Bücher von Roland Kaschek

Der "e;Rohstoff Information"e; ist heute einer der zentralen strategischen Erfolgsfaktoren im Marktgeschehen. Die Bedeutung eines methodischen Vorgehens bei Planung, Herstellung, Nutzung, Wartung und Auerbetriebnahme von Informationssystemen kann deshalb kaum uberschatzt werden. Informationssysteme bilden daher auch den Schwerpunkt der Angewandten Informatik und der Wirtschaftsinformatik. Es ist somit kein Zufall, wenn die Fachgruppe EMISA nicht nur eine der altesten, sondern auch eine der mitgliederstarksten Fachgruppen der Gesellschaft fur Informatik ist. - Die EMISA-Fachtagungen sind ein Forum fur intensive Diskussion uber die Grundlagen von Informationssystemen, Methoden ihrer Herstellung und Anwendung, der Bewertung ihrer Qualitat sowie ihrer Modifikation. Der vorliegende Tagungsband zeichnet ein eindrucksvolles Bild des "e;state of the art"e;.

This book constitutes the joint refereed proceedings of the three workshops held in conjunction with the 6th International Conference on Web Information Systems Engineering, WISE 2005, in New York, NY, USA, in November 2005.A total of 47 papers were submitted to the three workshops, and 28 revised full papers were carefully selected for presentation. The workshop on Web Information Systems Quality (WISQ 2005) - discussing and disseminating research on the quality of WIS and Web services from a holistic point of view - included 7 papers out of 12 submissions. The workshop on Web-based Learning (WBL 2005) accounted for 10 papers from 14 papers submitted - organized in topical sections on tools, models, and innovative applications. The workshop on Scalable Semantic Web Knowledge Base Systems (SSWS 2005) included 11 presentations selected from 21 submissions. Topics addressed are scalable repository and reasoning services, practical Semantic Web applications, query handling and optimization techniques.

The study reported in this paper is an ongoing effort. We reported a preliminary analysis of the data in the paper. The current experiments varied the subjects to c- duct online group learning activities by the communication media such as email and threaded discussion. Although, we could have easily learned the impact of mobile devices in learning if we divided the subjects to use different hardware such as p- sonal computers, personal digital assistant, or mobile phones, we believe our findings will still be able to provide useful insights on the difficulties that the mobile learners will face in solving problems as a group. Our analysis result will also provide ba- line information on whether the traits of the successful or failed online groups are applicable to the mobile learners. For example, we expect the SMS will be a better medium to overcome the major problem of instant communication or the rapid propagation of the information as the mobile phones have built-in mechanism to remind the users of the incoming new messages and also the mobile phone users are expected to be interrupted for the incoming messages. However, we need further investigation of other problems, which hinder the optimum online group work. For example, 'accuracy of the transferred information' was identified as one of the pr- lems of using emails as the communication medium. Personal Digital Assistant (PDA) or SMS are more apt to deliver shorter messages than the typical emails.