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Jeff Slagell 《期刊图书馆员》2013,64(3-4):235-238
Public speaking strikes fear in the heart of many people. This tactics session sought to sharpen the audience's public speaking and presentation skills by providing them with six ingredients to a successful presentation: comfort level, gaining attention, organization, presentation style, discussion, and the wrap-up. Incorporating these principles in one's presentation would help the speaker gain the attention of the audience, communicate effectively, and enact change. 相似文献
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Julie Hayward-Ellis Cheryl M. Glazebrook Jeff Leiter 《European Journal of Sport Science》2017,17(9):1153-1160
The arm swing in hockey skating can have a positive effect on the forces produced by each skate, and the resulting velocity from each push off. The main purpose of this study was to measure the differences in ground reaction forces (GRFs) produced from an anteroposterior versus a mediolateral style hockey skating arm swing. Twenty-four elite-level female hockey players performed each technique while standing on a ground-mounted force platform, and all trials were filmed using two video cameras. Force data was assessed for peak scaled GRFs in the frontal and sagittal planes, and resultant GRF magnitude and direction. Upper limb kinematics were assessed from the video using Dartfish video analysis software, confirming that the subjects successfully performed two distinct arm swing techniques. The mediolateral arm swing used a mean of 18.38° of glenohumeral flexion/extension and 183.68° of glenohumeral abduction/adduction while the anteroposterior technique used 214.17° and 28.97° respectively. The results of this study confirmed that the mediolateral arm swing produced 37% greater frontal plane and 33% less sagittal plane GRFs than the anteroposterior arm swing. The magnitudes of the resultant GRFs were not significantly different between the two techniques; however, the mediolateral technique produced a resultant GRF with a significantly larger angle from the direction of travel (44.44°) as compared to the anteroposterior technique (31.60°). The results of this study suggest that the direction of GRFs produced by the mediolateral arm swing more closely mimic the direction of lower limb propulsion during the skating stride. 相似文献
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The purpose of this study was to assess the potential of multimedia authoring, as a learning tool, using the software ASTOUND. The subjects in this study were 32 students in two Grade 12 classes. The context of the study was a multi‐disciplinary environmental unit about earthquakes. Students were provided with basic background about earthquakes via laboratory experiments and field trips. At a later stage, the students did in‐depth independent projects on selected topics related to earthquakes. Once completed, the students presented their projects using the multimedia software ASTOUND . The research consisted of the following stages: a pre‐development phase; curriculum design phase; implementation and evaluation. The research tools included: questionnaires, interviews, observations, concept mapping, and an analysis of the multimedia presentations. The findings showed that an integration of laboratory exercises, field trips, and an independent study project, could lead to meaningful learning. However, although most of the students enjoyed using the multimedia program, there was no evidence to support the assumption that it contributed to knowledge acquisition. In fact, much of the time invested in multimedia authoring was devoted to producing decorative effects, reducing the time available for meaningful learning. © 2000 John Wiley & Sons, Inc. J Res Sci Teach 37: 1121–1153, 2000 相似文献
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In corporations across America, a race is on to find new ways to maximize human capital. An emphasis on lifelong learning will be vital for the success of our future workforce. As demographic shifts occur, the “older worker” will emerge as a primary target for this human development effort. This article explores the implications of this demographic shift for the human resource development and human performance technology (HRD/HPT) professional and recommends strategies for meeting this business need. First, we discuss the realities of this demographic shift and compare our current workforce demographics to those of the future. Next, we examine the common myths about the “older worker,” as well as what current research reports about this special population. Finally, we examine the impact of this trend on our profession. We discuss strategies for modifying the workplace environment, reassessing workforce motivational strategies, and altering training practices in order to serve this older worker population. In conclusion, we look at the implications for the future in HRD/HPT research. 相似文献
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Jordan A. Tanner Beeran Jethwa Jeff Jackson Maria Bartanuszova Thomas S. King Arunabh Bhattacharya Ramaswamy Sharma 《Anatomical sciences education》2020,13(5):568-580
The pterygopalatine fossa (PPF) is a bilateral space deep within the skull that serves as a major neurovascular junction. However, its small volume and poor accessibility make it a difficult space to comprehend using two-dimensional illustrations and cadaveric dissections. A three-dimensional (3D) printed model of the PPF was developed as a visual and kinesthetic learning tool for completely visualizing the fossa, its boundaries, its communicating channels, and its neurovascular structures. The model was evaluated by analyzing student performance on pre- and post-quizzes and a student satisfaction survey based on the five-point Likert scale. The first cohort comprised of 88 students who had never before studied the PPF. The second cohort consisted of 30 students who were previously taught the PPF. Each cohort was randomly divided into a control group who were provided with a half skull and an intervention group that were provided with the 3D printed model. The intervention group performed significantly better on the post-quiz as compared to the control group in cohort I (P = 0.001); while not significant, it also improved learning in cohort II students (P = 0.124). Satisfaction surveys indicated that the intervention group found the 3D printed model to be significantly more useful (P < 0.05) as compared to the half skull used by the control group. Importantly, the effect sizes for cohorts I and II (0.504 and 0.581, respectively) validated the statistical results. Together, this study highlights the importance of 3D printed models as teaching tools in anatomy education. 相似文献
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