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Using multi-matching system based on a simplified deformable model of the human iris for iris recognition

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Journal of Bionic Engineering 2004年第3期1卷 183-190页

作者： MING Xing , XU Tao , WANG zheng-xuan 1 2.3.1. College of computer {2. and {3., Nanling Campus,Jilin university, 5988 Renmin Street,Changchun 13.02., P. R. china 2. College of Mechanical {2. and Engineering, Nanling Campus,Jilin university, 5988 Renmin Street, Changchun 13.02., P. R. china 3. College of computer {2. and {3., Qianwei Campus,Jilin university, 10 Qianwei Road, Changchun 13.012. P. R. china. Jilin university Jilin university Jilin university

A new method for iris recognition using a multi-matching system based on a simplified deformable model of the human iris was proposed. The method defined iris feature points and formed the feature space based on a wavelet transform. In the matching stage it worked in a crude manner. Driven by a simplified deformable iris model, the crude matching was refined. By means of such multi-matching system, the task of iris recognition was accomplished. This process can preserve the elastic deformation between an input iris image and a template and improve precision for iris recognition. The experimental results indicate the va- lidity of this method.

关键词： iris recognition wavelet transform feature points deformable model

Representation and Adaptive Transformation of Reusable Software Components

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Wuhan university Journal of Natural sciences 2001年第Z1期6卷 298-303页

作者： Xu zheng quan, Palakiyem Wallah College of computer {2. and {3.,Huazhong university of {2. and {3., Wuhan 43.074, china College of computer science and {2. Huazhong University of Science and Technology Wuhan 430074 China

The key ingredient for promoting software reuse in a repository base integrated development environment, is to provide support for the software developer who wants to search the repository to locate and retrieve suitable software components for reuse. This paper presents that reusable software components form a base to provide a flexible representation of component adaptability to any repository with a specific classification. As an alternative, it proposes to automatically identify and convert the component source code with all its information into a standard form, so that components can be transferred from one type of library to another.

关键词： reusable software component classification representation adaptability transfer

A novel model-free approach for reconstruction of time-delayed gene regulatory networks

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中国科学：生命科学英文版 2006年第2期49卷 190-200页

作者： JIANG Wei1,2. LI Xia1,2.3.4, GUO zheng1,2.3. LI Chuanxing1, WANG Lihong1 & RAO Shaoqi1,5 1. department of Bioinformatics, Harbin Medical {2., Harbin 150086,{3. 2. department of computer science, Harbin Institute of technology, Harbin 150080,{3. 3. School of Life science and technology, Tongji {2., Shanghai 2.0092.{3. 4. Biomedical Engineering Institute, Capital {2. of Medical sciences, Beijing 100054,{3. 5. departments of Cardiovascular Medicine and Molecular Cardiology, Cleveland Clinic Foundation, Cleveland, Ohio 44195, USA department of Bioinformatics Harbin Medical University Harbin 150086 China department of computer {2. Harbin Institute of Technology Harbin 150080 China School of Life science technology Tongji University Shanghai 200092 China Biomedical Engineering Institute Capital University of Medical Sciences Beijing 100054 China departments of Cardiovascular Medicine Molecular Cardiology Cleveland Clinic Foundation Cleveland Ohio 44195 USA

Reconstruction of genetic networks is one of the key scientific challenges in functional genomics. This paper describes a novel approach for addressing the regulatory dependencies be-tween genes whose activities can be delayed by multiple units of time. The aim of the proposed ap-proach termed TdGRN (time-delayed gene regulatory networking) is to reversely engineer the dy-namic mechanisms of gene regulations, which is realized by identifying the time-delayed gene regu-lations through supervised decision-tree analysis of the newly designed time-delayed gene expres-sion matrix, derived from the original time-series microarray data. A permutation technique is used to determine the statistical classification threshold of a tree, from which a gene regulatory rule(s) is ex-tracted. The proposed TdGRN is a model-free approach that attempts to learn the underlying regula-tory rules without relying on any model assumptions. Compared with model-based approaches, it has several significant advantages: it requires neither any arbitrary threshold for discretization of gene transcriptional values nor the definition of the number of regulators (k). We have applied this novel method to the publicly available data for budding yeast cell cycling. The numerical results demonstrate that most of the identified time-delayed gene regulations have current biological knowledge supports.

关键词： gene regulatory networks, time delayed, decision tree.

Engineering hydrophobic protective layers on zinc anodes for enhanced performance in aqueous zinc-ion batteries

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Journal of Energy Chemistry 2024年第10期97卷 1-11,I0001页

作者： Taofeng Li Suxia Yan Hongyu Dong Yang zheng Kun Ming Ying Chen Haitao Li Guochun Li Zhixia He weimin Li Quan Wang Xiaohui Song Junfeng Liu Edison Huixiang Ang Yong Wang Institute for Energy Research Jiangsu UniversityZhenjiang 212013jiangsuChina Natural sciences and science Education National Institute of EducationNanyang Technological UniversitySingapore 63766Singapore School of Mechanical Engineering Jiangsu UniversityZhenjiang 212013JiangsuChina Shenzhen Cllege of Advanced technology University of Chinese Academy of SciencesShenzhen 518055GuangdongChina Shandong Zhongke Advanced technology Co. LtdJinan 250101ShandongChina School of Materials science and Engineering HefeiUniversity of TechnolgyHefei230009AnhuiChi

Aqueous zinc-ion batteries possess substantial potential for energy storage applications;however,they are hampered by challenges such as dendrite formation and uncontrolled side reactions occurring at the zinc *** our investigation,we sought to mitigate these issues through the utilization of in situ zinc complex formation reactions to engineer hydrophobic protective layers on the zinc anode *** robust interfacial layers serve as effective barriers,isolating the zinc anode from the electrolyte and active water molecules and thereby preventing hydrogen evolution and the generation of undesirable ***,the presence of numerous zincophilic sites within these protective layers facilitates uniform zinc deposition while concurrently inhibiting dendrite *** comprehensive evaluation of functional anodes featuring diverse functional groups and alkyl chain lengths,we meticulously scrutinized the underlying mechanisms influencing performance *** analysis involved precise modulation of interfacial hydrophobicity,rapid Zn^(2.)ion transport,and ordered deposition of Zn^(2.)***,the optimized anode,fabricated with octadecylphosphate(OPA),demonstrated exceptional performance *** Zn//Zn symmetric cell exhibited remarkable longevity,exceeding 4000 h under a current density of 2.mA cm^(-2.and a capacity density of 2.mA h cm^(-2.,Furthermore,when integrated with a VOH cathode,the complete cell exhibited superior capacity retention compared to anodes modified with alternative organic molecules.

关键词： Aqueous zinc-ion batteries Hydrophobic protective layers Zinc anode stability Dendrite growth inhibition Energy storage

Spiral waves in CIMA model and its LBGK simulation

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Communications in Nonlinear science and Numerical Simulation 2001年第2期6卷 68-73页

作者： Qing LI, Chuguang zheng and Nengchao WANG College of computer {2. and {3., Huazhong university of {2. and {3., Wuhan 43.074, china e-mail: qingli @ public. *** State Key Laboratory of Coal Combustion, Huazhong university College of computer science and {2. Huazhong University of Science and Technology Wuhan 430074 China State Key Laboratory of Coal Combustion Huazhong University of Science and Technology Wuhan 430074 China Parallel Computation Institute Huazhong University of Science and Technology Wuhan 430074 China

Two type of structures-Turing patterns and spiral waves-are obtained in chloride-iodide-malonic acid (CIMA) reaction-diffusion model by using lattice Bhatnagar-Gross-Krook (LBGK) method.

关键词： lattice Boltzmann method reaction-diffusion Turing patterns spiral waves

Modelling Immune System:Principles,Models,Analysis and Perspectives

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Journal of Bionic Engineering 2009年第1期6卷 77-85页

作者： Xiang-hua Li~1, zheng-xuan Wang~1, Tian-yang Lu~2. Xiang-jiu Che~11. College of computer {2. and {3., Jilin university, Changchun 13.012. P. R. china2. College of computer {2. and {3., Harbin Engineering university, Harbin 150001, P. R. china [a]College of computer science and {2. Jilin University Changchun 130012 P. R. China [b]College of Computer Science and Technology Harbin Engineering University Harbin 150001 P. R. China

The biological immune system is a complex adaptive *** are lots of benefits for building the model of the immune *** biological researchers,they can test some hypotheses about the infection process or simulate the responses of some *** computer researchers,they can build distributed,robust and fault tolerant networks inspired by the functions of the immune *** paper provides a comprehensive survey of the literatures on modelling the immune *** the methodology perspective,the paper compares and analyzes the existing approaches and models,and also demonstrates the focusing research effort on the future immune models in the next few years.

关键词： immune system modelling agent-based simulation complex adaptive system (CAS) HIV

Asymmetrical Fault Current Calculation Method and Influencing Factors Analysis of Droop-Controlled Inverters

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CSEE Journal of Power and Energy Systems 2024年第2期10卷 562-573页

作者： Huimin Zhao Zhikang Shuai Jun Ge An Luo weimin Wu Z.John Shen College of Electrical and Information Engineering Hunan UniversityChangsha 410006China Electrical Engineering department Shanghai Maritime UniversityShanghai 201306China department of Electrical and computer Engineering Ilinois Institute of TechnologyChicagoIL 60616 USA

Since the fault dynamic of droop-controlled inverter is different from synchronous generators (SGs), protection devices may become invalid, and the fault overcurrent may damage power electronic devices and threaten the safety of the microgrid. Therefore, it is imperative to conduct a comprehensive fault analysis of the inverter to guide the design of protection schemes. However, due to the complexity of droop control strategy, existing literatures have simplified asymmetric fault analysis of droop-controlled inverters to varying degrees. Therefore, accurate fault analysis of a droop-controlled inverter is needed. In this paper, by analyzing the control system, an accurate fault model is established. Based on this, a calculation method for instantaneous asymmetrical fault current is proposed. In addition, the current components and current characteristics are analyzed. It was determined that fault currents are affected by control loops, fault types, fault distance and nonlinear limiters. In particular, the influences of limiters on the fault model, fault current calculation and fault current characteristics were analyzed. Through detailed analysis, it was found that dynamics of the control loop cannot be ignored, the fault type and fault distance determine fault current level, and part of the limiters will totally change the fault current trend. Finally, calculation and experimental results verify the correctness of the proposed method.

关键词： Asymmetrical fault analysis droop control fault current calculation method limiter transient fault characteristics

Assigning Task by Parallel Genetic Algorithm Based on PVM

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Wuhan university Journal of Natural sciences 2001年第Z1期6卷 579-584页

作者： zheng Zhi jun, Dong Xiao she, zheng Shou qi {2. of {3. science and technology,Xi’an Jiaotong university,Xi’an 710049,china department of computer {2. and {3. Xi'an Jiaotong University Xi'an 710049 China

Genetic algorithm has been proposed to solve the problem of task assignment. However, it has some drawbacks, e.g., it often takes a long time to find an optimal solution, and the success rate is low. To overcome these problems, a new coarse grained parallel genetic algorithm with the scheme of central migration is presented, which exploits isolated sub populations. The new approach has been implemented in the PVM environment and has been evaluated on a workstation network for solving the task assignment problem. The results show that it not only significantly improves the result quality but also increases the speed for getting best solution.

关键词： task assignment genetic algorithm parallel process PVM

Software structure evaluation based on the interaction and encapsulation of methods

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science china(Information sciences) 2012年第12期55卷 2816-2825页

作者： zheng QingHua 1,2.OU ZhiJiang 1,2.LIU Ting 1,YANG ZiJiang 3.HOU YuQiao 1,2.& zheng Chao 1,{2. MOE Key Laboratory for Intelligent Networks and Network Security,Xi'an Jiaotong university,Xian 710049,{3. 2.Shaanxi Key Laboratory of Satellite-terrestrial Network technology R&D,Xi'an Jiaotong university,Xian 710049,{3. 3.department of {13. science,Western Michigan university,Michigan,USA 1. MOE Key Laboratory for Intelligent Networks and Network Security Xi’an Jiaotong University Xian 710049 China2. Shaanxi Key Laboratory of Satellite-terrestrial Network Technology R&D Xi’an Jiaotong University Xian 710049 China3. Department of Computer Science Western Michigan University Michigan USA

Software structure is the most important factor affecting the quality of a *** evaluation of software structure is a foundational technique for software ***,the traditional evaluation criteria,such as "high cohesion and low coupling",are no longer appropriate for the new web applications,which are designed with a hierarchical framework.A novel approach is proposed in this paper to evaluate software quality based on the interaction and encapsulation of *** particular,two criteria for high quality software,the functional and hierarchical structure,are proposed to support widely used web *** cohesion and coupling and layer matching ratios between methods within a software package are calculated to determine whether the package is well implemented in terms of functional or hierarchical *** approach enables us to quantify the quality of a software system according to the structural types of its *** were carried out on 18 versions of Struts and six open-source software *** evaluation concurs with the intuition that minor upgrades,aimed at fixing bugs and adding minor functionality quickly,reduce software quality,whereas major upgrades,which normally clean up messy code and re-construct the software,improve software quality.

关键词： software structure evaluation method interaction method encapsulation functional structure hierarchical structure