This book constitutes the refereed proceedings of the 7th International Conference on Evolvable Systems, ICES 2007, held in Wuhan, China, in September 2007. The 41 revised full papers presented were carefully reviewed and selected from 123 submissions. The papers are organized in topical sections on digital hardware evolution, analog hardware evolution, bio-inspired systems, mechanical hardware evolution, evolutionary design, evolutionary algorithms in hardware design, and hardware implementation of evolutionary algorithms. This book constitutes the refereed proceedings of the 7th International Conference on Evolvable Systems, ICES 2007, held in Wuhan, China, in September 2007. The 41 revised full papers collected in this volume are organized in topical sections on digital hardware evolution, analog hardware evolution, bio-inspired systems, mechanical hardware evolution, evolutionary design, evolutionary algorithms in hardware design, and hardware implementation of evolutionary algorithms. Digital Hardware Evolution An Online EHW Pattern Recognition System Applied to Sonar Spectrum Classification 1 Kyrre Glette, Jim Torresen, and Moritoshi Yasunaga Design of Electronic Circuits Using a Divide-and-Conquer Approach 13 Guoliang He, Yuanxiang Li, Li Yu, Wei Zhang, and Hang Tu Implementing Multi-VRC Cores to Evolve Combinational Logic Circuits in Parallel 23 Jin Wang, Chang Hao Piao, and Chong Ho Lee An Intrinsic Evolvable Hardware Based on Multiplexer Module Array 35 Jixiang Zhu, Yuanxiang Li, Guoliang He, and Xuewen Xia Estimating Array Connectivity and Applying Multi-output Node Structure in Evolutionary Design of Digital Circuits 45 Jie Li and Shitan Huang Research on the Online Evaluation Approach for the Digital Evolvable Hardware 57 Rui Yao, You-ren Wang, Sheng-lin Yu, and Gui-jun Gao Research on Multi-objective On-Line Evolution Technology of Digital Circuit Based on FPGA Model 67 Guijun Gao, Youren Wang, Jiang Cui, and Rui Yao Evolutionary Design of Generic Combinational Multipliers Using Development 77 Michal Bidlo Analog Hardware Evolution Automatic Synthesis of Practical Passive Filters Using Clonal Selection Principle-Based Gene Expression Programming 89 Zhaohui Gan, Zhenkun Yang, Gaobin Li, and Min Jiang Research on Fault-Tolerance of Analog Circuits Based on Evolvable Hardware 100 Qingjian Ji, Youren Wang, Min Xic, and Jiang Cui Analog Circuit Evolution Based on FPTA-2 109 Qiongqin Wu, Yu Shi, Juan Zheng, Rui Yao, and Youren Wang Bio-inspired Systems Knowledge Network Management System with Medicine Self Repairing Strategy 119 JeongYon Shim Design of a Cell in Embryonic Systems with Improved Efficiency and Fault-Tolerance 129 Yuan Zhang, Youren Wang, Shanshan Yang, and Min Xie Design on Operator-Based Reconfigurable Hardware Architecture and Cell Circuit 140 Min Xie, Youren Wang, Li Wang, and Yuan Zhang Bio-inspired Systems with Self-developing Mechanisms 151 Andr tauffer, Daniel Mange, Jo Rossier, and Fabien Vannel Development of a Tiny Computer-Assisted Wireless EEG Biofeedback System 163 Haifeng Chen, Ssanghee Seo, Donghee Ye, and Jungtae Lee Steps Forward to Evolve Bio-inspired Embryonic Cell-Based Electronic Systems 174 Elhadj Benkhelifa, Anthony Pipe, Mokhtar Nibouche and Gabriel Dragffy Evolution of Polymorphic Self-checking Circuits 186 Lukas Sekanina Mechanical Hardware Evolution Sliding Algorithm for Reconfigurable Arrays of Processors 198 Natalia Dowding and Andy M. Tyrrell System-Level Modeling and Multi-objective Evolutionary Design of Pipelined FFT Processors for Wireless OFDM Receivers 210 Erfu Yang, Ahmet T. Erdogan, Tughrul Arslan, and Nick Barton Reducing the Area on a Chip Using a Bank of Evolved Filters 222 Zdenek Vasicek and Lukas Sekanina Evolutionary Design Walsh Function Systems: The Bisectional Evolutional Generation Pattern 233 Nengchao Wang, Jianhua and Baochang Shi Extrinsic Evolvable Hardware on the RISA Architecture 244 Andrew J. Greensted and Andy M. Tyrrell Evolving and Analysing "Useful" Redundant Logic 256 Asbjoern Djupdal and Pauline C. Haddow Adaptive Transmission Technique in Underwater Acoustic Wireless Communication 268 Guoqing Zhou and Taebo Shim Autonomous Robot Path Planning Based on Swarm Intelligence and Stream Functions 277 Chengyu Hu, Xiangning Wu, Qingzhong Liang, and Yongji Wang Research on Adaptive System of the BTT-45 Air-to-Air Missile Based on Multilevel Hierarchical Intelligent Controller 285 Yongbing Zhong, Jinfu Feng, Zhizhuan Peng, and Xiaolong Liang The Design of an Evolvable On-Board Computer 292 Chen Shi, Shitan Huang, and Xuesong Yan Evolutionary Algorithms in Hardware Design Extending Artificial Development: Exploiting Environmental Information for the Achievement of Phenotypic Plasticity 297 Gunnar Tufte and Pauline C. Haddow UDT-Based Multi-objective Evolutionary Design of Passive Power Filters of a Hybrid Power Filter System 309 Shuguang Zhao, Qiu Du, Zongpu Liu, and Xianghe Pan Designing Electronic Circuits by Means of Gene Expression Programming II 319 Xuesong Yan, Wei Wei, Qingzhong Liang, Chengyu Hu, and Yuan Yao Designing Polymorphic Circuits with Evolutionary Algorithm Based on Weighted Sum Method 331 Houjun Liang, Wenjian Luo, and Xufa Wang Robust and Efficient Multi-objective Automatic Adjustment for Optical Axes in Laser Systems Using Stochastic Binary Search Algorithm 343 Nobuharu Murata, Hirokazu Nosato, Tatsumi Furuya, and Masahiro Murakawa Minimization of the Redundant Sensor Nodes in Dense Wireless Sensor Networks 355 Dingxing Zhang, Ming Xu, Wei Xiao, Junwen Gao, and Wenshen Tang Evolving in Extended Hamming Distance Space: Hierarchical Mutation Strategy and Local Learning Principle for EHW 368 Jie Li and Shitan Huang Hardware Implementation of Evolutionary Algorithms Adaptive and Evolvable Analog Electronics for Space Applications 379 Adrian Stoica, Didier Keymeulen, Ricardo Zebulum, Mohammad Mojarradi, Srinivas Katkoori, and Taher Daud Improving Flexibility in On-Line Evolvable Systems by Reconfigurable Computing 391 Jim Torresen and Kyrre Glette Evolutionary Design of Resilient Substitution Boxes: From Coding to Hardware Implementation 403 Nadia Nedjah and Luiza de Macedo Mourelle A Sophisticated Architecture for Evolutionary Multiobjective Optimization Utilizing High Performance DSP 415 Quanxi Li and Jingsong He FPGA-Based Genetic Algorithm Kernel Design 426 Xunying Zhang, Chen Shi, and Fei Hui Using Systolic Technique to Accelerate an EHW Engine for Lossless Image Compression 433 Yanbi Chen and Jingsong He Author Index 445