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Aharon Gero Ilya Levin 《International Journal of Mathematical Education in Science & Technology》2019,50(5):779-787
The invention of the computer has led to the establishment of a new research paradigm, computation, which has recently become more and more popular in scientific exploration. However, computation is not well represented in high school and university curricula in science and engineering, although it applies to a wide range of disciplines beyond computer science and software engineering. In light of the increasing need to provide students with computational education, this paper presents a novel way to develop computational thinking among students. The proposed approach is based on the implementation of Papert's theory of constructionism in electronic spreadsheets. In this approach, students build their knowledge while constructing the difference equation that describes a physical (or engineering) phenomenon, based on specific cases investigated in the spreadsheet. The method does not require the students to write code or perform complex calculations in the spreadsheet and makes it possible to teach advanced subjects at a relatively early stage. The method is demonstrated through contents taken from the secondary and tertiary curricula in mechanics and electromagnetism. 相似文献
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Thomas W. Gero Larry W. Jaques Richard P. Mays Debra H. Reid Dwight A. Shamblee Young S. Lo 《合成通讯》2013,43(3-4):553-559
A convenient method to prepare 5-halo-2-hydroxy-nicotinic acid is described. 相似文献
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A. Burr F. M. Berberich Sprinkmeyer Diedrichs E. Ackermann C. Valencien E. Müller-Hössly G. Cornalba Wuyt Courtoy F. Bordas F. Touplain R. Sanfelici G. Knappe H. Durand W. Gero R. Eichloff H. Bleçkmann L. Mathieu L. Ferré W. D. Kooper E. Oertel A. Kling P. Roy L. Ronnet L. Vandam R. Ledent E. Comanducci T. Jona Tillmans Schneehagen 《Analytical and bioanalytical chemistry》1920,59(5-6):266-273
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The rapid development of high-speed trains like the TGV or the ICE in recent years results in high dynamic loads causing vibrations which propagate from the train-track structure into the ground and further into nearby buildings. In this context it is important to develop rigid tracks with improved dynamic behaviour and to investigate possible means of vibration reduction. The boundary element method in frequency and time domain is used to simulate train-track structures subjected to dynamic loading and the reduction of vibrations which for instance can be achieved via a trench running parallel to the rigid track. In this context the non-causality error, which arises when the time-domain BEM algorithm is applied to mathematically concave domains, is discussed and the substructure method is proposed as a solution to this problem. A two-layered cylindrical elastic structure on a half-space with a trench is added as an example of a possible application. 相似文献
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A. Burr F. M. Berberich Sprinkmeyer Diedrichs E. Ackermann C. Valencien E. Müller-Hössly G. Cornalba Wuyt Courtoy F. Bordas F. Touplain R. Sanfelici G. Knappe H. Durand W. Gero R. Eichloff H. Bleçkmann L. Mathieu L. Ferré W. D. Kooper E. Oertel A. Kling P. Roy L. Ronnet L. Vandam R. Ledent E. Comanducci T. Jona Tillmans und Schneehagen 《Fresenius' Journal of Analytical Chemistry》1920,59(5-6):266-273
Ohne Zusammenfassung 相似文献
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The effect of surfactants on surface instabilities of thin liquid film flow on a rotating disk was studied at different flow rates Q (0.5相似文献