Ali Ghodratnama
Department of Industrial Engineering, College of Engineering, University of Tehran, Tehran, Iran
[ 1 ] - CREDIBILITY-BASED FUZZY PROGRAMMING MODELS TO SOLVE THE BUDGET-CONSTRAINED FLEXIBLE FLOW LINE PROBLEM
This paper addresses a new version of the exible ow line prob- lem, i.e., the budget constrained one, in order to determine the required num- ber of processors at each station along with the selection of the most eco- nomical process routes for products. Since a number of parameters, such as due dates, the amount of available budgets and the cost of opting particular routes, are imprecise (fuzz...
[ 2 ] - A Robust Optimization Approach for a p-Hub Covering Problem with Production Facilities, Time Horizons and Transporter
Hub location-allocation problems are currently a subject of keen interest in the research community. However, when this issue is considered in practice, significant difficulties such as traffic, commodity transportation and telecommunication tend to be overlooked. In this paper, a novel robust mathematical model for a p-hub covering problem, which tackles the intrinsic uncertainty of some param...
[ 3 ] - Assessment of Improvement of Preventive Maintenance Systems Related to the Civil Projects Using Concepts of Value Engineering (RESEARCH NOTE)
The purpose of this paper is using the concepts of value engineering (VE) in evaluating the improvement caused by preventive maintenance (PM) systems in construction project. A real case is used to show how we can implement the proposed method. VE is the systematic application of recognized techniques by multi-disciplined teams that identifies the function of a product or service, establishes a...
[ 4 ] - Analytic Network Process Based Strategic Planning for Iran's Trade Promotion Organization
Strategic planning in each organization identifies its orientation and coming priorities as all decisions to be adopted respect to the ensuing outcomes. Strategic decisions considering crucial and irreversible results should not be based on experience and judgments. This paper uses analytic network process (ANP) method for prioritization in strategic planning. ANP is mostly analogous to analyti...
[ 5 ] - Comparing Three Proposed Meta-heuristics to Solve a New p-hub Location-allocation Problem
This paper presents a new mathematical model, in which the location of hubs is fixed and their capacity is determined based on facilities and factories allocated to it. In order to feed the client's nodes, different types of vehicles of different capacities are considered, in which the clients are allocated to hubs, and types and numbers of vehicles are allocated to the factory's facilities. To...
[ 6 ] - Solving a new bi-objective model for a cell formation problem considering labor allocation by multi-objective particle swarm optimization
Mathematical programming and artificial intelligence (AI) methods are known as the most effective and applicable procedures to form manufacturing cells in designing a cellular manufacturing system (CMS). In this paper, a bi-objective programming model is presented to consider the cell formation problem that is solved by a proposed multi-objective particle swarm optimization (MOPSO). The model c...
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