Analyzing and Developing Technique for Mining Very Large Databases to Support Knowledge Exploration

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Integrating legacy mainframe systems: architectural issues and solutions

For more than 30 years, mainframe computers have been the backbone of computing systems throughout the world. Even today it is estimated that some 80% of the worlds' data is held on such machines. However, new business requirements and pressure from evolving technologies, such as the Internet is pushing these existing systems to their limits and they are reaching breaking point. The Banking and Financial Sectors in particular have been relying on mainframes for the longest time to do their business and as a result it is they that feel these pressures the most. In recent years there have been various solutions for enabling a re-engineering of these legacy systems. It quickly became clear that to completely rewrite them was not possible so various integration strategies emerged. Out of these new integration strategies, the CORBA standard by the Object Management Group emerged as the strongest, providing a standards based solution that enabled the mainframe applications become a peer in a distributed computing environment. However, the requirements did not stop there. The mainframe systems were reliable, secure, scalable and fast, so any integration strategy had to ensure that the new distributed systems did not lose any of these benefits. Various patterns or general solutions to the problem of meeting these requirements have arisen and this research looks at applying some of these patterns to mainframe based CORBA applications. The purpose of this research is to examine some of the issues involved with making mainframebased legacy applications inter-operate with newer Object Oriented Technologies

Die Qualität von Organisationen : ein kommunikationsbasierter Messansatz

The goal of this research is to develop an understanding of what causes organizations and information systems to be “good” with regard to communication and coordination. This study (1) gives a theoretical explanation of how the processes of organizational adaptation work and (2) what is required for establishing and measuring the goodness of an organization with regard to communication and coordination. By leveraging concepts from cybernetics and philosophy of language, particularly the theoretical conceptualization of information systems as social systems and language communities, this research arrives at new insights. After discussing related work from systems theory, organization theory, cybernetics, and philosophy of language, a theoretical conceptualization of information systems as language communities is adopted. This provides the foundation for two exploratory field studies. Then a formal theory for explaining the adaptation of organizations via language and communication is presented. This includes measures for the goodness of organizations with regard to communication and coordination. Finally, propositions stemming from the theoretical model are tested using multiple case studies in six information system development projects in the financial services industry.Zielsetzung der hier vorgestellten Forschung ist es, ein Verständnis für die Güte von Organisationen und Informationssystemen im Hinblick auf Kommunikation und Koordination zu entwickeln. Diese Studie gibt (1) eine theoretische Erklärung zur Funktionsweise organisatorischer Anpassungsprozesse und (2) Handlungsanleitungen zur Messung der Güte einer Organisation im Hinblick auf Kommunikation und Koordination. Dies geschieht durch die Nutzung von Konzepten der Kybernetik und der Sprachphilosophie, insbesondere der Formalisierung von Informationssystemen als soziale Systeme und Sprachgemeinschaften. Nach der Diskussion bestehender Ansätze in der Systemtheorie, der Organisationstheorie, der Kybernetik und der Sprachphilosophie wird die Konzeptualisierung von Informationssystemen als Sprachgemeinschaften übernommen. Diese bildet die Grundlage für zwei explorative Feldstudien. Im Anschluss wird eine Theorie zur Erklärung der Anpassung von Organisationen durch Sprache und Kommunikation vorgestellt. Dies beinhaltet Maße für die Güte von Organisationen im Hinblick auf Kommunikation und Koordination. Schließlich werden anhand dieses theoretischen Modells Hypothesen aufgestellt und in einer multiplen Fallstudie in sechs Informationssystementwicklungsprojekten in der Finanzdienstleistungsindustrie überprüft