全文获取类型
收费全文 | 150篇 |
免费 | 0篇 |
国内免费 | 4篇 |
专业分类
教育 | 97篇 |
科学研究 | 40篇 |
体育 | 6篇 |
综合类 | 3篇 |
信息传播 | 8篇 |
出版年
2021年 | 2篇 |
2020年 | 1篇 |
2019年 | 2篇 |
2016年 | 1篇 |
2015年 | 5篇 |
2014年 | 10篇 |
2013年 | 4篇 |
2012年 | 12篇 |
2011年 | 13篇 |
2010年 | 13篇 |
2009年 | 7篇 |
2008年 | 15篇 |
2007年 | 18篇 |
2006年 | 11篇 |
2005年 | 12篇 |
2004年 | 5篇 |
2003年 | 6篇 |
2002年 | 1篇 |
2001年 | 2篇 |
2000年 | 2篇 |
1999年 | 4篇 |
1998年 | 1篇 |
1993年 | 3篇 |
1992年 | 1篇 |
1991年 | 2篇 |
1990年 | 1篇 |
排序方式: 共有154条查询结果,搜索用时 15 毫秒
81.
有限单元法是进行数值计算及解决工程问题的重要工具,"有限单元法"课程的教学包括理论教学、程序教学及软件教学。其中,程序教学是培养研究生编程能力及创新能力的重要途径之一。针对当前研究生"有限单元法"课程在程序教学方面存在的问题,分析总结了有限元教学程序的选择原则,建议选择简短完整、与学生的专业方向有关的程序作为有限元教学程序,提出了"以点带面,点面结合"的有限元程序教学模式及具体的教学方法。通过指导学生绘制有限元程序流程图、学习重点子程序的编程、运行并修改有限元程序、小组交流与讨论等方式来组织教学,可以有效激发研究生学习"有限单元法"课程的热情,加深对有限单元法理论知识的理解,提高研究生的编程能力及创新能力。 相似文献
82.
有限元软件在电机教学中的应用 总被引:2,自引:2,他引:0
随着计算机的应用日益广泛深入,电机教学也强调引进最新的工程计算方法,有限元软件作为一种使用方便的软件越来越多地应用在工程实践中。为了实现教学和科研相结合,该文介绍了ANSYS软件,应用软件对永磁发电机在多种条件下的磁场进行了计算,并且通过动画表明了旋转磁场和静态磁场的形成和分布,便于学生理解和学习。 相似文献
83.
修辞策略的酝酿、生成是一个非常复杂的动态过程.制约和影响这一过程的有众多因素.其中综合修养、交际目的、逻辑思维和语言材料在修辞策略的生成过程中具有特别重要的地位,抓住了这四个要素,就能够基本勾画出策略生成系统的面貌. 相似文献
84.
LU Na XU L.J Miedzifiski B 《浙江大学学报(A卷英文版)》2007,8(3):393-396
Undesirable repulsive force between contact members due to both a current path shrink near a real contact area and/or so-called pinch effect is particularly onerous for power switch applications, and results in either contact floating or bouncing which are associated with an electric arc following contact welding. This problem is of great importance for any circuit breaker especially for compact low voltage vacuum circuit breakers. To avoid contact floating at closure and during any inrush current under short circuit conditions, the electrodynamic repulsive force can be employed successfully if we use a special compensation system flexibly combined with the contact itself. However to select and design the compensation system properly, its efficiency has to be known. This paper presents an approach to obtain the electrodynamic force value depending on different shaped (rectangular, square, circle and arch) copper plates used in the compensator by using ANSYS for current values 40 kA RMS. Curve-fitting was done according to the calculating results, the optimization designing of compensation unit is based on them. 相似文献
85.
大豆叶面喷硒可明显提高籽粒硒含量,以鼓粒期一次喷施亚硒酸钠水溶液效果最佳,籽粒硒含量最高可比对照提高31.71倍。大豆叶面喷硒对植株生长及产量无不良影响。 相似文献
86.
本文讨论固支障碍问题所联系的变分不等式非协调有限元逼近,在合理的正则性假设 下对于一类协调板元其中所括Morley元,第一类及第二类Fraeijs ds Veubeke元,Adini元,Zieneiwez元及不完全双二次非协调WS元得到对应有限元离散问题的误差估计为 相似文献
87.
88.
Robert J. Mills Tanya Y. Beaulieu David F. Feldon David H. Olsen 《Decision Sciences Journal of Innovative Education》2020,18(2):313-338
For some time, there has been a call for cross‐disciplinary teaching within the business disciplines. With the rise of data and analytics, there is an opportunity for cross‐disciplinary teaching by integrating technology throughout the business curriculum. However, many business professors have little experience in cross‐disciplinary teaching. We hope to rectify this by introducing an approach that uses prelecture material to prepare students for learning concepts and terms that are not core to the focal class. In a study that combines Structured Query Language (SQL) coding with an audit principle called Benford's Law, we analyze the impact of adding prelecture material about Benford's Law on student's cognitive load, knowledge gained, and instructional efficiency. Results indicate that students who received a prelecture on Benford's Law outperformed the control group in performance measures related to Benford's Law, and that the instructional efficiency on Benford's Law was also higher for the treatment group. We did not find any significant differences in cognitive load between the two groups, nor did the treatment group perform significantly better when tested on the SQL concepts. We conclude that cross‐discipline teaching is a fine balance between each discipline and communicating to students the importance of both disciplines is key. 相似文献
89.
Brian J. Sullivan 《Journal of The Franklin Institute》2010,347(4):672-680
The Franklin Institute, Philadelphia, PA awarded the 2006 Benjamin Franklin Medal in civil engineering to Ray W. Clough for revolutionizing engineering and scientific computation, and engineering design methods through his formulation and development of the finite element method, and for his innovative leadership in applying the method to the field of earthquake engineering with special emphasis on the seismic performance of dams. 相似文献
90.
本文介绍了利用CAXA电子图板提供的自定义图库功能创建企业标准件库的方法,可以在不需任何编程知识,只需要具备简单的三角函数及解析几何知识的情况下,通过创建图符及相应标准件的数据库,即可方便地创建出符合企业要求的标准件库,对提高企业设计水平及设计效率具有极大的帮助。 相似文献