Sascha Alda

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The drift away from monolithic towards to distributed, service-oriented application scenarios results in a couple of new challenges concerning the management of these systems. One particular area is the management of dependencies between services. Dependencies can have different appearances, for instance, functional dependencies, semantic integrity(More)
This article describes our conceivability of a software platform, which should facilitate collaboration, coordination and communication within virtual-networked cooperations in the context of civil and building engineering projects. These cooperations are characterized by highly dynamic structures and complex heterogeneities, frequently leading to problems(More)
Recent peer-to-peer architectures do not fulfill the idea of a service-oriented architecture to allow the flexible composition of services towards concrete applications. This can be justified by the absence of flexible notations for the composition of services that incorporate the dynamic nature exposed by peer-to-peer architectures. In this work, the(More)
As a result of the anonymity in todays Web search, it is not possible to receive a personalized search result. Neither prior search results nor search results from other users are taken into consideration. In order to resolve this anonymity towards the search engine, a system is created which locally stores the search results in the scope of a peer-to-peer(More)
Current peer-to-peer architectures are hardly resistantagainst unanticipated exceptions such as the failure ofsingle peers. This can be justified by the absence of sophisticatedmodels for detecting and handling exceptionin peer-to-peer architectures. On the other hand, existingmodels for such self-adaptable architectures are rathergeneric and less practical(More)
SUMMARY: Modern engineering projects in the application domain of structural design are organized as net-worked co-operations due to permanently enlarged competition pressure and a high degree of complexity while performing concurrent design activities. One of the major challenges of these networked co-operations constitutes the coordination of the(More)
Current peer-to-peer architectures are hardly resistant against unan-ticipated exceptions such as the failure of single peers. This can be justified by the absence of sophisticated models for exception detection and resolution in peer-to-peer architectures. On the other hand, existing generic models for such self-adaptable architectures are rather(More)