نتایج جستجو برای: multi periods

تعداد نتایج: 574292  

Journal: :Proceedings of the Japan Academy, Series A, Mathematical Sciences 1977

Journal: :Remote Sensing 2015
Lei Fan Qing Xiao Jianguang Wen Qiang Liu Rui Jin Dongqing You Xiaowen Li

High spatial resolution soil moisture (SM) data are crucial in agricultural applications, river-basin management, and understanding hydrological processes. Merging multi-resource observations is one of the ways to improve the accuracy of high spatial resolution SM data in the heterogeneous cropland. In this paper, the Bayesian Maximum Entropy (BME) methodology is implemented to merge the follow...

Journal: :Journal of environmental monitoring : JEM 2006
Gregor K Reid Ian McMillan Richard D Moccia

Aquatic total phosphorus (Tot-P) is measured at fish-cages in Lake Huron for environmental regulatory compliance. An improved understanding of how Tot-P is manifested in the near-field (<or=30 m) water column relative to reference sites within the same water body, current movement and farm structures is required to help interpret sample results and refine monitoring protocols where necessary. T...

Journal: :international journal of industrial mathematics 0
s. kordrostami‎‎ department of mathematics, lahijan branch, islamic azad university, lahijan, ‎iran.‎ m. jahani sayyad ‎noveiri department of mathematics, lahijan branch, islamic azad university, lahijan, ‎iran.‎

data envelopment analysis (dea) is a mathematical technique to evaluate the performance of firms with multiple inputs and outputs. in conventional dea models, the efficiency scores of decision making units (dmus) with non-negative inputs and outputs are evaluated in a special period of time. however, in the real world there are situations wherein performance of firms must be evaluated in multip...

2011
Hongyuan Fang Yi Cheng Songkai Yan

The mixed linear programming model is commonly recognized to be an effective means for searching optimal reservoir operation policy in water resources system. In this paper a multi-objective mixed integer linear programming model is set up to obtain the optimal operation policy of multi-reservoir water supply system during drought, which is able to consider the operation rule of reservoir-group...

2010
S. Baskar P. S. Ramkumar R. Kesavan

This paper presents a new heuristic algorithm useful for long-term planning of survivable WDM networks. A multi-period model is formulated that combines network topology design and capacity expansion. The ability to determine network expansion schedules of this type becomes increasingly important to the telecommunications industry and to its customers. The solution technique consists of a Genet...

Journal: :Numerische Mathematik 2004
Manuel Calvo Laurent O. Jay Juan I. Montijano Luis Rández

The so-called multi-revolution methods were introduced in celestial mechanics as an efficient tool for the long-term numerical integration of nearly periodic orbits of artificial satellites around the Earth. A multi-revolution method is an algorithm that approximates the map φNT of N near-periods T in terms of the one near-period map φT evaluated at few s ≪ N selected points. More generally, mu...

2015
Prasanna Kumar

This paper approaches Genetic algorithm for multi objective optimization of the multi item multi period procurement lot sizing problem. A mathematical model is developed to simulate raw material procurement lot sizing analysis for a real time valve manufacturing company. Model takes into account the constraints imposed by the budget, maximum order quantity and limited warehouse space. The analy...

Journal: :Monthly Notices of the Royal Astronomical Society 2022

ABSTRACT I report on a large-scale search for the orbital periods (P) of most known nova systems, by looking significant, coherent, and stable optical photometric modulation in two or more independent light curves taken mostly from large surveys TESS, Kepler, AAVSO, SMARTS, OGLE, ASAS, ZTF. have discovered 31 new periods. Further, measured 18 novae with evolved companions, to 30 per cent accura...

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