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Despite advances in software engineering methods and tools, understanding what software components do and ensuring that they work well together remains difficult. This is chiefly due to the lack of support for specifying component interfaces and software compositions formally. Due to these shortcomings, composed systems are subject to incompatibility errors, and software developers struggle to retrieve...
The goal of the POBICOS project is a platform that facilitates the development and deployment of pervasive computing applications destined for networked, cooperating objects. POBICOS object communities are heterogeneous in terms of the sensing, actuating, and computing resources contributed by each object. Moreover, it is assumed that an object community is formed without any master plan; for example,...
This paper presents application of ontology-based modelling and reasoning related to the different phases of the lifecycle of mobile services. Ontology-based descriptions complement traditional design-time and runtime models allowing more complex reasoning. We present use cases for ontologies that may be applied at design time, deployment time and/or runtime. Some important characteristics of our...
Przedstawiono wybrane zagadnienia dotyczące udziału Instytutu Telekomunikacji Politechniki Warszawskiej w projekcie SIMS. Skupiono się na wynikach (zarówno koncepcyjnych jak i implementacji) osiągniętych przez zespół z Instytutu Telekomunikacji PW. Zakres prac, za który jest odpowiedzialny zespół uczestniczący w projekcie, dotyczy wykorzystania ontologii w procesie projektowania i użytkowania usług...
The paper targets heterogeneous sensor-actuator networks, in which nodes differ as to resources (sensors and actuators) they are equipped with. Each node contributes its specific sensors and actuators to be used by applications. The key assumption of "opportunistic pervasive computing" is that the actual mix of nodes (and that of available resources) is not known in advance to the programmer...
The paper presents a programming model for a new pervasive computing middleware. The middleware, called ROVERS, targets an environment composed of tiny, resource-constrained, wirelessly communicating nodes embedded into everyday objects. The environment is heterogeneous in that each node is equipped with a unique set of sensors and actuators. The des establish an ad-hoc network and contribute their...
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