No description available.

A recém-adquirida competitividade pela energia eólica frente a outras fontes alternativas e, até mesmo, convencionais tem sido comemorada pelo setor de energia elétrica. No entanto, a base para essa comparação leva em conta apenas os parâmetros dos investimentos do parque viabilizado, não sendo considerados outros fatores inerentes à inserção da fonte na matriz, como, por exemplo, o aumento do risco ao sistema, investimento necessário à ampliação da Rede Básica para escoamento da energia para o centro de carga e os custos com redespacho de geração, reserva girante e controles do sistema. O maior potencial está concentrado no Nordeste e o maior centro de carga no Sudeste, assim, em caso de exploração intensiva do potencial da fonte, será necessário passar por grandes investimentos em reforços e ampliações da rede básica. A partir desse panorama, busca-se realizar as primeiras análises de sensibilidade sobre a eficiência econômica dos parques eólicos instalados no Nordeste e, ao mesmo tempo, analisar as condições de atendimento da ponta. / The newfound competitiveness in wind power compared to other alternative and even conventional energy sources has been celebrated by the electric power sector. However, the basis for this comparison takes into account only the parameters of the Capex, not considering other factors inherent in the insertion of the source in the array, for example, increase the risk to the system, expansion of the investment necessary for Basic network for transport of energy to the load center and the cost of redispatch generation, spinning reserve, and system controls. The greatest potential is concentrated in the Northeast and the largest load hub in the Southeast, so, in case of intensive exploitation of the potential of the source, large investments in reinforcements and expansions of the grid will be necessary. From this overview, we attempt the firsts sensitivity analysis on the economic efficiency of wind farms in the Northeast and the load peak supply conditions.

Although Value Engineering (VE) studies are mandated by the Federal Highway Administration for large ($25 million or more) federal-aid highway projects, many state Departments of Transportation do not conduct voluntary VE studies on smaller projects. Those who have done so have seen project improvements and savings as a result. The success of the existing voluntary VE programs indicates that VE application to small transportation projects represents a significant opportunity for savings. The goal of this thesis work was to develop a methodology for conducting VE studies on small transportation projects that would make efficient use of available personnel and require little VE training. The author examined the results and procedures of several DOT VE programs, including some that conduct studies on projects as small as $1 million. The analyses revealed sources of past savings, trends and common methods in VE studies, and procedures and forms that are best suited to the types of project under study. Based on the research and analyses, the author developed a VE study methodology that is tailored to small transportation projects, including a workbook and both general and specific guidelines. This report proposes an approach to VE on small transportation projects using this methodology, which is characterized by conformance with accepted VE practice and FHWA guidelines, efficient use of personnel, and ease of use. In particular, these recommendations are intended for use by any state DOT with an existing but limited VE program, such as MassHighway, which currently conducts only mandated studies.

Thesis. 1975. M.S.--Massachusetts Institute of Technology. Dept. of Civil Engineering. / Bibliography: leaves 158-163. / M.S.

Typescript. / Digitized by Kansas Correctional Industries

The purpose of this study is to measure the costs of the perceived safety threat from triple trailer operation in Oregon. This is done using the political referendum model of a common non-market valuation technique, contingent valuation. Specifically, the average cost of allowing triples will be found so that comparison with previously estimated benefits will provide a measure of net social welfare associated with triple trailer use. The data were collected through in-person interviews conducted in five regions in Oregon. Questions relating to the respondents' attitudes toward triple trailer trucks, driving experience, education and other demographics were asked. The empirical model estimates the probability that respondents will vote to ban triple trailers. The results of this study suggest that there are concerns about the safety of triple trailer operation. However, there seem to be still greater benefits; a result which is consistent with the recent ballot measure. / Graduation date: 1995

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Includes bibliographical references. / iv. : ill. ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Economics, 1996

Thesis (MPhil)--Stellenbosch University, 2005. / ENGLISH ABSTRACT: The publication of news websites mushroomed since the establishment of the World Wide Web, but their viability and/or profitability still tend to pose a problem. This study approaches the question from the viewpoint of the niche theory and gratification and investigates the advantages and disadvantages of publishing news on the Internet, as well as possible elements of news-website business models. The latter comprises firstly, costs such as labour, content, production, marketing and distribution, and secondly possible income sources. It also compares a number of different business models. It found, inter alia, that a greater variety on the broader news menu, as well as the development of cost-effective ways to utilise the unique features of the Internet in the presentation of news will be fundamental to the eventual success of news websites. A generally acceptable norm for the measurement and auditing of traffic to news websites will be crucial in the optimal utilisation of the potential advertisingsales income. The study concludes that it is doubtful whether news websites on their own will ever succeed as media enterprises. In most cases news websites will probably only exist as a minor component of websites deriving their income from a variety of other sources. However, technological innovation may come up with new possibilities that may revolutionise the e-news industry in such a way that it may become profitable on its own. / AFRIKAANSE OPSOMMING: Die publikasie van nuuswebwerwe het soos ʼn paddastoel opgeskiet sedert die daarstelling van die Wêreldwye Web, maar die lewensvatbaarheid en/of winsgewendheid van sulke webwerwe blyk steeds ʼn probleem te wees. Hierdie studie benader die vraagstuk uit die oogpunt van die nisteorie en voldoening, en ondersoek die voor- en nadele van nuuspublikasie op die Internet, sowel as die faktore waaruit bedryfsmodelle vir nuuswebwerwe saamgestel kan word. Die laasgenoemde omvat eendersyds koste, soos arbeid, inhoud, produksie, bemarking en verspreiding; en andersyds die moontlike inkomstebronne. Dit vergelyk ook ʼn aantal verskillende bedryfsmodelle. Die bevindings sluit in dat ʼn groter verskeidenheid op die breër nuusspyskaart sowel as die vind van kostedoeltreffende maniere om die unieke eienskappe van die Internet ten volle in die aanbieding van die nuus te benut, onderliggend tot die uiteindelike sukses van nuuswebwerwe sal wees. ʼn Algemeen aanvaarbare norm vir die meting en ouditering van die verkeer na nuuswebwerwe sal deurslaggewend wees in die optimale benutting van die potensiële inkomste uit advertensieverkope. Die studie kom tot die slotsom dat daar twyfel bestaan of nuuswebwerwe as sulks op die lang duur as onafhanklike media-ondernemings sal slaag. In die meeste gevalle sal nuuswebwerwe waarskynlik hoofsaaklik net voortbestaan as ʼn ondergeskikte komponent van webwerwe wat hul verdienste uit ʼn verskeidenheid van ander bronne put. Tegnologiese vernuwing kan egter nuwe moontlikhede daar stel wat ʼn ommekeer in die winsgewendheid van die e-nuusbedryf teweeg kan bring.