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Forecasting short term demand in the physical distribution environment /Sanders, Nada R. January 1986 (has links)
Thesis (Ph. D.)--Ohio State University, 1986. / Includes bibliographical references (leaves 261-272). Available online via OhioLINK's ETD Center.
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Using population-based incremental learning to optimize feasible distribution logistic solutionsLourens, Tobie 03 1900 (has links)
Thesis (MScEng (Industrial Engineering))--University of Stellenbosch, 2005. / This thesis introduces an adaptation of the Population-Based Incremental Learning (PBIL)
meta-heuristic implemented on a variant of the General Pickup and Delivery Problem. The
mapping of the customers in the problem and the vehicle routes on a time grid enables the
utilization of the powerful genetic search that the PBIL algorithm provides in liaison with
competitive learning. The problem consists of a number of customers who may at any time
of the day place an order on another customer for some package. The fleet of vehicles
travelling between the customers must then combine powers to pickup and deliver the
package as fast as possible without ever leaving their assigned routes. The solution to this
problem then, is a set of routes for the fleet that will minimize some percentile of the
delivery times between customers. The PBIL meta-heuristic provides the blueprint of the
final algorithm, where the final algorithm is actually just a normal PBIL algorithm with
some external solution generation and evaluation techniques employed. The final algorithm
can easily solve an instance of the problem in polynomial time, given that the resolution of
the time grid used is not too small.
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Heurísticas aplicadas a um estudo de caso de distribuição de pequenas encomendas utilizando a bicicleta / Applied heuristics for a case study of small order distribution by byciclePaiva, Eduardo Pereira Lima de, 1984- 26 August 2018 (has links)
Orientador: Orlando Fontes Lima Júnior / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo / Made available in DSpace on 2018-08-26T02:20:07Z (GMT). No. of bitstreams: 1
Paiva_EduardoPereiraLimade_M.pdf: 15061304 bytes, checksum: 0389c666bf0c3316bd357dbeeb9b2c54 (MD5)
Previous issue date: 2014 / Resumo: O serviço de entrega por bicicleta representa um mercado de prestação de serviços promissor e em crescimento. O transporte de carga movido por propulsão humana tem recebido bastante atenção por ser capaz de reduzir custos e emissão de poluentes em operações logísticas de curta distância e por aliviar a quantidade de veículos motorizados utilizados em centros urbanos. A distribuição de pequenas encomendas por bicicleta em área urbana de pequeno porte foi objeto deste trabalho. Com base nos métodos de Districting (divisão por distritos), de Clarke e Wright e Diagramas de Voronoi, realizou-se um estudo de caso envolvendo a distribuição de malotes no campus de Campinas da UNICAMP (Universidade Estadual de Campinas). Os resultados dessas aplicações foram comparados entre eles e em relação à situação existente, e as dificuldades e restrições para a implantação de serviços de bicicletas foram exploradas considerando-se a viabilidade econômica e social da substituição do veículo motorizado pelo veículo movido a propulsão humana / Abstract: The bicycle delivery service is a promising and growing service delivery market. Human propelled load transportation has received great attention these days for being able to reduce costs and pollution emission in short distance logistics operations, as well as to diminish the amount of motor vehicles in urban centers. The subject of this paper is the distribution of small orders by bicycle in small urban areas. Based on the Districting method (division by districts), Clarke and Wright Algorithm, and Voronoi Diagrams, a case study was developed considering the distribution of pouches in the campus of Campinas State University (Universidade Estadual de Campinas - UNICAMP), São Paulo, Brazil. The results of these applications were compared among themselves and to the actual situation, and the difficulties and restrictions imposed to the implementation of bicycle service delivery were explored from the point of view of the economic and social viability of motor vehicle replacement for human propelled vehicle / Mestrado / Transportes / Mestre em Engenharia Civil
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Die vestiging van verspreidingsdepots binne die Pretoria-Witwatersrand-Vereeniginggebied met spesiale verwysing na die biervervaardigingsbedryfstakGroenewald, Hugo 08 May 2014 (has links)
M.Com. (Transport Economics) / Please refer to full text to view abstract
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'n Analise van distribusiekoste en besparingsmoontlikhede vir die motoronderdelevervaardigers van die Suid-Transvaal, met spesiale verwysing na houerverkeerDu Plessis, Johannes Hendrik 02 March 2015 (has links)
M.Com. / Please refer to full text to view abstract
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The effective management of customer orders received by a pharmaceutical manufacturerBotha, Risca January 2016 (has links)
There is a great need for a pharmaceutical manufacturer to provide its customers with the right product at the right time, place and price and also to deliver the product in the right quantity and quality. Should pharmaceutical customers not receive their orders on time from the pharmaceutical manufacturer, the customers might face out-of-stock situations. As a result, the patients or customers might turn to an alternative product from a different pharmaceutical manufacturer, which has the required stock readily available. This could lead to loss in sales and even death amongst its customers. The main objective of this study was to determine the key factors that form part of the demand and operations planning strategies to ensure that these factors are in place to effectively manage and execute the supply chain and logistics processes to reduce possible out-of-stock situations amongst its customers. As a starting point to the study, an analysis was performed based on the review of relevant research and literature from various text books, journals, publications, as well as internet sources. The literature study covered various aspects such as demand planning, production planning, the use of different demand and operations planning strategies, as well as the importance of continuous internal and external customer service levels to ensure that customer orders are delivered on time. The analysis of the literature review was used to establish a theoretical basis for the design and structure of the questionnaire that was used as a research instrument in this study. A survey was conducted amongst the employees that are responsible for executing the supply chain and logistics processes within Aspen Pharmacare. These employees resided within the three main departments of the pharmaceutical manufacturer, namely, the Demand and Operations Planning, Production and Packing, as well as the Warehouse and Distribution departments. Each question posed in the questionnaire related to the role of each employee within these departments that are responsible for the logistics processes within Aspen Pharmacare. The empirical results from the study indicated that the respondents were in support that specific key factors are important for a pharmaceutical manufacturer to manage incoming customer orders efficiently and effectively to reduce possible out-of-stock situations amongst its end customers. However, the respondents also highlighted that there were a number of obstacles preventing them from implementing the key factors that are required to manage incoming customer orders more efficiently within the pharmaceutical manufacturer. Some of these obstacles include: the lack of pro- activeness; lack of accountability; and the lack of constant communication between the employees from the three main departments. Furthermore, incomplete hand-over information during shift changes amongst the employees of the Production and Packing department created unnecessary down-time. Also, the employees from the Warehouse and Distribution department were not informed timeously when changes to the production schedule were made. These obstacles will have a negative impact on the ultimate customer delivery dates and need to be addressed. The empirical results highlighted some recommendations to assist pharmaceutical manufacturing companies to more effectively and efficiently manage their incoming customer orders to reduce or eliminate any possible out-of-stock situations amongst its end customers. Some recommendations include: improved communication between the three main departments; to react immediately to out-of-stock products; and to ensure that internal and external customer service levels are adhered to at all times. The implementation of the recommendations based on the empirical findings of the study will assist the pharmaceutical manufacturing company to achieve excellence and to become a world-class supplier of generic pharmaceutical products. In this way, all incoming customer orders can be fulfilled on time.
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Forecasting short term demand in the physical distribution environment /Sanders, Nada R. January 1986 (has links)
No description available.
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A Dynamic Simulation of the Gasoline Distribution System During Periods of Normal and Restricted AvailabilityBamasi, Sheriar R. 01 January 1974 (has links) (PDF)
No description available.
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Discrete and continuous models for production-distribution systemsDasci, Abdullah. January 2001 (has links)
No description available.
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Modelling systems for an effective humanitarian supply chain for disaster relief operations in the SADC regionBaraka, Jean-Claude Munyaka January 2014 (has links)
Submitted in fulfillment of the requirements of the degree of Master of Technology: Industrial Engineering, Durban University of Technology, Durban, South Africa, 2014. / The SADC region has seen both man-made and natural disasters killing over 90 thousand people and affecting millions in the past 33 years. Most of these deaths were as a result of lack of infrastructure and preparedness. Looking at the challenges for providing relief to victims/evacuees throughout the entire disaster and post-disaster periods in the region, the emphasis of this thesis is on last mile transportation of resources, victims, emergency supplies, aiming to optimize the effectiveness (quickI response) and efficiency (low-cost) of logistics activities including humanitarian supply chain. A survey was used for data collection. Statistical analysis helped determine the impact of disaster relief chains and lead to the development of a mathematical model that shall equip the region with mechanisms for response and recovery operations. An EXCEL optimization tool was used to find the optimal way of transporting relief in the region in case of a disaster. / PDF Full-text unavailable. Please refer to hard copy for Full-text / M
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