http://eio.usc.es/eipc1/base/BASEMASTER/FORMULARIOS-PHP/MATERIALESMASTER/Mat_192405_trabajo%20para%20Borja%20Lafuente.pdf

Buyer vendor coordination models in supply chain management

The joint economic lot size problem: A review

This article reviews lot-size models which focus on coordinated inventory replenishment decisions between buyer and vendor and their impact on the performance of the supply chain. These so-called joint economic lot size (JELS) models determine order, production and shipment quantities from the perspective of the supply chain with the objective of minimizing total system costs. This paper first describes the problem studied, introduces the methodology of the review and presents a descriptive analysis of the selected papers. Subsequently, papers are categorized and analyzed with respect to their contribution to the coordination of different echelons in the supply chain. Finally, the review highlights gaps in the existing literature and suggests interesting areas for future research.

The joint economic lot size problem: a review

In this paper an integrated production-inventory model is presented for supplier, manufacturer and retailer supply chain, considering perfect and imperfect quality items. This model considers the impact of business strategies such as optimal order size of raw materials, production rate and unit production cost, and idle times in different sectors on collaborating marketing system. The model can be used in industries like textile and footwear, chemical, food, etc. An analytical method is employed to optimize the production rate and raw material order size for maximum expected average profit. An example is illustrated to study the behavior and application of the model.

A production-inventory model of imperfect quality products in a three-layer supply chain

An integrated production-inventory model with imperfect production processes and Weibull distribution deterioration under inflation

https://ir.nctu.edu.tw:443/bitstream/11536/29343/1/000171869400001.pdf

An integrated inventory model for a single vendor and multiple buyers with ordering cost reduction

Modem information technologies have become important means for manufacturing and retailing firms to gain such competitive advantages as lower logistics costs and securer customers' loyalty. In this paper, we investigate a joint inventory system where the vendor produces a single item for its sole buyer and the buyer sells the item to consumers with backorders allowed. Each production lot is delivered to the buyer in a number of shipments and consecutive shipments will be increased by a fixed factor. Both vendor and buyer are willing to participate in order processing time reduction by applying information technologies in order to decrease their joint total cost. The order processing time can be reduced by certain expenditures and will affect the lot-size decisions. An analytical model is developed for determining the optimal expenditure in order processing time reduction and lot sizes for both vendor and buyer. The numerical experiment along with sensitivity analysis is also performed to obtain s...

Order processing cost reduction in a joint vendor-buyer inventory system via the application of information technology

Comparative risk assessment is an evaluation process designed to rank environmental problems based on the severity of potential hazards. The purpose of this paper is to provide an effective statistical approach to analyze perceived environmental risks. Environmental problems, evaluative criteria, and other potential moderator variables need to be determined first, and then the risk perception data collected. Repeated measures analysis is used to first test for interactions between environmental problems and potential moderator variables. If there are no significant interactions, then the risk difference among environmental problems is tested unconditionally; otherwise the risk difference is tested conditionally. Cluster analysis for environmental problems is performed only when the risk difference is significant. The clustering results can be objectively determined by using the simultaneous T2 confidence intervals. Risk-based priority setting is made according to the clusters obtained. To illustrate this approach, an empirical study of comparative socioeconomic risks in Taiwan was conducted. Socioeconomic impacts areas including social security, quality of life, production cost, investment willingness, and economic resources are used as evaluative criteria. Results indicate that selected impact areas do affect relative risk differences among 24 environmental problems, and the difference is significant for each area. Therefore, cluster analysis is conducted separately for each impact area. Risk-based priority settings for clusters of environmental problems are reported.

An effective statistical approach for comparative risk assessment

In this paper, we investigate an integrated inventory system where a single vendor purchases and processes raw materials in oreler to deliver finished items to multiple buyers. The vendor and all buyers jointly invest in reducing the ordering cost (e.g., establishing electronic data interchange based ordering systems) to decrease their joint total cost. The amount of investment determines the planned ordering cost and hence affects their inventory replenishment decisions. An analytical model is developed to decide the optimal investment amount and lot sizes for both vendor and buyers. In addition, we apply an exponential ordering cost function to our general model to provide interesting insights of the model. Numerical results show that the integrated inventory system can benefit substantially from this ordering cost reduction investment.

York Y. Woo

Papers

An integrated inventory model for a single vendor and multiple buyers with ordering cost reduction

Order processing cost reduction in a joint vendor-buyer inventory system via the application of information technology

An effective statistical approach for comparative risk assessment

Investing in ordering cost reduction for integrated inventory systems