To reduce the occurrence of accidents during train-to-train collision test, it is necessary to carry out research on derailment protection. According characteristics a method using U-steel as guard rail proposed. The protection range obtained through geometric relationship. ability and damage risks in different impact conditions, velocities, installation positions are studied. Additionally, sec...

On 1 January 2009, Oscar Grant was shot and killed in a subway station by Bay Area Rail Transit officers. This event was recorded by several passengers on their cellphones and later uploaded to the video-sharing website YouTube. The videos generated significant protests among online and offline communities, and were eventually used as evidence in the ensuing trial. This study employed a critica...

Siemens AG Rail Automation, fortiss GmbH, and the chair for Software and System Engineering at Technische Universität München set up a transfer project to apply the SPES modeling framework (SPES MF) to the Platform Screen Doors (PSD) function of the Siemens Train Guard MT system creating formal models for requirements and system functionality. Three documents provided by Siemens Rail were used ...

July-August 2012 Imagine you fly home from vacation with your one-and-ahalf-year-old son who is traveling for free as a “lap child.” In the airport parking lot, you put him into his forwardfacing car seat, where he sits much more contentedly than he did in the rear-facing one that was mandatory until his first birthday. After he falls asleep on the way home, you transfer him to his crib without...

in the fourth verse of the chapter tariq, human soul has been known to have a guard. commentators, however, have presented different views knowing human soul and its guard respectively as: 1- human spirit and divine angles, 2- all creatures and god, 3- animal power and human spirit. as one of the fundamental causes for disagreement lies in the philosophical tendencies of the commentators, this ...

this is the first report about adverse inhibitory effect of v-guard and e-guard gasoline additives against soil beneficial streptomyces. v-guard and e-guard gasoline additives are anti valve seat recession agents used in unleaded gas for old car engines in iran. they contaminate soil and groundwater by fuel leaks and spills. streptomyces are of the major contributors to the biological buffering...

in this paper effects of fractured sleepers on rail track vibration under moving wheelset have been investigated. two parallel rails of the track have been modeled as euler-bernoulli beams on elastic points as rail pads. also sleepers have been modeled as visco-elastic euler-bernoulli beams. it is assumed that, some sleepers under the rail track have been fractured and modeled by two beams. the...