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Journal of Applied Mathematics and Physics 2022年第9期10卷 2698-2707页

作者： Abdoulaye Zongo Daouda Konane Frédéric Ouattara Laboratoire de Recherche en énergétique et Météorologie de l’Espace (LAREME) Unités de Formations et de Recherches en Sciences et Technologies (UFR-ST) Université Norbert Zongo Koudougou Burkina Faso Laboratoire de Matériaux et Environnement (LAME) Université Joseph KI-ZERBO Ouagadougou Burkina Faso

Residential photovoltaic (PV) systems connected to the grid are used for self-consumption. Any surplus production is fed into the grid and contributes to improving the voltage. Several techniques are developed to model their connection. However, studies on methods of injecting energy production into the Low Voltage (LV) network are nowadays a problem. This paper proposes a mathematical model to determine the current to be injected and calculate each node’s voltage. The current equation is a recurrence relation with an initial condition. This initial condition is for the case of a single PV system connected to the LV grid. The equation can also be written in matrix form. Similarly, the voltage solution is a recurrence relation. It also has an initial condition for the first node. Both mathematical formulae with the proposed initial conditions are consistent and can be used for the determination of the current and voltage of the different nodes in the grid.

关键词： Residential PV System Low Voltage Grid node Mathematical Model Electric Current

An efficient algorithm for optimal allocation of wavelength converters in wavelength routing optical network

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Chinese Optics Letters 2004年第8期2卷 449-452页

作者：李蔚何军李源刘德明黄德修 Department of Optoelectronic Engineering Huazhong University of Science and Technology Wuhan 430074 Department of Computer Science Central China Normal University Wuhan 430070 Department of Optoelectronic Engineering Huazhong University of Science and Technology Wuhan 430074n a wavelength routing optical network (WRON) the optimal allocation of wavelength converters (WCs) is very important to minimize the number of WCs enhance the fiber utilization reduce the blocking probability etc.. In this paper a novel simplified network model with shared WCs has been proposed. An effective algorithm for optimal allocation of shared WCs has been presented by using a revised Dijkstra algorithm and genetic algorithm (GA). The effectiveness of the revised algorithm was verified through the simulation on Nature and Science Foundation (NSF) net of USA. This revised algorithm can achieve blocking probability 36% less than the algorithm in previous work and the calculating time of the minimum blocking probability can be reduced dramatically.

In a wavelength routing optical network (WRON), the optimal allocation of wavelength converters (WCs) is very important to minimize the number of WCs, enhance the fiber utilization, reduce the blocking probability, etc.. In this paper, a novel simplified network model with shared WCs has been proposed. An effective algorithm for optimal allocation of shared WCs has been presented by using a revised Dijkstra algorithm and genetic algorithm (GA). The effectiveness of the revised algorithm was verified through the simulation on Nature and Science Foundation (NSF) net of USA. This revised algorithm can achieve blocking probability 36% less than the algorithm in previous work, and the calculating time of the minimum blocking probability can be reduced dramatically.

关键词： node link

Reassembly of the axon initial segment and nodes of Ranvier in regenerated axons of the central nervous system

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Neural Regeneration Research 2017年第8期12卷 1276-1277页

作者： Miguel A.Marin Matthew N.Rasband Department of Neuroscience Baylor College of Medicine HoustonTX USA Department of Neurology David Geffen Schoolof Medicine University of California Los Angeles Los Angeles CAUSA

Myelinated axons of the peripheral and central nervous system（PNS＆CNS）are divided into molecularly distinct excitable domains,including the axon initial segment（AIS）and nodes of Ranvier.The AIS is composed of a dense network of cytoskeletal proteins,cell adhesion molecules,and voltage gated ion channels and is located at the proximal most region of the axon（Koleand Stuart, 2012）.

关键词： node CPT AMP Reassembly of the axon initial segment and nodes of Ranvier in regenerated axons of the central nervous system AIS RGCs

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A Fuzzy Proof Theory

Journal of Computer Science & Technology 1990年第1期5卷 92-96页

作者：刘东波李德毅 The Institute of China Electronic System Engineering Company

Based on the first order predicate logic, in this paper, we present a new approach to generalizing the syn- tax of ordinary Horn clause rules to establish a fuzzy proof theory. First of all, each Horn clause rule is associ- ated with a numerical implication strength f. Therefore we obtain f-Horn clause rules. Secondly, Herbrand in- terpretations can be generalized to fuzzy subsets of the Herbrand base in the sense of Zadeh. As a result the proof theory for Horn clause rules can be developed in much the same way for f-Horm clause rules.

关键词： node A Fuzzy Proof Theory tree

Structures of an asymmetrically coupled double-well superlattice by double-crystal X-ray diffraction

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Science China Mathematics 1997年第9期40卷 1004-1008页

作者：马文全庄岩王玉田江德生 National Research Center for Optoelectronic Technology Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China

An asymmetrically coupled ( GaAs/AlAs/GaAs/AlAs)/GaAs(001) double-well supperlattice isstudied by HRDCD (high resolution double-crystal X-ray diffractometry).The intensity of satellite peaks is modulated by wave packet of different sublayers.In the course of simulation,the satellite peaks in the vicinity of the node points of wave packet are very informative for precise determination of sublayer thickness and for improving accuracy.

关键词： superlattice simulation wave pocket method node point.

A new prediction method at the edge of optical burst switching network

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Chinese Optics Letters 2005年第4期3卷 199-201页

作者：隋志成曾庆济肖石林 State Key Lab of Advanced Optical Communication Systems and NetworksShanghai Jiao Tong University Shanghai 200030

To achieve lower assembly delay at optical burst switching edge node, this paper proposes an approach called current weight length prediction (CWLP) to improve existing estimate mechanism in burst assembly. CWLP method takes into account the arrived traffic in prediction time adequately. A parameter 'weight' is introduced to make a dynamic tradeoff between the current and past traffic under different offset time. Simulation results show that CWLP can achieve a significant improvement in terms of traffic estimation in various offset time and offered load.

关键词： SNR time A new prediction method at the edge of optical burst switching network length node CLP OBS

A Scalable Key Management Scheme for Secure Multicasting over Bluetooth Scatternets

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China Communications 2008年第2期5卷 25-33页

作者： Subir Biswas Syed Rehan Afzal Jong-bin Koh Mustafa Hasan Gunhee Lee Dong-kyoo Kim Graduate School of Information and Communication Ajou University

Secure multicasting is one of the major requirementsfor today’s communication arena.And for any kindof secure communication,a key-distribution schemeis the most sensible part.Being a highly promising,low-cost,and emerging wireless technology,Bluetooth has key distribution supports for securemulticasting over its unit one-hop network,piconet.Bluetooth core specification[1]defines basic securityprotocols for key generation,encryption,andauthentication for intra-piconet security.However,not much attention has been paid so far on securingmulticasting over the Bluetooth Scatternet;nevertheless,multicasting is quite a sensible aspectof modern communication arena.Here in this paper,we extend the piconets key distribution scheme topresent a new key management scheme for securemulticasting over Bluetooth Scatternets.Our keymanagement scheme is compatible to the currentBluetooth architecture design as we rely onBluetooth’s existing security algorithms to proposeour resolution.

关键词： Bluetooth Piconet Scattemet Master node Master key

DISTRIBUTED OPTIMAL LOCAL DOUBLE LOOP NETWORK

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Acta Mathematica Scientia 1992年第3期12卷 248-259页

作者：李腊元 Wuhan Univ. of Water Trans. Eng. Wuhan 430000 China

A distibuted optimal local double loop(DOLDL) network is presented. Emphasis is laid on the topology and distributed routing algorithms for the DOLDL. On the basis of building an abstract model, a set of definitions and theorems are described and proved. An algorithm which can optimize the double loop networks is presented. The optimal values of the topologic parameters for the DOLDL have been obtained by the algorithm, and these numerical results are analyzed. The study shows that the bounds of the optimal diameter (d) and average hop distance (a) for this class of networks are [square-root 3N -2] less-than-or-equal-to d less-than-or-equal-to [square-root 3N+1] and (5N/9(N-1)) (square-root 3N-1.8) nodes in the network. (3 less-than-or-equal-to N less-than-or-equal-to 10(4)). A class of the distributed routing algorithms for the DOLDL and the implementation procedure of an adaptive fault-tolerant algorithm are proposed. The correctness of the algorithm has been also verified by simulating.

关键词： node DISTRIBUTED OPTIMAL LOCAL DOUBLE LOOP NETWORK link

Incentive Schemes of nodes for Ad Hoc and Multi-hop Cellular Networks

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China Communications 2007年第4期4卷 79-88页

作者： Wang Kun Wu Meng Nanjing Univ Posts & Telecommun Inst Commun & Informat Engn Nanjing 210003 Peoples R China

nodes cooperation is a significant prerequisite for the realization of the relaying Ad Hoc.While with the development of multi-hop cellular networks, how to stimulate intermediate nodes to do the packet-forwarding deserves more concerning.At present research,the incentive schemes in pure Ad Hoc and multi-hop cellular networks are analyzed and compared to classify the strengths and drawbacks of each scheme.We explain in particular what the key issues are to implement incentive schemes for cooperation. Finally,an incentive scheme based on integration of reputation and charging systems is proposed not only to block the existence of selfish nodes,but to satisfy the rational requirement of nodes.

关键词： node cooperation incentive scheme in-depth summary multi-hop cellular networks Ad Hoc security

Network security protection technology for a cloud energy storage network controller

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Global Energy Interconnection 2020年第1期3卷 86-98页

作者： Tao Yan Jialiang Liu Qianqian Niu Jizhong Chen Shaohua Xu Meng Niu China Electric Power Research Institute Haidian DistrictBeijing 100192P.R.China Beijing Jiaotong University Haidian DistrictBeijing 100044P.R.China

As part of the ongoing information revolution,smart power grid technology has become a key focus area for research into power systems.Intelligent electrical appliances are now an important component of power systems,providing a smart power grid with increased control,stability,and safety.Based on the secure communication requirements of cloud energy storage systems,this paper presents the design and development of a node controller for a cloud energy storage network.The function division and system deployment processes were carried out to ensure the security of the communication network used for the cloud energy storage system.Safety protection measures were proposed according to the demands of the communication network,allowing the system to run safely and stably.Finally,the effectiveness of the system was verified through a client-side distributed energy storage demonstration project in Suzhou,China.The system was observed to operate safely and stably,demonstrating good peak-clipping and valley filling effects,and improving the system load characteristics.

关键词： Cloud energy storage system node controller Network security Smart grid Distributed energy storage