The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
We study two problems that involve in detecting critical nodes in networks. In the first problem, we seek a set of vertices with a specified cardinality whose deletion results in maximum number of disconnected components. In an alternate version of the problem, we desire the specified amount of disconnectivity and try to minimize the number of vertices to be deleted in order to achieve this. This...
Modeling and simulation of complex systems are activities where collaboration between researchers with complementary points of view, skills and knowledge is well established and constitutes the usual working way rather than an exception. To manage difficulties of traditional modeling project (how to translate informal knowledge into an implemented software, which intermediate models are needed to...
Computer supported Collaborative Work (CSCW) has been a hot point in researches for some decades. Recent advances in software and hardware technologies have allowed the use of more and more advanced applications and services. It also brought computing capabilities to mobile devices such as smartphones and laptops. This has led to an extensive use of computers to collaborate in some unexpected manners...
This article addresses issues related to traces modelling and visualization in synchronous collaborative learning. The objective is to propose models and tools for representing, transforming, sharing and visualizing traces of users' experiences. The traces here represent the users' activities in their interactions with the learning platform. Our proposition is based on reflexive learning defined as...
The incessant growth of the number of Web services (WSs) makes their discovery more difficult. Standard discovery registries, such as UDDI and ebXML, have their own inherent limitations as they only describe the functionality aspect of each WS and not how it relates to others. Capturing the relationships between WSs as they interact with each other can be useful in many ways. In this paper, we present...
This paper describes a domain independent approach for semantically annotating and representing multimedia presentations. It uses a combination of techniques to automatically discover the content of the media and, though supervised or unsupervised methods, it can generate a RDF description out of it. The domain independence is achieved using Wikipedia as a source of knowledge instead of domain Ontologies...
This paper describes a computer assisted assessment (CAA) case study within the context of an adult school for lifelong learners. The case study shows how to apply eQuestionnaires in competence oriented scenarios, especially for self-assessment activities (where learners have to know their proficiency level in order to further develop a competence) and for embedded-assessment activities (where an...
This paper describes the pedagogical and technological approach to the design of learning activities that can be conducted outside the classroom by using mobile devices. The concept was realized by a role-play applied in the collaborative and mobile learning platform COLLAGE, which was developed in the framework of an EU project. The Collage project was co-financed by the European Commission within...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.