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36篇 您的检索式:作者名="Luo Xinping"
    题名 作者 年代 出处 被引量
1Leader-following consensus protocols for formation control of multi-agent network显示文摘Two protocols are presented,which can make agents reach consensus while achieving and preserving the desired formation in fixed topology with and without communication timedelay for multi-agent network.First,the protocol without considering the communication time-delay is presented,and by using Lyapunov stability theory,the sufficient condition of stability for this multi-agent system is presented.Further,considering the communication time-delay,the effectiveness of the protocol based on Lyapunov-Krasovskii function is demonstrated.The main contribution of the proposed protocols is that,as well as the velocity consensus is considered,the formation control is concerned for multi-agent systems described as the second-order equations.Finally,numerical examples are presented to illustrate the effectiveness of the proposed protocols.Xiaoyuan Luo Nani Han Xinping Guan 2011Journal of Systems Engineering and Electronics2011,22,6:10
2Purification and Characterization of a Mannose-binding Lectin from the Rhizomes of Aspidistra elatior Blume with Antiproliferative Activity显示文摘有一个新奇 N 终端氨基酸序列的凝集素被硫酸铵降水,离子交换层析 ondiethylaminoethyl-Sepharose 和 carboxymethyl-Sepharose 和凝胶过滤层析 onSephacryl S-100 从蜘蛛抱蛋 elatior 布鲁坶的根茎净化。A。elatior 布鲁坶凝集素(AEL ) 是有 56kDa 的一个分子的团的 heterotetramer 并且一起由 13.5 kDa 和 14.5 kDaheld 的二不同多肽组成由的二 homodimers 创作非共有原子价相互作用。Hapten 抑制试金显示向兔子红血球的 AEL 的那项 hemagglutinating 活动能被 D 甘露糖禁止,甘露聚糖, thyroglobulinand ovomucoid。凝集素是稳定的直到 70 ° C,并且在 7.0-8.0 的一个狭窄的 pH 范围显示出最大的活动。化学修正和光谱分析显示色氨酸,精氨酸,半胱氨酸和 carboxyl 组织残余为它的 hemagglutinating 活动是必要的。然而,他们可能不在活跃中心是在场的,除了一些 carboxyl 组残余。AEL 也出现了在向 Bre-04 (66%) 的 antiproliferative 活动, Lu-04 (60%) 和人的癌症房间的 HepG2 (56%) 衬里的 vitro 重要。Xiaochao XU Chuanfang WU Chao LIU Yongting LUO Jian LI Xinping ZHAO Els Van DAMME Jinku BAO 2007Acta Biochimica et Biophysica Sinica2007,39,7:8
3Effect of warm rolling process on microstructures and tensile properties of 10 Mn steel显示文摘The influence of warm rolling processes on the microstructures and tensile properties of 100 Mn steel was studied.Strength appeared to increase with the rolling temperature but strengthening mechanisms varied.The increase of warm rolling temperature from 250℃ to 600℃ leads to enhanced recrystallization in martensite during the intercritical annealing(IA) at 620℃ for 5 h.As a result,both ultimate tensile strength(UTS) and total elongation(TE) increase.However,the size of relatively coarse recrystallized austenite grains and the resultant yield strength(YS) remain almost constant in this temperature range.The further increase of rolling temperature to 700-800℃ causes a considerable amount of pearlite to be formed during the IA,and then martensite is formed after the IA,resulting in dramatical increases in both YS and UTS but at the great loss of ductility.The warm rolling at 600℃ with 63% thickness reduction can produce the steel with the best mechanical combination of 1.2 GPa UTS and 35% TE,due to the formation of many ultrafine austenite grains and strain-induced cementite precipitates.This demonstrates that the mechanical combination of non-V-alloyed medium Mn steel can be improved to an equivalent level of 0.7% V alloyed 10 Mn steel just via the economic strain-induced cementite precipitation.Bin Hu Xin Tu Haiwen Luo Xinping Mao 2020Journal of Materials Science & Technology2020,47,12:6
4Matrix porosity calculation in volcanic and dolomite reservoirs and its application显示文摘矩阵孔计算断裂并且 vuggy 水库例如 volcanics 和捱过的白云石,是着急地需要在记载得好的评估解决的问题之一。在这篇论文,我们首先比较为从有矩阵孔公式的完整的直径流纹岩核心实验的孔计算的一个实验公式通常使用了。我们讨论实验公式的适用性在断裂并且 vuggy 水库,例如中介基本的 volcanics 和捱过的白云石。基于核心分析数据,我们的实验公式的计算的孔的错误分发和在这些水库的公式被给的另外的孔。统计错误分析显示我们的实验公式比另外的孔公式提供更高的精确。当孔在 1.5% 和 15% 之间时,声学的实验公式能不仅为酸的 volcanics 而且在折断的其它和 vuggy 水库被使用,例如中介基本的 volcanics 并且捱过白云石。而且,公式能在孔计算上减少地上凿穿增大和岩石改变的效果。Li Ning Wu Hongliang Feng Qingfu Wang Kewen Shi Yujiang Li Qingfeng Luo Xinping 2009Applied Geophysics2009,6,3:6
5Privacy Preserving Solution for the Asynchronous Localization of Underwater Sensor Networks显示文摘Location estimation of underwater sensor networks(USNs)has become a critical technology,due to its fundamental role in the sensing,communication and control of ocean volume.However,the asynchronous clock,security attack and mobility characteristics of underwater environment make localization much more challenging as compared with terrestrial sensor networks.This paper is concerned with a privacy-preserving asynchronous localization issue for USNs.Particularly,a hybrid network architecture that includes surface buoys,anchor nodes,active sensor nodes and ordinary sensor nodes is constructed.Then,an asynchronous localization protocol is provided,through which two privacy-preserving localization algorithms are designed to estimate the locations of active and ordinary sensor nodes.It is worth mentioning that,the proposed localization algorithms reveal disguised positions to the network,while they do not adopt any homomorphic encryption technique.More importantly,they can eliminate the effect of asynchronous clock,i.e.,clock skew and offset.The performance analyses for the privacy-preserving asynchronous localization algorithms are also presented.Finally,simulation and experiment results reveal that the proposed localization approach can avoid the leakage of position information,while the location accuracy can be significantly enhanced as compared with the other works.Haiyan Zhao Jing Yan Xiaoyuan Luo Xinping Guan 2020IEEE/CAA Journal of Automatica Sinica2020,7,6:6
6Formation and obstacle avoidance control for multiagent systems显示文摘This paper considers the problems of formation and obstacle avoidance for multiagent systems.The objective is to design a term of agents that can reach a desired formation while avoiding collision with obstacles.To reduce the amount of information interaction between agents and target,we adopt the leader-follower formation strategy.By using the receding horizon control (RHC),an optimal problem is formulated in terms of cost minimization under constraints.Information on obstacles is incorporated online as sensed in a limited sensing range.The communication requirements between agents are that the followers should obtain the previous optimal control trajectory of the leader to each update time.The stability is guaranteed by adding a terminal-state penalty to the cost function and a terminal-state region to optimal problem.Finally,simulation studies are provided to verify the effectiveness of the proposed approach.Yan, Jing Guan, Xinping Luo, Xiaoyuan Tan, Fuxiao 2011控制理论与应用(英文版)2011,9,2:4
7Sliding Mode Formation Control of Nonlinear Multi-Agent Systems with Local Lipschitz Continuous Dynamics显示文摘In this paper, the multi-agent formation problem of networked nonlinear multi-agent systems with local Lipschitz continuous dynamics under directed interaction topology, is investigated. Based on the nonlinear dynamics satisfying locally Lipschitz continuous conditions, three kinds of sliding mode controllers are proposed to solve the problem of multi-agent formation control. Using integral sliding mode controller in first-order system, formation shape is achieved within finite time. For second-order system, on the one hand, non-singular terminal sliding mode function is adopted to accomplish the system asymptotic convergence. Furthermore, super-twisting algorithm is proposed to make multi-agent achieve the desired formation within finite time. Lyapunov functions are applied in the whole paper to ensure the system stability. Numerical simulation examples are provided to demonstrate the effectiveness of the proposed sliding mode control methods.WANG Jinran LUO Xiaoyuan LI Xiaolei ZHU Minggao GUAN Xinping 2019Journal of Systems Science & Complexity2019,32,3:3
8Output Consensus for Heterogeneous Nonlinear Multi-Agent Systems Based on T-S Fuzzy Model显示文摘In this paper, the output consensus problem of general heterogeneous nonlinear multi-agent systems subject to different disturbances is considered. A kind of Takagi-Sukeno fuzzy modeling method is used to describe the nonlinear agents' dynamics. Based on the model, a distributed fuzzy observer and controller are designed based on parallel distributed compensation scheme and internal reference models such that the heterogeneous nonlinear multi-agent systems can achieve output consensus. Then a necessary and sufficient condition is presented for the output consensus problem. And it is shown that the consensus trajectory of the global fuzzy model is determined by the network topology and the initial states of the internal reference models. Finally, some simulations are given to illustrate and verify the effectiveness of the proposed scheme.LI Xiaolei LUO Xiaoyuan LI Shaobao GUAN Xinping 2017Journal of Systems Science & Complexity2017,30,5:3
9Generalized Parallel Coprime Array for Two-Dimensional DOA Estimation:A Perspective from Maximizing Degree of Freedom显示文摘Parallel arrays with coprime subarrays have shown its potential advantages for two dimensional direction of arrival(DOA)estimation.In this paper,by introducing two flexible coprime factors to enlarge the inter-element spacing of parallel uniform subarrays,we propose a generalized parallel coprime array(GPCA)geometry.The proposed geometry enjoys flexible array layouts by the coprime factors and enables to extend the array aperture to achieve great improvement of estimation performance.Meanwhile,we verify that GPCA always can obtain M2 degrees of freedom(DOFs)in co-array domain via 2M sensors after optimization,which outperforms sparse parallel array geometries,such as parallel coprime array(PCA)and parallel augmented coprime array(PACA),and is the same as parallel nested array(PNA)with extended aperture.The superiority of GPCA geometry has been proved by numerical simulations with sparse representation methods.Luo Chen Xinping Lin Beizuo Zhu Xiaofei Zhang 2021China Communications2021,18,4:3
10Highly efficient and stable solar-powered desalination by tungsten carbide nanoarray film with sandwich wettability显示文摘Solar-powered desalination is a promising way to resolve the worldwide water crisis for its low con- sumption and simple facility. Considering the fragility and aggregations of traditional materials, which may decrease efficiency, we herein introduce a robust tungsten carbide (WC) nanoarray film as a stable and efficient photothermal material, whose absorption is over 97.5% throughout almost the whole solar spectrum range (220–2200 nm) due to nanoarray structure and thus enhanced localized surface plasmon resonance. Besides, for the first time, we modified the film with sandwich wettability. It accelerates evap- oration by reducing water’s reflection of light, enlarging hydrophobic-hydrophilic boundaries, and depressing heat dissipation. Combining high absorption with unique wettability, the WC nanoarray film offers high solar-to-vapor efficiency of 90.8% and produces drinking water at the rate of (1.06 ± 0.10) kg m^(-2)h^(-1)from man-made seawater and (0.98 ± 0.18) kg m^(-2)h^(-1)from heavy metal sewage under one sun (AM 1.5) while 98% performance remains after 1 h×100 times’ reutilization.Nana Han Kai Liu Xinping Zhang Meng Wang Pan Du Zhaohui Huang Daojin Zhou Qian Zhang Tengfei Gao Yin Jia Liang Luo Jianjun Wang Xiaoming Sun 2019Science Bulletin2019,64,6:2
11Seawater hydraulics:From the sea surface to depths of 11000 meters显示文摘Using seawater as the working medium,the seawater hydraulic system has significant advantages in the deep sea,such as eliminating contamination caused by oil leaks,no oil tanks,and the ability to automatically adapt to sea depths.As working depths increase,seawater hydraulic technology faces enormous challenges.First,the physical and chemical properties of seawater,such as density,temperature,and composition,change significantly.Second,hydraulic components are subject to an environmental pressure of up to 110 MPa,which causes serious deformation or even seizure of moving pairs and significantly affects the efficiency of hydraulic components.The friction and wear characteristics between the moving pairs also significantly change with the change in sea depth,therefore developing the matching material according to depth is necessary.Finally,the cavitation characteristic of a valve port is obviously different from that on land,so special material and structure should be used to improve the service life of the valve port.These factors severely restrict the improvement of the working depths and characteristics of seawater hydraulic components.This article focuses on the abovementioned problems and provides solutions for deep-sea seawater hydraulic technology.LIU YinShui CHENG Qian WANG ZhenYao PANG Hao DENG YiPan ZHOU XinPing LUO XiaoHui CUI Yan WU DeFa 2022Science China(Technological Sciences)2022,65,9:2
12SUSTAINABLE SUGARCANE CROPPING IN CHINA显示文摘Demand for sugar is projected to grow in China for the foreseeable future.However,sugarcane production is unlikely to increase due to increasing production cost and decreasing profit margin.The persisting sugarcane yield plateau and the current cropping system with fertilizer overuse,soil acidification and pests and diseases remain the major productivity constraints.Sugarcane agriculture supports the livelihood of about 28 million farmers in South China;hence,sustaining it is a socioeconomic imperative.More compellingly,to meet the ever-increasing Chinese market demand,annual sugar production must be increased from the current 10 Mt to 16 Mt by 2030 of which 80% to 90% comes from sugarcane.Therefore,increasing sugar yield and crop productivity in an environmentally sustainable way must be a priority.This review examines the current Chinese sugarcane production system and discuss options for its transition to a green,sustainable cropping system,which is vital for the long-term viability of the industry.This analysis shows that reducing chemical inputs,preventing soil degradation,improving soil health,managing water deficit,provision of clean planting material,and consolidation of small farm holdings are critical requirements to transform the current farming practices into an economically and environmentally sustainable sugarcane cropping system.Ting LUO Prakash LAKSHMANAN Zhongfeng ZHOU Yuchi DENG Yan DENG Linsheng YANG Dongliang HUANG Xiupeng SONG Xihui LIU Wen-Feng CONG Jianming WU Xinping CHEN Fusuo ZHANG 2022Frontiers of Agricultural Science and Engineering2022,9,2:1
13Communication-Aware Formation Control of AUVs With Model Uncertainty and Fading Channel via Integral Reinforcement Learning显示文摘Most formation approaches of autonomous underwater vehicles(AUVs)focus on the control techniques,ignoring the influence of underwater channel.This paper is concerned with a communication-aware formation issue for AUVs,subject to model uncertainty and fading channel.An integral reinforcement learning(IRL)based estimator is designed to calculate the probabilistic channel parameters,wherein the multivariate probabilistic collocation method with orthogonal fractional factorial design(M-PCM-OFFD)is employed to evaluate the uncertain channel measurements.With the estimated signal-to-noise ratio(SNR),we employ the IRL and M-PCM-OFFD to develop a saturated formation controller for AUVs,dealing with uncertain dynamics and current parameters.For the proposed formation approach,an integrated optimization solution is presented to make a balance between formation stability and communication efficiency.Main innovations lie in three aspects:1)Construct an integrated communication and control optimization framework;2)Design an IRL-based channel prediction estimator;3)Develop an IRL-based formation controller with M-PCM-OFFD.Finally,simulation results show that the formation approach can avoid local optimum estimation,improve the channel efficiency,and relax the dependence of AUV model parameters.Wenqiang Cao Jing Yan Xian Yang Xiaoyuan Luo Xinping Guan 2023IEEE/CAA Journal of Automatica Sinica2023,10,1:1
14Response of nitrous oxide emission to soil mulching and nitrogen fertilization in semi-arid farmland显示文摘Jianliang Liu Lin Zhu Shasha Luo Lingduo Bu Xinping Chen Shanchao Yue Shiqing Li 2014Agriculture, Ecosystems and Environment2014,,:1
15Advances in research of land surface evapotranspiration at home and abroad显示文摘Land surface evapotranspiration (ET) is an important part of the hydrologic cycle and energy balances.With the development of remote sensing technology,research on monitoring and estimating of evapotranspiration has made important progress.This paper summarizes advances in measuring and estimating regional evapotranspiration at home and abroad based on traditional methods and remote sensing.This summary includes such methods as Bowen,Gradient,Penman-Monteith,Water Balance,Eddy Correlation,SPAC,Energy Balance and Remote Sensing.Also,the evapotranspiration achievements in the Heihe River Basin are also discussed.Finally,the existing problems in regional evapotranspiration research and future development prospects are also discussed at the conclusion of this paper.XinPing Luo KeLi Wang Hao Jiang Jia Sun JuanJuan Xu QingLiang Zhu ZhaoGuo Li 2010Research in Cold and Arid Regions2010,2,2:1
16Rigid graph-based three-dimension localization algorithm for wireless sensor networks显示文摘This paper investigates the node localization problem for wireless sensor networks in three-dimension space. A distributed localization algorithm is presented based on the rigid graph. Before location, the communication radius is adaptively increasing to add the localizability. The localization process includes three steps: firstly, divide the whole globally rigid graph into several small rigid blocks; secondly, set up the local coordinate systems and transform them to global coordinate system; finally, use the quadrilateration iteration technology to locate the nodes in the wireless sensor network. This algorithm has the advantages of low energy consumption, low computational complexity as well as high expandability and high localizability. Moreover, it can achieve the unique and accurate localization. Finally, some simulations are provided to demonstrate the effectiveness of the proposed algorithm.LUO Xiaoyuan ZHONG Wenjing LI Xiaolei GUAN Xinping 2018Journal of Systems Engineering and Electronics2018,29,5:1
17Delay-dependent exponential stability criteria for stochastic systems with polytopic-type uncertainties显示文摘This paper considers the problem of delay-dependent exponential stability in mean square for stochastic systems with polytopic-type uncertainties and time-varying delay. Applying the descriptor model transformation and introducing free weighting matrices, a new type of Lyapunov-Krasovskii functional is constructed based on linear matrix inequalities (LMIs), and some new delay-dependent criteria are obtained. These criteria include the delay-independent/rate-dependent and delay-dependent/rate-independent exponential stability criteria. These new criteria are less conservative than existing ones. Numerical examples demonstrate that these new criteria are effective and are an improvement over existing ones.Yumei LI Xinping GUAN Dan PENG Changchun HUA Xiaoyuan LUO 2009控制理论与应用(英文版)2009,7,3:1
18On properties of smoothing operator in greymodel显示文摘Mao Shuhua Xiao Xinping Luo Yuan Zhang Jinjin 2007The Journal of Gray System2007,1,:1
19Epidermal Growth Factor Receptor: A Novel Target of the Wnt/β-Catenin Pathway in Liver显示文摘Xinping Tan Udayan Apte Amanda Micsenyi Emorphia Kotsagrelos Jian-Hua Luo Sarangarajan Ranganathan Dulabh K. Monga Aaron Bell George K. Michalopoulos Satdarshan P.S. Monga 2005Gastroenterology2005,,1:1
20Consensus of second-order nonlinear multi-agent systems via sliding mode observer and controller显示文摘This paper investigates the consensus problem of second-order nonlinear multi-agent systems(MASs) via the sliding mode control(SMC) approach. The velocity of each agent is assumed to be unmeasurable. A second-order sliding mode observer is designed to estimate the velocity. Then a distributed discontinuous control law based on first-order SMC is presented to solve the consensus problem. Moreover, to overcome the chatting problem, two controllers based on the boundary layer method and the super-twisting algorithm respectively are presented. It is shown that the MASs will achieve consensus under some given conditions. Some examples are provided to demonstrate the effectiveness of the proposed control laws.Xiaolei Li Xiaoyuan Luo Shaobao Li Jianjin Li Xinping Guan 2017Journal of Systems Engineering and Electronics2017,28,4:1
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