Analyzing Quantitative Models

How can a potential user distinguish between a quantitative model that may be of some real value and one that is not? The model builder rarely provides much help, since most are advocates of their own work and tend to lose their objectivity toward the model. Therefore, an independent evaluation is necessary to judge the true usefulness of the model.quantitative models, analysis

PC programs for the prediction of the linear stability behavior of liquid propellant propulsion systems and application to current MSFC rocket engine test programs, volume 1

Research on propulsion stability (chugging and acoustic modes), and propellant valve control was investigated. As part of the activation of the new liquid propulsion test facilities, it is necessary to analyze total propulsion system stability. To accomplish this, several codes were built to run on desktop 386 machines. These codes enable one to analyze the stability question associated with the propellant feed systems. In addition, further work was adapted to this computing environment and furnished along with other codes. This latter inclusion furnishes those interested in high frequency oscillatory combustion behavior (that does not couple to the feed system) a set of codes for study of proposed liquid rocket engines

An Economic Analysis of the Marketing Operations of the Utah Berry Growers\u27 Association

Raspberry production in Utah is concentrated to a large extent in Utah county. According to the 1940 census, Utah county contains 62 percent of the state acreage of 611 acres. Average raspberry acreage in Utah is only about one-half acre per farm on farms reported as growing raspberries. With such small acreage the average producer cannot afford to devote very much time and effort to the production and marketing of raspberries. In the majority of cases raspberry production is carried on by the farmer\u27s wife, as a means of gaining “pin” money for use in the household. Proceeds from raspberries are one of the first cash incomes of the year received from fruit production. The harvesting of raspberries begins about the 25th of June and lasts until the end of July in Utah county. Because of the small acreage per grower, short production season, and high perishability of raspberries, a problem of marketing arises. Previous to 1939, the Salt Lake Public Market was over-supplied with raspberries during peaks of production. This resulted in low prices. Peddlers and truckers dictated the price received by producers. Thus, low prices often resulted and caused the berries to be left on the vines as the prices would not pay the cost of picking and packing. In order to provide better market outlets, establish satisfactory grades and standards, and provide for more orderly marketing, the producers in Utah county organized a Cooperative Marketing Association in 1939. This association was organized for the purpose of marketing raspberries grown by producers in Utah county from Mapleton to Pleasant Grove. The purpose of this study is: (1) to show the problems relating to the marketing of raspberries in Utah, (2) to analyze data made available by the Utah Berry Growers\u27 Association order to show market areas, methods of marketing, price received by method of sale, marketing expenses and to determine sales and prices received on week days and holidays, (3) to analyze the possibility of extending the markets for Utah raspberries

The Burning of the University

"Fall 2013""This story originally appeared in the 1894-95 Savitar, the first ever edition.""An English professor recounts the night Academic Hall burned."[Story] by George Armstrong Wauchope, an English professor who wrote the lyrics to the alma mater in 1895 ; [Photos] courtesy University Archive

U.S. public and private venture capital markets, 1998-2001: A fundamental information analysis

Systematic analysis of U.S. capital markets reveals important empirical facts that analytical modeling or empirical research seeking to explain the 1998-2001 movements needs to recognize. There is no single "bubble point" at which U.S. capital markets had an epiphany that valuations required a sharp downward re-evaluation. Rather, different sectors had different points after which ex post sustained declines occurred. For the NASDAQ/NYSE/AMEX public capital markets, the sustained ex post declines occurred starting in March 2000 for the computer software industry and in September 2000 for the computer hardware industry. Private venture capital investment in new ventures peaked in the March 2000 quarter for software and in the September 2000 quarter for hardware and communications. Four sectors exhibiting extreme price movements are identified - computer hardware, computer software, telecommunications, and biotech/pharmaceuticals. These sectors had observable characteristics prior to 1998 that implied higher risk - they had higher relative risk (CAPM beta), higher standard deviation of security returns, more extreme revenue growth increases (decreases) in the upper (lower) tails, and a higher propensity for negative net income. During the 1998-2001 period, companies in these sectors had abnormally high revenue growth rates. An Internet sample of companies exhibits even higher abnormal revenue growth rates relative to either prior periods or other companies in the 1998-2001 period. The large relative increases and decreases in the market capitalization of U.S. capital markets in 1998-2001 may well have more grounding in risk-reward asset pricing theory than many commentators have recognized.capital markets; stock prices; Internet stocks; stock market bubble;

Team project work for distance learners in engineering � challenges and benefits

Team Engineering (first presented in autumn 2006) was the first course (module) at the Open University (OU) to use wikis and video-conferencing in combination to support the work of project teams. Teams of five students, working remotely from one another, tackle an engineering project over 32 weeks. The teams schedule regular meetings throughout the project and these are conducted using FlashMeeting, a lightweight video-conferencing system being developed by the OU�s Knowledge Media Institute, KMi (http://flashmeeting.open.ac.uk). Unlike other systems, FlashMeeting requires no software installation. In addition, it not only archives the meetings but also provides detailed analysis of the proceedings. The teams are encouraged to use the wiki facility in the OU�s virtual learning environment (VLE) for their collaborative report-writing. The collective work of the team is assessed through these reports. The performance of the individual is assessed through their reflective account of the project. The archiving facility in FlashMeeting has been of huge help in developing this. For the next presentation of the course a learning journal is to be added to the existing means of support. Feedback from tutors and students alike has been extremely positive, whilst recognising the limitations of the technologies in their current implementations. This paper gives an account of the students� achievements and offers an assessment of the pedagogic potential of using these media together

Team project work for distance learners in engineering – challenges and benefits

Team Engineering (first presented in autumn 2006) was the first course (module) at the Open University (OU) to use wikis and video-conferencing in combination to support the work of project teams. Teams of five students, working remotely from one another, tackle an engineering project over 32 weeks. The teams schedule regular meetings throughout the project and these are conducted using FlashMeeting, a lightweight video-conferencing system being developed by the OU's Knowledge Media Institute, KMi (http://flashmeeting.open.ac.uk). Unlike other systems, FlashMeeting requires no software installation. In addition, it not only archives the meetings but also provides detailed analysis of the proceedings. The teams are encouraged to use the wiki facility in the OU's virtual learning environment (VLE) for their collaborative report-writing. The collective work of the team is assessed through these reports. The performance of the individual is assessed through their reflective account of the project. The archiving facility in FlashMeeting has been of huge help in developing this. For the next presentation of the course a learning journal is to be added to the existing means of support. Feedback from tutors and students alike has been extremely positive, whilst recognising the limitations of the technologies in their current implementations. This paper gives an account of the students' achievements and offers an assessment of the pedagogic potential of using these media together