نتایج جستجو برای: step fixed charge transportation problems
تعداد نتایج: 1178733 فیلتر نتایج به سال:
The production-transportation problem (PTP) is a generalization of the transportation problem. In PTP, we decide not only the level of shipment from each source to each sink but also the level of supply at each source. A concave production cost function is associated with the assignment of supplies to sources. Thus the objective function of PTP is the sum of the linear transportation costs and ...
We consider a special case of the general problem involving the routing of packages among vehicles in transportation networks. In this special case, the schedules of the vehicles are xed and packages are routed by transferring them between vehicles as these vehicles make stops according to their xed schedules. Since this problem is NP-Complete, we explore approximation algorithms for its soluti...
In this paper, we concentrate on developing a bi-fuzzy multi objective transportation problem (MOSTP) according to bi-fuzzy expected value method (EVM). In a transportation model, the available discount is normally offered on items/criteria, etc., in the form all unit discount (AUD) or incremental quantity discount (IQD) or combination of these two. Here transportation model is considered with ...
Selecting an appropriate transportation company is an important decision for an effective supply chain. This study attempts to solve transportation company selection problems initially addressed by Kulak and Kahraman in 2005, by adopting two methods. Consistent fuzzy preference relations presented by Herrera-Viedma et al. and fuzzy linguistic preference relations (fuzzy LinPreRa) developed by W...
The Intelligent Transportation System (ITS) provides wireless and mobile communication between vehicles and infrastructure to improve the safety of transportation and make the journey more enjoyable. This system consists of many fixed and mobile nodes (Vehicles, Trains, Vessels, Air planes), Wireless and Wired Telecommunication Technologies to exchange information between mobile nodes or betwee...
in this thesis we will present three topics. we define approximate fixed points in fuzzy normed spaces. also we obtain some necessary and sufficient conditions on the existence of? -fixed points for ? > 0. at the continue some results about approximate fixed points for a class of non-expansive maps on g-metric spaces are obtained and we define approximate fixed points in partial metric spa...
Battery technology is the key bottleneck in many cyberphysical systems (CPS). For green-energy CPS transportation applications, such as hybrid electrical vehicles (HEVs) and plug-in HEVs (PHEVs), the battery system design is mostly based on lithium-ion rechargeable electrochemical battery technology, which is bulky, expensive, unreliable, and is the primary roadblock for PHEV adoption and marke...
Battery technology is the key bottleneck in many cyberphysical systems (CPS). For green-energy CPS transportation applications, such as hybrid electrical vehicles (HEVs) and plug-in HEVs (PHEVs), the battery system design is mostly based on lithium-ion rechargeable electrochemical battery technology, which is bulky, expensive, unreliable, and is the primary roadblock for PHEV adoption and marke...
In biomolecule mass spectrometry, peptides are usually ionized by an acidic solvent or matrix. It is generally accepted that the mobilization of attached protons weakens backbone bonds and facilitates peptide fragmentation. While this is often advantageous, it can lead to a multiplicity of fragment ions (both N-terminal an, bn and C-terminal yn ions). Formation of too many types of fragment ion...
Abstract: This paper presents a sensitivity analysis to multiobjective transportation problem. The proposed approach yields to maximum tolerance percentages in multiobjective transportation problem. The weighted sum approach is used to solve the multiobjective transportation problem. The proposed approach allows changing in both the weights and the objective function coefficients and the right ...
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