in any supply chain, distribution planning of products is of great importance to managers. with effective and flexible distribution planning, mangers can increase the efficiency of time, place, and delivery utility of whole supply chain. in this paper, inventory routing problem (irp) is applied to distribution planning of perishable products in a supply chain. the studied supply chain is compos...

Motivated by the fixed routes problem, where the objective is to design a set of routes to be operated unchanged over a period of time, we study the vehicle routing problem with stochastic demands. An algorithm is developed based on a stochastic programming model with recourse. Computational experiments show that the algorithm compares favorably to existing algorithms. This research was support...

The Fixed Routes Problem is a variation of the Vehicle Routing Problem in which the routes that have to be constructed will be operated unchanged for an extended period of time while the customer demands within that period will vary. If, in a delivery scenario, a vehicle cannot satisfy the demand of a customer it musts return to the depot for replenishment before continuing its route. The fixed...

This study aims to develop a planning model for the deployment of flood emergency response materials under stochastic demands. For ease modeling, deterministic demand is first proposed, from which further extended. These models are used determine allocation transport truck routes and distribution stockpiled sites. The formulated as multiple integer network flow problems with special side constr...

abstractin this study, a vendor-managed inventory model is developed for a single-vendor multiple-retailer single-warehouse (sv-mr-sv) supply chain problem based on the economic order quantity in which demands are stochastic and follow a uniform probability distribution. in order to reduce holding costs and to help balanced on-hand inventory cost between the vendor and the retailers, it is assu...

This study presents a capacitated multi-facility location-allocation problem with stochastic demands based on a well-known distribution function. In this discrete environment, besides the capacitated facilities, we can employee the capacitated sub-source of each facility for satisfying demands of customers. The objective function is to find the optimal locations of facilities among a finite num...

This paper proposes a new model to estimate the mean and covariance of stochastic multi-class (multiple vehicle classes) origindestination (OD) demands from hourly classified traffic counts throughout the whole year. It is usually assumed in the conventional OD demand estimation models that the OD demand by vehicle class is deterministic. Little attention is given on the estimation of the stati...