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Education invariably aims at developing competencies, technical as well as non-technical ones. As a consequence, there is also a need for methods that can be used to assess the quality of education faithfully. One possible approach is an assessment of whether intended learning outcomes are achieved, i.e. an investigation if the target audience possesses the desired competencies. Assessment of competencies,...
The properties of multimodality, individuality, adaptability, availability, cooperativeness and trustworthiness are at the focus of the investigation of Companion Systems. In this article, we describe the involved key components of such a system and the way they interact with each other. Along with the article comes a video, in which we demonstrate a fully functional prototypical implementation and...
A number of ubiquitous systems are considering how to deal with situation-awareness to act in a personalized manner according to user's needs. Indeed, most of the research efforts in situation-awareness are generally focused on the implementation of common characteristics, differing basically on the relevant context observed and how this contextual information is managed. Consequently, little attention...
Digital storytelling (DST) is an evolution of the age-old traditional storytelling, by utilizing the power of storytelling via the latest technology. In order for a digital storyteller to construct a digital story, there are sets of guided elements to be followed. However, these experts-proposed elements vary; while some are repetitive others do not cater for interactivity. Therefore, the main aim...
In the context of Model Driven Engineering (MDE) the definition of a Domain Specific Modeling Language (DSML) consists of a set of coordinated artifacts specifying the abstract and concrete syntax of the language, and possibly further aspects related to semantics. Concerning the specification of concrete syntaxes a number of tools are available. They typically permit to associate syntactic elements...
The idea to build systems based on services, by reusing and combining software made available independently via different technologies and channels and dynamically organizing them into coherent processes, has a very well recognized potential. Achieving this potential stands crucially on the ability to recognize and exploit the context in which such applications operate, in terms of the available services,...
Every scientific discipline aims at accumulating and developing scientific knowledge in order to develop its theoretical foundations. Scientific knowledge is typically shared and communicated by means of articles published in journals, conference proceedings or books printed on paper or in electronic form. As researchers are typically not interested in articles but their specific content such as concepts,...
Perception–action (P–A) learning is an approach to cognitive system building that seeks to reduce the complexity associated with conventional environment-representation/action-planning approaches. Instead, actions are directly mapped onto the perceptual transitions that they bring about, eliminating the need for intermediate representation and significantly reducing training requirements. We here...
Environments play an important role in multi-agent systems. They present the context agents operate in. When testing multi-agent systems by simulation, the environment and partly agents have to be modeled. We explore the potential of Multi-Level-DEVS to serve as a modeling formalism for agents, their environment, and the interaction between them. Multi-Level-DEVS combines a modular, hierarchical modeling...
In certain systems, software must be adapted at runtime to the requirements and changes occurring in the context. A strategy to achieve this goal is to model such systems as software architectures making use of the Component-based Software Engineering (CBSE). Thus, the system can be adapted through the reconfiguration of the software architectures. In this paper we present a schema for the adaptation...
Understanding the user's requirements and intentions is important when developing pervasive applications. It helps making adaptation decisions and satisfying the user's needs. In order to do this, the user's intentions, the current situation and the options for application adaptation have to be taken into account. In this paper we extend prior work on situation modeling and specifying applications...
Services computing is becoming one of the most widely adopted software paradigms in today's network computing environment. Due to the rapid development of web services technology, there are growing number of web services applications distributed over the Internet. While the identification of web services that best meet the users' needs and preferences remains an unsolved problem, requirements, social...
We propose a comprehensive framework for adaptivity of service-based applications, which exploits the concept of process fragments as a way to model reusable process knowledge and to allow for the dynamic, incremental, context- aware composition of such fragments into adaptable service-based applications. The framework provides a set of adaptation mechanisms that, combined through adaptation strategies,...
This work proposes a new integrity access control model: “MultiLevel-OrBAC”. On the one hand, we extend OrBAC (Organization-Based Access Control Model) to take into account integrity rules and levels based on the Totel integrity model. On the other hand, we present a representative scenario of secure applications in which integrity and security rules are interacting inside MultiLevel-OrBAC security...
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