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1、-An internet-based logistics management system for enterprise chainsN. Prindezis, C.T. KiranoudisSchool of Chemical Engineering, National Technical University, 15780 Athens, GreeceReceived 13 September 2003; received in revised form 20 December 2003; accepted 27 January 2004Available online 10 Decem
2、ber 2004AbstractThis paper presents an Internet-Based Logistics Management System to coordinate and disseminate tasks and related information for solving the heterogeneous vehicle routing problem using appropriate metaheuristic techniques, for use in enterprise chainnetworks. Its architecture involv
3、es a JAVA Web applet equipped with interactive munication capabilities between peripheralsoftware tools. The system was developed in distributed software fashion technology for all puter platforms utilizing a Webbrowser, focusing on the detailed road network of Athens and the needs of the Athens Cen
4、tral Food Market enterprises. 2004 Elsevier Ltd. All rights reserved.Keywords: Decision support system; e-Logistics; Transportation; Vehicle routing problem1. IntroductionEnterprise chains are the business model of the present and future regarding markets that involve small andmedium pany sizes. Cle
5、arly, grouping activities towards a focused target facilitates an understandably improved market penetration guaranteed by a successfultrademarkofaleadingpanyinthefield.Several collaboration models that basically include franchising areintroduced as a part of this integrated process. Whensuch a netw
6、ork is introduced in order to e*ploit amercial idea or business initiative and subsequentlye*panded as market penetration grows, several management issues arise regarding the operations of the entirenetwork. Such a network is the ideal place for organizing and evaluating in a more centralized way se
7、veral ordinary operations regarding supply chain and logisticsInfact,toolsdeveloped fororganizingmanagementprocesses and operational needs of each individual pany, can be developed in a more centralized fashionand the services provided by the tool can be offered toeach network member to facilitate t
8、ransactions andtackle operations similarly. Web-based applicationsare an ideal starting place for developing suchapplications.Typically such systems serve as a central depot fordistributing mon services in the field of logistics.The mercial application is stored in a central serverand services are p
9、rovided for each member of the group.A prototype of such a server is described in a previouswork (Prindezis, Kiranoudis, & Marinos-Kouris,2003).Thispaperpresentsthepletedinternetsystemthat is installed in the central web server of the AthensCentral Food Market that deals with the integratedproblemof
10、distributionfor690paniesthatprisea unique logistics and retail chain of enterprises. Theneeds of each pany are underlined and the algorithms developed are described within the unified internet environment. The problem solved and servicesprovidedforeachpanyistheoneinvolvingdistribution of goods throu
11、gh a heterogeneous fleet of trucks.New insights of the metaheuristics employed are provided. A characteristic case study is presented to illustrate the effectiveness of the proposed approach for a real-world problem of distribution through the detailedroad network of Athens.2. Distribution through h
12、eterogeneous vehicle fleetsThe fleet management problem presented in this paper requires the use of a heterogeneous fleet of vehiclesthat distribute goods through a network of clients(Tarantilis, Kiranoudis, & Vassiliadis, 2003, 2004).Therefore, the system was designed in order to automatically gene
13、rate vehicle routes (which vehicles should de-liver to which customers and in which order), usingrational, quantitative, spatial and non-spatial information and minimizing simultaneously the vehicle costand the total distance travelled by the vehicles, subjectto the following constraints:l each vehi
14、cle has a predetermined load capacity, typically different from all other vehicles prising thefleet (heterogeneous nature),l the capacity of a vehicle cannot be e*ceeded,l a single vehicle supplies each customers demand,l the number of vehicles used is predetermined.The problem has an obvious mercia
15、l value and hasdrawntheattentionofORmunity.Itsgreatsuccess can be attributed tothe fact that it isa very interesting problem both from the practical and theoreticalpoints of view. Regarding the practical point of view,the distribution problem involved definitely plays a centralroleintheefficiencyoft
16、heoperationalplanninglevelof distribution management, producing economicalroutes that contribute to the reduction of distributioncosts, offering simultaneously significant savings in allrelated e*penses (capital, fuel costs, driver salaries). ItsImportanceinthepracticallevel,motivatedintensetheoretical work and the development of efficientalgorithms.FortheproblembyacademicresearchersandprofessionalsocietiesinOR/MS,resultinginanumberofpapersconcerningthedev
