Abstract At present, PWM rectifier is widely used in various high power and voltage situations because of its energy, low harmonic content, constant bidirectional energy. The energy supply system subway traction based on shows the topology a dual transformer with three winding transformers four rectifiers parallel, which superior to modular model. Finally, correctness control strategy verified ...

We investigate the effects of mobile-sourced ridesharing via platforms like Uber, Lyft, and Didi Chuxing on the use of public transit systems. Our study uses trip-level data about Uber usage in New York City, turnstile data about subway usage, and trip-level data about taxicab and shared bike usage. We find that on the surface, ridesharing and subway usage are positively correlated. Exploiting ...

In this paper, we investigate how to increase the capacity of GSM (Global System for Mobile communications) radio interfaces in subway tunnel environments by means of antenna arrays and Space–Time (ST) receivers. We address the modeling, both theoretically and experimentally, of the multiple-antenna wireless channels encountered in subway tunnels. We demonstrate that propagation is conveniently...

is paper tries to build on traditional value capturemeasures, to estimate the potential of some of thesemechanisms for the Lisbon subway by examining their ability to mitigate the system’s operation and development costs. e study focus is on the municipality of Lisbon where this system mainly operates. is research uses spatial hedonic pricing models of the real estate of the region, calibrat...

OBJECTIVES Subway drivers experience various types of work-related problems during their driving, and those experiences can act as risk factors for depressive symptoms. This study was conducted to investigate the association between work-related problems and subway driver's depressive symptoms. METHODS We recruited all of the 961 current subway drivers of a subway company located in Seoul, So...

System dynamics simulation models provide a powerful and rigorous means of evaluating management options in dynamically complex settings such as a metro subway system. This paper explores how a system dynamics model has been used over several years to address a variety of management challenges at London Underground. Several short case illustrations are described to demonstrate how such models a...

OBJECTIVES This study aimed to find the prevalence and occupational risk factors for major psychiatric disorders among subway drivers in South Korea. METHODS Of all 998 current subway drivers, 995 participated in this study. The Korean version of the Composite International Diagnostic Interview (K-CIDI 2.1) was administered by trained interviewers to diagnose psychiatric disorders in all part...

Traditional control algorithms in Automatic Train Operation (ATO) system have some drawbacks, such as high energy consumption and low comfort. In this paper, two Intelligent Train Operation (ITO) models based on data mining for the subway train control are proposed combining with the driving experience. Firstly the training data set is sorted out and sieved out from the real train operation dat...

ASMs have been used at Siemens Corporate Technology to design a component in a software package called FALKO. Main purpose of FALKO is the construction and validation of timetables for railway systems. For simulation the whole closed-loop traffic control system is modelled within FALKO. The railway process model part of FALKO was formally specified using the ASM approach. C++ code is generated ...