نتایج جستجو برای: simultaneous pickup and delivery

تعداد نتایج: 16867360  

Journal: :Transportation Research Part C-emerging Technologies 2021

One important requirement of modern supply chain management is the frequent exchange containers via multiple cross-docks which requires spatial and time synchronisations between different types vehicle. Moreover, as collaborations in logistics several companies become popular, more flexible extended models must be solved to consider needs companies. This high importance a new concept, Physical ...

Journal: :European Journal of Operational Research 2014
Seda Yanik Ugurlu Burçin Bozkaya Ronan deKervenoael

We analyze a business model for e-supermarkets to enable multi-product sourcing capacity through co-opetition (collaborative competition). The logistics aspect of our approach is to design and execute a network system where ‘‘premium’’ goods are acquired from vendors at multiple locations in the supply network and delivered to customers. Our specific goals are to: (i) investigate the role of pr...

Journal: :iranian journal of medical sciences 0
sara mirzaeian department of obstetrics and gynecology, ghaem hospital, school of medicine, mashhad university of medical sciences, mashhad, iran sedigheh ayati department of obstetrics and gynecology, ghaem hospital, school of medicine, mashhad university of medical sciences, mashhad, iran asieh maleki department of obstetrics and gynecology, ghaem hospital, school of medicine, mashhad university of medical sciences, mashhad, iran

abstract the prevalence of bilateral sudden sensorineural hearing loss (ssnhl) is less than 5% and the etiology of most cases is unknown. due to many structural and functional similarities between the kidney and inner ear, many conditions, diseases, and drugs have both renal and cochlear effects and toxicities. there are several reports of ssnhl in patients with crf, uraemic patient, hemodialys...

2007
Thomas Huth Dirk C. Mattfeld

This contribution gives an introduction to an integrated vehicle routing and resource allocation problem. We refer to it as the Swap Trailer Problem and formulate the mathematical model. After the analysis of dynamic decision problems and the development of a framework for this problem, we highlight the dynamic aspect of the problem. Two different solution strategies are supposed. Special prope...

2014
Alfredo Núñez Cristián E. Cortés Doris Sáez Bart De Schutter Michel Gendreau

A multiobjective-model-based predictive control approach is proposed to solve a dynamic pickup and delivery problem in the context of a potential dial-a-ride service implementation. A dynamic objective function including two relevant dimensions, user and operator costs, is considered. Because these two components typically have opposing goals, the problem is formulated and solved using multiobj...

2008
Martijn Mes Matthieu van der Heijden Peter Schuur

In this paper we consider a dynamic full truckload pickup and delivery problem with time-windows. Jobs arrive over time and are offered in a second-price auction. Individual vehicles bid on these jobs and maintain a schedule of the jobs they have won. We propose a pricing and scheduling strategy based on dynamic programming where not only the direct costs of a job insertion are taken into accou...

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