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Frontiers in Energy 2023年第2期17卷 266-285页

作者： yi zuo Xingang ZHAO School of Economics and Management North China Electric Power UniversityBeijing 102206China Beijing Key Laboratory of New Energy and Low-Carbon Development North China Electric Power UniversityBeijing 102206China

Tradable green certificate(TGC)scheme promotes the development of renewable energy industry which currently has a dual effect on economy and *** market efficiency is reflected in stimulating renewable energy investment,but may be reduced by the herding behavior of market *** paper proposes and simulates an artificial TGC market model which contains heterogeneous agents,communication structure,and regulatory rules to explore the characteristics of herding behavior and its effects on market *** results show that the evolution of herding behavior reduces information asymmetry and improves market efficiency,especially when the borrowing is *** addition,the fundamental strategy is diffused by herding evolution,but TGC market efficiency may be remarkably reduced by herding with borrowing ***,the herding behavior may evolve to an equilibrium where the revenue of market players is comparable,thus the fairness in TGC market is improved.

关键词： tradable green certificate herding behavior evolution heterogeneous agent model complex network

Robust fuzzy control of Takagi-Sugeno fuzzy neural networks with discontinuous activation functions and time delays

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Journal of Systems Engineering and Electronics 2011年第3期22卷 473-481页

作者： Yaonan Wang Xiru Wu yi zuo College of Electrical and Information Engineering Hunan UniversityChangsha 410082P.R.China School of Energy and Power Engineering Changsha University of Science and TechnologyChangsha 410004P.R.China

The problem of global robust asymptotical stability for a class of Takagi-Sugeno fuzzy neural networks（TSFNN） with discontinuous activation functions and time delays is investigated by using Lyapunov stability *** on linear matrix inequalities（LMIs）,we originally propose robust fuzzy control to guarantee the global robust asymptotical stability of *** with the existing literature,this paper removes the assumptions on the neuron activations such as Lipschitz conditions,bounded,monotonic increasing property or the right-limit value is bigger than the left one at the discontinuous ***,the results are more general and ***,two numerical examples are given to show the effectiveness of the proposed stability results.

关键词： delayed neural network global robust asymptotical stability discontinuous neuron activation linear matrix inequality(LMI) Takagi-sugeno(T-S) fuzzy model.

Dek42 encodes an RNA-binding protein that affects alternative pre-m RNA splicing and maize kernel development

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Journal of Integrative Plant Biology 2019年第6期61卷 728-748页

作者： yi zuo Fan Feng Weiwei Qi Rentao Song State Key Laboratory of Plant Physiology and Biochemistry National Maize Improvement CenterBeijing Key Laboratory of Crop Genetic ImprovementJoint International Research Laboratory of Crop Molecular BreedingCollege of Agronomy and BiotechnologyChina Agricultural UniversityBeijing 100193China Shanghai Key Laboratory of Bio-Energy Crops Plant Science CenterSchool of Life SciencesShanghai UniversityShanghai 200444China

RNA-binding proteins (RBPs) play an important role in post-transcriptional gene regulation. However, the functions of RBPs in plants remain poorly understood. Maize kernel mutant dek42 has small defective kernels and lethal seedlings. Dek42 was cloned by Mutator tag isolation and further confirmed by an independent mutant allele and clustered regularly interspaced short palindromic repeats (CRISPR)-CRISPR-associated protein 9 materials. Dek42 encodes an RRM_RBM48 type RNA-binding protein that localizes to the nucleus. Dek42 is constitutively expressed in various maize tissues. The dek42 mutation caused a significant reduction in the accumulation of DEK42 protein in mutant kernels. RNA-seq analysis showed that the dek42 mutation significantly disturbed the expression of thousands of genes during maize kernel development. Sequence analysis also showed that the dek42 mutation significantly changed alternative splicing in expressed genes, which were especially enriched for the U12-type intron-retained type. Yeast two-hybrid screening identified SF3a1 as a DEK42-interacting protein. DEK42 also interacts with the spliceosome component U1-70K. These results suggested that DEK42 participates in the regulation of pre-messenger RNA splicing through its interaction with other spliceosome components. This study showed the function of a newly identified RBP and provided insights into alternative splicing regulation during maize kernel development.

关键词： Dek42 encodes an RNA-binding protein that affects alternative pre-mRNA splicing and maize kernel development^FA Dek42 encodes

Mathematical Model and Its Application of Radial Effective Thermal Conductivity for Coil Heat Transfer in HPH Furnace

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Journal of Thermal Science 2002年第2期11卷 134-137页

作者： Wenfei Wu Fan Yu Xinxin Zhang yi zuo Univ Sci & Technol Beijing Sch Mech Engn Dept Thermal Engn Beijing 100083 Peoples R China

Temperature uniformity of steel coils in High Performance Hydrogen bell-type annealing furnace has a significant effect on their quality and production. The hot rolled coil can be considered as a periodically laminated material composed of steel layers and interface layers in radial direction. A new formula for the radial effective thermal conductivity has been proposed, which is based on surface characteristic, strip thickness and compressive stress of the rolled coil. Furthermore, it has been used to develop a heat transfer mathematical model for steel coils in the HPH furnace. The calculated annealing curves using this mathematical model are in good agreement with the experimental data.

关键词： HPH furnace thermal conductivity heat transfer mathematical model.

The Limit of Finite Sample Breakdown Point of Tukey’s Halfspace Median for General Data

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Acta Mathematica Sinica,English Series 2018年第9期34卷 1403-1416页

作者： Xiao Hui LIU Shi Hua LUO yi Jun zuo School of Statistics Jiangxi University of Finance and Economics Nanchang 330013 P. R. China Research Center of Applied Statistics Jiangxi University of Finance and Economics Nanchang 330013 P. R. China Department of Statistics and Probability Michigan State University East Lansing MI 48823 USA

Under special conditions on data set and underlying distribution, the limit of finite sample breakdown point of Tukey＇s halfspace median （1） has been obtained in the literature. In this paper, we establish the result under weaker assumptions imposed on underlying distribution （weak smoothness） and on data set （not necessary in general position）. The refined representation of Tukey＇s sample depth regions for data set not necessary in general position is also obtained, as a by-product of our derivation.

关键词： Tukey's halfspace median limit of finite sample breakdown point smooth condition,halfspace symmetry

A memetic algorithm based on hyper-heuristics for examination timetabling problems

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International Journal of Intelligent Computing and Cybernetics 2015年第2期8卷 139-151页

作者： Yu Lei Maoguo Gong Licheng Jiao yi zuo Key Laboratory of Intelligent Perception and Image Understanding of Ministry of Education International Research Center for Intelligent Perception and ComputationXidian UniversityXi’anChina

Purpose–The examination timetabling problem is an NP-hard problem.A large number of approaches for this problem are developed to find more appropriate search ***-heuristic is a kind of representative *** hyper-heuristic,the high-level search is executed to construct heuristic lists by traditional methods(such as Tabu search,variable neighborhoods and so on).The purpose of this paper is to apply the evolutionary strategy instead of traditional methods for high-level search to improve the capability of global ***/methodology/approach–This paper combines hyper-heuristic with evolutionary strategy to solve examination timetabling ***,four graph coloring heuristics are employed to construct heuristic *** the evolutionary algorithm framework,the iterative initialization is utilized to improve the number of feasible solutions in the population;meanwhile,the crossover and mutation operators are applied to find potential heuristic lists in the heuristic space(high-level search).At last,two local search methods are combined to optimize the feasible solutions in the solution space(low-level search).Findings–Experimental results demonstrate that the proposed approach obtains competitive results and outperforms the compared approaches on some benchmark ***/value–The contribution of this paper is the development of a framework which combines evolutionary algorithm and hyper-heuristic for examination timetabling problems.

关键词： Evolutionary computation Examination timetabling problem Hyper-heuristic Memetic algorithm

600-MW_(e)high-temperature gas-cooled reactor nuclear power plant HTR-PM600

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Nuclear Science and Techniques 2022年第8期33卷 69-76页

作者： zuo-yi Zhang Yu-Jie Dong Qi Shi Fu Li Hai-Tao Wang Institute of Nuclear and New Energy Technology of Tsinghua University Collaborative Innovation Center of Advanced Nuclear Energy TechnologyThe Key Laboratory of Advanced Reactor Engineering and SafetyMinistry of EducationBeijing 100084China Chinergy Co.Ltd Beijing 100193China

The HTR-PM600 high-temperature gas-cooled reactor nuclear power plant is based on the technology of the high-temperature gas-cooled reactor pebble-bed module(HTR-PM)demonstration *** utilizes proven HTR-PM reactor and steam generator modules with a thermal power of 250 MW_(th)and power generation of approximately 100 MW_(e)per *** modules in parallel,connected to a steam turbine,form a 600-MW_(e)nuclear power *** addition,its system configuration in the nuclear island is identical to that of the HTR-PM in which the technical risks are *** this principle,the HTR-PM600 achieves the same level of inherent safety as the *** concept of a ventilated lowpressure containment(VLPC)is unchanged;however,a large circular VLPC accommodating all six reactor modules is adopted rather than the previous small-cavity-type VLPC,which contains only one module,as defined for the *** layout of the nuclear island and its associated systems refer to single-unit pressurized water reactor(PWR)*** this layout,the HTR-PM600achieves a volume size of the nuclear island that is comparable to a domestic PWR of the same power *** will be a GenerationⅣnuclear energy technology that is economically competitive.

关键词： High-temperature gas-cooled reactor Module HTR-PM600 GenerationⅣ

Mycoplasma lipoproteins and Toll-like receptors

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2009年第1期10卷 67-76页

作者： Ling-ling zuo yi-mou WU Xiao-xing YOU Institute of Pathogenic Biology School of Medicine University of South China Hengyang 421001 China

Mycoplasmas, the smallest free-living, self-replicating bacteria with diameters of 200 to 800 nm, have been reported to be associated with human diseases. It is well known that the mycoplasma lipoprotein/peptide is able to modulate the host immune system, whose N-terminal structure is an important factor in inducing immunity and distinguishing Toll-like receptors (TLRs). However, there is still no clear elucidation about the pathogenic mechanism of mycoplasma lipoprotein/peptide and the signaling pathway. Some researchers have focused on understanding the structures of these proteins and the relationships between their structure and biological function. This review provides an update on the research in this field.

关键词： Mycoplasma lipoproteins/lipopeptides Toll-like receptors Signal pathway Mycoplasmal pathogenic mechanism

Construction and Properties of Simvastatin and Calcium Phosphate Dual-Loaded Coaxial Fibrous Membranes with Osteogenic and Angiogenic Functions

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Journal of Bionic Engineering 2022年第6期19卷 1645-1657页

作者： Chang Liu Dan Deng Jing Gao Shue Jin yi zuo Yubao Li Jidong Li Research Center for Nano-Biomaterials Analytical&Testing CenterSichuan UniversityChengdu610064China

The ideal Guided Bone Regeneration(GBR)membrane is required to have good biocompatibility,space maintenance ability,appropriate degradation rate,and preferably can guide the regeneration of vascularized bone *** this study,Simvastatin(SIM)and calcium Phosphate(CaP)were encapsulated in a Polycaprolactone(PCL)/Chitosan(CS)core-shell structural fibrous membranes via coaxial electrospinning *** results showed that loaded SIM in the core of the core-shell structure fibrous membranes could sustainably release the drug for more than two months and upregulate the angiogenic marker of Bone Mesenchymal Stem Cells(BMSCs).Adding a certain amount of CaP to the shell layer provided more sites for the mineralization and synergistic with SIM to promote osteogenic differentiation of BMSCs in *** intramuscular implantation experiments in rabbits suggested a normal early inflammation and enhanced vascularization induced by the SIM-loaded fibrous *** study proposed an effective strategy to prepare a dual-loaded core-shell fibrous membrane for guided vascularized bone tissue regeneration.

关键词： Simvastatin Calcium phosphate Coaxial electrospinning Vascularization Guided Bone Regeneration

Active fault-tolerant tracking control of a quadrotor with model uncertainties and actuator faults

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Frontiers of Information Technology & Electronic Engineering 2019年第1期20卷 95-106页

作者： Yu-jiang ZHONG Zhi-xiang LIU You-min ZHANG Wei ZHANG Jun-yi zuo School of Aeronautics Northwestern Polytechnical University Department of Mechanical Industrial and Aerospace Engineering Concordia University

This paper presents a reliable active fault-tolerant tracking control system(AFTTCS) for actuator faults in a quadrotor unmanned aerial vehicle(QUAV). The proposed AFTTCS is designed based on a well-known model reference adaptive control(MRAC) framework that guarantees the global asymptotic stability of a QUAV system. To mitigate the negative impacts of model uncertainties and enhance system robustness, a radial basis function neural network is incorporated into the MRAC scheme for adaptively identifying the model uncertainties online and modifying the reference model. Meanwhile, actuator dynamics are considered to avoid undesirable performance degradation. Furthermore, a fault detection and diagnosis estimator is constructed to diagnose lossof-control-effectiveness faults in actuators. Based on the fault information, a fault compensation term is added to the control law to compensate for the adverse effects of actuator faults. Simulation results show that the proposed AFTTCS enables the QUAV to track the desired reference commands in the absence/presence of actuator faults with satisfactory performance.

关键词： Model reference adaptive control Neural network Quadrotor Fault-tolerant control Fault detection and diagnosis