Ralf W. Seifert

Learn More
To analyze the operation of an arbitrary AGV system under selected vehicle routing strategies, we present a simulation model that can handle multiple system layouts, a varying number of AGVs, and a varying number of pedestrians moving around the system. We introduce a dynamic vehicle routing strategy based on hierarchical simulation that operates as(More)
Two operational formats – mass customization and mass production – can be implemented to satisfy customer preference-based demand. The mass customization system consists of two stages – the initial build-to-stock phase and the final customize-to-order phase. The mass production system has a single stage, building products with predetermined specifications(More)
In addition to internal R&D, external knowledge is widely considered as an essential lever for innovative performance. This paper analyzes knowledge spillovers in supply chain networks. Specifically, we investigate how supplier innovation is impacted by buyer innovation. Financial accounting data is combined with supply chain relationship data and patent(More)
Keywords: Supply chain network design Carbon footprint Emission policy Supply chain responsiveness Functional/innovative products Green supply chain management a b s t r a c t Concern related to sustainability and greenhouse gases has grown among citizens as well as firms, which are increasingly committing to carbon emission reduction targets. However,(More)
This case was prepared by Professor Ralf W. Seifert as a basis for class discussion rather than to illustrate either effective or ineffective handling of a business situation. This case won the 2006 European Case Award, in the category Production and Operations Management, granted by ecch in association with Business Week. Rolf Reinschmidt, head of the(More)