For at least a decade, in many countries, considerable investment has been placed in Information and Communication Technologies for education, and today concrete results or impacts of these investments are required. In order to find evidence in this area, an important amount of research that has been done has focused on the use of ICT in the classroom, where teachers’ ability to integrate these...

The evolution of technology in support of the Knowledge Society of the years 2000’s will be rooted into three dominant trends: a) increase of richness and completeness of communications, through the development of multimedia technologies, towards the ”Immersive Virtual Telepresence” (IVT), including an increased attention to the aspects of human perception and of person-machine interaction; b) ...

For a graph G, vertex v of G and integer r ≥ 1, we denote the family of independent r-sets of V (G) by I(r)(G) and the subfamily {A ∈ I(r)(G) : v ∈ A} by I v (G); such a subfamily is called a star. Then, G is said to be r-EKR if no intersecting subfamily of I(r)(G) is larger than the largest star in I(r)(G). If every intersecting subfamily of I v (G) of maximum size is a star, then G is said to...

This paper investigates the instance complexities of problems that are hard or weakly hard for exponential time under polynomial time many one reductions It is shown that almost every instance of almost every problem in exponential time has essentially maximal instance complexity It follows that every weakly hard problem has a dense set of such maximally hard instances This extends the theorem ...

Status of this Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. Abstract This memo specifies an RTP paylo...

The paper presents an ontological approach for enabling semantic-aware information retrieval and browsing framework facilitating the user access to its preferred contents. Through the ontologies the system will express key entities and relationships describing learning material in a formal machineprocessable representation. An ontology-based knowledge representation could be used for content an...

E. G. Enns* Department of Mathematics and Statistics University of Calgary E. Ferenstein Institute of Mathematics Technical University of Warsaw (Received January 23,1984: Revised July 23,1984) N independent and identically distributed observations of some random variable with a continuous distribution Fare sequentially presented to two players, White and Black. Each player is required to selec...

Strategic planning must be provided in libraries of all kinds for their designated positioning in todays knowledge society. The following concept points out, how a systematic review and assessment is enabled. On this fundament, positioning in the knowledge society, an ongoing optimization and sustainable enhancement of the library will be possible – both nationally and internationally seen. 1 D...

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