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| 1 | Determination of the maximum allowable gas pressure for an underground gas storage salt cavern——A case study of Jintan,China显示文摘Increasing the allowable gas pressure of underground gas storage(UGS) is one of the most effective methods to increase its working gas capacity. In this context, hydraulic fracturing tests are implemented on the target formation for the UGS construction of Jintan salt caverns, China, in order to obtain the minimum principal in situ stress and the fracture breakdown pressure. Based on the test results, the maximum allowable gas pressure of the Jintan UGS salt cavern is calibrated. To determine the maximum allowable gas pressure, KING-1 and KING-2 caverns are used as examples. A three-dimensional(3D)geomechanical model is established based on the sonar data of the two caverns with respect to the features of the target formation. New criteria for evaluating gas penetration failure and gas seepage are proposed. Results show that the maximum allowable gas pressure of the Jintan UGS salt cavern can be increased from 17 MPa to 18 MPa(i.e. a gradient of about 18 k Pa/m at the casing shoe depth). Based on numerical results, a field test with increasing maximum gas pressure to 18 MPa has been carried out in KING-1 cavern. Microseismic monitoring has been conducted during the test to evaluate the safety of the rock mass around the cavern. Field monitoring data show that KING-1 cavern is safe globally when the maximum gas pressure is increased from 17 MPa to 18 MPa. This shows that the geomechanical model and criteria proposed in this context for evaluating the maximum allowable gas pressure are reliable. | Tongtao Wang Jianjun Li Gang Jing Qingqing Zhang Chunhe Yang J.J.K.Daemen | 2019 | Journal of Rock Mechanics and Geotechnical Engineering2019，11，2： | 4 |
| 2 | The semi-global isometric embedding of surfaces with Gaussian curvature changing sign cleanly显示文摘A new method to solve the Gauss-Codazzi system is given in which we transform the linearized system to a partial differential equation of second order, and by the method we solve the problem of semi-global isometric embedding of surfaces with Gaussian curvature changing sign cleanly. | LI ChunHe | 2012 | Science China Mathematics2012，55，12： | 2 |
| 3 | On a Linear Equation Arising in Isometric Embedding of Torus-like Surface显示文摘The solvability of a linear equation and the regularity of the solution are discussed. The equation is arising in a geometric problem which is concerned with the realization of Alexandroff's positive annul in R3. | Chunhe LI | 2009 | Chinese Annals of Mathematics,Series B2009，30，1： | 2 |
| 4 | Modeling and Global Conflict Analysis of Firewall Policy显示文摘The global view of firewall policy conflict is important for administrators to optimize the policy.It has been lack of appropriate firewall policy global conflict analysis,existing methods focus on local conflict detection.We research the global conflict detection algorithm in this paper.We presented a semantic model that captures more complete classifications of the policy using knowledge concept in rough set.Based on this model,we presented the global conflict formal model,and represent it with OBDD(Ordered Binary Decision Diagram).Then we developed GFPCDA(Global Firewall Policy Conflict Detection Algorithm) algorithm to detect global conflict.In experiment,we evaluated the usability of our semantic model by eliminating the false positives and false negatives caused by incomplete policy semantic model,of a classical algorithm.We compared this algorithm with GFPCDA algorithm.The results show that GFPCDA detects conflicts more precisely and independently,and has better performance. | LIANG Xiaoyan XIA Chunhe JIAO Jian HU Junshun LI Xiaojian | 2014 | China Communications2014，11，5： | 2 |
| 5 | The analyticity of solutions to a class of degenerate elliptic equations显示文摘In the present paper,the analyticity of solutions to a class of degenerate elliptic equations is obtained.A kind of weighted norms are introduced and under such norms some degenerate elliptic operators are of weak coerciveness. | LI ChunHe School of Mathematical Science,University of Electronic Science and Technology of China,Chengdu 610054,China | 2010 | Science China Mathematics2010，53，8： | 2 |
| 6 | Chemical synthesis of coral-like nanowires and nanowire networks of conducting polypyrrole显示文摘 | HE Chang YANG Chunhe LI Yongfang | 2003 | Synthetic Metals2003，139，2： | 1 |
| 7 | Oestrogen modulates experimental autoimmune encephalomyelitis and interleukin-17 production via programmed death 1 显示文摘 | CHUNHE WANG DEHGHANI B YUEXIN LI | 2009 | Immunology2009，126，3： | 1 |
| 8 | Special fiber specialists 显示文摘 | LI Chunhe | 1994 | Textile Asia1994，25，7： | 1 |
| 9 | A Modified Spectrophotometeic Method for the Determination of Trace Amounts of Phemol in Water 显示文摘 | Kang Chunh Wang Ying Li Runbo | 2000 | Microchemical Journal2000，64，2： | 1 |
| 10 | Chemical synthesis of coral-like nanowires and nanowire networks of conducting polypyrrole显示文摘 | He Chang Yang Chunhe Li Yongfang | 2003 | Synthetic Metals2003，139，： | 1 |
| 11 | Improving the antistatic ability of poly- propylene fibers by inner antistatic agent fiUed with carbon nanotubes 显示文摘 | Chensha Li Tongxiang Liang Weizhe Lu Chunhe Tang Xiaoqing Hu Maosheng Cao Ji Liang | 2004 | Composites Science and Technology2004，，64： | 1 |
| 12 | Identification of conserved microRNAs and their target genes in tomato ( Lycopersicon esculentum )显示文摘 | Zujun Yin Chunhe Li Xiulan Han Fafu Shen | 2008 | Gene2008，，1： | 1 |
| 13 | Infinitesimal nonrigidity of convex surfaces with planar boundary显示文摘In the present paper infinitesimal nonrigidity of a class of convex surfaces with planar boundary is given. This result shows that if the image of the Gauss map of an evolution convex surface with planar boundary covers some hemisphere, this surface may be of infinitesimal nonrigidity for the isometric deformation of planar boundary. | LI Chunhe HONG Jiaxing | 2005 | Science China Mathematics2005，48，4： | 1 |
| 14 | Trust Type Based Trust Bootstrapping Model of Computer Network Collaborative Defense显示文摘In the system of Computer Network Collaborative Defense(CNCD),it is difficult to evaluate the trustworthiness of defense agents which are newly added to the system,since they lack historical interaction for trust evaluation.This will lead that the newly added agents could not get reasonable initial trustworthiness,and affect the whole process of trust evaluation.To solve this problem in CNCD,a trust type based trust bootstrapping model was introduced in this research.First,the division of trust type,trust utility and defense cost were discussed.Then the constraints of defense tasks were analyzed based on game theory.According to the constraints obtained,the trust type of defense agents was identified and the initial trustworthiness was assigned to defense agents.The simulated experiment shows that the methods proposed have lower failure rate of defense tasks and better adaptability in the respect of defense task execution. | YU Yang XIA Chunhe LI Shiying LI Zhong | 2015 | China Communications2015，12，12： | 1 |
| 15 | Performance of classic multiple factor analysis and model fitting in crop modeling显示文摘Multivariate statistical analysis and regression,which are typical methods for crop modeling,have direct influence on the accuracy of model,but the applications of these methods usually depend on experiences.In this research,the performances of some common methods of statistical analysis and regression model were compared and verified,in order to avoid the blindness in crop modeling.The monitoring data of growth environment and photosynthesis of tomato,pumpkin and cucumber were obtained by PTM-48A.For the object variable of CO2 exchange rate,selectivity on the main environmental factors by correlation analysis and path analysis were quantitatively compared.The performances of four kinds of multivariate binomial regression equations were compared using a comprehensive aggregative indicator,and the effectiveness of modeling was verified with the selected optimized multivariate statistical analysis and regression equation.Results showed that path analysis was more comprehensive and effective than correlation to discrimination of the variables,especially the path analysis ruled out some suspected independent variables which were not really independent,and the pure quadratic was more suitable to crop modeling because of its simple structure and high accuracy when the data set was small.The conclusion of this research has a general applicability,and offers a useful reference and guide for the other study and application of crops’modeling. | Jiang Zhaohui Zhang Jing Yang Chunhe Rao Yuan Li Shaowen | 2016 | International Journal of Agricultural and Biological Engineering2016，9，2： | 1 |
| 16 | A comparative study: surface characteristics of CVD - SiC ground with cast iron bond diamond wheel 显示文摘 | ZHANG Chunhe KATO Teruko LI Wei | 2000 | International Journal of Machine Tools & Manufacture2000，40，： | 1 |
| 17 | The addition of viologen in luminescent polymers for polymer light-emitting diodes显示文摘 | Yang Chunhe He Gufeng Wang Rongqiu Li Yongfang | 2000 | Thin Solid Films2000，363，： | 1 |
| 18 | Preparation of TiOjpolyurethane emulsions via in situ RAFT polymerization显示文摘 | Che Xiangchen Li Chunhe | 2010 | Progress in Organic Coatings2010，69，4： | 1 |
| 19 | Semantics-Based Compliance An a lys is o f N e two rk S e cu rity Policy Hie ra rch ie s显示文摘Network security policy and the automated refinement of its hierarchies aims to simplify the administration of security services in complex network environments. The semantic gap between the policy hierarchies reflects the validity of the policy hierarchies yielded by the automated policy refinement process. However, little attention has been paid to the evaluation of the compliance between the derived lower level policy and the higher level policy. We present an ontology based on Ontology Web Language (OWL) to describe the semantics of security policy and their implementation. We also propose a method of estimating the semantic similarity between a given higher level security policy and the lower level ones to evaluate the compliance for the policy refinement approach. The method is verified in the case study. The experimental results demonstrate that the proposed method evaluates the semantic similarity between policy and implementation accurately, and that the algorithm of concept similarity analysis reflects the subjective similarity judgment of policy and implementation more accurate than the other algorithms. | Yao Shan Xia Chunhe Hu Junshun Jiao Jian Li Xiaojian | 2012 | China Communications2012，9，7： | 1 |
| 20 | Synthesis and photovohaic characteristics of novel copolymers containing poly (phenylenevinylene) and triphenylamine moieties connected at 1,7 bay positions of perylene bisimide 显示文摘 | Liu Yang Yang Chunhe Li Yongjun | 2005 | Macromolecules2005，38，3： | 1 |
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