نتایج جستجو برای: simultaneous delivery and pickup

تعداد نتایج: 16867360  

Journal: :international journal of supply and operations management 2015
sanae larioui mohamed reghioui abdellah el fallahi kamal el kadiri

in this paper we address the vrpcd, in which a set of homogeneous vehicles are used to transport products from the suppliers to customers via a cross-dock. the products can be consolidated at the cross-dock but cannot be stored for very long as the cross-dock does not have long-term inventory-holding capabilities. the objective of the vrpcd is to minimize the total traveled distance while respe...

2016
Padmabati Chand J. R. Mohanty W. H. Freeman

The real-time vehicle routing problem with time windows and simultaneous delivery products and pickup wastage materials (RT-VRPTWDPPWM) is formulated as extension of VRP. The real-time delivery/pickup demands are served by capacitated vehicles with limited initial loads. Moreover, pickup services aren't necessarily done after delivery services in each route. A improved genetic algorithm ( ...

2013

The real-time vehicle routing problem with time windows and simultaneous delivery products and pickup wastage materials (RT-VRPTWDPPWM) is formulated as extension of VRP. The real-time delivery/pickup demands are served by capacitated vehicles with limited initial loads. Moreover, pickup services aren’t necessarily done after delivery services in each route. A improved genetic algorithm ( maste...

Journal: :European Journal of Operational Research 2013
Ran Liu Xiaolan Xie Vincent Augusto Carlos Rodríguez-Verjan

This paper addresses a vehicle scheduling problem encountered in home health care logistics. It concerns the delivery of drugs and medical devices from the home care company's pharmacy to patients' homes, delivery of special drugs from a hospital to patients, pickup of bio samples and unused drugs and medical devices from patients. The problem can be considered as a special vehicle routing prob...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده علوم پایه 1391

one of the applications of nanotechnology is use of carbon nanotubes for the targeted delivery of drug molecules. to demonstrate the physical and chemical properties of biomolecules and identify new material of drug properties, the interaction of carbon nanotubes (cnts) with biomolecules is a subject of many investigations. cnts is a synthetic compound with extraordinary mechanical, thermal, el...

2015
Eshetie Berhan

The problem of designing a set of routes with minimum cost to serve a collection of customers with a fleet of vehicles is a fundamental challenge, when the number of customers to be dropped or picked up is not known during the planning horizon. The purpose of this paper is to develop a vehicle routing Problem (VRP) model that addresses stochastic simultaneous pickup and delivery in the urban pu...

Journal: :Mathematics 2022

Customers’ expectations of timely and accurate delivery pickup online purchases pose a new challenge to last-mile delivery. When the goods sent customers are not received, they must be returned warehouse. This situation provides high additional cost. Parcel locker systems convenience stores have been launched solve this problem serve as payment stations. research investigates distribution in au...

Journal: :Swarm and evolutionary computation 2021

The Vehicle Routing Problem with Simultaneous Pickup-Delivery and Time Windows (VRPSPDTW) has attracted much research interest in the last decade, due to its wide application modern logistics. Since VRPSPDTW is NP-hard exact methods are only applicable small-scale instances, heuristics meta-heuristics commonly adopted. In this paper we propose a novel Memetic Algorithm efficienT local search Ex...

In this work, the capacitated location-routing problem with simultaneous pickup and delivery (CLRP-SPD) is considered. This problem is a more realistic case of the capacitated location-routing problem (CLRP) and belongs to the reverse logistics of the supply chain. The problem has many real-life applications of which some have been addressed in the literature such as management of liquid petrol...

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