|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Convergence of a smoothing algorithm for symmetric cone complementarity problems with a nonmonotone line search显示文摘In this paper, we propose a smoothing algorithm for solving the monotone symmetric cone complementarity problems (SCCP for short) with a nonmonotone line search. We show that the nonmonotone algorithm is globally convergent under an assumption that the solution set of the problem concerned is nonempty. Such an assumption is weaker than those given in most existing algorithms for solving optimization problems over symmetric cones. We also prove that the solution obtained by the algorithm is a maximally complementary solution to the monotone SCCP under some assumptions. | HUANG ZhengHai HU ShengLong HAN JiYe | 2009 | Science China Mathematics2009，52，4： | 12 |
| 2 | Path-following interior point algorithms for the Cartesian P_*(κ)-LCP over symmetric cones显示文摘In this paper, we establish a theoretical framework of path-following interior point al- gorithms for the linear complementarity problems over symmetric cones (SCLCP) with the Cartesian P*(κ)-property, a weaker condition than the monotonicity. Based on the Nesterov-Todd, xy and yx directions employed as commutative search directions for semidefinite programming, we extend the variants of the short-, semilong-, and long-step path-following algorithms for symmetric conic linear programming proposed by Schmieta and Alizadeh to the Cartesian P*(κ)-SCLCP, and particularly show the global convergence and the iteration complexities of the proposed algorithms. | LUO ZiYan XIU NaiHua | 2009 | Science China Mathematics2009，52，8： | 5 |
| 3 | ON THE MONOTONE CONVERGENCE OF THE PROJECTED ITERATION METHODS FOR LINEAR COMPLEMENTARITY PROBLEMS显示文摘Under suitable conditions,the monotone convergence about the projected iteration method for solving linear complementarity problem is proved and the influence of the involved parameter matrix on the convergence rate of this method is investigated. | 白中治 | 1996 | Numerical Mathematics A Journal of Chinese Universities(English Series)1996，5，2： | 3 |
| 4 | An Energy Efficient Motion Controller Based on SLCP for the Electrically Actuated Quadruped Robot显示文摘Energy efficiency has been the focus of quadruped robot research.Decreasing the energy loss caused by the DC motor can contribute to the walking efficiency of electrically actuated quadruped robots.Most works have focused on the quadruped mechanisms or actuations such as the Series Elastic Actuation(SEA).This work proposes a better efficient controller to perform the stable 5 m·s-1 movements of quadruped robots.The dynamic model of the electrically actuated leg is established by Lagrangian formulation.The energy efficiency of the DC motors in the electrically actuated quadruped robot is formulated as an optimization problem.The Stochastic Linear Complementarity Problem(SLCP)and sinusoidal pulse force are proposed to reduce the energy consumption at the contact.The Bemstein polynomials are used for planning a quasi-elliptic foot motion trajectory.The stability and energy efficiency of the proposed controller are verified with computer simulation and an actual single leg robot prototype.Compared with other works,the proposed controller performs the optimal Cost of Transport(COT). | Tianfa Li Lelai Zhou Yibin Li Hui Chai Kun Yang | 2020 | Journal of Bionic Engineering2020，17，2： | 3 |
| 5 | Trait complementarity between fine roots of Stipa purpurea and their associated arbuscular mycorrhizal fungi along a precipitation gradient in Tibetan alpine steppe显示文摘Development of fine roots and formation of symbiosis with arbuscular mycorrhizal(AM) fungi represent two strategies for plants to acquire nutrient and water from soil. Here, we elucidated how fine root development and symbolized mycorrhizal fungi with Stipa purpurea responded to the precipitation change in Tibetan alpine steppe ecosystem across a precipitation gradient from 50 mm to 400 mm. As precipitation increased, the proportion of thinner fine roots(diameter < 0.4 mm) in total roots increased significantly; while the mycorrhizal colonization percentage, either associated with thinner or thicker roots, decreased. This phenomenon indicated that fine root development and symbolized mycorrhizal fungi are likely alternative, and plant preferred to develop fine root rather than build a symbiotic relationship with mycorrhizal fungi in more benign niches with higher precipitation. Also, root diameter was negatively correlated with specific root length(SRL), but positively correlated with AM fungal colonization percentage, indicating thicker-root species rely more on mycorrhizal fungi in alpine steppe. The complementarity between fine root and mycorrhizal fungi of S. purpurea is mediated by precipitation in Tibetan alpine steppe. | ZHANG Jing WANG Ping XUE Ka HAO Yan-bin WANG Yan-fen CUI Xiao-yong | 2019 | Journal of Mountain Science2019，16，3： | 2 |
| 6 | Robust H∞ output tracking control of uncertain networked control systems显示文摘This paper investigates a problem of robust output tracking control of networked control systems(NCSs) with network-induced delays, packet dropouts, parameter uncertainties and external disturbances. Firstly, an augmented model of time-delay system is proposed for networked tracking control systems. Then, considering the piecewise differentiable characteristic of time-delay, the criterion to output tracking performance analysis and controller design are derived by using an approach of free weighting matrix, reciprocally convex and cone complementarity linearization(CCL). Finally, simulation results of numerical examples show the effectiveness of the proposed approach, and illustrate the advantages of the proposed criteria which outperform previous criteria in the literature. | 刘义才 Liu Bin | 2019 | High Technology Letters2019，25，3： | 2 |
| 7 | Inhibition of hepatitis C virus replication by single-stranded RNA structural mimics显示文摘AIM: To examine the effect of hepatitis C virus (HCV) structural mimics of regulatory regions of the genome on HCV replication.METHODS: HCV RNA structural mimics were constructed and tested in a HCV genotype 1b aBB7 replicon,and a Japanese fulminant hepatitis-1 (JFH-1) HCV genotype 2a infection model.All sequences were computer-predicted to adopt stem-loop structures identical to the corresponding elements in full-length viral RNA.Huh7.5 cells bearing the BB7 replicon or infected with JFH-1 virus were transfected with expression vectors generating HCV mimics and controls.Cellular HCV RNA and protein levels were quantified by real-time polymerase chain reaction and Western blotting,respectively.To evaluate possible antisense effects,complementary RNAs spanning a mimic were prepared.RESULTS: In the BB7 genotype 1b replicon system,mimics of the polymerase (NS-5B),X and BA regions inhibited replication by more than 90%,50%,and 60%,respectively.In the JFH-1 genotype 2 infection system,mimics that were only 74% and 46% identical in sequence relative to the corresponding region in JFH-1 inhibited HCV replication by 91.5% and 91.2%,respectively,as effectively as a mimic with complete identity to HCV genotype 2a.The inhibitory effects were confirmed by NS3 protein levels.Antisense RNA molecules spanning the 74% identical mimic had no significant effects.CONCLUSION: HCV RNA structural mimics can inhibit HCV RNA replication in replicon and infectious HCV systems and do so independent of close sequence identity with the target. | Robert Smolic Martina Smolic John H Andorfer Catherine H Wu Robert M Smith George Y Wu | 2010 | World Journal of Gastroenterology2010，16，17： | 2 |
| 8 | 集值B-H-S变分不等式及其应用显示文摘本文在Danach空间中,研究了集值B-H-S变分不等式问题和相补问题.将有限维空间、单值映象的若干结果改进并推广到无穷维空间.利用本文获得的结果.我们解决了无穷维空间中的鞍点问题和两类规划问题. | 张从军 | 1995 | 大学数学1995，16，4： | 2 |
| 9 | Estimations on upper and lower bounds of solutions to a class of tensor complementarity problems显示文摘We introduce a class of structured tensors, called generalized row strictly diagonally dominant tensors, and discuss some relationships between it and several classes of structured tensors, including nonnegative tensors, Btensors, and strictly copositive tensors. In particular, we give estimations on upper and lower bounds of solutions to the tensor complementarity problem (TCP) when the involved tensor is a generalized row strictly diagonally dominant tensor with all positive diagonal entries. The main advantage of the results obtained in this paper is that both bounds we obtained depend only on the tensor and constant vector involved in the TCP;and hence, they are very easy to calculate. | Yang XU Weizhe GU Zheng-Hai HUANG | 2019 | Frontiers of Mathematics in China2019，14，3： | 2 |
| 10 | AN ASYMPTOTICAL O((k + 1)n^3L) AFFINE SCALING ALGORITHM FOR THE P_*(k)-MATRIX LINEAR COMPLEMENTRITY PROBLEM显示文摘Based on the generalized Dikin-type direction proposed by Jansen et al in 1997, we give out in this paper a generalized Dikin-type affine scaling algorithm for solving the P*(k)-matrix linear complementarity problem (LCP). Form using high-order correctors technique and rank-one updating, the iteration complexity and the total computational turn out asymptotically O((K + 1) L) and O((K + 1)n3L) respectively. | Zhe-ming Wang Zheng-hai Huang Kun-ping Zhou | 2001 | Journal of Computational Mathematics2001，19，2： | 2 |
| 11 | Comparison and analysis of two Coulomb friction models on the dynamic behavior of slider-crank mechanism with a revolute clearance joint显示文摘The objective of this study is to investigate the effects of the Coulomb dry friction model versus the modified Coulomb friction model on the dynamic behavior of the slider-crank mechanism with a revolute clearance joint. The normal and tangential forces acting on the contact points between the journal and the bearing are described by using a Hertzian-based contact force model and the Coulomb friction models, respectively.The dynamic equations of the mechanism are derived based on the Lagrange equations of the first kind and the Baumgarte stabilization method. The frictional force is solved via the linear complementarity problem(LCP) algorithm and the trial-and-error algorithm.Finally, three numerical examples are given to show the influence of the two Coulomb friction models on the dynamic behavior of the mechanism. Numerical results show that due to the stick friction, the slider-crank mechanism may exhibit stick-slip motion and can balance at some special positions, while the mechanism with ideal joints cannot. | Xudong ZHENG Runsen ZHANG Qi WANG | 2018 | Applied Mathematics and Mechanics(English Edition)2018，39，9： | 2 |
| 12 | Structure and Property of AgLaY Alloy显示文摘The structure of RE-Ag alloy was observed and analyzed using electron probe. The property changes of the alloy containing two rare earth elements AgLaY during cold forming and the high temperature softening-resistance dur- ing annealing were studied using Vickers hardness tester. The distribution and action of the rare earth elements in Ag- alloy were also analyzed. Experimental results show that AgLaY alloy has more remarkable work-hardening effect than AgLa and pure silvet, and it also has better thermal-resistance. The effects of RE elements, La and Y, on the properties of Ag-alloy are attributable to their symbiotic distribution and complementary function. Because of the common proper- ties of La and Y as RE elements, they have the completely similar distribution in Ag-alloy. At the same time, La and Y make full use of complementary role in the alloy since they belong to different periods in periodic table and have differ- ences in atomic structure and properties. | Jinxia Li, Yongtao Liu, Zhenzhong Tai 1) The State Key Lab of Rolling and Automation, Northastern University, Shenyang 110004, China 2) Maerial & Metallurgical College, Northeastern University, Shenyang 110004, China 3) Shenyang ASTRON Mining Ltd. Corp., | 2001 | Rare Metals2001，20，3： | 2 |
| 13 | Projection and Contraction Methods for Nonlinear Complementarity Problem显示文摘We applied the projection and contraction method to nonlinear complementarity problem (NCP). Moveover,we proposed an inexact implicit method for (NCP) and proved the convergence. | Zhao She-feng, Fei Pu-sheng College of Mathematics and Computer Science,Wuhan University,Wuhan 430072,China | 2000 | Wuhan University Journal of Natural Sciences2000，5，4： | 2 |
| 14 | One-step quadratic convergence of noninterior continuation method for NCP显示文摘A noninterior continuation method is presented, with only the certering step used at each iteration, for nonlinear complementarity problem. It is shown that the algorithm is globally linearly and locally quadratically convergent under certain conditions. | XIU NaihuaDepartment of Mathematics , Northern Jiaotong University , Beijing 100044, China | 1999 | Chinese Science Bulletin1999，44，20： | 2 |
| 15 | PARALLEL CHAOTIC MULTISPLITTING ITERATIVE METHODS FOR THE LARGE SPARSE LINEAR COMPLEMENTARITY PROBLEM显示文摘A parallel chaotic multisplitting method for solving the large sparse linear complementarity problem is presented, and its convergence properties are discussed in detail when the system matrix is either symmetric or nonsymmetric. Moreover, some applicable relaxed variants of this parallel chaotic multisplitting method together with their convergence properties are investigated. Numerical results show that highly parallel efficiency can be achieved by these new parallel chaotic multisplitting methods. | Zhong-zhi Bai (State Key Laboratory of Scientific/Engineering Competing Institute of Computational Mathematics and Scientific/Engineering Computing, Academy of Mathematics and Systems Sciences, Chinese Academy of Sciences, Beijing 100080, China) | 2001 | Journal of Computational Mathematics2001，19，3： | 2 |
| 16 | Variational principle with nonlinear complementarity for three-dimensional contact problems and its numerical method显示文摘Variational principles with nonlinear complementarity and finite-dimensional nonlinear complementarity models for three-dimensional frictional contact problems are established.The existence and uniqueness of the solutions to the finite-dimensional models are proved.A minimum principle is developed and a minimization algorithm is presented.Numerical calculation shows that the algorithm is highly efficient,reliable and promising. | 陈万吉 陈国庆 冯恩民 | 1996 | Science China Mathematics1996，39，5： | 2 |
| 17 | Pollinator diversity benefits natural and agricultural ecosystems,environmental health,and human welfare显示文摘Biodiversity loss during the Anthropocene is a serious ecological challenge.Pollinators are important vectors that provide multiple essential ecosystem services but are declining rapidly in this changing world.However,several studies have argued that a high abundance of managed bee pollinators,such as honeybees(Apis mellifera),may be sufficient to provide pollination services for crop productivity,and sociological studies indicate that the majority of farmers worldwide do not recognize the contribution of wild pollinator diversity to agricultural yield.Here,we review the importance of pollinator diversity in natural and agricultural ecosystems that may be thwarted by the increase in abundance of managed pollinators such as honeybees.We also emphasize the additional roles diverse pollinator communities play in environmental safety,culture,and aesthetics.Research indicates that in natural ecosystems,pollinator diversity enhances pollination during environmental and climatic perturbations,thus alleviating pollen limitation.In agricultural ecosystems,pollinator diversity increases the quality and quantity of crop yield.Furthermore,studies indicate that many pollinator groups are useful in monitoring environmental pollution,aid in pest and disease control,and provide cultural and aesthetic value.During the uncertainties that may accompany rapid environmental changes in the Anthropocene,the conservation of pollinator diversity must expand beyond bee conservation.Similarly,the value of pollinator diversity maintenance extends beyond the provision of pollination services.Accordingly,conservation of pollinator diversity requires an interdisciplinary approach with contributions from environmentalists,taxonomists,and social scientists,including artists,who can shape opinions and behavior. | Daniel Mutavi Katumo Huan Liang Anne Christine Ochola Min Lv Qing-Feng Wang Chun-Feng Yang | 2022 | Plant Diversity2022，44，5： | 1 |
| 18 | 一类非线性互补问题的模系矩阵分裂Two-sweep方法显示文摘1引言机械工程中的障碍问题、力学中的接触问题、塑性定律问题,经济学中商品供应链,经济均衡问题等,都可以归为互补问题.因此,研究求解互补问题的有效算法很有意义。 | 李郴良 孙芳莉 黄杰彬 | 2019 | 高等学校计算数学学报2019，41，3： | 1 |
| 19 | A GLOBALLY DERIVTIVE-FREE DESCENT METHOD FOR NONLINEAR COMPLEMENTARITY PROBLEMS显示文摘Based on a class of functions, which generalize the squared Fischer-Burmeister NCP function and have many desirable properties as the latter function has, we reformulate nonlinear complementarity problem (NCP for short) as an equivalent unconstrained optimization problem, for which we propose a derivative-free de- scent method in monotone case. We show its global convergence under some mild conditions. If F, the function involved in NCP, is Ro-function, the optimization problem has bounded level sets. A local property of the merit function is discussed. Finally, we report some numerical results. | Hou-duo Qi (Institute of Computational Mathematics and Scientific/Engineering Computing, Academy of Mathematics and System Sciences, Chinese Academy of Sciences, Beijing, 100080, China) Yu-zhong Zhang (Institute of Operation Research, QuFu Normal Univer | 2000 | Journal of Computational Mathematics2000，18，3： | 1 |
| 20 | THE 4C APPROACH AS A WAY TO UNDERSTAND SPECIES INTERACTIONS DETERMINING INTERCROPPING PRODUCTIVITY显示文摘Modern agriculture needs to develop transition pathways toward agroecological,resilient and sustainable farming systems.One key pathway for such agroecological intensification is the diversification of cropping systems using intercropping and notably cereal-grain legume mixtures.Such mixtures or intercrops have the potential to increase and stabilize yields and improve cereal grain protein concentration in comparison to sole crops.Species mixtures are complex and the 4C approach is both a pedagogical and scientific way to represent the combination of four joint effects of Competition,Complementarity,Cooperation,and Compensation as processes or effects occurring simultaneously and dynamically between species over the whole cropping cycle.Competition is when plants have fairly similar requirements for abiotic resources in space and time,the result of all processes that occur when one species has a greater ability to use limiting resources(e.g.,nutrients,water,space,light)than others.Complementarity is when plants grown together have different requirements for abiotic resources in space,time or form.Cooperation is when the modification of the environment by one species is beneficial to the other(s).Compensation is when the failure of one species is compensated by the other(s)because they differ in their sensitivity to abiotic stress.The 4C approach allows to assess the performance of arable intercropping versus classical sole cropping through understanding the use of abiotic resources. | Eric JUSTES Laurent BEDOUSSAC Christos DORDAS Ela FRAK Gaetan LOUARN Simon BOUDSOCQ Etienne-Pascal JOURNET Anastasios LITHOURGIDIS Chrysanthi PANKOU Chaochun ZHANG Georg CARLSSON Erik Steen JENSEN Christine WATSON Long LI | 2021 | Frontiers of Agricultural Science and Engineering2021，8，3： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员