A topography of free kicks in soccer     

Daniel Link  Otto Kolbinger  Hendrik Weber  Michael Stöckl 《Journal of sports sciences》2016,34(24):2312-2320

ABSTRACT

This study investigates the spatial relationship of performance variables for soccer free kicks. In order to suggest ways in which players might optimise their performance, we collected data from free kicks (<35 m to goal line) of two German Bundesliga seasons (2013/14, 2014/15) (n = 1624). In the analysis, we applied the ISO-map approach using colour gradients to visualise the mean values of a variable on a 2D-map of the pitch. Additionally, variograms were used to describe the degree of spatial dependence of the free kick variables. Results show that DENSITY, TYPE OF PLAY, PLAYERS IN WALL, DISTANCE TO WALL and RULE VIOLATION were strongly spatially dependent. Centrality and proximity to the goal increased the variables PLAYERS IN WALL, RULE VIOLATIONS and INTERRUPTION TIME, and the ratio of goals scored increased from 5.9% (central far) to 10.9% (central near). In 70.9% of the shots, players preferred a switched laterality, which did not result in a higher success rate. Furthermore, there was no statistical advantage for the defensive team when DISTANCE TO WALL was below 9.15 m or when there was a RULE VIOLATION. Crosses had a success rate (i.e., first controlled ball contact after the cross) of 20.8%. Played with natural laterality, they were 5% more successful than with switched laterality. Crosses from the right side outside the penalty box were 10% more successful than from the left side. Therefore, it might be worthwhile practising the defence of balls coming from this side.  相似文献   

Roma women’s higher education participation: whose responsibility?     

Tamsin Hinton-Smith  Emily Danvers  Tanja Jovanovic 《Gender and education》2018,30(7):811-828

There are striking gaps between Roma and non-Roma higher education (HE) participation rates, with less than 1% of Roma possessing a tertiary-level qualification [United Nations Development Programme, World Bank and European Commission. 2011a. “The Situation of Roma in 11 EU Member States.” Accessed 3 April 2015. http://issuu.com/undp_in_europe_cis/docs/_roma_at_a_glance_web/1#download]. As the Decade of Roma Inclusion (2005–2015) closes, this renders the present a salient moment to reflect on Roma students’ HE experiences. Widening educational access for marginalised groups raises specific questions about where responsibility for doing so lies – with tensions between individualised articulations of raising aspiration and notions of collective responsibility framed in a social justice agenda. Drawing on interviews with five Roma women students, this paper unpacks the contradictions between desiring access to HE for individual self-betterment and concurrent pulls towards educating for the wider benefit of ‘improving’ Roma communities. Using Ahmed’s [2012. On Being Included: Racism and Diversity in Institutional Life. Durham, North Carolina: Duke University Press] work on institutional belonging, we explore the specifically gendered nature of these narratives in how ‘doubly’ marginalised bodies are positioned as outsiders, in receipt of an educational gift.  相似文献   

Universities as partners in U.S. research joint ventures     

Albert N. Link  John T. Scott 《Research Policy》2005,34(3):385-393

This paper investigates the conditions when a research joint venture (RJV) will involve a university as a research partner. We hypothesize that larger RJVs are more likely to invite a university to join the venture as a research partner than smaller RJVs because larger ventures are less likely to expect substantial additional appropriability problems to result because of the addition of a university partner and because the larger ventures have both a lower marginal cost and a higher marginal value from university R&D contributions to the ventures’ innovative output. We test this hypothesis using data from the COoperative REsearch (CORE) database, and those data confirm the hypothesis.  相似文献   

Mathe mit der Matte – Verkörperlichtes Training basisnumerischer Kompetenzen     

Tanja Link  Eva Johanna Schwarz  Stefan Huber  Dr. Ursula Fischer  Prof. Dr. Hans-Christoph Nuerk  Prof. Dr. Ulrike Cress  Prof. Dr. Korbinian Moeller 《Zeitschrift für Erziehungswissenschaft》2014,17(2):257-277

Basic numerical representations are seen as the building block for the successful development of more complex numerical and arithmetic competencies. Extending previous studies focusing on improving basic numerical representations by means of embodied training schemes, the current study focused on an embodied training of children’s place-value understanding. In this vein, 49 secondgraders were trained on solving a number line estimation task by stepping on different fields of a dance mat allowing for separate estimations of tens and units with more effort needed to step on the tens. In a partially randomized cross-over design, two control conditions were used to controll for training effects caused exclusively by the numerical content trained or the use of the dance mat. Interestingly, results revealed specific training effects after both the embodied and the control conditions. However, training effects were significantly more pronounced after the embodied training, thereby providing further evidence for the benefit of an embodied training of the place-value structure of the Arabic number system.  相似文献   

Families' digital media use: Intentions,rules and activities     

Lars Eichen  Sigrid Hackl-Wimmer  Marina Tanja Waltraud Eglmaier  Helmut Karl Lackner  Manuela Paechter  Karoline Rettenbacher  Christian Rominger  Catherine Walter-Laager 《British journal of educational technology : journal of the Council for Educational Technology》2021,52(6):2162-2177

  相似文献   

Enhancing Scientific Communication Skills: a Real-World Simulation in a Tertiary-Level Life Science Class Using E-Learning Technology in Biomedical Literature Perception,Reflective Review Writing on a Clinical Issue,and Self and Peer Assessments     

Eppler  Elisabeth  Meyer  Jan  Serowy  Steffen  Link  Karl  Pauk  Barbara  Filgueira  Luis 《Research in Science Education》2021,51(2):277-299

Research in Science Education - This educational study aimed to explore the feasibility and acceptance of a literacy exercise adopted from the realworld of scientific publishing in a cell and...  相似文献   

Tax incentives for R&D: a critical evaluation     

Barry Bozeman  Albert N. Link 《Research Policy》1984,13(1):21-31

A number of policy proposals have recently been presented that seek to address the problem of declining productivity growth. Many of these are aimed at encouraging private R&D spending through tax incentives. This paper first reviews some of these proposals, then evaluates tax incentives per se as a policy tool for encouraging R&D growth, and finally offers suggestions for redesigning R&D related tax incentive policies.  相似文献   

Scaling Performance Assessments: A Comparison of One-Parameter and Two-Parameter Partial Credit Models     

Anne R. Fitzpatrick  Valerie B. Link  Wendy M. Yen  George R. Burket  Kyoko Ito  Robert C. Sykes 《Journal of Educational Measurement》1996,33(3):291-314

In one study, parameters were estimated for constructed-response (CR) items in 8 tests from 4 operational testing programs using the l-parameter and 2- parameter partial credit (IPPC and 2PPC) models. Where multiple-choice (MC) items were present, these models were combined with the 1-parameter and 3-parameter logistic (IPL and 3PL) models, respectively. We found that item fit was better when the 2PPC model was used alone or with the 3PL model. Also, the slopes of the CR and MC items were found to differ substantially. In a second study, item parameter estimates produced using the IPL-IPPC and 3PL-2PPC model combinations were evaluated for fit to simulated data generated using true parameters known to fit one model combination or ttle other. The results suggested that the more flexible 3PL-2PPC model combination would produce better item fit than the IPL-1PPC combination.  相似文献   

Becoming an educational leader – exploring leadership in medical education     

Klara Bolander Laksov  Tanja Tomson 《International Journal of Leadership in Education》2017,20(4):506-516

Research on educational leadership emphasizes the importance of having institutional leaders heavily involved with advanced instructional programming. Best practices for developing educational leadership in higher education health care and medical faculties have to be better understood. Within the framework of a seminar series, researchers and practitioners were involved in a dialogical process of inquiry, coupled with an explicit activity-oriented approach emphasizing empowerment among educational leaders. In a reflective paper, 10 participants of the seminar series elaborated on what it meant to develop and to ‘take’ leadership in your professional role and which factors that were identified as adding value to the development of professional leadership expertise. Qualitative content analysis was conducted resulting in thirteen categories reported in relation to Wenger’s theory of communities of practice. The findings show that educational leadership involves processes on the levels of students, teachers as community and at the organizational level. The individuals created a place for backstage conversations at which they got opportunity to develop their thinking and inspiration to break new ideas into their own educational communities. In addition, a systemic approach is essential for the effective implementation of educational leadership to reach all levels via interaction and communication across an organization.  相似文献   

College-bound high-school graduates of 1972 and 1980 compared by college major     

Lyle V. Jones  Tanja Bekhuis  Ernest C. Davenport Jr. 《Research in higher education》1985,23(3):319-331

College enrollments are shown to have increased since the 1970s for majors in computer science, engineering, and business, and to have decreased for the biological and social sciences, the humanities, and education. In both the 1970s and the 1980s, high average levels of high-school achievement are observed for declared college majors in science and engineering fields. Education and business majors display records of relatively low average levels of achievement in high school, as do college dropouts, whatever their college major.  相似文献