Results 241 to 250 of about 751,043 (293)
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Library Review, 1965
THE FUNCTION OF THE REFERENCE LIBRARIAN is to conduct requests for knowledge to known or to possible sources. He can sometimes do this by turning with arm‐length familiarity to a bay full of familiar friends —B.N.B., Besterman, Walford, Britannica, Willings ‐ and an increasing number and variety of bibliographical aids to specialized fields in current ...
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THE FUNCTION OF THE REFERENCE LIBRARIAN is to conduct requests for knowledge to known or to possible sources. He can sometimes do this by turning with arm‐length familiarity to a bay full of familiar friends —B.N.B., Besterman, Walford, Britannica, Willings ‐ and an increasing number and variety of bibliographical aids to specialized fields in current ...
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2013
This chapter addresses the classical task to decide which train runs on which track in a railway network. In this context a track allocation defines the precise routing of trains through a railway network, which usually has only a limited capacity. Moreover, the departure and arrival times at the visited stations of each train must simultaneously meet ...
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This chapter addresses the classical task to decide which train runs on which track in a railway network. In this context a track allocation defines the precise routing of trains through a railway network, which usually has only a limited capacity. Moreover, the departure and arrival times at the visited stations of each train must simultaneously meet ...
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Track for lightweight railways
Proceedings of the Institution of Civil Engineers - Transport, 1993The term ‘railway’ recalls the early days of wheeled transport and originates from the idea of a ‘way’ for carriages, where wheels are guided on defined tracks.
C. F. Bonnett +11 more
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Sustainability of Railway Tracks
2016The infrastructural growth of the railways has brought the railway track sustainability into a fresh perspective. Safe, stable, durable, and sustainable tracks are of paramount importance for the efficient function of the railways. In this paper, the development of the railway track from its inception to the present-day scenario has been presented ...
Sarvesh Chandra, Devanshee Shukla
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Modelling railway track geometry deterioration
Proceedings of the Institution of Civil Engineers - Transport, 2011Understanding track geometry deterioration decisively influences the planning and optimisation of track maintenance and renewal works and consequently the substantial related costs (savings) each year of every railway. To understand this deterioration it must be accurately modelled, paving the way towards its forecasting into the future.
Sakarya Üniversitesi/Mühendislik Fakültesi/İnşaat Mühendisliği Bölümü +2 more
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GPR for the Inspection of Industrial Railway Tracks
Proceedings, 2011ABSTRACTIndustrial railway tracks are important for the loading and unloading of goods and therefore for the railway system in general. Often, industrial tracks are embedded in concrete and/or asphalt to enable trucks and other traffic across rails. Thus, most of the construction is hidden from visual inspection.
Hugenschmidt, Johannes +2 more
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System for tracking multiple trains on a test railway track
2017Several problems may arise when multiple trains are to be tracked using two IP camera streams. In this work, real-life conditions are simulated using a railway track model based on the Pomeranian Metropolitan Railway (PKM). Application of automatic clustering of optical flow is investigated.
Zdzislaw Kowalczuk, Sylwester Fraczek
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Transactions of the American Society of Civil Engineers, 1891
The valuable paper by Mr. E. E. Russell Tratman upon the improvement of railway and street railway track, Transactions Am. Soc. C.
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The valuable paper by Mr. E. E. Russell Tratman upon the improvement of railway and street railway track, Transactions Am. Soc. C.
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Automatic Detection of Obstacle in Railway Track
SSRN Electronic JournalThe main aim of the work is to enhance the safety and efficiency of train operations. The system focuses on detecting obstacles on the railway track and automatically applying the train's brakes to prevent accidents. With the growing concerns over train collisions and safety incidents, the introduction of an automated system that can detect ...
Savitha AC +6 more
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Solving Railway Track Allocation Problems
2008The optimal track allocation problem (OPTRA), also known as the train routing problem or the train timetabling problem, is to find, in a given railway network, a conflict-free set of train routes of maximum value. We propose a novel integer programming formulation for this problem that is based on additional ‘configuration’ variables. Its LP-relaxation
Ralf Borndörfer, Thomas Schlechte
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