899 research outputs found

    Topics on urban planning annotated bibliography

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    Urban planning and development - bibliography and abstract

    Aeronautical Engineering: A special bibliography with indexes, supplement 54

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    This bibliography lists 316 reports, articles, and other documents introduced into the NASA scientific and technical information system in January 1975

    Automated Transit Networks (ATN): A Review of the State of the Industry and Prospects for the Future, MTI Report 12-31

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    The concept of Automated Transit Networks (ATN) - in which fully automated vehicles on exclusive, grade-separated guideways provide on-demand, primarily non-stop, origin-to-destination service over an area network – has been around since the 1950s. However, only a few systems are in current operation around the world. ATN does not appear “on the radar” of urban planners, transit professionals, or policy makers when it comes to designing solutions for current transit problems in urban areas. This study explains ATN technology, setting it in the larger context of Automated Guideway Transit (AGT); looks at the current status of ATN suppliers, the status of the ATN industry, and the prospects of a U.S.-based ATN industry; summarizes and organizes proceedings from the seven Podcar City conferences that have been held since 2006; documents the U.S./Sweden Memorandum of Understanding on Sustainable Transport; discusses how ATN could expand the coverage of existing transit systems; explains the opportunities and challenges in planning and funding ATN systems and approaches for procuring ATN systems; and concludes with a summary of the existing challenges and opportunities for ATN technology. The study is intended to be an informative tool for planners, urban designers, and those involved in public policy, especially for urban transit, to provide a reference for history and background on ATN, and to use for policy development and research

    Landscape of logistics and the time present

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    Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Architecture, 2011.Cataloged from PDF version of thesis.Includes bibliographical references (p. 152-155).Upon arrival in Memphis by air, a sign welcomes passengers to "Memphis - America's Distribution Center", a reflection of one's place in the city, and the country. Rather than a romantic reflection of the cultural heritage of the city with Elvis Presley and B.B. King, the statement places passengers not at the destination of their travels, vis a vis a "welcome to", but en route somewhere else. Memphis International Airport, identified via its aviation code "MEM", is not a place of arrival-a terminal, from "terminus", the end-but a location to be passed through-a state of being in transit or colloquially "passing through". Few passengers and goods conclude their travel here; MEM's raison d'etre is as a layover, as travelers are being distributed elsewhere as a result of the efficiency of the hub-and-spoke model of aviation. As a result, MEM is the world's busiest cargo airport. At its peak, an upwards of six flights arriving a minute carrying Apple computers, Mickey Mouse plush toys, cooking items from William-Sonoma, and the variety of other goods to and from all corners of the world destined for FedEx's so-called SuperHub. Because of the presence of such a facility, MEM has arisen as an economic capital in an improbably location within the interior of the United States replete with its own sprawling developments. MEM, as an airport city, challenges the social and cultural norms of what one considers a traditional city, as its reasons for being is the economy of moving goods and founded on the way we do business and not the way we live. This thesis proposes an urban form for MEM's surrounding city that serves as a means of regeneration of the surrounding, decaying area as well as accepts the condition of being in transit for goods and people as a primary condition of existence. In Brophy's character's words, it is an urbanism that "[perpetually remains] in the present moment, in at least semi-sempiternal transit between departure from the past and arrival in the future" and is more appropriate than the status quo within the context of MEM with regard to the transitory nature of goods, passengers and employees. The urban logic is thus a metaphor of FedEx in the transposition of technological logics, such as the flow of bodies and the interface of machine, the parcel, and the human occupant.by Anthony P. Vanky.S.M

    Throughput, Risk and Economic Optimality of Runway Landing

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    Abstract This paper analyzes the optimal level of operations on a single runway used only for arrivals. Two risks associated with landing procedures are the risk of a wake vortex encounter and the risk of simultaneous runway occupancy. We develop optimization models to maximize successful landing operations while mitigating these risk factors. The risks are mitigated by enforcing go-around procedures when separation distances are too small. In our capacity optimization, we assume that the goaround procedures are strictly enforced (making the operations risk-free) and their execution is absolutely safe. We develop two models as decision support tools which mimic the system dynamics and provide new insights into the landing process. One model maximizes the risk-free throughput (number of successful landings per unit of time) with and without wake-vortex effects. The second model accounts for dollar benefits and go-around costs in optimizing the system operations' level. This model maximizes expected net economic outcome (total dollar benefits minus total go-around costs) by adjusting the rate of landing attempts. Through these models, we calculate the maximum (risk-free) achievable throughput in the system. This provides a new definition of the landing capacity of the runway taking into account the probabilistic behavior of operations. Several numerical examples are given

    Full Issue (26.1, Summer 2015)

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    Ascending Higher: The Story of Aviation at Western

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    Western Michigan University College of Aviation celebrates 75 years of aviation education. From modest beginnings in 1939, our curriculum has expanded to offer degrees in aviation flight science, aviation management and operations, and aviation maintenance technology. We currently have a fleet of advanced training aircraft, modern facilities in Battle Creek and more than 740 undergraduate students in the program. With this book, we take a look back. We celebrate the visionaries of the past who helped us realize our current successes. We commemorate the events and advancements in our storied aviation program. And we look to the bright future that lies before us.https://scholarworks.wmich.edu/books/1778/thumbnail.jp

    Space benefits: The secondary application of aerospace technology in other sectors of the economy

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    Over 580 examples of the beneficial use of NASA aerospace technology by public and private organizations are described to demonstrate the effects of mission-oriented programs on technological progress in the United States. General observations regarding technology transfer activity are presented. Benefit cases are listed in 20 categories along with pertinent information such as communication link with NASA; the DRI transfer example file number and individual case numbers associated with the technology and examples used; and the date of the latest contract with user organizations. Subject, organization, geographic, and field center indexes are included

    Aeronautical engineering: A continuing bibliography with indexes (supplement 278)

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    This bibliography lists 414 reports, articles, and other documents introduced into the NASA scientific and technical information system in April 1992

    Performance Measures to Assess Resiliency and Efficiency of Transit Systems

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    Transit agencies are interested in assessing the short-, mid-, and long-term performance of infrastructure with the objective of enhancing resiliency and efficiency. This report addresses three distinct aspects of New Jersey’s Transit System: 1) resiliency of bridge infrastructure, 2) resiliency of public transit systems, and 3) efficiency of transit systems with an emphasis on paratransit service. This project proposed a conceptual framework to assess the performance and resiliency for bridge structures in a transit network before and after disasters utilizing structural health monitoring (SHM), finite element (FE) modeling and remote sensing using Interferometric Synthetic Aperture Radar (InSAR). The public transit systems in NY/NJ were analyzed based on their vulnerability, resiliency, and efficiency in recovery following a major natural disaster
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