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Financial instruments are becoming more and more complex in order to meet the needs of end-users. This development has led to a corresponding maturation of computer systems. Distributed object products provide solutions that satisfy requirements such as data integration and interoperability. However, Distributed Platforms do not provide container objects or other means of data transfer. This...
Cooperative awareness is established by vehicles exchanging their status frequently. In situations where a high number of vehicles access the communication channel with high frequency, communication and cooperative awareness suffer from increased packet loss. So far, forwarding of beacons focuses on extending the range of V2V communication which is not necessarily needed in most scenarios. In this...
Personal indoor navigation systems guide users through buildings by taking into account several parameters such as the general topology of the building, the walking time to the next destination or the accessibility of certain rooms. Displaying navigation instructions on mobile terminals raises several problems with respect to the needed positioning system on the one hand and integration into the providers...
Pervasive computing is characterized by an automatic adaptation of services to the users situation. To achieve this we compose services from atomic services taking ambient information into account. Due to changing availability of services because of e.g. user mobility an initial composition is not sufficient but an adaptation during runtime is also necessary. Within our architecture we manage one...
Context aware services rely on context information. However, in many cases this information is not available. In this case, the missing context information can often either be inferred from existing knowledge using different inference approaches, or accessed from external context providers. Thereby, dealing with uncertainty is another major concern. In this paper we present a generic approach called...
Large scale mobile commerce applications need to be replicated and distributed to offer an appropriate quality of service to a large audience. In this context, a very important question is when and where replicas should be placed. In this article we present a new distribution strategy for applications in content delivery networks (CDNs). It is intended to be used especially for context-aware services...
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