|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | FLOOD DISCHARGE AND ENERGY DISSIPATION BY JETS FROM OUTLETS IN HIGH ARCH DAM显示文摘In this thesis, the scale effect by an aerated water jet diffusing in the water upon the hydrodynamic pressure, the local riverbed scour by multiple layered jets and by those colliding in the vertical and the transverse directions, and the stability of the apron slab both in the inverted arch cushion pool and the flat bottom one by the large discharge and the high water head with 300m level are detailedly researched by means of model test and numerical simulation. A mathematic model simulating the destabilization of the flat bottomed slab is established to open out the mechanism of its stability. Both experimental researches both on the hydrodynamic pressure acted inside joints between the bedrock and the apron slab, and on forces at arch abutments in inverted arch cushion pool are carried out by using an advanced measurement and the imitation means to acquire the mechanism of the inverted arch pool to keep stability and its stability condition. | Ph.D.Candidate:Sun JianXi’an University of Technolgy, Xi’an 710048, ChinaSupervisor:Yu Changzhao (Tsinghua University, Beijing 100084, China)Li Yuzhu (Tsinghua University, Beijing 100084, China)Chen Changzhi (Tsinghua University, Beijing 100084, China)Members of Dissertation Defense Committee:Gao Jizhang (China Institute of Water Resources and Hydropower Research), ChairmanLi Guifen (China Institute of Water Resources and Hydropower Research)Cui Guangtao (Tianjing University)Wang Xingkui (Tsinghua University)Yu Changzhao (Tsinghua University)Li Yuzhu (Tsinghua University)Chen Changzhi (Tsinghua University) | 2003 | Journal of Hydrodynamics2003，15，1： | 39 |
| 2 | 表土孢粉模拟的中国生物群区显示文摘根据中国第四纪孢粉数据库提供的 6 41个表土孢粉资料 ,利用孢粉生物群区化方法 ,建立了具有 6 86个孢粉类群、31类植物功能型和 14种生物群区的孢粉生物群区化模型。经过检验 ,该模型在模拟中国生物群区、生物群区垂直分异和水平梯度分析方面均取得理想结果。模型已实现了计算机程序化 ,为重建过去地质历史时期的古生物群区和古气候分析 ,提供客观、准确的模型工具。 | Members of China Quternary Pollen Data Base * | 2001 | Acta Botanica Sinica2001，43，2： | 28 |
| 3 | EXPERIMENTAL STUDY OF FLOWFIELD STRUCTURE AROUND AN OGIVE-CYLINDER显示文摘The flowfield structure and their aerodynamic characteristics over an ogive cylinder were studied by means of flow visualization and surface pressure measurement in a water tunnel and a wind tunnel. The existence of multi asymmetric vortices over long slender bodies was experimentally confirmed at large angles of attack and in the subcritical Reynolds number range. The spatial 3 D characteristics of the multi vortices system were analyzed and a physical model was developed. The topological structure of different patterns in cross flow plane was studied and the mechanism governing the formation of asymmetric vortices and multi vortices was discussed from the viewpoint of stability of the topological structure. It was concluded that the maximum in the sectional side force distribution curve are not caused by the shedding of higher position vortex, but by the cross over to the symmetric plane of the lower position vortex. | Ph.D.Candidate:Wang Gang Fluid Mechanics Institute, Beijing University of Aeronautics and Astronautics, Beijing 100083, China,Supervisor: Deng Xue ying (Beijing University of Aeronautics and Astronautics) Members of Dissertation Defense Committee: Tong Bing gang (Graduate School of the Chinese Academy of Sciences),Chairman Gu Zhi fu (Peking University) Yang Qi de (China Aerodynamics Research and Development Center) Lv Zhi yong (Beijing University of Aeronautics and Astronautics) Liu Pei qing (Beijing University of Aeronautics and Astronautics) | 2003 | Journal of Hydrodynamics2003，15，5： | 18 |
| 4 | ON SOME KEY SEDIMENTATION PROBLEMS OF THREE GORGES PROJECT (TGP)显示文摘This article addresses the problems of maintaining a useful life for the reservoir. flood stages to be anticipated at Chongqing, sedimentation in its region of fluctuating backwater. deposition of sediment in the vicinity of the dam and assessment of any possible impacts of the project on the estuary of the Yangtze River. | Lin Bingnan Dou Guoren Xie Jianheng Dai Dingzhong Chen Jisheng Tang Richang and Zhang Ren (Members of the Sedimentation Specialist Group. for the feasibility study of TGP.) | 1989 | International Journal of Sediment Research1989，4，1： | 12 |
| 5 | Nonlinear Dynamics and Stability of Neural Networks with Delay-Time显示文摘In this paper we study the dynamic properties and stabilities of neural networks with delay-time (which includes the time-varying case) by differential inequalities and Lyapunov function approaches. The criteria of connective stability, robust stability, Lyapunov stability, asymptotic atability, exponential stability and Lagrange stability of neural networks with delay-time are established, and the results obtained are very useful for the design, implementation and application of adaptive learning neural networks. | L. C. Jiao, member, IEEE, and Zheng Bao, Senior member, IEEECenter for Neural Networks and Institute of Elec. Eng, Xidian University, Xian 710071, China | 1992 | Journal of Systems Engineering and Electronics1992，3，2： | 11 |
| 6 | NUMERICAL SIMULATIONS OF CAVITATING FLOWS显示文摘A new model, which involves viscous and multi-phase effects, was given to study cavitating flows. A local compressible model was established by introducing a density-pressure function to account for the two-phase flow of water/vapor and the transition from one phase to the other. An algorithm for calculating variable-density N-S equations of cavitating flow problem was put forward. The present method yields reasonable results for both steady and unsteady cavitating flows in 2D and 3D cases. The numerical results of unsteady character of cavitating flows around hydrofoils coincide well with experimental data. It indicates the feasibility to apply this method to a variety of cavitating flows of practical problems. | Ph.D.Candidate:Wu Lei School of Civil Engineering and Mechanics, Shanghai Jiaotong University, Shanghai 200240, China Supervisor:Lu Chuan-jing (Shanghai Jiaotong University) Xue Lei ping (Shanghai Jiaotong University) Members of Dissertation Defense Committee:Dong Shi-tang (China Ship Scientific Research Center),Chairman Dai Shi-qiang (Shanghai University) Zhang Hui-sheng (Fudan University) Miao Guo-ping (Shanghai Jiaotong Universi ty) He You-sheng (Shanghai Jiaotong University)Liu Hua (Shanghai Jiaotong University) Lu Chuang-jing (Shanghai Jiaotong Universi ty) | 2003 | Journal of Hydrodynamics2003，15，4： | 9 |
| 7 | Labeled yon Neumann Architecture for Software-Defined Cloud显示文摘 | Yun-Gang Bao Sa Wang, Member, CCF | 2017 | Journal of Computer Science & Technology2017，32，2： | 8 |
| 8 | RESEARCH ON THE METHOD AND CALCULATION OF THE NEW SLENDER-SHIP WAVE RESISTANCE THEORY显示文摘Analyses of the new slender-ship theory of wave resistance were made and corresponding calculation methods were proposed. Based on these theoretical methods, the calculations of wave resistance of near surface submersible, Wigley hull and vertical/canted strut SWATHs were conducted. In the single and double integral parts of Green’s function, the method of special function expansion and Chebyshev polynomial approach were adopted respectively. The formulas for zeroth-first-and second-order wave-making resistance were derived. In a towing tank, the calm water resistance experiment of SWATH model ASW-2 with canted strut was conducted and researched. The influences of waterline integral term, the surface mesh number, element node number, range of the integration and truncation of special function expansions on velocity potential and numerical results of resistance were investigated, and the difference between the zeroth-order and first-order wave resistance was analyzed. The theoretical calculation results agree well with the well-found model experimental results. | Ph.D.Candidate:Han Duan-feng College of Shipbuilding Engineering, Harbin Engineering University, Harbing 150001, ChinaSupervisor: Huang De-bo (Harbin Engineering Univ.) Members of Dissertation Defense Committee: Dai Yi-shan (Harbin Engineering Univ.)Chairman Zhu Dian-ming (Science and Technology Commission of Heilongjiang Province) Huang Sheng (Harbin Engineering Univ.) Xu Yu-ru (Harbin Engineering Univ.) Zhang Liang (Harbin Engineering Univ.) | 2003 | Journal of Hydrodynamics2003，15，4： | 4 |
| 9 | Providing Virtual Cloud for Special Purposes on Demand in JointCloud Computing Environment显示文摘因为它的按需、有弹性的资源用法,云计算被企业广泛地采用了范例。当前,大多数云应用程序在一单个云上正在跑。然而,越来越,运用几到对面的应用需求遮蔽满足象最好的费用一样的要求效率,出售商占据的回避,和 geolocation 敏感服务。JointCloud 计算是中国研究所开始到计算问题与多重云担心了的地址的新研究。在里面 JointCloud,多样的用户和云资源上的动态要求被提供用户满足为特殊目的虚拟云(VC ) 。为特殊目的虚拟云在本质一有设定的软件的特定的云工作环境叠的用户,配置和容易地可得到的计算资源。这篇论文首先介绍什么是 JointCloud 计算然后在 JointCloud 描述设计基本原理,动机例子,机制和 VC 的创新技术。 | Dong-Gang Cao Member, CCF, IEEE, Bo An Pei-Chang Shi Huai-Min Wang | 2017 | Journal of Computer Science & Technology2017，32，2： | 4 |
| 10 | Preface显示文摘 | ZHANG HuanguoGeneral Chair of the CTCIT’06Professor of School of Computer , Wuhan UniversityAssociate Director of Fault Tolerant Computing Committee of China Computer FederationCouncil Member of the China Cryptography Association | 2006 | Wuhan University Journal of Natural Sciences2006，11，6： | 4 |
| 11 | New Development of China-Russia-India Triangle显示文摘Since 2001, positive improvement has occurred in the trianglerelationship between China, Russia and India. The foreignministers of the three nations met in Russia recently, symbolizingthe launching of substantive triangular cooperation. | Ma Jiali is Research Professor at CICIR. He specializes in South Asian security, especially in India’s foreign policy. He is the author of three books, such as Pay Close Attention to India: A Rising Power which is very influential. He was one of the delegates for Track Two Dialogue between China and India for all of four rounds and a delegate for Track Two Dialogue between China, Russia and India. He is also a member of Eminent Persons Group Forum between China and India. | 2005 | Contemporary International Relations2005，15，7： | 4 |
| 12 | 地质调查深化拓展应重视地球物理学——中国科学院院士刘光鼎研究员接受本刊专访显示文摘2013年1月25日下午,上海市地质调查研究院副总工程师兼总工程师办公室主任杨建刚教授与上海市地质调查研究院总工程师办公室副主任兼《上海国土资源》编辑部主任龚士良教授,专程赴中国科学院地质与地球物理研究所,拜访了该所原所长、中国地质大学(北京)地球物理与信息技术学院院长、中国科学院院士刘光鼎研究员,并代表《上海国土资源》期刊进行了专题访谈。刘院士阐述了综合地球物理学及其实践成果,强调地质学要与地球物理学相结合;指出地球物理是现代地球科学研究中的高新技术,在地质调查深化与工作领域拓展,特别是在海岸带与海洋地质调查中,应充分重视综合地球物理学的应用;地球物理勘探技术不仅是认识地球的重要手段,也要在资源勘查、环境保护、灾害防御等事关国计民生的重大领域中发挥更大作用,同时也是保护海洋国土、维护海洋权益的重要技术支撑;海洋地质的学科体系建设与完善,应将地球物理学纳入其中。 | Exclusive Interview with Professor LIU Guang-Ding,Member of the Chinese Academy of Sciences | 2013 | 上海国土资源2013，34，1： | 4 |
| 13 | A Review-Based Reputation Evaluation Approach for Web Services显示文摘Web services are commonly perceived as an environment of both offering opportunities and threats.In this environment,one way to minimize threats is to use reputation evaluation,which can be computed,for example,through transaction feedback.However,the current feedback-based approach is inaccurate and ineffective because of its inner limitations (e.g.,feedback quality problem).As the main source of feedback,the qualities of existing on-line reviews are often varied greatly from low to high,the main reasons include:(1) they have no standard expression formats,(2) dishonest comments may exist among these reviews due to malicious attacking.Up to present,the quality problem of review has not been well solved,which greatly degrades their importance on service reputation evaluation.Therefore,we firstly present a novel evaluation approach for review quality in terms of multiple metrics.Then,we make a further improvement in service reputation evaluation based on those filtered reviews.Experimental results show the effectiveness and efficiency of our proposed approach compared with the naive feedback-based approaches. | 李海华 杜小勇 Member 田萱 | 2009 | Journal of Computer Science & Technology2009，24，5： | 4 |
| 14 | Motion estimation in wide band synthetic aperture sonar based on the raw echo data using the method of displaced phase center antenna显示文摘Phase errors in synthetic aperture sonar (SAS) imaging must be reduced to less than one eighth of a wavelength so as to avoid image destruction. Most of the phase errors occur as a result of platform motion errors, for example, sway yaw and surge that are the most important error sources. The phase error of a wide band synthetic aperture sonar is modeled and solutions to sway yaw and surge motion estimation based on the raw sonar echo data with a Displaced Phase Center Antenna (DPCA) method are proposed and their implementations are detailed in this paper. It is shown that the sway estimates can be obtained from the correlation lag and phase difference between the returns at coincident phase centers. An estimate of yaw is also possible if such a technique is applied to more than one overlapping phase center positions. Surge estimates can be obtained by identifying pairs of phase centers with a maximum correlation coefficient. The method works only if the platform velocity is low enough such that a number of phase centers from adjacent pings overlap. | JIANG Xiaokui, SUN Chao (Member, IEEE), FANG Jie (Institute of Acoustic Engineering, Northwestern Polytechnical University, Xi’an 710072, China) | 2003 | 声学技术2003，22，z1： | 3 |
| 15 | Interactive Fault Localization Using Test Information显示文摘Debugging is a time-consuming task in software development.Although various automated approaches have been proposed,they are not effective enough.On the other hand,in manual debugging,developers have difficulty in choosing breakpoints.To address these problems and help developers locate faults effectively,we propose an interactive fault-localization framework,combining the benefits of automated approaches and manual debugging.Before the fault is found,this framework continuously recommends checking points based on statements' suspicions,which are calculated according to the execution information of test cases and the feedback information from the developer at earlier checking points.Then we propose a naive approach,which is an initial implementation of this framework.However,with this naive approach or manual debugging,developers' wrong estimation of whether the faulty statement is executed before the checking point(breakpoint) may make the debugging process fail.So we propose another robust approach based on this framework, handling cases where developers make mistakes during the fault-localization process.We performed two experimental studies and the results show that the two interactive approaches are quite effective compared with existing fault-localization approaches.Moreover,the robust approach can help developers find faults when they make wrong estimation at some checking points. | 郝丹 张路 Senior Member 谢涛 梅宏 孙家骕 | 2009 | Journal of Computer Science & Technology2009，24，5： | 3 |
| 16 | Leapfrog:Optimal Opportunistic Routing in Probabilistically Contacted Delay Tolerant Networks显示文摘Delay tolerant networks(DTNs) experience frequent and long lasting network disconnection due to various reasons such as mobility,power management,and scheduling.One primary concern in DTNs is to route messages to keep the end-to-end delivery delay as low as possible.In this paper,we study the single-copy message routing problem and propose an optimal opportunistic routing strategy—Leapfrog Routing—for probabilistically contacted DTNs where nodes encounter or contact in some fixed probabilities.We deduce the iterative computation formulate of minimum expected opportunistic delivery delay from each node to the destination,and discover that under the optimal opportunistic routing strategy,messages would be delivered from high-delay node to low-delay node in the leapfrog manner.Rigorous theoretical analysis shows that such a routing strategy is exactly the optimal among all possible ones.Moreover,we apply the idea of Reverse Dijkstra algorithm to design an algorithm.When a destination is given,this algorithm can determine for each node the routing selection function under the Leapfrog Routing strategy.The computation overhead of this algorithm is only O(n^2) where n is the number of nodes in the network.In addition,through extensive simulations based on real DTN traces,we demonstrate that our algorithm can significantly outperform the previous ones. | 肖明军 黄刘生 Senior Member 董群峰 刘安 杨振国 | 2009 | Journal of Computer Science & Technology2009，24，5： | 3 |
| 17 | Global-to-Local Approach to Rigorously Developing Distributed System with Exception Handling显示文摘Cooperative distributed system covers a wide range of applications such as the systems for industrial controlling and business-to-business trading, which are usually safety-critical. Coordinated exception handling (CEH) refers to exception handling in the cooperative distributed systems, where exceptions raised on a peer should be dealt with by all relevant peers in a consistent manner. Some CEH algorithms have been proposed. A crucial problem in using these algorithms is how to develop the peers which are guaranteed coherent in both normal execution and exceptional execution. Straightforward testing or model checking is very expensive. In this paper, we propose an e?ective way to rigorously develop the systems with correct CEH behavior. Firstly, we formalize the CEH algorithm by proposing a Peer Process Language to precisely describe the distributed systems and their operational semantics. Then we dig out a set of syntactic conditions, and prove its su?ciency for system coherence. Finally, we propose a global-to-local approach, including a language describing the distributed systems from a global perspective and a projection algorithm, for developing the systems. Given a well-formed global description, a set of peers can be generated automatically. We prove the system composed of these peers satisfies the conditions, that is, it is always coherent and correct for CEH. | 蔡超 裘宗燕 Senior Member, Member, CCF, IEEE 杨红丽 赵翔鹏 | 2009 | Journal of Computer Science & Technology2009，24，2： | 3 |
| 18 | 用于电力系统仿真的潮流控制器模型显示文摘本文描述了—族基于可关断晶闸管(GTO)电压源逆变器的电力系统控制装置,介绍了静补(STATCON)、串联潮流控制器(SPFC)和统一潮流控制器(UPC)的稳态模型。静补是由美国的EPRI、TVA和西屋科技中心联合开发的基于逆变器的并联装置、不久它将被安装在TVA的16lkV输电系统上用于控制线路电压。而串联潮流控制器和统一潮流控制器则代表了静补在串联应用方面的拓展。这些装置的建模可以结合到现有的大型电力系统分析程序之中供系统稳态研究使用。IEEE的30母线试验系统的仿真结果证明了这些电压源潮流控制装置的稳态性能。UPFC具有能同时对线路的有功与无功潮流独立地进行控制的能力,可以认为它特别适用厂输电潮流控制。 | J. Bian Meniber T. A Lemak Member(Power benration Business Unit Science and Technology CenterWestinghouse Electric Corporation. Pittsburrgh, PA, USA)K J. Nelson Member D. G. Ramey Aenior Member(Power Genration Business UnitWestinghouse Electric Corporat | 1995 | 电网技术1995，19，9： | 3 |
| 19 | A Novel Spatial Pooling Strategy for Image Quality Assessment显示文摘许多存在图象质量评价(IQA ) 度量标准分享一个类似的二阶段的框架:在第一个阶段,一张优秀地图被在引用的本地区域之间的比较构造并且弄歪图象;在第二个阶段,空间分享被采用获得全面优秀分数。在这个工作,我们通过优秀地图的统计分析为图象质量评价建议新奇空间分享策略。我们的深入的分析显示全面图象质量对优秀分发敏感。基于从优秀地图提取的分析,优秀直方图和统计描述符被用作输入到支持向量回归获得最后的客观优秀分数。三个大公共 IQA 数据库上的试验性的结果证明了建议空间分享的策略罐头极大地以与人的主观级别的关联改进原来的 IQA 度量标准的优秀预言性能。 | Qiaohong Li Yu-Ming Fang Member, CCF Jing-Tao Xu | 2016 | Journal of Computer Science & Technology2016，31，2： | 3 |
| 20 | Protection of Linguistic Rights in China显示文摘The International Community has become increasingly keen on linguistic rights, regarding such rights as important human rights. The International Academy of Linguistic Law (IALL) has organized eight international conferences on the subject, with the question of linguistic rights featuring prominently in all of them. Back in 1996, the Hong Kong Polytechnic University played host to an international | SU JINZHI director of the Social and Media Linguistics Division of the Institute of Linguistic Application under the Chinese Ministry of Education, and concurrently a Chinese member of the Preparatory Committee for the Ninth International Linguistic Law Conference. | 2003 | The Journal of Human Rights2003，2，6： | 3 |
您所在的机构暂未开通此部分的功能，请联系管理员