Effiziente übertragung von Prozessinstanzdaten in verteilten Workflow-Management-Systemen     

Thomas Bauer  Manfred Reichert und Peter Dadam 《Informatik - Forschung und Entwicklung》2001,16(2):76-92

Zusammenfassung.   Zur Unterstützung von unternehmensweiten und -übergreifenden Gesch?ftsprozessen muss ein Workflow-Management-System (WfMS) eine gro?e Anzahl von Workflow-Instanzen steuern k?nnen. Daraus resultiert eine hohe Last für die Workflow-Server und das zugrunde liegende Kommunikationssystem. Ein in der Workflow-Literatur viel diskutierter Ansatz zur Bew?ltigung der Last ist es, die Workflow-Instanzen verteilt durch mehrere Workflow-Server zu kontrollieren. Beim Wechsel der Kontrolle zwischen zwei Workflow-Servern werden dann Migrationen notwendig, bei denen Daten der jeweiligen Workflow-Instanz vom Quell- zum Zielserver übertragen werden müssen, um dort mit der Steuerung fortfahren zu k?nnen. Deshalb belasten Migrationen das Kommunikationssystem zus?tzlich. In diesem Beitrag werden Verfahren entwickelt, mit denen die bei Migrationen entstehende Kommunikationslast reduziert werden kann, so dass die Skalierbarkeit des WfMS signifikant verbessert wird. Falls Gesch?ftsbereiche aus Kostengründen nur über langsame Kommunikationsverbindungen angebunden sind, wird dadurch der Einsatz eines WfMS überhaupt erst erm?glicht. Eingegangen am 22. Juni 2000 / Angenommen am 25. Januar 2001  相似文献   

Ökonomie des Fußballs     

Gregor Hovemann  Manfred Schubert 《Sportwissenschaft》2004,34(4):502-507

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Zur sportlichen Sozialisation von Schülern in der Familie     

Manfred Messing  Dieter Voigt 《Sportwissenschaft》1979,9(4):396-415

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Child Labour and the Contribution of Working Children's Organisations in the Third World     

Manfred Liebel 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》2002,7(1):265-270

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Motivating first-year university students by interdisciplinary study projects     

Franziska D. Koch  Andrea Dirsch-Weigand  Malte Awolin  Rebecca J. Pinkelman  Manfred J. Hampe 《European Journal of Engineering Education》2017,42(1):17-31

ABSTRACT

In order to increase student commitment from the beginning of students’ university careers, the Technische Universität Darmstadt has introduced interdisciplinary study projects involving first-year students from the engineering, natural, social and history, economics and/or human sciences departments. The didactic concept includes sophisticated task design, individual responsibility and a differentiated support system. Using a self-determination theory framework, this study examined the effects of the projects based on survey findings from two projects with more than 1000 students. The results showed that the projects were successful in fulfilling students’ basic psychological needs and in promoting students’ academic engagement. Basic psychological needs were found to be significant predictors of academic engagement. These findings suggest that interdisciplinary study projects can potentially contribute to improving higher education as they fulfil students’ basic psychological needs for competence, relatedness and autonomy and enhance students’ academic engagement.  相似文献   

Engineering Education and the Status of Industry     

Hermann Bayer  Peter Lawrence 《European Journal of Engineering Education》1977,2(3):223-227

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Computer-Based Classification of Preservice Physics Teachers’ Written Reflections     

Wulff  Peter  Buschhüter  David  Westphal  Andrea  Nowak  Anna  Becker  Lisa  Robalino  Hugo  Stede  Manfred  Borowski  Andreas 《Journal of Science Education and Technology》2021,30(1):1-15

Journal of Science Education and Technology - Reflecting in written form on one’s teaching enactments has been considered a facilitator for teachers’ professional growth in...  相似文献   

MPS/CAS Partner Group on Nanostructured Materials     

Lu Ke  Manfred Rühle 《中国科学院院刊(英文版)》2004,18(2)

As one of the first Partner Groups which were initiated to foster scientific exchange and interaction between the Max Pianck Society (MPS) and the Chinese Academy of Sciences (CAS), the Partner Group led by Lu Ke was established on April 1, 1999.During the past five years, the group has received substantial support from the CAS for equipment and from the MPS for personnel and travel expenses. Extensive and productive collaborations between the research staff and students of the Partner Group with several professors (departments) in the Max Planck Institute for Metals Research (MPI-MF) have led to significant advances in synthesis,mechanical properties, melting and superheating of nanostructured metals. The research is well recognized internationally and a substantial number of publications in high quality, peer-reviewed journals (including Science and Physical Review Letters) have resulted.  相似文献   

Clarity and coherence of lesson goals as a scaffold for student learning   总被引：1，自引：0，他引：1  

Tina Seidel  Rolf Rimmele  Manfred Prenzel   《Learning and Instruction》2005,15(6):539-556

The article addresses clarity and coherence of lesson goals as a scaffold for student learning. In 13 physics classes video recordings of the introductory lesson of two topics were rated with respect to clarity and coherence of the lesson structure. HLM analyses showed a positive effect of classes with high goal clarity and coherence on the students' reports on supportive learning conditions, self-determined learning motivation and organising learning activities. Over the course of a school year high goal clarity and coherence resulted in a positive competence development. No effect was found for individual interest development.  相似文献   

Growth history of children with congenital heart defects. I. Effect of operative intervention   总被引：1，自引：0，他引：1  

S J Robinson  L M Bayer 《Child development》1969,40(1):315-346

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