Preparation for Earthquake in Railways

Prospects for Sustainable Railways

Tsallis and Levy statistics in the preparation of an earthquake

Precursory fracture induced electromagnetic (EM) emissions, rooted in opening cracks and ranging from MHz to kHz, with the MHz appearing earlier, are produced and detected both at laboratory and geophysical scale. Recently, we have proposed the following two epochs/stages model of EQ generation: (i) The final kHz part is triggered by the fracture of high strength and large asperities that are d...

Safety Functions in Railways

There are several ways to describe and structure safety rules for railways, and a few examples are given in the report. A tentative holistic framework for describing safety features in relation to safety rules is presented. The approach has been applied on rules needed to regulate the communication between different railway organisations and other parties.

Public Utility Characteristics of Railways in India

To serve Indian economy railways carry different category of freight traffics like coal, iron ore, food grains, steel, fertilizer and mineral oil, etc. Dispersal of some of these freights is limited compared to other traffics which ambit of outreach is quite large. Food grains and fertilizers are such freights which reach wider section of population, transporting thereby railways carry off its ...

Vertex Disjoint Paths for Dispatching in Railways

We study variants of the vertex disjoint paths problem in planar graphs where paths have to be selected from a given set of paths. We study the problem as a decision, maximization, and routingin-rounds problem. Although all considered variants are NP-hard in planar graphs, restrictions on the location of the terminals, motivated by railway applications, lead to polynomially solvable cases for t...