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Kahler Metrics on the Projective Bundle of a Holomorphic Finsler Vector Bundle

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Acta Mathematica Sinica,English Series 2020年第11期36卷 1279-1291页

作者： Kun WANG chun ping ZHONG School of Mathematical Sciences Xiamen UniversityXiamen 361005P.R.China

Let(M,g)be a compact Kihler manifold and(E,F)be a holomorphic Finsler vector bundle of rank r≥2 over *** this paper,we prove that there exists a Kahler metricФdefined on the projective bundle P(E)of E,which comes naturally from g and ***,a necessary and sufficient condition forФhaving positive scalar curvature is obtained,and a sufficient condition forФhaving positive Ricci curvature is established.

关键词： Finsler vector bundle Kahler metric scalar curvature Ricci curvature

Relationship Among Solutions of a Generalized Riccati Equation

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Communications in Theoretical Physics 2007年第4X期48卷 610-614页

作者： LIU Xiao-ping LIU chun-ping Institute of Mathematics Yangzhou University Yangzhou 225002 China Gaoyou Branch Yangzhou Education College Gaoyou 225600 China

In this paper, some solutions of a generalized Riccati equation are investigated, which are given in the recent articles [Chaos, Solitons ＆ Fractals 24 （2005） 257; Phys. Lett. A 336 （2005） 463], and the relations... 详细信息

关键词： generalized Riccati equation nonlinear partial differential equations exact solution

Comment on “Symbolic Computation and q-Deformed Function Solutions of the (2+1)-Dimensional Breaking Soliton Equation”

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Communications in Theoretical Physics 2008年第3期49卷 571-574页

作者： LIU Xiao-ping LIU chun-ping Institute of Mathematics Yangzhou University Yangzhou 225002 China Gaoyou Branch Yangzhou College of Education Gaoyou 225600 China

In a recent article [Commun. Theor. Phys. （Beijing, China） 47 （2007） 270], Cao et al. gave some nontrivial solutions of a Riccati equation by using symbolic and algebra computation. They took these solutions, which are in the form of q-deformed hyperbolic and triangular functions as new solutions. In this comment, we will show that these solutions are just the special cases of some known solutions of the Riccati equation and thus they are not new solutions.

关键词： symbolic computation Riccati equation q-deformed hyperbolic functions

A Note on the Transformation of Variables of KP Equation, Cylindrical KP Equation and Spherical KP Equation

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Communications in Theoretical Physics 2019年第2期71卷 170-174页

作者： chun-ping Liu Institute of Mathematics Yangzhou UniversityYangzhou 225002China

In a recent article(Commun. Theor. Phys. 67(2017) 207), three(2+1)-dimensional equations — KP equation, cylindrical KP equation and spherical KP equation, have been reduced to the same Kd V equation by using different transformation of variables, respectively. In this short note, by adding an adjustment item to original transformation, three more general transformation of variables corresponding to above three equations have been *** the solutions of the Kd V equation into our transformation of variables, more new exact solutions of the three(2+1)-dimensional equations can be obtained.

关键词： transformation of variables KP equation cylindrical KP equation spherical KP equation

Ultrahigh performance concrete–properties, applications and perspectives

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Science China(Technological Sciences) 2015年第4期58卷 587-599页

作者： GU chun ping YE Guang SUN Wei School of Materials Science & Engineering Southeast University Microlab Faculty of Civil Engineering and Geosciences Delft University of Technology Jiangsu Key Laboratory of Construction Materials Collaborative Innovation Center for Advanced Civil Engineering Materials

Over the last twenty years,remarkable advances have taken place in the research and application of ultra-high performance concrete(UHPC),which exhibits outstanding mechanical properties and excellent *** has shown great potential for the next generation infrastructure construction from the sustainability point of *** paper will give an overview on UHPC,with particular focus on the properties,applications and *** several decades of development,several types of commercial UHPC materials are available in the market,and the properties of UHPC have been characterized by numerous experimental and field *** speaking,the performance(*** properties and durability)of UHPC is much better than normal concrete(NC)and high performance concrete(HPC).Therefore,the uses of UHPC are growing all over the world,in both fields of new construction and ***,it is still a special material and technology,which is not worldwide *** some application prospects of UHPC are briefly introduced in the paper,and the efforts,which have to be made to turn UHPC into a widespread‘regular’technology,are *** paper aims to help designers,engineers,architects and infrastructure owners to know the capacities of UHPC and thus to increase the applications of this material.

关键词： UHPC characteristics durability applications perspectives

Arbitrary-oriented target detection in large scene sar images

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Defence Technology（防务技术） 2020年第4期16卷 933-946页

作者： Zi-shuo Han chun-ping Wang Qiang Fu Shijiazhuang Campus Army Engineering UniversityShijiazhuang050003China

Target detection in the field of synthetic aperture radar(SAR) has attracted considerable attention of researchers in national defense technology worldwide,owing to its unique advantages like high resolution and large scene image acquisition capabilities of ***,due to strong speckle noise and low signal-to-noise ratio,it is difficult to extract representative features of target from SAR images,which greatly inhibits the effectiveness of traditional *** order to address the above problems,a framework called contextual rotation region-based convolutional neural network(RCNN) with multilayer fusion is proposed in this ***,aimed to enable RCNN to perform target detection in large scene SAR images efficiently,maximum sliding strategy is applied to crop the large scene image into a series of sub-images before *** of using the highest-layer output for proposal generation and target detection,fusion feature maps with high resolution and rich semantic information are constructed by multilayer fusion ***,we put forwards rotation anchors to predict the minimum circumscribed rectangle of targets to reduce redundant detection ***,shadow areas serve as contextual features to provide extraneous information for the detector identify and locate targets *** results on the simulated large scene SAR image dataset show that the proposed method achieves a satisfactory performance in large scene SAR target detection.

关键词： Target detection Convolutional neural network Multilayer fusion Context information Synthetic aperture radar

Analytical modeling for colloid-facilitated transport of N-member radionuclides chains in the fractured rock

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Nuclear Science and Techniques 2007年第6期18卷 336-343页

作者： TIEN Neng-Chuan JEN chun-ping Energy and Environment Research Laboratories Industrial Technology Research Institute Hsinchu 310 Taiwan Department of Mechanical Engineering National Chung Cheng University Chia Yi 62102 Taiwan

A precious analytical model for N-member radionuclide decay chains has been extended to include the ef- fect of radionuclide sorption with groundwater *** distribution coefficients were employed in the nu- clide decay chain to illustrate the present *** colloid concentration was assumed constant in time and space owing to equilibrium between colloid generation and sedimentation by chemical and/or physical ***- thermore,the diffusion of colloids into the rock matrix was ignored because the diameter of colloid is relatively large and colloids and fracture surfaces are *** results indicated that colloids could facilitate the transport of radionuclides and the large adsorbability of nuclides with colloids enlarged the effect of acceleration by *** influence of colloids on the radionuclide transport was expected to be crucial to the actinides with large adsorbability; however,the present results revealed that the low-adsorbing nuclides whose parent nuclides have large capability of sorption could be also facilitated significantly by colloids ***,the role of colloids played in the transport of the radionuclides decay chain should be assessed carefully in the radioactive waste *** analyti- cal method presented herein is helpful to verify/validate further complex far-field models.

关键词：分析模型放射性核素氮元素同位素

Colloid-facilitated effects on migration of radionuclides in fractured rock with a kinetic solubility-limited dissolution model

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Nuclear Science and Techniques 2010年第6期21卷 339-346页

作者： Jen, chun-ping Tien, Neng-chuan chung Cheng Univ Dept Mech Engn Taipei 62102 Taiwan Ind Technol Res Inst Energy & Environm Res Labs Hsinchu 31040 Taiwan

Nuclides can move with groundwater either as solutes or colloids,where the latter mechanism generally results in much shorter traveling time as the nuclides interact strongly with solid phases,such as *** the performance assessment,it is therefore essential to assess the relative importance of these two transport mechanisms for different *** relative importance of colloids depends on the nature and concentration of the colloids in ***(Pu),neptunium(Np),uranium(U) and americium(Am) are four nuclides of concern for the long-term emplacement of nuclear wastes at potential repository *** four actinides have a high potential for migrating if attached to iron oxide,clay or silica colloids in the *** sorption of the actinides by colloids in the groundwater may facilitate the transport of these nuclides along potential flow *** solubility-limited dissolution model can be used to assess the safety of the release of nuclear waste in geological disposal ***,it has been assumed that the solubility of the waste form is *** a nuclide reaches its solubility limit at an inner location near the waste form,it is unlikely that the same nuclide will reach its solubility limit at an outer location unless this nuclide has a parent *** is unlikely that the daughter nuclides will exceed their solubility limit due to decay of their parent *** present study investigates the effect of colloids on the transport of solubility-limited nuclides under the kinetic solubility-limited dissolution(KSLD) boundary condition in fractured *** release rate of the nuclides is proportional to the difference between the saturation concentration and the inlet aqueous concentration of the *** presence of colloids decreases the aqueous concentration of nuclides and,thus,increases the release flux of nuclides from the waste form.

关键词：核素迁移胶体浓度溶解度动力学裂隙岩体模型地下水溶质锕系元素

High spectrum efficiency channel encoding method

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The Journal of China Universities of Posts and Telecommunications 2009年第3期16卷 30-32,44页

作者： YANG chun-ping LI Dao-ben School of Electrical and Electronic Engineering North China Electric Power University Beijing 102208 China School of Information Engineering Beijing University of Posts and Telecommunications Beijing 100876 China

A novel high spectrum efficiency channel encoding method called overlapped code division multiplexing （OvCDM） is presented. It is a convolutional encoding method with code rate greater than 1. Compared with traditional coded modulation （CM） technologies, OvCDM emphasizes the constrain relation between encoded codes. It is actually a blind modulation. The simulation results in the additive white Gaussian noise （AWGN） channel indicate that OvCDM can significantly improve spectrum efficiency of mobile communications systems. Meanwhile, the proposed OvCDM can ensure high decoding performance.

关键词： spectrum efficiency convolutional encoding code rate AWGN OvCDM