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Water Science and Engineering 2012年第2期5卷 210-218页

作者： bo hu Zhong-ru WU Guan-biao LIU Bin ZHAO bo XU NARI Group Corporation State Grid Electric Power Research InstituteNanjing 210003P.R.China College of Water Conservancy and Hydropower Engineering Hohai UniversityNanjing 210098P.R.China

Reinforcement quality evaluation at the abutment is an important research direction. Prototype monitoring and theoretical derivation were integrated to study the replacement reinforcement quality in abutment contact zones of the Xiaowan ultra-high arch dam. The principles of monitoring layout and design are introduced in detail. Prototype monitoring shows that the increment of the interfacial compressive stress is much larger in the impoundment stage than in the regulating stage. The water pressure and time-effect are two main factors affeeting the interfacial stress. The time-effect is the key factor in the initial impoundment stage, and the water pressure is the key factor after impoundment. The contact properties are significantly improved by grouting. This study shows that there are three typical stages in the joint opening hydrographs, namely the compression stage, opening stage, and stable stage. There is a nonlinear relationship between the joint opening and temperature, which can be well described by the S-function. In conclusion, the reinforcement effect is satisfying, and the abutment is safe.

关键词： ultra-high arch dam prototype monitoring," compressive stress joint opening," safety evaluation

Spatiotemporal characteristics of ultraviolet solar radiation in China

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Atmospheric and Oceanic Science Letters 2019年第4期12卷 302-304页

作者： hu bo LIU hui LIU Zirui State Key Laboratory of Atmospheric boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina Shaanxi Provincial Meteorological Observatory Shaanxi Meteorology AdministrationXi'anChina

UV radiation plays an important role in climate change and photochemical reactions,and in Ecosystem *** this study,the authors presented study results of China’s National Basic Research Program Study on the climatic characteristics and reconstruction method of UV radiation in *** spatiotemporal variation of UV radiation in China has been discussed,and then an effcient modeling method has been established to obtain history UV radiation data to analyse the variation trends of UV radiation in ***,the influence of aerosol,cloud,ozone,and water vapor on UV radiation has been discussed.

关键词： Ultraviolet radiation reconstruction model aerosol optical depth trends

Ionic Liquid and HP-β-CD Modified Capillary Zone Electrophoresis to Separate Hyperoside, Luteolin and Chlorogenic Acid

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Chinese Chemical Letters 2006年第2期17卷 231-234页

作者： Yue Ling WANG Zhong bo hu Zhuo Bin YUAN Department of Chemistry Graduate School of the Chinese Academy of Sciences Beijing 100049

Ionic liquid （1-ethyl-3-methylimidazolium tetrafluoroborate, 1E-3MI-TFB） and HP-β- CD as modifier was added to the buffer to separate hyperoside, luteolin and chlorogenic acid. Experiments explored the effect of concentration of 1E-3MI-TFB and HP-β-CD on separation. The results indicated that 1.0 mmol/L HP-β-CD and 1%0 （v/v） 1E-3MI-TFB added to the buffer simultaneously could achieve a good compromise of resolution and analysis time. Capillary experiments and UV spectra indicated that there was interaction between 1E-3MI-TFB and analytes.

关键词： Ionic liquid 1-ethyl-3-methylimidazolium tetrafluorobomte capillary zone electrophoresis lute.olin hyperoside chlorogenic acid.

Terminal Sliding Mode Control for Cyber Physical System Based on Filtering Backstepping

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International Journal of Automation and computing 2015年第5期12卷 497-502页

作者： Fei Li Jian-bo hu Lei Zheng Jian-Hao Wang Equipment Management and Safety Engineering College Air Force Engineering University Unit 93286 People's Liberation Army

Based on a nonlinear flight dynamic model with aerodynamic coefficients and external disturbance uncertainties, which is a typical cyber physical system, a filtering backstepping terminal sliding mode control method is proposed for a robust *** tracking differentiator can provide the capability of solving the problem of 'complexity explosion' in backstepping controllers to simplify the backstepping implementation. Nonlinear disturbance observers are used to observe the uncertainties of the nonlinear flight dynamic system. The terminal sliding mode controller is designed to improve its convergence rate and the tracking accuracy. Finally,nonlinear 6-degree-of-freedom simulation results for an F-16 aircraft model elaborate the effectiveness of the proposed control system.

关键词： Cyber-physical system(CPS) disturbance uncertainti

A Novel Multi-Hop Algorithm for Wireless Network with Unevenly Distributed Nodes

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Computers, Materials & Continua 2019年第1期58卷 79-100页

作者： Yu Liu Zhong Yang Xiaoyong Yan Guangchi Liu bo hu School of Computer Engineering Jinling Institute of TechnologyNanjing211169China School of Intelligence Science and Control Engineering Jinling Institute of TechnologyNanjing211169China School of Modern Post&Institute of Modern Posts Nanjing University of Posts and TelecommunicationsNanjing210003China Stratifyd Inc. CharlotteNC 28208USA Center of Information Construction and Management Nanjing Normal University of Special EducationNanjing210038China

Node location estimation is not only the promise of the wireless network for target recognition,monitoring,tracking and many other applications,but also one of the hot topics in wireless network *** this paper,the localization algorithm for wireless network with unevenly distributed nodes is discussed,and a novel multi-hop localization algorithm based on Elastic Net is *** proposed approach is formulated as a regression problem,which is solved by Elastic *** other previous localization approaches,the proposed approach overcomes the shortcomings of traditional approaches assume that nodes are distributed in regular areas without holes or obstacles,therefore has a strong adaptability to the complex deployment *** proposed approach consists of three steps:the data collection step,mapping model building step,and location estimation *** the data collection step,training information among anchor nodes of the given network is *** mapping model building step,the mapping model among the hop-counts and the Euclidean distances between anchor nodes is constructed using Elastic *** location estimation step,each normal node finds its exact location in a distributed *** scenario experiments and simulation experiments do exhibit the excellent and robust location estimation performance.

关键词： Multi-hop localization Elastic Net regularization sparse

Improvement Design for Distributed Real-Time Stream Processing Systems

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Journal of Electronic Science and Technology 2019年第1期17卷 3-12页

作者： Wei Jiang Liu-Gen Xu Hai-bo hu Yue Ma the School of Information and Software Engineering University of Electronic Science and Technology of China the Department of Computer Science and Engineering University of Notre Dame

In the era of Big Data, typical architecture of distributed real-time stream processing systems is the combination of Flume, Kafka, and Storm. As a kind of distributed message system, Kafka has the characteristics of horizontal scalability and high throughput, which is manly deployed in many areas in order to address the problem of speed mismatch between message producers and consumers. When using Kafka, we need to quickly receive data sent by producers. In addition, we need to send data to consumers quickly. Therefore, the performance of Kafka is of critical importance to the performance of the whole stream processing system. In this paper, we propose the improved design of real-time stream processing systems, and focus on improving the Kafka's data loading *** use Kafka cat to transfer data from the source to Kafka topic directly, which can reduce the network transmission. We also utilize the memory file system to accelerate the process of data loading, which can address the bottleneck and performance problems caused by disk I/O. Extensive experiments are conducted to evaluate the performance, which show the superiority of our improved design.

关键词： Kafka Kafka cat memory file system message queue real-time stream processing system

CH_2,NH,and O heteroatom substitution effects on the electronic,optical,and charge transport properties of a 2,1,3-benzothiadiazole-based derivative:Insights from theory

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Science China Chemistry 2012年第7期55卷 1364-1369页

作者： hu bo YAO Chan WANG QingWei ZHANG Hao YU JianKang Faculty of Chemistry Jilin Normal UniversitySiping 136000China Key Laboratory of Preparation and Applications of Environmental Friendly Materials(Jilin Normal University) Ministry of EducationSiping 136000China State Key Laboratory of Theoretical and Computational Chemistry Jilin UniversityChangchun 130023China Institute of Applied Physics and Technology Foundation Department of Liaoning Technical UniversityHuludao 123000China

A set of CH2-,NH-,and O-substituted 2,1,3-benzothiadiazole(BTD)-based derivatives have been investigated theoretically in order to explore their electronic,optical,and charge transport *** calculation results show that the electronic and optical properties of the pristine molecule can be easily tuned through changing the S substituent in the central aromatic *** on the calculated maximum emission wavelength,we predict that CH2-,NH-,and O-substituted BTD-based derivatives could be used as red,green,and orange light-emitting materials,*** CH2-,NH-or O-substitution,the oscillator strengths of the emission spectra are enhanced with respect to that of the pristine molecule,implying that these compounds have larger fluorescence ***,it can be deduced that CH2-,NH-,and O-substituted BTD-based derivatives may act as hole transport materials in organic light-emitting diodes.

关键词： organic light-emitting devices (OLEDs) 2 1 3-benzothiadiazole electronic properties optical properties reorganizationenergy

Potato-Cabbage Double Cropping Effect on Nitrate Leaching and Resource-Use Efficiencies in an Irrigated Area

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Pedosphere 2012年第6期22卷 842-847页

作者： hu bo FAN Ming-Shou HAO Yun-Feng ZHANG Jian-hua College of Agronomy Inner Mongolia Agricultural UniversityHohhot 010019(China) Bayannur City Agriculture Science Institute Bayannur 015500(China) School of Life Sciences and State Key Laboratory of Agrobiotechnology The Chinese University of Hong KongHong Kong(China)

To reduce the nitrate leaching risk after potato （Solanum tuberosum L.） harvest and improve nitrogen fertilizer-use efficiency, a potato-cabbage double cropping system （DCS） was established at Hetao, North China, an arid area with irrigated land. A two-year field experiment demonstrated that planting early-maturing potato cultivar under plastic mulch shortened its growth period by 14 d and allowed a second crop of cabbage to scavenge the soil residual NO^--N to a depth of 160 cm, substantially reducing the risk of nitrate leaching into groundwater. The yearly total N uptake in DCS was about 110 kg ha-1 more than that in the conventional cropping system （CCS）, i.e., mono potato planting. This accounted for apparent nitrogen recovery （ANR） improvement of 16.90%-26.57% in the DCS as compared to that in the CCS for both years. As a result, the soil residual NO3-N in the 0-160 cm soil profile in the DCS was lower than that in the CCS. The solar energy-use efficiency and soil-use efficiency were also substantially increased with DCS.

关键词： apparent nitrogen recovery nitrogen uptake soil resources solar energy yield

Salt glands in Glycine soja ***

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Chinese Science Bulletin 1999年第10期44卷 923-926页

作者： Jingmei Lu Youliang Liu bo hu Bingchang Zhuang Nanjing Agr Univ Nanjing 200095 Peoples R China NE Normal Univ Sch Life Sci Changchun 130024 Peoples R China

A scanning electron microscope observation is carried out on Glycine soja L., which grows around the estuary of the Yellow River, in Kenli County, Shandong Province. It is first discovered that there are salt glands, in the shape of balls, on the surface of the stems and leaves of G. soja L., and distributed at the intercellular layer. With a handle at the base, the salt glands are not equal in size, and show a layer-upon-layer structure. They have a diameter of 21 .6 μm, a handle length of 1.2 μm, their secretory pore’s diameter is 5.6 μm. There are two ways to secrete salt ions: younger glands secrete salt ions through the secretory pore, and mature glands by breaking themselves.

关键词： Glycine soja L. salt glands secretory structure.