中国科学院机构知识库网格系统: 检索

浏览/检索结果: 共4条，第1-4条

帮助

条数/页：排序方式：
	A Factor Decomposing Model of Water Use Efficiency at Sector Level and Its Application in Beijing 期刊论文 OAI收割 JOURNAL OF SYSTEMS SCIENCE & COMPLEXITY, 2016, 卷号: 29, 期号: 2, 页码: 405-427 作者: Liu Xiuli; Hewings, J. D. Geoffrey; Chen Xikang; Wang Shouyang \| 收藏 \| 浏览/下载：24/0 \| 提交时间：2018/07/30 Beijing factor decomposition method water use efficiency
	A domain decomposition based method for two-dimensional linear elastic fractures 期刊论文 OAI收割 ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS, 2016, 卷号: 66, 页码: 34-48 作者: Liu, Zhijun; Zheng, Hong; Sun, Cong \| 收藏 \| 浏览/下载：21/0 \| 提交时间：2018/06/05 Domain decomposition Williams' series Numerical manifold method Lagrange multiplier Local refinement Stress intensity factor
	Study of the neural network constitutive models for turfy soil with different decomposition degree (EI CONFERENCE) 会议论文 OAI收割 2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011, July 15, 2011 - July 17, 2011, Inner Mongolia, China 作者: Nie L. 收藏 \| 浏览/下载：18/0 \| 提交时间：2013/03/25 The turfy soil is of a special humus soil. The decomposition degree is the main factor on the physical and mechanical properties of turfy soil. To build the turfy soil constitutive model there are a few shortages such as the calculation cumbersome and low accuracy for parameter value with the method of traditional models. Furthermore those methods did not reflect the influence of strength that effected by decomposition degree of the turfy soil. In this paper the relationship of stress-strain with different decomposition degrees of turfy soil was carried out through indoor tests. Based on above experimental results an improved method which divided into different zones according to different decomposition degrees of turfy soil and calculated combining with neural network constitutive model is put forward. The result shows that the neural network of turfy soil has good fitting precision and good generalization ability. It can fully describe the influence of the turfy soil. 2011 IEEE.
	Novel algorithm for computer-aided alignment of wide field of view complex optical system (EI CONFERENCE) 会议论文 OAI收割 Yang X.; Han C. 收藏 \| 浏览/下载：32/0 \| 提交时间：2013/03/25 With the advent of the new complex optical system alignment technology is necessary. In this paper is presented an alignment algorithm whose main idea is composed of damped least square method and singular value decomposition method. In addition the how and why to enter the damped factor into algorithm is explained. According to this algorithm an alignment software package was compiled and compared self-compiled software with alignment package of CODE V. Results show that this self-compiled software is much more valid than alignment package of CODE V. For a field of view of 2 R-C system average MTF over the field of view was greater than 0.3 at 50 line pairs /mm.