نتایج جستجو برای: high speed rail operations

تعداد نتایج: 2300653  

2005
Teruo Kobayashi

In 2001, railways in Japan carried 21.79 billion passengers (25.1% of all passenger transport) or 384.5 billion passenger-km (27% of all passenger transport). Rail freight totalled 59 million tonnes (1.0% of all freight transport) or 22.2 billion tonnekm (3.8% of total), clearly indicating that Japanese railway operators are almost exclusively passenger companies. Following the 1987 privatizati...

ژورنال: Journal of Railway Research 2018
Sarafrazi, Vahid, Talaee, Mohammad Reza,

Speed is the created air flow as well as slipstream effects as the trains move. These effects can have some level of impact on fuel and energy efficiency  of  the  train,  but  their  other  important  outcome  is  the emergence of turbulent flows at higher speeds which can cause aerodynamic  drag  forces  followed  by  noise  and  vibration.  Thus, slipstream effects have significant importanc...

Journal: :IEEE Transactions on Fuzzy Systems 2023

High-speed train delay prediction has always been one of the important research issues in railway dispatching. Accurate and interpretable can enable staff to implement preventive measures scheduling decisions advance, guide relevant departments cooperate completing complex transportation tasks, so as improve rail transit operations, service quality, efficiency operation. This article proposes a...

2016
Subharthi Banerjee Michael Hempel Hamid Sharif

High Speed Railway (HSR) provides its customers not only safety, security, comfort and on-time commuting, but also a fast transportation alternative to air travel or regular passenger rail services. Providing these benefits would not be possible without the tremendous growth and prevalence of wireless communication technologies. Due to advances in wireless communication systems, both trains and...

2009
Bar Güne

Railways, which had long been neglected in Turkey, reclaim their significance once more with the new investments that are being made in recent years. In correlation with growing demand for transportation, the need for high-speed railway lines and for bridges and viaducts, which constitute integral components of railways, increases by the day. In many European states, there are railways that can...

2017
Yuhui Zhou Shaohua Wang Xi Mei Wangling Yin Chunfeng Lin Qingwu Hu Qingzhou Mao

Railway tunnel clearance is directly related to the safe operation of trains and upgrading of freight capacity. As more and more railway are put into operation and the operation is continuously becoming faster, the railway tunnel clearance inspection should be more precise and efficient. In view of the problems existing in traditional tunnel clearance inspection methods, such as low density, sl...

The evaluation and control of the trains induced vibrations needs even more attention in the case of underground tracks which passes near to monuments and historical sites. The rail corrugations which occur due to the wheels’ impulse loads during the operation period of underground railway tracks, usually amplify the ground borne noise and vibration. In the current study, the mentioned phenomen...

Journal: :international journal of electrical and electronics engineering 0
leila safari seyed javad azhari

this paper proposes a low voltage (±0.55v supply voltage) low power (44.65µw) high common mode rejection ratio (cmrr) differential amplifier (d.a.) with rail to rail input common mode range (icmr), constant transconductance (gm) and enhanced frequency performance. its high performance is obtained using a simple negative averaging method so that it cancels out the common mode input signals at th...

2013
Sadhana Sharma Abhay Vidyarthi Shyam Akashe

A rail-to-rail class-AB CMOS buffer is proposed in this paper to drive large capacitive loads. A new technique is used to reduce the leakage power of class-AB CMOS buffer circuits without affecting dynamic power dissipation .The name of applied technique is LECTOR, which gives the high speed buffer with the reduced low power dissipation (1.05%) and reduced area (2.8%). The proposed buffer is si...

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