Change Management Business Process Re Engineering Essay

Change management – Business Process Re-Engineering Pakn’ Save is a very good example of Business Process Re-Engineering done in ordination with Foodstuff NZ. Pak’n Save came in to form as an after effect of an outing by various Foodstuff officials to the United States. On that visit they saw operations of Cub Foods worked by SuperValu. Pak’nSave worked by Safeway, and various other general stores. Foodstuffs then replicated this configuration in the New Zealand market. The first Pak’nSave organisation was just about was just about an indistinguishable clone of Safeways’s Pak â€Å"N† Save chain in Northern California. (Wikipedia, 2013) Business Policy – Mission and Strategy Pak’n Save of New Zealand’s follows clear policy of providing lowest food prices, then why should Kiwis shop anywhere else? Further Pak’n Save loves to capitalize on being proudly New Zealand owned and operated, their patriotic feeling towards their country has increased their business. (Pak n Save, n.d.) Founded in 1985, Pak’nSave is one of the largest supermarket in New Zealand to be ever founded by local New Zealand. As of March 2013, there are 50 Pak nSave stores operating across the North and South Islands of New Zealand. Pak’nSave key policy is to provide everyday food and groceries at low prices which they state in their current slogan â€Å"Our Policy: NZ’s Lowest Food Prices†. Customers are also asked to pack their own bags, and charged for plastic bags in most stores. Many stores offer boxes set onShow MoreRelated1.0 INTRODUCTION In this chapter, the background to the study is given, a statement of the1100 Words   |  5 PagesTHE STUDY Business reality has been modified in the last few decades and is characterized by change. More than 60 years ago Coch and French (1948) already said â€Å"frequent changes in people’s work are necessary to keep up with competitive conditions and technological development†. In the same line, Charles F. Kettering holder of more than 100 patents and former head of research for General Motors said â€Å"If you have always done it that way, it is probably wrong†; highlighting the role of change to succeedRead MoreBHS 312 Case Study 4894 Words   |  4 PagesModule 4 Case Assignment Principles of Management Dr. Rhonda Hatfield 26 February 2014 Module 4 Case: The Management Function of Directing Case Study Assignment Expectations: After reading the article, please respond to the following questions. 1) Briefly summarize the article. 2) Define and discuss the directing function of management. 3) Based upon the information in the article, what are some examples of how you would use this management function? Compare that to some actual examplesRead MoreExam Summary949 Words   |  4 PagesDescribe the selection, acquisition and implementation of ES ERP – Enterprise Resource planning systems integrate internal and external management information across the entire organisation , embracing finance, manufacturing, sales and service, customer relationship management, Software and Vendor selection Key words * ERP purchase process * Vendors research * Request for bids(RFB) * Contractual agreement Discussion question 1.) As Welch’s food narrowed down theRead MoreEssay about mgt2071009 Words   |  5 PagesImitation Read  Answer  Items  for  Question  3 Inertia Read  Answer  Items  for  Question  3 Shift  of  Paradigm Read  Answer  Items  for  Question  3 Sub-optimization Read  Answer  Items  for  Question  3 Change  of  the  Game Read  Answer  Items  for  Question  3 Answer A. Knowledge  workers,  coupled  with  a  deep  competency  in  a  process  technology  creates  lasting  competitive  advantage. B. A  monolithic  culture  produces  decreasing  alternatives  and  a  narrow  path  to  succes. C. Biological  to  Socio-cultural  model;  Analytical  to  Holistic  ThinkingRead MoreBusiness Management At Corporate And Our Facilities Essay946 Words   |  4 PagesThe People Process Restructuring – In 2014 my current employer Silfex has entered a restructuring hierarchy. During this year we obtained a new General Manager and he is focused on aligning our business with our owner’s structure and combining similar business operations. Our previous structure was considered a Matrix structure that had direct reports from both corporate and our site, this system caused tension between managers at corporate and our facility. In this change our General ManagerRead MoreApplication Of Software Engineering Field911 Words   |  4 Pagesof the most-demanding job in software engineering field that is by differentiating between requirement engineers and architects. It is often believed that it’s a mere job title as they perform the same role. Hence we try to overcome this by clearly listing out the differences and explaining their role in the industry. We also talk about various job profiles that sums up in the category of requirement engineers and a rchitects. Keywords— Requirements Engineering; Compare Analysis; Jobs skills; Responsibilities;Read MoreProject Deliverable 2 : Business Requirements934 Words   |  4 Pages Project Deliverable 2: Business Requirements By: Justin M. Blazejewski CIS 499 Professor Dr. Janet Durgin 4 November 2012 1 Document Control Change Record Date Author Version Change Reference 11/4/2012 JMB 7.1 First attempt at Project Del. 2 Reviewers Name Position Justin Blazejewski Chief Information Officer Table of Contents Document Control 2 1 Business Requirements 4 1.1 Project Overview 4 1.2 Background including current process 4 1.3 Scope 4 1.3.1 ScopeRead More Sigitek Case Essay1316 Words   |  6 PagesSigitek Case Barriers and Drivers to change facing Smithers: Smithers has in his favor experience in reengineering business processes from when he was an engineering service manager. His style of personal management aided him in instituting corporate culture changes in a manor that was well received by Sigtek employees. This experience was needed given the long-standing organizational differences that Smithers faced between Sigteks engineering and manufacturing divisions. Another challengeRead MoreDairy Farm1419 Words   |  6 PagesAssignment-1 Dairy Farm Group-Redesign of Business Systems and Processes The Dairy Farm Group of companies founded by Sir Patrick Manson began as a small business of supplying cow’s milk to the people of Hong Kong in 1886. In the next 100 years it gradually expanded to become one of the major food retailers with more than 1350 stores, restaurants in major cities of the Asia-Pacific region with employee strength of more than 45000 employees. The main business goal of the company is to be a leadingRead MoreBusiness Process Reengineering ( Bpr ) Essay1538 Words   |  7 PagesINTRODUCTION Business process reengineering (BPR) is a management strategy for the business, a leader in origin in the early 1990s, with an emphasis on analysis and design workflow and business processes within the organization. BPR, which aims to help organizations fundamentally rethink how to do their job in order to improve customer service significantly, reduce operational costs and become competitive on a global level. Financial institutions and banks are constantly called upon to provide customer

The Negative Effects of Tourism - 3593 Words

THE NEGATIVE EFFECTS OF TOURISM on the ECOLOGY of JAMAICA by Elaina Kozyr BLPR 101.51 Introduction Tourism and the environment have a very complex and interdependent relationship. Today, tourism is one of the largest industries in todays world economy and is a great source of foreign exchange for many developing countries, whose major assets are their natural resources.1 At the same time, it is the environmental quality of a place that will determine the success of the tourism industry, since it is the main attraction for tourists. There have been a lot of arguments about whether tourism is beneficial or harmful to the environment. A lot of the developing countries whose main source of foreign exchange is tourism†¦show more content†¦Pollution: The Effects of Increasing Population and Consumption Recently, a lot of researchers have been paying attention at how the island has been stressed by heavy population load. The islands visiting population has more than tripled in twenty years Ââ€" now equal to almost half the size of its native, resident population. Although the impact is rather different if the transient population increases at this rate than if the permanent population does, an increase in the tourist population of this magnitude poses very similar challenges and problems as any other kind of population increase.4 In addition to the increasing number of tourists, the migration of native people in search of jobs drawn bytourism growth has led people to live in environmentally vulnerable locations. Such areas are already exposed to unfavorable conditions, and more pressure caused by constant overuse of these territories by people makes it more damaging to the island and its inhabitants. The heavy flow of tourists is also related to the pollution of the environment. Ordinary things that we usually dont dwell on very much can have severe consequences on such a small island as Jamaica. The use of airplanes to transport people to and from the island, growing number of vehicles contribute to pollution. This is a serious threat to an island of such proportions, the areas available to people areShow MoreRelatedNegative Effects Of Tourism1003 Words   |  5 Pagesto look more closely at the effects of tourism on an area. Being able to research online and in books is important, but to experience something hands on ultimately can change anyones viewpoint on a topic. During the duration or my tour I spent time observing and talking to store owns, residents and tour guides to help my understand how living in an area with so much tourism was. After rethinking the answers I got and picturing all the things I saw I realized that tourism ultimately has both good andRead MoreThe Ne gative Effects of Tourism3584 Words   |  15 PagesTHE NEGATIVE EFFECTS OF TOURISM on the ECOLOGY of JAMAICA by Elaina Kozyr BLPR 101.51 Introduction Tourism and the environment have a very complex and interdependent relationship. Today, tourism is one of the largest industries in todays world economy and is a great source of foreign exchange for many developing countries, whose major assets are their natural resources.1 At the same time, it is the environmental quality of a place that will determine the success of the tourism industryRead MoreTourism : Positive And Negative Effects On The Economy779 Words   |  4 Pagestraveling is increasingly rising. According to the UNWTO, the number of tourists traveling oversea yearly is over one billion (World Tourism Organization, 2016). Not only has this massive figure made tourism one of the key industries, it also makes up 10% of worldwide GDP and 6% of the total export turnover of the world (T. Rifai, 27 September 2015, personal communication). Tourism is a â€Å"fertile ground† for all nations in the world, especially developing countries to boost their economic growth, preserveRead MorePositive and Negative Effects of Tourism in Africa864 Words   |  4 PagesThe effects of tourism in Africa Ever since the ability to travel over vast amounts of distances around the world became easier with the use of innovative marvels such as the aeroplane, tourism started to grow in certain countries that had enough places of interest. Africa offered much that cannot be seen anywhere else in the world; from the ancient pyramids of Giza to the spectacular wildlife migration in the Serengeti. Tourist from around the world would pay a lot of money to see and be a partRead MoreThe Positive and Negative Effects of Tourism Essay4924 Words   |  20 PagesThe Negative and Positive Effects of Tourism Submitted by Arianne Smith DeVry University Tourism Management, Warren John Fall 2011 Abstract The current research paper covers the main effects of global tourism, both positive and negative. International tourism is a significant sector of business. For some countries it is one of the main sources of national income. The most important positive economic effects of tourism are as follows: increase in budget revenues, production expansion, stimulationRead MoreWildlife Tourism : A Positive Or Negative Effect On Society2149 Words   |  9 PagesWildlife Tourism Introduction This portfolio will first of all be discussing the topic wildlife tourism, which can be enjoyable for tourists. They may enjoy purely watching wildlife whilst travelling to maybe learn some facts about wildlife (non-consumptive wildlife). Or, conversely, they may wish to be much more involved in some form of touching with the animals, or this even may involve the capturing or killing of animals (consumptive wildlife). Both of these will be critically examined below andRead MoreInternational Organisations And Development Of Tourism1359 Words   |  6 PagesThis essay will discuss whether international organisations have an important role to play in the planning and development of tourism. Using relevant examples of international organisations such as UNWTO and UNESCO, this essay will analyse how these types of organisations contribute towards the planning and development of tourism. By using Gran Canaria, Serbia, Bosnia, Croatia and the UK as case studies, the essay will produce a cl ear analogy of how international organisations get involved to helpRead MoreUnit 37: the Travel and Tourism Sector892 Words   |  4 PagesUNIT 37: THE TRAVEL AND TOURISM SECTOR Get assignment help for this unit at assignmenthelpuk@yahoo.com LO1 Understand the history and structure of the travel and tourism sector History: pilgrimages, the grand tours, post industrial revolution, post war, current; factors facilitating growth eg technology, time, money, freedom of movement, infrastructure, social conditions; possible future developments eg sustainability Travel and tourism sector: travel services; tourism services; conferences andRead MoreTourisms Effects On The Positive Effects Of Tourism Development1276 Words   |  6 PagesThe second effect is sociocultural. According to Dogan (1989), tourism development has a great effect on the socio-cultural characteristics of residents like habits, daily routines, social lives and beliefs, and values. They may lead to psychological tension. Firstly, there are many positives from tourism development. Brunt and Courtney (1999) mentioned that tourism can result in improved community services, additional park, recreation and cultural facilities and encouragement of cultural activities

Immigrants and Crime Essay Example For Students

Immigrants and Crime: Essay Out of the Melting Pot and into the FireEnglish 102.5Research Project1 Crime is inherent in our nature. When Eve took the bite of the apple it was the first sin, but whether in legend, religion or history, all evidence leads to the same thing: as long as there are laws or rules of any kind, there will be people to break them. As the saying goes, rules are meant to be broken. Crime has no limits whether in time or space, race or culture. It is the ultimate given in the theorem that is the human nature. Crime in the U. S. especially has always thrived because this continent was the dumping ground for the misfits of Europe. But, because the U.S. was not a penal colony, like Australia, there was no one to really keep this place in check. Criminals ran from Europe to hide in the wilderness of the new land. As it goes, this country was based on immigrants and on the most part still consists of them. They come from all over and with them bring their culture, their ideals, their food, their language and their criminals. This is not to say that America does not have its own, or that every immigrant is a criminal, but like all people immigrants have their share of bad seeds. The focus of my research is the tendency of male immigrants to turn to crime. Male, because until recently, female roles in the grand scene of the crime underworld were purely marginal. Women were always part of international intrigue, espionage and sabotage, but that is a more international and more political scene, where as the world I am about to describe is one of fiscal purposes. The crime world of this nature varies from the small scale insurance scams that someone might pull while fighting for compensation for a fake injury in a car accident, to the grand scale of organized crime which covers some organizations that could create their2own armies and in a sense already have. I am going to focus on this century because there is a sufficient amount of studies and documentation on the different subjects that I will cover. Also the time span is a large enough one to show any recurring trends and patterns. This century is also more analyzed, graphed, and categorized than any of the centuries before so it is easier to obtain the necessary research without having to do the fieldwork from scratch. Of course not all race groups will be represented since this is not supposed to be a book and only a few examples are needed to see the patterns. In this research project I have set out to show that in this century, male immigrants into the United States go into crime not only for monetary reasons and their socioeconomic status in the society, but also because of the culture they bring with them from their homeland and their stagnant state of existence among the closed ethnic communities.Immigrant CommunitiesTo understand all this let us first take a look at the immigrant communities. We have all seen them on television and heard about them in music and movies. Little Italy, Brighton Beach, Mexican Barrios, Spanish Harlem are all examples of this. And how can any town survive without a Chinatown. When immigrants come, they bring their culture and language with them and of course their food. This is a natural effect of migration. When one has to let go of everything he or she knows to move to another country, and the friends and family are gone, the air smells different, the food tastes different, the land looks different, and the people think differently, it is the basic instinct of human beings to cluster together and grab on to something familiar, i.e. their fellow expatriates. People from the same country tend to pick a part of town to live in and many of them stick around for generations. .ub089544d8e8d2fbd98ac52f2d044e0ff , .ub089544d8e8d2fbd98ac52f2d044e0ff .postImageUrl , .ub089544d8e8d2fbd98ac52f2d044e0ff .centered-text-area { min-height: 80px; position: relative; } .ub089544d8e8d2fbd98ac52f2d044e0ff , .ub089544d8e8d2fbd98ac52f2d044e0ff:hover , .ub089544d8e8d2fbd98ac52f2d044e0ff:visited , .ub089544d8e8d2fbd98ac52f2d044e0ff:active { border:0!important; } .ub089544d8e8d2fbd98ac52f2d044e0ff .clearfix:after { content: ""; display: table; clear: both; } .ub089544d8e8d2fbd98ac52f2d044e0ff { display: block; transition: background-color 250ms; webkit-transition: background-color 250ms; width: 100%; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #95A5A6; } .ub089544d8e8d2fbd98ac52f2d044e0ff:active , .ub089544d8e8d2fbd98ac52f2d044e0ff:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #2C3E50; } .ub089544d8e8d2fbd98ac52f2d044e0ff .centered-text-area { width: 100%; position: relative ; } .ub089544d8e8d2fbd98ac52f2d044e0ff .ctaText { border-bottom: 0 solid #fff; color: #2980B9; font-size: 16px; font-weight: bold; margin: 0; padding: 0; text-decoration: underline; } .ub089544d8e8d2fbd98ac52f2d044e0ff .postTitle { color: #FFFFFF; font-size: 16px; font-weight: 600; margin: 0; padding: 0; width: 100%; } .ub089544d8e8d2fbd98ac52f2d044e0ff .ctaButton { background-color: #7F8C8D!important; color: #2980B9; border: none; border-radius: 3px; box-shadow: none; font-size: 14px; font-weight: bold; line-height: 26px; moz-border-radius: 3px; text-align: center; text-decoration: none; text-shadow: none; width: 80px; min-height: 80px; background: url(https://artscolumbia.org/wp-content/plugins/intelly-related-posts/assets/images/simple-arrow.png)no-repeat; position: absolute; right: 0; top: 0; } .ub089544d8e8d2fbd98ac52f2d044e0ff:hover .ctaButton { background-color: #34495E!important; } .ub089544d8e8d2fbd98ac52f2d044e0ff .centered-text { display: table; height: 80px; padding-left : 18px; top: 0; } .ub089544d8e8d2fbd98ac52f2d044e0ff .ub089544d8e8d2fbd98ac52f2d044e0ff-content { display: table-cell; margin: 0; padding: 0; padding-right: 108px; position: relative; vertical-align: middle; width: 100%; } .ub089544d8e8d2fbd98ac52f2d044e0ff:after { content: ""; display: block; clear: both; } READ: Ruth Bader Ginsberg Essay This is all a 3great effort to keep sane, but it tends to arrest the development of assimilation and acculturation. For instance, many people in the larger of these communities do not even speak English. Whereas for the older generations

Maupassants short story comparison

â€Å"Boule de Suif† is a short story by Guy Maupassant. Translated, â€Å"Boule de Suif† means ‘Ball of Fat’ and it is used in reference to the title characters’ physical characteristics. This short story is often considered to be one of Maupassant’s best works.Advertising We will write a custom essay sample on Maupassant’s short story comparison specifically for you for only $16.05 $11/page Learn More The short story was published as part of Maupassant’s â€Å"Les Soirà ©es de Medan† short story collection. â€Å"Boule de Suif† was published in 1880, the period after the French were defeated in the Franco-Prussian War. â€Å"Boule de Suif† is a story about the different classes of the French people at the time and Society’s hypocrisy. The story is about Elizabeth Rousette, a prostitute who has the nick name of Boule De Suif. According to the narrator, Rousette is  "Short and round, fat as a pig, with puffy fingers constricted at the joints, looking like rows of short sausages†¦ much sought after, owing to her fresh and pleasing appearance† (Maupassant 10). The story is about ten city residents who are fleeing from Le Havre. The group is made up of people from different classes including shop owners, factory owners, and nuns. The respected citizens of the city are not comfortable with the idea of travelling together with Boule de Suif the ‘lowly prostitute’. However, when the other travelers learn that Boule has packed food, they all warm up to her. The coach is then stopped in a German-occupied village where the top soldier refuses to let it go unless he receives sexual favors from Boule. Boule strongly refuses this arrangement but she finally agrees just to set her fellow travelers free. However, the rest of the travelers repay her by isolating her and refusing to share their food with her. Consequently, Boule de Suif is outraged by the hypocrisy of the citizens and she is overcome by emotions. Maupassant’s story features insightful character descriptions and a well laid out dialogue. In addition, the author exhibits great skill when describing scenes in his story. The most dominant themes in this story are hypocrisy, class conflict, appearances, and reality.Advertising Looking for essay on literature languages? Let's see if we can help you! Get your first paper with 15% OFF Learn More The story’s title character finds herself at the receiving end of hypocrisy and class-based judgment. The other passengers feel that Boule’s status does not warrant her the privilege of traveling with their kind. However, when they are in need of food and Boule is the only one who has some, their feelings towards her change. The narrator of this story remarks that Boule de Suif â€Å"felt at once indignant with her neighbors, and humiliated at having yielded to the Prussian int o whose arms they had so hypocritically cast her† (Maupassant 40). This happened after Boule had returned to the couch after giving in to the German Commander’s demands. This line marks the point at which the story turns around. Both Boule and the readers were expecting a different reaction from the rest of the travelers given that Boule had just granted them their wish. However, the author chooses to use this scene to highlight the collective hypocrisy of the society. All the other travelers represent different classes in the society and none of them expresses a different opinion. According to Maupassant, the society advocates for patriotism but ends up sacrificing the patriots. Boule had just given up her dignity for the sake of her countrymen but they repay her by isolating her. â€Å"Boule de Suif† bears similarities with other Maupassant’s literary works. Most of Maupassant’s works addressed the social and political issues in nineteenth century France. â€Å"The Necklace† is a short story by Guy Maupassant that tells the story of an ambitious woman who borrows a necklace from an affluent woman only to lose it. There are some striking similarities between â€Å"The Necklace† and â€Å"Boule de Suif†.Both â€Å"The Necklace† and â€Å"Boule de Suif† were published in the same period. Therefore, both stories were meant for the same audience and addressed social issues that happened within the same period. When one is reading both â€Å"Boule de Suif† and â€Å"The Necklace†, several recurring aspects of Maupassant’s literary style are noticeable. The most notable ‘Maupassant factor’ in both stories is the similarity of the stories’ themes. The theme of class conflict is highlighted in both stories.Advertising We will write a custom essay sample on Maupassant’s short story comparison specifically for you for only $16.05 $11/page Learn More Madam Loise belongs to the lower bourgeoisie. In the traditional French society, the lower bourgeoisie was better off than the laborers and tradesmen but it was below the ruling class. The author uses the same approach in â€Å"Boule de Suif† where Boule belongs to the lowest class, the merchants belong to the lower bourgeoisie, and the factory owners belong to the upper bourgeoisie. On the other hand, Carrà ©-Lamadon the Comte and Comtesse of Brà ©ville belong to the aristocratic or ruling class. When the travelers are in the coach, the issues of class keep coming up. The other similarity in style between the two stories is the heavy use of irony as a stylistic device. In both stories, the use of irony plays a major part in highlighting the main themes in the stories. Another similarity touches on the use of non-partisan third-person narrator. Both stories are told through the use of an omniscient narrator. The narrators in â€Å"The Necklaceâ₠¬  and â€Å"Boule de Suif† are able to see into the characters’ inner thoughts. Works Cited Maupassant, Guy. Boule de Suif, and other Stories, New York, NY: Harper, 1909. Print. This essay on Maupassant’s short story comparison was written and submitted by user Valentin Sweeney to help you with your own studies. You are free to use it for research and reference purposes in order to write your own paper; however, you must cite it accordingly. You can donate your paper here.

Every IB Biology Past Paper Available Free and Official

Every IB Biology Past Paper Available Free and Official SAT / ACT Prep Online Guides and Tips When you take the IB Biology SL or HL exam, you'll probably be stressed out no matter what. But having seen a past paper beforehand will be a huge advantage: you'll know the format of the test cold and be used to the length and style of the test. In this article, I will at least try to get you familiar with the exam format by exposing you to IB Biology past papers, both free and paid. I'll also share strategies on how best to use these IB Biology tests for your own exam prep. Where to Find Free Past Papers In the last few years, IBO has gotten tough on illegal uploads of past papers, with the result that many sources are no longer available. Unfortunately, IBO has yet to provide any free sample Biology papers (SL or HL) on its website (although we'll be sure to update this article if and when that does happen). Because of this, while you might find some results if you search around online for past IB Biology papers, it's difficult to know if they're real past papers (illegally uploaded) or unofficial (ones created from scratch by students for practice). You should be very wary of any unofficial IB Biology papers you find. I DO NOT recommend using them, as they may be very different from the actual IB Biology exam. Where to Find Paid Tests The Follet IB store sells digital versions of the IB Biology SL past papers and IB Biology HL past papers from November 2015 to November 2018. This is the only safe place to get IB Biology past papers to download. Each paper and each mark scheme cost $3, so one full exam (including paper 1, paper 2, paper 3, and the mark scheme) will cost you about $18. Buying all of the past papers and mark schemes from 2015 to 2018 is costly, so we recommend just purchasing the two most recent complete past papers (May and November 2017). These tests will be the most similar to what you'll be tested on, particularly since there was an IB Biology syllabus change as recently as 2016. Plus, for most students, two tests will be plenty of practice. 3 Tips to Use IB Biology Past Papers Effectively Each IB Biology practice test will take 3 hours for SL or 4.5 hours for HL, so it's crucial that you get the most out of each test (since you will probably not have time for very many of them). Here are critical strategies to keep in mind when you're taking the tests: #1: Take Papers 1 and 2 In One Sitting, if Possible IB Biology SL and IB Biology HL papers 1 and 2 are given back to back, forcing you to write for 2 hours for SL and 3 hours and 15 minutes for HL. You need to build up endurance, so you don't make careless mistakes when you are exhausted at the end of paper 2. By taking the IB Biology practice exam in one sitting, you build up important endurance for the real papers. If you don't have time in your schedule for a 2-hour or 3-hour 15-minute session, then splitting the papers up over a few days is fine. Just make sure you follow the next rule: #2: Keep Strict Timing on Each Paper With a Timer It is vital that you get used to the timing pressures on the IB Biology papers. Here is the time allotted for each paper: IB Biology SL IB Biology SL Paper 1- 45 minutes IB Biology SL Paper 2- 1 hour 15 minutes IB Biology SL Paper 3- 1 hour IB Biology HL IB Biology HL Paper 1- 1 hour IB Biology HL Paper 2- 2 hours 15 minutes IB Biology HL Paper 3- 1 hour 15 minutes In this time frame, you need to finish: IB Biology SL SL Paper 1: 30 multiple-choice questions SL Paper 2: 4 short responses and 1 essay question (you choose between 3 options) SL Paper 3: 6 short response questions that each can have between 2-5 parts IB Biology HL HL Paper 1: 40 multiple-choice questions HL Paper 2: 4 short response questions that each can have between 3-10 parts and 2 essay questions (you choose between 4 options) HL Paper 3: 7 or more short response and essay questions (varies based on the options that you covered in your class). Do not give yourself even two extra minutes during your practice- this can allow you to answer more questions and improve your IB exam score substantially. You want to use these practice tests as reliable indicators of your real IB Biology score, not as a way to falsely boost your sense of progress. #3: Review Your Answers From Your Practice Test At the end of every practice exam, make sure you review every mistake you made, and every question you were unsure of. If you skip this step in the process, you're not going to learn from your mistakes, and you'll continue making them on the next tests. You should spend at least 1.5 hours reviewing every full practice exam. This may feel like a lot of time, but emphasize quality of learning over quantity of learning. I'd rather see you take two exams with detailed review than five exams with no review. What’s Next? Learn more about IB Biology: The Complete IB Biology Syllabus: SL and HL The Best IB Biology Study Guide and Notes for SL and HL The Best IB Biology Books, Reviewed Learn more about the IB Program through our other articles: The Complete List of IB Course and Classes Which IB Courses Can I Take Online? Can I get an IB Diploma Online? Want to improve your SAT score by 160 points or your ACT score by 4 points? We've written a guide for each test about the top 5 strategies you must be using to have a shot at improving your score. Download it for free now:

Biography of Cy Twombly, Romantic Symbolist Artist

Biography of Cy Twombly, Romantic Symbolist Artist Cy Twombly (born Edwin Parker Cy Twombly, Jr.; April 25, 1928–July 5, 2011) was an American artist known for works featuring scribbled, sometimes graffiti-like paintings. He was often inspired by classical myths and poetry. His style is called romantic symbolism for its interpretation of classical material in shapes and words or wordless calligraphy. Twombly also created sculptures during much of his career. Fast Facts: Cy Twombly Occupation: ArtistKnown For: Romantic symbolist paintings and characteristic scribblesBorn: April 25, 1928 in Lexington, VirginiaDied: July 5, 2011 in Rome, ItalyEducation: School of the Museum of Fine Arts, Black Mountain CollegeSelected Works: Academy (1955), Nine Discourses on Commodus (1963), Untitled (New York) (1970)Notable Quote: I swear if I had to do this over again, I would just do the paintings and never show them. Early Life and Education Cy Twombly grew up in Lexington, Virginia. He was the son of a professional baseball player, Cy Twombly, Sr., who had a short major league career pitching for the Chicago White Sox. Both men were nicknamed Cy after legendary pitcher Cy Young. As a child, Cy Twombly practiced art with kits that his family ordered from the Sears Roebuck catalog. He began taking art lessons at age 12. His instructor was painter Pierre Daura, a Catalan artist who fled Spain during the Spanish Civil War of the 1930s. After high school, Twombly studied at the School of the Museum of Fine Arts in Boston and Washington and Lee University. In 1950, he began studying at the Art Students League of New York, where he met fellow artist Robert Rauschenberg. The two men became lifelong friends. With Rauschenbergs encouragement, Twombly spent much of 1951 and 1952 studying at the now-defunct Black Mountain College in North Carolina with artists like Franz Kline, Robert Motherwell, and Ben Shahn. Klines black-and-white abstract expressionist paintings, in particular, heavily influenced Twomblys early work. Twomblys first solo exhibition took place at the Samuel M. Kootz Gallery in New York in 1951. Military Influence and Early Success With a grant from the Virginia Museum of Fine Arts, Cy Twombly traveled to Africa and Europe in 1952. Robert Rauschenberg accompanied him. When Twombly returned to the U.S. in 1953, Twombly and Rauschenberg presented a two-person show in New York City that was so scandalous, the visitor comments book was removed to avoid the negative and hostile responses to the show. In 1953 and 1954, Cy Twombly served in the U.S. Army as a cryptologist deciphering coded communication. While on weekend leaves, he experimented with the Surrealist art technique of automatic drawing, and he adapted it to create a methodology for drawing in the dark. The result was abstract forms and curves that emerged as key elements of later paintings. Cy Twombly Academy (1955) at Museum of Modern Art, New York City, USA. Robert Alexander / Getty Images From 1955 through 1959, Twombly emerged as a prominent New York artist associating with both Robert Rauschenberg and Jasper Johns. During this period, his scribbled pieces on white canvas gradually evolved. His work became simpler in form and monochromatic in tone. By the late 1950s, his pieces appeared on dark canvas with what looked like white lines scratched into the surface. Romantic Symbolism and Blackboard Paintings In 1957, on a trip to Rome, Cy Twombly met Italian artist Baroness Tatiana Franchetti. They married in New York City in 1959 and soon moved to Italy. Twombly spent part of the year in Italy and part in the U.S. for the rest of his life. After moving to Europe, classical Roman myths began to heavily influence Twomblys art. In the 1960s, he frequently used classical mythology as source material. He created cycles based on myths like Leda and the Swan and The Birth of Venus. His work was dubbed romantic symbolism, as the paintings were not directly representational but rather were meant to symbolize the classical, romantic content. In the late 1960s and early 1970s, Twombly created what are often called the Blackboard Paintings: scrawled white writing on a dark surface that resembles a chalkboard. The writing does not form words. In the studio, Twombly reportedly sat on the shoulders of a friend and moved back and forth along the canvas to create his curving lines. Cy Twomblys Untitled (New York City) at Christies auction. Peter Mcdiarmid / Getty Images In 1963, after the assassination of U.S. President John F. Kennedy, Twombly created a series of paintings informed by the life of the assassinated Roman emperor Commodus, son of Marcus Aurelius. He titled it Nine Discourses on Commodus. The paintings include violent splatters of color against the background of grey canvases. When exhibited in New York in 1964, American critics reviews were largely negative. However, the Commodus series is now seen as one of Twomblys most significant achievements. Sculpture Cy Twombly created sculpture from found objects throughout the 1950s, but he stopped producing three-dimensional work in 1959 and did not begin again until the mid-1970s. Twombly returned to found and discarded objects, but just like his paintings, his sculptures were newly influenced by classical myths and literature. Most of Twomblys sculptures are painted white- in fact, he once said, White paint is my marble. Cy Twombly sculptures and paintings at the Broad Museum in Los Angeles, California, USA. Santi Visalli / Getty Images Twomblys sculpted works were not well-known to the public for most of his career. An exhibition of selected sculpted pieces from throughout his career was shown at the Museum of Modern Art in New York City in 2011, the year of Twomblys death. Since they are constructed mostly of found objects, many observers see his sculpture as a three-dimensional record of the artists life. Later Works and Legacy Late in his career, Cy Twombly added more bright color to his work, and on occasion his pieces were representational, such as his massive late-career paintings of roses and peonies. Classical Japanese art influenced these works; some are even inscribed with Japanese haiku poetry. Untitled (Roses), Cy Twombly (2008) at the Broadhurst Museum in Munich. Miguel Villagran / Getty Images One of Twomblys final works was the painting of the ceiling of a sculpture gallery at the Louvre museum in Paris, France. He died of cancer on July 5, 2011, in Rome, Italy. Twombly avoided the trappings of celebrity for most of his career. He chose to let his painting and sculpture speak for themselves. The Milwaukee Art Museum presented the first Twombly retrospective in 1968. Later major exhibitions included a 1979 retrospective at the Whitney Museum of American Art and the Museum of Modern Arts 1994 retrospective in New York City. Many see Twomblys work as a significant influence on important contemporary artists. Echoes of his approach to symbolism are seen in the work of Italian artist Francesco Clemente. Twomblys paintings also presaged the large-scale paintings by Julian Schnabel and the use of scribbling in the work of Jean-Michel Basquiat. Sources Rivkin, Joshua. Chalk: The Art and Erasure of Cy Twombly. Melville House, 2018.Storsve, Jonas. Cy Twombly. Sieveking, 2017.

Recommendation report Essay Example | Topics and Well Written Essays - 750 words - 1

Recommendation report - Essay Example Another important concept is that of saving and maintaining face. Losing face has negative consequences one’s reputation. To avoid losing face, Singaporeans publicly control their behavior and emotions. They do not criticize others openly and do use plenty of non-verbal communication. Sometimes, it is just as important to save the face of others one’s own group among Singaporeans. Nevertheless, being aware of such idiosyncrasies will keep you abreast of those without this knowledge. Singaporeans often rely upon facial expression, tone of voice, and posture to communicate feelings (Warnstam, 2007). They tend to communicate subtly or implicitly. For example, instead of saying â€Å"no,† they may just say, â€Å"I will try.† Silence also communicates. For example, a pause before response to a question means the respondent has given appropriate thought to his or her response. Furthermore, intense eye contact with a senior person is a sign of disrespect. These are just some of the more important cultural realities to keep in mind while doing business in Singapore. Most of these will help make doing business less confusing for both you and your counterparts. Personal relationships are the cornerstone of business relationships in Singapore (Kwintessential, 2004). Once recognized as part of a group, you will be accepted and expected to obey group standards.   Nevertheless, relationships take time. Be patient to demonstrate Nothing Ventured is there for long-term gains. Make appointments at least two weeks in advance when possible. Arrive at meetings on time. Punctuality is a virtue. Make small talk before business discussions, and make presentations complete with charts, figures, and resources. These things show Singaporeans you are committed to the business relationships you are building and that you are not fly-by-night. Business cards hold specific behavior mores. Business cards are

Story of an hour, Lady with the pet dog Essay Example | Topics and Well Written Essays - 500 words

Story of an hour, Lady with the pet dog - Essay Example I feel that Chopin does a very effective job with using descriptive words and putting the reader in the scene with the characters. She also allows the reader to see Mrs. Mallard’s emotions very well. At first she is sad and nearly sobbing and compares her to â€Å"as a child who has cried itself to sleep continues to sob in its dreams.† The reader then sees that she is dumbfounded and unable to think. Then after looking out the window at the sky she begins to feel free. As a reader, it was interesting to see her emotions very clearly and speculate how she really views her husband and their marriage. Perhaps in this story the author is conveying how she views marriage in general, or at least certain marriages. Chopin may view herself as someone who feels more free on her own and not â€Å"tied down† with what she sees as the burdens of marriage. It would be interesting to read more of her stories and find out if this is a theme that comes up often in her writing. The ending of the story is particularly interesting. Mrs. Mallard is obviously very shocked that her husband is still alive. Perhaps it was just plain shock that killed her or the fact that she felt shocked and then trapped and stressed out again.

Issues and Traditions of Judaism, Christianity, and Islam Essay Example for Free

Issues and Traditions of Judaism, Christianity, and Islam Essay Religion takes on many different forms and there are several definitions in as many languages used to describe the practices. For the purposes of this paper, the following basic definition will be used. Religion is the belief in and reverence for a supernatural power or powers regarded as creator and governor of the universe. Also, a personal or institutionalized system grounded in such belief and worship (Company, 2000). This paper will examine three major religions of today: Judaism, Christianity, and Islam. An attempt will be made to identify the top two current issues each religion faces as well as look at two sacred traditions and study the significance and major characteristics of each. Judaism Judaism is monotheistic in nature and has been described as a religion, a race, a culture, and a nation. All of these descriptions have some validity to them but Judaism is best described by some as an extended family (Rich, 2006). This extended family consists of four movements Reform, Conservative, Orthodox, and Reconstructionist. All of which, still find themselves victims of discrimination known as anti-Semitism which is based on stereotypes and myths and often invokes the belief that Jews have extraordinary influence with which they conspire to harm or control society. For those Jews living in the Middle East there is also the very real danger and threats from a powerful country possibly in possession of nuclear weapons. The president of Iran threatened them publicly with annihilation. Discrimination and threats of violence Jews are a very real part of Jewish life but there are just as many positive popular time honored traditions that exists still today. One of which is the wedding tradition. The tradition begins with the husband signing a Ketabuh, the groom’s marital contractual obligation to the bride. The groom is then led to the Chuppah, a tarp this symbolizes their future home together. The bride is led in with singing and dances and then she circles the groom seven and comes to stand to the right of him. After several additional steps the marriage is blessed and ends in a wedding feast. Another Jewish tradition performed prior to Yom Kippur is called the ceremony of kapparot. The practice was first discussed at the beginning of the ninth century. It was believed that the sins of an individual could be transferred to a fowl, a rooster for men and a hen for women. The fowl was to be held over the head and swung in a circle three times while the following was spoken: This is my exchange, my substitute, my atonement; this rooster (or hen) shall go to its death, but I shall go to a good, long life, and to peace. (Schwartz, 2009) The fowl was then donated to the poor and hoped to take on any misfortune that might have occurred to the one who took part in the ritual. The primary sacred text used by the Jews is the Torah. Christianity is currently noted to be the largest religion in the world today, with around two billion followers. Christian beliefs center on the life, death, burial, and resurrection of Jesus Christ as the son of God. Jesus’ teachings focused on the kingdom of God, love of God, and love of one another. Today there are many different views his teachings and the meaning of some forms of love. One of the most controversial topics in the faith today is that of practicing homosexuality. The Christian bible stems from the Jewish sacred text which banned homosexuality of any kind. The bible even talks of God destroying two cities over homosexual behavior (Clark, 2009). Today many leaders condone the behavior and some are even practicing it themselves. While homosexuality may serve as a religious divider here in the U. S. , persecution is served cold as a divisionary disabling tactic abroad. It is the number one issue facing many Christians today, outright discrimination as in the case with Jews as mentioned earlier. In countries such as Iraq, Afghanistan, China, Saudi Arabia, and others Christians are being martyred because of their refusal to denounce Christianity. Everyday there are approximately 465 people killed because they will not give up their faith in Jesus (Dearmore, 2009). Most Christians in the U. S. attend a church service of some kind one to three times a week. This is a time honored tradition, just as the wedding tradition is in Judaism. The reason behind this is to participate in a time of fellowship with one another. Normally, the tradition includes worship service, private and corporate prayer, the study and reading of scriptures, and collection of tithes and offerings. There is also the coming together for celebration of special holidays. The most important Christian holiday is Easter, the celebration of the resurrection of Christ and Christmas the celebration of his birth. Christian practices differ by denomination. Easter is a central theme for most if not all denominations. The origin of the word â€Å"Easter† is not certain but it was probably derived from Estre, an Anglo-Saxon goddess of spring (Dreamweaver, 2009). It is a celebration of the central event of the Christian faith, the belief that Jesus rose from the dead on the third day following his death and burial. It is the oldest Christian holiday and the most important day of the church year. There is evidence that the resurrection used to be celebrated every Sunday until some point in the first two centuries when it was agreed to move it to once a year. The sacred text of Christianity is the Bible. Islam The Islamic religion is monotheistic in nature; they follow one God named Allah. The primary meaning of Islam is peace and the prime message is the Unity of God. Islam identifies Jesus and John the Baptist as prophets. They also believe that there will be no other prophet after the prophet Muhammad. One of the primary concerns facing the Muslim community still today is retribution after the terrorists’ attacks of 11 Sept 2001. Many Islamic followers faced discrimination on all fronts because of the fear of their culture and religious stereotyping (Clark, 2009). The attacks on American soil left a scary imprint of terror in the minds and hearts of many. The media portrayal added fuel to the fire and did nothing to ease the tensions caused by the scary pictures of death left behind. Unfortunately, there is also the fight with fundamentalist ideology and division among their own religious sects. Some groups are teaching others to hate Jews, Christians, and Americans as well as others. In the midst of this hate is a tradition of peace and goodwill towards others. One of the most important traditions is the observance of the Five Pillars of Islam. This involves witnessing to the fact that there is none worthy of worship except Allah. The second pillar is Salat, facing toward Mecca, the Holy Land of Muhammad, five times a day and kneeling in prayer. The third pillar is Alms giving, which encompasses giving charitably to other Muslims. The fourth is the performance of a pilgrimage to Mecca at least once in their lifetime. Last is to observe fasting during Ramadan. Muslims normally worship in Mosque; they kneel prostrate on small prayer rugs. The rugs may look to be small oriental carpets. Muslims kneel as a sign of humility before God. There is only one requirement that the place of prayer be clean. The rug is approximately one meter in length just long enough for an adult to fit on comfortably. When prayer time comes the rug is placed on the ground with the top pointed in the direction of Mecca, Saudi Arabia. After prayer the rug is immediately folded and put away until next time. The Arabic word for a prayer rug is sajada, which comes from the same root word (SJD) as masjed (mosque) and sujud (prostration) (Huda, What are prayer rugs, and how are they used by Muslims? ). This paper discussed three major religions of today and two current issues that they face. It also examined the characteristics of some of their valued traditions. Judaism, Christianity, and Islam all have one central theme in common besides the discrimination they all endure; they are all monotheistic in nature. They all believe in their own sacred text, their own version of truth. References http://islam.about.com/od/prayer/f/prayer_rugs.htm http://www.jewfaq.org/judaism.htm http://www.jewishvirtuallibrary.org/jsource/Judaism/kapparot.html

Comparison of the Two Speeches in Julius Caesar -- comparison compare

Comparison of the Two Speeches in Julius Caesar    In William Shakespeare's play The Tragedy of Julius Caesar, two speeches are given to the people of Rome about Caesar's death. In Act 3, Scene 2 of this play Brutus and Antony both try to sway the minds of the Romans toward their views. Brutus tried to make the people believe he killed Caesar for a noble cause. Antony tried to persuade the people that the conspirators committed an act of brutality toward Caesar and were traitors. The effectiveness and ineffectiveness of both Antony's and Brutus's speech to the people are conveyed through tone and rhetorical devices. Brutus made his speech effective in persuading the people by using tone and rhetorical devices. Brutus was compassionate when referring to how he loved Caesar as much as Caesar`s friends of his speech. Brutus was showing compassion on lines18 - 20 when he said, "If there be any in this assembly, any dear friend of Caesar's, to him I say that Brutus's love to Caesar was no less than his." Brutus said this to help the people understand the sorrow he felt for the loss of Caesar, but he felt he killed Caesar for the good of Rome. Brutus anticipated an objection by the people when he said he loved Caesar , so he went on to say on lines 20 - 23, "If then that friend demand why Brutus rose against Caesar, this is my answer: Not that I love Caesar less, but Rome more."Brutus manipulated the people with rhetorical questions. He asks them on lines 29 - 33, " who is so base, that they would be a bondman, who is so rude, that they would not be a Roman, and who is so vile, that will n ot love his country," the people do not want to be against their country nor do they want to be so base to be a slave.... ...ns. This made Antony's speech more effective in the fact that he used detailed reasoning for why Caesar was not ambitious. This was why the people came to his favor in the end. The tones and rhetorical devices they used helped to capture their audience by appealing to their emotions and helping to move the views of Antony and Brutus's views across to their listeners. Comparing effectiveness and ineffectiveness of both speeches was important in determining which way the people would be swayed. Works Cited Bloom, Harold. William Shakespeare's Julius Caesar. Chelsea House Publisher; Connecticut, New York, & Pennsylvania. 1988, Pg. #33 - 36 Durband, Alan. Shakespeare Made Easy: Julius Caesar. Barron's Educational Series, Inc.; New York. 1985. Shakespeare, William. Julius Caesar. Ed. Alan Durband. London: Hutchinson & Co. Publishers Ltd., 1984.

Leadership Strategy of Prophet Muhammad (pbuh) Essay

Choose are leader you are interested in and analyse why you consider him/her to be a leader? Describe his or her key strengths and weaknesses as a leader. What makes you consider that person as an effective leader? Justify your answers in relation to the theories & practices we have examined in the course. Leadership is a crucial important topic that is deeply studied over time till today because it has a major effect in all the systems surrounding us affecting the individuals through political, businesses, humanitarian and to be named depending on the content of leadership nature. The term leadership can be defined as influential relationship between leaders and followers who intend real changes and outcomes that reflect their shared purposes towards a desirable future (Daft 2011). The great leader of all time influential on individuals does not disappear even after these leaders has been deceased. This is because such leaders not only possesses required leadership characteristic such as charisma, courage, passion, ethical and emotional attachment to its people which will further be discussed in the following essay in relation to the chosen leader but also what they have done for their followers and society as an whole for their better future. The perfect leader till date who has not been able to replace not even partially was the Prophet Muhammad, Peace be upon him (pbuh) who was a universal leader not just for the people of Muslims but towards every man-kinds on a global scale. He is not just a spiritual leader but also recognized as a leader for his political movement, a philosopher, a family man and also a business man. His teachings and actions were as per the guideline from the holy book of Islam â€Å"The Quran† – the word of god known as Allah (Gullen 2006). This essay will further discussed in details about Prophet Muhammad (pbuh) leadership style in relation to the current established theoretical frameworks on leadership and the reason why he is  still well-known for his accomplishment towards his missions not in just spreading the message of Islam, but also creating the equality and justice which is also a part of the message during the dark age in Arabia where the powerful crashed the weak, women dignity was misused and bloodshed was considered as a virtue (Gullen 2006).

Electronic Communications Essay

As time goes by, the world is changing rapidly; so are its people and the technology itself. Technology brings about a lot of amendments in people’s life. It is getting more advanced from day to day especially when it comes to Information Technology or in this case; electronic communications. Back then, mailing was seemingly to be one of the most vital ways of communication especially for the world communication. In contrast, nowadays people are more prone to communicate the easier ways; by staring on their electronic accounts on their computers or through their iPods and sending short messages from their iPhones or Blackberries. Why is it so? In my slight opinion, this growing trend gives a lot of dominances in today’s life, which are helping people to save their time and money, create borderless communication and make it easy for people to gain prominent information. First and foremost, the world today is turning more to electronic communications like e-mail, Facebook and Short Message System (SMS) and other electronic communications is because they will prevent people from wasting their time and money. How do these work? As we all know, sending a letter to someone will take a lot of processes and will eventually take a long time and waste a lot of money. On the contrary, electronic communications entail only the tip of our fingers so as an electronic device to work with. Then, what is left for us to do is just, typing! Has that not taken a much lesser time and money? For instance, an e-mail only requires us to turn on our laptops, open our accounts on the website and then, you can start write your letter and send them through e-mails. In short, with the very unstable economy nowadays, having these kinds of communications will ease everyone’s burden especially on their daily expenses and also their valuable time will not be wasted. Secondly, the growing trend of electronic communications is making it possible for a borderless communication which is vital these days. Why is it vital? A lot of things require borderless communication; in education field, businesses and even daily activities, especially when foreigners involved. For example, when trading with foreigners, in order to communicate with each other, they need Skype or Yahoo Messenger as mediums to interact and be able to do the trade at a faster rate as compared to by using ‘snail mails’ or regular letters. Skype is the perfect example of an electronic communication which will cut he boundary that has separated each country and make communication between two different countries from around the world possible. In conclusion, it is crucial to have these electronic communications in today’s age of globalization as they make it easier for people around the world to connect with each other. Last but not least, the dominance of these electronic communications is people could gain prominent information more efficiently than before. As there are lesser borders between countries, the efficiency of getting much more relevant and prominent information is higher. People will have the ability to provide and gain information effectively through Facebook or Twitter accounts. For example, international artists who have planned to do a world concert can inform their fans about it through their Facebook account. Likewise, the fans also can ask just about anything to their favourite artists regarding the concert. Hence, this explains why people make these electronic communications as a huge trend these days and in order to keep the trend ongoing, each person has the responsibility to adapt with the technology itself. In a nutshell, the growing trend of using electronic communications is inevitably vital in people’s lives as it gives out a lot of benefits as stated in above paragraphs. So, to avoid ourselves from not getting the chance of keeping up with the changing trends, we have to try our best to adapt ourselves with the rapid changes. I believe that the electronic communication trend is a trend which is very important to be followed as the world is getting more advanced day to day.

Discipline in High School Class

Discipline in High School Class Free Online Research Papers Subject: Discipline Topic: Use some ideas from Kounin or Skinner to solve a classroom problem One of my classes is made up for the most part of good students. The class is not large, although the room is tiny and crowded. Some of the students are excellent, always having the answers ready. Others listen for the most part, and learn. Two students, who we will call Amit and Gal, are different. They don’t seem to take the class seriously, and like to laugh and joke, even when nothing is funny. Amit doesn’t always pay attention, but when his behavior in class is commented on by the teacher, he always makes a big argument and defends himself. â€Å"Why me? I’m not the only one talking. And anyway, I wasn’t disturbing the class. I work hard to assimilate the material, see how my grades have come up since the beginning of the year. Why do you pick on me? I wasn’t fooling around at all. â€Å" He never admits anything. You would think he was being interrogated by the police and was afraid to admit even one thing, because it will be held against hi m What advice can Skinner and Kounin give me? How can I control this student’s behavior, or get him to control himself? I think I would try Skinner’s successive approximations and positive reinforcement. If Amit doesn’t disturb for a half an hour, make a positive comment even if he doesn’t listen. When he listens attentively make another positive comment. (These students are too old for stickers or Smileys). After a few days of this, discuss with him his improvement but insist in the future on no disturbances and also attentiveness. I would also try and keep up the Kounin student accountability pressure on Amit by peppering him with questions more frequently than other students. I would do this even though he will resent it. Gal’s problem is very similar. I once told of a humorous comment of the Ibn Ezra, at which Gal laughed uproariously. Gal constantly refers to this comment and laughs, even though it’s not that funny the tenth repetition. He also talks in class much too much, and is called to task frequently. I and using Kounin’s student accountability, but that has only limited effectiveness. I think I should try a schedule of reinforcement if Gal does not disturb, and note and praise his positive (or really non-negative) classroom behavior. Research Papers on Discipline in High School ClassStandardized TestingTrailblazing by Eric AndersonHip-Hop is ArtUnreasonable Searches and SeizuresThe Relationship Between Delinquency and Drug UseBook Review on The Autobiography of Malcolm XPersonal Experience with Teen PregnancyWhere Wild and West MeetQuebec and CanadaMarketing of Lifeboy Soap A Unilever Product

Science Projects for Every Subject

Science Projects for Every Subject How many times have you seen a science demonstration or watched a cool video and wished you could do something similar? While having a science lab certainly expands the type of projects you can do, there are many entertaining and fascinating projects you can do using everyday materials found in your own home or classroom. The projects listed here are grouped according to subject, so no matter what youre interested in, youll find an exciting activity. Youll find projects for every age and skill level, generally intended for the home or a basic school lab. To understand the basics of chemical reactions, start with the classic baking soda volcano or get a little more advanced and make your own hydrogen gas. Next,  learn the basics of crystallography with our collection of crystal-related experiments.   For younger students, our bubble-related experiments are simple, safe, and lots of fun. But if youre looking to turn up the heat, explore our collection of fire and smoke experiments.   Because everyone knows science is more fun when you can eat it, try some of our chemistry experiments involving food. And finally, our  weather-related experiments  are perfect for amateur meteorologists any  time of the year.   Turn a Science Project Into a Science Experiment While science projects may be done simply because they are fun and raise interest in a subject, you can use them as the basis for experiments. An experiment is a part of the scientific method. The scientific method, in turn, is a step-by-step process used to ask and answer questions about the natural world. To apply the scientific method, follow these steps: Make observations: Whether youre aware of it or not, you always know something about a subject before you perform a project or experiment with it. Sometimes observations take the form of background research. Sometimes they are qualities of a subject you notice. Its a good idea to keep a notebook to record your experiences before a project. Make notes of anything of interest to you.Propose a hypothesis: Think of a hypothesis in the form of cause and effect. If you take an action, what do you think the effect will be? For the projects in this list, think what might happen if you change the amounts of ingredients or substitute one material for another.Design and perform an experiment: An experiment is a way to test a hypothesis. Example: Do all brands of paper towels pick up the same amount of water? An experiment might be to measure the amount of liquid picked up by different paper towels and see if its the same.Accept or reject the hypothesis: If your hypothesis was that all brands of paper towels are equal, yet your data indicates they picked up different volumes of water, you would reject the hypothesis. Rejecting a hypothesis doesnt mean the science was bad. On the contrary, you can tell more from a rejected hypothesis than an accepted one. Propose a new hypothesis: If you rejected your hypothesis, you can form a new one to test. In other cases, your initial experiment might raise other questions to explore. A Note About Lab Safety Whether you conduct projects in your kitchen or a formal laboratory, keep safety first and foremost in your mind. Always read the instructions and warning labels on chemicals, even common kitchen and cleaning products. In particular, note whether there are restrictions about which chemicals can be stored together and what hazards are associated with the ingredients. Note whether or not a product is toxic or poses a hazard if it is inhaled, ingested, or touches skin.Prepare for an accident before one happens. Know the location of the fire extinguisher and how to use it. Know what to do if you break glassware, accidentally injure yourself, or spill a chemical.Dress appropriately for science. Some projects in this list require no special protective gear. Others are best performed with safety googles, gloves, a lab coat (or old shirt), long pants, and covered shoes.Dont eat or drink around your projects. Many science projects involve materials you dont want to ingest. Also, if youre snacking, youre distracted. Keep your focus on your project.Dont play mad scientist. Young children may think chemistr y is about mixing together chemicals and seeing what happens or that biology involves testing the reactions of animals to different situations. This is not science. Good science is like good cooking. Start by following a protocol to the letter. Once you understand the basic principles, you can expand your experiment in new directions following the principles of the scientific method. A Final Word About Science Projects From each project, youll find links to explore many other science activities. Use these projects as a starting point to ignite interest in science and learn more about a subject. But, dont feel like you need written instructions to continue your exploration of science! You can apply the scientific method to ask and answer any question or explore solutions to any problem. When faced with a question, ask yourself if you can predict an answer and test whether or not it is valid. When you have a problem, use science to logically explore the cause and effect of any action you might take. Before you know it, youll be a scientist.

The implications of downsizing (rightsizing) to the employees, Research Paper

The implications of downsizing (rightsizing) to the employees, communities, and families of the employees - Research Paper Example Downsizing can have many implications on employees, their families as well as the communities in which rightsizing organizations operate. The impacts on employees may include loss of morale, financial loss and emotional and psychological stress among other effects. Similarly, their families are bound to suffer a reduction in standards of living and may also be subjected to psychological torture in the period that their bread winners remain jobless. Downsizing can also negatively impact on societies in which they operate. Through massive layoffs, the living standards in the societies decline and robbery may take lead in communities which are deficient of job opportunities. Irrespective of the motives, corporate downsizing may yield considerable consequences on the superficial corporate social responsibility of any organization. This paper explores the implications of downsizing on employees, their families and communities. How Downsizing (Rightsizing) Affect Employees Downsizing is a practice that has become synonymous with contemporary organizations. The experience of working in an environment with high likelihood of redundancy and seeing co-employees leave an organization has become part and parcel of workers. Downsizing in organizations makes employees to feel anxious. It affects the morale and also threatens the welfare of employees in numerous ways. In most occasions, employees may perceive the organization as unfair and behaving in unwarranted manner. Besides affecting the morale of employees, downsizing also thwarts trust, employee commitment, loyalty and performance. According to Redman and Wilkinson (2001), downsizing causes â€Å"downsizing syndrome† on survivors. It also imposes psychological impacts on leaving employees. i. Downsizing Implications On The Morale Of Employees Employee morale is a crucial determinant of organizational performance. In the event of downsizing, both surviving employees and downsizing victims tend to exhibit low work morale. Downsizing creates adverse emotions among remaining workers who feel withdrawn from executing their organizational duties. Moreover, surviving employees usually feel irritated, grief, betrayal and are psychologically estranged from their organization. Despite the fact that employees usually struggle to perform better in order to retain their jobs after downsizing, their attempt is usually compelled and not out of free will. Surviving employees are always ready to try new approaches to task execution. With few employees increasing, work burden increases and so does the stress level for employees. Consequently, a downsizing organization may fail to realize it anticipated better performance because of deteriorating morale of employees. In some cases, downsizing might even lead to protest and rampant absenteeism among employees, who feel uncertain as to what might become of them in the near future. The loss of longtime workmates and close friends adversely affect both leaving a nd surviving employees. The idea of separation flattens the morale of remaining employees, which in turn lowers the performance level. It is quite obvious that employees are bound to loss morale in the event of downsizing. Therefore, organizations should be ethical enough to mitigate the impact of downsizing on employees by ensuring adequate

Case Study Essay Example | Topics and Well Written Essays - 1000 words - 27

Case Study - Essay Example There are several reasons as to why I would like to be a Hong Kong police officer. My reasons are based on the motivation practices that the Hong Kong police officers are given, and they include: The Hong Kong police officers are treated with respect and dignity and the same time their hard work appreciated. The Hong Kong police force offers motivational practices like awards and honors thus making the occupation interesting. I enjoy competition, thus they feel that the competition set in the Hong Kong police force is appealing. The Hong Kong police officers’ talents are developed, and their performance managed. It is, therefore, more professional compared to other regions of the world. The Hong Kong police are taken through a competitive training making it of quality as the police officers strive to excel. I am attracted to the Hong Kong police since it bases its course on the â€Å"excellent performance† (Traver 55). The system in Hong Kong is contrary to other places whereby the focus is made on the quantity as opposed to the quality of police officers. The Hong Kong police awarding system promote healthy competition among the recruits and the same time help in determining the best. The system shows that there is some order in the Hong Kong police system. The Hong Kong police force also does not focus on punishment, but rather the use of awards to motivate. The Hong Kong police force is, therefore, friendlier through the introduction of motivation tools instead of punishments. It also gives one an opportunity to further his or her studies thus more fare to academicians like me. There are several examples from the case study that a theory of motivation can be applied. Firstly, the police force awards the graduate with the highest scores with the â€Å"Commissioner of Police’s Certificate of Academic Merit† (Traver 55). Secondly, police force awards the â€Å"best all- round probationary inspector† with the ‘Batton of Honor’, a ‘Silver

A Study into the Relationship between the Government and Corporations Research Paper

A Study into the Relationship between the Government and Corporations - Research Paper Example The relationship of Government with Corporation used to be of lasses faire or socialist nature. However, today things have changed and the nature of relationship between Government and Corporation has evolved. According to (Alfredo,1999)â€Å"Today's relationship between government and business is thus neither laissez faire nor socialist, but rather a combination of both, essentially what is called a "mixed economy†. It is a fact that the businesses which deal with international business have to deal with two national governments. This procedure where business with two countries are involved, there can arise congruence of conflict between two governments. Here we can study the relationship dimensions of a corporation with that of a government in a brief manner. The Structure of government of America In order to understand the relationship of Government and Corporation, a brief look into the American governmental structure is essential. In the American Government , the executiv e position is held by the President of America and he also act as the head of the state and deal with diplomatic activities and hold the position of commander in chief branches of the armed forces. America also allows the vice president to hold the post in an Executive branch .Now it is the legislative branch which explains about the laws pertaining to the society and community of America. As per (Longley,2012) Every society needs laws. In the United States, the power to make laws is given to Congress, which represents the legislative branch of government. The laws of judicial branch of America are often confusing and vague and it is the federal judicial system which figure out what is constitution part of the law. Then there is the federalism which allows the sharing of power between different branches of the Government. Also it is the federal Government which is regulating the day to day functions of huge and small corporate in America. In Concise it can also be said that the pres ent day American Corporations are regulated by the Federal Reserve System of the country. The Federal Reserve is the body of American Government which governs and controls all financial matters of the country.As per (bare foot) â€Å"The Federal Reserve is at the root of most of our present statutory regulations, "laws", in the control and regulation of virtually all aspects of human activity in the United States†. Different types of corporations in U.S. In America there are different types of corporations that are registered under the state law and pose as a single entity with specific privilege and liabilities. In the website (Wise Geek, 2003) writes that, â€Å"In general sense, a corporation is a business entity that is given many of the same legal rights as an actual person†. The corporations can be classified into different forms according to their nature and business motive. This includes public and private corporations whose nature, motive and structure may be different and varied. Although most of the bodies are formulated for business motives, we can also find charitable organization, public bodies and clubs included in this category of corporations. Even though the corporations are impersonal entities, Government has imposed rights and responsibilities like person to these

Polyester: History, Development and Applications

Polyester: History, Development and Applications ABSTRACT:Â   Polyester is a synthetic fiber derived from coal, air, water, and petroleum. Polyester fibers are formed from a chemical reaction between an acid and alcohol, and is developed in a 20th-century laboratory. In the formation of polyester reaction, two or more molecules combine to make a large molecule whose structure repeats throughout its length. Polyester fibers can form very long molecules that are very stable and strong. Polyester has been considered to have several advantages over traditional fabrics such as cotton. One of its most important quality is that it does not absorb moisture, but does absorb oil; this quality makes polyester the perfect fabric for the application of water-, soil-, and fire-resistant finishes. Its another quality, that is, low absorbency also makes it naturally resistant to stains. Polyester is used in the manufacture of many products, including clothing, home furnishings, industrial fabrics, computer and recording tapes, and electrical insulation. As we go along further, we would see the various uses of polyester in all the several fields such as clothing, furnishing, etc. Fabrics woven from polyester thread or yarn are used extensively in apparel and home furnishings, from shirts and pants to jackets and hats, bed sheets, blankets and upholstered furniture. Industrial polyester fibers, yarns and ropes are used in tire reinforcements, fabrics for conveyor belts, safety belts, coated fabrics and plastic reinforcements with high-energy absorption. Polyester fiber is used as cushioning and insulating material in pillows, comforters and upholstery padding. We would discuss in detail the history of polyester, the method of manufacturing of polyester, its various uses, and its importance in our day to day life, how much we use polyester in our life without really noticing that it is polyester we are using. INTRODUCTION: In short we can say that polyester is a category of polymers which contain the ester functional group in their main chain. Even though there are many types of polyester, the term polyester as a specific material most commonly refers to polyethylene terephthalate (PET). Polyesters include naturally-occurring chemicals. Naturally occurring chemicals include that are found in nature and are not man-made such as in the cut in of plant cuticles. An example of synthetic fiber is synthetics through step-growth polymerization such as polycarbonate and polybutyrate. Generally natural polyesters and even a few synthetic ones are biodegradable, that is, they can break down or decay naturally without any special treatment, and can therefore be thrown away without causing pollution. Whereas on the other hand, most synthetic polyesters, which are more commonly used, are not biodegradable. Polyester is a term often defined as long-chain polymers chemically composed of at least 85% by weight of an ester and a dihydric alcohol and a terephthalic acid. In simpler terms, it means that polyester is the linking of several esters within the fibers. Reaction of alcohol with carboxylic acid results in the formation of esters. Polyester also refers to the various polymers in which the backbones are formed by the esterification condensation of polyfunctional alcohols and acids. Polyester can also be classified as saturated and unsaturated polyesters. Saturated polyesters refer to that family of polyesters in which the polyester backbones are saturated. They are thus not as reactive as unsaturated polyesters. The saturated polyesters consist of low molecular weight liquids used as plasticizers and as reactants in forming urethane polymers, and linear, high molecular weight thermoplastics such as polyethylene terephthalate (Dacron and Mylar). Usual reactants for the saturated polyesters are a glycol and an acid or anhydride. Unsaturated polyesters refer to that family of polyesters in which the backbone consists of alkyl thermosetting resins characterized by vinyl unsaturation. They are mostly used in reinforced plastics. These are the most widely used and economical family of resins. Characteristics of polyester Polyester fabrics and fibers are extremely strong and thus durable. Polyester is very durable: it is resistant to most chemicals, stretching and shrinking, wrinkle resistant, mildew and abrasion resistant. Polyester is hydrophobic in nature, that is, these molecules and quick drying. It can be used for insulation by manufacturing hollow fibers. Polyesters quality to retain its shape is good for making outdoor clothing for harsh climates. Polyester can be easily washed and dried, without the added tension of ironing and all because it does not form wrinkles. HISTORY OF POLYESTER: Polyester became famous for Scrunch it, pull it, and wash it without any wear and wrinkles. Polyester was the fabric of choice in an economy that was changing in terms of speed, efficiency and convenience. The textile industrys answer to food industry producing fries and coke was the production of Polyester quick, cheap and easy. Carothers Work It was W.H.Carothers who discovered that alcohols and carboxyl acids could be successfully mixed to create fibers. Carothers was working for DuPont at the time and unfortunately when he discovered Nylon, polyester took a back seat. PET Terylene The incomplete research of Carothers had not advanced to investigating the polyester formed from mixing ethylene glycol and terephthalic acid. Whinfield and Dickson 2 British scientists are the ones who patented PET or PETE in 1941. Polyethylene terephthalate (PET) forms the basis for synthetic fibers like Dacron, Terylene and polyester. Later that year, the first polyester fiber Terylene was created by Whinfield and Dickson along with Birtwhistle and Ritchiethey. Terylene was first manufactured by Imperial Chemical Industries or ICI. DuPonts Role It was in 1946 that DuPont bought all legal rights from ICI, that is, Imperial Chemical Industries. In 1950, the Dealware property of DuPont manufactured another polyester fiber, which they named Dacron. Mylar was introduced in 1952. Polyester was first introduced to the American public in 1951 as the magical fabric that needed no ironing! PET and PEN are DuPont trademarks that have turned the use and consumption of Polyester around. Polyester Becomes Popular Subsequent to the development of Terylene and Dacron, Kodel was developed by Eastman Chemical Products, Inc in 1958. The polyester market underwent rapid expansion and textile mills emerged everywhere. Many of the mills were located at small gas stations and produced cheap polyester apparel. The inexpensive and durable fiber became very popular and the industry expanded rapidly till the 1970s. Unfortunately, the infamous double-knit polyester image hit the industry and polyester soon came to be known as the uncomfortable fabric. The Phoenix Rises Today, polyester is largely regarded as a cheap fabric that is rather uncomfortable for sensitive human skin to wear. It is also not preferred because of its highly inflammable properties. However, the emergence of luxury fibers like polyester microfiber and various polyester blends, the polyester industry is once again on its way to a grand come back. The Tennessee Eastman Company and the Man-Made Fiber Producers Associations (MMFPA) Polyester Fashion Council played a significant role in the revival of polyester. The Tennessee Eastman Company started a YES campaign for polYESter and popularized it via radio and television. The main idea was to focus on the wash and go properties of polyester rather than sell it as a cheap fabric. Hoechst Fibers Industries also played a part in the history of polyester. They conducted various studies from 1981 to 1983 and found that 89% of people could not distinguish between polyester and other natural fibers like cotton, wool and silk. Also, it was found that people were more interested in the appearance of the apparel than the fabric it was made of. Today, the biggest contributor to the appeal of polyester is the discovery of microfibers. Microfibers give polyester the feel of silk and are rapidly becoming the choice of fabric. With an expensive tag to match, the cheap image of polyester seems to be on its way out. Heres to heralding a new era in the history of polyester! MANUFACTURING OF POLYESTER: Polyester Manufacturing Polyester fibers or the synthetic fibers are long chain polymers which are derived from coal, air, water, and petroleum. They are formed through chemical reaction between an acid and alcohol, which forms ester. In this reaction, two or more molecules combine to make a large molecule whose structure repeats throughout its length. These molecules are very stable and strong. There are variations in the compositions and therefore in the properties of polyester fibers. Types of Polyester PHYPERLINK http://www.teonline.com/fibers-yarns-threads/polyester-fiber.htmlolyester fibers are generally available in two varieties- PET (polyethylene terephthalate) and PCDT (poly-1, 4-cyclohexylene-dimethylene terephthalate). PET is the most common production of polyester. It is stronger than PCDT, while PCDT has more elasticity and resilience. Another advantage of PET is that it can be used alone or blended with other fabrics for making wrinkle free and stain resistant clothing that can retain its shape. PCDT is more suitable for heavier applications. These heavier applications include draperies and furniture coverings. Modifications can be introduced in each of these varieties for obtaining specific properties. Raw Materials Polyester is a chemical term which can be broken into poly, meaning many, and ester, a basic organic chemical compound. The principle ingredient used in the manufacture of polyester is ethylene, which is derived from petroleum. In this process, ethylene is the polymer, the chemical building block of polyester, and the chemical process that produces the finished polyester is called polymerization. PET Polyester For manufacturing PET Polyester, the main raw material is ethylene derived from petroleum. This ethylene is oxidized to produce a glycol monomer dihydric alcohol which is further combined with another monomer, terephthalic acid at a high temperature in a vacuum. Polymerization, the chemical process that produces the finished polyester, is done with the help of catalysts. Catalysts are used to speed up the rate of a reaction. Then a colorless molten polyester is formed which then flows from a slot in a vessel on to a casting wheel and takes shape of a ribbon as it cools to hardness. The polymer thus produced by this process is then cut into very small chips, dried to remove all moisture and blended to make it uniform for getting it ready for spinning into yarn. PCDT Polyester This variation of polyester is made by condensing terephthalic acid with 1, 4-cyclohexane-dimethanol to form poly-1, 4-cyclohexylene-dimethylene terephthalate or the PCDT Polyester. As for PET Polyester, PCDT is processed for melt spinning. Spinning Polymer chips are melted at 500-518ÂÂ °F (260-270ÂÂ °C) to form a syrup-like solution. The polymer, which is now in a molten form, is then extruded through a spinneret and the filaments are subsequently drawn into the desired polyester fiber. Variations are introduced to obtain desired end results. Spinnerets having hole of different shapes such as round, trilobal, pentalobal, hexalobal or octalobal can be used for special effects like opacity, luster or its suppression, wicking, comfort or feel. Hollow fibers may be produced to make it lightweight and for providing greater cushioning or insulative properties. Crepe effect can be obtained through crimps. Certain additives may also be combined with the spinning solutions for specific properties. Delusterant can be added to make the fiber dull, a flame retardant may be added or certain other antistatic substance may also be included. The product stream divides into two different application areas which are mainly textile applications and packaging applications, after the first stage of polymer production in the melt phase. In the table shown below, the main applications of textile and packaging polyester are listed. Textile Packaging Staple fiber (PSF) Bottles for CSD, Water, Beer, Juice, Detergents Filaments POY, DTY, FDY A-PET Film Technical yarn and tire cord Thermoforming Non-woven and spun bond BO-PET Biaxial oriented Film Mono-filament Strapping Abbreviations: PSF = Polyester Staple Fiber; POY = Partially Oriented Yarn; DTY = Draw Textured Yarn; FDY = Fully Drawn Yarn; CSD = Carbonated Soft Drink; A-PET = Amorphous Polyester Film; BO-PET = Biaxial Oriented Polyester Film; Drawing After extrusion from the spinneret, the fibers are drawn or elongated, with the help of godet wheels. The polyester fibers are usually drawn up to five times its original length, depending upon the desired properties. The filaments are drawn to a greater extent, for higher tenacity. When the fibers come in contact with the air, they solidify. Generally, the PET fibers are drawn hot as it produces more uniform fibers. PCDT fibers are drawn at higher temperature because of their higher melting point. During the drawing process itself, fibers may be textured which saves time, efforts and production cost and also gives greater quality control over the finished fibers. After the polyester yarn is drawn, it is wound on large bobbins or flat-wound packages, ready to be woven into material. Types of Polyester Yarns Polyester yarns have a wide range of diameters and staple lengths. The yarns are made basically as monofilament yarns, multifilament yarns and spun yarns. Filament Yarns PET Polyester is used to make filament yarns either in monofilament or multifilament forms. The direction and amount of twists are decided by the desired end use. The properties are also pre-determined. There are various types of such yarns. There is the bright, regular tenacity polyester yarn having light, stretch and sag resistance, used for sheer lightweight fabrics like tulle, voile and organdy. The regular tenacity semi dull yarn used for various apparels including lingerie. Its duller version is used for shirts and blouses. Polyester yarns resistant to various chemicals, and micro organisms are produced from high tenacity fibers for such industrial uses as conveyor belts, ropes and nets etc. Textured Yarns These yarns are made of PET multifilaments. Texturizing is either done along with the drawing process or afterwards during throwing or texturizing process. Spun Yarns Spun yarns are made of staple or cut PET or PCDT polyester fibers. The staple may be bright, semi dull or dull and tenacity may be regular, mid or high. It may be polished to reduce crimp and increase luster. It may either be spun alone or blended with other staple such as cotton, wool or rayon and then spun into yarn. Manufacturing Staple Fiber In making polyester staple fiber, polymerization, drying, and melt spinning are much the same as in the manufacture of filament yarn. However, in the melt spinning process, the spinneret has many more holes when the product is staple fiber. The rope-like bundles of polyester that emerge are called tow. Drawing tow * 1: Newly-formed tow is quickly cooled in cans that gather the thick fibers. Several lengths of tow are gathered and then drawn on heated rollers to three or four times their original length. Crimping * 2: Drawn tow is then fed into compression boxes, which force the fibers to fold like an accordion, at a rate of 9-15 crimps per inch (3-6 per cm). This process helps the fiber hold together during the later manufacturing stages. Setting *3: After the tow is crimped, it is heated at 212-302ÂÂ °F (100-150ÂÂ °C) to completely dry the fibers and set the crimp. Some of the crimp will unavoidably be pulled out of the fibers during the following processes. Cutting * 4: Following heat setting, tow is cut into shorter lengths. Polyester that will be blended with cotton is cut in 1.25-1.50 inch (3.2-3.8 cm) pieces; for rayon blends, 2 inch (5 cm) lengths are cut. For heavier fabrics, such as carpet, polyester filaments are cut into 6 inch (15 cm) lengths. Synthesis Synthesis of polyesters is generally achieved by a polycondensation reaction. See condensation reactions in polymer chemistry. The General equation for the reaction of a diol with a diacid is: (n+1) R (OH) 2 + n RÂÂ ´ (COOH) 2 > HO [ROOCRÂÂ ´COO] n ROH + 2n H2O Azeotrope esterification In this classical method, an alcohol and a carboxylic acid react to form a carboxylic ester. To assemble a polymer, the water formed by the reaction must be continually removed by azeotrope distillation. Acylation (HCl method) The acid begins as an acid chloride, and thus the polycondensation proceeds with emission of hydrochloric acid (HCl) instead of water. This method can be carried out in solution or as an enamel. Silyl method In this variant of the HCl method, the carboxylic acid chloride is converted with the trimethyl silyl ether of the alcohol component and production of trimethyl silyl chloride is obtained Acetate method (esterification) Silyl acetate method Ring-opening polymerization Aliphatic polyesters can be assembled from lactones under very mild conditions, catalyzed anionically, cationically or metallorganically. Cross-linking Unsaturated polyesters are thermosetting resins. They are generally copolymers prepared by polymerizing one or more diol with saturated and unsaturated dicarboxylic acids (maleic acid, fumaric acid) or their anhydrides. The double bond of unsaturated polyesters reacts with a vinyl monomer mainly the styrene, resulting in a 3-D cross-linked structure. This structure acts as a thermoset. The cross-linking is initiated through an exothermic reaction involving an organic peroxide, such as methyl ethyl ketone peroxide or benzoyl peroxide. APPLICATION OF POLYESTER: Polyester is used in manufacturing of many products, such as clothing, home furnishings, industrial fabrics, computer, recording tapes, and electrical insulation. It has several advantages over traditional fabrics as it does not absorb moisture. Its low absorbency also makes it naturally resistant to stains. Polyester clothing can be preshrunk in the finishing process. This makes it resist shrinking and it doesnt stretch out of shape. The fabric can be dyed easily, and is mildew resistant too. Textured polyester fibers are an effective, nonallergenic insulator, thus it is used for filling pillows, quilting, outerwear, and sleeping bags. Because of their many desirable qualities, polyester fibers and fabrics have many uses. Polyester is often used in outerwear because of its high tenacity and durability. It is a strong fiber and consequently can withstand strong and repetitive movements. Its hydrophobic property makes it ideal for garments and jackets that are to be used in wet or damp environmentscoating the fabric with a water-resistant finish intensifies this effect. Many jackets and quilted garments are made of polyester. Since polyester can be molded into almost any shape, certain insulating properties can be built-in to the fiber. One method is to create hollow fibers: This process traps air inside the fiber which is then heated by the body. The warm air stays inside and helps warm the body in cool weather. A second method is to use crimped polyester in a fiberfill. The crimp helps keep in warm air. Polyester is an ideal fiber to use for this since it will retain its shape, unlike its cotton and wool counterparts that tend to flatten out over time, significantly reducing their ability to trap warm air. Polyester is often used in pants, shirts, suits, and bed sheets either by itself or as a blend, because of its wrinkle-resistant property and its ability to retain its shape. Since these garments are frequently worn and washed, its stain-resistancy and durability are also desirable. Polyester also has industrial uses as well, such as carpets, filters, synthetic artery replacements, ropes, and films. The pie chart below, taken from Fiber Science by Kathryn L. Hatch, summarizes many of polyesters uses: When the world thinks of plastic films, it thinks of PET. Packaging Applications Polyester film is used in many types of packaging applications ranging from food and drugs to industrial and consumer goods. As plain or metalized, formable, heat-shrinkable and/or coated for barrier, metal adhesion, laminating adhesion, extrusion coating adhesion, printing or sealing, PET film offers excellent characteristics for the packaging market easy machinability, strength, high- and low-temperature resistance, crystal clarity, and printability. The properties that make PET film ideal for packaging applications include: High strength for high speed processes, higher tensions, and higher temperatures Chemical surface treatment during manufacturing or post-manufacturing to enhance characteristics, such as barrier, adhesion, printability, metal adhesion, and release High clarity Strength and resistance to tear Dimensional stability over a very wide range of temperatures and humidity Resistance to attack by moisture and most common solvents Excellent barrier to both oxygen and water vapor to extend shelf- life. Applications Flexible packaging PET film is an excellent laminating substrate for flexible packaging structures, i.e. stand-up pouches, offering excellent flex and puncture resistance. Lidding PET film maintains its strength at both, freezer and oven temperatures, for leak-resistant wraps, lidding, and peelable seals in a wide range of food and nonfood applications. Can laminations Co polyester film is laminated to metal for can applications. Metallized packaging Metallized PET film is used for high barrier, decoration, and embossed holographic applications. Susceptors lightly Metallized PET film is used in microwave Susceptors constructions for browning and cooking food in microwave ovens. Imaging The unique combination of optical, physical, thermal, and chemical properties of polyester film has made it the film of choice for many imaging applications. Some of the major applications include x-ray, photographic, printing, microfilm, photoresist/phototool, overhead projection transparencies, and drafting/reprographics. Currently, these applications account for about 30% of the total PET film consumption. Recent developments in electronic imaging may cause some decline in the use of PET film in some of these applications, but the impact is not expected to be very significant in the near future. The properties that make PET film ideal are its: Brilliantly clear nature Very smooth and glossy surface Ability to: be translucent, opaque, or colored (with suitable additives) have a desired rough or matt finish (with filler additives or coatings) be chemically surface treated during manufacture to enhance adhesion to subsequent coatings Strength and resistance to tear Excellent flatness (freedom from curl and cannot be creased easily) Dimensional stability over a very wide range of temperatures and humidity Resistance to attack by moisture (or most of the common solvents) Non-aging characteristics Shelf life (can be stored for a long time) Applications X-Ray Out of the total PET film usage for imaging applications, more than 30% goes into x-ray base. Typically, a blue-tinted 175 micron PET film is coated with a gelatin-based photosensitive coating and is used as medical x-ray film. Photographic Generally, 100 micron and 175 micron PET film is coated with silver-sensitized layers for photographic applications mainly in professional photographic films and instant photographic applications. Printing PET film is used for printing applications such as in layout, masking, pre-press proofing, plate mounting, and photopolymer plates. PET film is also widely used as a base to print on for displays, signage, posters, labels, etc. Microfilm Originals and duplicates of micro-images of documents, records, drawings, etc., are produced on suitably coated PET film for easy storage, space saving, and retrieval. Photoresist Phototool PET film is used in the plating or etching processes for production of rigid and flexible printed circuits. Overhead Projection Transparencies Coated PET film is used for making overhead projection transparencies in plain paper copying machines. Overhead projection transparencies can be printed by other techniques and written on, as well. Drafting Reprographic PET base film is coated with matt or diazo-sensitized or silver-sensitized lacquers, and is widely used for drafting and in the duplication of engineering drawings. This drawing office film is considered to be more convenient for making subsequent changes in designs, and it can also be used for storage. Industrial Specialty Applications Polyester films thermal, chemical, and dimensional stability coupled with its high tensile strength, durability, flex resistance, and clarity promote broad utilization in Industrial and Specialty applications. Polyester film can be produced in a wide range of thickness (from one to several hundred microns) and visible light transmission from essentially 0% to 99+%. Polyester films ability to be customized through both polymer and surface modification to fit the specific application adds to its versatility and value as a film of choice. Key properties of PET: Dimensional stability, both thermal and moisture Chemical and solvent resistant Strength, tear, and flexual resistance Broad light transmission: optically clear to opaque Surface treatable for adhesion to a variety of materials Broad thickness availability Printable surfaces Few, if any, flexible films available today provide the broad array of performance properties for use in the Industrial and Specialty application market. PET film provides exceptional value in a wide variety of applications. Electrical Applications Polyester film itself is used as electrical insulation. It is also used as a laminate with other substrates, such as non-woven polyester matt (DMD), and organic and inorganic papers, such as aramid paper, silica paper, and mica paper. Polyester film can be used in UL registered electrical systems rated as high as Class F (155ÂÂ °C). Laminates can be used in systems rated as high as Class R (220ÂÂ °C). In motor applications, polyester film is used for ground insulation as slot liners and wedges, as well as phase insulation. The high electrical breakdown voltage, coupled with polyester films high resistance to degradation, makes it ideal for mechanical barriers in wire and cable applications. In transformer and high-voltage distribution equipment applications, polyester film is used to wrap the conductors. Polyester film, with lower extractable content, is effective for use in hermetic applications, such as refrigerator and air conditioner motor/compressor assemblies. PEN polyester film is used where higher temperature performance is required, either in the fabrication stage or in the end-use operating conditions. Thin polyester films (two micron and below) are an integral component of capacitors, where polyesters high dielectric constant and its physical properties enable the component design to be optimized and miniaturized. The physical properties of polyester film (such as dimensional stability, thermal stability at elevated temperatures, and coefficient of friction) combined with its mechanical properties (such as tensile break strength, tensile yield strength, and elongation at break) and its chemical and electrical resistance; make it the preferred material for a wide variety of electrical insulation applications. Magnetics Polyester film is used in a variety of magnetic media, including video, camcorder and audio tapes, and data storage applications such as floppy disks and computer tapes. For all magnetics applications, the base film is further coated with a magnetically receptive coating layer. Polyester film has the excellent dimensional stability required to ensure that the heavy coating layer does not distort and faithfully records the images, sound, or data. The largest volumes of PET film for the magnetic market sector are consumed at present in conventional video and audio tapes. Once again, the dimensional stability of polyester, plus the ability to have a magnetic coating layer adhere to the film, are key to these new applications, which are reaching exceptionally high information densities with corresponding reductions in size and faster data access times. The dynamic nature of this market segment, with new applications growing as others mature, is typical of the innovation that exists in the polyester film industry. Use of polyester in garments Polyester is used in the manufacturing of all kinds of clothes and home furnishings like bedspreads, sheets, pillows, furniture, carpets and even curtains. The disco clothing of the 70s with all its jazz and flash was made of polyester. Hydrophobic nature: High tenacity and good durability makes polyester the choice of fabric for high stress outdoors use. Polyester is also a strong fiber that is hydrophobic in nature. It is thus ideal for clothing to be used in wet and damp environments. The fabric is also coated with a water-resistant finish and further intensifies the hydrophobic nature. Being the most heavily recycled polymer worldwide, it is also used by climbers. Climbing suits, parkas, sleeping bags and other outdoor gear are using the new insulating polyester fiberfill products. One can also do winter windsurfing wearing dry suits lined with polyester fleece. Creating insulation: By creating hollow fibers it is also possible to build insulation into the polyester fiber. Air is trapped inside the fiber, which is then warmed by the heat of the body. This keeps the body warm in cold weather. Another method to build insulation is to use crimped polyester in a fiberfill. The crimp helps keep the warm air in. Polyester is an ideal fabric for this kind of insulation because it retains its shape. Cotton and wool tend to flatten over a period of time and loose the warming effect. Wrinkle resistant: Polyester is also wrinkle resistant and is used very often in everyday clothing like pants, shirts, tops, skirts and suits. Used either by itself or as a blend, it is also stain resistant and hence very popular. Polyester care tips Taking care of polyester clothing is really easy and very time efficient. Polyester clothing can be machine washed and dried. Adding a fabric softener generally helps Dry the fabric at low temperatures to get maximum usage from the clothing. Though polyester does not require much ironing, if