中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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浏览/检索结果: 共8条,第1-8条 帮助

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Local vs. cross station simulation of suspended sediment load in successive hydrometric stations: heuristic modeling approach 期刊论文  OAI收割
Journal of Mountain Science, 2016, 卷号: 13, 期号: 10, 页码: 1773-1788
作者:  
Kiyoumars ROUSHANGAR;  Shabnam HOSSEINZADEH;  Jalal SHIRI
收藏  |  浏览/下载:31/0  |  提交时间:2016/09/28
Daily and Monthly Suspended Sediment Load Predictions Using Wavelet Based Artificial Intelligence Approaches 期刊论文  OAI收割
Journal of Mountain Science, 2015, 卷号: 12, 期号: 1, 页码: 85-100
Vahid NOURANI; Gholamreza ANDALIB
收藏  |  浏览/下载:28/0  |  提交时间:2015/01/16
Structural design of primary mirror subassembly for space telescope (EI CONFERENCE) 会议论文  OAI收割
2nd International Conference on Mechatronics and Applied Mechanics, ICMAM 2012, December 8, 2012 - December 9, 2012, Taiwan
作者:  
Xu H.
收藏  |  浏览/下载:63/0  |  提交时间:2013/03/25
In order to design a large aperture primary mirror with the diameter of 1150 mm  the parameters impacting on gravity deformation of the mirror were analyzed and discussed in detail  including material selection  diameter-thickness ratio  the number of the support points  location selection and lightweight structure  etc. A novel space mirror structure system was put forward  and its back was opened and supported by six points on back. The dynamic and static and thermal characteristics were analyzed based on the finite element method. Analysis results showed the surface figure accuracy reached to RMS 14.5nm under the action of gravity load along the optical axis direction and the first-order natural frequency was 214Hz which met to the designed indexes requirements. (2013) Trans Tech Publications  Switzerland.  
Lightweight design and analysis of support structure of certain UAV engine (EI CONFERENCE) 会议论文  OAI收割
2012 International Conference on Electrical Insulating Materials and Electrical Engineering, EIMEE 2012, May 25, 2012 - May 27, 2012, Shenyang, Liaoning, China
Xing X.; Liu B.; Han X.; Jia H.
收藏  |  浏览/下载:31/0  |  提交时间:2013/03/25
Support structure of UAV (Unmanned Aerial Vehicle) engine is the important support for UAV engine  playing a support role and bearing extremely complex load  so its lightweight  strength and dynamic characteristics have a great influence on high performance of UAV. This paper focuses on UAV having the requirement of high performance and stability to the support structure of engine  and uses the software of MSC.Patran and MSC.Nastran and topology optimization criterion to lightweight design and analysis the support structure of UAV engine under the premise condition of existing constraints. Then the static strength and modal are analyzed for the result of lightweight design  and the strength of the model and dynamic characteristics are verified. (2012) Trans Tech Publications  Switzerland.  
Improvement in load support capability of a-C(Al)-based nanocomposite coatings by multilayer architecture 期刊论文  OAI收割
Surface and Coatings Technology, 2011, 卷号: 206, 页码: 387-394
作者:  
Wang LP(王立平);  Xue QJ(薛群基);  Wang LP(王立平)
收藏  |  浏览/下载:17/0  |  提交时间:2012/09/24
Integrated context tacit knowledge manage model (EI CONFERENCE) 会议论文  OAI收割
2011 7th International Conference on Natural Computation, ICNC 2011, July 26, 2011 - July 28, 2011, Shanghai, China
作者:  
Liu G.;  Wang Y.-C.;  Wang Y.-C.
收藏  |  浏览/下载:31/0  |  提交时间:2013/03/25
Aimed at solving the practical problem about the difficult in the acquirement  the transformation and the sharing of the tacit knowledge  this paper have constructed a integrated context tacit knowledge modelCTKM  and the paper is based on the conclusion that knowledge is the product of certain context  the value of the knowledge depends on its context. Firstly  the model described in this paper fulfills online knowledge mutual platform  and it provide a support for the sharing transmission of the knowledge and the collection of tacit knowledge and knowledge context elements. After that  the paper constructs a context management model to finish the design of context recognition acquisition scheme and problem-based context modeling. Lastly  on the basis of the context model the paper fulfill the acquisition the expression  the sharing and the storage in the tacit knowledge management. CTKM model provide a solution of the integrated context for the tacit knowledge management and through the load of context elements achieve the effective sharing of the tacit knowledge. 2011 IEEE.  
Dynamical Component Integration Approach for the Development of Internet GIS and Its Performance Improvement 会议论文  OAI收割
Jing T.; Baiping Z.; Li W.; Ieee
收藏  |  浏览/下载:31/0  |  提交时间:2012/06/30
Study on electroless Ni-P-ZrO2 composite coatings on AZ91D magnesium alloys 期刊论文  OAI收割
Surface Engineering, 2007, 卷号: 23, 期号: 5, 页码: 334-338
Y. W. Song; D. Y. Shan; R. S. Chen; E. H. Han
收藏  |  浏览/下载:17/0  |  提交时间:2012/04/13