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Armin Elmendorf 《Journal of The Franklin Institute》1918,185(1):119-130
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Diese Arbeit stellt ein Modell und ein System zur Steuerung von Exoskeletten mit Hilfe von elektrischen
Signalen vor, die an den Muskeln des Benutzers gemessen werden. Anhand dieser Signale wird der eigene Drehmomentbeitrag
des Benutzer zur gewünschten Bewegung abgesch?tzt, und ein einstellbarer Faktor bestimmt das vom
Exoskelett hinzugefügte Drehmoment in Bezug auf den Beitrag des Benutzers. Die Signale werden durch
ein komplexes biomechanisches Modell ausgewertet. 相似文献
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Alexander Häfner Armin Stock Verena Oberst 《European Journal of Psychology of Education - EJPE》2015,30(1):81-94
The aim of this study was to examine the effects of a time management training program on perceived control of time and perceived stress in the context of higher education. Twenty-three undergraduate students attended a time management training intervention and reported demands, perceived stress and perceived control of time directly before 2 and 4 weeks after training. We used a “non-equivalent dependent variable design” (Cook and Campbell, Quasi-experimentation: design and analysis for field settings, p. 118, 1979) with perceived stress and perceived control of time as dependent variables, which should be influenced by the training, and demands as control variable, which should not be changed. As expected, perceived stress decreased and perceived control of time increased after training, whereas demands did not change. Therefore, time management training might be beneficial for undergraduate students’ well-being. Nevertheless, more intervention studies in this field are necessary, especially with lager samples, to contribute to more robust results and conclusions. 相似文献
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Manjima Dhar Jessica Wong Armin Karimi James Che Corinne Renier Melissa Matsumoto Melanie Triboulet Edward B. Garon Jonathan W. Goldman Matthew B. Rettig Stefanie S. Jeffrey Rajan P. Kulkarni Elodie Sollier Dino Di Carlo 《Biomicrofluidics》2015,9(6)
Circulating tumor cells (CTCs) are important biomarkers for monitoring tumor dynamics and efficacy of cancer therapy. Several technologies have been demonstrated to isolate CTCs with high efficiency but achieve a low purity from a large background of blood cells. We have previously shown the ability to enrich CTCs with high purity from large volumes of blood through selective capture in microvortices using the Vortex Chip. The device consists of a narrow channel followed by a series of expansion regions called reservoirs. Fast flow in the narrow entry channel gives rise to inertial forces, which direct larger cells into trapping vortices in the reservoirs where they remain circulating in orbits. By studying the entry and stability of particles following entry into reservoirs, we discover that channel cross sectional area plays an important role in controlling the size of trapped particles, not just the orbital trajectories. Using these design modifications, we demonstrate a new device that is able to capture a wider size range of CTCs from clinical samples, uncovering further heterogeneity. This simple biophysical method opens doors for a range of downstream interventions, including genetic analysis, cell culture, and ultimately personalized cancer therapy. 相似文献
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Peppler Kylie Thompson Naomi Danish Joshua Moczek Armin Corrigan Seth 《Instructional Science》2020,48(3):291-312
Prior literature has begun to demonstrate that even young children can learn about complex systems using participatory simulations. This study disentangles the impacts of third-person perspectives (offered by traditional simulations) and first-person perspectives (offered by participatory simulations) on children’s development of such systems thinking in the context of the emergent complexity of honeybee nectar foraging. Specifically, we worked with three first-grade classrooms assigned to one of three conditions—instruction through use of a first-person perspective only, third-person perspective only, and integrated instruction—to engage ideas of complex systems thinking. In each condition, systems concepts were targeted through instruction and assessment. The integrated and third-person classrooms demonstrated significant gains while the first-person classroom showed gains that were not statistically significant, suggesting that third-person perspectives play a critical role in how children learn systems thinking. This work also puts forth a novel assessment design for young children using multiple-choice questions.
相似文献18.
Óscar Jerez Yàñez Fernanda Corvalán Canessa Lesslie González Rojas Armin Ramos Torres 《International Journal for Academic Development》2019,24(2):204-208
ABSTRACTWe propose a ‘1-to-1’ accompaniment and teaching development model emerging from the analysis and reflection of professional experience at a Teaching and Learning Center in a Chilean university. We highlight the relevance of the bond between professor and adviser and the establishment of a horizontal relationship, where both work collaboratively on the achievement of common objectives. This means breaking away from the classic view of the counseling process, where aspects of discipline and context are not necessarily considered. Despite size scalability issues, this model is flexible in its applicability and is adaptable to different university contexts. The implementation of this model is still under development, particularly in its evaluation phase. 相似文献
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News media are often believed to focus on negative events as a means to increase their audience and profits. This study evaluates whether this conjecture applies in the case of the 3 German news magazines Der Spiegel, Stern, and Focus in the period from 1997 to 2009. Based on detailed content analyses of issues with political and economic cover stories, the results indicate significant, positive correlations between explicitly negative cover pages and the magazines' sales, after controlling for a comprehensive set of other success drivers and influences. 相似文献
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The purpose of this study was to examine the effects of a short-term time management intervention on procrastination. Procrastination is a serious issue for many students and associated with different negative consequences, such as anxiety or low grades. As procrastination is described as a self-regulatory failure, a training programme focussing on self-regulatory skills might be helpful. We randomly assigned 96 students to a treatment (n?=?47) and a control group (n?=?49). As hypothesised, participants of the control group showed procrastination: they spent more time on a self-selected, important academic task right before the deadline was reached compared to the weeks before. The participants of the treatment group, instead, allocated their work time more equally and did not show procrastination. Therefore, the explored time management intervention prevents from a serious time management problem. 相似文献