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LUOJun LUTian－sheng 《上海大学学报(英文版)》2001,5(4):312-316
From a bionics viewpoint,this paper proposes a mechanical model of a wheeled snake-like mobile mechanism.On the hypothesis of the existing non-holonomic constraints on the robot kinematics,we set up the relationship among the kinetic control parameters in the snake-like movement using Lie group and Lie algebra of the principle fiber bundle and provide some theoretical control methods to realize the snake-like locomotion. 相似文献
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KAI JAKOBS CLAUDIA POPIEN ULRICH QUERNHEIM RÜDIGER VERMÖHLEN 《European Journal of Engineering Education》1993,18(2):129-136
This paper describes the experiences gathered at Aachen University's computer science department while running one of the first TEMPUS projects. An outline of the historical background is followed by a brief introduction to the TEMPUS programme as such. The aims and goals of our project, BASCULE, are then described in more detail. Finally, we discuss the lessons we have learned. 相似文献
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Although the importance of nature of science (NOS) instruction for learners as young as kindergartners is emphasised in a great number of documents and studies, very little research has been conducted in early childhood contexts. Thus, researchers are still not able to see a comprehensive picture of young children’s understandings of NOS. The purpose of this qualitative study is to investigate kindergartners’ developmental ability to comprehend tenets of NOS. Using an explicit–reflective approach and activities designed to develop their understandings of NOS, we instructed eight kindergartners for 10 days over the course of a month to document changes in their thinking. To this end, they were interviewed individually using Young Children’s Views of Science before and after instruction. The results indicate that generally, the kindergartners had an inadequate understanding of NOS before instruction but had developed it by the end of instruction. Each child’s understanding of the individual aspects of NOS developed to different degrees, creative NOS improving most substantially. This study corroborates that kindergartners are not developmentally constrained to develop informed NOS understandings. On the contrary, they are able to develop an informed understanding of NOS that can be improved by the implementation of explicit–reflective instruction. 相似文献
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Çakiroğlu Ünal Güven Onurhan Saylan Esin 《Educational technology research and development : ETR & D》2020,68(6):3425-3448
Educational technology research and development - This paper reports on a study aiming at examining the development of science process skills through the implementation of experiments in a science... 相似文献
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Education and Information Technologies - This study aims to use LMS log data to suggest a way to understand CoI constructs. Students’ interactions in Moodle components were weighted for... 相似文献
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Education and Information Technologies - The COVID-19 pandemic has affected educational institutions deeply and globally. In the course of the pandemic, countries around the world have tried to... 相似文献