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Effect of water level fluctuations on temporal-spatial patterns of foraging activities by the wintering Hooded Crane(Grus monacha)

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Chinese Birds 2015年第3期6卷 169-177页

作者： Dongmei Zhang Lizhi Zhou Yunwei Song School of Resources and Environmental Engineering Anhui University Institute of Biodiversity and Wetland Ecology Anhui University Anhui Biodiversity Information Center Shengjin Lake National Nature Reserve of Anhui Province

Background:The Yangtze River floodplain provides important wintering habitats for Hooded Cranes(Grus monacha) in *** in the water level change foraging habitat and food availability,affecting their temporal-spatial patterns of foraging *** is of considerable importance to investigate the effect of these fluctuations on food availability for wintering Hooded Cranes and their foraging response to these *** their behavior patterns is beneficial in protecting the wintering crane population and restoring their wintering ***:A field survey of the winter behavior of cranes was carried out at Shengjin Lake from November in 2013 to April in *** variables,as well as the spatial distribution and behavior patterns of wintering cranes at their foraging sites during five stages of water level fluctuation were *** on this data we analyzed the relationship of foraging behavior relative to water level fluctuations and habitat ***:The foraging habitats used by Hooded Cranes varied at the different water level *** the water level decreased,the use of meadows and mudflats *** the water dropped to its lowest level,the use by the Hooded Crane in the mudflats reached a *** were statistically significant differences in time budget in the three types of habitats over the five stages of the water *** the mudflats,the foraging behavior and maintenance behavior varied significantly with the water level,while the alert behavior showed little *** of a generalized linear model showed that the five water level stages and three habitat types had a significant effect on foraging behavior,while the combined effect of these two variables was significant on the foraging time budget and the length of foraging activity of the Hooded ***:With the decrease in the water level,the use of mudflats by Hooded Cranes increased *** availability in differ

关键词： Water level fluctuations Foraging activity Temporal-spatial pattern Hooded Crane Grus monacha

High-Order Statistics of Temperature fluctuations in an Unstable Atmospheric Surface Layer over Grassland

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Advances in Atmospheric Sciences 2018年第10期35卷 1265-1276页

作者： Rui LYU Fei HU Lei LIU Jingjing XU Xueling CHENG State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China University of Chinese Academy of Sciences Beijing 100049China

Skewness(S) and kurtosis(K) of temperature in the surface layer over a grassland are investigated under unstable thermal stratifications. We find that both skewness and kurtosis generally obey Monin–Obukhov similarity theory and tend to be constant values(1.5 and 5.3, respectively) when the stability parameter z/L <-2. Quantitative formulas of the similarity functions are proposed. The temperature probability density function(PDF) is close to Gaussian in near neutral stratification and non-Gaussian in unstable stratification. The influence of coherent motions on the PDF behavior is analyzed using the quadrant analysis technique. It shows that PDF behaviors are controlled by ejections and sweeps. The results also indicate that the PDF type of the ejections always follows a Gaussian distribution, while the PDF of the sweeps changes with stability.

关键词： temperature fluctuations Monin–Obukhov similarity theory skewness kurtosis

Influence of Quantal and Statistical fluctuations on Phase Transitions in Finite Nuclei

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Communications in Theoretical Physics 2011年第10期56卷 718-726页

作者： G.Kanthimathi N.Boomadevi T.R.Rajasekaran R.M.D.Engineering College R.S.M.NagarKavaraipettai-601206Tamil NaduIndia Department of Physics Manonmaniam Sundaranar UniversityTirunelveli-627012Tamil NaduIndia

Investigations on thermal evolution of pairing-phase transition and shape-phase transition in light nuclei are made as a function of pair gap, deformation, temperature and angular momentum using a finite temperature statistical approach with main emphasis to fluctuations. The occurrence of a peak structure in the specific heat predicted as signals of the pairing-phase and shape-phase transitions are reviewed and it is found that they are not actually true phase transitions and it is only an artifact of the mean field models. Since quantal number and spin fluctuations and statistical fluctuations in pair gap, deformation degrees of freedom and energy when incorporated, it wash out the pairing-phase transition and smooth out the shape-phase transition. Phase transitions due to collapse of pair gap and deformation is discussed and a clear picture of pairing-phase transition in light nuclei is presented in which pairing transition is reconciled.

关键词： phase transitions specific heat fluctuations

Low-frequency fluctuations in the magnetosheath: Double Star TC-1 and Cluster observations

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Science China(Technological Sciences) 2008年第10期51卷 1626-1638页

作者： DU Jian1,2 WANG Chi1, SONG Pu3,4 & ZHANG TieLong5 1 State Key Laboratory of Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190, China 2 Graduate School, Chinese Academy of Sciences, Beijing 100049, China 3 Earth, Environmental and Atmospheric Sciences Department, University of Massachusetts, Lowell, Mas-sachusetts MA 01854, USA 4 Center for Atmospheric Research, University of Massachusetts, Lowell, Massachusetts MA 01854, USA 5 Space Research Institute, Austrian Academy of Sciences, Graz A-8010, Austria State Key Laboratory of Space Weather Center for Space Science and Applied Research Chinese Academy of Sciences Beijing China Graduate School Chinese Academy of Sciences Beijing China Earth Environmental and Atmospheric Sciences Department University of Massachusetts Lowell USA Center for Atmospheric Research University of Massachusetts Lowell USA Space Research Institute Austrian Academy of Sciences Graz Austria

The magnetic field variations are analyzed in the range of time periods from 4 s to 240 s in the magnetosheath observed by the Double Star TC-1 and Cluster in 2004. The characteristics of the magnetic field fluctuations are strongly controlled by the angle between the upstream interplanetary magnetic field (IMF) and the normal of the bow shock. Generally speaking, the magnetic field fluctuations in the quasi- parallel magnetosheath are more intense than those in the quasi-perpendicular ones. Almost purely compressional waves are found in the quasi-perpendicular magnetosheath. With the increase of the local plasma β, both the magnitude and direction of the magnetic field fluctuate more intensely. There exists an inverse correlation between the local temperature anisotropy T⊥/T|| and the plasma β.

关键词： low-frequency fluctuations magnetosheath MHD instabilities

Housing Price fluctuations Across China:An Equilibrium Mechanism Perspective

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Tsinghua Science and Technology 2007年第3期12卷 302-308页

作者：张红翁少群周旋 Department of Construction Management Tsinghua University Department of Land Economy University of CambridgeCambridgeUnited Kingdom

The mechanisms affecting housing prices were studied using the equilibrium housing prices based on classic supply/demand theory. The fluctuations of the actual housing prices were then analyzed relative to the equilibrium prices. The equilibrium prices for each area were calculated from economic statistics and housing prices in 35 China metropolitan areas. The fluctuations of the actual prices are then manifested as functions of the equilibrium price, the mean reversion, and the autocorrelation coefficient. The results show that the equilibrium prices are determined by the basic economic conditions in China and that the equilibrium prices greatly affect the fluctuation of the actual prices, which return to the equilibrium price through self-adjustments. The data also shows that the actual prices in China have the trend of continuing to rise in the future.

关键词： actual housing price equilibrium housing price fluctuations

Effectiveness and safety of opicapone in Parkinson’s disease patients with motor fluctuations: the OPTIPARK open-label study

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Translational Neurodegeneration 2020年第1期9卷 96-104页

作者： Heinz Reichmann Andrew Lees José-Francisco Rocha Diogo Magalhaes Patrício Soares-da-Silva the OPTIPARK investigators Department of Neurology University of DresdenDresdenGermany University College London Reta Lila Weston InstituteLondonUK Global Parkinson’s Disease Department BIAL–Portela&CA S.ACoronadoPortugal Research and Development Department BIAL–Portela&CA S.Ada Siderurgia Nacional4745-457 S Mamede do CoronadoPortugal Department of Pharmacology and Therapeutics Faculty of MedicineUniversity PortoPortoPortugal MedInUP Center for Drug Discovery and Innovative MedicinesUniversity PortoPortoPortugal 不详

Background:The efficacy and safety of opicapone,a once-daily catechol-O-methyltransferase inhibitor,have been established in two large randomized,placebo-controlled,multinational pivotal ***,clinical evidence from routine practice is needed to complement the data from the pivotal ***:OPTIPARK(NCT02847442)was a prospective,open-label,single-arm trial conducted in Germany and the UK under clinical practice *** with Parkinson’s disease and motor fluctuations were treated with opicapone 50 mg for 3(Germany)or 6(UK)months in addition to their current levodopa and other antiparkinsonian *** primary endpoint was the Clinician’s Global Impression of Change(CGI-C)after 3 *** assessments included Patient Global Impressions of Change(PGI-C),the Unified Parkinson’s Disease Rating Scale(UPDRS),Parkinson’s Disease Questionnaire(PDQ-8),and the Non-Motor Symptoms Scale(NMSS).Safety assessments included evaluation of treatment-emergent adverse events(TEAEs)and serious adverse events(SAEs).Results:Of the 506 patients enrolled,495(97.8%)took at least one dose of *** these,393(79.4%)patients completed 3 months of ***,71.3 and 76.9%of patients experienced any improvement on CGI-C and PGI-C after 3 months,respectively(full analysis set).At 6 months,for UK subgroup only(n=95),85.3%of patients were judged by investigators as improved since commencing *** scores at 3 months showed statistically significant improvements in activities of daily living during OFF(mean±SD change from baseline:?3.0±4.6,p<0.0001)and motor scores during ON(?4.6±8.1,p<0.0001).The mean±SD improvements of?3.4±12.8 points for PDQ-8 and-6.8±19.7 points for NMSS were statistically significant versus baseline(both p<0.0001).Most of TEAEs(94.8%of events)were of mild or moderate *** considered to be at least possibly related to opicapone were reported for 45.1%of patients,with dyskinesia(11.5%)and dry mouth(6.5%)being

关键词： Levodopa Motor fluctuations Open-label Opicapone Parkinson’s disease

Investigation of Wall Pressure fluctuations in a Turbulent Boundary Layer by Large Eddy Simulation

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Journal of Shanghai Jiaotong university(Science) 2007年第6期12卷 817-823页

作者：潘雨村张怀新 School of Naval Architecture Ocean and Civil Eng. Shanghai Jiaotong Univ.

Large eddy simulation (LES) was used to investigate the space-time field of the low Mach number, fully developed turbulent boundary layer on a smooth, rigid flat plate. The wall-pressure field simulated by LES was analyzed to obtain the pressure statistics, including the wall-pressure root-mean square, skewness and flatness factors, which show the wall pressure distribution was not Gaussian. The profile of the auto-power spectral density and the contour of the streamwise wavenumber-frequency spectral density of wall-pressure were plotted. The "convection ridge" can be observed clearly and the convection velocity can be calculated from the location of the convection peak.

关键词： turbulent boundary layer wall-pressure fluctuations large eddy simulation (LES) wavenumber-frequency spectral convection velocity

Evolutions of the Spectra of Historical Flood/Drought fluctuations

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Chinese Science Bulletin 1994年第8期39卷 664-669页

作者：严中伟 Institute of Atmospheric Physics Academia Sinica Beijing 100080 PRC

Spectral analysis has often been adopted in the research field of climatic *** authors defined significant periods from the spectra, by which they might fore-cast future climates. Unfortunately, important differences among the results havelong been neglected because the previous authors always stressed only the similaritiesbetween their results and the others. No serious discussion was made fromthe viewpoint of periodic climatic changes. The difficulty in getting deep insight

关键词： climatic fluctuations power spectra chaos global changes.

The Stabilizing Effect of Industrial Structure Upgrade on Economic fluctuations in China

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Economic and Political Studies 2015年第1期3卷 18-41页

作者： FUQIAN FANG XINYU ZHAN the School of Economics Renmin University of China the School of Public Finance and Taxation Zhongnan University of Economics and Law

Empirical study using a time-varying parameter model indicates that since the reform and opening up of China,its industrial structure upgrade has had an increasingly significant stabilizing effect on the amplitude of economic fluctuations.A further analysis using a TGARCH model reveals that the three major industrial sectors have asymmetrical effects on the size of macroeconomic fluctuation:the primary industry(extraction)has little effect;the secondary industry(manufacturing)has a leverage effect mainly caused by heavy industry;the tertiary industry(services)has a clear stabilizing effect,with the effect of transportation,logistics,the postal industry,housing-catering services,and other service industries being most significant,and the effect of wholesale,retail,the finance industry and real estate being less significant due to their own large *** policy implications of the findings are that to maintain stable growth in the economy,China should optimize the relations of the three major industrial sectors,and further push for the upgrading of the industrial structure,especially the development of the tertiary industry.

关键词： industrial structure economic fluctuations stabili