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Mallory McDuff 《Environmental Education Research》2000,6(4):383-396
The Wildlife Clubs of Kenya (WCK) is the largest grassroots environmental education organization for youth in Africa. Despite three decades of environmental education involving more than one million youth, no documented history exists of the organization or its role in environmental education in Kenya. The objective of this study was to develop a historical perspective of WCK and provide lessons learned for other environmental education programs for youth. This study used document review, participant observation, and semi-structured interviews with 50 respondents. Key success factors revealed by the study include partnerships between motivated individuals and conservation organizations, involvement in high-profile environmental issues, student trips to national parks, impacts on career choices of student, and decentralization of the organization. Critical recommendations for the future include the need to adapt to changing environmental issues and instructional strategies, enhance networking and public relations, incorporate strategic planning into programming, and capitalize on support of former WCK members. This study reflects the importance of documenting the history of environmental education organizations in order to build on past successes and improve program effectiveness for the future. 相似文献
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Matt R. Cross Farhan Tinwala Seth Lenetsky Pierre Samozino Matt Brughelli Jean-Benoit Morin 《Journal of sports sciences》2017,35(22):2198-2203
Understanding the impact of friction in sled sprinting allows the quantification of kinetic outputs and the effective loading experienced by the athlete. This study assessed changes in the coefficient of friction (µk) of a sled sprint-training device with changing mass and speed to provide a means of quantifying effective loading for athletes. A common sled equipped with a load cell was towed across an athletics track using a motorised winch under variable sled mass (33.1–99.6 kg) with constant speeds (0.1 and 0.3 m · s?1), and with constant sled mass (55.6 kg) and varying speeds (0.1–6.0 m · s?1). Mean force data were analysed, with five trials performed for each condition to assess the reliability of measures. Variables were determined as reliable (ICC > 0.99, CV < 4.3%), with normal-force/friction-force and speed/coefficient of friction relationships well fitted with linear (R2 = 0.994–0.995) and quadratic regressions (R2 = 0.999), respectively (P < 0.001). The linearity of composite friction values determined at two speeds, and the range in values from the quadratic fit (µk = 0.35–0.47) suggested µk and effective loading were dependent on instantaneous speed on athletics track surfaces. This research provides a proof-of-concept for the assessment of friction characteristics during sled towing, with a practical example of its application in determining effective loading and sled-sprinting kinetics. The results clarify effects of friction during sled sprinting and improve the accuracy of loading applications in practice and transparency of reporting in research. 相似文献
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Serge Guimond Pierre De Oliveira Rodolphe Kamiesjki Jim Sidanius 《Int J Intercult Relat》2010,34(6):642
In exploring the “status boundary enforcement hypothesis,” Thomsen, Green and Sidanius (2008) theorized and confirmed that Social Dominance Orientation would be more strongly correlated with a general willingness to aggress against immigrants when respondents are primed with an immigrant who is eager to assimilate into the dominant culture than when they are primed with an immigrant who prefers cultural isolation (separation). However, because assimilation differs from separation on both the home culture component and the host culture component, the actual source of this effect remains unclear. By using an assimilation versus integration contrast that differ only on the home culture component, the present study confirmed and extended Thomsen et al.’s findings. We were able to conclude that this counter intuitive effect, at odds with most research in this area, is primarily driven by people with high SDO having more negative reactions to immigrants’ willing to abandon their original cultures rather than to immigrants wanting to maintain contact with the host culture. The theoretical implications of these findings are discussed. 相似文献
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Lockwood KL Gervais PJ Mccreary DR 《Sports biomechanics / International Society of Biomechanics in Sports》2006,5(2):231-241
Technical evaluation in the sport of figure skating is characterized by a subjective marking system. Figure skating judges are responsible for quickly and accurately discerning the quality of technical elements as well as assigning a score to the overall aesthetic appearance of a performance. Traditionally, overall placement marks are assigned for the entire performance; however, the landing of a jump is widely acknowledged as one of the most critical elements of a skater's program. Therefore, our aims were to identify the biomechanical variables that contribute to technical success in executing landings and to establish whether landings rated as biomechanically optimal are also awarded high technical merit scores by judges. Ten nationally ranked competitive figure skaters were asked to execute on-ice, double and triple revolution jumps and to try to land the jumps void of technical faults within a calibrated space. Data were collected at 60 Hz using standard three-dimensional videography. Data reduction was done using the APAS system (Ariel Dynamics Inc). Concurrently, videotapes were viewed and evaluated by 42 accredited judges to determine the perceived technical quality of the landing performances. Judges were asked to evaluate the landing phase of each jump against a landing criteria document. A comparative criteria model was developed to facilitate an assessment of excellence in landing performances through both empirical and subjective analyses. Results of these analyses were twofold: a biomechanical profile of on-ice landings was obtained, and on-ice jump landing strategies rated by empirical evaluations were in agreement with judge's perceptions of the same performances. 相似文献
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Pierre Schaeffer 《Prospects》1980,10(4):425-440
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