Single Track Railway
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Estimação de velocidade de composições usando processamento de vídeo / Speed estimation.of trains using vídeo processing
This dissertation aims to study a method of estimating the speed of railway vehicles using video processing. The proposed system uses cameras disposed alongside railways to monitor traffic as well as estimate train speeds. Such a system would allow the machinist to have a backup control system, regardless of the control systems already used by the operator o
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/08/2011
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2. Decision making strategies for real time trains movement planning / Estrategias de decisão para o planejamento de circulação de trens em tempo real
Railways plays a major role in freight and passenger transportation in the whole world. The Brazilian railway system has suffered a process of abandon and deterioration from 1960 to 1990. Since 1990 the privatization of the national railways brought new investments and in the last years the demand for railway transportation has increased significantly. Railw
Publicado em: 2007
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3. Contribuição à análise da capacidade de processamento de trens cargueiros em linhas ferroviárias singelas no Brasil / Contribution to analysis of process capacity of cargo trains on single track railroad line in Brazil
The expessive growth of the railway sector due to the privatization of the operations since 1996, is increasing the participation of this mode in the brazilian transport matrix. However, this growth is obtained mainly from the replacement and increase of the rolling stock and the modernization of the traffic control system, and will soon reach some important
Publicado em: 2006
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4. A DYNAMIC INTERACTION MODEL OF TRACK RAILWAY STRUCTURAL ELEMENTS / UM MODELO DE INTERAÇÃO DINÂMICA ENTRE OS ELEMENTOS ESTRUTURAIS DE UMA VIA FÉRREA
In a railway, the vehicle interacts dynamically with a track superstructure (rails, rail pad and sleepers) and sub-structure (ballast, sub-ballast, sub- grade). Passengers comfort, environmental loading (ground vibration) and frequency of maintenance works of vehicles as well as of the track are deter- mined by the way all the structural elements interact. T
Publicado em: 2006
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5. O papel do sistema de informações no processo de planejamento: discussão utilizando a situação do transporte de cargas no eixo Rio-São Paulo / x
An example of an information system, to be used within a planning process, is presented. The chosen area is the interurban load transportation. Two modes of transportation are approached - the higway and the railway. The information System consists of two models: the first one, based on the Gravity Model, estiamtes the flow of load vehicles in several stretc
Publicado em: 1976
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6. Structure of recombinant rat UBF by electron image analysis and homology modelling.
We have studied the structure of recombinant rat UBF (rrUBF), an RNA polymerase I transcription factor, by electron microscopy and image analysis of single particles contrasted with methylamine tungstate. Recombinant rat UBF appeared to be a flat, U-shaped protein with a central region of low density. In the dominant projections, 2-fold mirror symmetry was s