Search for dissertations about: "rail operations"

Showing result 1 - 5 of 32 swedish dissertations containing the words rail operations.

2. 1. Simulation of rail traffic : applications with timetable construction and delay modelling

   Author : Hans Sipilä; Bo-Lennart Nelldal; Anders Holst; Jan Ekman; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Abstract : This thesis covers both applications where simulation is used on parts of the Swedish rail networks and running time calculations for future high-speed trains with top speed improvements on existing lines. Calculations are part of a subproject within the Green Train research program (Gröna tåget). READ MORE

4. 2. Simulation of rail traffic : Methods for timetable construction,delay modeling and infrastructure evaluation

   Author : Hans Sipilä; Bo-Lennart Nelldal; Thomas Siefer; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Järnvägsgruppen - Kapacitet; Järnvägsgruppen - Kapacitet; Transportvetenskap; Transport Science;

   Abstract : This thesis covers applications and proposes methods for using simulation in a more effectiveway and also in a wider context than normally used. One of the proposed methods deals withdelay modeling that can be used in a calibration process. READ MORE

5. 3. Adhesion in the wheel-rail contact

   Author : Yi Zhu; Ulf Olofsson; Anders Söderberg; Zili Li; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Adhesion; wheel-rail contact; contaminants; tribology; Järnvägsgruppen - Tribologi; The KTH Railway Group - Tribology;

   Abstract : To attract more customers and compete with other modes of transportation, railway transport needs to ensure safety, punctuality, high comfort, and low cost; wheel–rail adhesion, i.e., the transmitted tangential force in the longitudinal direction during driving and braking, plays an important role in all these aspects. READ MORE

6. 4. Incentives to innovations in road and rail maintenance and operations

   Author : Torbjörn Stenbeck; KTH; []
   Keywords : Social sciences; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP;

   Abstract : Worried voices in the Swedish road maintenance and operations industry claim that innovations and technical development has ceased in the last decades. One hypothesis is that it is an effect of the public tendering reform introduced in 1992. READ MORE

7. 5. Collaborative Tracking and Tracing – A Supply Chain Perspective

   Author : Vahid Mirza Beiki; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; logistics; wagon; rail; design.; supply chain; entities; collaborative; food; tracking and tracing T T ; actors;

   Abstract : The purpose of this thesis is to explore tracking and tracing (T&T) systems to develop the concept of “collaborative tracking and tracing” for the management of logistics operations.The thesis is based on extensive literature reviews, and four major empirical studies, including one structured interview study, one documentation review study, case studies of two Swedish fresh-fish supply chains (SCs) and a case study of the Volvo cars body components (VCBC) SC. READ MORE