Erratum to: Improving vocational students’ consideration of source information when deciding about science controversies     

Marc Stadtler  Lisa Scharrer  Monica Macedo-Rouet  Jean-François Rouet  Rainer Bromme 《Reading and writing》2016,29(8):1699-1699

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Motivational profiles of sporting event volunteers     

Torsten Schlesinger  Rainer Gubler 《Sport in Society》2016,19(10):1419-1439

This article presents an approach for segmenting sporting event volunteers according to differences in their motives. Empirical data were obtained from a sample of 1169 volunteers who registered for the 2014 European Athletics Championships in Zürich. They completed the ‘Volunteer Motivation Scale for International Sporting Events’ (VMS-ISE) questionaire. The validity of the VMS-ISE was replicated by confirmatory factor analysis and the data were cluster analysed to identify distinct motivation-based volunteer profiles. These segmented volunteers on the basis of mutually exclusive motivational characteristics. The external validity of the four motivation-based types (‘community supporters’, ‘material incentive seekers’, ‘social networkers’ and ‘career and personal growth orienteers’) was confirmed with socio-economic, sport-related and volunteer activity-related variables. It is concluded that motivation-based segmentation represents a useful way of gaining a clearer understanding of the patterns underlying the heterogeneity of sporting events volunteers.  相似文献   

Rekonstruktion von Software-Architekturen
Ein Literatur- und Methoden-überblick zum Stand der Wissenschaft     

Rainer Koschke 《Informatik - Forschung und Entwicklung》2005,6(6):127-140

Software-Architekturen werden aus verschiedenen Sichten beschrieben, die abh?ngig von den Anliegen sind, die mit der Beschreibung verfolgt werden. In vielen F?llen ist die Software-Architektur eines Systems nicht ausreichend beschrieben. Sichten müssen dann rekonstruiert werden, um für Planung von ?nderungen zur Verfügung zu stehen. Dieser Artikel fasst die in der wissenschaftlichen Literatur vorgeschlagenen Techniken zur Rekonstruktion von Software-Architektursichten zusammen und stellt sie den Sichten des Architekturentwurfs gegenüber. Anhand der Gegenüberstellung identifiziert er Forschungsbedarf.  相似文献   

Instruktionspsychologie motorischen Lernens     

Frank Hänsel  Rainer Wollny 《Sportwissenschaft》2004,34(1):99-102

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Eine Methode zur Konstruktion robuster Klassenhierarchien     

Arne Frick  Rainer Neumann und Wolf Zimmermann 《Informatik - Forschung und Entwicklung》1997,12(4):186-195

Zusammenfassung. In diesem Beitrag wird eine Methode zur Konstruktion robuster Klassenhierarchien vorgestellt. Hierzu wird aus den überlegungen bezüglich der polymorphen Verwendung von Klassen [2] eine Vorgehensweise zur Konstruktion von Klassenhierarchien abgeleitet. Die Begriffe Konformit?t und Spezialisierung werden verfeinert, indem nicht mehr s?mtliche Methoden einer Klasse, sondern Teilmengen davon betrachtet werden. Dies führt zum Begriff der partiellen Konformit?t. In Erweiterung von [2] sind partiell konforme Klassen dann polymorph verwendbar, wenn der Anwendungskontext, der sich aus der Benutzung der Klasse ergibt, sich ausschlie?lich auf konforme Methoden erstreckt. Diese Eigenschaft ist statisch zur übersetzungszeit überprüfbar. Damit k?nnen Fehlbenutzungen bereits zur übersetzungszeit ausgeschlossen werden. Eingegangen am 24. Dezember 1996 / Angenommen am 15. Oktober 1997  相似文献   

Towards a Research Policy for the New Europe: Changes and Challenges for Public and Private Funders     

Krull  Wilhelm 《Minerva》2004,42(1):29-39

Since the late 1980s, Europe has witnesseddramatic changes in the political landscape andin daily life. Many of these changes are drivenby new developments in science and technology.At the same time, research choices are beingmade in the anticipation of economic benefits.In this context, the European Commission andprivate foundations in Europe are rethinkingtheir approaches and priorities. This paperconsiders some of the changes taking place inresearch policy, and reflects upon somereconfigurations currently underway.  相似文献   

Verleihung des Wissenschaftspreises desDeutschen Sportbundes 2003/2004 an Prof. Dr. Oliver Höner am 11. November 2004 in Heidelberg     

Rainer Wollny 《Sportwissenschaft》2005,35(1):100-104

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Disposable parallel poly(dimethylsiloxane) microbioreactor with integrated readout grid for germination screening of Aspergillus ochraceus     

Demming S  Sommer B  Llobera A  Rasch D  Krull R  Büttgenbach S 《Biomicrofluidics》2011,5(1):14104

In this work a disposable, parallel microbioreactor (MBR) suitable for screening in batch or continuous mode is presented. The reactor consists of five parallel microchambers made of poly(dimethylsiloxane) bonded to a glass substrate. A grid structure is engraved on each chamber, allowing subsequent morphology imaging. Measurements are recorded over the entire cultivation period with constant parameters, namely, position and focus in the z-axis. The microdevice may be used for either parallel, uni- or multiparametric screening, and overcomes the drawback of gridless microwell plates which require expensive equipment such as an inverted microscope with an automatic stage. To validate the scalability from laboratory scale to microscale, and thus the cultivation protocol in the MBR, the germination of fungal spores (A. ochraceus) is evaluated for two different key magnitudes (pH and temperature) and compared to the results obtained from conventional laboratory scale systems (flasks and agar plates). Information on germination capacity with regard to interspecies' variability allows for optimization of industrial processes as optimal pH and temperature matched to the mesoscopic cultivation systems. The germination conditions therefore remain unaffected inside the MBR, while providing the following advantages: (i) dramatic reduction of medium consumption, (ii) submerged cultivation with constant oxygen supply, (iii) assured low cost and disposability, and (iv) possibility of a continuous cultivation mode.  相似文献   

Vertical microbubble column–A photonic lab-on-chip for cultivation and online analysis of yeast cell cultures     

Stefanie Demming  Gena Peterat  Andreu Llobera  Hannah Schmolke  Alexander Bruns  Michael Kohlstedt  Ala‘aldeen Al-Halhouli  Claus-Peter Klages  Rainer Krull  Stephanus Büttgenbach 《Biomicrofluidics》2012,6(3)

This paper presents a vertically positioned microfluidic system made of poly(dimethylsiloxane) (PDMS) and glass, which can be applied as a microbubble column (μBC) for biotechnological screening in suspension. In this μBC, microbubbles are produced in a cultivation chamber through an integrated nozzle structure. Thus, homogeneous suspension of biomass is achieved in the cultivation chamber without requiring additional mixing elements. Moreover, blockage due to produced carbon dioxide by the microorganisms—a problem predominant in common, horizontally positioned microbioreactors (MBRs)—is avoided, as the gas bubbles are released by buoyancy at the upper part of the microsystem. The patterned PDMS layer is based on an optimized two-lithographic process. Since the naturally hydrophobic PDMS causes problems for the sufficient production of microbubbles, a method based on polyelectrolyte multilayers is applied in order to allow continuous hydrophilization of the already bonded PDMS-glass-system. The μBC comprises various microelements, including stabilization of temperature, control of continuous bubble formation, and two optical configurations for measurement of optical density with two different sensitivities. In addition, the simple and robust application and handling of the μBC is achieved via a custom-made modular plug-in adapter. To validate the scalability from laboratory scale to microscale, and thus to demonstrate the successful application of the μBC as a screening instrument, a batch cultivation of Saccharomyces cerevisiae is performed in the μBC and compared to shake flask cultivation. Monitoring of the biomass growth in the μBC with the integrated online analytics resulted in a specific growth rate of 0.32 h⁻¹, which is almost identical to the one achieved in the shake flask cultivation (0.31 h⁻¹). Therefore, the validity of the μBC as an alternative screening tool compared to other conventional laboratory scale systems in bioprocess development is proven. In addition, vertically positioned microbioreactors show high potential in comparison to conventional screening tools, since they allow for high density of integrated online analytics and therefore minimize time and cost for screening and guarantee improved control and analysis of cultivation parameters.  相似文献   

Impact on student teachers' conception of learning and teaching from studying a course in educational psychology     

Edgar Krull  Ingrid Koni  Kaja Oras 《Asia-Pacific Journal of Teacher Education》2013,41(2):218-231

This study investigates changes in the conceptions of learning and teaching among undergraduate student teachers. A qualitative content analysis of essays using metaphors to describe learning and teaching written by 256 students at the beginning and end of an educational psychology course was used as the main research procedure. It was found that there was an increase in the share of students that see learning and teaching from a cognitive-constructivist perspective and a decrease in the share that see learning and teaching from a behaviourist perspective by the end of the course. In addition, the study revealed that the coherence in the nature of the metaphors describing learning and teaching increased by the end of the course. However, there was practically no increase in the number of essays describing learning from a socio-constructivist perspective, a fact that points to a need to pay more attention to the manifestations of learning in different communities of students, that is, to a relevant knowledge that teachers need in their everyday work.  相似文献