Browsing by Keywords "Operations research"
Now showing items 1-20 of 34
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Age-based vs. stock level control policies for a perishable inventory system
(2001)In this study, we investigate the impact of modified lotsize-reorder control policy for perishables which bases replenishment decisions on both the inventory level and the remaining lifetimes of items in stock. We derive ... -
An algorithm based on facial decomposition for finding the efficient set in multiple objective linear programming
(Elsevier, 1996)We propose a method for finding the efficient set of a multiple objective linear program based on the well-known facial decomposition of the efficient set. The method incorporates a simple linear programming test that ... -
A branch and price approach for routing and refueling station location model
(Elsevier, 2016)The deviation flow refueling location problem is to locate p refueling stations in order to maximize the flow volume that can be refueled respecting the range limitations of the alternative fuel vehicles and the shortest ... -
A characterization of the optimal set of linear programs based on the augmented lagrangian
(Taylor & Francis, 1999)It is proved that in a certain neighborhood of the optimal set of multipliers, the set of minimizers of the augmented lagrangian nmction generates a new characterization of the optimal solution set of the linear program. -
Componentwise bounds for nearly completely decomposable Markov chains using stochastic comparison and reordering
(Elsevier, 2005)This paper presents an improved version of a componentwise bounding algorithm for the state probability vector of nearly completely decomposable Markov chains, and on an application it provides the first numerical results ... -
Data dependent worst case bound improving techniques in zero-one programming
(Elsevier BV, 1991)A simple perturbation of data is suggested for use in conjunction with approximation algorithms for the purpose of improving the available bounds (upper and lower), and the worst case bounds. The technique does not require ... -
Duality, area-considerations, and the Kalai–Smorodinsky solution
(Elsevier, 2017)We introduce a new solution concept for 2-person bargaining problems, which can be considered as the dual of the Equal-Area solution (EA) (see Anbarcı and Bigelow (1994)). Hence, we call it the Dual Equal-Area solution ... -
Dynamic lot sizing and tool management in automated manufacturing systems
(Elsevier, 2002)The overall aim of this study is to show that there is a critical interface between the lot sizing and tool management decisions, and these two problems cannot be viewed in isolation. We propose "ve alternative algorithms ... -
Effect of load, processing time and due date variation on the effectiveness of scheduling rules
(Taylor & Francis, 2002)In real manufacturing environments, variations in production factors (i.e. pro- cessing time, demand, due-dates) are inevitable facts. All these dynamic changes, together with random disturbances (e.g. machine breakdowns) ... -
Efficiency of the Turkish stock exchange with respect to monetary variables: a cointegration analysis
(Elsevier BV, 1996)In this study, we test the semistrong form of the efficient market hypothesis in Turkey by using the recently developed techniques in time series econometrics, namely unit roots and cointegration. The long run relationship ... -
Endogenous effects of hubbing on flow intensities
(Springer, 2016)Location of hub facilities and the allocation decisions in transport networks endogenously affect both the flow intensities and the transportation costs. Since the introduction of the hub location problem to the operations ... -
An equipment replacement problem with dynamic production planning and capacity considerations
(Taylor & Francis, 1996)In this paper, we propose a 0-1 integer programming formulation for an equipment replacement problem in which the demand of a product varies from period to period and different types of equipment with different production ... -
Evaluation of mobilization and deployment plan of an armored battalion
(Military Operations Research Society, 2005)Being ready for war as soon as possible and with minimum casualties during the crises is the first mission of the troops. Mobilization and deployment plans arise as the most important tools for Army as they cover all the ... -
An evaluative study of operation grouping policies in an FMS
(Kluwer Academic Publishers, 2003)The increased use of flexible manufacturing systems to provide customers with diversified products efficiently has created a significant set of operational challenges for managers. This technology poses a number of decision ... -
A general theory on spectral properties of state-homogeneous finite-state quasi-birth-death processes
(Elsevier, 2001)In this paper a spectral theory pertaining to Quasi-Birth–Death Processes (QBDs) is presented. The QBD, which is a generalization of the birth–death process, is a powerful tool that can be utilized in modeling many stochastic ... -
A goal programming approach to mixed-model assembly line balancing problem
(Elsevier, 1997)In this paper, a binary goal programming model for the mixed-model assembly line balancing (ALB) problem is developed. The model is based on the concepts developed by Patterson and Albracht [1] and the model of Deckro and ... -
The green network design problem
(Elsevier, 2019)Logistics activities are at the heart of world trade, but they also have unintended consequences on the environment due to the use of land, energy, and other types of natural resources. The significant energy usage by the ... -
Hyperbolic efficiency and return to the dollar
(Elsevier BV, 2002)This paper, after establishing the relations between hyperbolic graph measure of technical efficiency and the radial measures of technical efficiency, shows that the dual, cost and revenue interpretation of the hyperbolic ... -
An integrated evaluation of facility location, capacity acquisition, and technology selection for designing global manufacturing strategies
(Elsevier BV, 1992)Emergence of global markets enhanced the emergence of global firms which have plants in different countries and implement an integrated management style. Due to the intensive competition in global markets, manufacturing ... -
Job shop scheduling with beam search
(Elsevier Science B.V., Amsterdam, Netherlands, 1999)Beam Search is a heuristic method for solving optimization problems. It is an adaptation of the branch and bound method in which only some nodes are evaluated in the search tree. At any level, only the promising nodes are ...
