Space Shuttles Flight Path Essay Example | Topics and Well Written Essays - 1500 words

Space Shuttles Flight Path - Essay Example In an approximately a two minute time interval, the two boosters are spent and are separated from the external tank. Once spent, they fall into the ocean at predetermined points and are recovered for reuse. After about eight minutes firing of the engines shuts down, and the craft is injected into orbit. At this time, the external tank is then separated from the orbiter, and is sent into a ballistic trajectory in a designated, yet remote area of the ocean, and is not intended for recuperation. The engine system is constituted of thirty eight primary Reaction Control System (RCS) engines and six vernier RCS engines. RCS are used for maneuvering leverage. Reaction control system release of the engines is done in sequential separation from the orbiter. Initiation of the Orbital Maneuvering System (OMS) engines fires the orbiter into orbit. OMS are used to increase velocity on the orbiter's maneuvers. Two OMS execute the orbiter into orbit, while only one thrust sequence is utilized for deorbit. Velocity is attained at approximately 25, 405 feet per second (17,322 statute miles per hour). Deorbit requires a decrease of velocity at about 300 fps (205 mph) for reentry. In the initial entry sequence, the RCS engines control the attitude (i.e. pitch, roll and yaw) of the orbiter, as aerodynamic pressure builds toward activation of the primary reaction control system engine inhibitors. High temperatures induced by entry, are mitigated by a reusable thermal protection system over the entire orbiter. Once unpowered, the orbiter glides to Earth and lands with aviation instrumentation with nominal touchdown at 186 to 196 knots of speed (i.e. 213 to 213 to 225 miles per hour. Risk assessment and cost mitigation management planning in the space community is prefaced by the prediction that satellites have disasters of their own. On February 24, 2009, orbit of the OCO satellite failed as it was being carried into space when the Taurus rocket carrying the craft detached and crashed into the sea near Antarctica. Initial launch of the Observatory was followed by reschedule of the project. In terms of statistical significance probabilistic risk projections of satellite failure and especially satellite collisions are almost impossible to predict. In consideration of the primary differences between accident risk and other types of risk such as public health mitigation of toxicological risk are located in: 1) the derivative of hazard utility to cost; 2) and longitudinal repercussions of consequences of risk. Accidents, while potentially easier to evaluate and hence, mitigate according to engineering systems analysis, may include environmental disasters unknown or statistically insignificant (i.e. outer space satellite collisions). Costs may be high due to level of technological process included in such systemic models of risk accountability, but potential for adherence to regulatory expectation is high in professional settings where scientific analysis and expert operation of technological endeavors eliminates random human errors by laypersons. Here the garbage in and garbage out scenario works best, as garbage can be understood and controlled through incorporation of monitoring into mitigation strategies. A schematic showing the arrangement of the valves in the main propulsion system of Mars Observer (Harland, 2005). The development of universal Safety and Hazard Analysis sources by NASA and their impact on manufacturing

Young peoples attitudes experience of following a healthy diet Literature review

Young peoples attitudes experience of following a healthy diet - Literature review Example This paper however focuses only on young people’s attitudes and views on having a healthy diet as early life attitudes would most likely be carried over to adult stage if no intervention or correction is made at an early stage. A healthy or balanced diet includes that the amount of food taken by the body which should be enough to cover all the nutrition and vitamins the body needs (WHO, 2004). Having of course healthy diet can become a part of health lifestyle that could lead to longer life since the same could prevent the risks of having diet related diseases such as: obesity, anorexia, cancer, diabetes and many more. As such, knowing the opinions of young people on healthy diet has direct relationship on what influences their attitudes towards the subject of healthy diet and even their life style. Knowledge on their attitudes and predisposition would then lead to knowing the proper intervention that should be made. Bellisle (2004) claimed that many of the young people are not following dietary guideline for a healthy food and life style. The main consumer of fast food are young or about seventy percent of 16 to 21 years of age eat fast food at least once a month (Stokes and Lomax, 2008). What then are reasons of the young people for preferring unhealthy diet as could be best exemplified by fast food? Young people would rather prefer to eat fast food more than old people due the need to save time and money as most of young people are students (Bell isle, 2004). Students at present times need to adjust with different demands including their school requirement. Another reason for preference unhealthy diet is lack of awareness of its ill effects (Bellisle, 2004. This therefore implies lack of knowledge on the importance of having healthy diet on human health. Ignorance as cause is curable by education. If education has taught young people how to do some skill or do some productive work, then their knowing the importance of balance diet to

Why is College So Expensive Research Paper Example | Topics and Well Written Essays - 1000 words

Why is College So Expensive - Research Paper Example Tuition, books and housing are enormously expensive and take the biggest bite out of the higher education budget but it doesn’t end there. It never ends. There are lab fees, dorm needs including computer, clothes and stereo, commuting costs, parking fees, tutoring and food. Forget entertainment expenses, no money left for that. College is expensive, very much so but just how expensive and why? According to experts, the cost to attend a four-year public university is about $16,000. That includes tuition, housing and general fees but not books. A private university is more than double that amount. Add to that other expenses such as dorm room accessories, electronics and clothing. Then there’s commuting which includes gas, maintenance and parking fess which can total up to $500 per semester. Tickets for outdated stickers handed out by the campus police push the cost higher. Getting a little tutoring help for that physics test will run about $30 per hour. The â€Å"luxuryà ¢â‚¬  of living on campus costs more than anyone can possibly anticipate. â€Å"The main reason why people who go to public universities end up in debt, is not the tuition, but the living away from home expenses, which at a public university, are three or four times more than tuition.† (Hacker, 2010) The price of books is another expense that is always higher than anticipated, shockingly so. The cost of books sometimes determines a student’s major. The difference in price of books can total $1200 depending on the field of study. (Beeman, 2011). There is a legitimate justification for why college textbooks cost more than paperbacks at discount book stores. Producing a new textbook is often very expensive. The market for these books is limited and has become increasingly so. In days past there were more buyers for new textbooks. Publishers could, therefore, distribute production expenses over a larger number of buyers. The relatively recent expansion of the rental and u sed textbook market has diminished the number of new books sold which has kept the price of new editions inflated. Publishers now generate updated editions. In this way they sell more books which acts to spread the production costs over more buyers. The total cost of college textbooks has actually fallen recently even as the price for new books has risen. (Weston, 2011). â€Å"Student spending on textbooks has been decreasing since 2006 because of the rise of electronic books, rentals and the used book market† (â€Å"Why,† 2011). During the 2010-11 scholastic year the average amount spent on books at a four-year college was $534. During the 2005-06 year that amount was $644. Students spend more on gasoline and going to the movies during the academic year and twice the amount on cell-phone use as they do on book expenditures. (Weston, 2011). Tuition costs are high for many reasons. Colleges have expenses which may or may not be obvious to the casual observer. The high-e nd salaries paid to employees have risen. The expense of employing well educated people began to increase substantially about 30 years ago for every industry. Colleges are an industry that cannot readily cut back on labor and much of its work force is well educated by necessity. (Goldstein, 2010). Salaries of faculty and supportive staff account for the largest piece of the college expense pie. The second highest expense can be classified as building maintenance which includes paying the electric bill, ongoing construction, cleaning and furnishing classrooms, libraries, gyms, labs, dorms, student centers and supplying computers, software, IT needs and books. (Trachtenberg, 2011) Colleges have been allocating more for support

Victoria Secret Case Study Example | Topics and Well Written Essays - 4750 words

Victoria Secret - Case Study Example Metrics 16 Outcome metric 16 Performance Metric 16 13. Leveraging its brick and mortar store 17 14. Changes expected after the 24 months launch period 17 Works Cited 19 1. Current target segment: The new brand for men The management of Victoria’s secret has come up with the strategy to expand their line of products into the men’s segment. They expect to be equally successful in this segment as they had been in the women’s segment. The underlying idea behind this expansion is to introduce color and style to men’s underwear thereby exploring a market which is tremendously underserved. The new line brand of products targeted towards men will add a new dimension to Victoria’s Secret range of products. Expanding into the new line of men’s undergarment will fetch consumer loyalty to Victoria’s from this segment of customers as well alongside the loyalty of their existing customers. The underlying strategy behind the company’s expansio n into the men’s underwear line is to attract new customers. This strategy will help the business to diversify into a segment that is yet to be explored in the US and henceforth in the world. In addition to that, the expansion program will help Victoria’s secret to achieve a wider customer base thereby creating new sources of revenue stream. 2. Do men consider underwear purchases discretionary? According to a logic outlined by Alan Greenspan, men’s practice of buying underwear is thought to be a good indicator of discretionary spending (â€Å"What Is the Men's Underwear Index?†). The logic that Alan Greenspan stated is both elegant and simple. According to him, more often than not most of the guys have their drawer filled with fairly ratty underwear which they choose to wear until and unless the elastic has ruptured or the boxers are riddled with holes. Because of the fact that co workers and friends generally do not notice a guy’s undergarments, h ence this frayed underwear often looks like a purchase made on discretionary basis. Men’s pattern of buying underwear is a crucial indicator of how the economy is performing. Whenever, men starts to apprehend that the economy is about to dip, they simply stop refilling their drawers with fresh undergarments. A perfect example to support this theory was when the economy started dipping the year 2008, annual sales of men’s underwear dropped by 12% (Trex â€Å"Boxers, Briefs or Loincloth? A Brief History of Men's Underwear†). In accordance with these recent theories, expanding into the men’s segment will prove to be a prospective decision for Victoria’s secret. The primary reason that can be attributed to this fact is that currently the United States economy is recovering at a steady pace. Moreover, not many undergarment brands exist in the country which produces men’s underwear suggesting that, this segment is highly unexplored. So, it is expe cted that the changing pattern in the performance of the United States economy will bring about a profound change in the way men buy their undergarments. Thus, an expansion in this division will prove to be a value maximizing decision for the company. If the products are well appreciated by customers and society, Victoria’s Secret has a possibility for extended growth. 3. Potential target market The potential target market is young and trendy men between the age group 15 and 45. As of now, in terms of geography, the chosen target market is USA. The reason for this is because of a slow growth (10%) witnessed in the annual sales of me

Value and Risk Management in Construction Case Study

Value and Risk Management in Construction - Case Study Example Resulting damage of hazards and threats, which became risks, might be to the physical condition and security of employees, to place, gear or an whole installation, to the surroundings, to products, or to monetary assets (Waring, 2001). For those belongings of risks to commerce, this account suggests you ways to avoid/transfer; reduce/control or luxury them in case they occur to your business. The report finished upon the leadership of Mr. Dennis, Master of Marketing. If we analyze then we come to know that naturally, a decision to invest 5M in a capital project involves a mainly irreversible obligation of resources that is generally subject to an important degree of risk. Such verdicts have far-reaching effect on a company's productivity and elasticity over the long term, thus necessitate that they be part of a cautiously developed strategy that is based on dependable appraisal and forecasting actions. In order to handle these risk managerial decisions, TW has to make an evaluation of the size of the outflows and inflows of funds, the life span of the speculation, the degree of risk attached as well as the price of obtaining funds. Moreover, one of the mainly significant steps in the capital budget... In order to handle these risk managerial decisions, TW has to make an evaluation of the size of the outflows and inflows of funds, the life span of the speculation, the degree of risk attached as well as the price of obtaining funds. Moreover, one of the mainly significant steps in the capital budgeting cycle is working out if the benefits of investing big capital sums overshadow the costs of these investments. The variety of methods that business TWs use can be classify in one of two ways: customary and inexpensive cash flow techniques. Traditional methods comprise the Average Rate of Return and Payback; discounted cash flow (DCF) methods using Net Present Value and Internal Rate of Return. Net Present Value (NPV) According to the expert analysis net present value is a way of comparing the value of money now by means of the value of money in the potential. A euro nowadays is value more than a euro in the future; since inflation erodes the buying power of the prospect money, as money offered nowadays can be invested and so grow. The technique is a three-stage process: "To compute the present value of each component of cash spending in a proposal and then, to add these person present values together to offer a total present worth of the expenditures; To likewise compute the present value of each component of cash income in a proposal and, then, to add these personage present values together to offer a total current value of the incomes; To subtract the total present value of expenditures from the whole current value of the incomes, in order to decide the net current value"; Tinic, S. M., and West, R. R. (1986) If this computation produces an NPV that is optimistic, the

An audit of coded data Assignment Example | Topics and Well Written Essays - 3750 words

An audit of coded data - Assignment Example This report details the results of an audit of coder A data based on a set of reference data containing the correct inputs as present in Coder B data. This is to determine the accuracy of coding data, with the audit being in line with the prescriptions of the ACBA, or the Australian Coding Benchmark Audit. The basic method consists of analyzing coder A data for variances with the reference data as provided in coder B. Coder B data is correct, against which the accuracy of coder A data is vetted against. This is the fundamental method. The use of 40 records for the audit is in line with the ACBA prescription for audit sample size to be able to make a good assessment of the quality of the coding. The present research has identified that the ACBA audit process, in theory, is a convenient, practical and effective process for identifying coding error sources, not only from the coder side, but also from the wider system side, and in so doing allow for a more comprehensive view of the sourc es of and potential mitigations for the correction of coder and process/system mistakes in the coding process. ACBA in other words also shores up the reliability of coded data, by tracing coding mistakes in a comprehensive and systematic fashion. ACBA also makes it easier to understand that the coding process and coding mistakes that follow from certain coding processes can be as much a source of coding error as human error.

The current U.S. economic crisis and potential fixes Essay

The current U.S. economic crisis and potential fixes - Essay Example Citigroup, UBS, and JPMorgan have all announced negative earnings in their last financial reports as well as plans to lay off a significant number of workers. This paper carries out an analysis of how and why the crisis occurs and it evaluates the effectiveness of current measures used by the government to solve this crisis. The rest of the paper is organized as follows: Section 2 looks at how the crisis occurred, section three looks at the causes of the crisis that is why the crisis occurred; Section 3 looks at the regulatory environment and current solutions; and the last section provides some conclusions and recommendations. Sub-prime loans are loans offered to borrowers with no prior track record of good credit history3. Due to the risk inherent in the loans, they are often issued at very high interest rates so as to compensate for the extra risk that they carry4. A sub-prime crises or credit crunch is said to exist when a significant number of sub-prime loans have been issued to unscrupulous borrowers5. These crises pose difficulties to both financial institutions and the borrowers. The outbreak of the recent sub-prime crises came after warning signals of write-downs in the value of mortgages late last year6. House prices in the U.S witnessed an unusual growth between 1997 and 2005. For example, prices increased by approximately 85% during this period. The period 2001 and 2005 witnessed the highest rates of appreciation7. Sub-prime delinquencies and foreclosures were therefore mitigated by house price appreciations during these years. This is so because borrowers facing difficulties to make regular mo rtgage payments could depend on the appreciation of the value of their property to solve their financial problems by refinancing the mortgage and withdrawing cash from the increased equity in the house thereby sustaining the new mortgage for a while. Borrowers could repay the principal by selling off the property8. Appreciation in property prices