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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
61

A PCI Express to PCIX Bridge optimized for performance and area

Chong, Margaret J. (Margaret Jane), 1981- January 2004 (has links)
Thesis (M. Eng. and S.B.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, June 2004. / Includes bibliographical references (leaf 89). / This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections. / This thesis project involves the architecture, implementation, and verification of a high bandwidth, low cost ASIC digital logic core that is compliant with the PCI Express to PCIX Bridge Specification. The core supports PCI Express and PCIX transactions, x16 PCI Express link widths, 32 and 64-bit PCIX link widths, all PCI Express and PCIX packet sizes, transaction ordering and queuing, relaxed ordering, flow control, and buffer management. Performance and area are optimized at the architectural and logic levels. The core is approximately 27K gate count, runs at a maximum of 250 MHz, and is synthesized to a current standard technology. This thesis explores PCI Express, PCIX, and PCI technologies, architectural design, development of Verilog and Vera models, thorough module-level verification, the development of a PCI Express/PCIX system verification environment, synthesis, static timing analysis, and performance and area evaluations. The work has been completed in IBM Microelectronics in Burlington, Vermont as part of the MIT VI-A Program. / by Margaret J. Chong. / M.Eng.and S.B.
62

Modélisation et commande d'un système de trafic multimodal / Modelling and control of a multimodal traffic system

Smaili, Samia 11 January 2012 (has links)
Le trafic routier englobe plusieurs facteurs, entre autres la géométrie des infrastructures routières, le comportement des conducteurs, la diversité des flux de véhicules,etc...Les situations auxquelles sont confrontés les exploitants des réseaux routiers dépendent du type de réseau dont ils ont la charge. Cette complexité du trafic en a fait un domaine de recherche d'un intérêt croissant et ce depuis les premières études qui ont donné naissance au modèle LWR au milieu des années cinquante. Afin de modéliser le trafic sur un réseau routier, deux approches, complémentaires l'une de l'autre sont nécessaires. La première est la modélisation de l'écoulement qui permet de décrire l'évolution des flux de trafic sur un tronçon de route et l'affectation qui décrit la façon dont les usagers choisissent leurs itinéraire sur un réseau. L'objet de ces travaux de thèse est d'apporter une contribution à cette amélioration de la modélisation des flux de trafic, en se concentrant dans un premier lieu sur la modélisation d'un trafic autoroutier constitué de deux classes de véhicules: des véhicules particuliers et des bus. L'étude numérique du modèle se fait en adaptant le modèle de transmission cellulaire de Daganzo. Un estimateur des densités et autre des vitesses de ce trafic mixte sur un tronçon de route ont été présentés. Des résultats de stabilité dans les différents régimes de ce trafic ont été établis. Dans un second lieu sur la modélisation d'un trafic urbain multimodal constitué de trois classes de véhicules: aux deux classes précedement citées, est intégrée une nouvelle classe de bus à haut niveau de service BHNS ou BRT, classe qui tend à se propager au milieu urbain et suburbain et qui est perçue comme solution à de nombreux problèmes liés au trafic par les exploitants de la route.Nous proposons deux modèles pour modéliser la progression du BRT sur le réseau, puis nous développons une stratégie de régulation de ce système de tranport urbain trimodal.L'objectif de la régulation est double, veiller à la fluidité du trafic en général et le respect de positions réferences pour le mode bhns.L'architecture s'appuie sur la commande des systèmes en boucle fermée et utilise la commande prédictive généralisée. Nous avons proposé un modèle hybride de trafic routier basé sur le couplage d'un modèle macroscopique générique de second ordre et d'un modèle microscopique en coordonnées Lagrangiennes. Pour la validation de la bonne transmission de l'information à travers le schéma de couplage, nous avons étudié la propagation et la remontée d'une congestion. / The traffic includes several factors, including the geometry of the road infrastructure, driver behavior, the diversity of vehicle flow, etc ... The situations faced by network operators depend on the type of road network under their charge. This complexity has made traffic a research area of growing interest ever since the first studies that gave rise to the LWR model in the mid-fifties.To model the traffic on a road network, two approaches are complementary to each other are needed. The first is the flow modeling for describing the evolution of traffic flows on a stretch of road and the assignment that describes how users choose their route on a network. The purpose of this thesis work is to contribute to the improvement of the modeling of traffic flows, focusing in primarily on the modeling of a motorway traffic consists of two classes of vehicles: passenger cars and buses. The numerical study of the model is done by adapting the cell transmission model of Daganzo. An estimator for densities and speeds of the mixed traffic on a stretch of road have been submitted. Stability results in the different regimes of trafficking have been established. In the second place on the modeling of a multimodal urban traffic consists of three classes of vehicles: for the two classes mentioned above, is part a new class of high-level bus service class BRT, that tends to spread to urban and suburban which is seen as a solution to many problems related to traffic by the operators of route. We propose two models for the BRT and we develop a control strategie of this system of urban tranport trimodal (cars, buses and BRT). The purpose of the regulation of this strategy is twofold, to ensure the flow of traffic in general and respect for the positions references for the BRT mode. The architecture is based on the control of closed loop systems and uses the generalized predictive control. We have proposed a hybrid model of traffic based on the coupling of a generic second order macroscopic model and a microscopic model in Lagrangian coordinates. To validate the correct transmission of information through the coupling scheme, we have studied the spread and the rise of a congestion.
63

Optimization of bus crew rosters: an application of combinatorial mathematics

Bennett, Brian T. January 1967 (has links) (PDF)
Typescript Includes bibliographical references
64

Bus lanes with intermittent priority assessment and design /

Eichler, Michael David. January 2005 (has links) (PDF)
Thesis (M.A. in City and Regional Planning)--University of California, Berkeley, Fall 2005. / Title from PDF title page (viewed Dec. 13, 2007). "Fall 2005." Includes bibliographical references (p. 81-87).
65

Transit service contracting and cost efficiency /

McCullough, William Shelton. January 1900 (has links) (PDF)
Thesis (M.A. in Urban Planning)--University of California, Los Angeles. / Cover title. "UCTC No. 553." Includes bibliographical references (p. 93-99). Also available online.
66

Bus rapid transit and transit-oriented development in Austin, TX

Marx, Michelle 20 November 2013 (has links)
The Capital Metropolitan Transportation Authority is currently in the stages of implementing Austin’s first bus rapid transit line along one of the city’s principal urban corridors. The line will run approximately 20 miles, along North Lamar, Guadalupe and South Congress Avenue. Considering the key role that land use patterns play in determining ridership for mass transit systems, transit agencies are increasingly pursuing strategies to encourage transit-oriented development as a means of securing the success of their transit investments. Considering the relatively intense uses already existing along this corridor, the location of some of the city’s primary institutions along it, and its general importance in defining the “image” of the city, this corridor seems ideally situated to absorb significant density increases. The focus of this study, therefore, is to evaluate the general need for increased densities and transit-supportive development along Austin’s BRT starter route, to examine the overall ability of bus-based transit to generate development pressures, to outline some of the land use policies necessary for encouraging TOD, and finally, to suggest an ideal planning approach for encouraging transit-supportive development along Austin’s BRT corridor. / text
67

A systematic approach for improving predicted arrival time using historical data in absence of schedule reliability

Rawls, Allen Worthington. January 2008 (has links) (PDF)
Thesis (M.S.)--University of North Carolina Wilmington, 2008. / Title from PDF title page (viewed September 24, 2008) Includes bibliographical references (p. 73-74)
68

Network and urban form analyses an approach to routing bus transit in geographic information systems /

Lam, Shan-shan, Vicky. January 1997 (has links)
Thesis (M.Phil.)--University of Hong Kong, 1998. / Includes bibliographical references (leaves 111-125) Also available in print.
69

Network and urban form analyses : an approach to routing bus transit in geographic information systems /

Lam, Shan-shan, Vicky. January 1997 (has links)
Thesis (M. Phil.)--University of Hong Kong, 1998. / Includes bibliographical references (leaves 111-125).
70

Bus routing strategies in a transit oriented city : a case study of Kowloon Motor Bus (1975-1986) /

Po, Pui-man, Karen. January 2000 (has links)
Thesis (M. Phil.)--University of Hong Kong, 2001. / Includes bibliographical references (leaves 189-195).

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