Interworking Universal Mobile Telecommunication System (UMTS) and IEEE 802.11 Wireless Local Area Networks (WLANs) introduce new challenges including the design of secured and fast handover protocols. Handover operations within and between networks must not compromise the security of the networks involved. In addition, handovers must be instantaneous to sustain the quality of service (QoS) of t...

Future user controlled development of telecommunication services combined with powerful terminal equipment results in many heterogeneous services running in a peer-to-peer execution environment. In such a system locating a desired service is challenging. In this paper a swarm based optimization algorithm is presented capable of finding paths of resources in a complex network environment. The al...

The complexity of software development has increased over the last few years. Customers today demand higher quality and more stable software with shorter delivery time. Software companies strive to improve their processes in order to meet theses challenges. Agile practices have been widely praised for the focus they put on customer collaboration and shorter feedback loops. Companies that have w...

Work domain analyses can be time consuming, requiring extensive interviews, documentation review, and observations, among other techniques. Given the time and resources required, we examine how to generalize a work domain analysis technique, namely the hybrid Cognitive Task Analysis (hCTA) method across two domains in order to generate a common set of display information requirements. The two d...

When a failure occurs on some edge of a telecommunication network, the amount of traac going through this edge has to be rerouted on some reserve paths. This leads to the restoration problem which consists in determining minimum cost spare capacities to be used for rerouting purposes. We consider here a special case due to the introduction of digital cross-connects in some of the nodes of the n...

The current paper focuses on validating an implementation of a state-of-the art audiovisual (AV) technologies setup for live broadcasting of cultural shows, via broadband Internet. The main objective of the work was to study, configure, and setup dedicated audio-video equipment for the processes of capturing, processing, and transmission of extended resolution and high fidelity AV content in or...

It is greatly advanced in transformation of banking sector in our country and basic preconditions were created for development of card business. The bottleneck in development is still an independent trade network in our country, as well as poor equipment by POS terminals. As modern way of life is increasingly based on the use of payment cards, it is necessary to take certain measures in order t...

Network survivability is a critical issue for modern fiber-optic telecommunication networks. Networks with alternate routes between pairs of nodes permit users to communicate in the face of equipment failure. In this paper, we consider the following low-connectivity network design (LCND) problem. Given a graph G = (N, E) and a connectivity requirement oi ∈ (0, 1, 2) for each node, design a netw...

In this paper, we addres s the param etric prediction of speech quality for planning telecom munication networks. More specifically, we propose an extension to the E-model recommended by the Internati onal Telecommunication Union in order to better capture the effects of signal processing equipment integrated in the terminals. We propose to use two additional parameters for desc ribing the effe...

Matching algorithms automatically discover semantic relations between two autonomously developed conceptual representations of two overlapping domains. Typical examples of such conceptualizations are electronic market catalogues (e.g., UNSPSC and ECL@SS) and web directories (e.g., GOOGLE and YAHOO!). The objective of this paper is the description of a use case in which matching algorithm has be...