Common Object Request Broker Architecture (CORBA) has helped many networks with their ability to communicate to one another. CORBA’s ultimate goal is for application integration [3]. CORBA has been around for over ten years and has saved millions of dollars in software that would have been purchased and created to allow client-server requests to be made. CORBA is a middleware that creates a fra...

The rise of organised crime changed Chicago violence structurally by creating networks rivalries and conflicts wherein ricocheted. This study examines the network during Prohibition analysing ‘violence brokers’ – individuals who committed multiple acts that linked separate violent events into a connected network. We analyse two-mode from Capone Database, relational database on early 1900s crime...

In the Internet age, e-commerce provides customers global reach to a wide variety of products and plays a dominant role in business activity and competition. Competition is especially aggressive in the online travel domain where wholesalers, e.g. brokerage companies, contract through their contract managers with thousands of hotel brands and trade hotel products (usually hotel nights) for trave...

In this paper, we present new types of web information services, where users and information brokers collaborate in creating a information service. Such services impose a novel task on information brokers: they become responsible for maintaining the inference strategies used in user modeling. In return, information brokers obtain more accurate information about user needs, since the adaptivity ...

We consider the problem of query plan optimization in information brokers. Information brokers are programs that facilitate access to collections of information sources by hiding source-speci c peculiarities and presenting uniform query interfaces. It is unrealistic to assume that data stored by information sources is complete. Therefore, current implementations of information brokers query all...

Brokers play a critical role in the evolution of innovation systems by accessing and diffusing external knowledge. However, while brokers’ activity allows benefits for entire system, it entails...

We consider the problem of query plan optimization in information brokers. Information brokers are programs that facilitate access to collections of information sources by hiding source-speciic peculiarities and presenting uniform query interfaces. It is unrealistic to assume that data stored by information sources is complete. Therefore, current implementations of information brokers query all...

A Core Broking Model (CBM) has been proposed, which is a core-based model and uses physical brokers to resolve group-trading problems in e-markets. Some solution concepts are adopted in this model, so that three essential factors can be considered, namely incentive compatibility, distributed computing, and less computational complexity. A fees system including the commission for the brokers was...