In this paper an architecture for a data brokerage service will be proposed. The brokerage service is a part of the system that is being implemented within the European Grid for Solar Observations (EGSO) to provide a high-performance infrastructure for solar applications. A broker interacts with providers and consumers in order to build a profile of both parties. In particular, the broker inter...

This paper presentsa Latent Semantic Indexing (LSI) method for learningBug tracking concepts in document data. Each attribute in a vector provides the mark of participation of the document in data or term in the parallel concept .The objective to describe the concepts summary based, but to be capable to signify the documents and relations in a combined way for showing document-similarity, docum...

Among the actual cultural-heritage-related problems is the one of effectively managing and globally distributing digitized cultural (and scientific) information. The only feasible way to realize this goal is via the Internet. Hence, a significant issue to be considered is the adequate design of software applications which to realize brokerage tasks within the global space. However, due to the g...

This paper employs a the variable returns to scale DEA model to take account of risky assets and estimate the operating efficiencies for the 21 domestic listed securities firms during the period 2005-2009. Evidence is found that on average the brokerage securities firms’ operating efficiencies are better than integrated securities firms. Evidence is also found that the technical inefficiency fr...

The Internet has grown to become a major component of the global world-wide network infrastructure, linking millions of users. We rst address the need for an electronic market and match-making between consumers and providers on the Internet for the stock photo industry. We discuss business issues and highlight technologies required to support an electronic market for image exchanges on the glob...

We examine security analysts’career concerns by relating their earnings forecasts to job separations. Relatively accurate forecasters are more likely to experience favorable career outcomes like moving up to a high-status brokerage house. Controlling for accuracy, analysts who are optimistic relative to the consensus are more likely to experience favorable job separations. For analysts who cove...

The five concepts and theories that seem to have the most relevance to my current professional position as an English Language instructor and the head of an English Language and Education Department are: (1) diversity in the workplace and its effect on communication, (2) leadership, (3) management and administration, (4) decision making and (5) problem solving with a special focus on organizati...

The First Welfare Theorem fails to hold for standard pure exchange overlapping generations economies because no agent exploits the profit opportunities which can arise from mediating intertemporal trade. This paper modifies the standard economy by introducing an optimizing corporate intermediary which distributes net earnings back to consumer-shareholders. The Pareto inefficient no-trade state,...