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Fast Community Detection Based on Distance Dynamics

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Tsinghua Science and Technology 2017年第6期22卷 564-585页

作者： Lei Chen jing Zhang Lijun Cai Ziyun deng School of Information and Electrical Engineering Hunan University of Science and Technology Xiangtan 411201 China jing Zhang is with the College of Electrical and Information Engineering Hunan University Changsha 410082 China Lijun Cai is with the College of Information Science and Engineering Hunan University Changsha 410082 China. Ziyun deng is with the Department of Economics and Trade Changsha Commerce and Tourism College Changsha 410082 China

The distance dynamics model is excellent tool for uncovering the community structure of a complex network. However, one issue that must be addressed by this model is its very long computation time in large-scale networks. To identify the community structure of a large-scale network with high speed and high quality, in this paper, we propose a fast community detection algorithm, the F-Attractor, which is based on the distance dynamics model. The main contributions of the F-Attractor are as follows. First, we propose the use of two prejudgment rules from two different perspectives： node and edge. Based on these two rules, we develop a strategy of internal edge prejudgment for predicting the internal edges of the network. Internal edge prejudgment can reduce the number of edges and their neighbors that participate in the distance dynamics model. Second, we introduce a triangle distance to further enhance the speed of the interaction process in the distance dynamics model. This triangle distance uses two known distances to measure a third distance without any extra computation. We combine the above techniques to improve the distance dynamics model and then describe the community detection process of the F-Attractor. The results of an extensive series of experiments demonstrate that the F-Attractor offers high-speed community detection and high partition quality.

关键词： community detection interaction model complex network graph clustering graph mining

Effects of Joint on Dynamics of Space Deployable Structure

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Chinese Journal of Mechanical Engineering 2013年第5期26卷 861-872页

作者： GUO Hongwei ZHANG jing LIU Rongqiang deng Zongquan School of Mechanical and Electrical Engineering Harbin Institute of Technology

Joints are necessary components in large space deployable truss structures which have significant effects on dynamic behavior of these joint dominated *** researches usually analyzed effects of one or fewer joint characters on dynamics of jointed *** of joint stiffness,damping,location,number,clearance and contact stiffness on dynamics of jointed structures are systematically *** beam model containing linear joints is developed based on finite element method,influence of joint on natural frequencies and mode shapes of the jointed system are *** results show that frequencies of jointed system decrease dramatically when peak mode shapes occur at joint locations,and there are cusp shapes present in mode *** frequencies increase with joint damping increasing,there are different joint damping to achieve maximum system damping for different joint *** nonlinear force-displacement is described by describing function method,one-DOF model containing nonlinear joints is established to analyze joints freeplay and hysteresis *** results show that nonlinear effects of freeplay and hysteresis make dynamic responses switch from one resonance frequency to another frequency when amplitude exceed demarcation *** contact stiffness determine degree of system nonlinearity,while exciting force level,clearance and slipping force affect amplitude of dynamic *** responses of joint dominated deployable truss structure under different sinusoidal exciting force levels are *** test results show obvious nonlinear behaviors contributed by joints,dynamic response shifts to lower frequency and higher amplitude as exciting force *** test results are further compared with analytical results,and joint nonlinearity tested is coincident with hysteresis *** method of joint effects on dynamic characteristics of jointed system is proposed,which ca

关键词： deployable structure joint dynamic mode shape experiment

A discrete event systems approach to discriminating intermittent from permanent faults

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Chinese Journal of Aeronautics 2014年第2期27卷 390-396页

作者： deng Guanqian Qiu jing Liu Guanjun Lyu Kehong Laboratory of Science and Technology on Integrated Logistics Support College of Mechatronics and AutomationNational University of Defense Technology

Almost all work on model-based diagnosis （MBD） potentially presumes faults are per- sistent and does not take intermittent faults （IFs） into account. Therefore, it is common for diag- nosis systems to misjudge IFs as permanent faults （PFs）, which are the major cause of the problems of false alarms, cannot duplication and no fault found in aircraft avionics. To address this problem, a new fault model which includes PFs and IFs is presented based on discrete event systems （DESs）. Thereafter, an approach is given to discriminate between PFs and IFs by diagnosing the current fault. In this paper, the regulations of （PFs and IFs） fault evolution through fault and reset events along the traces of system are studied, and then label propagation function is modified to account for PFs and the dynamic behavior of IFs and diagnosability of PFs and IFs are defined. Finally, illustrative examples are presented to demonstrate the proposed approach, and the analysis results show the fault types can be discriminated within bounded delay if the system is diagnosable.

关键词： Diagnosability Diagnoser Discrete event systemsFault diagnosis Intermittent faults Permanent faults

Recognition and analysis of potential risks in China's carbon emission trading markets

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Advances in Climate Change Research 2019年第1期10卷 30-46页

作者： deng Mao-Zhi ZHANG wen-Xiu Institute of Energy Environment and EconomyTsinghua UniversitBeijing100084China School of Economics and Management Beihang UniversityBeijing100191China

China formally launched the carbon trading pilots in seven provinces and cities in *** on the operating situations of international carbon emission trading markets and that in China,this study compares and analyzes the potential risks in the European Union Emission Trading Scheme,California’s cap-and-trade system,and the seven regional carbon trading pilots in *** mainly recognizes market operation risks,risks of uncertain policy expectation,and risks of uncertain mechanism designs existing in China's carbon trading *** carbon market risks are not good for the formation of rational price signals,making it difficult to guide enterprises on how to make low-carbon technology *** risks also affect the effectiveness and functions of carbon markets,which can lead to the non-achievement of national emission reduction *** has launched the national carbon emission trading scheme on December 19,*** building the national carbon trading scheme,it is important to fully refer to the experiences of international carbon markets and China's carbon trading pilots apart from strengthening the recognition,control,and supervision of carbon market *** so can promote the healthy development of China's na-tional carbon trading scheme.

关键词： Carbon trading pilots Market operation risks Uncertain policy expectation risks Uncertain mechanism design risks

Genetic dissection of the sensory and textural properties of Chinese white noodles using a specific RIL population

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Journal of Integrative Agriculture 2017年第2期16卷 454-463页

作者： LI wen-jing deng Zhi-ying CHEN Guang-feng CHEN Fang LI Xing-feng TIAN Ji-chun State Key Laboratory of Crop Biology Ministry of Science and Technology/Key Laboratory of Crop Biology of Shandong Province/Agronomy CollegeShandong Agricultural University College of Ecology and Garden Architecture Dezhou University

To dissect the genetic control of the sensory and textural quality traits of Chinese white noodles, a population of recom- binant inbred lines （RILs）, derived from the cross of waxy wheat Nuomai 1 （NM1） and Gaocheng 8901 （Gc8901）, was used. The RILs were tested in three different environments to determine the role of environmental effects on quantitative trait loci （QTL） analysis. A total of 45 QTLs with additive effects for 17 noodle sensory and textural properties under three environments were mapped on 15 chromosomes. These QTLs showed 4.23-42.68% of the phenotypic variance explained （PVE）. Nineteen major QTLs were distributed on chromosomes 1 B, 1 D, 2A, 3B, 3D, 4A, and 6A, explaining more than 10% of the phenotypic variance （PV）. Clusters were detected on chromosomes 2B （3 QTLs）, 3B （11 QTLs） and 4A （5 QTLs）. The cluster detected on chromosome 4A was close to the Wx-B1 marker. Five co-located QTLs with additive effects were identified on chromosomes 2B, 3D, 4A, 6A, and 7B. The two major QTLs, ***-3B. 1 and ***-3B. 1, in cluster wPt666008-wPt5870 on chromosome 3B were detected in three different environments, which perhaps can be directly applied to improve the textural properties of noodles. These findings could offer evidence for the selection or development of new wheat varieties with noodle quality using molecular marker-assisted selection （MAS）.

关键词： wheat (Triticum aestivum L.) noodle sensory quality textural property QTL

Environmental stress level evaluation approach based on physical model and interval grey association degree

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Chinese Journal of Aeronautics 2013年第2期26卷 456-462页

作者： deng Guanqian Qiu jing Liu Guanjun Lv Kehong Laboratory of Science and Technology on Integrated Logistics Support College of Mechatronics Engineering and Automation National University of Defense Technology

Associating environmental stresses （ESs） with built-in test （BIT） output is an important means to help diagnose intermittent faults （IFs）. Aiming at low efficiency in association of traditional time stress measurement device （TSMD）, an association model is built. Thereafter, a novel approach is given to evaluate the integrated environmental stress （IES） level. Firstly, the selection principle and approach of main environmental stresses （MESs） and key characteristic parameters （KCPs） are presented based on fault mode, mechanism, and ESs analysis （FMMEA）. Secondly, reference stress events （RSEs） are constructed by dividing IES into three stress levels according to its impact on faults; and then the association model between integrated environmental stress event （IESE） and BIT output is built. Thirdly, an interval grey association approach to evaluate IES level is proposed due to the interval number of IES value. Consequently, the association output can be obtained as well. Finally, a case study is presented to demonstrate the proposed approach. Results show the proposed model and approach are effective and feasible. This approach can be used to guide ESs measure, record, and association. It is well suited for on-line assistant diagnosis of faults, especially IFs.

关键词： Environmental stress False alarms Intermittent faults Interval grey association degree Interval number

Self-consistent effective-one-body theory for spinning binaries based on post-Minkowskian approximation

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Science China(Physics,Mechanics & Astronomy) 2023年第7期66卷 17-28页

作者： Jiliang jing Weike deng Sheng Long Jieci Wang Department of Physics Key Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of Educationand Synergetic Innovation Center for Quantum Effects and ApplicationsHunan Normal UniversityChangsha 4100821China Center for Gravitation and Cosmology College of Physical Science and TechnologyYangzhou UniversityYangzhou 225009China

This study extends the research on the self-consistent effective-one-body theory of a real spinless two-body system based on the post-Minkowskian approximation(***.65,100411(2022))to the case of a binary system for the spinning black *** effective rotating metric and an improved Hamiltonian for the spinning black hole binaries are *** decoupled equation for the null tetrad component of the gravitational perturbed Weyl tensorψ4B in the effective rotating spacetime is found with the help of the gauge transform characteristics of the Weyl *** decoupled equation is then separated between radial and angular variables in the slowly rotating background spacetime,and a formal solution of ψ_(4)^(B) is *** this basis,the formal expressions of the radiation reaction force and the waveform for the“plus”and“cross”modes of the gravitational wave are *** results,obtained in the same effective spacetime,constitute a self-consistent effective-one-body theory for the spinning black hole binaries based on the post-Minkowskian approximation.

关键词： real spin two-body system decoupled equation with separable variables forψ_(4)^(B) ffective-one-body theory

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Ethanol Extract of Glycyrrhiza uralensis Fisch:Antidiarrheal Activity in Mice and Contraction Effect in Isolated Rabbit Jejunum

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Chinese Journal of Integrative Medicine 2023年第4期29卷 325-332页

作者： wen jing ZHANG Jian-wu LYU Yuan-xia ZHANG Hui deng Kai-xi CHEN Hong-xue WEI Ying Department of Pharmacy North Sichuan Medical CollegeNanchongSichuan Province 637100China

Objective:To evaluate the antidiarrheal effect of ethanol extract of Glycyrrhiza uralensis Fisch root(GFR)in vivo and jejunal contraction in ***:In vivo,50 mice were divided into negative control,positive control(verapamil),low-,medium-and high-dose GFR(250,500,1,000 mg/kg)groups by a random number table,10 mice in each *** antidiarrheal activity was evaluated in castor oil-induced diarrhea mice model by evacuation index(El).In vitro,the effects of GFR(0.01,0.03,0.1,0.3,1,3,and 10 g/L)on the spontaneous contraction of isolated smooth muscle of rabbit jejunum and contraction of pretreated by Acetylcholine(ACh,10μmol/L)and KCl(60 mmol/L)were observed for 200 *** addition,CaCl_(2)was accumulated to further study its mechanism after pretreating jejunal smooth muscle with GFR(1 and 3 g/L)or verapamil(0.03 and 0.1μmol/L)in a Ca^(2+)-free-high-K+solution containing ethylene diamine tetraacetic acid(EDTA).Results:GFR(500 and 1,000 mg/kg)significantly reduced El in castor oil-induced diarrhea model mice(P<0.01).Meanwhile,GFR(0.01,0.03,0.1,0.3,1,3,and 10 g/L)inhibited the spontaneous contraction of rabbit jejunum(P<0.05 or P<0.01).Contraction of jejunums samples pretreated by ACh and KCI with 50% effective concentration(EC50)values was 1.05(0.71-1.24),0.34(0.29-0.41)and 0.15(0.11-0.20)g/L,*** addition,GFR moved the concentration-effect curve of CaCl_(2)down to the right,showing a similar effect to ***:GFR can effectively reduce diarrhea and inhibit intestinal contraction,and these antidiarrheal effects may be based on blocking L-type Ca^(2+) channels and muscarinic receptors.

关键词： Glycyrrhiza uralensis Fisch antidiarrheal spasmolysis Chinese medicine

Adipose Rheb deficiency promotes miR-182-5p expression via the cAMP/PPARγsignaling pathway

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Journal of Genetics and Genomics 2023年第1期50卷 20-26页

作者： Jie wen Jiangming deng Ting Xiao Yu Liu wen Meng Department of Nephrology Hunan Key Laboratory of Kidney Disease and Blood PurificationThe Second Xiangya Hospital of Central South UniversityChangshaHunan 410011China Metabolic Syndrome Research Center The Second Xiangya Hospital of Central South UniversityChangshaHunan 410011China

Dysregulation of microRNAs(miRNAs)in adipocytes plays a critical role in the pathogenesis of ***,the signaling mechanisms regulating miRNAs production in adipose tissue remain largely ***,we show that adipose tissue-specific knockout of Ras homolog enriched in brain(Rheb),a direct upstream activator of mTOR,increases miR-182-5p level in mouse subcutaneous white adipose ***,the inhibition of mTOR signaling by rapamycin has no effect on miR-182-5p level in primary subcutaneous white adipocytes,suggesting the presence of a mTOR-independent mechanism regulating Rheb-mediated miR-182-5p *** with this view,Rheb-ablation activates the cAMP/PPARγsignaling *** addition,treatment of white adipocytes with pioglitazone,a PPARγagonist,dramatically upregulates miR-182-5p *** study reveals a unique mechanism by which Rheb regulates miR-182-5p in *** that increasing miR-182-5p in adipose tissue promotes beige fat development,our study also suggests a unique mechanism by which Rheb promotes thermogenesis and energy expenditure.

关键词： Rheb miR-182-5p White adipocytes cAMP/PPARγpathway Adipose tissue