The study investigates the digital divide concerning computer literacy in Hungary. It examines the differences of computer literacy of people with different social-demographic characteristics (gender, settlement type, education, labor market presence and income). It also investigates the...

An agent-based e-commerce environment is regarded as one of the most suitable open environments for electronic marketplaces. Because of agent?s autonomous, reactive and proactive features, agents can, on the one hand, act on behalf of their owner, and use individual strategies to increase the...

Gaussian mixture models have been used extensively in model-based clustering. It is well known that the likelihood function for this model is unbounded and the global MLE does not exist. Existing methods confine the parameter estimates in the interior of the parameter space and the MLE is shown...

In this paper, we develop a decision-theoretic frameworkfor evaluating data mining systems, which employ classification methods, in terms of their utility in decision-making. The decision-theoretic model provides an economic perspective on the value of â extracted knowledge,â in terms of its...

Computing is moving away from the desktop, permeating into many everyday objects and the environments in which we live. Many researchers in ubiquitous computing are excited about the potential to profoundly change the way we live by revolutionizing how we interact with information. Despite the...

This paper considers the implementation of IT infrastructures from the perspective of their ongoing performance. Based on a case study of the implementation of Lotus Notes in a manufacturing company in the UK, it depicts this performance as the interaction between issues and concerns emerging...

This comprehensive textbook considers all of the key business, management and technical issues of e-Business, examining and explaining how technologies can help organizations in both the public and private sectors conduct business in new ways.After addressing the changing nature of the e-Economy...

While much attention has recently been focused on the problems facing Internet start-ups, the challenge of e-business affects a much broader constituency of organisations. For established companies, the key challenge is one of change. Such companies must rethink fundamental aspects of company...

In context-aware systems, there is a high demand on providing privacy solutions to users when they are interacting and exchanging personal information. Privacy in this context encompasses reasoning about trust and risk involved in interactions between users. Trust, therefore, controls the amount...

The traditional view that a high sales tax rate reduces trade by driving a wedge between the purchase and sale price may not apply to internet commerce for two reasons. The first reason is that the sales tax paid by buyers purchasing via the internet is determined by the tax rate in the region...