Introduction to Economic Essay Example | Topics and Well Written Essays - 1500 words

Introduction to Economic - Essay Example All economies in the real world depend on a mixture of both governments and markets to allocation resources efficiently. According to markets, resources are allocated through voluntary choices that are made by all participants in the economy and individuals. On the other hand, governments allocate resources involuntarily and enforce laws, taxation systems, regulations, and restrictions to participants. Question 1 Market and Government Economies Countries may have preferences between the using of governments or markets in allocating resources within their economies; however, it is evident that both markets and governments play an important role in mixed economies. Markets generally involve exchange of goods and services in a manner that is voluntary, since no force used to compel any economic participant in buying or selling items of economic value. A market basically thrives on participants’ willingness and desire to exchange. Pure market economies exclusively use markets to a llocate and distribute resources throughout the economy. Government economies rely on involuntary enforcement to allocate resources through setting of rules and laws to govern a resource allocation system. The rules and laws are mandatory for participants in the economy, and the government has the right to enforce the laws and punish participants who fail to agree with the generally accepted rules and regulations. Participants in the economy follow resource allocation rules and regulations because the government and relevant authorities enforce them. Pure command economies use governments exclusively to allocate resources in their economies. However, such kind of economies precludes theoretical extremes, since they do not actually exist and are not realistic with regards to the real world situation. Both pure market and pure command economies provide a benchmark to facilitate real world economic aspects comparison. Mixed economies are therefore evident in the real world, since both pure market and pure command economies preclude non-existent theoretical ideals, leaving the real world economies somewhere in between the two theoretical ideals. Although the theoretical ideals are non-existent in the real world, their collective contributions are evident in mixed kind of economies. It is important to note that, although mixed economies use both markets and governments to allocate resources, real world mixed economies use more of governments or markets, in accordance to the systems they use. This alludes to economies such as capitalism, which is an economic system that is market oriented, as it uses more of market than government in allocating resources. Similarly, communism and socialism are mixed economies that use more of governments than markets to allocate resources (Greene, 2007, p.46). Mixed economies use government policies, rules, and regulations as an inherent dimension used to pursue economic goals in allocation of resources. Economic goals pursued encom pass societal desires such as the need to achieve full employment, equity, stability of the economy, economic efficiency, and sustainable growth. Through economic policies, governments assume the primary responsibility of pursuing economic goals desired by the economy through assisting, controlling, guiding, and regulating the voluntary market. Government policies are undertaken in form of

Club It Part II Essay Example | Topics and Well Written Essays - 750 words

Club It Part II - Essay Example The process of selling advance tickets is not streamlined and Club IT is using old methods to do this while it can use modern methods such as online sales to sell the advance tickets. Resource evaluation Club IT has a number of resources that it can use to make sure that is able to take advantage of the market and be a market leader in its market. For instance, Club IT has a very big floor space that can hold a lot of customers at a time and this can be very important for Club IT as long as they are able to attract as many customers as possible to fill the available space every day. Club IT needs to come up with a way to increase its ability to manage its personnel and other important people who do the various jobs in the club such as the DJ and the band members. Customers Club IT needs to be able to manage its customers in a way that they are happy with the services that they receive. For Club IT to retain the current customers and attract even more, they will need to come up with a customer service model that suits the nature of the customers that they have. This will mean integrating technology in the way they serve the customers. Supply chain As McGreggor (2009) argues, supply chain is a very important aspect of any business. For Club IT, managing the supply chain especially for the kitchen supply is very important because it has a direct effect on how well Club IT is able to serve its customers. This is because the supplies needed by the kitchen will need to be fresh and always available to meet the special orders that the customers give. Solutions: serving the customers better Club IT should develop an online booking service that will allow the customers to book for services online. For instance, the system should allow the customers to access the menus and offer short orders before arriving at the club. This will be helpful because the customers will be able to make orders while they are still in the office or on their way there. The customers should als o be able to log in and see which band will be performing on that particular day and any other day in the near future. At the same time, the system should help the customers to be able to book their favorite tables at the club and have them reserved for them. Solution two: supply chain management Club IT should develop a system that will link its inventory to all its suppliers. This system should be able to not only monitor the inventory levels such as reorder levels, but also be able to share this information with the suppliers so that they can prepare to replenish Club IT’s inventory in time. The suppliers should be able to see Club IT’s inventory levels and dispatch more inventory once the reorder levels are reached. The system should also be able to connect Club IT’s staff to the supplier’s systems so that they can have first hand information such as when new and fresh orders have arrived at the supplier’s point. This will help Club IT to be ab le to manage its inventory in a better way and increase customer service. Solution three: selling advance tickets online The customers should also be able to pay online for all the services they book online. Club IT should come up with a way for the customers to pay online. Club IT should collaborate with a reliable online payment firm such as

Communication Plays An Important Role Education Essay

Communication Plays An Important Role Education Essay Reading, writing, speaking, listening, viewing, and visually representing comprise the language arts and literacy processes. According to Gunning (2010), these elements start developing at an early age and progressively become more refined as a child amasses a foundation of oral language, written language, and life experiences. Task: A.   Write an essay (suggested length of 2-4 pages) in which you discuss each of the following in the context of language arts development in elementary-aged children: 1.   Reading 2.   Writing 3.   Speaking 4.   Listening 5.   Viewing 6.   Visually representing The ability to communicate plays an important role both in intellectual development and in the growth of personality. Children at each grade level have their characteristic needs for growth as well as their characteristic methods of reaction and response. As teachers learn to fit the language arts program to these needs and to these ways of responding, as they set realistic goals, and as they work through rather than against childrens normal patterns of development, satisfactory growth in language will result. For the language arts program is both an end and means. It develops skills in all forms of communication through language, giving children increasing insight into the structure and effective use of their mother tongue and developing their ability to read and listen as well as to use reading and listening for worth-wile purposes in life. At the same time, language is the means by which children aquire knowledge and understanding in all areas of education and in first-hand experi ence in life. Reading is an important element of the literacy process for an elementary student. Reading can open the door to various new experiences and thoroughly expand a students horizon for learning. Books are important to help children understand the development of them selves as well as others. Children love to probe motives and discover answers to their own problems through reading. Reading is the interpretation of written language. Children learn their first words by simply being told what they are. The process by which he or she keeps in mind the visual image, the pronunciation, and the meaning is not all together clear, but he uses such sight words exclusively in the early stages of reading. Elementary children learn at the Elementary level through a combination of matching and differentiating visual images and by memorizing the position of certain words. Configuration, or shape and length of words are natural cues for most beginners. Children are usually unconscious to the fact that th ey are leaning these skills, until they become thrilled about the fact that they can read by themselves. Children also develop reading skills by connecting words with pictures and associating the two. Writing is committing a persons thoughts or ideas to paper. Once the writing is encoded then the reading can be decoded. Listening to the teacher read stories and poetry about their own experience or related to it helps children to sense the power of words and the ways in which they are fitted into sentences. The two elements go hand in hand together. Children can grow and develop into mature writers through motivation that stems from their own interest. Direct teaching and conscious learning are needed to meet the various needs involved in the development of writing. Children first learn to write their names in order to identify their work. The process develops slowly in the first year and then rapidly increases in the second year of school. By the end of third grade an Elementary student is usually writing with a great deal of skill and independence. As the child gains in ability, he or she is encouraged to write independently, turning to the teacher for any help needed with placem ent on paper, handwriting, or spelling of words. As the student develops independence in writing and spelling, the child also grows in interest in using writing for various personal and practical purposes and in satisfaction in the power he is achieving. Speaking is the one activity that most Elementary children can all participate in no matter the age or grade level. Speaking can be defined as communicating vocally. Under favorable circumstances the normal child speaks freely and fearlessly when he or she enters school. The student uses words to express his wishes and his or her feelings, and may even employ phrases such as, thank you, please, and excuse me. From the first day of school, the child continues to add to his or her abilites in speaking. As the student has new experiences, he or she aquires new words with wich to talk about. As the student adds to his vocabulary, he or she learns new ways to put words together to convey what he or she thinks. Every new experience gives him more words or clearer understanding of ones already known; every new interest makes the student eager to find better ways to vocally express there selves. The students successful contacts with reading and writing, although they depend in part on his ab ility in oral language, will also serve that ability. As the student progresses in school he or she will become more adapt at articulation. Listening can be defined as giving attention with the ear. The development of children in listening is continuously interrelated with their growth in speaking, and after the early years of childhood, with their reading and writing as well. Listening is a forerunner of speaking and continues to bear a reciprocal relationship to it. For every speaker, there must be a listener; the listener, in turn, becomes a better speaker for having listened well to the speech of others. Elementary aged children have the ability to assume responsibility to the speaker, asking questions about what they do not understand, listening and carrying out simple directions, and following sequences of events in simple stories. As children set goals for themselves in intelligent listening, their progress will be accelerated. Listening is an important language arts element regarding the fact that children use it to conversate, discuss, story reading, poetry, assemblies, and many many activities in Elementary sch ool. Viewing could be defined as seeing, watching, or visually inspecting visual items. These could include: pictures, books, maps, videos, and various others. Theatrical experiences could also be viewed, as well as classroom lectures. Children today are bombarded with images and visual media of all types to persuade them to believe certain things, or feel a certain way. Viewing is an important element in the Language Arts for Elementary students because it is there way to development academic skills, as well as social skills. Children are viewing every day in our schools diagrams, dvds and many other visual aids for learning development. Viewing development entails giving attentionto facts, relationships, inferences, and to critical analysis. à ¢Ã¢â€š ¬Ã‚ © Visually representing refers to communicating through visual images. These images include photographs, drawings, graphs, maps, and diagrams, as well as video presentations, dioramas, models, and dramatizations. This form of communication requires the student to collect and organize information, decide on the best way to convey it to others, and produce a visual product to accomplish this communication, often incorporating print and sound with the visual images, if the student is trying to convey information or sway opinion. It requires organizing and representing an event or sequence of events for the pleasure or diversion of an audience, if the purpose of the representation is to entertain.

The Study of the Affects of Long Term Agruculture on the Soils of Europ

The Study of the Effects of Long Term Agruculture on the Soils of Europe 1. Introduction Soil, like iron, is a natural resource. Just as iron is mined from the earth, soil is mined for its nutrients by farmers across the globe. What most people don't realize is that like iron, soil is a non-renewable resource. Soils form naturally at rates of 0.5-0.02 mm/yr, whereas the average human-induced erosion rate is 2.0 mm/yr in the U.S.(Yassoglou, 1987). These numbers reflect the dire predicament of soils around the world, and demand answers to questions such as: What causes the degradation of soils? What role have humans played in the deterioration of soils? How much more abuse can the soil withstand? Due to the lengthy history of agriculture in Europe and the Mediterranean, these areas might provide insight into the answers of these questions. 2. Is there a problem of soil degradation in Europe? 2.1 Factors that degrade soils Soil degradation as it pertains to agriculture, refers to a deterioration in at least one of the five soil qualities: volume, structure, organic matter and/or biological activity, chemical composition, and fertility. Of the many processes that lead to the deterioration of these qualities, erosion is the most prevalent and pernicious. Erosion contributes directly to the degradation of all five qualities, and is indirectly involved in other processes of soil deterioration (Yassoglou, 1987) . Due to its importance as a factor of degradation, and the limited scope of this paper, erosion will be the focus of this inquiry. 2.2 Variables that affect soil sensitivity to erosion Soil sensitivity is dependent upon the initial state of the soil following pedogenesis, influxes of material, and the... ...(Morgan,1987). Further study could be pursued in the effect of degrading influxes on single soil properties. A complete study of soil degradation within the European Community as a whole should be done, as well as adopting a set of universal standards for measuring soil loss (Yassoglou, 1987). An interesting question to pose at this point is " If soil degradation is such a problem, why hasn't productivity been adversely affected?" The irony is that the same technological advances that increase soil degradation , increase actual productivity of the farm. Fertilizers, pesticides, and machinery all increase yields per a given area, and it is these factors that have prevented an agricultural crisis in Europe. In essence, we are running our own experiment on the soil, to see if our technology can outrace its destruction of the very foundation upon which it is built.

Martyn Pig Quotes Essay

â€Å"Something I don’t know what it was. It wasn’t real. † â€Å"It’s strange, the lack of emotion, the absence of drama in reality. When things happen in real life, extraordinary things, there’s no music, there’s no dah-dah-daaahhs. There’s no close-ups. No dramatic camera angles. Nothing happens. Nothing stops, the rest of the world goes on. † â€Å"Reality. When you gradually come to realise that all that stuff in books, films, television, magazines, newspapers, comics – it’s all rubbish. It’s got nothing to do with anything. It’s all made up. It doesn’t happen like that. It’s not real. It means nothing. † Morality â€Å"Badness is a relative thing† Death/Tradgey/Sadness â€Å"I pulled the trigger, the pistol spat, and the sparrow fell. Just like that. I stared in Disbelief. I’d killed it. Stopped its life. Shot it dead. † (pg 150) – Short statements separated by commas describing the process of killing the sparrow (incites imagery in readers mind, enables them to vividly imagine the scene) illustrate the simplicity of killing and how easy it is to murder. Indicates that Martyn isn’t really a bad person, there was no hatred or revengefulness behind the deed, he was just curious. Short, consise sentences highlight his disbelief. â€Å"I can still here the sound of it now. That sickening crack of bone on stone. I knew he was dead. Instantly. I knew. † – The rhyming of bone and stone emphasise the impact of William Pigs body as it hit the fireplace, but also emphasise the impact that his death would have on the rest of Martyn’s life. The short sentences illustrate Martyn’s instant feeling of shock that engulfed his body, so much so that he couldn’t string together long coherent sentences and could only manage small outbursts during his brains realisation of the terrible thing that had just happened and how his world is now changed forever. â€Å"I hated him. I hated every inch of him. From his broken-veined, red-nosed face to his dirty, stinking feet. I hated his beery guts. But I never meant to kill him. † Pg 24 – â€Å"hoping I could get away with pretending that he was ill in bed, asleep. Not dead, just asleep. I had no choice. Do you understand ? I had no choice. † Alcoholism â€Å"He looked like what he was: a drunk. † Pg 10 – Short and simple, no beating around the bush. Martyn has given up denying the terrible state is father is in, it is clear that he accepted long ago hi father has a serious alcohol problem. The sincerity of the sentence infers Martyn’s resentment and hatred towards his dad’s self-imposed alcoholic condition. â€Å"But with me, he was a drunk with responsibilities, a drunk with child benefit, a drunk with someone to clear up the sick. † Pg 11 – ‘But’ highlight two alternate realities and how different Billy Pig’s life would be without Martyn, showing the positive impact that Martyn has had on his life. Ironic because William Pig had a very negative impact (relative to readers opinion) on Martyn’s life. â€Å"Alcohol. It sucks the life out of a face and replaces it with its own dumb shine of inanity. It’s up to you. If you want to lose yourself, have a drink. † – Talking directly to the reader engaging them in the story and emphasises how badly his dad alcoholism impacted his life, and strongly warns the readers against it. Loneliness/Isolation: â€Å"A great swirling mess of sound searing its way into my head† – Martyn’s mind is different; he is isolated from the outside world.

Evening News Essay

News is information or a presentation about current events and is reported by a variety of means such as newspapers, periodicals, radio, television and websites on the Internet. The reporting of news falls into the field of journalism, which are typically written or broadcast in news style. Most news is investigated and presented by journalists and can be distributed to various sites via news agencies. On the other hand, according to a web encyclopedia, â€Å"Short for Web log, a blog is a Web page that serves as a publicly accessible personal journal for an individual. Typically updated daily, blogs often reflect the personality of the author.†(par. 1). A blog is a mixture of a person’s experiences in life and what is happening on the Web. It is like a kind of a personal diary-cum-guide site. There are unique types of people, thus, there are as many unique types of blogs as well. In another case, a blog is also a web site that contains dated entries in reverse chronological order (most recent first) about a particular topic. Functioning as an online newsletter, blogs can be written by one person or a group of contributors. Entries contain commentary and links to other Web sites, and images as well as a search facility is also included. Most blogs also invite feedback and comments from visitors and Internet newsgroup discussions, which tend to be more question-and-answer oriented. People have already maintained blogs before but it only gained momentum in 1999 when automated published systems were introduced. Nowadays, thousands of people use web site blog hosting services to simplify and accelerate the publishing process. The template-based software makes it easy to create an online blog and continuously allows you to add entries. Similarly like news, a blog   is a form of media. However, news is considered a traditional media while blog is connoted as internet type of media. It is a platform to communicate what anyone may wish to let anyone know within reach of an internet connection. In traditional media, you are first defined by your medium. There is some constraint on how the contents are delivered physically or digitally which is determined by your medium. According to Maverick blog article, â€Å"There is a cost versus time versus interest versus access series of constraints that determines who your audience is, how you reach them and what they expect of you. Over time, those constraints have evolved our media into very defined roles†(par. 3). Blogs are different. There is no cost constraint. It costs nothing to create a blog. There are time constraints, but much less than traditional media. Bloggers are not pressured   to publish or create an article on a schedule. Blogging is basically personal and this is where the paths of blogging and traditional media diverge. Traditional media is business, thus it has become exclusively corporate while blogging remains almost exclusively personal. However, some bloggers have started to make money from their blogs but what they put in their blogs is all up to them which gives them satisfaction.   Members of traditional media are employees. They get hired for a specific job and they have to do that job. They get hired by a corporation that is most likely public, which means that their employers are concerned in getting their stock price up above all else. Thus, they write news and articles that is dictated by subjects perceived to make more money.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   In comparison to mainstream media, blog gives anyone the freedom to write about anything. They can write opinion. They can report facts. They can ask questions. They can write any topics they want. Individual Web surfers post their own eclectic and varied thoughts. Still, others such as known political parties, religious and professional groups, businesses, and media organizations have created their own blog sites too. A report by Snow states that, â€Å"audience for blogs in general is more than 3.5 million strong, and growing. One group that surveys political blogs believes between 20,000 and 25,000 people are regularly talking about political topics on Weblogs. These days people from every corner of the country are finding each other on screen. The impact of all this dialogue is hard to gauge, but it is clearly shaping politics and media coverage†(par. 16-18). Wright also presented that â€Å"Blogging grew from the ground up as a grassroots effort. What started as a few people conversing about common interests via real-time Internet postings has become a continuous conversation among millions of   bloggers and readers. With millions of bloggers expressing their thoughts, experiences, and information they’ve learned in their fields of interest, this medium has become a worldwide forum†(3). Another interesting development of blog in comparison to traditional media is that even news agencies have created their own section termed newsblogs. Auty argues that â€Å"newsblogs supplement and work alongside traditional news media by filtering and reporting news. She praises the growth of personal diaries and eyewitness accounts (such as those that sprung up after 9/ 11) but overall sees blogs as being a new way of distributing and collecting the news rather than a new source of news itself†(341). The rapid pace of technology is changing the nature of blogs as well. The popularity of digital audio players such as the iPod has spurred the growth of blogs with audio content. People can download a wide range of audio files like music and listen to them at their convenience using a PC or a portable media player. The rapid adoption in the use of cell phones with built-in digital cameras and wireless Internet connections is also changing the face and pace of blogging. Bloggers armed with these tools can snap a picture, writes a short caption and then post it on a â€Å"moblog† or mobile log, regardless of time and place.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Thus, with these conveniences brought about by blogging and the personal satisfaction they give on people, it is not surprising that future generations will no longer subscribe to traditional media. As Wright argues, â€Å"blogs have the power to create businesses, change the course of political history, and transform the way the mainstream or traditional media looks at itself.†(2). BIBLIOGRAPHY Auty, Caroline(Editor). Politics and Government in the Age of the Internet. Bradford, , UK: Emerald Group Publishing Limited, 2005. p 341. Blogging Vs. Traditional Media. Blog Maverick Website. May 13, 2006. 27 Oct. 2006 Snow, Kate. The Power of the Blog. ABC News website. Sept. 26, 2004. 27 Oct. 2006 Webopedia. The No. 1 Online Encyclopedia dedicated to Computer Technology. 26 Oct. 2006 Wright, Jeremy. Blog Marketing. Blacklick, OH, USA: McGraw-Hill Companies, The, 2005. p 2-3.   

Top 4 Tips to Write an Excellent Management Research Paper

Top 4 Tips to Write an Excellent Management Research Paper Write an Excellent Management Research Paper Research paper is the type of writing work that can be completed by graduates, undergraduates and PhDs and can become published in research or academic journals. Completing a research paper can take various amounts of time, because it depends on the depth of research, objective and the assignment itself. Therefore, it can take a couple of days or weeks to complete a basic management research paper, while writing a paper like this for an advanced program can take months or years to finish. Top 4 writing tips to help you craft an excellent research paper no matter the difficulty level: Select the Problem Choosing the right topic is the foundation of your success. You cant write a good paper about the things that youre not passionate about. Good news is that research paper on management can cover a lot of topics and problems which span across different aspects of organizations, business or different spheres of business. When choosing a topic, make sure that its not too broad and not too narrow, so that you can find enough materials to do the research. In addition to this, your topic should be relevant to actual challenges in business environment. Assess the Research There are certain stages of research that you need to complete as youre working on your paper. First of all, you should select the sources and references for your work that will be relevant to the thesis statement that you have chosen. In search of materials, dont forget to visit your university library and make sure to search for relevant research papers online. We also recommend you to use Emerald and Science Direct to search for quality research data materials. On all stages of your research, you should make sure that youre following all the requirements assigned by your professor, because you dont want improper formatting or minor flaws get in the way of your research paper. Structure Your Paper If selecting the right topic is the foundation of a good paper, good materials are the building blocks for your paper, then giving your paper a proper order and organization is the glue that holds building blocks together. Present your paper in the logical manner so that one paragraph reinforces and prepares the ground for each subsequent one. Transform the Research Never forget that research papers dont aim to restate facts that are already known. The main goal of the research is to come up with new ways to solve the researched issue. You have to show that you have studied the topic thoroughly, got acquainted with different points of view and were able to offer new, unique solutions to solve the real ongoing problems in the modern business environment. If you can speak from your own managerial experience, that would be even better. Once your paper is complete, dont forget to proofread it at least twice to remove vague parts and intensify the message. Following these four steps, you will certainly be able to write an excellent research paper.

white coller crime essays

white coller crime essays This is the age of the white-collar crime. A time when the words thief and businessmen go hand in hand. The recent events of Enron and their accounting firm Anderson Accounting has made this type of crime come to the forefront. White-collar criminals don't get their hands dirty in their work; they use their heads to get what they want instead of using muscle. These criminals are just as dangerous as the bank robbers and murderers in my opinion. In these times, even the most seemingly respectable people are being suspected of committing white-collar crimes. White-collar crimes can vary in the type and size of the crime. There are always new scams coming out. Embezzlement, false advertising, price fixing, and consumer fraud are some of the more popular kinds. Individuals that have the power of controlling money in a business are more likely to commit embezzlement. This is one of the fastest rising crimes in the nation. According to the FBI, embezzlement rose thirty eight percent from 1984 to 1993. Consumer fraud is another growing form of white-collar crime. This is defined as the use of deceit, lies, or misrepresentations to entice customers to buy goods or services. A Unites Sates senator stated thatnearly a quarter of all the money spent by American consumers was for nothing of value.? Bogus ads, job scams, and telemarketing fraud are all examples of consumer fraud. Basically these scams ask you to send money for something that is non-existent, or will never get to where you want the money to go. After September 11, 2001 these types of scams rose all over the country. The most obvious way these crimes differ from other crimes is that they don't require anydirty work.? When people think of crimes, they think of get-away cars and bank heists. The new weapons of choice for criminals are a computer or a telephone. They are just as deadly as a man with the gun. White-collar crimes are committed out of greed; the people who usually...

Business Ethics in Bangladesh Essay Example for Free

Business Ethics in Bangladesh Essay Morality (706) , Business ethics (133) Social responsibility requires individuals engaging in business endeavors to behave in an ethical manner. Ethics are principles of behavior that distinguish between right and wrong. Ethical conduct conforms to what a group or society as a whole considers right behavior. People working in business frequently face ethical questions. Business ethics is the evaluation of business activities and behavior as right or wrong. Ethical standards in business are based on commonly accepted principles of behavior established by the expectations of society, the firm, the industry, and an individual’s personal values. Critically, â€Å"Business Ethics† can be defined as the critical, structured examination of how people & institutions should behave in the world of commerce. In particular, it involves examining appropriate constraints on the pursuit of self-interest, or (for firms) profits, when the actions of individuals or firms affects others. (9) With unethical business practices often receiving publicity, the public sometimes believe that people in business are less ethical than others in society. But ethical problems challenge all segments of our society, including government, churches, and higher education. Most business leaders realize their firms cannot succeed without the trust of customers and the goodwill of society. A violation of ethics makes trust and goodwill difficult to maintain. In thousands of companies, executives and employees act according to the highest ethical standards. Unfortunately managers in some firms behave unethically, and these instances are often highly publicized. Personnel executive say the major reason managers behave unethically is to obtain power and money. Business ethics is a wider term that includes many other sub ethics that are relevant to the respective field. For example there is marketing ethics for marketing, ethics in HR for Human Resource Department and the like. Business ethics itself is a part of applied ethics; the latter takes care of ethical questions in the technical, social, legal and business ethics. When we trace the origin of business ethics we start with a period where profit maximization was seen as the only purpose of existence for a business. There was no consideration whatsoever for non-economic values, be  it the people who worked with organizations or the society that allowed the business to flourish. It was only in late 1980’s and 1990’s that both intelligentsia and the academics as well as the corporate began to show interest in the same. Nowadays almost all organizations lay due emphasis on their responsibilities towards the society and the nature and they call it by different names like corporate social responsibility, corporate governance or social responsibility charter. Primary and Important Sources of Business ethics Ethics in general refers to a system of good and bad, moral and immoral, fair and unfair. It is a code of conduct that is supposed to align behaviors within an organization and the social framework. But the question that remains is, where and when did business ethics come into being? Primarily ethics in business is affected by the following sources – family, religion, culture, legal system, codes of conduct, and personal experience. It is for this reason we do not have uniform or completely similar standards across the globe. These factors exert influences to varying degrees on humans which ultimately get reflected in the ethics of the organization. For example, ethics followed by Grameen Phone Ltd. are different from those followed by Square Group or Unilever for that matter. Again ethical procedures vary across geographic boundaries. A person’s values is the source of their ethics, and it is their philosophy, spiritual or religious beliefs that usually help mold and shape those values, but most of all it is how a person is raised by his family that sets the foundation for his ethics in later life. It’s the basic source of business ethics. It is one of the oldest foundations of ethical standards. Religion wields varying influences across various sects of people. It is believed that ethics is a manifestation of the divine and so it draws a line between the good and the bad in the society. Depending upon the degree of religious influence we have different sects of people; we have sects, those who are referred to as orthodox or fundamentalists and those who are called as moderates. Needless to mention, religion exerts itself to a greater degree among the orthodox and to lesser extent in case of moderates. Fundamentally however all the religions operate on the principle of reciprocity towards ones fellow beings! Culture is a pattern of behaviors and values that are transferred from one generation to another, those that are considered as ideal or within the acceptable limits. No wonder therefore that it is the culture that predominantly determines what is wrong and what is right. It is the culture that defines certain behavior as acceptable and others as unacceptable. Human civilization is fact has passed through various cultures, wherein the moral code was redrafted depending upon the epoch that was. What was immortal or unacceptable in certain culture became acceptable later on and vice versa. During the early years of human development where ones who were the strongest were the ones who survived! Violence, hostility and ferocity were thus the acceptable. Approximately 10,000 year ago when human civilization entered the settlement phase, hard work, patience and peace were seen as virtues and the earlier ones were considered otherwise. These values are still in practice by the managers of to day. Still further, when human civilization witnessed the industrial revolution, the ethics of agrarian economy was replaced by the law pertaining to technology, property rights etc. Ever since a tussle has ensued between the values of the agrarian and the industrial economy! Laws are procedures and code of conduct that are laid down by the legal system of the state. They are meant to guide human behavior within the social fabric. The major problem with the law is that all the ethical expectations cannot be covered by the law and specially with ever changing outer environment the law and specially with ever changing outer environment the law keeps on changing but often fails to keep pace. In business, complying with the rule of law is taken as ethical behavior, but organizations often break laws by evading taxes, compromising on quality,  service norms etc. A business code of ethics is a series of established principles an organization uses when operating in business or society. Organizations often develop these codes to ensure that all individuals working in the company operate according to the same standards. Most individuals have an internal code of ethics or moral principles they follow in life. A situation one individual finds ethically reprehensible may not seem so to another individual. Using a code of ethics in business attempts to create a basic understanding of acceptable ethical behavior to be used when handling situations involving the company, government agencies and the general public. If an individual is rewarded or is not punished for behaving unethically, the behavior will probably be repeated. This type of experience encourages other to do unethical things in future. Likewise the threat of punishment and the lack of reward for unethical activities encourage that particular person and all others to behave ethically. Factors Influencing Ethical Behavior To encourage ethical behavior, executives, managers, and owners of firms must understand what influences behavior in the first place. The several factors that affect individuals’ behavior in business: the business environment, organizational factors, and an individual’s personal moral philosophy. Almost daily, business managers face ethical dilemmas resulting from the pressure of the business environment. They are challenged to meet sales quotas, cut costs, increase efficiency, or overtake competitors. Managers and employees may sometimes think the only way to survive in the competitive world of business is by deception or cheating. In some instances, an organization may use someone else’s successful work without the permission of the owner or originator. Conflict of interest is another common ethical problem stemming from the business environment. Often an individual has a  chance to further selfish interests rather than the interests of the organization or society. To gain favor with people who make purchasing decisions for their companies, a seller may offer special favors or gifts, ranging from a metal to clothing to trips. Some offer cash-a kickback-for putting through a contract or placing orders with a company. Others offer bribes. Such illegal conduct will damage the organization in the long run. In order to limit unethical behavior, business firms must begin by expecting their employees to obey all laws and regulations. The international business environment presents further ethical dilemmas. Business people and government officials in different countries and cultures often operate according to different ethical standards. The organization itself also influences ethical behavior. Individuals often learn ethical or unethical behaviors by interacting with others in the organization. An employee who sees a superior or co-worker behaving unethically may follow suit. An organization can also use rewards to influence the behavior of its members. If an individual is rewarded or is not punished for behaving unethically, the behavior will probably be repeated. Likewise the threat of punishment and the lack of reward for unethical activities encourage ethical behavior. The severity of punishment also sends a message to other individuals who might be considering similar activities. A person’s own moral philosophy also influences his or her ethical behavior. A moral philosophy is the set of principles that dictate acceptable behavior. These principles are learned from family, friends, co-workers, and other social groups and through formal education. In developing a moral philosophy, individuals can follow two approaches: The Humanistic Philosophy focuses on individual rights and values. Individuals and organizations adopting this philosophy would honor their moral duties to customers and workers. Individuals and organizations following the Utilitarian Philosophy seek the greatest good for the largest number of people. Most of us would agree that it is ethics in practice that makes sense; just having it carefully drafted and redrafted in books may not serve the purpose. Of course all of us want to be fair, clean and beneficial to the society. For that to happen, organizations need to abide by ethics or rule of law, engage themselves in fair practices and competition; all of which will benefit the consumer, the society and organization. Primarily it is the individual, the consumer, the employee or the human social unit of the society who benefits from ethics. In addition ethics is important because of the following: 1. Satisfying Basic Human Needs: Being fair, honest and ethical is one of the basic human needs.   Every employee desires to be such himself and to work for an organization that is fair and ethical in its practices. 2. Creating Credibility: An organization that is believed to be driven by moral values is respected in the society even by those who may have no information about the working and businesses of that organization. British American Tobacco, for example is perceived as an organization for good corporate governance and social responsibility initiatives. This perception is held far and wide even by those who do not even know what business the organization is into. 3. Uniting People and Leadership: An organization driven by values is revered by its employees also. They are the common thread that brings the employees and the decision makers on a common platform. This goes a long way in aligning behaviors within the organization towards achievement of one common goal or mission. 4. Improving Decision Making: A man’s destiny is the sum totals of all the decisions that he/she takes in course of his life. The same holds true for organizations. Decisions are driven by values. For example, an organization that does not value competition will be fierce in its operations aiming to wipe out its competitors and establish a monopoly in the market. 5. Long Term gains: Organizations guided by ethics and values are profitable in the long run, though in the short run they may seem to lose money. For Example, Tata group, one of the largest business conglomerates in India was  seen on the verge of decline at the beginning of 1990’s, which soon turned out to be otherwise. The same company’s Tata NANO car was predicted as a failure, and failed to do well but the same is picking up fast now. 6. Securing the Society: Often ethics succeeds law in safeguarding the society. The law machinery is often found acting as a mute spectator, unable to save the society and the environment. Technology, for example is growing at such a fast pace that the by the time law comes up with a regulation we have a newer technology with new threats replacing the older one. Lawyers and public interest litigations may not help a great deal but ethics can. Business Ethics- Practice in Bangladesh In Bangladesh, though practice of Business ethics is still not so commendable in public sector and small companies, but business ethics has been an increasing concern among larger companies, at least since the 1990s. Major corporations increasingly fear the damage to their image associated with press revelations of unethical practices. The following information about the functions relating ethics and social responsibility of 2 reputed companies of our country will give a brief idea about the practice of Business Ethics in Bangladesh. Advanced Chemical Industries (ACI) Limited is one of the leading conglomerates in Bangladesh, with a multinational heritage. They have a mission to achieve business excellence through quality by understanding, accepting, meeting and exceeding customer expectations. They follow International Standards on Quality Management System to ensure consistent quality of products and services to achieve customer satisfaction. They are focusing on improving the food habit of consumers through providing more ready to cook products and ready to eat as well. Their visions are to establish harmonious relationship with the community and promote greater environmental responsibility within its sphere of influence. Their Values are Quality, Customer Focus, Fairness, Transparency, Continuous Improvement, and Innovation. Societal Development through Educational Programs: ACI’s guiding principle in all its operations is to be a responsible corporate citizen. Thus Social Responsibility is a top priority for every individual at ACI. Their Initiatives and significant contribution to societal development is Continued Medical Education (CME) for medical professionals and Children’s Education Programs. ACI has also undertaken an English Education program in Faridpur, one of the remotest districts of Bangladesh. This provides support to teach English Language to school going children. Doctors in Bangladesh who are not living in the metropolitan cities have very limited access to the Internet or any other sources of information. In order to keep them updated on the developments in the medical practices regularly, the CME program has been proven highly effective. ACI believes that by promoting education of children, they are contributing to societal development by shaping the minds of their futur e leaders. Environment Friendly Practices: ACI has undertaken extensive programs to educate crop farmers all over rural Bangladesh in Good Agricultural Practices. They have a team of agricultural experts working at the field level all across the country, holding a range of technical trainings and field demonstrations. ACI also has similar education programs for animal and poultry farmers. These include, Technical trainings on diverse aspects of farming, and on application of new technologies, Farmers‘ group meeting for sharing of learning and experience, Free visits to farms by veterinarians, to identify problems and give advices to individual farmers. Most importantly, making the farmers aware of ways to protect the environment from hazardous uses of chemicals on their farms, allowing them the opportunity for informed decision-making. ACI hopes to continue to play a leading role in promoting greater environmental responsibility among farmers in Bangladesh. ACI Company produces some products which do not work properly, like ACI Aerosol. It is mainly produced for killing mosquitoes, but that’s not true. Most of the mosquitoes go away for sometimes but not killed. Sometimes some  products like ACI Atta, ACI Maida, etc contains 1975 grams instead of 2000 grams but they fix their prices for 2kg of the products. These are unethical for their marketing practices. Over the last four decades, Unilever Bangladesh has been constantly bringing new and world class products for the Bangladeshi people to remove the daily drudgery of life. Over 90% of the country’s households use one or more of Unilever products. They aim to give everybody a little something to celebrate about themselves every day. They believe that to succeed in business, it is essential to maintain the highest standards of corporate behavior towards everyone they work with, the communities they touch, and the environment on which they have an impact. Effective Code of business principles: Their code of business principles describes the operational standards that everyone at Unilever follows, wherever they are in the world. It also supports their approach to governance and corporate responsibility. Code of business principles are- Standard of conduct, Obey the law, employees, consumers, shareholders, business partners, community involvement, public activities, the environment, innovation, competition, business integrity, conflict of interest, compliance, reporting, monitor. Women Development and Women Empowerment: Unilever strongly believes in the importance of empowering women in Bangladesh, because the progress of any society will be constrained if a significant part of its population is neglected and excluded from the benefits of development. They believe, with economic and educational empowerment, women can become more vocal about their rights and become stronger in withstanding repression in any form. So they have established â€Å"Fair & Lovely Foundation†. The mission of this foundation is to encourage economic empowerment of Bangladeshi women through information and resources in the areas of Education, Career and Enterprise. It is this realization that has brought about the Fair & Lovely Foundation Scholarship Program. Under this scholarship scheme, women who have passed their HSC each receives a Taka 25,000 scholarship to support her tertiary level education. Unilever produces Fair & lovely fairness cream, lotion, etc and they claim that skin color will be white after using this product. But that it is not true. There are no scientific values about whiteness. This is totally unethical performance in marketing activities of this company. Comparative Customer Evaluation on Ethical Performances of 3 Reputed Companies of Bangladesh Figure – Customer Response on Maintenance of Ethical Procedure by the Companies (1) Figure – Customer Response on Deceptive Practices Used by the Companies (1) Figure – Customer Response on Significant Contribution toward Ethical Marketing (1) Figure – Customer Response on Satisfaction through Using Products of the Companies (1) Figure – Customer Response on Changing of Defective Products by the Companies (1) Bribery & Nepotism- A Curse against Ethical Practice Corruption is a very strong example of unethical behavior and it is still prevailing in different business sectors of our country in the form of Bribery and Nepotism. Nepotism is the way in which someone approaches and compels a person of power and authority to take necessary steps to get his work done by capitalizing kinship, friendship or political lobbying. Bribery means offering gifts, money etc. to get a work done in unethical way. Often public officers are infamously alleged for taking bribes to award public contracts using their power. Bribery and Nepotism also exist in the corporate world, which is very harmful for ethical practices and creates hindrances in building proper and ethical business environment. Managing or Encouraging Ethical Behavior Managing the financial operations of a company can be a complex effort. Companies need to balance their desire to grow with the realities of maintaining their financial relationships, satisfying their investors and making a profit. Government Regulations: The government can do so by legislating more stringent regulations. But, rules require enforcement and when in many cases there is evidence of lack of enforcement even the ethical business person will tend to â€Å"slip something by† without getting caught. Increased regulation may help, but it surely cannot solve the entire business ethics problems. Trade Associations Setting Guidelines: Trade associations can and often do provide ethical guidelines for their members. These organizations within particular industries are in an excellent position to exert pressures on members that stoop to questionable business practices. Companies Providing Code of Ethics: Employees can more easily determine and adopt acceptable behavior when companies provide them with a â€Å"code of ethics.† Such codes are perhaps the most effective way to encourage ethical behavior. A code of ethics is a written guide to acceptable and ethical behavior that outlines uniform policies, standards and punishments for violations. Because employees know what is expected of them and what will happen if they violate the rules, a code of ethics goes a long way towards encouraging ethical behavior. However, codes cannot possibly cover every situation. Companies must also create an environment in which employees recognize the importance of complying with the written code. Managers must provide direction by fostering communication, actively modeling and encouraging ethical decision making, apart from investing in training employees to make ethical decisions. Whistle Blowing Technique: Sometimes, even employees who want to act ethically may find it difficult to do so. Unethical practices can become ingrained in an organization. Employees with high personal ethics may then take a controversial step called â€Å"whistle blowing.† Whistle blowing is informing the press or government officials about unethical practices in an organization. Whistle blowing could have averted disaster and prevented  needless deaths in the Challenger space shuttle disaster, for example. How could employees have known about life-threatening problems and let them pass? Whistle blowing on the other hand, can have serious repercussions for employees; those who make waves sometimes lose their jobs. The main objective of business is to serve people with their every need for the well-being of human being and to ensure that, there is no alternative of following business ethics. Since the practice of business ethics in our country is still not ubiquitous, we are not getting the proper environment for the business, and thus often we are facing some crisis situation and it is hampering our total economic development. Our policy makers and the top executives of the organizations should give more concern in making ethical policies and take proper steps to encourage business executives and service holders to follow them. 1) â€Å"Ethics In Marketing On Bangladesh Perspective: Study on Few Companies of Bangladesh†- collected from â€Å"World Journal of Management Volume 2. Number 2. September 2010†, the direct link- http://wbiaus.org/10.%20Tajmeela-FINAL.pdf 2) â€Å"Business for the 21st Century†- Skinner & Ivancevich 3) â€Å"An Integrated Approach to Business Studies† (4th edition)- Bruce R Jewell 4) â€Å"Business Studies† (4th edition)- Dave Hall-Rob Jones-Carlo Raffo- Alain Anderton 8) www.sagepub.com/upm-data/10923_Chapter1.pdf 9) www.businessethics.ca/definitions/business-ethics.html Business Ethics in Bangladesh. (2016, Apr 12). We have essays on the following topics that may be of interest to you

Fair Value Accounting Essay Example | Topics and Well Written Essays - 1500 words

Fair Value Accounting - Essay Example (Parshall, 2009) This study is set out to discuss fair value accounting and more specifically determine its role in the credit crisis that rocked the world in 2008. It will try to justify the statement that, â€Å"Fair value accounting only works in efficient, active and liquid markets. In order to produce information which is relevant and reliable, fair value focuses on market prices.† Due to the financial crisis, fair-value approach for accounting has triggered major debates globally. Among the debaters are the European Commission, USA Congress as well as accounting and banking regulators in the globe. Cynics have it that the financial crisis impacting the whole world in the recent past has been mostly caused by the effects of fair-value accounting. The study is going to determine whether fair value accounting is only applicable in active, efficient and liquid markets. Various arguments will be considered while trying to draw the befitting approach to the issue. The Standards of accounting reports, IFRS and US GAAP, aid in deriving from market prices in various circumstances. However, it is not very clear whether these standards are the origin of the predicaments. The allowing of the managements of organisations to be flexible when it comes to dealing with future value accounting problems leads to the manipulation during such times as those of financial crisis. From the perspective thus the market conditions may impact on fair value accounting. However, according to Laux and Leuz, future value accounting is an approach to the measurement of liabilities and assets in a given company’s balance sheet. FAS’s number 157 definition is that fair value accounting is â€Å"the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date.† Under IFRS fair value has been defined as the sum at which a certain asset and liability could be

Impact of Dams Building in Bellefonte Essay Example | Topics and Well Written Essays - 750 words - 1

Impact of Dams Building in Bellefonte - Essay Example This place holds lots of water as it is connected to a canal which leads to Susquehanna River and ultimately falls into the ocean. Bellefonte is known for its active trade and economics and holds the value of an industrial center in the middle of rural surroundings. Many other dams on same architectural design were built. These dams were not very deep. They were a mere 10-15 feet deep (low head dams) but they powered the industry all through the 19th century. Now on the Spring Creek, only 10-20 of these dams remain. These dams generated water from the spring and had many impacts on the environment and for the economics. For instance; these dams blocked the way for trout. Trout can jump and it’s hard. These dams also trapped sediments and stopped almost all of the sea flow. Another impact of these dams is that they warm up the water through the dam stream. This dam stream slows down the water flow, which gets more heat from the sun. The sun bakes it and the water gets the relatively high temperature and the result is less vegetation and less shade for animals. Due to an elevated temperature of water, the warmer water rises to the surface and fish also remain near the surface whereas the cold water sinks to the bottom. There is also a large ponding area here which affects a larger portion of the stream. The Spring House here is run by an actual spring and lets 8-10 million gallons of water pass through in a day. A chunk of the area has been sold for natural gas drilling and for other manufacturing concern like drinking bottled water. Bellefonte is a water-rich area and has a huge surplus of water. As the area started developing, more and more industries started mushrooming and the place became noisy and dirty. The industries started dumping waste into the stream and disturbed the natural condition of water and caused disgusting contamination in it. But the good thing is that this was the case many years ago.

Global Marketing Plan Research Paper Example | Topics and Well Written Essays - 1750 words

Global Marketing Plan - Research Paper Example How my decisions support the overall goal of growth and expansion? And last but not the least that How would I convince someone with the opposing perspective? In the end I would present my own views to support my decision and findings so far. Global Marketing Plan As I am supposed to present my thoughts regarding the globalization issue for the company, so in my views we should definitely move for globalization of our company. Since, our company has a wide range of clientele in Phoenix and Boston. People already know us here and our company is one of the most renowned furniture selling companies in town. Therefore, we would definitely have to take the opportunity like other companies and try to build the same repute in other locations as well. Moreover, I think we can do much better in other areas of the world as well. Therefore, in my point of view, it is the right time when we should expand our business internationally as well. Main reason behind this decision is to increase the ma rket share of our company. Moreover, if we expand our business in various regions across the globe then it will increase our sales and revenue as well. It will help our company to make its name in more locations, thus creating diversified customer range as well. One more factor to think about globalization is to search for more capable labor source from multiple areas of the world. This diversity will not only give us varied work force but also different minds to think for the benefit of the company in a better way. This is one way we can multiply our profits as well. As far as my rationale behind this decision is concerned, I stated already that globalization is truly good for our company at this moment. I don’t want to wait and let other competitors to take the advantage of this process. We have examples of many companies that have expanded their business to almost every side of the globe such as Coca-Cola, McDonalds, KFC, and so on. All these companies have not only gained lots of popularity around the world but also multiplied their revenues in a well-organized manner. If we lose the opportunity now, then some other company will lead us in this regard and gets all the benefits of globalization prior to us. When it comes to target any specific location then Europe is the best place to aim for. I have suggested Europe because we can gain a wide range of customers and competent workers from that place. Especially from Sweden we can get proficient workers and true furniture lovers from all over the continent. As per my studies people there are fond of good furniture. They like to give their homes a classy and trendy look. They follow trends and if we provide latest and chic styles designs of furniture then we can surely increase our clientele in that area. I have worked out enough to trace the location, where our company should target? The information I gathered using all my efforts, clearly shows that people in that area needs a good job with higher sa laries. We can easily target those areas to give them a good job and hence can upsurge our resources as well. It will also cut down our production cost because the salaries we are paying here in Boston and Phoenix are comparatively higher than the amount we would pay there. Not to compromise on the quality side, I would suggest that instead of making the furniture at other locations, we make them

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To what extent should there be employee voice within the workplace and organisations - Essay Example Employee voice also helps the organizations to increase the overall performance level giving importance to the employees and creating an atmosphere where the employees can feel at home. It also helps to increase productivity and the quality of the products for a particular organization, as the higher authority appraises their employees and engage them to evaluate their performance (Marsden, 2009). Hereby, the prime objective of this study is to highlight the employee voice and its importance in today’s world. This paper would also include the present scenario of employee voice and how it is beneficial to the workplace of various organizations from an in depth view with illustrations. Employee voice is the practice where the employees or the workers have their right to put their opinions and to take part in certain decision-making activities. Employee voice includes employee’s behavior, attitudes, interests and openness among others. It helps an organization to be more stable and constructive which, in turn, leads to the overall development in the organizational productivity. It is worth mentioning in this context that employee voice is the process which enhances the performance of the employees to a specific extent. The employee voice not only includes all the employees, but also involves the various stakeholders related to the organization to effectively improve and manage the arrangements which already exist in the internal business environment. In other words, employee voice is the practice which satisfies the employee needs and assists an organization to implement various strategies with the help of opinions and viewpoints of the employees and manager s. In the present scenario, employee voice has become an integral role or part of the strategic improvement process implemented in organizations to enhance the quality of work and also to improve the relationship among the workers (Holley et al.,

Improving Life in the United States Essay Example | Topics and Well Written Essays - 750 words

Improving Life in the United States - Essay Example The present face of life in the U S, however, reflects the fading effects from repeated burns suffered by the political and economic structure of the country mostly from foreign policies of tariff, trade and international relationships. Continuous demonstrations of strive for political supremacy over different upcoming nations accounted for massive loss to the GDP of the country in the past few decades. Subsequent turns of two different political parties did little favor to the growth of the economy after the severe blow on its economic nerves with the issues like the Wall Street Collapse and the WTC attack. America, the uncrowned emperor of the world nations, has ever since spent a lot more on defense and anti-terrorist activities across the world and made the great efforts to take revenge on apparently poorer and weaker enemies. The resultant picture was the raise of a weakening crack in the strong walls of the country’s promised security of its own individuals for their wea lth and prosperous life. Long years of recession along with European financial crises paved way for debatable levels of inflation and massive unemployment concerns in the U S. Presently, even as the data from various international assessment agencies shows that the country is generally stable; improving life in the U S is a serious challenge before the nationals now. The growing trend of inflation relates to the rapid progress of distance between the rich and the remaining people in the country. Such a scenario is sure to bring home the bad impacts on per capita GDP, life expectancy, status of family and community life, gender ratio at the employment sector and many more. Apart from them, the cultural changes at international levels also add to the adversities at the moment. Therefore, a revival of the entire administrative aspects and political framework is necessary for the renaissance of the nation. When life in the US is seen as the core element for improvement, it should be vie wed from the national and individual angles. The country has to reframe a majority of its foreign policies in order to pacify the cultural and religious disparities at the grass-root level among people. For the US, targeted attacks on the grounds of counter-terrorism operations in different countries may be reduced for saving its amazingly huge proportions of military funding. As a result, the money could instead be used for the uplift of living standards of the poor Native American children and for the promotion of education and health care of its citizens. Smaller nations in the European and Asian continents continue to excel their capabilities of progressive efforts in market capitalization and foreign investment allocations for advancement in business. It is time for the U S to realize the need for new and centralized economic policies for the reimbursement of its faith in the global market. As constancy in investment-allotment ratio is the index of economic stability, the gover nment of the US should amend plans for attracting more foreign investors. Thus, the country can avoid rigid actions of immigration cut-shorts and imposition of political

Psychological Testing and Assessment Paper Essay - 1

Psychological Testing and Assessment Paper - Essay Example Psychological tests are important in the entire field of psychology and human behavior including counseling, family therapy and marriage. In counseling, a counselor may use psychological testing in interviewing clients to understand hidden yet crucial information that can aid in the effective treatment of the given client. Testing can also help a counselor observe behaviors of a client and assist in devising of techniques to absolve imminent challenges or problems faced. In family therapy, therapists can use psychological tests to administer questionnaires to the members of the troubled family. In addition, a therapist can use psychological tests to explore interests and attitudes of each family member usually through direct interaction, and identify dysfunctional elements resulting instability in the family (Cohen, Swerdlik & Sturnam, 2013). Marriage counselors can also make use of psychology tests in executing their functions. Counselors can use the test to determine values of the individual partners by simply observing behaviors of the partners during interaction. With psychological tests, marriage counselors are able to interview couples about the challenges they have realized in the marriage and efforts attempted to stabilize

Improving Life in the United States Essay Example | Topics and Well Written Essays - 750 words

Improving Life in the United States - Essay Example The present face of life in the U S, however, reflects the fading effects from repeated burns suffered by the political and economic structure of the country mostly from foreign policies of tariff, trade and international relationships. Continuous demonstrations of strive for political supremacy over different upcoming nations accounted for massive loss to the GDP of the country in the past few decades. Subsequent turns of two different political parties did little favor to the growth of the economy after the severe blow on its economic nerves with the issues like the Wall Street Collapse and the WTC attack. America, the uncrowned emperor of the world nations, has ever since spent a lot more on defense and anti-terrorist activities across the world and made the great efforts to take revenge on apparently poorer and weaker enemies. The resultant picture was the raise of a weakening crack in the strong walls of the country’s promised security of its own individuals for their wea lth and prosperous life. Long years of recession along with European financial crises paved way for debatable levels of inflation and massive unemployment concerns in the U S. Presently, even as the data from various international assessment agencies shows that the country is generally stable; improving life in the U S is a serious challenge before the nationals now. The growing trend of inflation relates to the rapid progress of distance between the rich and the remaining people in the country. Such a scenario is sure to bring home the bad impacts on per capita GDP, life expectancy, status of family and community life, gender ratio at the employment sector and many more. Apart from them, the cultural changes at international levels also add to the adversities at the moment. Therefore, a revival of the entire administrative aspects and political framework is necessary for the renaissance of the nation. When life in the US is seen as the core element for improvement, it should be vie wed from the national and individual angles. The country has to reframe a majority of its foreign policies in order to pacify the cultural and religious disparities at the grass-root level among people. For the US, targeted attacks on the grounds of counter-terrorism operations in different countries may be reduced for saving its amazingly huge proportions of military funding. As a result, the money could instead be used for the uplift of living standards of the poor Native American children and for the promotion of education and health care of its citizens. Smaller nations in the European and Asian continents continue to excel their capabilities of progressive efforts in market capitalization and foreign investment allocations for advancement in business. It is time for the U S to realize the need for new and centralized economic policies for the reimbursement of its faith in the global market. As constancy in investment-allotment ratio is the index of economic stability, the gover nment of the US should amend plans for attracting more foreign investors. Thus, the country can avoid rigid actions of immigration cut-shorts and imposition of political

Lai Bahadur Shastri Essay Example for Free

Lai Bahadur Shastri Essay Childhood is the most innocent phase in human life. It is that stage of life when the human foundations are laid for a successful adult life. Many children, instead of spending it in a carefree and fun-loving manner while learning and playing, are scarred and tormented. They hate their childhood and would do anything to get out of the dungeons of being children and controlled and tortured by others. They would love to break-free from this world, but continue to be where they are, not out of choice, but force. This is the true story of child labor. Innocent children are employed by industries and individuals who put them to work under grueling circumstances. They are made to work for long hours in dangerous factory units and sometimes made to carry load even heavier than their own body weight. Then there are individual households that hire children as domestic help and beat and physically torture them when they make a mistake. The children are at times made to starve and are given worn out clothes to wear. Such is the story of millions of children in India painful and yet true. The two primary reasons for the ever-growing social malice of child labor are poverty and lack of education. Poor parents give birth to children thinking them as money-making machines. They carry infants to earn more on the streets from begging. Then as they grow they make them beggars, and eventually sell them to employers. This malady is rampant across the length and breadth of India. The status of the girl child is the key to achieving women’s equality and dignity which is, in many ways, a litmus test of the maturity of a society. Girls are to be the future mothers besides future policy makers and leaders. The importance of women hardly needs emphasis. Woman is the mother of race and is the liaison between the generations. Our culture attaches much importance to women, therefore, India has been symbolized as ‘MOTHER INDIA’. Jawaharlal Nehru once said, â€Å"To awaken the people it is the women who must bye awakened. Once she is on the move the family moves, the village moves, the nation moves.† But we see girls facing discrimination everywhere, in each corner of the world. Now-a-days corruption can be seen everywhere. It is like cancer in public life, which has not become so rampant and perpetuated overnight, but in course of time. A country where leaders like Mahatma Gandhi, Sardar Patel, Lai Bahadur Shastri and Kamraj have taken birth and led a value-based is now facing the problem of corruption. When we talk of corruption in public life, it covers  corruption in politics, state governments, central governments, business, industry and so on. Public dealing counters in most all government offices are the places where corruption most evident. If anybody does not pay for the work it is sure work wont be done. People have grown insatiable appetite for money in them and they can go to any extent t o get money. Undoubtedly they talk of morality and the importance of value-based life but that is for outer show. Their inner voice is something else. It is always crying for money. It has been seen the officers who are deputed to look into the matters of corruption turn out to be corrupt. Our leaders too are not less corrupt. Thus the network of corruption goes on as usual and remains undeterred. Corruption is seen even in the recruitment department where appointments are ensured through reliable middle agencies. Nexus between politicians and bureaucrats works in a very sophisticated manner. Nexus does also exist between criminals and police. A total war against these and a few other evils like drinking and smoking is of utmost necessity. There is legislation against these evils but they can be effectively checked only if the people decide to check them.

Electric Filed Strength And Electric Flux Density

Electric Filed Strength And Electric Flux Density All bodies are made up of atoms, which consist of a nucleus containing protons (+ve) and neutrons (neutral) and surrounding the nucleus are orbiting electrons (-ve). When a body is uncharged it is electrically neutral, it has the same negative charge as positive charge. If a conductor had a deficit of electrons it would exhibit a net positive charge and if it was to have a surplus of electrons it would exhibit a net negative charge (remember the previous study of the atom reference +ve/-ve ions). An imbalance in charge can be produced by friction (removing or depositing electrons using materials such as silk and fur, respectively) or induction (by attracting or repelling electrons using a second body which is, respectively, positively or negatively charged). Coulombs Law states that if charged bodies exist at two points, the force of attraction (if the charges are of opposite polarity) or repulsion (if the charges have the same polarity) will be proportional to the product of the magnitude of the charges divided by the square of their distance apart. Thus: + + + Direct Inverse Proportionality Maths Q1 and Q2 are the charges present at the two points (in Coulombs), d is the distance separating the two points (in metres), F is the force (in Newtons), and k is a mathematical constant depending upon the medium in which the charges exist. In a vacuum or free space, ÃŽÂ µ0 is the permittivity of free space (8.854 x 10-12 F/m Farad per meter). The force exerted on a charged particle is a manifestation of the existence of an electric field. The electric field defines the direction and magnitude of a force on a charged object. The field itself is invisible to the human eye but can be drawn by constructing lines which indicate the motion of a free positive charge within the field; the number of field lines in a particular region being used to indicate the relative strength of the field at the point in question. The figure above shows the electric fields between charges of the same and opposite polarity. The figure below shows the field which exists between two charged parallel plates. B A As illustrated above, plates A and B are doped and charged to different potentials. If an electron that has a negative charge is placed between the plates, a force will act on the electron tending to push it away from the negative plate B and towards the positive plate A. Similarly, a positive charge would be acted on by a force tending to move it toward the negative plate. The region between the plates in which an electric charge experiences a force, is called an electrostatic field. The direction of the field is defined by the force acting on a positive charge placed in the field, i.e. the direction of the force is from the positive plate to the negative plate. Such a field may be represented in magnitude and direction by lines of electric force drawn between the charged surfaces. The closeness of the lines is an indication of the field strength. Whenever a p.d. is established between two points, an electric field will always exist. The figure above shows two parallel conducting plates separated from each other by air, and are connected to opposite terminals of a battery of voltage V volts. There is therefore an electric field in the space between the plates. If the plates are close together, the electric lines of force will be straight and parallel and equally spaced, except near the edge where fringing will occur (see previous figure). Over the area in which there is negligible fringing, E is the electric field strength (V/m), V is the applied potential difference across the parallel plates (V) and d is the distance (m). **Note: Electric Field Strength is also called Potential/Voltage Gradient. A unit electric flux is defined as emanating from a positive charge of 1 coulomb. Thus electric flux à Ã‹â€  is measured in coulombs, and for a charge of Q coulombs, the electric flux à Ã‹â€  is equal to Q coulombs. Electric flux density D is the amount of flux passing through a defined area A that is perpendicular to the direction of the flux: à Ã‹â€  is the electric flux measured in coulombs, Q is the electric charge also measured in coulombs, and A is the area in m2 over which the flux is distributed. Problem 1: Two parallel rectangular plates measuring 20cm by 40cm carry an electric charge of 0.2  µC. (a) Calculate the electric  ¬Ã¢â‚¬Å¡ux density. (b) If the plates are spaced 5mm apart and the voltage between them is 0.25 kV determine the electric field strength. Solution 1: PERMITTIVITY At any point in an electric field, the electric field strength E maintains the electric flux and produces a particular value of electric flux density D at that point. For a field established in vacuum (or for practical purposes in air), the ratio D/E is a constant ÃŽÂ µ0, i.e. ÃŽÂ µ0 is called the permittivity of free space or the free space constant. The value of ÃŽÂ µ0 is 8.854 x 10-12 F/m Farad per meter. When a dielectric (i.e. insulating medium separating charged surfaces), such as mica, paper, plastic or ceramic is introduced into the region of an electric field, the ratio of D/E is modified. ÃŽÂ µr is called the relative permittivity of the insulating material and indicates its insulating power compared with that of vacuum. ÃŽÂ µr has no units and typical properties of some common insulating dielectric materials are shown below. The product of ÃŽÂ µ0 ÃŽÂ µr is called the absolute permittivity, ÃŽÂ µ, i.e. As discussed earlier, the dielectric is an insulating medium separating charged surfaces and has the property of very high resistivity. They are therefore used to separate conductors at different potentials, such as capacitor plates or electric power lines. The dielectric strength of an insulating dielectric is the maximum electric field strength that can safely be applied to it before breakdown (conduction) occurs. The amount of charge produced for a given applied voltage on the two parallel plates shown earlier will depend not only on the physical dimensions but also on the insulating dielectric material that appears between the plates. Such materials need to have a very high value of resistivity (i.e. they must not conduct charge) coupled with an ability to withstand high voltages without breaking down. A more practical arrangement of parallel plates with an insulating dielectric material is shown. In this arrangement the ratio of charge, Q, to the potential difference, V, is given by the following relationship. A = area of one on the plates, in m2 D = thickness of the dielectric in m ÃŽÂ µ = absolute permittivity of the dielectric material *Later learning, i.e. the parallel plate capacitor/capacitance and physical dimensions. à ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦ single pair of plates à ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦ arrangement of n plates Problem 1: The  ¬Ã¢â‚¬Å¡ux density between two plates separated by mica of relative permittivity 5 is 2 µC/m2. Find the voltage gradient between the plates. Solution 1: Problem 2: Two parallel plates having a p.d. of 200V between them are spaced 0.8mm apart. What is the electric  ¬Ã‚ eld strength? Find also the electric  ¬Ã¢â‚¬Å¡ux density when the dielectric between the plates is (a) air, and (b) polythene of relative permittivity 2.3 Solution 2: SELF ASSESSMENT (1-2) NOTE: Where appropriate take ÃŽÂ µ0 as 8.85 x 10-12 F/m A capacitor uses a dielectric 0.04mm thick and operates at 30V. What is the electric field strength across the dielectric at this voltage? [Answer: 750kV/m] A two-plate capacitor has a charge of 25C. If the effective area of each plate is 5cm2 determine the electric  ¬Ã¢â‚¬Å¡ux density of the electric field. [Answer: 50 kC/m2] A charge of 1.5 µC is carried on two parallel rectangular plates each measuring 60mm by 80mm. (a) Calculate the electric  ¬Ã¢â‚¬Å¡ux density. (b) If the plates are spaced 10mm apart and the voltage between them is 0.5kV determine the electric  ¬Ã‚ eld strength. [Answer: (a) 312.5 µC/m2, (b) 50kV/m] Two parallel plates are separated by a dielectric and charged with 10 µC. Given that the area of each plate is 50cm2, calculate the electric  ¬Ã¢â‚¬Å¡ux density in the dielectric separating the plates. [Answer: 2mC/m2] The electric  ¬Ã¢â‚¬Å¡ux density between two plates separated by polystyrene of relative permittivity 2.5 is 5 µC/m2. Find the voltage gradient between the plates. [Answer: 226kV/m] Two parallel plates having a p.d. of 250V between them are spaced 1mm apart. (a) Determine the electric  ¬Ã‚ eld strength. (b) Find also the electric  ¬Ã¢â‚¬Å¡ux density when the dielectric between the plates is (i) air and (ii) mica of relative permittivity 5. [Answer: (a) 250kV/m (bi) 2.213 µC/m2 (bii) 11.063 µC/m2] CAPACITORS CAPACITANCE A capacitor is a device for storing electric charge. In effect, it is a reservoir into which charge can be deposited and then later extracted. In its simplest form a capacitor consists of two parallel metal plates which are separated by an insulating material known as a dielectric. C:Documents and SettingsHarveyMy DocumentsMy PicturesPicturePicture 028.jpg Because of the dielectric, current cannot flow from one plate to the other. When the capacitor is connected to a dc source, electrons accumulate on the plate connected to the negative supply terminal. The negative charge repels electrons from the atoms of the other plate. These electrons flow away to the positive terminal of the dc source; this leaves the plate positively charged. C:Documents and SettingsHarveyMy DocumentsMy PicturesPicturePicture 032.jpg If the capacitor is disconnected from the supply, the charges remain. The capacitor stores the electric charge indefinitely. The symbols for a fixed capacitor and a variable capacitor used in electrical circuit diagrams are shown below. Typical applications include reservoir and smoothing capacitors for use in power supplies, coupling a.c. signals between the stages of amplifiers, and decoupling supply rails (i.e. effectively grounding the supply rails as far as a.c. signals are concerned). The following figures illustrate what happens to a capacitor when it is charging and discharging. If the switch is left open (position A), no charge will appear on the plates and in this condition there will be no electric field in the space between the plates nor will there be any charge stored in the capacitor. When the switch is moved to position B, electrons will be attracted from the positive plate to the positive terminal of the battery. At the same time, a similar number of electrons will move from the negative terminal of the battery to the negative plate. This sudden movement of electrons will manifest itself in a momentary surge of current (conventional current will flow from the positive terminal of the battery towards the positive terminal of the capacitor). Eventually, enough electrons will have moved to make the e.m.f. between the plates the same as that of the battery. In this state, the capacitor is said to be fully charged and an electric field will be present in the space between the two plates. If, at some later time the switch is moved back to position A, the positive plate will be left with a deficiency of electrons whilst the negative plate will be left with a surplus of electrons. Furthermore, since there is no path for current to flow between the two plates the capacitor will remain charged and a potential difference will be maintained between the plates. Now assume that the switch is moved to position C. The excess electrons on the negative plate will flow through the resistor to the positive plate until a neutral state once again exists (i.e. until there is no excess charge on either plate). In this state the capacitor is said to be fully discharged and the electric field between the plates will rapidly collapse. The movement of electrons during the discharging of the capacitor will again result in a momentary surge of current (current will flow from the positive terminal of the capacitor and into the resistor). The figure below shows the direction of current flow during charging (i.e. the switch in position B) and discharging (i.e. the switch in position C). It should be noted that current flows momentarily in both circuits even though you may think that the circuit is broken by the gap between the capacitor plates! The charge Q (in coulombs) stored in a capacitor is given by: I is the current in amperes and t is the time in seconds. Charge Q on a capacitor is proportional to the applied voltage V, i.e. Q V. Direct Inverse Proportionality Maths Q = CV The constant of proportionality C is the capacitance. The unit of capacitance C is the farad F (or more usually  µF =10-6F or pF =10-12F), and is defined as the capacitance when a p.d. of one volt appears across the plates when charged with one coulomb. Capacitance is the ability of a circuit or object (i.e. in this case a capacitor) to store electric charge. Problem 1: (a) Determine the p.d. across a 4  µF capacitor when charged with 5 mC (b) Find the charge on a 50 pF capacitor when the voltage applied to it is 2 kV. Solution 1: Problem 2: A direct current of 4A flows into a previously uncharged 20  µF capacitor for 3 ms. Determine the p.d. between the plates. Solution 2: Problem 3: A 5 µF capacitor is charged so that the p.d. between its plates is 800V. Calculate how long the capacitor can provide an average discharge current of 2 mA. Solution 3: SELF ASSESSMENT (3) Find the charge on a 10  µF capacitor when the applied voltage is 250 V. (Answer: 2.5 mC) Determine the voltage across a 1000à Ã‚ F capacitor to charge it with 2  µC. (Answer: 2 kV) The charge on the plates of a capacitor is 6 mC when the potential between them is 2.4 kV. Determine the capacitance of the capacitor. (Answer: 2.5  µF) For how long must a charging current of 2 A be fed to a 5  µF capacitor to raise the p.d. between its plates by 500V. (Answer: 1.25 ms) A direct current of 10 A flows into a previously uncharged 5  µF capacitor for 1 ms. Determine the p.d. between the plates. (Answer: 2 kV) A 16  µF capacitor is charged at a constant current of 4  µA for 2 minutes. Determine the final p.d. across the capacitor and the corresponding charge in coulombs. (Answer: 30V, 480  µC) A steady current of 10 A flows into a previously uncharged capacitor for 1.5 ms when the p.d. between the plates is 2 kV. Find the capacitance of the capacitor. (Answer: 7.5 µF) CAPACITANCE AND PHYSICAL DIMENSIONS (Conventional Parallel Plate Capacitor) The capacitance of a capacitor depends upon the physical dimensions of the capacitor (i.e. the size of the plates and the separation between them) and the dielectric material between the plates. The capacitance of a conventional parallel plate capacitor is given by: Where, C = Capacitance, unit of measure farads (F) ÃŽÂ µ0 = Permittivity of free space or the free space constant (8.85 x 10-12 F/m) ÃŽÂ µr = Relative permittivity of the dielectric medium between the plates (ÃŽÂ µr has no units as it is a ratio of density material/vacuum) A = Area of one of the plates (m2) d = Thickness of the dielectric or separation between the plates (m) In order to increase the capacitance of a capacitor, many practical components employ multiple plates as shown. Ten plates are shown, forming nine capacitors with a capacitance nine times that of one pair of plates. Such an arrangement has n plates then capacitance C à ¢Ã‹â€ Ã‚  (n -1). Thus capacitance is then given by: Problem 1: A ceramic capacitor has an effective plate area of 4cm2 and separated by 0.1 mm of ceramic of relative permittivity 100. Calculate the capacitance of the capacitor in picofarads (à Ã‚ F). If the capacitor in part (a) is given a charge of 1.2 µC what will be the p.d. between the plates? Solution 1: Problem 2: A waxed paper capacitor has two parallel plates, each of effective area 800 cm2. If the capacitance of the capacitor is 4425 pF determine the effective thickness of the paper if its relative permittivity is 2.5. Solution 2: Problem 3: A parallel plate capacitor has nineteen interleaved plates each 75 mm by 75 mm and separated by mica sheets 0.2 mm thick. Assuming that the relative permittivity of the mica is 5, calculate the capacitance of the capacitor. Solution 3: n = 19, thus (n 1) = 18 A = 75 x 75 = 5625mm2 ÃŽÂ µr = 5, ÃŽÂ µ0 = 8.85 x 10-12 F/m d = 0.2mm = 0.2 x 10-3m SELF ASSESSMENT (4) ** Where appropriate take ÃŽÂ µ0 as 8.85 x 10-12 F/m. A capacitor consists of two parallel plates each of area 0.01 m2, spaced 0.1 mm in air. Calculate the capacitance in picofarads (pF). [Answer: 885 pF] A waxed paper capacitor has two parallel plates, each of effective area 0.2m2. If the capacitance is 4000 pF determine the effective thickness of the paper if its relative permittivity is 2. [Answer: 0.885 mm] Calculate the capacitance of a parallel plate capacitor having 5 plates, each 30 mm by 20 mm and separated by a dielectric 0.75 mm thick having a relative permittivity of 2.3. [Answer: 65.14 pF] How many plates does a parallel plate capacitor have if its capacitance is 5nF, each plate is 40mm by 40mm and each dielectric is 0.102mm thick with a relative permittivity of 6? [Answer: 7] A parallel plate capacitor is made from 25 plates, each 70mm by 120mm interleaved with mica of relative permittivity 5. If the capacitance of the capacitor is 3000pF determine the thickness of the mica sheet. [Answer: 2.97mm] The capacitance of a parallel plate capacitor is 1000pF. It has 19 plates, each 50mm by 30mm separated by a dielectric of thickness 0.40mm. Determine the relative permittivity of the dielectric. [Answer: 1.67] CAPACITORS CONNECTED IN PARALLEL AND SERIES CAPACITORS CONNECTED IN PARALLEL The figure above shows three capacitors, C1, C2 and C3 connected in parallel with a supply voltage V applied across the arrangement. (Note: just like resistors in parallel, the supply voltage V is the same across each parallel capacitor) V = V1 = V2 = V3 When the charging current I reaches point A it divides, some flowing into C1, some flowing into C2 and some into C3. Hence the total charge QT (i.e. QT= I x t) is divided between the three capacitors. The capacitors each store a charge and these are shown as Q1, Q2 and Q3 respectively. Hence, But, QT=CV (where C is the total equivalent circuit capacitance) And, Q1=C1V Q2=C2V Q3=C3V Therefore, CV = C1V + C2V + C3V (where C is the total equivalent circuit capacitance) Dividing throughout by the common V giving, C = C1 + C2 + C3 à ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬Ã‚ ¦. + Cn The equivalent capacitance of a group of parallel connected capacitors is the sum of the capacitances of the individual capacitors. CAPACITORS CONNECTED IN SERIES The figure above shows three capacitors, C1, C2 and C3 connected in series across a supply voltage V. Let the p.d. across the individual capacitors be V1, V2 and V3 respectively as shown. Let the charge on the plate a of the capacitor C1 be +Q coulombs. This induces and equal but opposite charge of -Q coulombs on plate b. The conductor between plates b and c is electrically isolated from the rest of the circuit so that an equal but opposite charge of +Q coulombs must appear on plate c, which, in turn, induces an equal and opposite charge of -Q coulombs on plate d, and so on. Hence when capacitors are connected in series the charge on each is the same. QT = Q1 = Q2 = Q3 In a series circuit: V = V1 + V2 + V3 (Similar to resistors in series) Since, then (where C is the total equivalent circuit capacitance) Dividing throughout by the common Q giving, (Where C is the total equivalent circuit capacitance) For series connected capacitors, the reciprocal of the equivalent capacitance is equal to the sum of the reciprocals of the individual capacitance. For special case of two capacitors in series, Hence, i.e. Problem 1: Calculate the equivalent capacitance of two capacitors of 6ÃŽÂ ¼F and 4ÃŽÂ ¼F connected in (a) Parallel (b) Series. Solution 1: Problem 2: What capacitance must be connected in series with a 30ÃŽÂ ¼F capacitor for the equivalent capacitance to be 12ÃŽÂ ¼F? Solution 2: Problem 3: Capacitances of 1ÃŽÂ ¼F, 3ÃŽÂ ¼F, 5ÃŽÂ ¼F and 6ÃŽÂ ¼F are connected in parallel to a direct voltage supply of 100V. Determine (a) the equivalent circuit capacitance, (b) the total charge and (c) the charge on each capacitor. Solution 3: Problem 4: Capacitances of 3ÃŽÂ ¼F, 6ÃŽÂ ¼F and 12ÃŽÂ ¼F are connected in series across a 350V supply. Calculate (a) the equivalent circuit capacitance, (b) the charge on each capacitor, and (c) the p.d. across each capacitor. Solution 4: Problem 5: For the arrangement shown, find (a) the equivalent capacitance of the circuit, (b) the voltage across QR and (c) The charge on each capacitor. Solution 5: SELF ASSESSMENT (5) Capacitors of 2 µF and 6 µF are connected (a) in parallel and (b) in series. Determine the equivalent capacitance in each case. [Answers: (a) 8ÃŽÂ ¼F (b) 1.5ÃŽÂ ¼F] Find the capacitance to be connected in series with a 10 µF capacitor for the equivalent capacitance to be 6 µF. [Answer: 15ÃŽÂ ¼F] What value of capacitance would be obtained if capacitors of 0.15 µF and 0.10 µF are connected in (a) series and (b) parallel? [Answers: (a) 0.06ÃŽÂ ¼F (b) 0.25ÃŽÂ ¼F] Two 6 µF capacitors are connected in series with one having a capacitance of 12 µF. Find the total equivalent circuit capacitance. What capacitance must be added in series to obtain a capacitance of 1.2 µF? [Answers: (a) 2.4ÃŽÂ ¼F (b) 2.4ÃŽÂ ¼F] For the arrangement shown below, find (a) the equivalent circuit capacitance and (b) the voltage across a 4.5ÃŽÂ ¼F capacitor. [Answers: (a) 1.2ÃŽÂ ¼F (b) 100V] Three 12 µF capacitors are connected in series across a 750V supply. Calculate (a) the equivalent capacitance, (b) the charge on each capacitor and (c) the p.d. across each capacitor. [Answers: (a) 4 µF (b) 3mC (c) 250V] If two capacitors having capacitances of 3 µF and 5 µF respectively are connected in series across a 240V supply, determine (a) the p.d. across each capacitor and (b) the charge on each capacitor. [Answers: (a) 150V, 90V (b) 0.45 mC on each] Capacitances of 4 µF, 8 µF and 16 µF are connected in parallel across a 200V supply. Determine (a) the equivalent capacitance, (b) the total charge and (c) the charge on each capacitor. [Answers: (a) 28  µF (b) 5.6mC (c) 0.8mC, 1.6mC, 3.2mC] DIELECTRIC STRENGTH The maximum safe working voltage is the maximum voltage that can be applied to the terminals of a capacitor without causing damage to the capacitor. The manufacturer specifies this voltage. The limit is necessary so that the field strength in the dielectric does not exceed a value that would cause the dielectric to breakdown and loose its insulating properties. The figure quoted by the manufacturer for a capacitor is also known as the dielectric strength and will be in volts per metre. E is the dielectric strength (V/m), V is the applied potential difference across the parallel plates (V) and d is the distance (m). **Note: Equation identical to Electric Field Strength (Potential/Voltage Gradient). Problem1: A capacitor is to be constructed so that its capacitance is 0.2 µF and to take a p.d. of 1.25kV across its terminals. The dielectric is to be mica and has a dielectric strength of 50MV/m. Find (a) the thickness of the mica needed, and (b) the area of a plate assuming a two-plate construction. (Assume ÃŽÂ µr for mica to be 6). Solution 1: ENERGY STORED IN CAPACITORS The energy, W, stored by a capacitor is given by, Where, W is the energy (in Joules), C is the capacitance (in Farads), and V is the potential difference (in Volts). Problem 1: (a) Determine the energy stored in a 3 µF capacitor when charged to 400V. (b) Find also the average power developed if this energy is dissipated in a time of 10 µs. Solution 1: Problem 2: A 12 µF capacitor is required to store 4J of energy. Find the p.d. to which the capacitor must be charged. Solution 2: Problem 3: A capacitor is charged with 10mC. If the energy stored is 1.2J, determine (a) the voltage and (b) the capacitance. Solution 3: SELF ASSESSMENT (6) ** Where appropriate take ÃŽÂ µ0 as 8.85 x 10-12 F/m. When a capacitor is connected across a 200V supply the charge is 4 µC. Find (a) the capacitance and (b) the energy stored. [Answer: (a) 0.02 µF (b) 0.4mJ] Find the energy stored in a 10 µF capacitor when charged to 2kV. [Answer: 20 J] A 3300pF capacitor is required to store 0.5mJ of energy. Find the p.d. to which the capacitor must be charged. [Answer: 550 V] A capacitor is charged with 8mC. If the energy stored is 0.4J, determine (a) the voltage and (b) the capacitance. [Answer: (a) 100V (b) 80  µF] A capacitor, consisting of two metal plates each of area 50 cm2 and spaced 0.2mm apart in air, is connected across a 120V supply. Calculate (a) the energy stored (b) the electric  ¬Ã¢â‚¬Å¡ux density and (c) the potential gradient (i.e. electric field strength). [Answer: (a) 1.593 µJ (b) 5.31 µC/m2 (c) 600kV/m] D.C TRANSIENTS Networks of capacitors and resistors (known as C-R circuits) form the basis of many timing and pulse shaping circuits and are thus often found in practical electronic circuits. When a d.c. voltage is applied to a capacitor C and resistor R connected in series, there is a short period of time immediately after when the voltage is connected that the current flowing in the circuit and voltages across C and R are changing. These changing values are called transients. CHARGING A CAPACITOR The figure above shows a series connected C-R circuit. When the switch S is closed, then by Kirchhoffs valotage law: V = Vc + VR The battery voltage V is constant. The capacitor voltage Vc is given by, The voltage drop across R (i.e. VR) is given by, Hence at all times: At the instant of closing S (i.e. initial circuit condition), assuming there is no initial charge on the capacitor, Q is zero (i.e. Q0), hence Vc is zero (i.e. VC0). (Note: From equation Vc = Q / C). Thus from equation V = Vc + VR, V = 0 + VR (i.e. V = VR = IR) A short time later at time T1 seconds after closing S, the capacitor is partly charged to, say, Q1 coulombs because current has been flowing. The voltage VC1 is now, If the current flowing is I1 amperes, then the voltage drop across R has fallen to VR1 = I1R volts. Thus from equation V = Vc + VR A short time later still, say at time T2 seconds after closing S, the charge has increased to Q2 coulombs and VC has increased to, Since V = VC + VR and V is a constant, then VR decreases to I2R. Thus VC is increasing and I and VR are decreasing as time increases. Ultimately, a few seconds after closing S (i.e. at the final or steady state condition), the capacitor is fully charged to, say Q coulombs, current no longer flows, i.e. I = 0, and hence VR = IR = 0. It follows from equation V = Vc + VR that V = VC. Curves showing the changes in VC, VR and I with time are shown below. The curve showing the variation of VC with time is called an exponential growth curve and the graph is called the capacitor voltage / time characteristic. The curves showing variations of VR and I with time are called exponential decay curves, and the graphs are called resistor voltage / time and current / time characteristics respectively. The name exponential shows that the shape can be expressed mathematically by an exponential mathematical equation, as shown below. Growth of capacitor voltage, Decay of resistor voltage, Decay of resistor current, TIME CONSTANT (à Ã¢â‚¬Å¾ TAU) FOR A C-R CIRCUIT As shown earlier, if a constant d.c. voltage is applied to a series connected C-R circuit, a exponential transient growth curve of capacitor voltage VC results as shown below. With reference to the figure below, the constant voltage supply is replaced by a variable voltage supply at time t1 seconds. The voltage is varied so that the current flowing in the circuit is constant. Since the current flowing is a constant, the curve will follow a tangent, AB, drawn to the curve at point A. Let the capacitor voltage VC reach its final value of V at time t2 seconds. The time corresponding to (t2-t1) seconds is called the time constant of the circuit, denoted by the Greek letter tau, à Ã¢â‚¬Å¾. The value of the time constant is CR seconds, i.e. for a series connected C-R circuit, (seconds) Where C is capacitance (F), R is the resistance (à ¢Ã¢â‚¬Å¾Ã‚ ¦) and à Ã¢â‚¬Å¾ is the time constant (s) DISCHARGING A CAPACITOR When a capacitor is charged (i.e. with the switch in position A), and the switch is then moved to position B, the electrons stored in the capacitor keep the current flowing for a short time. Initially, at the instant of moving from A to B, the current flow is such that the capacitor voltage VC is balanced by equal and opposite voltage (Kirchhoffs 2nd law), i.e. VC = VR = IR. Finally the transients decay exponentially as current is reduced to zero, i.e. VC = VR = 0. The transient curve representing the voltages and current are shown below. The equations representing the transient curves during discharge period of a series connected C-R circuit are: Decay of voltage, Decay of current, When a capacitor has been disconnected from the supply it may still be charged and it may retain this charge for some considerable time. Thus precautions must be taken to ensure that the capacitor is automatically discharged after the supply is switched off. This is done by connecting a high value resistor across the capacitor terminals. Problem 1: A capacitor is charg