نتایج جستجو برای: railway
تعداد نتایج: 14390 فیلتر نتایج به سال:
Recently, social environment rapidly varies and it affects the trend of social infrastructure. Railway transportation which is typical social infrastructure is also affected by this trend. To meet this situation, the railway system needs a capability for gradual and short-term extension. To realize these requirements, an autonomous decentralised software architecture is proposed and its practic...
Electrification structures design for railway systems is a crucial and complex process, since it compounds plenty of infrastructure elements, design decisions, and calculation conditions. In this paper, an ontologydriven decision support system for designing complex railway portal frames is presented and developed. A knowledge-rules database has been also developed relying on experts knowledge ...
Simulation methods are widely used in railway planning and operation. However, at the moment there are no applicable solutions in the process simulation for a smooth transition among different infrastructure levels on the basis of a unified structure with consistent algorithm. In this paper, a multi-scale simulation model is designed with consideration of the level of detail of the investigated...
In this paper we consider the modeling and control of railway networks. The main aim of the control is to recover from delays in an optimal way by breaking connections and changing the departure of trains (at a cost). To model the controlled railway system we will use a switching max-pluslinear system description. We define the optimal control design problem for the railway network, and we show...
To satisfy the growing passenger transportation demands and improve the service quality in railway system, a more stable and robust timetable needs to be designed while considering highly utilized capacity. Acyclic timetable is extensively applied in large railway networks. In order to acquire the quality of timetable, analytical timetable stability analysis software PETER (Performance Evaluati...
Although modelling techniques for railway vehicle dynamics are well-developed, much of the development in railway vehicle condition monitoring has relied on the knowledge-based techniques where no analytical system model is employed and only qualitative or empirical system knowledge are used for fault diagnosis. In this paper, the model-based approach is proposed as an alternative for railway v...
1. Sir Malcolm Watson, m.d., ix.d., President. 2. Dr. C. A. Bentley, c.i.E., m.b., d.p.h., d.t.m. & h., Director of Public Health, Bengal. 3. Major H. Suhrawardy, o.b.E., m.d., E.R.C.s.i., d.p.hv Chief Medical Officer, E. B. Railway. 4. Major H. Lockvvood Stevens, Organising Secretary, Ross Institute. 5. Captain B. S. Chalam, e.R.c.p., e.R.E.p.s., Malariologist, E. B. Railway. 6. Dr. S. N. Sur,...
As the intelligent railway is the trend of current railway development, the paper aims to show an overview of the Railway Intelligent Transportation System (RITS) in China. Firstly, the current transportation situation in China is given and then some basic concepts of RITS are talked about as well. Secondly, the necessity of RITS is analyzed to show its strategic position. Then, the overall arc...
This paper deals with the use of Petri nets in modelling railway network and designing appropriate control logic for it to avoid collision. Here, the whole railway network is presented as a combination of the elementary models – tracks, stations and points (switch) within the station including sensors and semaphores. We use generalized mutual exclusion constraints and constraints containing the...
The paper presents the research of temporal data usage in the information systems (IS) for railway transport. In the research the IS artifact building phase has been executed. The models and methods oriented at the operation with the temporal objects of the railway transport system have been designed. The work takes into consideration the problems of the temporal objects presentation in the rel...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید