نتایج جستجو برای: railway productivity indicators
تعداد نتایج: 205436 فیلتر نتایج به سال:
Technical advances in networks, embedded computing, and wireless communications are leading to the next generation of complex intelligent systems called CyberPhysical Systems (CPS). CPS promises to transform the way we interact with the physical world. Efficient and reliable operation of the CTCS-3 (Chinese Train Control System Level 3) is great protection of the national economy and public saf...
Railway planners have several tools to simulate the operation. Simulation allows the evaluation of the railway system’s quality by different points of view. Analyses of timetable stability and robustness include several indicators: recovery time and total delay among others. This paper formulates a model to describe the delay on a railway line. The total delay is characterized as a polynomial f...
Restructuring of European railway companies has resulted in creating new subjects within railway systems infrastructure managers (IM) on the one hand and railway operators (RO) on the other. In this paper we examine the efficiency and rank different business strategies of railway infrastructure managers using the combined AHP/DEA method. Different strategies include different number of paths al...
Productivity improvement, as an efficient and effective way of using inputs,is the most important aim in any economy. The first step to improve each economic variable is the recognition of current situation. There is a lot of researchmeasuring TFP in macroeconomic level but all of them calculated effiecency and neglegted effectiveness.This study is based on institutional economic framework and ...
Studies focused on the possible use of spider webs as environmental pollution indicators. This was a first time ever attempt to use webs as indicators of polycyclic aromatic hydrocarbons (PAHs) pollution. The aim of the study was (a) to evaluate whether webs are able to accumulate PM-associated road traffic emissions and be analyzed for organic toxics such as PAHs, (b) to assess if the distance...
As the importance of ‘excellence’ increases in higher education, so too does indicators to measure research productivity. We examine how such might disproportionately benefit men by analysing extent which separate components Norwegian Publication Indicator (NPI), a bibliometric model used distribute performance-based funding institutions, amplify existing gender gaps Drawing from data for 43,50...
Automatic assessment of subjective characteristics of customers like politeness, satisfaction or competence could provide services companies with information needful for improving service quality. In this work, we construct a regression model for politeness estimation of customers, which uses a) set of linguistic indicators and b) manual estimations of expert(s). We apply the suggested methodol...
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