Results 101 to 110 of about 217,691 (313)
Deep Underground Science and Engineering, EarlyView.This paper investigates the high‐pressure water jet‐pick combined rock‐breaking mode (HPC), which employs high‐pressure water jets to precut grooves on both sides of the picks. The rock‐breaking patterns and performance of the HPC method are obtained, and the auxiliary rock‐breaking mechanism of water jet grooving is revealed.
Jingjing Lu +6 more
wiley +1 more source
Perspektive integracije zapadnoevropskih železnica
Promet (Zagreb), 2012 The author first deal with the essence of integration processes on the EC member state railways to point out the problems related to the discontinuation of the state patronage over the railways. Forecasts refer to the introduction of the European 'Agency
Branislava Božinović, Zoran Bundalo
doaj +1 more source
Rail Privatisation: The Economic Theory [PDF]
, 1994 The purpose of this paper is to examine the relevance of economic theory to the rail privatisation proposals contained in the Railways Act 1993. After a review of the latest rail privatisation literature four major themes emerged: (1) Contestability ...
Nash, C.A. +3 more
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Deep Underground Science and Engineering, EarlyView.Abstract As tunnel construction advances in lengths and depths, the construction of tunnels in high geothermal environments has become increasingly common, raising significant fire risks. In this study, a 1:20 scale model tunnel test platform was constructed to investigate the effects of a high geothermal environment on fire behavior in tunnels during ...
Xiaoxian Fei +6 more
wiley +1 more source
Asphalt Mixtures with Limestone Aggregate for Base Layer
Romanian Journal of Transport Infrastructure, 2012 Mélanges asphaltiques sont des mélanges de granulats minéraux, de charge, du bitume et éventuellement des additifs, dans certaines proportions déterminées par la recette conçue au laboratoire.
Răcănel Carmen +3 more
doaj +1 more source
Testing for Economies of Scope in European Railways: An Efficiency Analysis [PDF]
In this paper, we conduct a pan-European effciency analysis to investigate the performance of European railways with a particular focus on economies of vertical integration.
Christian Growitsch, Heike Wetzel
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Critical expansion points: Mechanical signs of surrounding rock instability
Deep Underground Science and Engineering, EarlyView.This study proposes the Rock Bearing‐Expansion Model (RockBEM) with critical expansion points (CEPs) to quantify post‐peak damage stages in deep‐buried rock masses via plane strain compression test (PSCT). CEP hysteresis&interval ratios reveal bearing performance dynamics and failure severity, advancing mechanistic insights into deep underground rock ...
Jiaqi Wen +4 more
wiley +1 more source
STATISTICAL PROCESSING OF RESULTS OF TESTING OF STUDENTS
Вестник Самарского государственного технического университета. Серия: Психолого-педагогические науки, 2015 Provides statistical analysis of the results of testing of students involved in the experiment conducted by the Department of Higher Mathematics at the Samara State University of Railways, since the resulting test data (rates of assimilation of ...
Yulia V. Gumennikova +2 more
doaj
Container Train Operators in India: Problems and Prospects [PDF]
In India, railways are under the control of the government which is the sole provider of the infrastructure, operations and regulatory functions. Private participation, though very limited, was largely in the domain of infrastructure creation. In January
Gangwar, Rachna, Raghuram, G.
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Rail Policy in the European Community. [PDF]
, 1991 This paper begins by considering the reasons why the rail sector has long been considered a problem in European transport policy. These concern both the degree of government intervention and subsidy, which conflicts with the aim of a free international ...
Nash, C.A.
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