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《金史》女真人名释例 被引量:2
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作者 孙伯君 《满语研究》 2002年第2期92-96,共5页
《金史》汉字音译女真人名中蕴含了动词使令式、过去终止形、同动态等女真语语法信息 ,本文借助于金代碑铭资料、《女真译语》及满语与所搜集相关人名的比较 ,确认了《金史》中一些女真人名的具体含义。
关键词 《金史》 女真人名 女真语 动词使令式 过去终止形 动词同动态
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人体绘画艺术之我见 被引量:2
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作者 季相玉 《临沂师专学报》 1994年第2期57-58,61,共3页
人体绘画艺术之我见季相玉20世纪80至90年代,是我们伟大祖国两个文明建设的腾飞时代.也是我们中华民族文化、美育素质迅速提高的时代。在改革开放新的历史时期,人体艺术和人体绘画等造型艺术也得到了蓬勃发展.一大批优秀作品... 人体绘画艺术之我见季相玉20世纪80至90年代,是我们伟大祖国两个文明建设的腾飞时代.也是我们中华民族文化、美育素质迅速提高的时代。在改革开放新的历史时期,人体艺术和人体绘画等造型艺术也得到了蓬勃发展.一大批优秀作品呈现于艺苑,同时,人体绘画艺术人才... 展开更多
关键词 人体绘画 构成人体 人体艺术 人体模特 基本功训练 同动态 技能技法 人体美术 自然美 造型艺术
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Connections on Phase Space of AutonomousMechanical Systems with Constraints
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作者 郭永新 梅凤翔 《Journal of Beijing Institute of Technology》 EI CAS 1997年第3期213-220,共8页
The covariance of a dynamical flow with respect of a connection on tangent burdle is put forward The connection of an autonomous constrained mechanical system is found whose geodesic equations are equations of... The covariance of a dynamical flow with respect of a connection on tangent burdle is put forward The connection of an autonomous constrained mechanical system is found whose geodesic equations are equations of motion of the systems The connection is determined by dynamical functions and constraints of the system of the system and is reduced to the usual dynarmical connection of the dynamical flow is second drder homogmogeneous one. 展开更多
关键词 vertical endomorphism coection dynamical flow GEODESIC
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Multi-UAV surveillance implementation under hierarchical dynamic task scheduling architecture 被引量:4
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作者 WU Wen-di WU Yun-long +3 位作者 LI Jing-hua REN Xiao-guang SHI Dian-xi TANG Yu-hua 《Journal of Central South University》 SCIE EI CAS CSCD 2020年第9期2614-2627,共14页
In this paper,we consider a multi-UAV surveillance scenario where a team of unmanned aerial vehicles(UAVs)synchronously covers an area for monitoring the ground conditions.In this scenario,we adopt the leader-follower... In this paper,we consider a multi-UAV surveillance scenario where a team of unmanned aerial vehicles(UAVs)synchronously covers an area for monitoring the ground conditions.In this scenario,we adopt the leader-follower control mode and propose a modified Lyapunov guidance vector field(LGVF)approach for improving the precision of surveillance trajectory tracking.Then,in order to adopt to poor communication conditions,we propose a prediction-based synchronization method for keeping the formation consistently.Moreover,in order to adapt the multi-UAV system to dynamic and uncertain environment,this paper proposes a hierarchical dynamic task scheduling architecture.In this architecture,we firstly classify all the algorithms that perform tasks according to their functions,and then modularize the algorithms based on plugin technology.Afterwards,integrating the behavior model and plugin technique,this paper designs a three-layer control flow,which can efficiently achieve dynamic task scheduling.In order to verify the effectiveness of our architecture,we consider a multi-UAV traffic monitoring scenario and design several cases to demonstrate the online adjustment from three levels,respectively. 展开更多
关键词 prediction-based synchronization dynamic task scheduling hierarchical software architecture
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Effects of Scale-Free Topological Properties on Dynamical Synchronization and Control in Coupled Map Lattices 被引量:1
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作者 CHEN Wei FANG Jin-Qing KANG Ge-Wen 《Communications in Theoretical Physics》 SCIE CAS CSCD 2007年第2期361-368,共8页
In the paper, we study effects of scale-free (SF) topology on dynamical synchronization and control in coupled map lattices (CIVIL). Our strategy is to apply three feedback control methods, including constant feed... In the paper, we study effects of scale-free (SF) topology on dynamical synchronization and control in coupled map lattices (CIVIL). Our strategy is to apply three feedback control methods, including constant feedback and two types of time-delayed feedback, to a small fraction of network nodes to reach desired synchronous state. Two controlled bifurcation diagrams verses feedback strength are obtained respectively. It is found that the value of critical feedback strength γc for the first time-delayed feedback control is increased linearly as e is increased linearly. The GML with SF loses synchronization and intermittency occurs if γ 〉 γc. Numerical examples are presented to demonstrate all results. 展开更多
关键词 scale-free network coupled map lattice dynamical synchronization feedback control timedelayed feedback
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New Approach to Cluster Synchronization in Complex Dynamical Networks 被引量:3
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作者 LU Xin-Biao QIN Bu-Zhi LU Xin-Yu 《Communications in Theoretical Physics》 SCIE CAS CSCD 2009年第3期485-489,共5页
In this paper, a distributed control strategy is proposed to make a complex dynamical network achieve cluster synchronization, which means that nodes in the same group achieve the same synchronization state, while nod... In this paper, a distributed control strategy is proposed to make a complex dynamical network achieve cluster synchronization, which means that nodes in the same group achieve the same synchronization state, while nodes in different groups achieve different synchronization states. The local and global stability of the cluster synchronization state are analyzed. Moreover, simulation results verify the effectiveness of the new approach. 展开更多
关键词 cluster synchronization complex network distributed control strategy
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Vector control of permanent magnet synchronous motor based on dynamic matrix control 被引量:2
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作者 WANG Rui-min ZHU Qi-xian DONG Hai-ying 《Journal of Measurement Science and Instrumentation》 CAS CSCD 2017年第4期340-346,共7页
Aiming at the control problem of strongly nonlinear and coupled permanent magnet synchronous motor(PMSM)oil rig,this paper presents a predictive control method based on dynamic matrix model.In this method,the dynamic ... Aiming at the control problem of strongly nonlinear and coupled permanent magnet synchronous motor(PMSM)oil rig,this paper presents a predictive control method based on dynamic matrix model.In this method,the dynamic matrix algorithm using multistep prediction technique is applied to the speed loop control of the motor vector control.And its control effect is compared with the traditional proportional integral(PI)control of the motor.By comparing the initial dynamic response and the steady-state recovery under load interference of the two methods,it is shown that the dynamic response and the robustness of the motor controlled by the new method is better than that controlled by conventional PI method.And the feasibility of new control in the application of PMSM oil rig is verified. 展开更多
关键词 permanent magnet synchronous motor (PMSM) predictive control dynamic matrix speed loop
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L2 Syntactic Alignment in the Reading-Writing Integrated Continuation Task: Evidence From Chinese EFL Learners’ Description of Motion Events 被引量:7
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作者 Min WANG Qiao GAN Julie BOLAND 《Chinese Journal of Applied Linguistics》 2021年第3期292-313,430,共23页
This study investigated how the mode in which the reading-writing integrated continuation task was conducted modulates the effects of second language(L2) syntactic alignment, through the English motion event construct... This study investigated how the mode in which the reading-writing integrated continuation task was conducted modulates the effects of second language(L2) syntactic alignment, through the English motion event construction with manner verbs. Ninety Chinese students were assigned to either of the two experimental groups or a control group, and they all experienced a pretest, an alignment phase and a posttest. In the alignment phase, the two experimental groups completed a reading-writing integrated continuation task but in different modes. For the multi-turn mode,participants reconstructed a picture story by continuing the episodes extracted from the story with one episode presented and continued at a time;for the single-turn mode, the first half of the same picture story was presented as a chunk, and then participants read and continued it. Results show that L2 learners aligned with the target structure in completing the story, and the alignment effect was retained in the posttest conducted after a delay of two weeks. Moreover, syntactic alignment was modulated by task mode with the multi-turn group exhibiting stronger immediate and longterm alignment effects. We conclude that the continuation task is a fruitful context for L2 structural alignment, and the magnitude of alignment effect hinges on interactive intensity. 展开更多
关键词 reading-writing integrated continuation task syntactic alignment task mode interactive intensity motion event construction with manner verbs L2 learning
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Global Synchronization of Directed Networks with Fast Switching Topologies
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作者 LU Xin-Biao QIN Bu-Zhi LU Xin-Yu 《Communications in Theoretical Physics》 SCIE CAS CSCD 2009年第12期1019-1024,共6页
Global synchronization of a class of directed dynamical networks with switching topologies is investigated.It is found that if there is a directed spanning tree in the fixed time-average of network topology and the ti... Global synchronization of a class of directed dynamical networks with switching topologies is investigated.It is found that if there is a directed spanning tree in the fixed time-average of network topology and the time-averageis achieved sufficiently fast,then the network will reach global synchronization for sufficiently large coupling strength. 展开更多
关键词 global synchronization directed network fast switch
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Soil organic carbon dynamics study bias deduced from isotopic fractionation in corn plant
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作者 Chenglong Tu Congqiang Liu +2 位作者 Xiaohui Lu Lifeng Cui Jiayin Du 《Acta Geochimica》 EI CAS CSCD 2017年第3期535-538,共4页
Carbon stable isotope techniques were extensively employed to trace the dynamics of soil organic carbon(SOC)across a land-use change involving a shift to vegetation with different photosynthetic pathways.Based on the ... Carbon stable isotope techniques were extensively employed to trace the dynamics of soil organic carbon(SOC)across a land-use change involving a shift to vegetation with different photosynthetic pathways.Based on the isotopic mass balance equation,relative contributions of new versus old SOC,and SOC turnover rate in corn fields were evaluated world-wide.However,most previous research had not analyzed corn debris left in the field,instead using an average corn plant δ^(13)C value or a measured value to calculate the proportion of corn-derived SOC,either of which could bias results.This paper carried out a detailed analysis of isotopic fractionation in corn plants and deduced the maximum possible bias of SOC dynamics study.The results show approximately 3‰ isotopic fractionation from top to bottom of the corn leaf.The ^(13)C enrichment sequence in corn plant was tassel﹥stalk or cob﹥root﹥leaves.Individual parts accounting for the total dry mass of corn returned distinct values.Consequently,the average δ^(13)C value of corn does not represent the actual isotopic composition of corn debris.Furthermore,we deduced that the greater the fractionation in corn plant,the greater the possible bias.To alleviate bias of SOC dynamics study,we suggest two measures:analyze isotopic compositions and proportions of each part of the corn and determine which parts of the corn plant are left in the field and incorporated into SOC. 展开更多
关键词 Bias of SOC dynamics study Isotopic fractionation in corn Isotope mass balance equation Bias range
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Solution of Chemical Dynamic Optimization Using the Simultaneous Strategies 被引量:2
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作者 刘兴高 陈珑 胡云卿 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2013年第1期55-63,共9页
An approach of simultaneous strategies with two novel techniques is proposed to improve the solution accuracy of chemical dynamic optimization problems. The first technique is to handle constraints on control vari- ab... An approach of simultaneous strategies with two novel techniques is proposed to improve the solution accuracy of chemical dynamic optimization problems. The first technique is to handle constraints on control vari- ables based on the finite-element collocation so as to control the approximation error for discrete optimal problems, where a set of control constraints at dement knots are integrated with the procedure for optimization leading to a significant gain in the accuracy of the simultaneous strategies. The second technique is to make the mesh refine- ment more feasible and reliable by introducing length constraints and guideline in designing appropriate element length boundaries, so that the proposed approach becomes more efficient in adjusting dements to track optimal control profile breakpoints and ensure accurate state and centrol profiles. Four classic benchmarks of dynamic op- timization problems are used as illustrations, and the proposed approach is compared with literature reports. The research results reveal that the proposed approach is preferz,ble in improving the solution accuracy of chemical dy- namic optimization problem. 展开更多
关键词 dynamic optimization simultaneous strategy control constraints mesh refinement solution accuracy
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Synchronization and Bifurcation of General Complex Dynamical Networks
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作者 SUN Wei-Gang XU Cong-Xiang +1 位作者 LI Chang-Pin FANG Jin-Qing 《Communications in Theoretical Physics》 SCIE CAS CSCD 2007年第6期1073-1075,共3页
In the present paper, synchronization and bifurcation of general complex dynamical networks are investigated. We mainly focus on networks with a somewhat general coupling matrix, i.e., the sum of each row equals a non... In the present paper, synchronization and bifurcation of general complex dynamical networks are investigated. We mainly focus on networks with a somewhat general coupling matrix, i.e., the sum of each row equals a nonzero constant u. We derive a result that the networks can reach a new synchronous state, which is not the asymptotic limit set determined by the node equation. At the synchronous state, the networks appear bifurcation if we regard the constant u as a bifurcation parameter. Numerical examples are given to illustrate our derived conclusions. 展开更多
关键词 complex dynamical networks SYNCHRONIZATION BIFURCATION
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Research on the structure design of double eccentric coaxial spherical robot
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作者 Xuelai Shang 《International Journal of Technology Management》 2013年第2期76-78,共3页
The paper design a double eccentric mass driven spherical robot, the ball is also subject to eccentric force and inertia force that generate by internal drive units in movement. Due to the unique spherical shell, the ... The paper design a double eccentric mass driven spherical robot, the ball is also subject to eccentric force and inertia force that generate by internal drive units in movement. Due to the unique spherical shell, the robot in the dynamic state transition process, Friction cannot offset the robot motion state change due to internal driving motion error of small units. In order to make linear movement of the spherical robot that can smooth start, stop and speed control, the paper design a method for linear motion driven spherical robot with double eccentric mass control. The improved driving eccentric mass of robot total mass ratio is larger, that can provide the eccentric torque and inertia moment more, the robot has higher motion velocity. 展开更多
关键词 Spherical robot double eccentric mass dynamic analysis
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UV Photolysis of N2O Isotopomers: Isotopic Fractionations and Product Rotational Quantum State Distributions
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作者 Mohammad Noh Daud 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2011年第6期679-685,I0003,共8页
The time-dependent quantum wave packet method is used to study the dynamics of the pho- todissociation processes for the isotopomers 14N14N16O, 14N15N16O, 15N14N16O, 15N15N16O, 14N14N17O, and 14N14N18O. In general, th... The time-dependent quantum wave packet method is used to study the dynamics of the pho- todissociation processes for the isotopomers 14N14N16O, 14N15N16O, 15N14N16O, 15N15N16O, 14N14N17O, and 14N14N18O. In general, the computed isotopic fractionation factors derived from the absorption cross sections of five heavy isotopomers are in good agreement with the experimental results. Relative to the 14NI4N16O isotopomer, the N2 rotational state distributions for the isotopically nitrogen substituted N2O are found to be entirely shifted to higher rotational states. Similar to its isotopic fractionation factors, the N2 rotational state distributions for the asymmetric isotopomers 14N15N16O and 15N14N16O are found to be observably different. 展开更多
关键词 Time-dependent wavepacket Isotopic fractionation Product rotational distribution
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A Novel Synergy Selection Mechanism among Multi- Devices for Ubiquitous Services
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作者 RUI Lanlan MAO Xiyue QIU Xuesong 《China Communications》 SCIE CSCD 2014年第A01期128-134,共7页
It is a challenge to select an optimal set of devices to accomplish a graph-based ubiquitous service and execute it continuously under the circumstances of dynamic environments and limited device capability. We elabor... It is a challenge to select an optimal set of devices to accomplish a graph-based ubiquitous service and execute it continuously under the circumstances of dynamic environments and limited device capability. We elaborate a Synergy- aware Selection Mechanism (SSM) considering synergetic among devices. In the SSM, we design a distributed algorithm to integrate the devices and a dynamic updating weight method. The simulation results show that SSM can make devices composed together to ensure the continuity and smoothness of service 展开更多
关键词 ubiquitous service synergy-aware quality of service SUSTAINABILITY
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Passive control of Permanent Magnet Synchronous Motor chaotic system based on state observer
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作者 QI Dong-lian WANG Qiao 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2006年第12期1979-1983,共5页
Passive system theory was applied to propose a new passive control method with nonlinear observer of the Permanent Magnet Synchronous Motor chaotic system. Through constructing a Lyapunov function, the subsystem of th... Passive system theory was applied to propose a new passive control method with nonlinear observer of the Permanent Magnet Synchronous Motor chaotic system. Through constructing a Lyapunov function, the subsystem of the Permanent Magnet Synchronous Motor chaotic system could be proved to be globally stable at the equilibrium point. Then a controller with smooth state feedback is designed so that the Permanent Magnet Synchronous Motor chaotic system can be equivalent to a passive system. To get the state variables of the controller, the nonlinear observer is also studied. It is found that the outputs of the nonlinear observer can approximate the state variables of the Permanent Magnet Synchronous Motor chaotic system if the system’s nonlinear function is a globally Lipschitz function. Simulation results showed that the equivalent passive system of Permanent Magnet Synchronous Motor chaotic system could be globally asymptotically stabilized by smooth state feedback in the observed parameter convergence condition area. 展开更多
关键词 Permanent Magnet Synchronous Motor Passive system State observer
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Function Projective Synchronization of Fractional-Order Hyperchaotic System Based on Open-Plus-Closed-Looping
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作者 王兴元 刘荣 张娜 《Communications in Theoretical Physics》 SCIE CAS CSCD 2011年第4期617-621,共5页
The purpose of this paper is to analyze the dynamic behavior of fractional-order four-order hyperchaotic Lii system, and use the Open-Plus-Closed-Looping (OPCL) coupling method to construct the system's correspondi... The purpose of this paper is to analyze the dynamic behavior of fractional-order four-order hyperchaotic Lii system, and use the Open-Plus-Closed-Looping (OPCL) coupling method to construct the system's corresponding response system, and then implement function projective synchronization (FPS) of fractional-order drive-response system with system parameters perturbation or not. Finally, the numerical simulations verify the effectiveness and robustness of this scheme. 展开更多
关键词 HYPERCHAOTIC FPS OPCL FRACTIONAL-ORDER
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Collaboration strategy for software dynamic evolution of multi-agent system
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作者 李青山 褚华 +2 位作者 张曼 李敏 刁亮 《Journal of Central South University》 SCIE EI CAS CSCD 2015年第7期2629-2637,共9页
As the ability of a single agent is limited while information and resources in multi-agent systems are distributed, cooperation is necessary for agents to accomplish a complex task. In the open and changeable environm... As the ability of a single agent is limited while information and resources in multi-agent systems are distributed, cooperation is necessary for agents to accomplish a complex task. In the open and changeable environment on the Internet, it is of great significance to research a system flexible and capable in dynamic evolution that can find a collaboration method for agents which can be used in dynamic evolution process. With such a method, agents accomplish tasks for an overall target and at the same time, the collaborative relationship of agents can be adjusted with the change of environment. A method of task decomposition and collaboration of agents by improved contract net protocol is introduced. Finally, analysis on the result of the experiments is performed to verify the improved contract net protocol can greatly increase the efficiency of communication and collaboration in multi-agent system. 展开更多
关键词 multi-agent system dynamic evolution task decomposition collaboration
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电教媒体在美术教学中的应用
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作者 赵雪洪 《江西教育(管理版)(A)》 北大核心 1995年第11期46-46,共1页
电教媒体在美术教学中的应用赵雪洪(四川省宣汉师范附小)在小学美术教学中,充分利用电教媒体直观、生动、丰富的视听效果,对激发学生兴趣,发展联想,加深对新知识的理解,拓宽思维的广度和深度有着十分重要的作用。一、运用电教故... 电教媒体在美术教学中的应用赵雪洪(四川省宣汉师范附小)在小学美术教学中,充分利用电教媒体直观、生动、丰富的视听效果,对激发学生兴趣,发展联想,加深对新知识的理解,拓宽思维的广度和深度有着十分重要的作用。一、运用电教故事,创设情景,激发兴趣教师围绕教学... 展开更多
关键词 电教媒体 美术教学 教学内容 教师 《春天来了》 龟兔赛跑 同动态 教学中的应用 《小蝌蚪找妈妈》 演示教学
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Adaptive Synchronization of Fractional Order Complex-Variable Dynamical Networks via Pinning Control 被引量:1
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作者 Da-Wei Ding Jie Yah +1 位作者 Nian Wang Dong Liang 《Communications in Theoretical Physics》 SCIE CAS CSCD 2017年第9期366-374,共9页
In this paper, the synchronization of fractional order complex-variable dynamical networks is studied using an adaptive pinning control strategy based on close center degree. Some effective criteria for global synchro... In this paper, the synchronization of fractional order complex-variable dynamical networks is studied using an adaptive pinning control strategy based on close center degree. Some effective criteria for global synchronization of fractional order complex-variable dynamical networks are derived based on the Lyapunov stability theory. From the theoretical analysis, one concludes that under appropriate conditions, the complex-variable dynamical networks can realize the global synchronization by using the proper adaptive pinning control method. Meanwhile, we succeed in solving the problem about how much coupling strength should be applied to ensure the synchronization of the fraetionla order complex networks. Therefore, compared with the existing results, the synchronization method in this paper is more general and convenient. This result extends the synchronization condition of the real-variable dynamical networks to the complex-valued field, which makes our research more praetical. Finally, two simulation examples show that the derived theoretical results are valid and the proposed adaptive pinning method is effective. 展开更多
关键词 complex-variable fractional order complex networks SYNCHRONIZATION adaptive pinning control
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