Prof. Dr. Helmut Jarosch

Department of Business and Economics
Professor for Business Information and Communication Systems
Professor

  • userpage.fu-berlin.de/~jarosch/

T: +49 (0)30 30877-1126
E: jarosch@hwr-berlin.de


Visitor's address
Schöneberg Campus
Building B
Room 308
Badensche Straße 50-51
10825 Berlin

Postal address
Hochschule für Wirtschaft und Recht Berlin
Schöneberg Campus
Badensche Straße 52
10825 Berlin
Germany

 

Academic and Professional Career

  • 1971: Degree in Physics at the TU Dresden
  • 1971-1990: Research assistant and departmental head at the Berlin Academy of Sciences
  • 1975-1989: Lecturer at the Ilmenau University of Technology
  • 1979: Doctorate in Engineering (Dr. –Ing) at the Ilmenau University of Technology
  • 1989: Post-doctoral lecturing qualification in technical sciences at the Ilmenau University of Technology
  • 1990-1991: Scientific adviser at Thyssen Edelstahlwerke AG (a manufacturer of high-grade steel) in Krefeld
  • 1991-1992: Head of the department for software technology at the Helmholtz Centre Berlin (formerly the Hahn-Meitner Institute Berlin)
  • since 1992: Professor of Business Information and Communication Systems at the FHW Berlin / BSEL

Expert for

  • Information retrieval systems
  • Artificial intelligence
  • Data modelling

Key Aspects in Teaching

  • Business information systems
  • Applications for artificial intelligence in the database environment
  • Modelling of application systems

Research Projects and Fields

  • Application of methods of machine learning to facilitate communication with an information retrieval system
  • Object-oriented modelling of information systems
  • Information retrieval in scattered, heterogeneous information sources with the help of co-operative, intelligent agents

Research Projects Abstracts

Expert systems and deductive databases – concept and applications In this research report two major aspects of knowledge processing – expert systems and deductive databases – are looked at more closely. Following a discussion of key concepts in knowledge processing, the architecture of expert systems is dealt with. Rule-based systems are presented as the most frequent form for realising expert systems. This is rounded off with a discussion of the areas in which expert systems can be used. Some practical applications of expert systems – in particular for creditworthiness checks carried out by banks – are also presented. Deductive databases are introduced as a further development of database systems which are required to overcome the boundaries of relational query languages. As an example, the declarative database language F-logic is presented as a Horn logic language which combines two concepts: the deductive and the object-oriented approach. A short overview of the ways in which deductive databases can be used on the World Wide Web concludes the research report. Here deductive databases on the web are regarded as an information category which is positioned between SQL databases and HTML documents. Object-oriented database management systems and applications development with Unified Modelling Language This research report deals with major aspects of object-oriented systems development. After the basic principles of object-orientation have been presented, the second point of emphasis is a description of the key characteristics and potential of object-oriented database management systems. Finally there is a short explanation of Unified Modelling Language (UML), which is seen today as a quasi-standard for an object-oriented description of information systems. Objects can be not only simple data types like numbers or strings of characters, but also, for example, a complete electronic circuit diagram. The fact that it is possible to embed other objects in an object generates an extraordinary flexibility when it comes to database design. Since not only the data itself is captured but also the methods that can be realised on this data, these methods don’t any longer have to be implemented in the application. The methods can be used jointly by all applications that work with the object. This approach shifts the task of implementing the behaviour of objects into the area of responsibility of the database designer and, in so doing, makes it easier for the programmer to create the application. In object-oriented database systems new data types can be introduced by the formation of a sub-class and by inheritance. Likewise, complex operations can be formed by inheritance and the overloading of basic operations. In this way, the idea of inheritance reduces the development and maintenance costs of a database application. Object-oriented methods have developed by now to become a mature software technology. Since 1977 the object-oriented modelling language, Unified Modelling Language (UML), has been a quasi-standard for the analytical phase of object-oriented systems development.

Selected, current Publications

  • Datenbankentwurf. Eine beispielorientierte Einführung für Studenten und Praktiker. Wiesbaden: Vieweg, 2002. 379 S., ISBN 3-528-05800-5.
  • mit V. Schnauder und I. Thieme: Praxis der Softwareentwicklung. Techniken, Instrumente, Methoden.Renningen: Expert-Verlag, 2001. 226 S., ISBN 3-8169-1600-7.
  • mit H.-D. Müller: Intelligente Benutzerführung bei der Informationssuche: Mensch-Maschine-Kommunikation mit Information-Retrieval-Systemen.Berlin: Wissenschaft und Technik Verlag, 1997. 123 S., ISBN 3-89685-502-6.

Selected dissertation topics

  • An evaluation of the tools of supply chain management on the basis of a simulation of logistics chains
  • Design of a database application for analysing competition in research and development at Volkswagen AG
  • Analysis of object-oriented modelling based on use cases, with reference to practical examples
  • Optimising the data model of a data warehouse for the purpose of analysing the business data of prepaid card services
  • Development of a document management system for the administration of building references and specialist literature in the field of civil and underground engineering