Dimitrios J. Vergados

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Keywords: Web 2.0 Wiki Collective intelligence Expert peer matching Feed-forward neural networks a b s t r a c t One of the main challenges that organizations face nowadays, is the efficient use of individual employee intelligence, through machine-facilitated understanding of the collected corporate knowledge, to develop their collective intelligence. Web(More)
—Handoff is a key element in wireless cellular networks in order to provide Quality of Service (QoS) to the users and to support users' mobility. Handoff failure will result in the forced termination of an ongoing call. From the user's point of view, the service of a handoff request is more important, as the forced termination of an ongoing call is more(More)
— Medical broadband applications have attracted increased attention in the recent years. Also, the tremendous growth of wireless technologies has introduced the potential of continuous healthcare monitoring for mobile patients. The bandwidth requirements and the real-time nature of medical applications introduce the need for Quality of Service (QoS)(More)
For more than a decade it has been observed that due to the continuously augmenting elderly population, medical expenditures for home health care were exponentially raising every year. Healthcare organizations worldwide are being encouraged to find more efficient methods of providing high-quality care with cost savings. Elderly people who live alone may(More)
Power control is an important research topic for ad-hoc Wireless Sensor Networks (WSNs). In today's sophisticated and competitive wireless environment, the control of the energy consumption in a WSN for homecare e-health makes it possible to guarantee basic levels of system performance, such as connectivity, throughput, delay, QoS and survivability in the(More)
In wireless multihop networks, communication between two end-nodes is carried out by hopping over multiple wireless links. However, the fact that each node has to transmit not only its own traffic, but also traffic on behalf of other nodes, leads to unfairness among the communication rates of the nodes. Traditional Carrier Sense Multiple Access/Collision(More)