Evaluation of tactical training in team handball by means of artificial neural networks     

Amr Hassan  Norbert Schrapf  Wael Ramadan  Markus Tilp 《Journal of sports sciences》2017,35(7):642-647

While tactical performance in competition has been analysed extensively, the assessment of training processes of tactical behaviour has rather been neglected in the literature. Therefore, the purpose of this study is to provide a methodology to assess the acquisition and implementation of offensive tactical behaviour in team handball. The use of game analysis software combined with an artificial neural network (ANN) software enabled identifying tactical target patterns from high level junior players based on their positions during offensive actions. These patterns were then trained by an amateur junior handball team (n = 14, 17 (0.5) years)). Following 6 weeks of tactical training an exhibition game was performed where the players were advised to use the target patterns as often as possible. Subsequently, the position data of the game was analysed with an ANN. The test revealed that 58% of the played patterns could be related to the trained target patterns. The similarity between executed patterns and target patterns was assessed by calculating the mean distance between key positions of the players in the game and the target pattern which was 0.49 (0.20) m. In summary, the presented method appears to be a valid instrument to assess tactical training.  相似文献   

Corrigendum to “Private-collective innovation,competition, and firms’ counterintuitive appropriation strategies” [RESPOL 42/4 (2013) 895–913]     

Oliver Alexy  Markus Reitzig 《Research Policy》2014

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Editorial introduction     

Meaghan Morris  Markus Reisenleitner  Caroline Turner 《Inter-Asia Cultural Studies》2013,14(4):519-521

The city-state of Hong Kong had a unique postcolonial birth in 1997, when it was handed over to the motherland, China, after the expiration of a hundred year lease on Hong Kong held by the British. In this paper, I suggest that Hong Kong's unique attainment of postcoloniality, and the evolution of her subsequent complicated relationship with Mainland China, leads to a deep sense of anxiety in Hong Kong's identity as a global city. This anxiety, I further argue, is mapped on to the physical landscape of Hong Kong. By analysing the portrayal of Tin Shui Wai, a marginal and isolated area of development in Hong Kong, and the contrasting depiction of public and private spaces in Ann Hui's 2009 film Night and Fog, I attempt to explore the Freudian “uncanny,” the return of the repressed, which constantly threatens to erupt. In the concluding section of the paper, I use Kristevian theories of abjection and the spatialization of identity to argue that the figure of Ling, the Mainland mother in Hui's film, brings to the fore Hong Kong's anxiety about its postcolonial identity and relationship with China. She epitomizes the othered self, the return of the repressed, the foreigner who must necessarily be expelled (through murder) from within the nation-space of Hong Kong.  相似文献   

Theories of Causality: From Antiquity to the Present by John Losee; The Oxford Handbook of Causation by Helen Beebee,Christopher Hitchcock,and Peter Menzies (Eds.)     

Keith A. Markus 《Structural equation modeling》2013,20(4):708-715

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Differences in 3D kinematics between volleyball and beach volleyball spike movements     

Tilp M  Wagner H  Müller E 《Sports biomechanics / International Society of Biomechanics in Sports》2008,7(3):386-397

The purpose of this study was to identify differences between volleyball and beach volleyball spike jump movements performed on an indoor surface and sand surface respectively. Eight elite male volleyball players performed spike jump movements on both surfaces. An eight-camera motion capturing system (250Hz) was used to generate 3D kinematic data. Seven groups of variables representing the kinematics of the centre of mass, the countermovement, the approach phase, and the angular amplitudes and maximal velocities of the lower and upper limbs were examined using Hotelling's T2(2). Significant differences were observed in the movement of the centre of mass (P < 0.05), the countermovement, the kinematics of the approach phase, and the angular amplitudes of the lower limbs. However, no significant differences were observed either in the maximal angular velocities of the lower and upper limbs, or in the amplitudes of the upper limb motion. In conclusion, the participants showed significant adaptation to changed movement conditions. As a result of the compliance of the sand surface, the participants slowed down their movements, especially during the phase of transition from knee flexion to extension and during the extension phase. Furthermore, the participants demonstrated changes in foot position to reach the greatest height possible.  相似文献   

More technology,better learning resources,better learning? Lessons from adopting virtual microscopy in undergraduate medical education     

Laura Helle  Markus Nivala  Pauliina Kronqvist 《Anatomical sciences education》2013,6(2):73-80

The adoption of virtual microscopy at the University of Turku, Finland, created a unique real‐world laboratory for exploring ways of reforming the learning environment. The purpose of this study was to evaluate the students' reactions and the impact of a set of measures designed to boost an experimental group's understanding of abnormal histology through an emphasis on knowledge of normal cells and tissues. The set of measures included (1) digital resources to review normal structures and an entrance examination for enforcement, (2) digital course slides highlighting normal and abnormal tissues, and (3) self‐diagnostic quizzes. The performance of historical controls was used as a baseline, as previous students had never been exposed to the above‐mentioned measures. The students' understanding of normal histology was assessed in the beginning of the module to determine the impact of the first set of measures, whereas that of abnormal histology was assessed at the end of the module to determine the impact of the whole set of measures. The students' reactions to the instructional measures were assessed by course evaluation data. Additionally, four students were interviewed. Results confirmed that the experimental group significantly outperformed the historical controls in understanding normal histology. The students held favorable opinions on the idea of emphasizing normal structures. However, with regards to abnormal histology, the historical controls outperformed the experimental group. In conclusion, allowing students access to high‐quality digitized materials and boosting prerequisite skills are clearly not sufficient to boost final competence. Instead, the solution may lie in making students externally accountable for their learning throughout their training. Anat Sci Educ 6: 73–80. © 2012 American Association of Anatomists.  相似文献   

Histological knowledge as a predictor of medical students' performance in diagnostic pathology     

Markus Nivala  Erno Lehtinen  Laura Helle  Pauliina Kronqvist  Jorma Paranko  Roger Säljö 《Anatomical sciences education》2013,6(6):361-367

Over the years, the role and extent of the basic sciences in medical curricula have been challenged by research on clinical expertise, clinical teachers, and medical students, as well as by the development and diversification of the medical curricula themselves. The aim of this study was to examine how prior knowledge of basic histology and histopathology among students predicts early learning of diagnostic pathology. Participants (N=118, representing 91% of the full student cohort) were medical students at the University of Turku, Finland. Data were collected during two preclinical courses that students attended in their first and second years of medical school. The measurements included tests on biomedical and clinical knowledge and a performance test in diagnostic pathology. Second‐year performance on the diagnostic pathology examinations was predicted by the students' prior knowledge of histology, but not by the students' prior knowledge of histopathology. Although earlier research has demonstrated similar results in studies with shorter longitudinal designs, the present study demonstrates that the effect remains even if there is a considerably long time delay (a year) between the measurements, thus confirming the long‐term value of basic science studies in the preclinical phase. Anat Sci Educ 6: 361–367. © 2013 American Association of Anatomists.  相似文献   

Where angels fear to tread: online peer-assessment in a large first-year class     

Markus Mostert 《Assessment & Evaluation in Higher Education》2013,38(6):674-686

In the context of widening participation, large classes and increased diversity, assessment of student learning is becoming increasingly problematic in that providing formative feedback aimed at developing student writing proves to be particularly laborious. Although the potential value of peer assessment has been well documented in the literature, the associated administrative burden, also in relation to managing anonymity and intellectual ownership, makes this option less attractive, particularly in large classes. A potential solution involves the use of information and communication technologies to automate the logistics associated with peer assessment in a time-efficient way. However, uptake of such systems in the higher education community is limited, and research in this area is only beginning. This case study reports on the use of the Moodle Workshop module for formative peer assessment of students’ individual work in a first-year introductory macro-economics class of over 800 students. Data were collected through an end-of-course evaluation survey of students. The study found that using the feature-rich Workshop module not only addressed many of the practical challenges associated with paper-based peer assessments, but also provided a range of additional options for enhancing validity and reliability of peer assessments that would not be possible with paper-based systems.  相似文献   

    

Dietrich Boles  Cornelia Boles und Markus Schmees 《Informatik - Forschung und Entwicklung》2004,18(3-4):165-173

Zusammenfassung. In diesem Artikel werden verschiedene Erlösformen für den Handel mit Web-Content und -Services vorgestellt, bewertet und miteinander verglichen. Ziel des Artikels ist es, auf der einen Seite Anbietern von digitalen Produkten und Dienstleistungen Möglichkeiten aufzuzeigen, wie sie Einnahmen erzielen können, und auf der anderen Seite WWW-Nutzer darauf einzustellen, dass und in welcher Form sie in Zukunft für den Zugriff auf qualitativ hochwertige Web-Inhalte und -Leistungen bezahlen werden müssen.Eingegangen am 18. Juni 2003, Angenommen am 2. Dezember 2003, CR Subject Classification: K.4.4, K.5.1  相似文献   

Sport Clubs in Various European Countries     

Klaus Heinemann  Markus R. Friederici 《Sportwissenschaft》2003,33(3):330-333

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