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Secure Localization Algorithm Based on Node Cooperative for Sensor Networks

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Wuhan University Journal of Natural Sciences 2008年第5期13卷 636-640页

作者： MA jianguo peng Bao School of Information Engineering Southwest University ofScience and Technology Mianyang 621002 Sichuan China

As to the safety threats faced by sensor networks （SN）, nodes limitations of computation, memory and communication, a secure location algorithm （node cooperative secure localization, NCSL） is presented in this paper. The algorithm takes the improvements of SN location information security as its design targets, utilizing nodes＇ cooperation to build virtual antennae array to communicate and localize, and gains arraying antenna advantage for SN without extra hardware cost, such as reducing multi-path effects, increasing receivers＇ signal to noise ratio and system capa- bility, reducing transmitting power, and so on. Simulations show that the algorithm based on virtual antennae array has good localization ability with a at high accuracy in direction-of-arrival （DOA） estimation, and makes SN capable to resist common malicious attacks, especially wormhole attack, by using the judgment rules for malicious attacks.

关键词： sensor network secure algorithm cooperative antenna array

Anatomical peculiarities of sensory tracts of the wrist median nerve pedicled with nutrient vessels transferring to bridge wrist ulnar nerve defect

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Neural Regeneration Research 2006年第1期1卷 47-49页

作者： Sixin Ouyang Zhenshan peng jianguo Tan Tianhong peng Jianzhong Xiao Department of Anatomy Medical College of Nanhua University Hengyang 421001 Hunan Province China

BACKGROUND： Translocation or transplantation of nerve stem has good effect; however, nervous function of donator is completely lost. If some nerve stem is damaged, sensory tracts are intercepted from the near nerve stem by nutrient vessels to regard as neural graft for transferring and bridging which may repair injured nerve and decrease neural functional loss of donator. OBJECTIVE： To observe anatomical peculiarities on sensory tracts of wrist median nerve pedicled with nutrient vessels transferring to bridge wrist ulnar nerve defect, and to investigate its feasibility. DESIGN：Duplicated and measured design.SETTING ： Anatomy Department of Medical College affiliated to Nanhua University.MATERIALS： A total of 14 samples of upper limbs were selected from adult unnamed corpse and volunteers.METHODS： The experiment was completed at the Clinical Application Anatomy Laboratory of Medical College affiliated to Nanhua University from September to November 2005. Samples were perfused with red emulsion through artery to observe length, fibrous bands and blood supply of median nerve and ulnar nerve at wrist. Boundary of median nerve at wrist ranged from superficial site between flexor carpi radialis and palmaris Iongus to branch of common palmar digital nerves. Ulnar nerve at wrist ranged from branch of back of the hand to site of common palmar digital nerves. Proximal boundary of the two nerves was crossed from 1/8 to 2/8 region of forearm. Samples of upper limbs from 1 case were selected to simulate operation on sensory tracts of wrist median nerve pedicled with nutrient vessels transferring to bridge wrist ulnar nerve. MAIN OUTCOME MEASURES： Anatomical peculiarities on sensory tracts of wrist median nerve pedicled with nutrient vessels transferring to bridge wrist ulnar nerve defect. RESULTS： ① The length of wrist median nerves was 7.8 （7.5-8.1） cm. There were 19 to 27 nerve tracts in it and the majority belonged to sensory tracts on the ulnar side, in which n

关键词： length Anatomical peculiarities of sensory tracts of the wrist median nerve pedicled with nutrient vessels transferring to bridge wrist ulnar nerve defect

昆明犬IGF1R基因外显子多态性与体重和体尺性状的关联性分析

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黑龙江畜牧兽医 2024年第12期 115-121页

作者：韦云芳李飞翔彭建国陈方良魏红江云南农业大学动物科学技术学院昆明650201 云南省小型猪基因编辑与异种器官移植重点实验室昆明650201 公安部昆明警犬基地昆明650204 警犬技术公安部重点实验室昆明650204

为了解胰岛素样生长因子1受体(IGF1R)基因外显子多态性与昆明犬体重和体尺性状的关系,从而为优质昆明犬的培育寻找可靠的分子选择标记,试验采用PCR-单链构象多态性(PCR-SSCP)技术对昆明犬IGF1R基因外显子区域单核苷酸多态性(single nucl... 详细信息

为了解胰岛素样生长因子1受体(IGF1R)基因外显子多态性与昆明犬体重和体尺性状的关系,从而为优质昆明犬的培育寻找可靠的分子选择标记,试验采用PCR-单链构象多态性(PCR-SSCP)技术对昆明犬IGF1R基因外显子区域单核苷酸多态性(single nucleotide polymorphism, SNP)位点进行筛选,通过测序分析其突变情况,统计SNP位点的优势基因型、优势等位基因、多态信息含量(polymorphism information content, PIC)、纯合度(homozygosity, Ho)、杂合度(heterozygosity, He)、有效等位基因数(number of effective alleles, Ne)、Hardy-Weinberg平衡状态,并采用一般线性模型分析SNP位点与昆明犬体重和体尺性状的关联性。结果表明:在昆明犬IGF1R基因外显子中仅识别到1个SNP位点,该位点位于外显子8的第1 773位核苷酸处,发生了C→T的点突变,但氨基酸未变,命名为C1773T位点。C1773T位点在昆明犬群体中共存在两种基因型,分别为CC纯合型和CT杂合型,其中优势基因型为CC纯合型,优势等位基因为C,表现为低度多态(PIC0.05)。说明IGF1R基因C1773T位点对昆明犬胸宽具有一定影响,可作为昆明犬品种培育的潜在分子选择标记。

关键词：昆明犬 IGF1R基因基因多态性体尺性状关联性分析

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PCB“应力型”内层连接缺陷探究

印制电路信息 2024年第7期32卷 26-30页

作者：吴振龙黄炜彭建国付艺珠海方正科技多层电路板有限公司广东珠海519175 珠海越亚半导体有限公司广东珠海519175

随着印制电路板(PCB)层数越来越多,内层铜与孔铜连接的品质可靠性也越来越受关注。通常由于化学镀铜层与电镀层结晶不同,且板材与铜的膨胀系数不同,内层连接位置在应力作用下产生应力型内层连接缺陷(ICD)。通过对ICD切片3D显微镜和聚焦... 详细信息

随着印制电路板(PCB)层数越来越多,内层铜与孔铜连接的品质可靠性也越来越受关注。通常由于化学镀铜层与电镀层结晶不同,且板材与铜的膨胀系数不同,内层连接位置在应力作用下产生应力型内层连接缺陷(ICD)。通过对ICD切片3D显微镜和聚焦离子束(FIB)分析界定了应力型ICD (非钻污残留),探究了在生产制程中针对应力型ICD的管控和改善方法。

关键词：铜结晶内层连接位应力内层连接缺陷

Intracranial localization of arachnoid granulations in rats

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Neural Regeneration Research 2008年第4期3卷 441-443页

作者： Yanan Dong Min Yu Lei Meng Yong Jiang Jun Gao Honghai peng jianguo Shi Department of Neurosurgery Jinan Central Hospital Ji＇nan 250013 Shandong Province China

BACKGROUND： This paper describes histomorphologic studies on arachnoid granulations in rats, which have not been investigated in China to our knowledge. OBJECTIVE： To observe the distribution of intracranial arachnoid granulations in rats. DESIGN, TIME AND SETTING： The observational experiment was performed in the Academy of Life Sciences of Shandong Taishan Medical College from May to August 2004. MATERIALS： Thirty healthy adult Wistar rats （3-4 months old） of SPF grade, equal numbers of each sex, were selected for this study. Methylene blue parenteral solution was provided by Jiangsu Jichuan Pharmaceutical Company （China）, and an optical microscope （Type： CH20; Olympus Co. Ltd., Japan） was used for observation of the histomorphology of the arachnoid granulations. METHOD： Injection of methylene blue parenteral solution into the cerebellomedullary cistern of rats. MAIN OUTCOME MEASURE： The blue stained parts of the lateral sinus were sectioned, stained by hematoxylin and eosin, and then observed under the microscope. RESULTS： The cavitas subarachnoidealis had extensive blue staining after methylene blue injection, while the arachnoid and dura were without dye accumulation. The blue dye indicated the location of the arachnoid granulations. The location of these granulations was fixed, mainly in the lateral sinus at both sides of confluence within 4 mm of the internal jugular vein. CONCLUSION： The arachnoid granulations of the rat were located mainly in the lateral sinuses of the dura mater.

关键词： methylene blue rats arachnoid ultrastructure cranial venous sinuses dura mater

Distribution and influencing factors of acoustic characteristics of seafloor sediment in the Sunda Shelf

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Journal of Oceanology and Limnology 2024年第5期42卷 1486-1492页

作者： Zhengyu HOU Danling TANG jianguo LIU Zhenglin LI peng XIAO School of Ocean Engineering and Technology Sun Yat-sen University&Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 519000China Key Laboratory of Comprehensive Observation of Polar Environment(Sun Yat-sen University) Ministry of EducationZhuhai 519082China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou)&South China Sea Institute of Oceanology Chinese Academy of SciencesGuangzhou 511458China

To understand the acoustic and physical properties of piston core samples collected from the Sunda continental shelf and analyze their distribution patterns,the samples were analyzed in laboratory,from which three provinces were divided in sound speed,sound speed ratio,porosity,wet bulk density,and maximum shear ***Ⅰhad lower sound speed and sound speed ratio(1.04),low porosity,and high wet bulk ***Ⅲhad the lowest sound speed and sound speed ratio(0.99),highest porosity(81%),and lowest wet bulk density(1.34 g/cm^(3)).The distribution pattern indicates that sediment movement,sediment source,topography,and hydrodynamic conditions influenced the distribution of acoustic and physical ***,we investigated the relationship of the maximum shear strength to the porosity and wet bulk density,and found that the maximum shear strength was proportional to both the porosity and wet bulk *** finding has significant implications for ocean engineering applications.

关键词： seafloor sediment acoustic property Sunda Shelf

Deep Broad Learning for Emotion Classification in Textual Conversations

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Tsinghua Science and Technology 2024年第2期29卷 481-491页

作者： Sancheng peng Rong Zeng Hongzhan Liu Lihong Cao Guojun Wang jianguo Xie Center for Linguistics and Applied Linguistics and Laboratory of Language Engineering and ComputingGuangdong University of Foreign StudiesGuangzhou 510006China Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices South China Normal UniversityGuangzhou 510006China School of Computer Science and Cyber Engineering Guangzhou UniversityGuangzhou 510006China Modern Education Technology Center Guangdong University of Foreign StudiesGuangzhou 510006China

Emotion classification in textual conversations focuses on classifying the emotion of each utterance from textual *** is becoming one of the most important tasks for natural language processing in recent ***,it is a challenging task for machines to conduct emotion classification in textual conversations because emotions rely heavily on textual *** address the challenge,we propose a method to classify emotion in textual conversations,by integrating the advantages of deep learning and broad learning,namely *** aims to provide a more effective solution to capture local contextual information(i.e.,utterance-level)in an utterance,as well as global contextual information(i.e.,speaker-level)in a conversation,based on Convolutional Neural Network(CNN),Bidirectional Long Short-Term Memory(Bi-LSTM),and broad *** experiments have been conducted on three public textual conversation datasets,which show that the context in both utterance-level and speaker-level is consistently beneficial to the performance of emotion *** addition,the results show that our proposed method outperforms the baseline methods on most of the testing datasets in weighted-average F1.

关键词： emotion classification textual conversation Convolutional Neural Network(CNN) Bidirectional Long Short-Term Memory(Bi-LSTM) broad learning

Wide Stopband Substrate Integrated Waveguide Filter Using Bisection and Trisection Coupling in Multilayer

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Chinese Journal of Electronics 2024年第2期33卷 436-442页

作者： peng CHU jianguo FENG peng ZHU Lei GUO Long ZHANG Leilei LIU Guoqing LUO Ke WU College of Electronic and Optical Engineering Nanjing University of Posts and Telecommunications National and Local Joint Engineering Laboratory of RF Integration and Micro-Assembly Technology School of Information and Communication Engineering Dalian University of Technology Guangdong Provincial Key Laboratory of Optoelectronic Information Processing Chips and Systems Sun Yat-sen University College of Electronics and Information Engineering Shenzhen University School of Electronics and Information Hangzhou Dianzi University Poly-Grames Research Center Polytechnique Montreal

This article presents a highly efficient method for substrate-integrated-waveguide（SIW） filters to achieve very wide stopbands. By employing the proposed trisection slots in addition to the bisection slots as the inter-coupling structures, all spurious modes below TE505 of a SIW filter working in the fundamental mode TE101（f0）can be eliminated without requiring additional structure or complex theoretical analysis, without affecting the design of the fundamental passbands, and without degrading the performance of the filters. For verification, two prototype filters are designed, fabricated, and measured with wide stopbands up to 4.15f0 and 4.83f0, respectively. The proposed technique could facilitate the development of high-performance wide-stopband SIW filters for microwave/wireless circuits and systems.

关键词： Microwave measurement Couplings Filters Prototypes Nonhomogeneous media Microwave theory and techniques Microwave circuits

A review on adhesion behavior of chip seal pavement and aggregate

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Journal of Traffic and Transportation Engineering(English Edition) 2024年第3期11卷 441-466页

作者： Yuming Zhou Zhuyi peng Jinyu Wang jianguo Wei Hao Liu Di Wang Jinming Li Key Laboratory of Road Structure and Material of Ministry of Transport(Changsha) Changsha University of Science and TechnologyChangsha 410114China School of Traffic and Transportation Engineering Changsha University of Science and TechnologyChangsha 410114China Wuhan Huike Testing Co. Ltd.Wuhan 430000China Department of Civil Engineering University of OttawaON KIN 6N5Canada CCCC Infrastructure Maintenance Group Co. Ltd.Beijing 100102China

Chip seal is widely used for preventive maintenance to mitigate pavement deterioration,but it is prone to aggregate loss during pavement *** further promote the development and application of chip seals in road engineering in China,the research progress of the adhesion behavior of aggregate and binder in chip seals was reviewed in this paper,focusing on the adhesion mechanism of emulsified asphalt and alkaline *** Influencing factors and evaluation methodology of chip seals'aggregate adhesion behavior were also *** results demonstrate that the adhesion process between emulsified asphalt and alkaline aggregate is divided into three processes including infiltration,demulsification,and cluster,which is more complicated when compared to hot *** designing a chip seal,not only the characteristics of single material should be paid attention to,but also the combination of binder and aggregate matters a *** form good adhesion between aggregate and asphalt binder,various influencing factors such as material selection,design method,and construction technical index should be considered comprehensively in the whole design,construction,and operation *** methods for evaluating adhesion behavior are summarized,including macroscopic adhesion performance tests,image analysis technology,and model *** is not objective to evaluate the aggregate adhesion behavior of chip seal only by a single evaluation method.A comprehensive evaluation based on the micro-macro multi-scale method should be considered in the future.

关键词： Chip seal Adhesion behavior Asphalt binder Aggregate