26 research outputs found
Selecting unique suppliers through winner determination in combinatorial reverse auction: scatter search algorithm
No full textCoordinating replenishment and marketing policies for non-instantaneous deteriorating items with imprecise deterioration free time and general deterioration and holding cost rates
No full textA Multi-Product Inventory Model for Selecting the First and Second Layers of Suppliers in a Supply Chain
No full textIn recent years, Supplier evaluation and selection, an important element in supply chain management, has been gaining attention in both academic literature and industrial practice. The Mixed integer multi-Objective non-Linear programming model (MIMONLP) presented in this paper aimed to evaluate and select the appropriate set of suppliers considering quantitative and qualitative criteria and in addition to selecting the first layer's suppliers which relate directly to the organization, analyses the characteristics of second-layers suppliers, and design a network to determine the flow rate of products and materials between buyers and best suppliers in both layers. Another important feature of this model is considering holding costs of different products over the planning horizon and quantity discounts for the first layer's suppliers at the same time. Finally, the model is solved by using goal programming approach and numerical examples are presented to test the performance of proposed model
Coordinating replenishment and marketing policies for non-instantaneous deteriorating items with imprecise deterioration free time and general deterioration and holding cost rates
No full textHub Covering Location Problem under Gradual Decay Function
No full text145-148This paper developed a mathematical model
framework using the single allocation strategy for hub covering location
problem. The model encompassed the transportation time covering under gradual
decay function. Within a certain transportation time for the origin and
destination nodes among two hubs, the route is fully covered, and beyond
another specified transportation time the route is not covered. Between these
two given service times, the coverage is linear for the routes. A tabu search
has been used to solve some problems such as CAB and AP. The quality of
solutions obtained using TS have been compared with the achieved one using
CPLEX solver. Plenty of experimental study evaluated the performance of the
gradual decay function
Supply chain coordination via two-way cooperative advertising contract considering competing retailers
No full textComparison between Two Algorithms for MultiDepot Vehicle Routing Problem with Inventory Transfer between Depots in a ThreeEchelon Supply Chain
No full textA New Approach for Supplier Selection Process from the Features of Second Layer Suppliers Point of View
No full textIn nowadays world competitive market, on account of the development of electronic media and its influence on shortening distances, companies require some core competencies in order to be able to compete with numerous competitors in industry and sustain their situation in such a market. In addition companies achieve this target are those which their processes perform great and exploit from competitive price, quality, guarantee, etc. Since some parameters such as price and quality are so dependent on the performance of company supply chain management, so the results can highly impress the final price and quality of products. One of the main processes of supply chain management is supplier selection process which its accurate implementation can dramatically increase company competitiveness. In presented article two layers of suppliers have been considered as a chain of suppliers. First layer suppliers are evaluated by two groups of criteria which the first one encompasses criteria belongs to first layer suppliers features and the second group contains criteria belong to the characteristics of second layer suppliers. One of the criteria is the performance of second layer suppliers against environmental issues. Then the proposed approach is solved by a method combined of concepts of fuzzy set theory (FST) and linear programming (LP) which has been nourished by real data extracted from an engineering design and supplying parts company. At the end results reveal the high importance of considering second layer suppliers features as a criteria for selecting the best supplier
