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Correlation between Surface Area Ratio of Medial to Lateral Tibial Plateau and Knee Alignment in Adults

Current Medical Science 2022年第3期42卷 577-583页

作者： Song gong Li-zhi HAN tian-lun gong Yi-hu YI Ruo-yu WANG Wei-hua XU Department of Orthopaedics Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China

Objective This study aimed to investigate the correlation between the surface area ratio of medial tibial plateau(MTP)to lateral tibial plateau(LTP)and the mechanical tibiofemoral angle(mTFA).Methods Lower limb computed tomography(CT)images were collected at our ***,the original CT data were analyzed and reconstructed using medical image processing *** proximal and distal centres of the femur and tibia were *** surface areas of MTP and LTP were identified using image processing *** Prism 8.0.2 was used to perform the statistical *** The surface area ratio of MTP to LTP was significantly correlated with the mTFA in all patients(P<0.0001),male group(P<0.0001),female group(P<0.0001),varus group(P<0.0001),and valgus group(P=0.002).Furthermore,the surface area of MTP and LTP was significantly greater in the male group than in the female group(P<0.0001).There was significant difference in the surface area of the MTP between the varus and valgus groups(P<0.0001).Significant difference was also observed in the surface area ratio of MTP to LTP between the varus and valgus groups(P<0.0001).Conclusion The surface area ratio of MTP to LTP was correlated with the *** a certain range,the smaller the mTFA,the greater the surface area ratio of MTP to *** patients undergoing total knee arthroplasty,of whom the surface area of the MTP was basically equal to that of the LTP,it is recommended that the osteotomy should be performed in accordance with mechanical alignment standards,and that a symmetrical tibial plateau prosthesis should be *** patients whose surface area of MTP is significantly greater than that of the LTP,it is recommended that the osteotomy should be performed in accordance with kinematic alignment standards,and that an anatomical tibial plateau prosthesis should be used.

关键词： knee alignment medial tibial plateau lateral tibial plateau surface area ratio prosthesis types total knee arthroplasty

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Evolutionary Generation Approach of Test Data for Multiple Paths Coverage of Message-passing Parallel Programs

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Chinese Journal of Electronics 2014年第2期23卷 291-296页

作者： tian tian gong Dunwei School of Information and Electrical Engineering China University of Mining and Technology

Test data generation, the premise of software testing, has attracted scholars in the software engineering community in recent years. Influenced by task partitioning, process scheduling, and network delays, parallel programs are executed in a non-deterministic way, which makes test data generation of parallel programs different from that of serial programs in essence. This paper investigated the problem of generating test data for multiple paths coverage of message-passing parallel programs. A mathematical model of the above problem was built based on each given path and its equivalent ones. It was solved by using a genetic algorithm to generate all desired data in one run. The proposed method was applied to five benchmark programs, and compared with the existing *** experimental results show that the proposed method greatly shortens the number of iterations and time consumption without reducing the coverage rate.

关键词： Software testing Parallel program Multiple paths Test data Genetic algorithm

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A Cryptographic Scheme Based on Spatiotemporal Chaos of Coupled Map Lattices

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Communications in Theoretical Physics 2006年第3期45卷 477-482页

作者： MA Hui CHEN tian-lun Institute of Physics Nankai University Tianjin 300071 China CCAST （World Laboratory） P.O. Box 8730 Beijing 100080 China

We propose a cryptographic scheme based on spatiotemporal chaos of coupled map lattices （CIVIL） ,which is based on one-time pad. The structure of the cryptosystem determines that the progress in decryption implies the progress in exploring the dynamical behavior of spatiotemporal chaos in CML. A part of the initial condition of CML is used as a secret key, and the recovery of the secret key by exhaustive search is impossible due to the sensitivity to the initial condition in spatiotemporal chaos system. Specially the software implementation of the scheme is easy.

关键词： spatiotemporal chaos coupled map lattices cryptography

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Complex Wave Solutions for (2+1)-Dimensional Modified Dispersive Water Wave System

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Communications in Theoretical Physics 2009年第7期52卷 17-22页

作者： LIANG Jin-Fu gong lun-Xun School of Physics and Electronic Science Guizhou Normal University Guiyang 550001 China

The extended Riccati mapping approach^[1] is further improved by generalized Riccati equation, and combine it with variable separation method, abundant new exact complex solutions for the （2＋1）-dimensional modified dispersive water-wave （MDWW） system are obtained. Based on a derived periodic solitary wave solution and a rational solution, we study a type of phenomenon of complex wave.

关键词： MDWW system generalized Riccati equation variable separation method complex wave

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Communication via Chaotic Synchronization Based on Contraction Maps

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Chinese Physics Letters 1996年第8期13卷 572-575页

作者： ZHOU Chang-song CHEN tian-lun Department of Physics Nankai UniversityTianjin 300071

A newly proposed method for constructing chaotically synchronizing systems is applied to *** independent information signals can be transmitted at the same time if the chaotic system is a multi-dimensional *** of the ... 详细信息

关键词： chaotic constructing method

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Damage Spreading in Neural Network with Local Connection and Cycle Stored Patterns

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Chinese Physics Letters 1996年第9期13卷 644-647页

作者： JI Dao-yun CHEN tian-lun Department of Physics Nankai UniversityTianjin 300071

The simulation results of damage spreading show the happening of dynamical chaotic-frozen phase transition in a one-dimensional system,a neural network with cycle stored patterns and local *** chaotic phase,the averag... 详细信息

关键词： behavior chaotic dynamical

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Higher-order Optimality Conditions and Duality for Approximate Solutions in Non-convex Set-valued Optimization

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Acta Mathematicae Applicatae Sinica 2019年第3期35卷 620-628页

作者： Guo-lin YU tian-tian gong North Minzu University

This paper deals with higher-order optimality conditions and duality theory for approximate solutions in vector optimization involving non-convex set-valued ***,under the assumption of near cone-subconvexlikeness for set-valued maps,the higher necessary and sufficient optimality conditions in terms of Studniarski derivatives are derived for local weak approximate minimizers of a set-valued optimization ***,applications to Mond-Weir type dual problem are presented.

关键词： studniarski derivatives optimality conditions set-valued optimization problem efficiency duality

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Some New Solitary Wave Solutions to a Compound KdV-Burgers Equation

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Communications in Theoretical Physics 2008年第7期50卷 51-52页

作者： gong lun-Xun PAN Jun-Ting School of Science Guizhou Normal University Guiyang 550001 China

Abstract In terms of the solutions of an auxiliary ordinary differential equation, a new algebraic method, which contains the terms of first-order derivative of functions f （ξ）, is constructed to explore the new solitary wave solutions for nonlinear evolution equations. The method is applied to a compound KdV-Burgers equation, and abundant new solitary wave solutions are obtained. The algorithm is also applicable to a large variety of nonlinear evolution equations.

关键词： traveling wave solutions compound KdV-Burgers equation solitary wave solution

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Complex Behavior in an Integrate-and-Fire Neuron Model Based on Small World Networks

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Communications in Theoretical Physics 2005年第2X期44卷 311-315页

作者： LIN Min CHEN tian-lun Department of Physics Nankai University Tianjin 300071 China

Based on our previously pulse-coupled integrate-and-fire neuron model in small world networks, we investigate the complex behavior of electroencephalographic (EEG)-like activities produced by such a model. We find EEG-like activities have obvious chaotic characteristics. We also analyze the complex behaviors of EEG-like signals,such as spectral analysis, reconstruction of the phase space, the correlation dimension, and so on.

关键词： self-organized criticality EEG-like waveform edge of chaos

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Some New Solutions of Jacobi Elliptic Functions to mBBM Equation

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Communications in Theoretical Physics 2007年第5X期48卷 787-790页

作者： gong lun-Xun PAN Jun-Ting School of Science Guizhou Normal University Guiyang 550001 China

The modified mapping method is further improved by the expanded expression of u（ξ） that contains the terms of the first-order derivative of function f（ξ）. Some new exact solutions to the mBBM equation are determined by means of the method. We can obtain many new solutions in terms of the Jacobi elliptic functions of the equation.

关键词： further improved modified mapping method traveling wave solutions Jacobi elliptic functions

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