This paper presents two innovative contributions related to the combined AC/DC power flow in railway power supply systems (RPSS). First, most of the power flow equations (the linear ones) are expressed in a compact matrix form by using graph theory based protocol. Such approach simplifies the statement of the unified power flow problem and allows the train motion to be modeled without varying t...

" Sustainable management of railway infrastructure –a case study in analyzing the fate of copper along railway tracks " , 9th World Congress on Railway Research " Meeting the challenges for future mobility " , May 22-26, SNCF, Lille, France.

The performance of railway operations depends highly on the quality of the railway timetable. In particular for dense railway networks it can be a challenge to obtain a stable robust conflict-free and energy-efficient timetable with acceptable infrastructure occupation and short travel times. This paper presents a performance-based railway timetabling framework using an integrated approach on t...

Railway capacity has been a significant issue in the railway industry. Over the last few years, numerous approaches and tools have been developed to compute railway capacity. In this paper, we compute railway capacity to design a topological model for solving periodic train scheduling, developed in collaboration with the National Network of Spanish Railways (RENFE). This topological technique t...

The diesel engine is robust, has a long working life, and is fuel efficient. It has been used widely in ships, railway locomotives, and as a stationary engine to provide power, and there is increasing use worldwide in heavy duty and public transport vehicles and passenger cars. Dieselengined vehicles are widely used in underground mines and it is here that there is the highest human exposure.

BACKGROUND Railway suicide has significant adverse impacts for the victims, their family and friends, witnesses to the incident, general public and train network. There is no previous review on the socio-environmental factors and railway suicide. The research question asked in this review was: 'What socio-environmental risk and protective predictors are significantly associated with railway sui...

BACKGROUND Railway suicides strongly impact psychological and socioeconomic aspects of the railway company, its employees and possible eye witnesses. We aimed to assess the incidence of railway suicides compared with the total burden of suicides in Germany and its time trend over a 10-year observation period. METHODS From 1991 to 2000, a total of 8,653 fatal railway suicides were recorded by ...

In the paper, a hybrid clustering routing strategy is proposed for railway emergency ad hoc network, when GSM-R base stations are destroyed or some terminals (or nodes) are far from the signal coverage. In this case, the cluster-head (CH) election procedure is invoked on-demand, which takes into consideration the degree difference from the ideal degree, relative clustering stability, the sum of...

BACKGROUND In 2010, the "Tackling Suicide on the Railways" programme was launched as a joint initiative among Network Rail, the Samaritans and other key organisations such as the British Transport Police and train operators to achieve a 20% reduction in railway suicides from 2010 to 2015 in Great Britain. We report the most recent age and sex specific trends in railway suicide in England and Wa...