نتایج جستجو برای: variable demand

تعداد نتایج: 400229  

2000
Hakan Polatoglu Izzet Sahin

We study a periodic-review inventory model where, in addition to the procurement quantity, price is also a decision variable. We develop a model where demand in each period is a random variable having a priceand, possibly, period-dependent probability distribution, with the expected demand decreasing in price. The model includes price limits and "xed ordering costs in addition to unit procureme...

2003
Thomas D. Dyer Rajendra V. Boppana

We evaluate the capabilities of MANETs in supporting multiple, simultaneous HTTP and multimedia streaming flows. The HTTP traffic is produced by several Web servers, each responding to a series of concurrent requests from multiple Web clients, and multimedia traffic is modelled as a variable bit-rate stream consisting of UDP packets. To see the impact of a routing protocol, we consider two on-d...

2001
J. R. DeShazo

We develop an easy to use demand estimation strategy for multi-site trips within a stated preference framework. With this model, we evaluate: 1) changes in the marginal value of onsite time, 2) changes in the marginal value of total time in the tour package, 3) changes in both the number and types of sites on consumer surplus, 4) changes in the variable costs of onsite time on the elasticity of...

Journal: :iau international journal of social sciences 2013
meysam musai

this article aims at identifying the factors involved in affecting the travel demand to iran. the hypothesis of the research specifies the variable of “domestic social unrest and insecurity” as the most significant obstacle that stands against an expansion of the demand for travel to iran. to test the above hypothesis, first several demand models that have been proposed to study demand for tour...

2005
Stuart J. Allen Timothy J. Lowe Rodney D. Traub Greg Kegler

Stuart J. Allen Reference: Jones, Philip C., Timothy J. Lowe, Rodney D. Traub, Greg Kegler. 2001. Matching Supply and Demand: The Value of a Second Chance in Producing Hybrid Seed Corn. Manufacturing & Service Operations Management. Vol. 3, No. 2, pp. 122-137. Introduction This is an attempt to fathom the approach of Jones, et al to the problem stated in the title. We assume that the reader has...

2012
Robert W. Galvin Hongyu Wu Mohammad Shahidehpour

This paper proposes a stochastic optimization model for the day-ahead scheduling in power systems, which incorporates the hourly demand response (DR) for managing the variability of renewable energy sources (RES). DR considers physical and operating constraints of the hourly demand for economic and reliability responses. The proposed stochastic day-ahead scheduling algorithm considers random ou...

Journal: :Journal of Intelligent and Fuzzy Systems 2014
Sibo B. Ding

The classic newsboy problem assumes the market demand to be a random variable. However, when the decision maker wants to expand the market share, he has to provide a subjective estimate of new market demand distribution due to the lack of historical data. Thus, randomness and uncertainty simultaneously appear in a newsboy problem. The aim of this work is to extend the analysis of the classic ne...

Journal: :مهندسی صنایع 0
samira mohabbatdar department of engineering مریم اسمعیلی department of engineering

demand is assumed constant in the classical economic order quantity (eoq) model. however, in the real world, the demand is dependent on many factors such as the selling price, warranty of product and marketing effort. in addition pricing and ordering quantity decisions are interdependent for a seller when demand for the product is price sensitive in the inventory models. these types of models a...

2002
David Godden John P. Brennan

The research reported in this paper has its origins in a wider project (e.g. Brennan et al. 1999a) examining economic dimensions of genetic diversity in the wheatgrowing industries of Australia and China. Part of this study involved the econometric estimation of the supply of and demand for genetic diversity in the Australian wheat industry. Especially since 1945, government policy has had a ma...

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