Editorial     

Günther Schulze  J. Mark Schuster 《Journal of Cultural Economics》2003,27(2):79-79

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„Sport and Social Order — Challenges for Theory and Practice“ Zweiter Weltkongress für Sportsoziologie der<Emphasis Type="Italic">International Sociology of Sport Association</Emphasis>     

Bernd Schulze 《Sportwissenschaft》2004,34(2):244-245

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Tribute to Dr Jacques Rogge: muscle activity and fatigue during hiking in Olympic dinghy sailing     

Jan G. Bourgois  Jasmien Dumortier  Margot Callewaert  Bert Celie  Carlo Capelli  Gisela Sjøgaard 《European Journal of Sport Science》2017,17(5):611-620

‘A tribute to Dr J. Rogge’ aims to systematically review muscle activity and muscle fatigue during sustained submaximal quasi-isometric knee extension exercise (hiking) related to Olympic dinghy sailing as a tribute to Dr Rogge’s merits in the world of sports. Dr Jacques Rogge is not only the former President of the International Olympic Committee, he was also an orthopaedic surgeon and a keen sailor, competing at three Olympic Games. In 1972, in fulfilment of the requirements for the degree of Master in Sports Medicine, he was the first who studied a sailors’ muscle activity by means of invasive needle electromyography (EMG) during a specific sailing technique (hiking) on a self-constructed sailing ergometer. Hiking is a bilateral and multi-joint submaximal quasi-isometric movement which dinghy sailors use to optimize boat speed and to prevent the boat from capsizing. Large stresses are generated in the anterior muscles that cross the knee and hip joint, mainly employing the quadriceps at an intensity of 30–40% maximal voluntary contraction (MVC), sometimes exceeding 100% MVC. Better sailing level is partially determined by a lower rate of neuromuscular fatigue during hiking and for ≈60% predicted by a higher maximal isometric quadriceps strength. Although useful in exercise testing, prediction of hiking endurance capacity based on the changes in surface EMG in thigh and trunk muscles during a hiking maintenance task is not reliable. This could probably be explained by the varying exercise intensity and joint angles, and the great number of muscles and joints involved in hiking.

Highlights

• Dr Jacques Rogge, former president of the International Olympic Committee and Olympic Finn sailor, was the first to study muscle activity during sailing using invasive needle EMG to obtain his Master degree in Sports Medicine at the Ghent University.

• Hiking is a critical bilateral and multi-joint movement during dinghy racing, accounting for >60% of the total upwind leg time. Hiking generates large stresses in the anterior muscles that cross the knee and hip joint.

• Hiking is considered as a quasi-isometric bilateral knee extension exercise. Muscle activity measurements during sailing, recorded by means of EMG, show a mean contraction intensity of 30-40% maximal voluntary contraction with peaks exceeding 100%.

• Hiking performance is strongly related to the development of neuromuscular fatigue in the quadriceps muscle. Since maximal strength is an important determinant of neuromuscular fatigue during hiking, combined strength and endurance training should be incorporated in the training program of dinghy sailors.

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Resilience in higher education students: a scoping review     

Margo. L. Brewer  Gisela van Kessel  Brooke Sanderson  Fiona Naumann  Murray Lane  Alan Reubenson 《高等教育研究与发展》2019,38(6):1105-1120

ABSTRACT

The health, wellbeing and employability of university students are key considerations within higher education. In response, interest in student resilience is on the rise. Reviews of contemporary resilience literature highlight both conceptual and methodological weaknesses, issues which hamper attempts to design effective resilience interventions. To inform the design of a student resilience program, to be piloted at three Australian universities, a scoping review of resilience specific to the higher education context was undertaken. Searches of three electronic databases (PsychINFO, CINAHL and ProQuest) were conducted. Seventy-two peer-reviewed articles published between 2007 and 2017 were included in the review. While the review reaffirms the conceptual and methodological issues found in previous resilience research, it provides a useful critique of key issues in relation to university student resilience and interventions to enhance students’ resilience. Recommendations for educators and researchers are provided.  相似文献   

Knocking on employment’s door: internships and job attainment     

Di Meglio  Gisela  Barge-Gil  Andrés  Camiña  Ester  Moreno  Lourdes 《Higher Education》2022,83(1):137-161

Higher Education - Undergraduate internships have gained popularity among students, universities, governments and firms since the creation of the European Higher Education Area. However, empirical...  相似文献   

CO₂-Einsparpotenziale des Energietr?gers Erdgas     

Michael Br?uninger  Sebastian Schr?er  Sven Schulze und Henning V?pel 《Zeitschrift für Erziehungswissenschaft》2008,32(1):37-45

Zusammenfassung Angesichts der staatlichen Klimaschutzziele stellt sich die Frage, wie diese mit m?glichst geringer Beeintr?chtigung einer sicheren Versorgung zu günstigen Preisen erreichbar sind. Erdgas, das im Vergleich zu anderen fossilen Energietr?gern deutlich kohlenstoff?rmer ist und darüber hinaus bei der Verbrennung auch keine weiteren Schadstoffe emittiert, kann hier einen Beitrag leisten. Gegenw?rtig hat Erdgas für die Versorgung mit W?rme sowie bei der Erzeugung von Strom eine erhebliche Bedeutung, die zukünftig weiter wachsen wird. Anhand verschiedener Szenarien werden Prognosen zur weiteren Entwicklung von Erdgas und die Auswirkungen auf die CO₂-Emissionen angestellt. Es zeigt sich, dass der Anteil von Erdgas im Bereich der W?rmeversorgung von 46 % auf 56 % steigen wird. Durch ?nderung des Energiemix und Effizienzsteigerungen kann der CO₂-Aussto? für Raumw?rme daher bis 2020 um 8,3 % gesenkt werden. Für die Stromerzeugung werden alternative Szenarien berechnet. Beim derzeitigen Energiemix k?me es zu einer j?hrlichen Steigerung des CO₂-Aussto?es um 0,8 %. Würde Kohle komplett durch Gas ersetzt, k?nnte der CO₂-Aussto? j?hrlich um 1,9 % gesenkt werden.

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Given the governmental climate targets, the question arises how these targets can be achieved without affecting a secure and cheap energy supply. As natural gas causes less carbon emissions than any other fossil fuel it might be able to make a contribution in this regard. Currently, in the generation of heat and power natural gas plays a significant role, which will further increase in the future. Using several scenarios, we predict the development of the importance of natural gas and the consequences for carbon emissions. The calculations show that the share of natural gas for the supply of heat will increase from 46 % to 56 %. Efficiency increases together with changes in the structure of power generation can reduce heating-related carbon emissions by 8.3 % until 2020. For power generation, we calculate alternative scenarios. If the current structure of power generation is held constant, carbon emissions will increase by 0.8 % p.a. If instead natural gas completely replaces coal and lignite, the carbon emissions will be reduced by 1.9 % per year.

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Dieser Beitrag ist eine Kurzfassung der Studie „Wirtschaftsfaktor Erdgasbranche“, HWWI Policy Paper 1–3, Hamburg  相似文献   

Teaching Community Skills to Two Young Children with Autism Using a Digital Self-Managed Activity Schedule     

Yvonne Cheung  Kimberly A. Schulze  Eric Rudrud 《Exceptionality》2016,24(4):241-250

The current study investigated the efficacy of a self-managed activity schedule to teach 2 participants how to effectively order food items from a local community bakery. 2 participants who were on the autism spectrum were taught to follow a task analysis that was displayed on an iPhone. We used a multiple baseline design across participants to evaluate the effectiveness of the teaching procedure. Results showed that the participants were able to order items, and this skill generalized to a novel bakery. The task analysis and iPhone were immediately withdrawn at a 2 to 5 week follow-up, and both participants were still able to effectively perform the steps of the task analysis without the use of prompts.  相似文献   

Notes on recurrent education for women     

Gisela Schade 《Higher Education》1972,1(4):477-481

The debate about recurrent education is still for the most part at an unsophisticated level. This note suggests that whatever the problems of recurrent education in general it is likely to be particularly attractive to women returning to work after their childrearing is finished.The views expressed in this article are those of the author and do not necessarily represent those of the OECD.  相似文献   

Social Development of Young Children in Different Cultural Systems     

Jutta Kienbaum  Gisela Trommsdorff 《International Journal of Early Years Education》1999,7(3):241-248

Ninety‐six 5‐year‐old girls and boys and their mothers (n ‐‐ 87) participated in a cross‐cultural study on prosocial behaviour in Germany and the former USSR. Each child was observed interacting with a playmate who appeared to be sad. The mothers’ educational belief systems were examined on the basis of: (i) a semi‐projective instrument (So‐Sit) depicting everyday conflicts between mother and child; (ii) an interview on a recent conflict. The intensity of prosocial behaviour was higher in German girls than in German boys or Russian girls. More Russian boys than girls showed at least some kind of prosocial behaviour. Russian mothers described their handling of conflicts as more harmonious than German mothers, whereas sex differences occurred within each culture. The results are discussed with regard to the impact of different child‐rearing belief systems in individualistic versus collectivist cultures on the social behaviour of children.  相似文献   

Transition to school: The role of kindergarten children's behavior regulation     

Antje von Suchodoletz  Gisela Trommsdorff  Tobias Heikamp  Frank Wieber  Peter M. Gollwitzer   《Learning and individual differences》2009,19(4):561-566

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