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BloomRouter:A Framework for Dissemination of Compressed XML Stream

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Wuhan University Journal of Natural Sciences 2006年第1期11卷 100-106页

作者： bao Xiao-yuan TANG Shi-wei YANG dong-qing SONG Zai-sheng WU Ling Computer and Information Engineering College Tianjin Normal University Tianjin 300074 China Computer Science Department Peking UniversityBeijing 10087i China

As our best knowledge, in the Publish/Subscribe application environment, few research work has been done on the dissemination and routing of compressed XML （extended markup language） data. A high-speed compressed XML data routing and dissemination framework BloomRouter is proposed. In BloomRouter, a Bloom Filter based prefilte ring mechanism is used to filter out compressed XML elements that users do not care; after that an interval tree dis seminator forwards target elements to the corresponding end users by matching the incomming compressed XML elements with indexed users＇ query regions. Based on this framework, we can efficiently filter/query the compressed incoming XML data, and then route the query result to the corresponding subseriber.

关键词： XML bloom filters compression data stream

Projected Changes in Asian Summer Monsoon in RCP Scenarios of CMIP5

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Atmospheric and Oceanic Science Letters 2012年第1期5卷 43-48页

作者： bao qing State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics （LASG） Institute of Atmospheric Physics （lAP） Chinese Academy of Sciences Beijing 100029 China

Responses of the Asian Summer Monsoon(ASM) in future projections have been studied based on two core future projections of phase five of the Coupled Model Intercomparison Project(CMIP5) coordinated experiments with the IAP-coupled model FGOALS_s2(the Flexible Global Ocean-Atmosphere-Land System Model).The projected changes of the ASM in climatological mean and interannual variability were respectively *** the South Asian Summer Monsoon(SASM) and the East Asian Summer Monsoon(EASM) were intensified in their climatology,featuring increased monsoon precipitation and an enhanced monsoon lower-level westerly jet ***,the amplitude of the annual cycle of rainfall over East Asia(EA) is enhanced,thereby indicating a more abrupt monsoon *** the EA monsoon onset,the EASM marched farther northward in the future scenarios than in the historical *** the interannual variability,the leading pattern of the EASM,defined by the first multi-variable EOF analysis over EA,explains more of the total variances in the warmest future scenario,specifically,Representative Concentration Pathway(RCP8.5).Also,the correlation coefficients analysis suggests that the relationship between the EASM interannual variations and ENSO was significantly strengthened in the future projections,which may indicate improved predictability of the EASM interannual variations.

关键词： Asian Summer Monsoon CMIP ENSO monsoon change FGOALS EASM

Exponential stability of a pendulum in dynamic boundary feedback with a viscous damped wave equation

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Journal of Control and Decision 2022年第2期9卷 186-192页

作者： Lu Lu bao-qing Lu School of Basic Courses Beijing PolytechnicBeijngPeoples Republic of China School of Stistics Renmin University of ChinaBeijngPeople's Republic of China

In this paper,we continue the earlier work[Lu,L,&Wang,D.L.(2017).Dynamic boundary feed-back of a pendulum coupled with a viscous damped wave *** Proceedings of the 36th Chinese Control Conference(CCQ)(pp.1676-1680)]on study the stability of a pendulum coupled with a viscous damped wave equation *** time we get the exponential stability result which is much better than the previous strong *** a detailed spectral analysis and opera-tor separation,we establish the Riesz basis property as well as the spectrum determined growth condition for the ***,the exponential stability of the system is achieved.

关键词： Pendulum dynamic boundary feedback control viscous damping spectral analysis exponential stability

Effect of hot stamping parameters on the mechanical properties and microstructure of cold-rolled 22MnB5 steel strips

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International Journal of Minerals,Metallurgy and Materials 2014年第6期21卷 544-555页

作者： Jing Zhou bao-yu Wang Ming-dong Huang dong Cui School of Mechanical Engineering University of Science and Technology Beijing

Thermomechanical experiments were carried out to reproduce the hot stamping process and to investigate the effects of process parameters on the microstructure and mechanical properties of stamped parts. The process parameters, such as austenitizing temperature, soaking time, initial deformation temperature and cooling rate, are studied. The resulting microstructures of specimens were observed and analyzed. To evaluate the mechanical properties of specimens, tensile and hardness tests were also performed at room temperature. The op-timum parameters to achieve the highest tensile strength and the desired microstructure were acquired by comparing and analyzing the results. It is indicated that hot deformation changes the transformation characteristics of 22MnB5 steel. Austenite deformation promotes the austen-ite-to-ferrite transformation and elevates the critical cooling rate to induce a fully martensitic transformation.

关键词： boron steel strip metal stamping mechanical properties microstructure phase transitions

Numerical simulation of interior ballistic process of railgun based on the multi-field coupled model

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Defence Technology（防务技术） 2016年第2期12卷 101-105页

作者： qing-hua LIN bao-ming LI National Key Laboratory of Transient Physics Nanjing University of Science & Technology

Railgun launcher design relies on appropriate models. A multi-field coupled model of railgun launcher was presented in this paper. The 3D transient multi-field was composed of electromagnetic field, thermal field and structural field. The magnetic diffusion equations were solved by a finite-element boundary-element coupling method. The thermal diffusion equations and structural equations were solved by a finite element method. A coupled calculation was achieved by the transfer data from the electromagnetic field to the thermal and structural fields. Some characteristics of railgun shot, such as velocity skin effect, melt-wave erosion and magnetic sawing, which are generated under the condition of large-current and high-speed sliding electrical contact, were demonstrated by numerical simulation.

关键词：电磁轨道炮耦合模型数值模拟内弹道热扩散方程有限元法多场耦合三维瞬态

Convective/Large-scale Rainfall Partitions of Tropical Heavy Precipitation in CMIP6 Atmospheric Models

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Advances in Atmospheric Sciences 2021年第6期38卷 1020-1027页

作者： Jing YANG Sicheng HE qing bao State Key Laboratory of Earth Surface Process and Resource Ecology/Key Laboratory of Environmental Change and Natural Disaster Ministry of EducationFaculty of Geographical ScienceBeijing Normal UniversityBeijing 100875China Southern Marine Science and Engineering Guangdong Laboratory Guangzhou 511458China State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics(LASG) Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China

Convective/large-scale(C/L)precipitation partitions are crucial for achieving realistic rainfall modeling and are classified in 16 phase 6 of the Coupled Model Intercomparison Project(CMIP6)atmospheric *** 4 models capture the feature that convective rainfall significantly exceeds the large-scale rainfall component in the tropics while the other 12 models show 50%–100%large-scale rainfall component in heavy *** horizontal resolution generally increases the convective rainfall percentage,but not in all *** former 4 models can realistically reproduce two peaks of moisture vertical distribution,respectively located in the upper and the lower *** contrast,the latter 12 models correspond to three types of moisture vertical profile biases:(1)whole mid-to-lower tropospheric wet biases(60%–80%large-scale rainfall);(2)mid-tropospheric wet peak(50%convective/large-scale rainfall);and(3)lower-tropospheric wet peak(90%–100%large-scale rainfall).And the associated vertical distribution of unique clouds potentially causes different climate feedback,suggesting accurate C/L rainfall components are necessary to reliable climate projection.

关键词： CMIP6 heavy precipitation convective precipitation moisture vertical distribution

Phosphorus accumulation by bacteria isolated from a continuous-flow two-sludge system

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Journal of Environmental Sciences 2007年第4期19卷 391-395页

作者： bao Lin-lin LI dong LI Xiang-kun HUANG Rong-xin ZHANG Jie LV Yang XIA Guang-qing School of Municipal and Environmental Engineering Harbin Institute of Technology Harbin 150090 China School of Architecture and Civil Engineering Beifing University of Technology Beifing 100022 China Institute of Geology and Geophysics of Jilin Province Changchun 130021 China

In this article, polyphosphate-accumulating organisms （PAOs） from a lab-scale continuous-flow two-sludge system was isolated and identified, the different phosphorus accumulation characteristics of the isolates under anoxic and aerobic conditions were investigated. Two kinds of PAOs were both found in the anoxic zones of the two-sludge system, one of them utilized only oxygen as electron aeceptor, and the other one utilized either nitrate or oxygen as electron aeceptor. Of the total eight isolates, five isolates were capable of utilizing both nitrate and oxygen as electron acceptors to uptake phosphorus to some extent. And three of the five isolates showed good phosphorus accumulative capacities both under anoxic or aerobic conditions, two identified as Alcaligenes and one identified as Pseudomonas. Streptococcus was observed weak anoxic phosphorus accumulation because of its weak denitrification capacity, but it showed good phosphorus accumulation capacity under aerobic conditions. One isolates identified as Enterobacteriaceae was proved to be a special species of PAOs, which could only uptake small amounts of phosphorus under anoxic conditions, although its denitrification capacity and aerobic phosphorus accumulation capacity were excellent.

关键词： aerobic phosphorus accumulation anoxic phosphorus accumulation continuous-flow two-sludge system polyphosphateaccumulating organisms (PAOs)

ρ meson impact parameter distributions

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Chinese Physics C 2018年第6期42卷 37-43页

作者： bao-dong Sun Yu-Bing dong Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China School of Physics University of Chinese Academy of Sciences Beijing 100049 China Theoretical Physics Center for Science Facilities （TPCSF） CAS Beijing 100049 China

In this paper, the p meson impact parameter dependent parton distributions and the impact parameter dependent form factors are introduced and discussed. By employing a Gaussian form wave packet, we calculate the impac... 详细信息

关键词： ρ meson impact parameter distribution light-cone approach

A THEORETIC METHOD TO PREDICT POLYMER SOLUBILITY PARAMETERS

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Chinese Journal of Polymer Science 2007年第2期25卷 203-206页

作者： qing Ji bao-fu Qiao De-lu Zhao State Key Laboratoryof Polymer Physics and Chemistry Institute of Chemistry Chinese Academy of Sciences Beijing 100080 China

A partition function and a complete thermodynamic description for pure polymer fluids have been investigated based on a self-avoid-walk lattice model. Caused by the introduction of Gibbs distribution into the Flory-Huggins theory, the partition function and the thermodynamic description depicted their dependence on temperature well. In the present study, we applied the theory to calculate polymer solubility parameters. The polymer solubility parameters predicted by our theory are well consistent with the experiment values.

关键词： Polymer Solubility parameters Gibbs distribution.