10,229 research outputs found

    CO observations of the expanding envelope of IRC plus 10216

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    High-sensitivity emission profiles were observed for the transition of C12O16 and C13O16 towards IRC + or - 10216. It appears that the spherically symmetric uniform mass-outflow model proposed by Morris is necessary to describe the line profiles. The outflow appears to be slightly accelerated, having a velocity of 15 km/sec at the edges of the CO cloud, compared with 12 km/sec for the more centrally confined molecules

    Flue-Cured Tobacco Developments Under the AAA

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    The Economic Impact of the University of Virginia: How a Major Research University Affects the Local and State Economies

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    The University of Virginia, by providing world-class educational opportunities to citizens of the state, has played an important role in the lives of Virginians since its founding in 1819. The University enhances economic opportunity and provides a steady stream of citizens prepared to assume positions of leadership in business and in public service. In carrying out its core missions of education, research, and service, U.Va. has a vital impact on its community, on its region, and on the entire state. A complete picture of the economic impact of the University requires both a close-up lens, for the impact on the local community, and a wide-angle lens, for the impact on the state as a whole. Earlier studies of this sort have concentrated mostly on the local effects of university spending. This study extends the earlier work by adding to the traditional local economic impact analysis an overview of how a large public research university can contribute to the economy of an entire state. In making our case we review the literature on the economic rationale for state support of a major research university with a large component of students from other states and from other nations.Virginia university education research

    Issues Related to the Emergence of the Information Superhighway and California Societal Changes, IISTPS Report 96-4

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    The Norman Y. Mineta International Institute for Surface Transportation Policy Studies (IISTPS) at San José State University (SJSU) conducted this project to review the continuing development of the Internet and the Information Superhighway. Emphasis was placed on an examination of the impact on commuting and working patterns in California, and an analysis of how public transportation agencies, including Caltrans, might take advantage of the new communications technologies. The document reviews the technology underlying the current Internet “structure” and examines anticipated developments. It is important to note that much of the research for this limited-scope project was conducted during 1995, and the topic is so rapidly evolving that some information is almost automatically “dated.” The report also examines how transportation agencies are basically similar in structure and function to other business entities, and how they can continue to utilize the emerging technologies to improve internal and external communications. As part of a detailed discussion of specific transportation agency functions, it is noted that the concept of a “Roundtable Forum,” growing out of developments in Concurrent Engineering, can provide an opportunity for representatives from multiple jurisdictions to utilize the Internet for more coordinated decision-making. The report also included an extensive analysis of demographic trends in California in recent years, such as commute and recreational activities, and identifies how the emerging technologies may impact future changes

    The classification of LANDSAT data for the Orlando, Florida, urban fringe area

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    Procedures used to map residential land cover on the Orlando, Florida, Urban fringe zone are detailed. The NASA Bureau of the Census Applications Systems Verification and Transfer project and the test site are described as well as the LANDSAT data used as the land cover information sources. Both single-date LANDSAT data processing and multitemporal principal components LANDSAT data processing are described. A summary of significant findings is included

    Linear and nonlinear response of a rectangular plate subjected to lateral and inplane sonic boom disturbances

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    Transient response of rectangular window pane exposed to sonic boom disturbance using linear and nonlinear theorie

    Redefining and Improving School District Governance

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    Explores recent research literature and emerging practices concerning the roles and responsibilities of district school boards and the issues impeding or assisting their effectiveness

    Large diameter astromast development, phase 1

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    Coilable-longeron lattice columns called Astromasts (trademark) were manufactured for a variety of spacecraft missions. These flight structures varied in diameter from 0.2 to 0.5 meter (9 to 19 in.), and the longest Astromast of this type deploys to a length of 30 meters (100 feet). A double-laced diagonal Astromast design referred to as the Supermast (trademark) which, because it has shorter baylengths than an Astromast, is approximately four times as strong. The longeron cross section and composite material selection for these structures are limited by the maximum strain associated with stowage and deployment. As a result, future requirements for deployable columns with high stiffness and strength require the development of both structures in larger diameters. The design, development, and manufacture of a 6.1-m-long (20-ft), 0.75-m-diameter (30-in.), double-laced diagonal version of the Astromast is described
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