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A Fully Decentralized Approach to Coordinating Transactional Processes in Peer-to-Peer Environments
(2004)Technical reportWith the proliferation of e-business, peer-to-peer style business collaboration becomes increasingly popular. In peer-to-peer environments each peer provides a set of services. These services can be composed to processes running over several peers. Although peer-to-peer environments inherently lack global control, some business processes nevertheless require global transactional guarantees, i.e., atomicity and isolation applied at the ...Report -
Railway Delay Management
(2004)Technical reportsWe consider delay management in railway systems. Given delayed trains, we want to find a waiting policy for the connecting trains minimizing the weighted total passenger delay. If there is a single delayed train and passengers transfer at most twice along fixed routes, or if the railway network has a tree structure, the problem can be solved by reduction to min-cut problems. For delayed passenger flows on a railway network with a path ...Report -
Self-evaluation report 1999-2003
(2004)This comprehensive report summarizes the work of the Institute for Transport Planning and Systems (Institut für Verkehrsplanung und Transportsysteme: IVT) from 1999 to 2004 against the background of changes in the department and inside the Institute: teaching, research, funding, publications, professional activities, and a SWOT analysis leading to a discussion of future strategy. Its analysis and detail expand on the chapters included in ...Report -
Fine-Grained Lazy Replication with Strict Freshness and Correctness Guarantees
(2004)Technical reportEager replication management is known to generate unacceptable performance as soon as the update rate or the number of replicas increases. Lazy replication protocols tackle this problem by decoupling transaction execution from the propagation of new values to replica sites while guaranteeing a correct and more efficient transaction processing and replica maintenance. However, they impose several restrictions on transaction models that are ...Report -
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ETH-Bibliothek, Archive und Nachlässe - Jahresbericht 2003
(2004)ETH-Bibliothek, Archive und Nachlässe - JahresberichtReport