پیوند اعضا از ارکان مهم سیستم‌‌های سلامت است و به درمان بسیاری بیماری‌‌های صعب‌العلاج کمک شایانی کرده است. روزانه 7 تا 10 نفر بیماران نیازمند در ایران علت نرسیدن به‌موقع عضو پیوندی دنیا می‌­روند. با توجه بحرانی­‌بودن زنجیره برای سلامتی انسان، مدیریت برنامه‌ریزی این اهمیت فراوانی برخوردار انتقال بیمار یک بیمارستان محل تأثیر ثانیه‌‌ها بر کیفیت مورد­انتقال موفقیت پیوند، بسیار حائز پژوهش، مدلی ریاض...

the capacitated vehicle routing problem (cvrp) is a well-known combinatorial optimization problem that holds a central place in logistics management. the vehicle routing is an applied task in the industrial transportation for which an optimal solution will lead us to better services, save more time and ultimately increase in customer satisfaction. this problem is classified into np-hard problem...

the inventory routing problem (irp) arises in the context of vendor-managed systems. this problem addresses jointly solving an inventory management problem and a vehicle routing problem. in this paper, we consider a multi-depot multi-vehicle inventory routing problem in which suppliers produce one type of product to be delivered to customers during a finite time horizon. we propose a two-phase ...

stochastic approach to vehicle routing problem: development and theories abstract in this article, a chance constrained (ccp) formulation of the vehicle routing problem (vrp) is proposed. the reality is that once we convert some special form of probabilistic constraint into their equivalent deterministic form then a nonlinear constraint generates. knowing that reliable computer software for lar...

one of the important issues in transportation and logistics systems is vehicle routing problem (vrp). the vehicle routing problem is concerned with finding efficient routes of minimum total cost, beginning and ending at a central depot, for a fleet of vehicles to serve a number of customers. on the other hand, as a result of the increasing environmental concerns, economic problems and pressure ...

One of the most vital aspects emergency management studies is development and examination post-disaster search rescue activities treatment facilities. such issues to be considered while performing these operations reach disaster victims within minimum time plan logistics in efficient manner possible. In this study, problem planning debris scanning with Unmanned Aerial Vehicles after an earthqua...

using greedy clustering method to solve capacitated location-routing problem with fuzzy demands abstract in this paper, the capacitated location routing problem with fuzzy demands (clrp_fd) is considered. in clrp_fd, facility location problem (flp) and vehicle routing problem (vrp) are observed simultaneously. indeed the vehicles and the depots have a predefined capacity to serve the customerst...

in this study the location routing problem with fuzzy parameters is taken into account, this problem involves determining the location of the depots and routing of the vehicles in order to serve the customers. in this study a location routing problem with fuzzy travel times and due dates is considered and two objective models are proposed. the considered objectives are minimizing the total cost...