نتایج جستجو برای: green transportation location problem
تعداد نتایج: 1256938 فیلتر نتایج به سال:
The stochastic transportation problem involves in many areas such as production scheduling, facility location, resource allocation, logistics management. Constructing an operable solving method has important theoretical and practical value. In this paper, we first analyze the characteristic and deficiencies of the existing stochastic programming methods, such as higher computation complexity. W...
in the literature hardly any attention is paid to solving a fuzzy fixed charge transportation problem. in this paper, we consider the fully fixed-charge transportation problem and try to find both the lower and upper bounds on the fuzzy optimal value of such a problem in which all of the parameters are triangular fuzzy numbers. to illustrate the proposed method, a numerical example is presented.
the linear multiobjective transportation problem is a special type of vector minimum problem in which constraints are all equality type and the objectives are conicting in nature. this paper presents an application of fuzzy goal programming to the linear multiobjective transportation problem. in this paper, we use a special type of nonlinear (hyperbolic and exponential) membership functions to ...
The article deals with opportunities to improve the sustainability of transport companies. analysis literature sources has shown a large number measures implemented by global community in order protect environment. greatest damage atmosphere among all modes is caused road transport. Many are related it. All actions were differentiated into three categories: structural changes, organisational ch...
In recent years, comprehensive researches have provided ample support for the supply chains in the coordinated decision-making framework. However, the issue of closed-loop supply chain coordination considering various transportation modes has not yet been addressed in the literature. In this paper, a two-echelon closed-loop supply chain consisting of a manufacturer and a retailer is investigate...
چکیده شبکه های هاب یکی از انواع مهم شبکه های حمل ونقل هستند که در زمینه های مختلفی مانند حمل ونقل هوایی، پست و مخابرات کاربرد دارند. از ویژگی های مهم این شبکه ها، امکان وقوع اختلال در عملکرد آن ها به دلایلی ازقبیل ازکار افتادن تسهیل های هاب یا عدم دسترسی به یال های ارتباطی است. در این مطالعه، مسئله مکان یابی یال هاب پوششی با تخصیص چندگانه، تحت شرایط اختلال یال های هاب بررسی می شود. برای ای...
Hubs are special centers that used for switching, transferring and handling freight or passengers in transportation systems. The hub location problem deals with locating hub facilities and allocating demand nodes to hubs in order to route the traffic between origin–destination pairs. Aiming at minimizing the total costs, maximizing utilization of transporters, maximizing the service level, etc....
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