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Research on target node analysis technology in complex network EI Scopus
期刊论文 | 2018 , 21 (5) , 1157-1165 | Journal of Discrete Mathematical Sciences and Cryptography
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Abstract :

A network is composed of many network nodes, so the analysis and evaluation of the target node is of great importance, especially in complex networks. For this purpose, this paper established an analysis model of target nodes for a complex network to study the correlation between the two and explore the searching mechanism of target nodes in the complex network. Besides, the importance and reliability of the target nodes were simulated. The results showed that the analysis of the target nodes had a great effect on the research of the target nodes and played a positive role in the research of the whole complex network. © 2018, © 2018 Taru Publications.

Keyword :

Analysis Analysis and evaluation Analysis models Importance Network node Node Searching mechanism Target nodes

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GB/T 7714 Tian, Runhu , Zhang, Yanbin . Research on target node analysis technology in complex network [J]. | Journal of Discrete Mathematical Sciences and Cryptography , 2018 , 21 (5) : 1157-1165 .
MLA Tian, Runhu 等. "Research on target node analysis technology in complex network" . | Journal of Discrete Mathematical Sciences and Cryptography 21 . 5 (2018) : 1157-1165 .
APA Tian, Runhu , Zhang, Yanbin . Research on target node analysis technology in complex network . | Journal of Discrete Mathematical Sciences and Cryptography , 2018 , 21 (5) , 1157-1165 .
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Development, Demonstration, and Control of a Testbed for Multiterminal HVDC System EI SCIE Scopus
期刊论文 | 2017 , 32 (8) , 6069-6078 | IEEE TRANSACTIONS ON POWER ELECTRONICS | IF: 6.812
WoS CC Cited Count: 20 SCOPUS Cited Count: 9
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Abstract :

This paper presents the development of a scaled four-terminal high-voltage direct current (HVDC) testbed, including hardware structure, communication architecture, and different control schemes. The developed testbed is capable of emulating typical operation scenarios including system start-up, power variation, line contingency, and converter station failure. Some unique scenarios are also developed and demonstrated, such as online control mode transition and station re-commission. In particular, a dc line current control is proposed, through the regulation of a converter station at one terminal. By controlling a dc line current to zero, the transmission line can be opened by using relatively low-cost HVDC disconnects with low current interrupting capability, instead of the more expensive dc circuit breaker. Utilizing the dc line current control, an automatic line current limiting scheme is developed. When a dc line is overloaded, the line current control will be automatically activated to regulate current within the allowable maximum value.

Keyword :

testbed multiterminal HVDC (MTDC) HVDC multiterminal

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GB/T 7714 Li, Yalong , Shi, Xiaojie , Liu, Bo et al. Development, Demonstration, and Control of a Testbed for Multiterminal HVDC System [J]. | IEEE TRANSACTIONS ON POWER ELECTRONICS , 2017 , 32 (8) : 6069-6078 .
MLA Li, Yalong et al. "Development, Demonstration, and Control of a Testbed for Multiterminal HVDC System" . | IEEE TRANSACTIONS ON POWER ELECTRONICS 32 . 8 (2017) : 6069-6078 .
APA Li, Yalong , Shi, Xiaojie , Liu, Bo , Lei, Wanjun , Wang, Fred , Tolbert, Leon M. . Development, Demonstration, and Control of a Testbed for Multiterminal HVDC System . | IEEE TRANSACTIONS ON POWER ELECTRONICS , 2017 , 32 (8) , 6069-6078 .
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The realization of multi agent based online trading systems based on J2EE technology EI SCIE Scopus
期刊论文 | 2016 , 31 (6) , 445-451 | COMPUTER SYSTEMS SCIENCE AND ENGINEERING | IF: 0.348
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Abstract :

With the rapid development of electronic commerce, C2C online auction is rising rapidly. Online auction greatly reduces the cost and time of the organization to participate in the auction and tender bidders. The basic models of online time series search and one-way trading are the time series search problem. A player has one asset for sale and he observes a series of prices sequentially in order to sell the asset in the highest price, i.e., aiming to obtain the best revenue. This paper mainly describes the Spring+ Struts+ Hibernate architecture to realize online trading system based on system not only for the user realizes the brows, buy, and submit orders, purchase and message function, can not only for the company's products and related information is updated, and able to manage product inventory, logistics and orders status.

Keyword :

J2EE Realization database

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GB/T 7714 Tian Run Hu , Zhang Yan Bin , Pa Lixin . The realization of multi agent based online trading systems based on J2EE technology [J]. | COMPUTER SYSTEMS SCIENCE AND ENGINEERING , 2016 , 31 (6) : 445-451 .
MLA Tian Run Hu et al. "The realization of multi agent based online trading systems based on J2EE technology" . | COMPUTER SYSTEMS SCIENCE AND ENGINEERING 31 . 6 (2016) : 445-451 .
APA Tian Run Hu , Zhang Yan Bin , Pa Lixin . The realization of multi agent based online trading systems based on J2EE technology . | COMPUTER SYSTEMS SCIENCE AND ENGINEERING , 2016 , 31 (6) , 445-451 .
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Online Junction Temperature Monitoring Using Turn-Off Delay Time for Silicon Carbide Power Devices EI CPCI-S Scopus
会议论文 | 2016 | IEEE Energy Conversion Congress and Exposition (ECCE)
SCOPUS Cited Count: 9
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Abstract :

Junction temperature is a critical indicator for health condition monitoring of power devices. Concerning the reliability of emerging silicon carbide (SiC) power semiconductors due to immaturity of new material and packaging, junction temperature measurement becomes more significant and challenging, since SiC devices have low on-state resistance, fast switching speed, and high susceptibility to noise and parasitics in circuit implementations. This paper aims at developing a practical and cost-effective approach for online junction temperature monitoring of SiC devices using turn-off delay time as the thermo-sensitive electrical parameter (TSEP). The sensitivity is analyzed for fast switching SiC devices. A gate impedance regulation assist circuit is designed to improve the sensitivity by a factor of 60 and approach hundreds of ps/degrees C in the case study with little penalty of the power conversion performance. Also, an online monitoring system based on three gate assist circuits is developed to monitor the turn-off delay time in real time with the resolution within hundreds of ps. In the end, the micro-controller is capable of "reading" junction temperature during the converter operation with less than 0.5 degrees C measurement error. Two testing platforms for calibration and online junction temperature monitoring are constructed, and experimental results demonstrate the feasibility and accuracy of the proposed approach. Furthermore, the proposed gate assist circuits for sensitivity improvement and high resolution turn-off delay time measurement are transistor based and suitable for chip level integration.

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GB/T 7714 Zhang, Zheyu , Wang, Fred , Costinett, Daniel J. et al. Online Junction Temperature Monitoring Using Turn-Off Delay Time for Silicon Carbide Power Devices [C] . 2016 .
MLA Zhang, Zheyu et al. "Online Junction Temperature Monitoring Using Turn-Off Delay Time for Silicon Carbide Power Devices" . (2016) .
APA Zhang, Zheyu , Wang, Fred , Costinett, Daniel J. , Tolbert, Leon M. , Blalock, Benjamin J. , Wu, Xuanlyu . Online Junction Temperature Monitoring Using Turn-Off Delay Time for Silicon Carbide Power Devices . (2016) .
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Architecture of a Multiple Channel Blood Pressure Signal Transmitting Based on Bluetooth Technology CPCI-S
会议论文 | 2015 , 12 , 789-792 | International Conference on Applied Science and Engineering Innovation (ASEI)
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Abstract :

Recent technological advancements have led to the production of microcontroller with wireless communication functions, which enable the integration of physiological data collection, data processing, and data transmitting. Blood pressure is an important physiological indicator which should be measured continuously in some case. In this article, we bring forward an architecture including pressure measure based on a fiber optic sensor, data transmitting using Bluetooth technology, and data collection using a Bluetooth-Ethernet gateway running protocol process software. Particularly, a control chip CC2540 was used to run the Bluetooth protocol and to make the data transmitting, a module based on W5100 chip was used to realize TCP/IP protocol. The blood pressure data was finally send to a database server through the Ethernet interface, to make further analysis and data mining.

Keyword :

Real-time Measurement Bluetooth CC2540 Blood Pressure

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GB/T 7714 He, Ruirui , Wang, Lina , Du, Jianqiang et al. Architecture of a Multiple Channel Blood Pressure Signal Transmitting Based on Bluetooth Technology [C] . 2015 : 789-792 .
MLA He, Ruirui et al. "Architecture of a Multiple Channel Blood Pressure Signal Transmitting Based on Bluetooth Technology" . (2015) : 789-792 .
APA He, Ruirui , Wang, Lina , Du, Jianqiang , Wu, Xiaoming . Architecture of a Multiple Channel Blood Pressure Signal Transmitting Based on Bluetooth Technology . (2015) : 789-792 .
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基于遗传算法的应急物资分层调度研究 CSCD PKU
期刊论文 | 2015 , (10) , 53-58 | 计算机工程
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Abstract :

针对多车型、多物资特征的应急物资调度问题,设计分层调度方案,同时给出由两层物资调度系统组成的调度算例,并将该算例转化为2个相关的单层物资调度问题.以最小化系统调度任务完成时间为目标函数,利用遗传算法对一级和二级调度方案进行求解,得出系统中每种车型依次将何种货物从何地运往何处的具体方案.通过车辆各自运输任务的运货量计算和仓库点物资的实时统计结果表明,该分层调度方案符合各仓库出货量不超过现存量且各灾害点物资需求得到满足的供求条件,求解步骤简单且运行速度快.

Keyword :

应急物资调度 分层调度 车辆调度 遗传算法 目标函数

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GB/T 7714 胡飞虎 , 田朝晖 , 李威 et al. 基于遗传算法的应急物资分层调度研究 [J]. | 计算机工程 , 2015 , (10) : 53-58 .
MLA 胡飞虎 et al. "基于遗传算法的应急物资分层调度研究" . | 计算机工程 10 (2015) : 53-58 .
APA 胡飞虎 , 田朝晖 , 李威 , 韩鑫 . 基于遗传算法的应急物资分层调度研究 . | 计算机工程 , 2015 , (10) , 53-58 .
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Alleviation of Electromagnetic Interference Noise Using a Resonant Shunt for Balanced Converters EI SCIE Scopus
期刊论文 | 2015 , 30 (9) , 4762-4773 | IEEE TRANSACTIONS ON POWER ELECTRONICS | IF: 4.953
WoS CC Cited Count: 2 SCOPUS Cited Count: 2
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Abstract :

Balanced converter is an effective way to reduce the CM noise. However, the parasitic capacitance between the switch and heat sink leads to resonant problems, resulting in high noise in certain frequency range. This paper proposes a novel coupled inductor structure based on the balanced technique for the Boost converter to further reduce the CM noise at certain frequency range. A shunt resonant path is adopted to offer a maximum suppression. The analytical estimation for shunt winding's performance is provided for better design. Some simulation and experimental results of this new technique are presented to validate its effectiveness. The experiments about the capacitance unbalance, different load current, and reduction of the CM inductor size are also discussed for better understanding of this technique.

Keyword :

common mode (CM) noise shunt resonant path Balanced converter

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GB/T 7714 Zhang, Yu , Zheng, Feng , Wang, Yue . Alleviation of Electromagnetic Interference Noise Using a Resonant Shunt for Balanced Converters [J]. | IEEE TRANSACTIONS ON POWER ELECTRONICS , 2015 , 30 (9) : 4762-4773 .
MLA Zhang, Yu et al. "Alleviation of Electromagnetic Interference Noise Using a Resonant Shunt for Balanced Converters" . | IEEE TRANSACTIONS ON POWER ELECTRONICS 30 . 9 (2015) : 4762-4773 .
APA Zhang, Yu , Zheng, Feng , Wang, Yue . Alleviation of Electromagnetic Interference Noise Using a Resonant Shunt for Balanced Converters . | IEEE TRANSACTIONS ON POWER ELECTRONICS , 2015 , 30 (9) , 4762-4773 .
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基于改进遗传算法的应急物资配送车辆调度优化问题研究 CSCD PKU
期刊论文 | 2014 , (10) , 2928-2932,2936 | 计算机应用研究
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Abstract :

以调度完成时间最短为目标,对多种类型车辆从多个仓库点运载多种物资到多个灾害点的问题进行了数学描述,建立了相应的数学模型.采用标准遗传算法对基于模型的算例进行求解,针对标准遗传算法求解存在的早熟收敛、一定迭代次数条件下求解精度不高等问题,分别从改进交叉算子和同时改进交叉算子及迭代引入新个体两个方面对标准遗传算法进行改进.采用改进遗传算法对算例进行求解,并与标准遗传算法求得的解进行对比,结果表明改进遗传算法能明显改善早熟收敛的情况,并获得精度更高的解.

Keyword :

迭代引入新个体 早熟收敛 交叉算子 改进遗传算法 优化调度

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GB/T 7714 胡飞虎 , 马贝龙 , 杨丽 et al. 基于改进遗传算法的应急物资配送车辆调度优化问题研究 [J]. | 计算机应用研究 , 2014 , (10) : 2928-2932,2936 .
MLA 胡飞虎 et al. "基于改进遗传算法的应急物资配送车辆调度优化问题研究" . | 计算机应用研究 10 (2014) : 2928-2932,2936 .
APA 胡飞虎 , 马贝龙 , 杨丽 , 李威 . 基于改进遗传算法的应急物资配送车辆调度优化问题研究 . | 计算机应用研究 , 2014 , (10) , 2928-2932,2936 .
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A Source-Current-Detected Shunt Active Power Filter Control Scheme Based on Vector Resonant Controller EI SCIE Scopus
期刊论文 | 2014 , 50 (3) , 1953-1965 | IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS | IF: 1.756
WoS CC Cited Count: 55 SCOPUS Cited Count: 63
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Abstract :

A shunt active power filter (APF) with current detection at the source side is considered as a closed-loop system from the view of the whole power distribution system, which is expected with better harmonics filtering performance compared with the one with load current detection. The conventional source current detection control scheme can be mainly grouped into two types: 1) current-source-based (CS) scheme and 2) power-balance-based (PB) scheme. As introduced in this paper, the CS scheme has good dc-voltage regulation, but it bears inevitable conflict between filtering performance and system stability, whereas the PB scheme has excellent stable filtering performance, but it bears great influence on the dc voltage in the transient state. In this paper, a novel source current detection control scheme is proposed, which reserves the advantages of conventional schemes and, meanwhile, avoids their limitations. The proposed scheme employs a vector resonant controller, with which the shunt APF performs as an equivalent multiband rejection filter that series between nonlinear loads and the grid source, blocking selected harmonics components from the load side flowing into the source side. The proposed scheme is simple in structure, is needless of a harmonics extraction algorithm, and shows good stable and transient performance. Finally, the conclusions obtained in this paper are validated through experiments on the laboratory prototype.

Keyword :

Closed-loop system source current detection resonant controller shunt active power filter (APF)

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GB/T 7714 Yi, Hao , Zhuo, Fang , Zhang, Yanjun et al. A Source-Current-Detected Shunt Active Power Filter Control Scheme Based on Vector Resonant Controller [J]. | IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS , 2014 , 50 (3) : 1953-1965 .
MLA Yi, Hao et al. "A Source-Current-Detected Shunt Active Power Filter Control Scheme Based on Vector Resonant Controller" . | IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS 50 . 3 (2014) : 1953-1965 .
APA Yi, Hao , Zhuo, Fang , Zhang, Yanjun , Li, Yu , Zhan, Wenda , Chen, Wenjie et al. A Source-Current-Detected Shunt Active Power Filter Control Scheme Based on Vector Resonant Controller . | IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS , 2014 , 50 (3) , 1953-1965 .
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一种基于特征环的复杂网络结构化简方法 CSCD PKU
期刊论文 | 2013 , (6) , 52-56 | 计算机科学
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Abstract :

具有复杂连接关系的网难以进行结构分析和运行控制.基于特征环的网络化简方法,保持了原有网络的特性并有效降低了网络连接的复杂程度.网的研究基于单重有向图,在连接和路径概念的基础上,定义了环路径和复合环路径,进而引入了特征点和普通点的概念,并给出了单纯特征环和复合特征环的定义.给出了基于特征环的网结构化简原则和化简算法,结合实例对网络结构的化简进行了探讨.结果证明该方法可以有效化简复杂网络,但特征环的选择顺序不同时,网络化简的结果也可能不同.

Keyword :

特征环 网络化简 复合环 图化简 工作流 复杂网络

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GB/T 7714 胡飞虎 , 荆娟娟 , 刘露露 et al. 一种基于特征环的复杂网络结构化简方法 [J]. | 计算机科学 , 2013 , (6) : 52-56 .
MLA 胡飞虎 et al. "一种基于特征环的复杂网络结构化简方法" . | 计算机科学 6 (2013) : 52-56 .
APA 胡飞虎 , 荆娟娟 , 刘露露 , 马贝龙 . 一种基于特征环的复杂网络结构化简方法 . | 计算机科学 , 2013 , (6) , 52-56 .
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