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Journal of Systems Engineering and Electronics 2019年第4期30卷 783-791页

作者： zhang kejun PENG Guohua School of Natural and Applied Sciences Northwestern Polytechnical UniversityXi’an 710129China School of Math and Physical Sciences Xuzhou Institute of TechnologyXuzhou 221018China

For a class of fractional-order linear continuous-time switched systems specified by an arbitrary switching sequence,the performance of PDα-type fractional-order iterative learning control(FOILC)is discussed in the sense of L^p *** the systems are disturbed by bounded external noises,robustness of the PDα-type algorithm is firstly analyzed in the iteration domain by taking advantage of the generalized Young inequality of convolution ***,convergence of the algorithm is discussed for the systems without any external *** results demonstrate that,under some given conditions,both convergence and robustness can be guaranteed during the entire time *** support the correctness of the theory.

关键词： fractional-order switched systems iterative learning control L^p norm

Nanostructured transition metal nitride composites as energy storage material

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Chinese Science Bulletin 2012年第32期57卷 4111-4118页

作者： YUE YanHua HAN PengXian DONG ShanMu zhang kejun zhang ChuanJian SHANG ChaoQun CUI-GuangLei Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 China

There are growing demands for the next generation lithium ion batteries with high energy density as well as high power performance for renewable energy storage and electric vehicles ***,nanoscale materials with outstanding energy storage capability have received considerable attention due to their unique effect caused by the reduced *** review describes some recent developments of our group in research of transition metal nitride nanocomposites in application of energy storage,especially for lithium ion battery and *** strategies of mixed conduction(electron and ion) network with a favorable charge transportation interface in the design of the nanocomposites for such devices are highlighted.

关键词：过渡金属氮化物纳米复合材料储能材料纳米材料锂离子电池高能量密度超级电容器功率性能

Few-shot font style transfer with multiple style encoders

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Science China(Information Sciences) 2022年第6期65卷 83-84页

作者： kejun zhang Rui zhang Yonglin WU Yifei LI Yonggen LING Bolin WANG Lingyun SUN Yingming LI State Key Lab of CAD&CG Zhejiang University School of Software Technology Zhejiang University Robotics X Tencent College of Information Science & Electronic Engineering Zhejiang University

Dear editor,From the sketch to an encapsulated font, text font design is a labor-intensive and time-consuming process that relies heavily on the expertise of designers and usually takes months,even years, for a professional institution. This scenario is particularly prominent for glyph-rich scripts, such as Chinese, where each character is composed of varying numbers of highly complex structured components.

关键词： Font Generation Image-to-Image Translation GANs Multi-task Learning Font Fusion Style Transfer

Research on the Realization Mechanism of and Approach to Ecological Product Valuations

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Contemporary Social Sciences 2021年第2期6卷 111-128页

作者： Li Mingxing zhang kejun Chengdu Institution of New Economic Development Sichuan Academy of Social Sciences

Ecological product is an innovative practice for ecological valuations in China. Due to the influence of historical conditions and development stages in China, research on the realization of ecological valuations has lagged. In the new era, the construction of an ecological civilization guided by the "Two Mountains" theory has been promoted to the national strategic level and is supporting the growth of theoretical research and practical exploration based on the understanding of ecological product values. We want to innovate and improve the system used to realize the value of ecological products by applying the existing research, which focuses on the concept definition of ecological products and their correlation theories. Through systematic expansion and upgrades in this system, the evaluation accuracy of ecological products can be improved, providing valuable references for further practical exploration and promoting an ecological culture in China.

关键词： value of ecological products implementation mechanism ecological civilization construction value reference

Electrochemical investigation on the interaction of benzene sulfonyl 5-fluorouracil derivatives with double-stranded DNA and G-quadruplex DNA

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Science China Chemistry 2012年第6期55卷 1345-1350页

作者： HU Quan zhang kejun JIN HuiLe CHEN XiAn HU MaoLin WANG Shun Nanomaterials and Chemistry Key Laboratory Wenzhou UniversityWenzhou 325035China Department of Pharmacology School of Basic MedicineHangzhou Normal UniversityHangzhou 310036China

The interaction of double-stranded （ds） and G-quadruplex （G4） DNA with sulfonyl 5-fluorouracil derivatives （5-fluoro-l-（arylsulfonyl） pyrimidine-2,4 （1H,3H）-diones） was investigated in this research, in which Au electrodes modified with ds-DNA or G4-DNAs were used as a working electrode. The investigation showed that the binding affinity with G4-DNA was significantly increased when 5-fluorouracil （5-FU） was modified with arylsulfonyl groups. The presence of strong electron-withdrawing groups on benzene sulfonyl 5-FU greatly enhanced the binding selectivity （kG4-DNA/kds-DNA）. Such results provided new insights into the potential connections between the chemical structure of drug candidates and their anticancer activities.

关键词： anti-tumor activity differential pulse voltammetry double-stranded DNA G-quadruplex DNA 5-fluorouracil derivatives

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Visual knowledge guided intelligent generation of Chinese seal carving

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Frontiers of Information Technology & Electronic Engineering 2022年第10期23卷 1479-1493页

作者： kejun zhang Rui zhang Yehang YIN Yifei LI Wenqi WU Lingyun SUN Fei WU Huanghuang DENG Yunhe PAN College of Computer Science and Technology Zhejiang UniversityHangzhou 310027China Alibaba-Zhejiang University Joint Institute of Frontier Technologies Hangzhou 310027China School of Software Technology Zhejiang UniversityHangzhou 310027China

We digitally reproduce the process of resource collaboration,design creation,and visual presentation of Chinese seal-carving *** develop an intelligent seal-carving art-generation system(Zhejiang University Intelligent Seal-Carving System,http://***/seal/;the website of the seal-carving search and layout system is http://***/seal/search_app/)to deal with the difficulty in using a visual knowledge guided computational art *** knowledge base in this study is the Qiushi Seal-Carving Database,which consists of open datasets of images of seal characters and seal *** propose a seal character generation method based on visual knowledge,guided by the database and ***,to create the layout of the seal,we propose a deformation algorithm to adjust the seal characters and calculate layout parameters from the database and knowledge to achieve an intelligent *** results show that this method and system can effectively deal with the difficulties in the generation of seal *** work provides theoretical and applied references for the rebirth and innovation of seal-carving art.

关键词： Seal-carving Intelligent generation Deep learning Parametric modeling Computational art

Suno:potential,prospects,and trends

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Frontiers of Information Technology & Electronic Engineering 2024年第7期25卷 1025-1030页

作者： Jiaxing YU Songruoyao WU Guanting LU Zijin LI Li ZHOU kejun zhang College of Computer Science and Technology Zhejiang UniversityHangzhou 310027China Department of Music Artificial Intelligence and Music Information Technology Central Conservatory of MusicBeijing 100031China School of Arts and Communication China University of Geosciences(Wuhan)Wuhan 430074China Innovation Center of Yangtze River Delta Zhejiang UniversityJiaxing 314100China

Suno has attracted wide attention due to its impressive *** demonstrates technological advancements and opens up new possibilities for music composition,representing a milestone in the development of artificial intelligence(AI)music gen*** this paper,we first introduce the background and summarize the general technical framework of AI music generation,followed by an analysis of Suno’s advantages and ***,we discuss the future trends in Music and AI.

关键词： potential representing artificial

Convergence Analysis of PIβDα-type Fractional-order Iterative Learning Control in the Sense of LP Norm

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Convergence Analysis of PIβDα-type Fractional-order Iterat...

基于分数阶线性系统初态学习的PD^(α)-型迭代学习控制

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作者： kejun zhang Guohua Peng School of Natural and Applied Sciences Northwestern Polytechnical University School of Math and Physical Sciences Xuzhou Institute of Technology

The convergence of PID-type fractional-order iterative learning control(FOILC) is discussed for a class of fractional-order linear time-invariant system in the sense of L ***,by taking advantage of the generalized Young inequality of convolution integral,the sufficient conditions for the monotone convergence of first and second-order PID-type control laws are analyzed in the sense of L norm,and generalizes to the convergence condition of iV-th-order PID-type control *** the convergence speeds of first and second-order PID-type ILC are *** analysis indicates that the convergence is determined not only by the learning gains of control law,but also by the attributes of the system *** simulation results validate the correctness of the theory and the feasibility of the proposed control law.

关键词： Iterative learning control Fractional-order Lp norm Convergence

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西北工业大学学报 2021年第2期39卷 400-406页

作者：刘芬张克军西北工业大学航海学院陕西西安710072 延安大学数学与计算机科学学院陕西延安716000 徐州工程学院数理学院江苏徐州221111

为了消除任意初始状态对系统的影响,针对一类具有任意初始状态的分数阶线性连续系统,提出了一种具有初始状态学习的开环和开闭环PD^(α)-型分数阶迭代学习控制算法。在Lebesgue-p范数的意义下,利用卷积积分的广义Young不等式在迭代域中... 详细信息

为了消除任意初始状态对系统的影响,针对一类具有任意初始状态的分数阶线性连续系统,提出了一种具有初始状态学习的开环和开闭环PD^(α)-型分数阶迭代学习控制算法。在Lebesgue-p范数的意义下,利用卷积积分的广义Young不等式在迭代域中给出具有抗干扰的PD^(α)-型算法收敛的充分条件。实验结果表明,该算法能够保证跟踪误差的收敛性。数值仿真验证了所提算法的有效性和正确性。

关键词：分数阶初始状态学习迭代学习控制 Lebesgue-p范数

具有反馈信息的PD~α-型迭代学习控制律在Lebesgue-p范数意义下的收敛性分析

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西北工业大学学报 2017年第2期35卷 310-315页

作者：张克军彭国华西北工业大学理学院陕西西安710129 徐州工程学院数理学院江苏徐州221018

针对一类分数阶线性时不变系统,提出了具有反馈信息的PD~α-型分数阶迭代学习控制律,在Lebesgue-p范数意义下,利用卷积的推广Young不等式,对控制律单调收敛性进行分析,推导出单调收敛的充分条件。分析表明,具有反馈信息的PD~α-型迭代... 详细信息

针对一类分数阶线性时不变系统,提出了具有反馈信息的PD~α-型分数阶迭代学习控制律,在Lebesgue-p范数意义下,利用卷积的推广Young不等式,对控制律单调收敛性进行分析,推导出单调收敛的充分条件。分析表明,具有反馈信息的PD~α-型迭代学习控制律的收敛性不仅取决于控制律的学习增益,而且依赖于系统自身的属性;同时,若选用适当的反馈增益,可加快迭代学习控制律的收敛速度。仿真实验验证了理论的正确性和控制律的有效性。

关键词：迭代学习控制分数阶 Lebesgue-p范数收敛性