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Mining API usage change rules for software framework evolution

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Science China(Information Sciences) 2018年第5期61卷 104-106页

作者： ping yu Fei YANG Chun cao Hao HU Xiaoxing MA State Key Laboratory for Novel Software Technology Nanjing University Department of Computer Science and Technology Nanjing University

Dear editor,Software frameworks or libraries are frequently evolving APIs(application programming interfaces)to include new features,improve performance or fix *** relying on these APIs should be updated according to these *** modern IDEs(integrated development environments)such as Eclipse and Intelli J IDEA are able to provide compile error reports or warnings to nonexistent or deprecated ***,developers still have to search for precise replacement APIs and check their usage to fix bugs or

关键词： API AUC

3D SLOPE STABILITY ANALYSIS WITH KINEMATICAL ELEMENT TECHNIQUE

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中国有色金属学会会刊：英文版 1999年第2期9卷 218-222页

作者： cao, ping Gussmann, Peter Central South Univ of Technology Changsha China

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关键词： kinematical element methodstability analysisthree dimensional slope

Exploring evolutionary features of directed weighted hazard network in the subway construction

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Chinese Physics B 2019年第3期28卷 399-407页

作者： Gong-yu Hou Cong Jin Zhe-Dong Xu ping yu Yi-Yi cao School of Mechanics and Civil Engineering China University of Mining and Technology School of Mining Engineering and Geology Xinjiang Institute of Engineering

A better understanding of previous accidents is an effective way to reduce the occurrence of similar accidents in the future. In this paper, a complex network approach is adopted to construct a directed weighted hazard network(DWHN) to analyze topological features and evolution of accidents in the subway construction. The nodes are hazards and accidents, the edges are multiple relationships of these nodes and the weight of edges are occurrence times of repetitive relationships. The results indicate that the DWHN possesses the property of small-world with small average path length and large clustering coefficient, indicating that hazards have better connectivity and will spread widely and quickly in the network. Moreover,the DWHN has the property of scale-free network for the cumulative degree distribution follows a power-law *** makes DWHN more vulnerable to target attacks. Controlling key nodes with higher degree, strength and betweenness centrality will destroy the connectivity of DWHN and mitigate the spreading of accidents in the network. This study is helpful for discovering inner relationships and evolutionary features of hazards and accidents in the subway construction.

关键词： accident analysis directed weighted network complex network evolutionary features

Support technology of deep roadway under high stress and its application

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International Journal of Mining Science and Technology 2016年第5期26卷 787-793页

作者： cao Rihong cao ping Lin Hang School of Resources and Safety Engineering Central South University Changsha 410083 China State Key Laboratory of Coal Resources and Safety Mining School of Mines China University of Mining ＆ Technology Xuzhou 221116 China

Roadway instability has been a major concern in the fields of mining engineering. This paper aims to provide practical and efficient strategy to support the roadways under high in-situ stress. A case study on the stability of deep roadways was carried out in an underground mine in Gansu province, China. Currently,the surrounding rock strata is extremely fractured, which results in a series of engineering disasters, such as side wall collapse and severe floor heave in the past decades. Aiming to solve these problems, an improved support method was proposed, which includes optimal bolt parameters and arrangement, floor beam layout by grooving, and full length grouting. Based on the modeling results by FLAC3D, the new support method is much better than the current one in terms of preventing the large deformation of surrounding rock and restricting the development of plastic zones. For implementation and verification, field experiments, along with deformation monitoring, were conducted in the 958 level roadway of Mining II areas. The results show that the improved support can significantly reduce surrounding rock deformation, avoid frequent repair, and maintain the long-term stability of the roadway. Compared to the original support, the new support method can greatly save investment of mines, and has good application value and popularization value.

关键词： Deep roadway Floor heave High stress Support Steel beam

On environment-driven software model for Internetware

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Science in China(Series F) 2008年第6期51卷 683-721页

作者： Lǔ Jian MA XiaoXing TAO Xianping cao Chun HUANG yu yu ping State Key Laboratory for Novel Software Technology Institute of Computer Software Nanjing UniversityNanjing 210093 China

Internetware is envisioned as a general software paradigm for the application style of resources integration and sharing in the open, dynamic and uncertain platforms such as the Internet. Continuing the agent-based Internetware model presented in a previous paper, in this paper, after an analysis of the behavioral patterns and the technical challenges of environment-driven applications, a software-structuring model is proposed for environment-driven Internetware applications. A series of explorations on the enabling techniques for the model, especially the modeling, management and utilization of context information are presented. Several proto-typical systems have also been built to prove the concepts and evaluate the techniques. These research efforts make a further step toward the Internetware paradigm by providing an initial framework for the construction of context-aware and self-adaptive software application systems in the open network environment.

关键词： software engineering Internetware context-awareness self-adaptation

Synthesis and Biological Activities of N-Phosphoryl Branched Peptides

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Chinese Chemical Letters 2003年第4期14卷 343-346页

作者： Sheng Li cao yu Yang JIANG yu ping FENG Yan Ling NIU yu Fen ZHAO Key Laboratory of Bioorganic Phosphorus Chemistry Ministry of EducationDepartment of ChemistryTsinghua UniversityBeijing 100084 Department of Chemistry Capital Normal UniversityBeijing 100037

A series of N-phosphoryl branched peptides were synthesized by coupling of various N-phosphoryl amino acids to L-Lysine methyl ester, and their structures were confirmed by 31P NMR, 1H NMR, MS and elemental analysis. The results of cell biological tests indicated that compound 1d and 1e obviously inhibited the growth of both K562 and A2780 cells.

关键词： N-Phosphoryl branched peptide synthesis biological activity apoptosis.

Design methods of rhombic tensegrity structures

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Acta Mechanica Sinica 2010年第4期26卷 559-565页

作者： Xi-Qiao Feng yue Li Yan-ping cao Shou-Wen yu yuan-Tong Gu AML Department of Engineering Mechanics Tsinghua University Beijing 100084 China School of Engineering Systems Queensland University of Technology GPO Box 2434 Brisbane QLD 4001 Australia

As a special type of novel flexible structures, tensegrity holds promise for many potential applications in such fields as materials science, biomechanics, civil and aerospace engineering. Rhombic systems are an important class of tensegrity structures, in which each bar constitutes the longest diagonal of a rhombus of four strings. In this paper, we address the design methods of rhombic structures based on the idea that many tensegrity structures can be constructed by assembling one-bar elementary cells. By analyzing the properties of rhombic cells, we first develop two novel schemes, namely, direct enumeration scheme and cell-substitution scheme. In addition, a facile and efficient method is presented to integrate several rhombic systems into a larger tensegrity structure. To illustrate the applications of these methods, some novel rhombic tensegrity structures are constructed.

关键词： Tensegrity Structural design Assembling method Flexible structure

Joint Bearing Mechanism of Coal Pillar and Backfilling Body in Roadway Backfilling Mining Technology

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Computers, Materials & Continua 2018年第2期54卷 137-159页

作者： Zhengzheng cao ping Xu Zhenhua Li Minxia Zhang yu Zhao Wenlong Shen School of Civil Engineering Henan Polytechnic UniversityJiaozuo 454000China School of Energy and Engineering Henan Polytechnic UniversityJiaozuo 454000China

In the traditional mining technology,the coal resources trapped beneath surface buildings,railways,and water bodies cannot be mined massively,thereby causing the lower coal recovery and dynamic *** order to solve the aforementioned problems,the roadway backfilling mining technology is developed and the joint bearing mechanism of coal pillar and backfilling body is presented in this *** mechanical model of bearing system of coal pillar and backfilling body is established,by analyzing the basic characteristics of overlying strata deformation in roadway backfilling mining *** to the Ritz method in energy variation principle,the elastic solution expression of coal pillar deformation is deduced in roadway backfilling mining *** on elastic-viscoelastic correspondence principle,combining with the burgers rheological constitutive model and Laplace transform theory,the viscoelastic solution expression of coal pillar deformation is obtained in roadway backfilling mining *** analyzing the compressive mechanical property of backfilling body,the time formula required for coal pillar and backfilling body to play the joint bearing function in roadway backfilling mining technology is *** example analysis indicates that the time is 140 *** results can be treated as an important basis for theoretical research and process design in roadway backfilling mining technology.

关键词： Roadway backfilling mining technology coal pillar backfilling body joint bearing mechanism energy variation principle

Geometric measure of quantum discord and the geometry of a class of two-qubit states

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Science China(Physics,Mechanics & Astronomy) 2013年第4期56卷 737-744页

作者： SONG Wei yu LongBao DONG ping LI DaChuang YANG Ming cao ZhuoLiang School of Electronic and Information Engineering Hefei Normal University Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics University of Science and Technology of China School of Physics and Material Science Anhui University

We investigate the geometric picture of the level surfaces of quantum entanglement and geometric measure of quantum discord(GMQD) of a class of X-states, respectively. This pictorial approach provides us a direct understanding of the structure of entanglement and GMQD. The dynamic evolution of GMQD under two typical kinds of quantum decoherence channels is also investigated. It is shown that there exists a class of initial states for which the GMQD is not destroyed by decoherence in a finite time interval. Furthermore, we establish a factorization law between the initial and final GMQD, which allows us to infer the evolution of entanglement under the influences of the environment.

关键词： geometric measure of quantum discord geometric picture two-qubit states