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Small Universal Spiking Neural P Systems with Anti-Spikes

JOURNAL OF COMPUTATIONAL AND THEORETICAL NANOSCIENCE 2013年第4期10卷 999-1006页

作者： Song, Tao Jiang, Yun Shi, Xiaolong Zeng, Xiangxiang Huazhong Univ Sci & Technol Dept Control Sci & Engn Key Lab Image Proc & Intelligent Control Wuhan 430074 Hubei Peoples R China Chongqing Technol & Business Univ Sch Comp Sci & Informat Engn Chongqing 400067 Peoples R China Xiamen Univ Dept Comp Sci Xiamen 361005 Fujian Peoples R China

Spiking neural P systems are a class of distributed parallel computing devices inspired from the way neurons communicate by means of spikes. A spiking neural P system with anti-spikes is a variant of spiking neural P system, which is inspired by inhibitory impulses/spikes or inhibitory synapses. In this work, we investigate the necessary resource (specifically, the number of neurons) to construct universal spiking neural P systems with anti-spikes (that is, the systems can do what Turing machine do). It is proved that there exists a universal spiking neural P system with anti-spikes having 75 neurons and a universal spiking neural P system with anti-spikes having inhibitory synapses that consists of 70 neurons. The results show that spiking neural P system with anti-spikes having small number of neurons can have Turing "creativity."

关键词： Membrane Computing Spiking Neural P System Universality Register Machine

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Applications of Collective Circular Motion control to Multirobot Systems

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IEEE TRANSACTIONS ON control SYSTEMS TECHNOLOGY 2013年第4期21卷 1416-1422页

作者： Zhang, Hai-Tao Chen, Zhiyong Yan, Long Yu, Wenwu Huazhong Univ Sci & Technol Dept Control Sci & Engn Key Lab Image Proc & Intelligent Control Wuhan 430074 Peoples R China Huazhong Univ Sci & Technol State Key Lab Digital Mfg Equipment & Technol Wuhan 430074 Peoples R China Univ Newcastle Sch Elect Engn & Comp Sci Callaghan NSW 2308 Australia Southeast Univ Dept Math Nanjing 210096 Jiangsu Peoples R China

Collective circular motion is common in both natural systems and engineering applications. Recent theoretical research has intensively studied the fundamental control mechanism. This brief aims to pave the way from theoretical design to practical implementation by addressing a set of issues encountered in real applications. As a result, a practically effective control algorithm is successfully implemented and examined for a multirobot system to achieve a desired circular formation.

关键词： Collective circular motions decentralized control multiagent systems (MASs) nonholonomic vehicles

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A probability-based object tracking method

A probability-based object tracking method

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4th International Conference on Intelligence Science and Big Data Engineering, IScIDE 2013

作者： Song, Xu Li, Guoqiang Li, Ying Zhang, Yanning Shaanxi Province Key Lab. of Speech and Image Information Processing Northwestern Polytechnical University Xi'an 710129 China Science and Technology on Electro-optic Control Laboratory Louyang 471009 China

ISBN: (纸本)9783642420566

Here we take advantage of the signal recovery power of Compressive Sensing (CS) to significantly reduce the computational complexity brought by the high-dimension image data, then an effective and efficient low-dimensional subspace representation of the object is computing by applying Principal Component Analysis (PCA) to a collection of object observations which are low-dimensional vectors derived from CS. An incremental PCA algorithm is used to update this subspace model for characterizing the object appearance changes. Meanwhile, two distances derived from Probabilistic Principal Component Analysis (PPCA): distance from feature space (DFFS) and distance in feature space (DIFS), are used to describe visual similarity between the learned subspace representation model and candidate targets. Comparing with the traditional used reconstruction error, the sum of two distances: DFFS + DIFS, is more accurate and more robust to noises and partial occlusions. Numerous experiment demonstrate that subspace representation model can handle the situation that target objects experience pose changes, scale changes, significant illumination variation, partial occlusions and so on. © 2013 Springer-Verlag Berlin Heidelberg.

关键词： Compressed sensing

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Combination-combination synchronization among four identical or different chaotic systems

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NONLINEAR DYNAMICS 2013年第3期73卷 1211-1222页

作者： Sun, Junwei Shen, Yi Zhang, Guodong Xu, Chengjie Cui, Guangzhao Huazhong Univ Sci & Technol Dept Control Sci & Engn Wuhan 430074 Hubei Peoples R China Huazhong Univ Sci & Technol Key Lab Minist Educ Image Proc & Intelligent Cont Wuhan 430074 Hubei Peoples R China Zhengzhou Univ Light Ind Henan Key Lab Informat Based Elect Appliances Zhengzhou 450002 Peoples R China

Based on one drive system and one response system synchronization model, a new type of combination-combination synchronization is proposed for four identical or different chaotic systems. According to the Lyapunov stability theorem and adaptive control, numerical simulations for four identical or different chaotic systems with different initial conditions are discussed to show the effectiveness of the proposed method. Synchronization about combination of two drive systems and combination of two response systems is the main contribution of this paper, which can be extended to three or more chaotic systems. A universal combination of drive systems and response systems model and a universal adaptive controller may be designed to our intelligent application by our synchronization design.

关键词： Combination-combination synchronization Lorenz system Rossler system Chen's system Lu system

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Detecting Motifs in DNA Sequences by Branching from Neighbors of Qualified Potential Motifs

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JOURNAL OF COMPUTATIONAL AND THEORETICAL NANOSCIENCE 2013年第9期10卷 2201-2206页

作者： Song, Tao Wang, Xun Zhang, Zhujin Hong, Liu Huazhong Univ Sci & Technol Key Lab Image Proc & Intelligent Control Dept Control Sci & Engn Wuhan 430074 Hubei Peoples R China Univ Tsukuba Grad Sch Syst & Informat Engn Tsukuba Ibaraki 3050006 Japan Harbin Inst Technol Dept Comp Sci Shenzhen Grad Sch Shenzhen 518000 Guangdong Peoples R China

Detecting motifs in DNA sequences is a major task in molecular biology to find functioning units and genes. Recently, with the purpose of using computational approaches to detect motifs, motif detecting problem was abstracted and reformulated as planted (l, d)-motif problem by computer scientists. In previous works, many instances of the problem have been used as challenges or benchmarks to test motif detecting algorithms. In this paper, we introduce a so called QPM-Branching method to detect motifs in DNA sequences. In the method, a set of qualified potential motifs are refined from background sequences using a modified projection strategy, and then the motifs can be detected by branching from the best neighbor or good neighbors of each qualified potential motif. We test the QPM-Branching method by detecting weak signal motifs and faint signal motifs, which are two categories of instances of the planted (l, d)-motif problem. It achieves significantly performances comparing with MEME, PROJECTION, GARPS and BioOptimizor. We also use the QPM-Branching method to identify binding sites of cAMP receptor protein (CRP) in Escherichia Coli and binding sites of PDR3 in the yeast Saccharomyces Cerevisiae. Experimental results show that the QPM-Branching method can correctly identify the realistic biological binding sites.

关键词： Genome Analysis Motifs Detection Projection Branching Method

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An improved method in change detection of multitemporal remote sensing image

An improved method in change detection of multitemporal remo...

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4th International Conference on Intelligence Science and Big Data Engineering, IScIDE 2013

作者： Liao, Fangshun Yu, Sufen Li, Ying Zhang, Yanning Shaanxi Provincial Key Lab. of Speech and Image Information Processing Northwestern Polytechnical University Xi'an Shaanxi 710072 China Science and Technology on Electro-optic Control Laboratory Louyang 471009 China

ISBN: (纸本)9783642420566

Traditional Markov random Field (MRF) methods assume that neighboring pixels tend to have the same label. However, this assumption is always inconsistent with the actual situation and affects the resultant accuracy of the algorithm. To overcome this, we propose an object-based Markov Random Field (OMRF) model and a change detection method based on OMRF model. The OMRF model assumes that pixels within same object are in the same class. First, we generate the difference image from multi-temporal remote sensing images. Second, Mean Shift is applied to extract objects from difference image. Finally, change detection map is generated by iterative algorithm. The experimental results show that the algorithm can effectively improve the detection accuracy of the algorithm on real remote sensing datasets. © 2013 Springer-Verlag Berlin Heidelberg.

关键词： Change detection

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Uncalibrated Path Planning in the image Space for the Fixed Camera Configuration

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自动化学报 2013年第6期39卷 759-769页

作者： LIANG Xin-Wu HUANG Xin-Han WANG Min 1. Department of Automation Shanghai Jiao Tong University Key Laboratory of System Control and Information Processing of Ministry of Education of China Shanghai 200240 China Department of Control Science and Engineering Huazhong University of Science and Technology Key Laboratory of Image Pro- cessing and Intelligent Control of Ministry of Education of China Wuhan 430074 China

基于图象的视觉 servoing 能被用来高效地控制机器人操纵者的运动。什么时候起始并且然而，需要的配置是远的是由许多研究人员，指出了如此的一条控制途径能由于它的本地性质受不了集中和稳定性问题。由指定足够的图象特征轨道在图象被... 详细信息

基于图象的视觉 servoing 能被用来高效地控制机器人操纵者的运动。什么时候起始并且然而，需要的配置是远的是由许多研究人员，指出了如此的一条控制途径能由于它的本地性质受不了集中和稳定性问题。由指定足够的图象特征轨道在图象被列在后面，我们能利用基于图象的视觉 servoing 的本地集中和稳定性避免这些问题。因此，路径在图象空间计划是在最近的年里的机器人学的一个活跃研究话题。然而，几乎所有为 camera-in-hand 配置的盒子相关结果被建立。在这篇论文，我们建议 uncalibrated 为改正照相机配置的盒子的视觉路径计划算法。这个算法在射影的空格直接计算图象特征的轨道以便他们与僵硬天体运动兼容。由把旋转和翻译的射影的代表分解成他们的各自的正规形式，我们能容易插入内推他们在射影的空间的路径。然后，在图象飞机的图象特征的轨道能经由射影的路径被产生。这样，特征点的知识组织并且照相机内在的参数没被要求。验证建议算法的可行性和表演，基于 puma560 机器人，操纵者在这被给的模拟结果糊。

关键词：路径规划算法摄像机内参数图像空间配置稳定性问题图片校准视觉伺服

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CONSENSUS OF FRACTIONAL-ORDER UNCERTAIN MULTI-AGENT SYSTEMS BASED ON OUTPUT FEEDBACK

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ASIAN JOURNAL OF control 2013年第5期15卷 1538-1542页

作者： Yin, Xiuxia Hu, Songlin Huazhong Univ Sci & Technol Dept Control Sci & Engn Wuhan 430074 Hubei Peoples R China Huazhong Univ Sci & Technol Minist Educ Image Proc & Intelligent Control Key Lab Wuhan 430074 Hubei Peoples R China Hubei Univ Arts & Sci Coll Math & Comp Sci Xiangyang Hubei Peoples R China

This paper is devoted to the consensus protocol design for a set of agents with fractional-order uncertainty dynamics where the fractional order satisfies 0<<2. For multi-agent systems (MASs) with fixed undirected topology, a distributed static output feedback protocol is proposed with an undetermined system matrix. Based on model transformation and fractional-order stability theory, sufficient conditions are derived to ensure the consensus of MASs in terms of linear matrix inequalities (LMIs). Finally, a simulation example is employed to validate the effectiveness of the proposed consensus protocol.

关键词： Fractional-order consensus MAS output feedback LMI

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Thermal management oriented steady state analysis and optimization of a kW scale solid oxide fuel cell stand-alone system for maximum system efficiency

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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 2013年第28期38卷 12404-12417页

作者： Cao, Hongliang Li, Xi Deng, Zhonghua Li, Jian Qin, Yi Huazhong Univ Sci & Technol Sch Automat Key Lab Educ Minist Image Proc & Intelligent Control Wuhan 430074 Peoples R China Huazhong Agr Univ Engn Technol Acad Wuhan 430070 Peoples R China Huazhong Univ Sci & Technol State Key Lab Mat Proc & Die & Mould Technol Sch Mat Sci & Engn Wuhan 430074 Peoples R China

This research attempts to ensure system safety while to maximize system efficiency by addressing steady state analysis and optimization for solid oxide fuel cell (SOFC) systems. Firstly, a thermal management oriented kW scale SOFC stand-alone system (primarily comprising a planar SOFC stack, a burner, and two heat exchangers) is developed, in which a special consideration for stack spatial temperature management is conducted by introducing an air bypass manifold around heat exchangers. The dynamic model of the system is performed using transient energy, species, and mass conservation equations. Secondly, based on the system model, the effects of operating parameters including fuel utilization (FU), air excess ratio (AE), bypass ratio (BR), and stack voltage (SV) on the system steady-state performances (e.g. system efficiency, stack inlet, stack outlet, and burner temperatures) are revealed. Particularly, an optimal relationship between the system efficiency and the operating parameters is proposed;the maximum system efficiency can certainly be obtained at the inlet outlet temperature critical point of the BR-AE or FU-AE planes for all SV operating points. Finally, according to the optimal relationship, a traverse optimization process is designed, and the maximum system efficiency and safe operating parameters at any efficient SV operating point are calculated. The results provide an optimal reference trajectory for control design, where the system is safe and efficiency optimization. Moreover, the results reveal two important system characteristics: (1) the burner operates within safe temperature zone as long as the temperature of the upstream stack is well controlled;(2) the control design for the system is a nonlinear optimal control with switching structure, which is a challenging control issue. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

关键词： Solid oxide fuel cell stand-alone systems Thermal management Steady state performance analysis Steady state optimization System safety Maximum system efficiency

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Handling multi-objective in an HTN planner for emergency decision-making

Handling multi-objective in an HTN planner for emergency dec...

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IEEE Conference Anthology

作者： Minglei Li Hongwei Wang Chao Qi Dan Liu Jian Wang Zhe Wang Key Laboratory of Image Processing and Intelligent Control of Education Ministry Huazhong University of Science & Technology Wuhan China

There are many multi-objective planning problems in emergency decision-making domain. HTN planners were widely used in emergency decision-making, while they have limited ability to solve optimization, especially multi-objective optimization. Aimed to handling multi-objective in HTN planners, this paper proposes a novel method based on SHOP2, which is a domain-independent state-based forward HTN planner. The method uses a weighted vector to mirror the decision maker's performance for various objectives and an anytime search algorithm to improve the ability to find the best solution plan. Finally, a case of emergency evacuation is given to testify the effectiveness of the method.

关键词： Planning Decision making Floods Optimization Vectors Measurement Search problems

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