http://repub.eur.nl/res/aut/6144/ List of Publications en http://repub.eur.nl/static-eur/img/logo.png http://repub.eur.nl http://repub.eur.nl/res/pub/38623/ 2013-02-04T00:00:00Z Cap and trade regulations along with an increasing consumer and company demand for green products and services constitute two major drivers for motivating corporations to adopt green practices. However, the adoption of such practices usually increases their operational costs. Therefore, the trade-off between “green” and cost-optimal policies is a common challenge for most organizations, at least in developed countries. The purpose of this paper is to assess alternative logistic network design options (applicable in most supply chains) taking into account both their cost and CO2 emissions performance. The applicability of the proposed methodology is illustrated through the design of a major white good retailer’s logistics network in the region of Greece. The results indicate that a company optimizes its cost performance by serving all its retail stores directly by truck through one central distribution center. On the other hand, a CO2 emissions optimal performance includes additional distribution centers and the employment of rail instead of truck transportation. Moreover, longer review periods, despite the higher holding and backorder costs, result in lower transportation costs and CO2 emissions. http://repub.eur.nl/res/pub/32049/ 2012-02-01T00:00:00Z The consideration of environmental issues has emerged as a topic of critical importance for today's globalized supply chains. The purpose of this paper is to develop a strategic-tactical decision support model to assist managers in evaluating the impact of environmental issues, related to transportation emissions, on the transport geography of a region. Specifically we provide a model that addresses: (i) supply chain network design, including port of entry and transportation mode, and (ii) decisions on using dedicated versus shared warehouses and transportation. The applicability of the proposed methodology is examined through the development of a sustainable supply chain network in the South-Eastern Europe region. The results indicate that in most cases using shared warehouses from Third Party Logistics operators improves both the cost and the environmental performance of a company. In all cases shared use of transportation operations minimizes the amount of CO2and PM emissions generated, while dedicated use minimizes costs. http://repub.eur.nl/res/pub/20374/ 2010-08-16T00:00:00Z The consideration of environmental issues has emerged as a topic of critical importance for today’s globalized supply chains. The purpose of this paper is to develop a strategic-tactical decision-support methodology to assist managers in evaluating the impact of environmental issues, related to transportation emissions, on the transport geography of a region. Specifically we provide a tool that addresses: (i) supply chain network design, including port of entry and transportation mode, and (ii) decisions on leasing vs. outsourcing of transportation and distribution centers. The applicability of the proposed methodology is examined through the development of a sustainable supply chain network in the South-Eastern Europe region. The results indicate that in most cases outsourcing distribution centers to Third Party Logistics operators improves both the cost and the environmental performance of a company. In all cases outsourcing of transportation operations minimizes the amount of CO2 and PM emissions generated, while leasing minimizes costs. http://repub.eur.nl/res/pub/20375/ 2010-08-16T00:00:00Z http://repub.eur.nl/res/pub/14836/ 2004-05-01T00:00:00Z We describe hybrid manufacturing/remanufacturing systems with a long lead time for manufacturing and a short lead time for remanufacturing. We review the classes of inventory strategies for hybrid systems in the literature. These are all based on equal lead times. For systems with slow manufacturing and fast remanufacturing, we propose a new class. An extensive numerical experiment shows that the optimal strategy in the new class almost always performs better and often much better than the optimal strategies in all other classes. http://repub.eur.nl/res/pub/2299/ 2004-01-01T00:00:00Z http://repub.eur.nl/res/pub/15429/ 2003-11-16T00:00:00Z Products which are sold through E-commerce or mail sales catalogues tend to have a much higher return rate than traditional products. The returns are especially problematic for seasonal products. To support decision making in these situations we study various options, which may be considered as strategic decisions, on handling the increased return flow. Closed form analytic expressions for optimal order quantities are obtained by solving the models developed for each option. Decision making guidelines on choosing between return options and some properties of the optimal solutions are presented. We also discuss estimation of the serviceable return rate in practical situations. http://repub.eur.nl/res/pub/231/ 2002-09-30T00:00:00Z We describe hybrid manufacturing/remanufacturing systems with a long lead time for manufacturing and a short lead time for remanufacturing. We review the classes of inventory strategies for hybrid systems in the literature. These are all based on equal lead times. For systems with slow manufacturing and fast remanufacturing, we propose a new class. An extensive numerical experiment shows that the optimal strategy in the new class almost always performs better and often much better than the optimal strategies in all other classes. http://repub.eur.nl/res/pub/1659/ 2000-09-21T00:00:00Z Products which are sold through E-commerce or mail sales catalogues tend to have a much higher return rate than traditional products. The returns are especially problematic for seasonal products. To support decision making in these situations we study various options, which may be considered as strategic decisions, on handling the increased return flow. Closed form analytic expressions for optimal order quantities are obtained by solving the models developed for each option. Decision making guidelines on choosing between return options and some properties of the optimal solutions are presented. We also discuss estimation of the serviceable return rate in practical situations.