Transportation service procurement auctions are typically characterized by limited number of rounds and low profit margin. In this paper we address the bid determination problem for single-lane and combinatorial bids in the successive rounds of an auction, which maximizes the profit and also ensures winning. A profit factor (PF) is computed at each round using the industry average price for thi...

In this paper, a bi-objective mixed-integer linear optimization model for Closed-loop Supply Chain Network Design Problem (CLSCND) is developed. The proposed model includes both the forward and reverse directions and includes different types of facilities, namely, manufacturing/remanufacturing centers, warehouses, and disassembly centers. The first objective function tried to minimize the total...

The aim of a multi-mode resource-constrained project scheduling problem (MRCPSP) is to assign resource(s) with the restricted capacity to an execution mode of activities by considering relationship constraints, to achieve pre-determined objective(s). These goals vary with managers or decision makers of any organization who should determine suitable objective(s) considering organization strategi...

risk management is one of the nine project management processes, which provides positive results and minimizes the probability and consequences of adverse effects in the project.  in this article a zero-one linear programming model with multiple objectives is used to characterize the potential risks. the proposed model has two main objectives. the first objective is the minimization of the expe...

distribution is one of the most important topics in industrial engineering and logistics and supply chain that all organizations are dealing with it in the upper echelons and are looking for the optimum distribution of resources and equipment among the echelon. generally, it is seen that organizations cannot have a good distribution if there is not a suitable criterion for the distribution of e...

Scarf’s min-max order formula for the distribution-free risk-neutral newsvendor problem is a classical result in the field of inventory management. The min-max order formula provides, in closed-form, the order quantity that maximizes the worst-case expected profit associated with the demand of a single product when only the mean and variance of the product’s demand distribution, rather than the...

We consider a supply chain where a contract manufacturer (CM) serves a number of original equipment manufacturers (OEMs). Investment into productive resources is made before demand realization, hence the supply chain faces the risk of underor over-investment. The CM and the OEMs differ in their forecast accuracy and in their resource pooling capabilities, leading to a disparity in their ability...

Increasingly complex urban traffic conditions often challenge the express services with long delivery path and much more time as consumed. In this paper, a Traffic Impact Factor (TIF) is introduced to model the impact of urban traffic conditions on express services. Based on the TIF, an optimization model is constructed to minimize the delivery distance and the time consumed. In the solution , ...