Alexander Schill

Learn More
Previous research in mobile data management has been focused on scenarios where mobile clients replace fixed ones. However, not all potential application fields of mobile computing fit into this scenario. There exist scenarios where mobile clients will not replace but accompany fixed ones. In this paper we introduce a real world application scenario(More)
The power consumption of presently available Internet servers and data centers is not proportional to the work they accomplish. The scientific community is attempting to address this problem in a number of ways, for example, by employing dynamic voltage and frequency scaling, selectively switching off idle or underutilized servers, and employing(More)
Currently, gamification is a new trend under which all activities are subsumed that try to introduce game mechanics into non-gaming applications in order to increase user engagement, motivation, and participation. This approach is especially promising in the enterprise domain since enterprise information systems (EIS) mainly focus on efficiency aspects(More)
Following the vision of an Internet of Things (IoT) real world objects are integrated into the Internet to provide data as sensors and to manipulate the real world as actors. While current IoT approaches focus on the integration of things based on service technologies, scenarios in domains like smart cities, automotive or crisis management require service(More)
According to the Internet of Services vision, composite services are created by composing services to complex business processes. The relationships between services in a composition are defined by Service Level Agreements (SLAs). Managing composite SLAs is a complex task which is currently performed manually. In this paper we present an approach for(More)
In this paper a method of automatic composition plan creation that relies on automatic extraction of dependencies among services is investigated. For automatic dependency extraction our approach makes use of semantic similarities between I/O parameters of services. Extracted I/O dependencies are represented using a directed graph. The approach recognizes(More)