This article describes the initial phase of a study where a sample of 72 questionnaires have been distributed to people who identified themselves as Internet users that participate in e-communities for business purposes the data collected where analyzed. The purpose of the research was to investigate the perceptions of online buyers in Greece and study their online behavior when participating i...

In today's world, Public expenditures on health are one of the most important issues for governments. These increased expenditures are putting pressure on public budgets. Therefore, health policy makers have focused on the performance of their health systems and many countries have introduced reforms to improve the performance of their health systems. This study investigates the most important ...

Although business executives remain skeptical about the extent of payoffs from investment in information technology (IT), strategic alignment or the alignment of information systems strategy with business strategy continues to be ranked as one of the most important issues facing corporations. In this paper, we report on the results of a process-level study to investigate the relationship betwee...

Mobile Ad hoc networks (MANET) allow a set of wireless hosts to exchange information without any special infrastructure. The projct entitled “Energy Optimization in Manets using On-Demand Routing Protocol” motivates the need for energy management in ad hoc wireless networks. Limited battery power is one of the most important issues in mobile ad hoc network as the mobile nodes operate in limited...

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Over the last 20 years, the increasing complexity and technical intensiveness of health care in French hospitals have increased the level of uncertainty in the process of care. This paper argues that beyond quality management approaches, the most important issue in health care management is the need to implement new organizational methods in response to the dynamic changes that are transforming...

In 1990, an attitude survey was conducted of 402 animal rights activists attending a national march in Washington, DC (S. Pious, 1991). The present article reports the results of a follow-up survey of 372 activists attending a similar event in 1996. A comparison of the 1990 and 1996 surveys suggests that during this time a significant shift took place in the priorities of the animal rights move...

As we know that the online mining of streaming data is one of the most important issues in data mining. In this paper, we proposed an efficient one.frequent item sets over a transaction-sensitive sliding window), to mine the set of all frequent item sets in data streams with a transaction-sensitive sliding window. An effective bit-sequence representation of items is used in the proposed algorit...