منابع مشابه
assessment of the efficiency of s.p.g.c refineries using network dea
data envelopment analysis (dea) is a powerful tool for measuring relative efficiency of organizational units referred to as decision making units (dmus). in most cases dmus have network structures with internal linking activities. traditional dea models, however, consider dmus as black boxes with no regard to their linking activities and therefore do not provide decision makers with the reasons...
Irrigation Pumping Plant Efficiency
Rising energy costs have increased the cost of pumping to the point that many farmers are finding irrigation to be unprofitable or only marginally profitable. Fortunately, however, pumping costs are an item that farmers have some degree of control. Pumping costs often are higher than they need be for two reasons: 1.) more water is pumped than is necessary, and/or, 2.) the pumping plant operates...
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Increasing concerns about energy and emissions from fuel consumption in gas turbines has attracted many researchers to protect the environment and reduce pollutants in the world. The main objective of this paper is to investigate the increasing efficiency of three-stroke gas turbine operation based on the technical analysis of the operation of three-axis gas turbine cycles with non-design condi...
متن کاملModelling the Differential Pumping of the TASCA Gas-Vacuum System
The scientific program at the TASCA gas-filled separator [1] requires the highest possible UNILAC beam intensities. Presently, they are of the order of one particle microampere and a significant increase is in preparation. To make use of these intensities a windowless differential pumping system (DPS) was installed and a computer program was developed to simulate vacuum conditions at various se...
متن کاملMeasuring the efficiency of decision making units
A nonlinear (nonconvex) programming model provides a new definition of efficiency for use in evaluating activities of not-for-profit entities participating in public programs. A scalar measure of the efficiency of each participating unit is thereby provided, along with methods for objectively determining weights by reference to the observational data for the multiple outputs and multiple inputs...
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ژورنال
عنوان ژورنال: ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations
سال: 2016
ISSN: 2414-0341,1029-7448
DOI: 10.21122/1029-7448-2016-59-4-338-352