-3 y green card

Comparacià ³n entre la visa K-3 y green card Si eres un ciudadano americano y ests casado con un extranjero que se encuentra fuera de EEUU puedes reclamarlo con una K-3 o con una tarjeta de residencia,  ¿quà © es mejor? Si te has casado y no sabes cul es el camino ms rpido y conveniente para que tu esposo/a venga a los Estados Unidos a vivir contigo como residente permanente legal lee esta comparativa antes de decidir quà © hacer. Elementos comunes a la K-3 y a la solicitud de la tarjeta de residencia para un esposo mediante el formulario I-130 En ambos casos tà º, el ciudadano americano, tienes que enviar la solicitud al Servicio de Ciudadanà ­a e Inmigracià ³n (USCIS, por sus siglas en inglà ©s). Si la aprueba, contactar directamente con el consulado correspondiente.El consulado citar a tu esposo/a para una entrevista y ser el oficial consular el que decida si aprueba la solicitud de visa K-3 o de la tarjeta de residencia, segà ºn la peticià ³n que tà º le presentaste al USCIS. Quà © pasa si solicitas una K-3 para tu cà ³nyuge La K-3 una visa que permite al esposo/a de un ciudadano americano entrar en Estados Unidos. Una vez aquà ­ deber realizar un ajuste de estatus para conseguir la greencard.  A consecuencia de ello hay que dedicar unos seis meses a esta tramitacià ³n. Quà © pasa si solicitas una tarjeta de residencia Si en la entrevista el oficial consular aprueba la peticià ³n, entonces tu cà ³nyuge recibir una visa de inmigrante para entrar en Estados Unidos. Cuando llega a la frontera y le sellan el pasaporte se convierte en residente permanente legal. Y en unos meses recibir por correo ordinario la tarjeta de residencia. (pero residente es desde el momento en que entra a Estados Unidos).  ¿Cul es la ventaja y desventaja de la K-3 sobre la peticià ³n del permiso de residencia? Hubo un tiempo en el que las K-3 se tramitaban de una manera ms rpida y por eso habà ­a quien las preferà ­a para acortar el tiempo en el que los esposos permanecà ­an separados. Sin embargo,  hoy en dà ­a esto ya no es asà ­. El tiempo de demora de las tarjetas de residencia para los esposos de los ciudadanos que se encuentran en otro paà ­s varà ­a entre los seis meses y el aà ±o, en la mayorà ­a de los casos. Depende en gran medida de la oficina del USCIS que tramite la peticià ³n y del consulado en el que tiene lugar la entrevista. Otra desventaja de la K-3 que puede afectar a algunas parejas es que la entrevista consular ha de realizarse en el paà ­s en el que se celebrà ³ la boda (excepto si es Estados Unidos, en cuyo caso tendr lugar en el consulado del paà ­s en el que viva el novio extranjero). Por ejemplo, si una pareja donde la novia es de Estados Unidos y el novio de Colombia deciden casarse en Parà ­s durante un viaje romntico, tienen que saber que la entrevista para el visado no va a tener lugar en ningà ºn consulado colombiano, sino en uno francà ©s. Asà ­ que habrà ­a que viajar a otro paà ­s, con el consiguiente gasto.  ¿Cul es la ventaja de pedir directamente la tarjeta de residencia? Que el cà ³nyuge extranjero se convierte en residente nada ms pisar suelo de los Estados Unidos y ser procesado por un oficial de Inmigracià ³n en la aduana. No es necesario realizar un ajuste de estatus. Y como el tiempo de tramitacià ³n se ha reducido y se asemeja al de las visas K-3, realmente la opcià ³n ms ventajosa en la mayorà ­a de los casos es la de reclamar una tarjeta de residencia para el cà ³nyuge extranjero. A tener en cuenta Tanto en los casos de visas K-3 como de peticiones de tarjetas de residencia, la greencard ser condicional por dos aà ±os si los esposos llevan menos de dos aà ±os casados. Toma este test de respuestas mà ºltiples sobre la tarjeta de residencia.  ¡Te ayudar a evitar cometer errores! Documentos para realizar las peticiones En ambos casos necesitas rellenar la planilla (forma) I-130. Una vez que es aprobada por el USCIS (te lo notificar con un documento conocido como I-797), si deseas seguir el camino de la visa K-3 debers rellenar el formulario I-129F, incluir una copia del I-797 y enviarlo a la oficina de Dallas del USCIS.

Tort reform for the health insurance industry Essay

Tort reform for the health insurance industry - Essay Example Thus it is up to the US government to play a very significant role in bringing such costs under their control, so that it becomes easily affordable for all the citizens in the US. (www.aaos.org) The Tort reform is a law that has been created by the US government, which is aimed at reducing the proceedings of the court. Ever since its introduction the Tort reform in the medical insurance field, it has been a matter of debate for most of the people in the US. The Tort reform has been especially introduced into the healthcare sector, with an idea of looking up into the issues relating to the malpractices, that often occur in the medical field and also the lawsuits that are being filed in this sector. This results in an increase in the cost of the insurance providers. (www.aaos.org) As a result of these hidden factors the parties involved in the insurance coverage, which includes the insured as well as the insurance provider often gets exploited by such undue costs. It is with this aim t hat the US government has brought about the Tort reform, so as to ensure that the interests of both the parties are safeguarded and at the same time justice is meted out to them in the medical field. ... (www.allbusiness.com) Hence due to threat of medical liability reform, the doctors across the US have become very much conscious about their liabilities when treating patients. But though the insurance costs are on the increase in the US and individuals are being made to pay more for their healthcare insurance, still the Tort reform has made it possible for safeguarding the US citizens from getting unduly exploited by the medical professionals and get insurance protection. (www.aaos.org) Areas that require Tort Reform The area that requires a major Tort reform is the agricultural sector in which, the farmers and the families who are involved in agricultural activities are totally exposed to high risks. There have been many cases of fatalities and serious injuries which have made the agricultural community to force the US government to go forward with Tort reforms, which will ensure the safety and the financial help through insurance, in case of accidents during the course of farming. Statistics also point to the fact of the urgent need for Tort reforms in this sector, since the number of accidents and fatalities are ever on the increase in this particular field. (www.aaos.org) Tort reforms are also very much required to bring about reforms to the various industries and the business establishments that are spread across the US. This will ensure a sort of liability of all those involved and will also simultaneously safeguard the various industries and business firms. This will give them more power which will help them to increase their business and also give them a feeling of security as well as confidence. This will make them to do business under a free and fair business atmosphere. Thus the Tort reforms are very much needed in these sectors, since it

Airlines Essay Example | Topics and Well Written Essays - 2750 words

Airlines - Essay Example Enron Corp. was the result of merger between Houston Natural Gas and Internorth. There was a shift to unregulated energy trading markets from regulated transportation of natural gas. Enron was a Fortune 500 company and was in #7 in 2001 was deleted from New York Stock Exchange. According to the mangers of Enron who reviewed the accounts of the company, during California energy crisis Enron has kept undisclosed reserves of up to $1.5 billion in trading profits. Enron came under fire from politicians of price gouging. The hidden reserves would have doubled the Enron's reported profits. It is also reported that Enron manipulated reports on reserves to have steady profit growth to Wall Street and credit rating agencies. The executives also claimed that the reserves were held back and used to fulfil the political and financial ends. In 1990 Enron reported its total revenue as $10 billion and in the next subsequent ten years it grew by $101 billion. It emerged as one of the fast growing companies in the United States. The main reasons for its collapse is not due to the core energy operations but the company's new ventures in dot com sector and investments Internet and communication business. According to investigators of the security of exchange commission gone into investigate the case, have interviewed witnesses to come to a conclusion that the methods or practices violated the laws for doctoring quarterly earning refers to start cookie jar reserves. The existence of Enron reserves puts strange twist to it. The executives of Enron inflated profits and concealed losses with official balance sheet. Partnership in this scenario of reports that Enron has shown wrong accounts in December 2000, the company filed for bankruptcy protection but interviews with more than a dozen ex-Managers and Executives revealed that the Enron many a time paid the profits on trading to meet the needs of politicians and financiers. The major portion of the gains were Shown on paper only on long term contracts only had it been the cash that could have put off liquidity crisis that led to its collapse. As per one of the former Executives, before a few months of Enron bankruptcy, the reserves were depleted. It is common to use reserves to manage profits through it is unlawful. The former long time chairman and company's president chief executive were aware of the reserves and felt them proper. Judy Leon, Skilling's spokes woman said that Skilling did have any knowledge of unlawful and illegally activity with the reserve account. Further she said that many kept in credit reserves to save the Enron form the risk as California facilities could be bankrupted by the crisis, which may lead to situations where they cannot pay their debts. Slowly the Enron's activities came into light when the then CEO Jeffrey Skilling resigned in August 2001 from his position without giving any proper reason. This was the starting phase of its collapse. In October Enron incurred first quarterly in four years that was up to $1 billion because of poor business performance. In November 28 2001 Enron's debt was downgraded to below investment grade by the bond rating agencies. The Justice Department was handed over the Enron's case and it conducted a criminal investigation and the case was brought to the Senate and the House, which held

French Revolution Essay Example | Topics and Well Written Essays - 5000 words

French Revolution - Essay Example The new order, or at least the aim of the new order, was the establishment of a peoples' republic where private property is owned by the feudal lord is berated, religion does not play any role in politics or in the lives of the people and a general will is represented by a group of bourgeois leftists. Although when the revolution ended, France was ruled by an emperor, Napoleon Bonaparte. If we look at 1789 France and try to determine the causes of the French Revolution, one fails to identify any decadence of its system. For instance, it was the largest, wealthiest and most powerful state in Western Europe. Its intellectuals led the Renaissance and then the Enlightenment era. French bourgeoisie was prosperous and well-established. Peasants owned and cultivated 40 percent of the land. What reason was there for a revolution Norman Gash (1989) quoting Napoleon's statement argues that the reason for French Revolution was nothing but vanity and that liberty was just a pretext. "One can see the argument. The aristocracy, only 2 per cent of the population, enjoyed a privileged position which their actual services to the state hardly seemed to justify. What the urban and professional middle classes clearly wanted was greater social recognition, easier access to rank and power and wider careers for their talents. Ambition and envy are impelling motives. (Gash, 1989) Lefebvre (1939) on the other hand asserts that the reason why French Revolution took place was the rise of the bourgeoisie presented by the Enlightenment philosophes as a better alternative to absolute monarchy. The philosophes of Europe appeared to have turned against the age of empires and monarchical rules supported largely by the clergy and the aristocracy. In bourgeoisie, the intellectual community invested lot of hopes perhaps for the reason that they opposed the aristocracy and offered an economy that was more egalitarian and involved for the first time in Europe's history the people. This paper will make an attempt to examine the question whether Rousseau's Concept of the "Social Contract" had a foremost influence on the intellectual development of the French Revolution and inspired its leaders. The paper will describe the salient concepts of Rousseau's Social Contract theory and enlist the events that took place during the ten years of the French Revolution (1789-1799). An attempt will be made to answer the question by studying the development of the Revolution and comparing that with Rousseau's social contract theory. It is important to note that the French Revolution was not influenced by Rousseau alone but it would not as well be completely out of place to assert that he wrote down the manual and the revolutionaries built the revolution by following his step-by-step instructions. In fact, Rousseau was one of the philosophes of Enlightenment which basically pushed the idea of liberalism based on virtue, reason, toleration and so on. Other philosophes

Theoretical Foundation in instructional technology Research Paper

Theoretical Foundation in instructional technology - Research Paper Example This suggests technology materials are of the essence in order to instructional technology method a feasible project. Alternatively, the design and processes should not make it hard for facilitators to dispense knowledge to their students because it leads to wastage of both time and resources. In other words, the technology should have efficiency during use without incurring extra costs during learning. There are different ways in which the quote by James Gee & Elizabeth Hayes applies to the context constructivism learning theory, behaviorism learning theory and inquiry learning theory. Therefore, in constructivism learning theory in adult online learners, they use different methodologies to meet its goals. For example, adult learners are expected to interact more with their environment in order to acquire knowledge on different aspects of online learning. This is because the methodology improves on both critical and analytical skills of the student. In the same aspect, in the constr uctivism learning theory, there is an application of computer games instead of the conventional materials in traditional education (Wagner & Ip, 2008). However, the utilization of such technology requires competent teachers who are can impart knowledge to both adult and young learners. Another fundamental prospect of integrating the theory into online learning is the ability to attain, high realistic enactment, which is made live by computers. On the other hand, there is the John B Watson/ Behaviorism learning theory whereby behavior has an attachment to an external influence such as an environment. This may be through association or some of form of reinforcement. Therefore, in terms of online learning, adult learners may not adjust effectively to computer based education. There are several reasons to explain the scenario in the context of both comprehension and retention. For instance, adult learners were formally used to the traditional mode of education hence the transition to on line learning may prove hard (Chow, et al 2010). They also lack a consistent will to adapt to a new environment that has its influence from an association from other students. This suggests that while adults may have the inner desire to use the online platforms, the conventional background prevents them from faster adaptation. Additionally, adult learners also have special needs and requirements that may prove hard for most incompetent teachers without proper training. It is noteworthy, therefore, to introduce other learning methods in the form of stimulating activities and environments to spur the learners to critical and analytical thinking. These also entail exercises, computer games and simulations in order to trigger the interest of the student in educational matters. Furthermore, through the behaviorism learning theory, teachers will help students in the transfer of knowledge in order to boost retention. Apart from the above theories, there is also the inquiry learning theory founded by Jerome Bruner in 1961. Therefore, here the student uses the available materials to develop analytical and experimental skills instead of the knowledge possessed from school. On that perspective, when learners use online methods they are expected to use their external and internal environments to integrate knowledge. Alternatively, to make such form of knowledge acquisition applicable for students, it is

Response Movie Review Example | Topics and Well Written Essays - 250 words

Response - Movie Review Example Such books are preserved in the forbidden library, as they would question the authority of the church. One of the key ways through which Umberto Eco compares Brother Williams to Sherlock Holmes is through the assessment of the murders of the monks. In the contemporary setting, Sherlock Holmes was a brilliant detective who understood the inner workings of various aspects about the killers. Williams was able to think outside the box and as well, solve mysterious deaths that no one else would have solved.1 Using such an approach, although Brother William was not a detective by nature, his ability to see through crime in a way that most people would not makes him more like Sherlock Holmes. Bringing in the concept of the supernatural, such as demons, also makes this film more like Sherlock Holmes, as the detective was in a mysterious island, whose inner workings were unclear to humans, but were more of a supernatural nature. Reason is the key strategy of any investigation. Bearing in mind that most people do not have a clue on the inner workings of a murder case, because they have little, if any connection with the murderer, using reason is one of the ways through which such mysteries can be solved. Brother Williams was willing to reason and see beyond the trees, to view the forest. In short, he used the various simple details of a case to create a hypothetical bigger picture, which was much closer to the actual truth. The book is very educational, highly intuitive and a suspense filled packet of

Leadership Coursework Example | Topics and Well Written Essays - 2250 words

Leadership - Coursework Example The key techniques used for developing / improving leadership using theatre and improvisational exercises (for improving and enhancing communication styles); improving and ensuring greater presence (such as increased focus during business presentations, meetings with clients and /or colleagues etc.); using expressive capabilities; and developing and enhancing the art of communicating with the audience (both individuals as well as groups). The article "Choosing strategies for change" presented by Sharon Hill, on the other hand stresses on the significance of managing change within organizations and the various issues faced while initiating new order of things. The article suggests that in order to ensure successful change management within organizations it is imperative to ensure involvement of all employees in the key activities or planning process, since they are the most likely to resist change. Secondly, the article emphasizes on developing strategies specially centered on the type of challenges / resistance likely to be encountered while initiating the change, such as offer training workshops for skill development to the employees. Lastly, one of the most effective ways of initiating the process of change within organizations is taking into consideration the situational factors. This can be achieved by responding to imminent crises situations quickly (Kotter & Schlesinger, 2008). Key techniques used for successful change management include: education (educating the employees), participation (ensuring greater participation of those most likely to resist change), facilitation (offer skills training and workshop), negotiation (offer incentives to influence them to change), and coercion (use threats such as loss of job, promotion or transfer to those resisting the change). 2. Managing change is one of the most difficult and

Theoretical Foundation in instructional technology Research Paper

Theoretical Foundation in instructional technology - Research Paper Example This suggests technology materials are of the essence in order to instructional technology method a feasible project. Alternatively, the design and processes should not make it hard for facilitators to dispense knowledge to their students because it leads to wastage of both time and resources. In other words, the technology should have efficiency during use without incurring extra costs during learning. There are different ways in which the quote by James Gee & Elizabeth Hayes applies to the context constructivism learning theory, behaviorism learning theory and inquiry learning theory. Therefore, in constructivism learning theory in adult online learners, they use different methodologies to meet its goals. For example, adult learners are expected to interact more with their environment in order to acquire knowledge on different aspects of online learning. This is because the methodology improves on both critical and analytical skills of the student. In the same aspect, in the constr uctivism learning theory, there is an application of computer games instead of the conventional materials in traditional education (Wagner & Ip, 2008). However, the utilization of such technology requires competent teachers who are can impart knowledge to both adult and young learners. Another fundamental prospect of integrating the theory into online learning is the ability to attain, high realistic enactment, which is made live by computers. On the other hand, there is the John B Watson/ Behaviorism learning theory whereby behavior has an attachment to an external influence such as an environment. This may be through association or some of form of reinforcement. Therefore, in terms of online learning, adult learners may not adjust effectively to computer based education. There are several reasons to explain the scenario in the context of both comprehension and retention. For instance, adult learners were formally used to the traditional mode of education hence the transition to on line learning may prove hard (Chow, et al 2010). They also lack a consistent will to adapt to a new environment that has its influence from an association from other students. This suggests that while adults may have the inner desire to use the online platforms, the conventional background prevents them from faster adaptation. Additionally, adult learners also have special needs and requirements that may prove hard for most incompetent teachers without proper training. It is noteworthy, therefore, to introduce other learning methods in the form of stimulating activities and environments to spur the learners to critical and analytical thinking. These also entail exercises, computer games and simulations in order to trigger the interest of the student in educational matters. Furthermore, through the behaviorism learning theory, teachers will help students in the transfer of knowledge in order to boost retention. Apart from the above theories, there is also the inquiry learning theory founded by Jerome Bruner in 1961. Therefore, here the student uses the available materials to develop analytical and experimental skills instead of the knowledge possessed from school. On that perspective, when learners use online methods they are expected to use their external and internal environments to integrate knowledge. Alternatively, to make such form of knowledge acquisition applicable for students, it is

Leadership Coursework Example | Topics and Well Written Essays - 2250 words

Leadership - Coursework Example The key techniques used for developing / improving leadership using theatre and improvisational exercises (for improving and enhancing communication styles); improving and ensuring greater presence (such as increased focus during business presentations, meetings with clients and /or colleagues etc.); using expressive capabilities; and developing and enhancing the art of communicating with the audience (both individuals as well as groups). The article "Choosing strategies for change" presented by Sharon Hill, on the other hand stresses on the significance of managing change within organizations and the various issues faced while initiating new order of things. The article suggests that in order to ensure successful change management within organizations it is imperative to ensure involvement of all employees in the key activities or planning process, since they are the most likely to resist change. Secondly, the article emphasizes on developing strategies specially centered on the type of challenges / resistance likely to be encountered while initiating the change, such as offer training workshops for skill development to the employees. Lastly, one of the most effective ways of initiating the process of change within organizations is taking into consideration the situational factors. This can be achieved by responding to imminent crises situations quickly (Kotter & Schlesinger, 2008). Key techniques used for successful change management include: education (educating the employees), participation (ensuring greater participation of those most likely to resist change), facilitation (offer skills training and workshop), negotiation (offer incentives to influence them to change), and coercion (use threats such as loss of job, promotion or transfer to those resisting the change). 2. Managing change is one of the most difficult and

Problems of working womens Essay Example for Free

Problems of working womens Essay In his book on superstition, Vyse (1997) observed that it is difficult to define superstition and its dictionary definition is not sufficient. He also noticed that in defining superstition the critical problem is the avoidance of value judgments. Unfortunately, he did not provide a comprehensive definition of his own. The following definition of superstition which is based upon the work of Vyse (1997) and Marmor (1956) is proposed: superstition is a belief, or a set of beliefs, that specific actions can directly influence the occurrence of desirable outcomes or the avoidance of undesirable outcomes when, in fact, the action are not causally related to the outcomes. More than it, a superstition is a practice or a belief that is made to influence an outcome, is based upon a mysterious or an unknown force and is contradictory to scientific knowledge available within a culture. Thus, in ancient Egypt the work was based upon the â€Å"science† of the time because studying astrological signs made sense. However, American’s decision to make a purchase in a twenty first century after reading her or his horoscope is a superstitious behavior. The question arise that why superstitious behavior still exhibit in people? The literature actually provides three alternative definitions. First, from operant conditioning perspective, superstitious behaviors and beliefs can result from chance associations of behaviors with punishers and reinforcers. (Skinner, 1948; Wagner and Morris, 1987). According to cognitive learning perspective, by adopting superstitious behaviors and beliefs it can help an individual to understand his environment by providing an explanation and reasoning for inexplicable and unfamiliar phenomena (Keinan,2002). Finally, superstitious beliefs provide illusion of control to individual that helps them to reduce anxiety. Consistent with these themes, Jahoda (1969) proposed that superstitious functions accompany uncertainty as a mean by which people reduce the anxiety and stress. Similarly, Vyse (1997) proposed that when risk and uncertainty are high or in instances in which circumstances cannot be controlled, people may employ superstitious actions as a mean of attempting to control and influence these outcomes. In American, culture has been a frequent assumption that superstitious thought and behavior characterize those who are uneducated, primitive (Frazer,1941 ; Jueneman,2001; Vyse, 1997), or suffering from a mental disorder (Fishbein, 1930). These types of superstitious beliefs has been investigated in the psychological literature, the focus has tended to be on examing its relationship with mental disorders (Eckblad and Chapman,1983;Epestein, 1991; Epstein and Meier, 1989). A 2003 Harris Poll revealed that 31% of those believed in astrology (Taylor,2003). Similarly, in the 2004 Science and Engineering Indicators report, the National Science Institute Foundation reported that 30% of Americans read their horoscope occasionally and 15% read their horoscope very often (National Science Foundation, 2004). High involvement decisions are also influenced by these superstitions beliefs. For example, the number of weddings scheduled on 7\7\07 , in order to capitalize on lucky number 7 increased dramatically in United States (Moran,2007). Including Europe and Asia belief in astrology is also prevalent in other areas of the world. For example, Kramer and Block (2007) reported that Taiwanese consumers were willing to spend nearly 15% more money for their product when the price point met to the lucky number 8. The author suggest that when people look for signs of bad or good luck or take action to influence chance outcomes, they are using superstition as a heuristic device that acts as a short cut in the decision making process. SUPERSTITIOUS BELIEFS. Superstitions are those irrational belief or supernatural causality: that one event link to another event without any physical process. So, superstitious belief refers to an activity or ritual which can have a negative or positive impact on the events in person’s life. There is no evidence which support a superstitious belief. Attempts to define and explain superstitious beliefs have appeared throughout Western history, especially in the areas of religion, psychology and anthropology. Ancient Greeks and Romans give it a Latin word â€Å"SUPERSTITIO† to give an account of activities they felt to be meaningless. HELEN L. PARISH and WILLIAM G. NAPHY, protestant accused Catholics in the era of Reformation because of superstitious belief. For example, Protestant accused publicly as superstition the respect of saints, lighting candles to find favor with God and saying a set number of prayers for penance. During the 18th century at the Age of Enlightenment opposition to superstition was the intellectual central corner. At that time philosophies included much of Christian Doctrine considered these beliefs like miracles, magic, revelation, supernatural as â€Å"superstition† as a ridiculed belief. In 15th century the word superstition used in English, modeled after an earlier French superstition. Actually French word, together with its Roman cognates continues Latin superstitio. The formation of the Latin word is clear, as it is derived from the verb super-state, â€Å"stand upon; survive, to stand over†, here its actual sense is less than clear. It can be interpreted as â€Å"standing over a thing in awe†, but other possibilities would be, for example, irrational religious habits, over-ceremoniousness in the performing of religious rites, over-scrupulousness, or else the survival of old. The term supertitio, was applied to those religious cults which were officially outlawed in the Roman Empire in the 1st century. A carpenter happened another deal to land while carrying a nail in the pocket which he had forgotten there. He notices that nail. After that he came back to home, watched his wife happy about something, took off the jacket, and noticed the nail again. He associated his lucky day with this item. Next day he kept that nail with him in every important event. Religion also plays a significance role in some kind of superstition belief. Before Christianity popular people believed in multiple gods, and one of the powerful of them was representing the sun as a source of light, and, thus, is also seen as a source of life. So due to this people light all the corners of their house with an Easter candle the whole year will be considered as the lucky one. So some superstition rituals as such came from the old religious activities. Due to emergence of new religion most of such beliefs had forgotten, some of them had found their place in the new world view. For example, in the times when the first mirror became available to the people breaking a mirror was considered a very disappointing thing because mirrors were so expensive that time. Naturally, people saw nothing good in breaking one. Same situation related to spilling salt. In old era salt was considered as one of the most expensive and precious thing in the household. So, such superstitions were just a way for people to teach their children to admire what they have. Generally superstitions have personal, religious, or cultural background. They do have a logical explanations is the common feature of all. When the superstition originated there key to explanation is always in world-view of the times and in beliefs. Simply; superstitions resulting from ignorance or fear of unknown and it is an irrational belief or practices. Belief in the power of magic and witchcraft are the validity of superstitions such as spirit and demons. Superstition is the notion, ritual or act that derived from such belief. Like in the Middle Age, a common superstition was that when the person was sneezing during the unguarded moment a devil could enter in a person; if immediately any one present appeared to the name of God. This tradition still remains today of saying when someone sneezes â€Å"God bless you†. Superstitions can be cultured that came from people and pass to one another. Great source of superstitions are the myths, scholars, cultures, elders, imaginative stories, leaders and governments. There are some common superstitions which have a negative impact on people are as below. Types of superstition belief. Spilling salt over your shoulder. [Is supposed to damage the evil]. If a cat heard crying, it’s a bad omen. The opening the scissors and closing it without a reason causes family problems at home. Don’t drink milk after eating fish, said to cause severe skin problem. You can’t cut nails at night. Kids shouldn’t let any one walk over them otherwise they will stop growing. Never call one back when the person is leaving the house. If you dream about buffaloes and horses its bad luck. Fluttering of eyes. Even that indicates the happening of good and bad in their lives. If you broke the glass it’s a sign of happiness. If there is itching on the right palm you can get some money or favors. When the owl sings it’s a sign of bad luck. When a dog howls, someone is going to die in the neighborhood. If we are walking and see a black cat cross in front of you, it’s bad luck Knocking on wood. Walking under a ladder. Wearing different kind of stones in specific fingers. A four leaf cloves and so on†¦. People had a lot of beliefs that directly contradict to the philosophy of their own religion. Some people claims that they have no superstitions but they likely to do something which they cannot explain. Feeling of lack of control in people upon their life, many people tried to impose structure and order on the world, to hide their mistakes by blaming luck. Passing down through generation to generation of these superstitions it can change their validity regarding evolutionary process. Some of the older form of superstitions have long been a part of lore and are now the examples of misguided beliefs. These superstitious beliefs are not valid but people still believe in it. Part of the reason seems to be just because other people tell them these things are true. Some these kinds of irrational beliefs have been around for many generations. Sometimes everybody with the same cultural background practically believes them. If the claims are not true and people recognize that these superstitions are false but they can’t stop passing them on. In spite of difficulties, many people still believe in superstitions. Culture of some country such as culture of Western country also believes in superstition that deemed irrational. GLOBALLY. When our ideas or faiths are not based upon scientific explanations, we call them superstitions. In past, when people saw the red horizon of the west during the sun-set, they called it an indication of anger of Gods and Goddesses. They expected high flood or cyclone or any epidemic to occur. It was nothing but a superstition. People are afraid of the number 13. They think that it is an inauspicious number so they do not begin any good work on this date. Some people do not like to stay in the room which bears the number thirteen, hi past, Malaria and cholera -were believed to be the results of Gods displeasure and curse. There-were many superstitions in past. They were all born ignorance. The causes of some events were unknown due to ignorance. So, people believed that those events were caused by invisible being. People worshiped stones and trees in order to be cured of diseases. They thought that some evil spirits were responsible for all kinds of troubles in the world. They worshipped Gods and Goddesses to be free from earth quake,-cyclone and flood. Sometimes they killed human beings and other animals and satisfied Gods. In India, cat is an ominous animal. If a cyclist or motorist notices a cat on the way, he stops and retreats a little. There is no reason why only a cat is feared on the way. In Europe they had many superstitions. People did not walk under a ladder which was kept against a wall. They did not start any important work if they heard the sound of thunder. A crow or vulture flying over head was considered very dangerous. It indicated death. In past, -Kings and emperors consulted the soothsayers, in their court before doing any Work. If the soothsayers gave negative signal no work was done. Julius Ceasar of Rome was a superstitious emperor. Cicero, the greatest Roman orator, lost his life by trusting the superstition regarding crows. Nature was a mystery for man in past. The functions of nature, laws of the universe etc. were not discovered in those days. So man thought himself as a plaything of an uncontrollable force. If that force is beneficent, man gets peace and lives happily. That force is sinister then his life becomes miserable. Man believed in fate. Very often superstitions are connected with religion. Indians are very God fearing. In this country, many superstitions ail linked with religion. People observe Thursday and do not take non-vegetarian food on this dry. The Hindus believe that they can be rich by observing Thursday which is specific day of Goddess Lakshmi, the Goddess of wealth. Pigs are hated in certain religion. The moon was considered a Goddess. Lunar eclipse was believed a § a curse of God. So it is globally proved that superstitions are still existed in our own society as well as all over the world http://www.preservearticles.com/201104265986/sample-essay-superstitions.html Objectives of the Study This study is being carried out to achieve certain objectives which are: 1. To examine historically common superstitions in students of iiui. 2. To analyze as well as highlight the reasons why most of the students still believe on such perceptions. 3. To appraise the extent of the impact of these practices of superstitions on the studies and behavior of students. Research questions of the study. What are the historical common superstitions in students? What is the reasons behind superstitions among students? What are the impact of these beliefs on the behavior and studies of students? THEORY. Superstitious Pigeons. One of Skinners experiments examined the formation of superstition in one of his favorite experimental animals, the pigeon. Skinner placed a series of hungry pigeons in a cage attached to an automatic mechanism that delivered food to the pigeon at regular intervals with no reference whatsoever to the birds behavior. He discovered that the pigeons associated the delivery of the food with whatever chance actions they had been performing as it was delivered, and that they subsequently continued to perform these same actions. One bird was conditioned to turn counter-clockwise about the cage, making two or three turns between reinforcements. Another repeatedly thrust its head into one of the upper corners of the cage. A third developed a tossing response, as if placing its head beneath an invisible bar and lifting it repeatedly. Two birds developed a pendulum motion of the head and body, in which the head was extended forward and swung from right to left with a sharp movement followed by a somewhat slower return. Skinner suggested that the pigeons behaved as if they were influencing the automatic mechanism with their rituals and that this experiment shed light on human behavior: The experiment might be said to demonstrate a sort of superstition. The bird behaves as if there were a causal relation between its behavior and the presentation of food, although such a relation is lacking. There are many analogies in human behavior. Rituals for changing ones fortune at cards are good examples. A few accidental connections between a ritual and favorable consequences suffice to set up and maintain the behavior in spite of many unreinforced instances. The bowler who has released a ball down the alley but continues to behave as if she were controlling it by twisting and turning her arm and shoulder is another case in point. These behaviors have, of course, no real effect upon ones luck or upon a ball half way down an alley, just as in the present case the food would appear as often if the pigeon did nothing—or, more strictly speaking, did something else. Modern behavioral psychologists have disputed Skinners superstition explanation for the behaviors he recorded. Subsequent research (e.g. Staddon and Simmelhag, 1971), while finding similar behavior, failed to find support for Skinners adventitious reinforcement explanation for it. By looking at the timing of different behaviors within the interval, Staddon and Simmelhag were able to distinguish two classes of behavior: the terminal response, which occurred in anticipation of food, and interim responses, that occurred earlier in the interfood interval and were rarely contiguous with food. Terminal responses seem to reflect classical (as opposed to operant) conditioning, rather than adventitious reinforcement, guided by a process like that observed in 1968 by Brown and Jenkins in their autoshaping procedures. The causation of interim activities (such as the schedule-induced polydipsia seen in a similar situation with rats) also cannot be traced to adventitious reinforcement and its details are still obscure (Staddon, 1977). This experiment was also repeated on humans, in a less controlled manner, on the popular British TV series Trick or Treat, leading to similar conclusions to Skinner. SIGNIFICANCE OF THE STUDY. Every social phenomenon needs some cognitive and concrete requirements to exist and to come into being. Development is a social phenomenon; reaching the goals of development is among the primary goals of every society and reaching development needs concrete and cognitive requirements. If these requirements are not met and fulfilled, the manifestation development will be impossible. During the 1960s, some thinkers focused much on culture and believed that if we do not change peoples attitudes and beliefs, we can not reach development. We should modernize the culture. The 244. Univers. J. Edu. Gen. Stud. cognitive and the cultural elements of the society are the infrastructure for any kind of economic growth and development. In order for our country to survive, it must reach the level of other developed and industrial society in the shortest time possible from technical and economical point of view. Such a movement requires highly motivated people with a high level of knowledge and high cultural growth. Those people who just wait for the invisible and heavenly hands, magicians and sorcerers for help and consider the diligent attempts useless could not be good soldiers for the development of a nation. Regarding the cognitive and cultural factors for the development of the society, it can be said that when a society is entangled in superstitions, it does not have necessary cognitive requirements for the true development (Sepehr, 2005). From a functional point of view, it can be said that superstitious beliefs create negative functions which, in turn, limit the accomplishment of the development. These negative factions are as follows: A-superstitious ideas and beliefs impose are involved in superstitions, the rulers of the society can rule them based on these superstitions and false imagination and pursue their own benefits and the people will be just a useless mass for them. B- Development of superstitious ideas draws and shows a very bad picture of our society to the world. C- Social problems; by following the track of many social problems, we can see the role of superstitious beliefs in their occurrence. So it can be said that if a human being places his life on nil and nihilism, instead of reality and truth, his self-confidence will decrease , and he will rely in superstitious beliefs, and as a result he will get far and away from research and finally this will be a barrier for development and growth of the society as a whole. This is one of the negative effects of the inclination to superstition on individuals and society. Methodology: A methodology is usually a guideline system for solving a problem, with specific components such as phases, tasks, methods, techniques and tools (Irny, S.I. and Rose, A.A. 2005). Methodology can properly refer to the theoretical analysis of the methods appropriate to a field of study or to the body of methods and principles particular to a branch of knowledge (The American Heritage, 2009). It is system of principles or methods of procedure in any discipline, such as education, research, diagnosis, or treatment (Elsevier, 2009). Methodology is the analysis of the fundamentals of methods or rules used by a discipline. Methodology has the principles, practices and procedures in a field of study. It is the theoretical analysis of the methods (Gergedan,2008). Research Design: Research design is the description of the overall structure of the intended research identifying the various element or components of research, the type of each element, and how these elements relate to each other. The purpose of research design is to select and define the overall structure and methods of intended research that will enable us to answer the initial research question effectively and efficiently. There are two types of research designs which are used in sociological research, one is qualitative and other is quantitative. Quantitative Research: Quantitative research is research that uses numerical analysis. In essence, this approach reduces the data into numbers. Quantitative research refers to the systematic empirical investigation of social phenomena via statistical, mathematical or computational techniques. The process of measurement is central to quantitative research because it provides the fundamental connection between emperical observation and mathematical expression of quantitative relationships. Quantitative data is any data that is in numerical form such as statistics, percentages ( Lisa M, 2008). Universe: The element of population or area of study under research problem from which a sample is choosen is universe, or any set of indivisuals having some common characteristics, under study made universe. The study was conducted INTERNATIONAL ISLAMIC UNIVERSITY of Islamabad to see the impact of superstitions among students related studies. First hand information have been collected from the students of university. Population: Any set of people or events from which the sample is selected and to which the study results will generalize is known as population. Population of study is the students on INTERNATIONAL ISLAMIC UNIVERSITY Islamabad. The study was conducted in Islamabad Sample method: Sampling is the process of selecting units (e.g., people, organizations) from a population of interest. By studying the sample results are generalized back to the population from which they were chosen. The sample is consists of students of iiui. Sample size: Using convinient sampling data was collected from 100 students of INTERNATIONAL ISLAMIC UNIVERSITY ISLAMABAD. Respondents were reached by researcher herself and it was requested to respondents to give correct and honest information. And respondents were assured that information would remain confidential and utilized only for research purpose. Tool for data collection: Data was collected through questionnaire. Questionnaire: In this research questionnaire method was used for gathering data. A questionnaire is a research instrument consisting of a series of questions and other prompts for the purpose of gathering information from respondents. The researcher was approached indivisually to all the respondents, and respondents were also briefed about the nature and purpose of questionnaire. Pretesting: The questionnaire was pretested for identifying questionnaire problems. These can occur for both respondents and interviewers regarding question content, skip patterns, or formatting. Questionnaire was pretested to assess whether the questionnaire was relevant to and easily understood by the respondents, in terms of the concepts and the way they phrased in the questions. Data analysis: Coding: Coding refers to an analytical process in which data, in both quantitative form (such as questionnaires results) or qualitative (such as interview transcript) categorised to facilitate analysis. Coding means the transformation of data into a form understandable by computer software. The classification of information is an important step in preparation of data for computer processing with statistical software. Tabulation: The systematic and orderly arrangement of facts and figures in columns and rows is called tabulation. The process of placing classified data into tabular form is known as tabulation. A table is a symmetric arrangement of statistical data in rows and columns. Rows are horizontal arrangements whereas columns are vertical arrangements. It may be simple, double or complex depending upon the type of classification. Statistical analysis: Statistical analysis refers to a collection of methods used to process large amounts of data and report overall trends. Statistical analysis is particularly useful when dealing with larger data. Statistical analysis provides ways to objectively report on how unusual an event is based on historical data. In other word it is statistical analysis. View as multi-pages

Evolution of Australian Flora: Hymenopteran Visual Systems

Evolution of Australian Flora: Hymenopteran Visual Systems Abstract Very little work has been done on the evolution of floral colour diversity, outside of Europe and the Middle East. In particular, we know almost nothing about the evolution of the Australian flora in the context of hymenopteran visual systems. Such a study is likely to be important due to the geologically long isolation of the Australian flora and the high proportion of endemic plant species. The aims of this study were to investigate the colour of Australian native flowers in the context of hymenopteran visual systems, the innate colour preferences of Australian native bees (Trigona carbonaria), and the interactions between native bees and a food deceptive orchid (Caladenia carnea). Firstly, I found that the discrimination thresholds of hymenopterans match up with floral colour diversity and that hymenopterans appear to have been a major contributor to flower colour evolution in Australia. Secondly, I found that Trigona carbonaria has innate preferences for wavelengths of 422, 437 a nd 530 nm. Thirdly, I found that bees were able to habituate to orchid flowers based on colour, thus potentially explaining the colour polymorphism of Caladenia carnea. Together, my study suggests that the evolution of the Australian flora has been influenced by hymenopterans. 1. Introduction Plant-pollinator interactions The mutual interactions between pollinators and plants have been suspected in driving angiosperm radiation and diversification in the past (Regal 1977; Crepet 1984; McPeek 1996). The obvious mutual benefit is that pollinators depend on the pollen and/or nectar of flowering plants for food and, in return, partake in the incidental transfer of pollen necessary for plant reproduction (Faegri and van der Pijl 1978; Harder, Williams et al. 2001). Worldwide, it is estimated that more than 67% of angiosperm plants rely on pollination by insects (Tepedino 1979). Hence, pollinators play a critical role in the persistence and survival of flowering plants, which are of high value to the human food chain (Kearns and Inouye 1997; Klein, Vaissiere et al. 2007). Flower colour signals and sensory exploitation Colour is the result of the visible light being absorbed or reflected off objects and then processed by the eye and brain of an animal (Le Grand 1968). Light is part of the electromagnetic spectrum, and can be quantified by the wavelength of different photons of energy (Bueche 1986). The wavelengths reflected off the object are perceived by a visual system as the object’s colour. For example, light that appears blue to a human observer can be described by a dominant wavelength of 400nm, whilst light that appears red is 700nm. Ultraviolet light falls between 300-400nm and can be seen by bees, but not humans. Flower colours have been influenced by the sensory receptors of insects, including their colour vision, which is different to human vision. Humans have a red, blue and green receptor (Chittka and Wells 2004). In contrast insects have a UV, green and blue receptor (Chittka and Wells 2004). As human vision is very different to a hymenopterans’ colour visual system, one cannot discuss a bees’ colour perception according to human colour terms such as red or blue. Therefore, this thesis will discuss colours according to wavelength. Colour is one of the most important floral signals plants use to communicate information to insect pollinators (Giurfa, Vorobyev et al. 1996; Dyer, Spaethe et al. 2008). Although it is known that pollinators select flowers based on morphology, nectar availability, size, and odour (Giurfa, Nà ºÃƒ ±ez et al. 1994; Kunze and Gumbert 2001; Spaethe, Tautz et al. 2001; Whitney and Glover 2007), colour is known to play a critical role in enabling pollinators to detect and discriminate target flowers from a biologically important distance of up to 50 cm (Giurfa, Vorobyev et al. 1996; Dyer, Spaethe et al. 2008). Our understanding of the evolution of colour vision in insects has advanced considerably in recent years. In the past, studies of colour perception were limited due to little information on the colour visual system of insects (Frisch 1914; Daumer 1956). It is now possible to evaluate how flower visual signals appear to the visual system of hymenopteran pollinators, using spectrophotometer and colorimetry techniques, which allows quantitative evaluations of how complex colour information is perceived by insect pollinators (Chittka 1992) (fig. 1). Previous research has revealed that colour discrimination in hymenopterans is phylogenetically ancient, with different hymenopterans sharing similar colour perception (Helversen 1972; Chittka and Menzel 1992). Importantly, colour discrimination in the hymenoptera is known to predate the evolution of floral colour diversity (Chittka 1996). Here, recent research has revealed remarkable convergence in the evolution and distribution of floral colours in different parts of the world. Specifically, in a seminal paper, Chittka (1996) showed that flowering plants in both Europe and the Middle East have adapted their colour signals to the visual systems of bees, with flower colours in these regions closely matched to the visual receptors of hymenopterans (Chittka 1996). However, outside of Europe and the Middle East, very little work has been done on the evolution of floral colour diversity. In particular, we know almost nothing about the evolution of the Australian flora in the context of hy menopteran visual systems. This is an important question to investigate due to the long isolation of the Australian flora and the high proportion of endemic plant species. I hypothesise that the Australian floral coloration will closely match the discrimination thresholds of hymenopterans as recent evidence suggests that insect pollinators supported the early spread of flowering plants (Hu, Dilcher et al. 2008). Innate colour preferences of bees Charles Darwin was the first to state that innate preferences could allow an inexperienced pollinator to find a food source (Darwin 1877). Pollinators may use certain traits of flowers such as morphology, scent, temperature and colour to locate food (Heinrich 1979; Menzel 1985; Dyer, Whitney et al. 2006; Raine, Ings et al. 2006). Previous studies evaluating innate colour preferences have tended to focus on two species: the European honey bee (Apis mellifera) and bumblebee (Bombus terrestris). By contrast, no studies have looked at the innate colour preferences of Australian bees and how this affects their choices for flowers. We know that European bumblebees and honeybees show strong preferences for violet and blue (400-420nm) throughout their geographic range (Chittka, Ings et al. 2004) ,which interestingly correlates with the most profitable food sources (Lunau and Maier 1995; Chittka and Raine 2006). These preferences are likely to have had an impact on the relative success of dif ferent flower colours in regions where these bees are dominant pollinators (Chittka and Wells 2004). Consequently, information on the innate preferences of Australian bees will be important to understand hymenopteran plant interactions in the Australian context. Pollinator learning and food deceptive orchids Most plants reward their pollinators with nectar or pollen. However, some species do not offer floral rewards and, instead, employ a range of deceptive techniques to trick insects into performing the task of pollination. Deceptive pollination strategies are particularly well known and widespread among orchids (Jersà ¡kovà ¡, Johnson et al. 2006). For instance, approximately 400 orchid species are known to achieve pollination through sexual deceit, luring unsuspecting male insects to the flower through olfactory, visual and tactile mimicry of potential mates. More common are food deceptive orchids which are believed to number as many as 6,000 species (one-third of orchids) (Jersà ¡kovà ¡, Johnson et al. 2009). Food mimicking orchids employ bright colours to falsely advertise the presence of a reward to attract naive pollinators (Ackerman 1986; Nilsson 1992; Jersà ¡kovà ¡, Johnson et al. 2006). The common occurrence of food deception in orchids suggests that this form of pollinat ion by deception is an extremely successful evolutionary strategy (Cozzolino and Widmer 2005). Visits by pollinators to deceptive plants are influenced by pollinator learning. In the case of sexual deception, previous research shows that insects quickly learn unrewarding flower decoys and avoid them. For example, male insects learn to avoid areas containing sexually deceptive orchids (Peakall 1990; Wong and Schiestl 2002). However, whether insects can learn to avoid food deceptive orchids remains to be investigated. In addition, high levels of variability in floral traits, particularly flower colour and floral scent, may interrupt the associative learning of insects by preventing their ability to become familiar with deceptive flowers (Schiestl 2005). Indeed, variation in colour, shape and fragrance is evident in non-model food-deceptive orchids (Moya and Ackerman 1993; Aragà ³n and Ackerman 2004; Salzmann, Nardella et al. 2007). However, previous studies have only looked at pollinator preference for colour morphs (Koivisto, Vallius et al. 2002), rather than assessing if vari able flower colour slows down the ability of naive pollinators to learn unrewarding flower decoys. Furthermore, there is a need to incorporate a combination of colour vision science and behavioural ecology to understand how a bee perceives the orchid flowers, as bees have a different visual system to humans. Although humans cannot see ultra-violet light, UV sensitivity is common in some animals (Tovà ©e 1995). UV sensitivity has been found in insects, birds, fish and reptiles (Marshall, Jones et al. 1996; Neumeyer and Kitschmann 1998; Cuthill, Partridge et al. 2000; Briscoe and Chittka 2001). Studies on UV vision in an ecological context have mainly focused on species specific signalling and mate choice (Bennett, Cuthill et al. 1996; Bennett, Cuthill et al. 1997; Pearn 2001; Cummings, Garc et al. 2006). However, few studies have looked at the role of UV signals in attracting bees to orchids. Previous studies have shown that the presence of UV reflecting crab spiders attracts honeybees to daisies (Heiling, Herberstein et al. 2003). In a similar study, Australian native bees (Austroplebia australis) were attracted but did not land on flowers with UV reflecting crab spiders (Heiling and Herberstein 2004). However, the role of UV signals in orchids is not well studied. In particular, it is not known if the UV signal is important in attracting naive bees to food deceptive orchids. Thus, it will be useful to know if UV signals might also serve to lure naive pollinators to deceptive flowers to understand deceptive pollination. Aims This project will investigate Australian flower colour diversity in the context of hymenopteran visual systems, the innate colour preferences of Australian native bees (Trigona carbonaria) and their interactions with a food deceptive orchid (Caladenia carnea). This study aims to address the following questions: 1. Is there a link between hymenopteran vision and Australian floral coloration? 2. Does an Australian native bee (Trigona carbonaria) have innate colour preferences? 3. Does a food deceptive orchid (Caladenia carnea) exploit the innate colour preferences of Trigona carbonar 2. Methods Part 1. Is there a link between hymenopteran vision and Australian floral coloration? Flower collection and spectral reflectance functions of Australian native plant flowers Australian native flowers were collected from Maranoa Gardens, Balwyn (melway ref 46 F7). Maranoa Gardens was chosen due to the diverse collection of species from all over Australia. Flowers were collected once a month, from May to January. A colour photograph was taken of the flower for identification. I also took a UV photograph for all flowers, using a digital UV camera [Fuji Finepix Pro S3 UVIR modified CCD for UV imaging] with calibrated UV-vis grey scales (Dyer, Muir et al. 2004). As UV rays are invisible to the human eye (Menzel and Blakers 1976; Dyer 2001), this photo enabled any UV reflectance areas of the flower to be measured by the spectrophotometer (Indsto, Weston et al. 2006). The spectral reflection functions of flowers were calculated from 300 to 700 nm using a spectrophotometer(S2000) with a PX-2 pulsed xenon light source attached to a PC running SpectraSuite software (Ocean Optics Inc., Dunedin, FL, USA). The spectrophotometer was used to quantify the colour of the flower as wavelength. The white standard was a freshly pressed pellet of dry BaSO4, used to calibrate the spectrophotometer. A minimum of three flowers from each plant were used for each spectral analysis. I evaluated a sample of 111 spectral measurements from Australian flowering plants, encompassing a representative variety of plant families (fig. 2). Correlations between spectral reflectance functions of different plant flowers and trichomatic vision of the honeybees To understand if there is a link between hymenopteran vision and Australian native flowers, I used the methodology used by Chittka and Menzel (1992). In that study, Chittka and Menzel looked for correlations between flower spectra sharp steps of different plant flowers and trichomatic vision of the honeybees. Sharp steps are a rapid change in the spectra wavelength (Chittka and Menzel 1992) (see fig. 3 for an example of a sharp step). These steps cross over different receptors, thereby producing vivid colours that stand out from the background. Furthermore, a colour signal will be more distinguishable to a pollinator if the sharp steps match up with the overlap of receptors in a visual system. Thus, the main feature of a flower wavelength is a sharp step. For this study, I defined a sharp step as a change of greater than 20 % reflectance in less than 50 nm of the bee visual spectrum. The midpoint of the slope was determined by eyesight as described by Chittka and Menzel (1992), as th e nature of curves varied with each flower. The absolute numbers of sharp steps within each flower spectra were counted. The frequencies are shown in fig. 4b. As hybrid plants are artificially selected by humans, hybrid flowers were not included in the analyses. Generating a Hexagon colour space To evaluate how flower colours are seen by bees, I plotted the flower colour positions in a colour hexagon space. A colour space is a numerical representation of an insect’s colour perception that is suitable for a wide range of hymenopteran species (Chittka 1992). In a colour space, the distances between locations of a two colour objects link with the insect’s capacity to differentiate those colours. To make the colour space, the spectral reflectance of the colour objects were required, as well as the receptor sensitivities of the insect. For Trigona carbonaria, the exact photoreceptors are currently unknown, but hymenopteran trichromatic vision is very similar between species as the colour photoreceptors are phylogenetically ancient (Chittka 1996). Thus, it is possible to model hymenopteran vision with a vitamin A1 visual template (Stavenga, Smits et al. 1993) as described by Dyer (1999). I then predicted how the brain processed these colour signals by using the avera ge reflectance from each flower, and calculating the photoreceptor excitation (E) values, according to the UV, blue and green receptor sensitivities (Briscoe and Chittka 2001) using the methods explained by Chittka (1992). The UV, blue and green E-values of flower spectra were used as coordinates and plotted in a colour space (Chittka 1992). The colour difference as perceived by a bee was calculated by the Euclidean distance between two objects locations in the colour hexagon space (Chittka 1992). Modelling the distributions of Australian flower colours according to bees’ perception I analysed the most frequent flower colour according to a bees’ colour perception using the methods of Chittka, Shmida et al. (1994). I plotted the Australian flower colours in a colour space (Fig 5a). A colour space is a graphical representation of a bees’ colour perception. A radial grid of 10 degree sectors was placed over the distribution of colour loci and the number of floral colour loci within each sector was counted(fig. 5b). Part 2. Does an Australian native bee (Trigona carbonaria) have innate colour preferences? Insect model and housing Trigona carbonaria is an Australian native stingless bee that lives in colonies of 4000-10000 individuals (Heard 1988). In the wild, stingless bees live in hollows inside trees (Dollin, Dollin et al. 1997). Trigona carbonaria has a similar social structure to the honeybee (Wille 1983). They are common to North Eastern Australia and are a potentially important pollinator for several major commercial crops (Heard 1999). A research colony (ca. 4000 adults and 800 foraging individuals) of T. carbonaria was propagated for the experiments by Dr Tim Heard (CSIRO Entomology, 120 Meiers Rd, Indooroopilly 4068, Australia) as described in the paper by Heard (1988). Bees were maintained in laboratory conditions so that no previous contact with flowers had been made. For this study, a colony was placed in a pine nest box (27.5 x 20 x 31 cm; LWH) and connected to the foraging arena by a 16 cm plexiglass tube, containing individual shutters to control bee movements. All laboratory experiments were conducted in a Controlled Temperature Laboratory (CTL) at Monash University, Clayton, School of Biological Sciences (CTL room G12C dimensions 3 x 5m), during the months of July 2009- January 2010. Relative humidity (RH) was set to 30%, and the temperature was set to 27  °C (SPER-Scientific Hygrometer, Arizona, USA), as this set up approximately matches conditions in Queensland for insect pollinators (Heard and Hendrikz 1993). Illumination (10/14 hr day/night) was provided by four Phillips Master TLS HE slimline 28W/865 UV+ daylight fluorescent tubes (Holland) with specially fitted high frequency (>1200Hz) ATEC Jupiter EGF PMD2x14-35 electronic dimmable ballasts which closely matches daylight conditions for trichromatic hymenoptera (Dyer and Chittka 2004). The flight arena (1.2 x 0.6 x 0.5m; LWH) was made of a coated steel frame with laminated white wooden side panels. The arena floor was painted foliage green, and the arena lid was covered with UV transparent plexiglass. Experimen ts were conducted from 1pm-3pm to control for time of day, as this is when bees are most active (Heard and Hendrikz 1993). Pre-training Bees were habituated to the flight arena for seven days. Naive foragers (i.e. bees that had never encountered real or artificial flowers) were initially pre-trained to forage in the flight arena on three rewarding aluminium sanded disks (25 mm in diameter), with a 10-ÃŽ ¼l droplet of 15% (w/w) sucrose solution placed in the centre. The disks were placed on vertical plastic cylinders (diameter = 25 mm, height = 100 mm), to raise them above the floor of the flight arena so that bees learnt to fly to the disks. Pre-training allows bees to become habituated to visiting artificial flowers for further experiments. The aluminium sanded disks were chosen as neutral stimuli because they have an even spectral reflectance curve in the spectral visual range of the bees, fig. 6. The sucrose solution reward on these training disks was refilled using a pipette after it was consumed by foraging bees. The spatial positions of these training disks were pseudo randomised, so that bees would not learn t o associate particular locations with reward. Bees were allowed a minimum of two hours to forage on the pre-training disks before data collection Innate colour preference testing To test the innate colour preferences of naive bees, I performed simultaneous choice experiments with flower-naive bees using artificial flowers that simulated the floral colours of natural flowers. The aluminum rewarding disks were replaced by the ten unrewarding, coloured artificial disks in the original flight arena. Artificial flower stimuli were cut in a circle (70 mm diameter) from standardized colour papers of the HKS-N-series (Hostmann-Steinberg K+E Druckfarben, H. Schmincke Co., Germany). In each experiment the same set of ten test colours (1N pale yellow, 3N saturated yellow, 21N light pink, 32N pink, 33N purple, 50N blue, 68N green, 82N brown, 92N grey, back of 92N white) were used. These colours were chosen as they have been used in innate colour experiments with other hymenopterans (Giurfa, Nà ºÃƒ ±ez et al. 1995; Kelber 1997; Gumbert 2000), and the colours are also widely used in other bee colour experiments (Giurfa, Vorobyev et al. 1996). The coloured paper disks were placed on vertical plastic cylinders (diameter = 15 mm; height = 50 mm), to raise them above the floor of the flight arena. The gate was shut in the arena to ensure the bees used in each trial were separated from the next trial. The number of landings and approaches to the stimuli were recorded for one hour. Approximately 200 bees were used for each trial. The spatial positions of the artificial flowers were pseudo randomised in a counter balance fashion every 15 minutes. After each trial, the colour disks were aired and wiped with a paper tissue to remove possible scent marks, which are known to affect experiments with honeybees (Schmitt and Bertsch 1990; Giurfa and Nà ºÃƒ ±ez 1992). I conducted each subsequent trial after removing the used bees from the system, to ensure that the bees in the next trial were replaced with naive foragers. It is known that perception of colour can be influenced by background colour (Lunau, Wacht et al. 1996). Therefore, I also tested colour choices on other background colours of grey and black. The results are qualitatively similar (fig. 8b), so only data from the biologically relevant green background was used for subsequent analysis. Analysis of colour stimuli As bees see colours differently to humans, I quantified stimuli according to five parameters: wavelength, brightness, purity (saturation), chromatic contrast to the background and green receptor contrast. Dominant wavelength was calculated by tracing a line from the centre of the colour hexagon through the stimulus location to the corresponding spectrum locus wavelength (Wyszecki and Stiles 1982). Brightness was measured as the sum of excitation values of the UV, blue and green receptors (Spaethe, Tautz et al. 2001). Spectral purity of the stimulus was calculated by the percentage distance of the stimulus in relation to the end of the spectrum locus (Chittka and Wells 2004). Chromatic contrast was calculated as the distance of a colour stimulus from the centre of the colour hexagon relative to the background. Chromatic contrast is important as perception can be affected by background colour (Lunau, Wacht et al. 1996). Green receptor contrast was measured as the green receptor excitat ion from a stimulus relative to the background (Giurfa, Nà ºÃƒ ±ez et al. 1995). This contrast is relevant as green receptors and green contrast are known to affect motion in bees (Srinivasan, Lehrer et al. 1987). Statistical analyses The impact of wavelength on number of landings by Trigona carbonaria was investigated using a single factor analysis of variance (ANOVA) and a post hoc Tukeys HSD test (ÃŽ ±=0.05) (Quinn and Keough 2002) using the number of landings as the dependent variable and wavelength of stimuli as the independent variable. Brightness, purity (saturation), chromatic contrast to the background and green receptor contrast of stimuli were analysed using the Spearmans rank correlation test against choices. Statistical analyses were conducted using R statistical and graphical environment (R Development Core Team, 2007). Statistical significance was set to P≠¤0.05. Part 3. Does a food deceptive orchid (Caladenia carnea) exploit the innate colour preferences of Trigona carbonaria? Plant model Caladenia carnea is a widespread species, common to eastern Australia. The orchid is highly variable in colour, ranging from pink to white. It is pollinated by Australian native bees of the Trigona species (Adams and Lawson 1993).With bright colours and fragrance, this orchid achieves pollination by food mimicry (Adams and Lawson 1993). Thus, due to the colour variation of the orchid, C. carnea is an excellent model with which to examine floral exploitation of potential pollinators. Caladenia carnea flowers were supplied by private growers from the Australasian Native Orchid Society. Can Trigona carbonaria perceive a difference between pink and white flowers of Caladenia carnea? Colorimetric analysis of the pink and white Caladenia carnea flowers were used to investigate whether different colours of the orchid would be perceived as similar or different to a bees’ visual system. A spectrophotometer was used to take four measurements of each flower colour (pink versus white). The actual measurements used in the analysis were an average of each colour (Dyer, Whitney et al. 2007). To predict the probability with which insect pollinators would discriminate between different flowers, these spectra were plotted as loci in a hexagon colour space (Chittka 1992) (see ‘hexagon colour space’ methods). Choice experiments I conducted trials testing the preferences of bees when offered a dichotomous choice between a white versus pink Caladenia carnea flower. Each trial took place inside a flight arena. Each white and pink flower used in a trial were matched for size, placed into indiviual plastic containers (diameter= 5 cm, height=5 cm) and placed in the arena with a distance of 10 cm between flower centres. Each container was covered with Glad WrapTM (The Clorox Company, Oaklands, CA, USA) to remove olfactory cues as they are known to in ¬Ã¢â‚¬Å¡uence the choice behaviour of honeybees (e.g. Pelz, Gerber et al. 1997; Laska, Galizia et al. 1999). Approximately 50 bees were let into the arena for each trial. The  ¬Ã‚ rst contact made by a bee with the Glad WrapTM within a distance of 4 cm, was recorded as a choice of that  ¬Ã¢â‚¬Å¡ower (Dyer, Whitney et al. 2007). The number of landings were recorded to the flowers for five minutes. After each trial, the Glad WrapTM was changed to prevent scent ma rks. In addition, individual flowers and spatial positions were randomised. Individual bees were sacrificed after each trial to avoid pseudo replication. Does the UV signal affect the attraction of bees to orchid flowers? To investigate whether the UV re ¬Ã¢â‚¬Å¡ectance of the dorsal sepal affected the response of bees, I offered bees the choice between two white orchids, one with a UV signal and the other without (N=16). The UV signal was removed by applying a thin layer of sunscreen (Hamilton SPF 30+, Adelaide, SA, Australia) over the dorsal sepal. Spectral reflectance measurements were taken to ensure that the sunscreen prevented any reflection of UV light (below 395 nm) from the sepals and did not change the reflectance properties of the orchid. In addition, spectral measurements of orchid sepals under Glad WrapTM confirmed that the foil was permeable to all wavelengths of light above 300 nm and did not obscure the reflectance of flowers. Do bees display preferences when choosing between pink versus white orchid flowers? To assess whether bees show a preference for pink or white variants of the orchid Caladenia carnea, I offered bees a simultaneous choice between a pink or white flower (N=16). See procedures for choice testing. Do bees habituate to non-rewarding orchids based on differences in floral coloration? I conducted a two stage experiment to investigate if bees could learn to habituate to a non-rewarding flower colour over time and whether bees adjusted their subsequent flower choice depending on the flower colour encountered previously. At stage 1 of the experiment, native bees were presented with one flower, either white or pink. Flowers were placed in a container with Glad WrapTM. Landings to the flower were recorded at the start and again at the 30 min mark. At stage 2, the flower from stage 1 was swapped with a new flower colour and the number of landings were scored for 5 minutes. Flowers were randomised and Glad WrapTM changed to prevent scent marks after each trial. Once again, bees were used only once per experiment. Statistical analyses For experiments 2, 3 4, numbers of landings by naive bees to flower pairs were compared using two tailed paired t-tests. A two factor ANOVA was used to analyse whether bees habituate to non-rewarding orchids based on differences in floral coloration. The dependent variable was the number of landings and the two independent variables were previous flower colour and new flower colour. 3. Results Part 1. Is there a link between hymenopteran vision and Australian floral coloration? Correlations between the inflection curves of different plant flowers and trichomatic vision of hymenopterans The analysis of 111 spectral reflection curves of Australian flowers reveals that sharp steps occur at those wavelengths where hymenoterans are most sensitive to spectral differences (fig. 4b). There are three clear peaks in sharp steps (fig. 4b). It is known that hymenopteran trichomats are all sensitive to spectral differences at approximately 400 and 500 nm (Menzel and Backhaus 1991; Peitsch, Fietz et al. 1992). Hence, the peaks at 400 and 500 nm can be discriminated well by hymenopteran trichomats, as illustrated by the inverse Δ ÃŽ »/ÃŽ » function (solid curve shown in fig. 4a) of the honeybee (Helversen 1972), which is an empirically determined threshold function which shows the region of the electromagnetic function that a bees’ visual system discriminates colours best. In summary, the spectral position of receptors of trichomatic hymenopterans are correlates with steps in the floral spectra of Australian flowers. The distributions of Australian flower colours according to bees’ perception The floral colour loci are strongly clustered in the colour hexagon (fig. 5a). Blue-green flowers are the most common in the perception of bees, while pure UV flowers were the rarest (fig. 5b). Part 2. Does an Australian native bee (Trigona carbonaria) have innate colour preferences? Effect of brightness, spectral purity, chromatic contrast and green receptor contrast on colour choices There was no significant effect of stimulus brightness on choice frequency (rs= 0.333, n=10, p= 0.347; fig. 7a). There was no significant effect of spectral purity on choice frequency (rs = 0.224, n=10, p= 0.533; figure 7b). There was no significant correlation effect of chromatic contrast on choice frequency (rs = 0.042, n=10, p= 0.907; figure 7c). There was no significant effect of green receptor contrast on choice frequency (rs = 0. 0.552, n=10, p= 0.098; figure 7d). Effect of wavelength on colour choices Stimuli colours are plotted in figure 8a, as they appear to a human viewer to enable readers to understand the correlation between colour choices. However, all statistical analyses were conducted with stimuli plotted as wavelength due to the different visual perception of bees and humans (Kevan, Chittka et al. 2001). There is a significant effect of wavelength on the number of landings by Trigona carbonaria (Single factor ANOVA, F9,110 = 5.60, P