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The Existence of a Class of Balanced Multi-output Rotation Symmetric Boolean Functions

Chinese Journal of Electronics 2018年第5期27卷 995-1001页

作者： DU Jiao FU Shaojing QU Longjiang LI Chao PANG Shanqi College of Mathematics and Information Science Henan Normal University Henan Engineering Laboratory for Big Data Statistical Analysis and Optimal Control Henan Normal University College of Computer Science National University of Defense Technology College of Liberal Arts and Science National University of Defense Technology

A new characterization of balanced rotation symmetric（n, m）-functions is presented. Based on the characterization, the nonexistence of balanced rotation symmetric（pr, m）-functions is determined, where p is an odd prime and m ≥ 2. And there exist balanced rotation symmetric（2r, m）-functions for 2 ≤ m ≤ 2r-r. With the help of these results, we also prove that there exist rotation symmetric resilient（2r, m）-functions for 2 ≤ m ≤ 2r-r-1.

关键词： Cryptography Rotation symmetric Orbit matrix Correlation immune Resilient functions

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Robust H-infinity fuzzy control for uncertain Markovian jump nonlinear singular systems with wiener process

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控制理论与应用（英文版） 2010年第2期8卷 205-210页

作者： Aiqing ZHANG 1 , Huajing FANG 2 (1.college of Mathematics and computer science, Jianghan University, Wuhan Hubei 430056, China 2.Department of control science and engineering, Huazhong University of science and Technology, Wuhan Hubei 430074, China) College of Mathematics and Computer Science Jianghan University Wuhan Hubei China Department of Control Science and Engineering Huazhong University of Science and Technology Wuhan Hubei China

This paper deals with the problems of robust stochastic stabilization and H-infinity control for Markovian jump nonlinear singular systems with Wiener process via a fuzzy-control approach. The Takagi-Sugeno (T-S) fuzzy model is employed to represent a nonlinear singular system. The purpose of the robust stochastic stabilization problem is to design a state feedback fuzzy controller such that the closed-loop fuzzy system is robustly stochastically stable for all admissible uncertainties. In the robust H-infinity control problem, in addition to the stochastic stability requirement, a prescribed performance is required to be achieved. Linear matrix inequality (LMI) sufficient conditions are developed to solve these problems, respectively. The expressions of desired state feedback fuzzy controllers are given. Finally, a numerical simulation is given to illustrate the effectiveness of the proposed method.

关键词： Fuzzy control H-infinity control Singular systems Stochastic stability Linear matrix inequality (LMI)

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Radiomics model based on computed tomography images for prediction of radiation-induced optic neuropathy following radiotherapy of brain and head and neck tumors

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Heliyon 2025年第1期11卷 e41409页

作者： Nafchi, Elham Raiesi Fadavi, Pedram Amiri, Sepideh Cheraghi, Susan Garousi, Maryam Nabavi, Mansoureh Daneshi, Iman Gomar, Marzieh Molaie, Malihe Nouraeinejad, Ali Department of Radiation Sciences Faculty of Allied Medicine Iran University of Medical Sciences Tehran Iran Department of Radiation Oncology School of Medicine Iran University of Medical Science Tehran Iran Department of Information Technology Faculty of Electrical and Computer Engineering University of Tehran Tehran Iran Radiation Biology Research Center Iran University of Medical Sciences Tehran Iran Radiation Oncology Research Center (RORC) Cancer Institute Tehran University of Medical Sciences Tehran Iran Department of Clinical Oncology Haft-e-Tir Hospital Iran University of Medical Science Tehran Iran Control and Intelligent Processing Center of Excellence School of Electrical and Computer Engineering College of Engineering University of Tehran Tehran Iran Department of Optometry and Vision Science School of Rehabilitation Tehran University of Medical Science Tehran Iran

Purpose: We aimed to build a machine learning-based model to predict radiation-induced optic neuropathy in patients who had treated head and neck cancers with radiotherapy. Materials and methods: To measure radiation-induced optic neuropathy, the visual evoked potential values were obtained in both case and control groups and compared. Radiomics features were extracted from the area segmented which included the right and left optic nerves and chiasm. We integrated CT image features with dosimetric and clinical data subsequently, ranked 5 supervised ML models Bernoulli Naive Bayes, Decision Tree, Gradient Boosting Decision Trees, K-Nearest Neighbor, and Random Forest on 4 input datasets to predict radiation-induced visual complications classifiers by implementing 5-fold cross-validation. The F1 score, accuracy, sensitivity, specificity, and area under the ROC curve were compared to access prediction capability. Results: radiation-induced optic neuropathy affected 31 % of the patients. 856 radiomic characteristics were extracted and selected from each segmented area. Decision Tree and Random Forest with the highest AUC (97 % and 95 % respectively) among the five classifiers were the most powerful algorithms to predict radiation-induced optic neuropathy. Chiasm with higher sensitivity and precision was able to predict radiation-induced optic neuropathy better than right or left optic nerve or combination of all radiomic features. Conclusion: We found that combination of radiomic, dosimetric, and clinical factors can predict radiation-induced optic neuropathy after radiation treatment with high accuracy. To acquire more reliable results, it is recommended to conduct visual evoked potential tests before and after radiation therapy, with multiple follow-up courses and more patients. © 2024 The Authors

关键词： Computed tomography Machine learning Radiation-induced optic neuropathy Radiomics Visual evoked potential

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MIMO Scheduling Effectiveness Analysis for Bursty Data Service from View of QoE

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Chinese Journal of Electronics 2017年第5期26卷 1079-1085页

作者： CHEN Lei JIANG Dingde BAO Rong XIONG Jiping LIU Fuqiang BEI Lulu Jiangsu Province Key Laboratory of Intelligent Industry Control Technology Xuzhou University of Technology School of Computer Science and Engineering Northeastern University College of Mathematics Physics and Information EngineeringZhejiang Normal University College of Electronics and Information Engineering Tongji University

In the user selection phrase of the conventional Multiple-input-multiple-output(MIMO) scheduling schemes,the frequent user exchange deteriorates the Quality of user experience(Qo E) of the bursty data *** the channel vector orthogonalization computation results in a high time *** address these problems,we propose an inertial scheduling policy to reduce the number of noneffective user exchange,and substitute self-organization policy for channel vector orthogonalization computation to reduce computational *** relationship between the scheduling effectiveness and the inertia of objective function is observed in the *** simulation results show that the inertial scheduling policy effectively reduce the number of potential noneffective scheduling which is inversely proportional to the Mean opinion score(MOS)that quantifies the Qo *** proposed scheduling scheme provides significant improvement in Qo E performance in the *** the proposed scheduling scheme does not consider the channel vector orthogonalization in the user selection phrase,its throughput approaches the level of the throughput-oriented scheme because of its selforganization scheduling policy.

关键词： Bursty data service Multiple-inputmultiple-output(MIMO) Quality of user experience(QoE) Time perception

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Developing an Identity Recognition Low-cost Home Service Robot Based on Turtlebot and ROS 29

Developing an Identity Recognition Low-cost Home Service Rob...

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第29届中国控制与决策会议

作者： Chengguang Xu Wenyu Li Jeffrey Too Chuan TAN Zengqiang Chen Han Zhang Feng Duan College of Computer and Control Engineering Nankai University Institute of Industrial Science University of Tokyo

ISBN: (纸本)9781509046584

Aging population and disabled assistance have become serious social problems these years. However, it is impossible to make sure that every old people has a caregiver. Therefore, the home service robot is a good method to mitigate these issues. Although current robotic technology is mature, service robots with advanced functions are very expensive. In this paper, we developed an identity recognition low-cost home service robot based on Turtlebot and Robot Operating System(ROS). In order to verify the performance of the service robot, we designed a series of experiments in a simulated home environment. The average successful rates of the designed experiments were all above 90%. The results confirmed that the low-cost service robot satisfied our design target.

关键词： Aging population Disabled assistance Home service robot Low-cost

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High Speed Machining for Linear Paths Blended with G3 Continuous Pythagorean-Hodograph Curves

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Journal of Systems science & Complexity 2022年第4期35卷 1586-1607页

作者： ZHAO Kai LI Shurong College of Control Science and Engineering China University of Petroleum(East China)Qingdao266580China College of Computer Science and Information Engineering Anyang Institute of TechnologyAnyang455000China School of Artificial Intelligence Beijing University of Posts and TelecommunicationsBeijing100876China

Previously,many studies have illustrated corner blend problem with different parameter *** a few of them take a Pythagorean-hodograph(PH)curve as the transition arc,let alone corresponding real-time interpolation *** this paper,an integrated corner-transition mixing-interpolation-based scheme(ICMS)is proposed,considering transition error and machine tool ***,the ICMS smooths the sharp corners in a linear path through blending the linear path with G3 continuous PH transition *** obtain optimal PH transition curves globally,the problem of corner smoothing is formulated as an optimization problem with *** order to improve optimization efficiency,the transition error constraint is deduced analytically,so is the curvature extreme of each transition *** being blended with PH transition curves,a linear path has become a blend ***,the ICMS adopts a novel mixed interpolator to process this kind of blend curves by considering machine tool *** mixed interpolator can not only implement jerk-limited feedrate scheduling with critical points detection,but also realize self-switching of two interpolation ***,two patterns are machined with a carving platform based on *** l results show the effectiveness of ICMS.

关键词： Bézier control polygon corner transition jerk-limited scheduling mixed interpolation pythagorean-hodograph curve

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XML privacy preserving model based on dynamic context

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International Journal of Performability engineering 2018年第12期14卷 3206-3219页

作者： Wang, Meijuan Huang, Song Zheng, Changyou Li, Hui College of Computer Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing210016 China Command and Control Engineering College Army Engineering University of PLA Nanjing210007 China

The development of cloud computing has brought about rapid changes in the data application environment. The contradiction between the availability of data fusion and privacy protection is increasing. Traditional information security focuses on hiding attributes, while big data privacy protection pays more attention to access control and data using methods. As a semi-structured representation model, XML data is an ideal carrier for heterogeneous data exchange and unstructured data storage. This paper deeply studies several problems involved in user’s individual access process for XML data privacy preserving, and proposes prior knowledge as dynamic context. Based on the innovative privacy bipartite graph and the XML document semantic encoding, we propose the XML data privacy preserving model DCPPM and the algorithm KCQ to resist reasoning attack. The scheme to preventive response of the real-time inference attack in the actual operation process is realized. Finally, the example verification and experimental data show that the proposed model can effectively protect the safe use of private data and sensitive data in real time, which has certain theoretical and practical significance. © 2018 Totem Publisher, Inc. All rights reserved.

关键词： XML

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Visual Simulation of Multiple Fluids in computer Graphics： A State-of-the-Art Report

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Journal of computer science & Technology 2018年第3期33卷 431-451页

作者： Bo Ren Xu-Yun Yang Ming C. Lin Nils Thuerey Matthias Teschner Chenfeng Li College of Computer and Control Engineering Nankai University Tianjin 300071 China Department of Computer Science University of Maryland College Park MD 20742 U.S.A Department of Informatics Technical University of Munich Munich 80333 Germany Department of Computer Science University of Freiburg Freiburg 79098 Germany College of Engineering Swansea University Swansea SA28PP U.K.

Realistic animation of various interactions between multiple fluids, possibly undergoing phase change, is a challenging task in computer graphics. The visual scope of multi-phase multi-fluid phenomena covers complex tangled surface structures and rich color variations, which can greatly enhance visual effect in graphics applications. Describing such phenomena requires more complex models to handle challenges involving the calculation of interactions, dynamics and spatial distribution of multiple phases, which are often involved and hard to obtain real-time performance. Recently, a diverse set of algorithms have been introduced to implement the complex multi-fluid phenomena based on the governing physical laws and novel discretization methods to accelerate the overall computation while ensuring numerical stability. By sorting through the target phenomena of recent research in the broad subject of multiple fluids, this state-of-the-art report summarizes recent advances on multi-fluid simulation in computer graphics.

关键词： physical simulation multiple fluids computer graphics

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Formation control for Nonlinear Multi-agent Systems with Linear Extended State Observer

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IEEE/CAA Journal of Automatica Sinica 2014年第2期1卷 171-179页

作者： Wen Qin Zhongxin Liu Zengqiang Chen College of Computer and Control Engineering Nankai University Tianjin Key Laboratory of Intelligent Robotics Nankai University College of Science Civil Aviation University of China

This paper investigates the formation control problem for nonlinear multi-agent systems with a virtual leader. A distributed formation control strategy based on linear extended state observer(LESO) is proposed under the hypothesis that velocity of the agent s neighbors could not be measured. Some sufficient conditions are established to ensure that the nonlinear multi-agent systems form a predefined formation with switching topology when the nonlinear function is known. Moreover, the tracking errors are bounded with external disturbance. Lastly,a numerical example with different scenarios is presented to demonstrate the validity of the obtained results.

关键词： Observers Multi-agent systems Uncertainty Switches Topology

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Modeling and Reachability Analysis of A Class of Petri Nets via Semi-tensor Product of Matrices 34

Modeling and Reachability Analysis of A Class of Petri Nets ...

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第三十四届中国控制会议

作者： HAN Xiaoguang CHEN Zengqiang ZHANG Kuize LIU Zhongxin ZHANG Qing College of Computer and Control Engineering Nankai University College of Science Civil Aviation University of China College of Automation Harbin Engineering University

ISBN: (纸本)9781467374439

This paper investigates the matrix expression of state equation and reachability of a class of Petri nets(PNs) by using the semi-tensor product of matrices(STP). First, we get the formula for the number of states of the PNs based on the combinatorial mathematics method. The states and transitions of the PNs are expressed as vector forms, respectively, then the state equation of the PNs is established by using STP. Second, the transition-state adjacency matrix(TSAM) of the PNs is proposed, several necessary and sufficient conditions are obtained for the reachability of the PNs by using this state equation and TSAM. An algorithm is also designed to find all the firing sequences of any two reachable states. Finally, an example is presented to illustrate the theoretical results in this paper and shows that the new results are very effective in investigating the reachability of the PNs.

关键词： Petri nets,Semi-tensor product,Reachability,Transition-state transfer matrix,Transition-state adjacency matrix

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