Results 21 to 30 of about 20,851 (255)
The Erd\H{o}s-Szekeres problem for non-crossing convex sets [PDF]
, 2013 We show an equivalence between a conjecture of Bisztriczky and Fejes T{\'o}th about arrangements of planar convex bodies and a conjecture of Goodman and Pollack about point sets in topological affine planes.
Dobbins, Michael G +2 more
core +1 more source
Građevinar, 2014 The testing of bearing capacity under static and fatigue loading is mandatory in case of prestressed concrete sleepers for switches and crossings. The authors present the static testing required according to EN13230-4:2009, and the optional dynamic ...
Dragoljub Drenić +2 more
doaj +1 more source
Enhancement of the stability of genetic switches by overlapping upstream regulatory domains [PDF]
, 2003 We study genetic switches formed from pairs of mutually repressing operons. The switch stability is characterised by a well defined lifetime which grows sub-exponentially with the number of copies of the most-expressed transcription factor, in the regime
A. Arkin +6 more
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European Transport Research Review, 2021 An amendment to this paper has been published and can be accessed via the original article.
Hitesh C. Boghani +10 more
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Train Type Identification at S&C
Journal of Advanced Transportation, 2020 The presented paper concerns the development of condition monitoring system for railroad switches and crossings that utilizes vibration data. Successful utilization of such system requires a robust and efficient train type identification.
Martina Kratochvílová +4 more
doaj +1 more source
Infrastructures, 2022 Previous studies have addressed railway turnouts (switches and crossings), but research on the performance of 1000 mm gauge turnouts is limited. At present, wooden sleeper structures are used at turnouts in Vietnam.
Tran Anh Dung, Said M. Easa
doaj +1 more source
Railway track condition assessment at network level by frequency domain analysis of GPR data [PDF]
, 2018 The railway track system is a crucial infrastructure for the transportation of people and goods in modern societies. With the increase in railway traffic, the availability of the track for monitoring and maintenance purposes is becoming significantly ...
Fontul, Simona +3 more
core +2 more sources
Under Sleeper Pads in Railway Track
Communications, 2014 Under sleeper pads appear to be suitable measure to improve track quality as a consequence of ballast bed protection against extreme stress. The paper comprises experience of under sleeper pads applications in the Czech Republic in two test sections ...
Otto Plasek +3 more
doaj +1 more source
Time-Explicit Simulation of Wave Interaction in Optical Waveguide Crossings at Large Angles [PDF]
, 1991 The time-explicit finite-difference time-domain method is used to simulate wave interaction in optical waveguide crossings at large angles. The wave propagation at the intersecting structure is simulated by time stepping the discretized form of the ...
Chaudhuri, Sujeet K. +2 more
core +2 more sources
The cardinality of the augmentation category of a Legendrian link [PDF]
, 2015 We introduce a notion of cardinality for the augmentation category associated to a Legendrian knot or link in standard contact R^3. This `homotopy cardinality' is an invariant of the category and allows for a weighted count of augmentations, which we ...
Ng, Lenhard +3 more
core +1 more source