semiconductors essays

semiconductors essays The Best type of conductors have only one valence electron. Examples of these types of conductors are silver, copper, and gold. The best type of insulators have 8 electrons. A semiconductor is an element with electrical properties between both those of a conductor and those of an insulator. Semiconductors have four valence electrons. Germanium was the only element used to make semiconductor years ago. However, excessive reverse current was unable to be figured out by engineers which eventually lead them to becoming obsolete in electronics today. The main semiconductor used today is silicon, which is the second most abundant element on the earth besides oxygen. Without silicon, the world we live in today would be completely different. For silicon is used in every computer system, telecommunication system, etc. in the world. The ability to increase the conductivity of a semiconductor is called doping. Doping a semiconductor is called an extrinsic semiconductor. There are two types of extrinsic semiconductors. The n-type semiconductor and the p-type semiconductor. When the n-type is connected to the negative source and the p-type is connected to the positive source this creates forward bias. When there is forward bias the current conducts easily. For example on the diode curve in experiment number 1. If the source voltage is greater than .7V, a silicon diode allows a continuous flow of current in a forward direction. (See Figure 1.) If you would switch the DC source around you would get reverse bias. When there is reverse bias there is a surface leakage. The current barely conducts and is approximately zero in a silicon diode. ...

Description of Assessment Requirements 1 Description Students are Assignment

Description of Assessment Requirements 1 Description Students are required to fully describe 10 Key concepts of accounti - Assignment Example International Accounting Standards (IAS) no. 1 states that the concepts guide the how the contents of the financial accounting reports should be constructed. The conceptual framework of accounting includes the objectives concepts of financial reporting group. The second group of concept accounting concepts represents the qualitative characteristics of useful financial information. The third group of conceptual accounting framework concepts includes description, recognition and measurement concepts of the financial reports’ elements (Alexander, 2008). Discussion In terms of the first objective accounting concept, the financial reports are prepared in order to present the financial data pertaining to the business entities’ periodic transactions. Consequently, the financial statement preparers implement the going concern accounting concept. The concept indicates that business entity is assumed to continue its business operations for several years, without any telltale sign s of bankruptcy creeping into the doors of the business entity. When bankruptcy issues crop up, the going concern concept no longer applies to the business entity. The going concern concept indicates the entity has no plans of folding up or liquidating the business operations within the foreseeable future (Kieso et al., 2011). Relevance Accounting Concept . In terms of the qualitative characteristics group of financial concepts, the financial report accounts should comply with the relevance concept of financial accounting (Kolitz, 2009). Relevance means that financial data reported is material to the decision making process. The relevant financial data can significantly influence the decision makers’ choices. To be relevant, the financial data should comply with the materiality principle of financial accounting. The financial information is material if the data can change the decision makers’ choices. For example, the manager gathers data on whether to promote the cash ier to treasury department manager. Information indicating that the cashiers incurred several cash count shortages may prod the managers to reject the proposal to promote the cashier. Completeness Accounting Concept. Further, the financial reports must comply with the completeness concept of accounting. The completeness concept requires the companies to record all transactions in their respective accounting periods. The income statement must present all sales done within the accounting period. The same statement requires that all expenses should be recorded in the year they are used, not during the year when the expense amounts are paid. The company must include all business transactions in the preparation of the financial reports to avoid being charged for fraud or lackluster financial report preparation. Neutral Accounting Concept. Furthermore, the financial reports must implement the neutral concept to f accounting (Morris, 2009). The financial reports serve the needs of several users. The customers use the financial reports to determine if the company will continue to operate for several years. The financial report indicating the company generated a four your net loss amount will impress on the current and future customers that the company is on the verge of bankruptcy. Consequently, the company may be forced to close shop within the next few years of business operations. When this happens, the current and future customers are forced to seek other suppliers of their needs and wants. The customers need neutral financial reports for

B2B Marketing Strategy Essay Example | Topics and Well Written Essays - 750 words

B2B Marketing Strategy - Essay Example Also, there should be a target of assigning the necessary resources to the segments that are being profitable. This strategy might not be immediately very profitable, as there will probably be some more inherent costs, even though some profit is expected, which will help in the company's actual financial situation. It is essential to start thinking about producing and marketing new products with the same characteristics which the actual consumers need. The products that the customers want to be on the market should be concentrated on, rather than continuing to offer the same customized products. I have learned from this simulation that in order to create demand, there has to be adequate investment in hiring of sales offices, web centers, customer service, promotions and advertising. I feel that for better profitability, there must be good relations with suppliers and customers. "Effective change requires reinforcing new behaviors, attitudes and organizational practices" (Kreitner & Kinicki, 2004). Also, having the right products, in the exact moment seems to require quite some time, and I think this is another important issue to be considered. When an organisation has produced the right product or services, they would want to deliver it according to current products and happenings in the actual market, and also according to what the competition is doing. I think it is important for the company to examine what the priorities are, and to review the currently established brand service prices. Effectiveness of Strategy According to Kreitner and Kinicki, there are three stages in this strategy or model of planned change, and this strategy is instrumental in initiating, managing and stabilizing the change process. The three stages of planned change are unfreezing, changing, and refreezing. Unfreezing focuses on creating the motivation to change, changing focuses on providing employees with new information, behavioral models and new ways of looking at things. Refreezing is the final stage used to help employees integrate the changed behavior into the every day process of doing business. Once employees are provided the opportunity to exhibit the new behavior, positive reinforcement is needed to reinforce the desire change (Kreitner & Kinicki, 2004) Works cited Kreitner, R., Kinicki, A. (2003). Organizational behavior 6e. New York: The McGraw-Hill Companies. Retrieved February 12, 2007 from University of PhoenixResource, MBA520 Resource optimization website http://forio.com/pdasim.htm

Public use Heliports Essay Example for Free

Public use Heliports Essay Introduction   Ã‚  Ã‚   Heliports is a small airport variable only for use by helicopters. In the heliports we have windsock which are for the direction of the landing of helicopters, and also heliports contain one or more helipads which have limited facilities such as lighting and fuel. In larger towns, heliports are usually situated closer so as to give quick service to customers. Heliports give advantages in terms of travel to many urban destinations or even to the city’s airport which can be more much faster than driving there. In the hospitals, we have helipads for faster service so as to give emergency cases of the patients more quicker service in terms of remotes areas. Heliports have no orientation and no standard fashion like runways because of its service to customers and the space which it occupies. Heliports, the light usually consists of a circle or square of insert lights around the lift off area and another around the overall landing area in the take off area. Issues and challenges facing the development of heliports   Ã‚   The public perception in the growth of heliports is that the excessive noise produced by the helicopters which encourage noise pollution in the urban and rural areas whereby noise which comes from cars, music and people are less accountable by public. Also the reduction of traffic jams on the public used roads by vehicles. Development of public use heliports one has to believe is not the road to riches, but the way to manage it rightfully and generate income is difficult, thus the challenges are just like any business venture. Heliports could be viable but to venture into this business you need to have revenue and building infrastructure so as to hire a manager and partner.   Ã‚  Ã‚   The development of public use heliports must be designed so as to attract the travelers and to modernity the landing and service facilities which are supposed to be used in the heliports. The creation of heliports in the cities is the negative effects on the adjacent residence and to get the land so as to set heliports is very difficult around the cities because of discouragement of noise pollution. In other cities, heliports are said to harbor traveling of terrorists and other awful activities. The heliports managers must watch costs, and understanding profit and loss statements and their impacts. Managers must be good so as to promote the business and maintaining a good relationship with local communities and the government.   Ã‚  Ã‚  Ã‚   One of the core challenges facing public use heliports is the private heliports, where the private use their own price to attract the costumers and also the service which are rendered by the company. The issues of availability of fuel, hangars, and maintenance of heliports must be focused as the first challenge that degrades the development and this also brings the problem between the manager and property owners. Citizen in different cities have tried to complaint about the manufacturing of the heliports, this is because of noise, geographical issues, economics and the level of tourist that brings the site of positioning of heliports to be difficult and challenge to developers. Even in a city with no noise complaints, city planners are adopting the view that the public doesn’t consider heliports the best use of land. Unfortunately, there are cities which have public use heliports, but city officials felt that a new convention centre parking lot would better serve the public and generate revenue as opposed to expenses. (Bednarek, 2001). Reference: Bednarek, J, R. (2001). America’s Airport. Texas A M University Press.

Car Repair For The Do-It Yourselfer Essay -- Compare Contrast Website

Car Repair For The Do-It Yourselfer For most people driving a vehicle is a normal and every day process. On any given day driving in city or town traffic one can experience a number of noises by either their own of somebody else’s vehicle. Car repair can be very expensive, and lately, do-it-yourself projects are very popular. In today’s Internet world, the driver has an option to explore the World Wide Web for information on symptoms, problems, and, depending on the service, the repair procedure. This paper will concentrate on two web sites. The fundamental difference between the two is how much one advertises, and how the other sets the viewer in the right direction. The better of the web sites, in my opinion, is the one without all the bells and whistles. The first is www.10W40.com which is a do-it-yourself web site designed to help the home mechanic to do simple to moderate to difficult procedures of car repair. The web site deals with many makes and models of cars, and was very informative. Most of the aspects about the site I liked. This web site has faults; the most notable is the site doses not use big pictures or graphics. As web sites go, it is very plain, and by today’s standards inexpressive. Another problem is the text, it is very small, and on a 15-inch screen it still strains my eyes. In my opinion the site doses not need any more to be useful. The functionality is what is important most. The language is in layman’s English. On the left edge of the home screen are the important links, such as repair manuals, advise forums, and parts/tools. The site is very easy to navigate to the repair section, and then find the link for the particular type of repair. For example, if a person has a probl... ...auto systems work, but as stated not useful for the shade tree mechanic. A very nice link I found was, â€Å"tips from the pros† on about how to avoid getting ripped off. This is very important as of lately, mainly because women are more independent today. Many feel they are being tricked, ripped off, or they cannot trust the mechanic servicing their vehicle. Generally cars have reached a technical level that most people do not comprehend. The more technology expands the harder it is for the driver to make informed decisions. This is an increasingly daunting task. Information on this web site could very well help any vehicle owner make sound informative decisions with their auto service. By far I understood and found the practicality of 10W40.com over autorepair.about.com. Its simplicity works well and over all has more information that the average joe can use.

Examine Sociological Theories Essay

Examine sociological theories that explain the ethnic dimension to crime and deviance (21 marks) Recent statistics show that black people are five times more likely to be in prison than whites. Ethnic groups are heavily over represented in prisons. Waddington et al investigated whether ethnic groups were targeted by the police and whether they were treated unfairly. Waddington et al concluded that these ethnic minorities were stopped and searched more because they were out on the street at the time. His research could be criticised because he only interviewed the police, he didn’t interview the groups that were treated by the police. This would result in the police possibly lieing and saying that they treat the black people just as equally as they treat white people. Phillips and Bowling would disagree with Waddington et al as they believe that the over policing of ethnic neighbourhoods creates resentment. After the death of Stephen Lawrence the McPherson report stated that poor black areas were over policed but under protected. This would again back up Phillips and Bowling and their theory of over policing in poor black areas. This angers the people in these poor areas because of the fact that the police are only targeting them for certain crimes such as drugs. The report states that they will randomly pick on a working class black male rather than someone else for a stop and search as they believe these people are more likely to be holding drugs. This leaves the rest of the people under protected because the police aren’t concentrating on other crimes such as robbery or assault. Skolnick believes that most police stereotype the young black male as being a typical offender. He says that these stereotypical beliefs come from the ‘canteen culture’ and it is this belief that backs up Phillips and Bowling, as they would say that this belief would lead to the over policing in the poor black areas. Drabble investigated whether black people were treated unfairly in the courts. He found that blacks were more likely to be charged with more serious forms of offence than whites, whites were more likely to be cautioned whereas blacks were more likely to be prosecuted. This is evidence of institutional racism mentioned in the McPherson report. Hood found that black people were more like to receive custodial sentences even though other punishments such as fines and community service were available alternatives. Fitzgerald researched ethnic minority street crime in London. He interviewed young ethnic minority offenders and their mothers and found that the higher the levels of deprivation in an area, the higher the levels of crime. It is a statistic that Afro Caribbean households are more likely to be headed by lone parent families, which then results in higher crime in the family. This links in with Charles Murray who said that lone parent families would result in higher chances of failure at score and therefore higher chances of them turning to crime. It also links in with left realism and Jock Young and John Lea’s theory of relative deprivation. They say that people commit crime when they feel deprived, the media stresses the importance of economic goods and some will turn to crime to get these goods. They also say marginalisation is a reason for the increase in crime because of young black men are made to feel on the edge of society with nobody to stand up for them, this causes frustration and resentment which leads to crime being committed. These reasons then cause an increase in subcultures or gangs and therefore an increase in crime. All of these researchers could be criticised as they reinforce stereotypes of the young black male as well as not looking at white, middle class crime. This would then link in with Marxism and the fact that the upper class are being treated more fairly with crime they commit than the lower class.

Is the Roommate Experience Lasting Longer for Young Adults