نتایج جستجو برای: station using time
تعداد نتایج: 4692313 فیلتر نتایج به سال:
Fleet assignment models are used by many airlines to assign aircraft to flights in a schedule to maximize profit [Abara 1986, Hane et al 1995]. A major airline reported that the use of the fleet assignment model increased annual profits by more than USD100 million [www.informs.org, 2002] a year over three years. The results of fleet assignment models affect subsequent planning, marketing and op...
In this paper, dynamic PERT networks with finite capacity of concurrent projects are expressed in the framework of networks of queues. In this investigation, it is assumed that the system capacity is finite and new projects are generated according to a Poisson process. There is only one server in every service station and the discipline of queue is FCFS (Fist Come, First Served). Each activity ...
in this research the chaocity of precipitation time series in daily, weekly and monthly scales in the pole-kohneh and ghourbaghestan stations located in qarah-soo watershed is investigated. in order to reassure about the absence of stochastic behavior of the time series, method of surrogate data is applied. thereafter, the aperiodicity of the time series is investigated using power spectrum ana...
Drought monitoring is essential to determine, at short time intervals, the main characteristics of drought events, such as their duration, severity, and spatial distribution. To ensure that represents a useful tool for governmental plans aimed preventing or minimizing impacts, up-to-date information must be instantaneously accessible it provide high temporal resolution. This study presents syst...
Investigation and evaluation of dust and microstrip phenomena is one of the important values in the management of climate and environmental hazards in the Middle East, especially in the arid, western, southern and central parts of Iran. Methods and plans for studying this phenomenon and its management are of great importance and great value. According to studies on dust phenomena based on pre...
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