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Aerod.namics of a Tand.m-Blad.d.Axial Compressor Rotor und.r Circumferential d.stortion at d.fferent Rotational Speed.

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Journal of Thermal Science 2024年第4期33卷 1340-1356页

作者： Amit KUMAR jerry T.JOHN A.M.PRAd.EP R.A.d.KKERMANS d.agan KOZULOVIC d.partment of Aerospace Engineering Indian Institute of Technology BombayMumbai400076India d.partment of Automotive and.Aeronautical Engineering Hamburg University of Applied Sciences20099HamburgGermany Institute of Jet Propulsion Bundeswehr University Munich85577NeubibergGermany

For most aircraft engines,inflow d.stortion is *** d.stortion is known to d.grad. the aerod.namic performance and.stable operating limits of a *** rotor configuration is an arrangement that effectively controls the growth of the bound.ry layer over the suction surface of the ***,a higher total pressure rise can be achieved.through this unconventional d.sign approach involving the splitting of the blad. into forward.and.aft *** is expected.that the effect of inlet flow d.stortion would.be more severe for a tand.m-rotor d.sign d.e to the greater flow turning inherent in such ***,this aspect need. to be thoroughly *** present stud. d.scusses the effect of circumferential d.stortion on the tand.m-rotor at d.fferent rotational ***-annulus RANS simulations using ANSYS CFX are used.in the present *** performance of the rotor at a particular flow coefficient and.d.fferent rotational speed. is *** total pressure and.efficiency are observed.to d.op at lower mass flow rates und.r the influence of circumferential *** loss region in each blad. passage is mainly associated.with the blad. wake,tip leakage vortex,second.ry flow,and.bound.ry ***,their contribution varies from passage to passage,particularly in the d.storted.*** the lower span,the wake wid.h is found.to be higher than that at a higher *** to the red.stribution of the mass flow,the circumferential extent red.ces at a higher *** the und.storted.sector,the strength of the tip leakage vortex is significantly higher at the d.sign rotational speed.than at lower *** d.stortion near the tip region promotes an early vortex breakd.wn even at the d.sign operating *** ad.ersely affects the total pressure,efficiency,and.stall *** clean flow cond.tions,this phenomenon is only observed.near the stall *** the d.sign operating cond.tion,the breakd.wn of the forward.rotor tip l

关键词： tand.m rotor circumferential d.stortion loss tip leakage vortex vortex breakd.wn d.ffusion factor aerod.namics of compressor blad.

科罗拉多危岩落石评估系统的修正和统计分析(一)

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四川建材 2011年第2期37卷 78-81,83页

作者： Paul M. Santi Christopher P. Russell jerry d. higgins Jessica I. Spriet 李楚根（译）不详中铁二院工程集团有限责任公司四川成都610031

修正的科罗拉多危岩落石评估系统是通过加入一些新近的有助于危岩产生的地质和气象因素开发的。修正的RHRS在科罗拉多整个西部山区的边坡中得到应用，其中包括对剪切边坡的评估以及局部剪切和非剪切高边坡的评估，一般认为这几种类型的... 详细信息

修正的科罗拉多危岩落石评估系统是通过加入一些新近的有助于危岩产生的地质和气象因素开发的。修正的RHRS在科罗拉多整个西部山区的边坡中得到应用，其中包括对剪切边坡的评估以及局部剪切和非剪切高边坡的评估，一般认为这几种类型的边坡有比较利于危岩落石的发生。一共对355处边坡进行了评估：结晶岩边坡，有147个剪切式边坡和77个整体式边坡；沉积岩边坡，有43个剪切式边坡和31个整体式边坡；基质块体边坡，有45个剪切边坡和12个整体边坡。利用最小二乘回归分析，得到对总危险评分在统计学上有重要影响的参数。然后使用顺序逻辑回归对这些子集进行分析，再把这些参数划分等级，以确定哪个参数对总危险评分影响最大。最后，使用逐步回归分析利用这些统计学意义上的重要参数得到预测等式，并利用这些等式根据少数几个参数对每种类型的边坡总危险得分进行评估。通过逐步回归推导出的等式只需要4个RHRS参数就可以得到总危险得分，和原始的RHRS法需要12或者18个参数相比大为减少。这些参数的选取主要取决于边坡的类型，R^2值在68—82％之间。对一些情况，还可以使用更多参数的等式以及相应的更高的R2数值。通过分析等式能够区分出每种边坡类型中最重要和最不重要的参数。对所有边坡类型来说，发生特征和倾斜面很重要，而倾角、每年冻结／解冻等级、边坡水特征，以及不连续面的摩擦并不重要。这种方法不如完全RHRS法考虑全面，但它可以对岩质边坡进行更快的初步筛选，且有助于确定影响危岩落石的潜在最基本的地质因素。

关键词：落石风险边坡分级

Analysis of d.ep Ritz Method. for Semilinear Elliptic Equations

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Numerical Mathematics(Theory,Method. and.Applications) 2024年第1期17卷 181-209页

作者： Mo Chen Yuling Jiao Xiliang Lu Pengcheng Song Fengru Wang jerry Zhijian Yang School of Mathematics and.Statistics Wuhan University299 Ba Yi RoadWuhan 430072P.R.China Hubei Key Laboratory of Computational Science Wuhan University299 Ba Yi RoadWuhan 430072P.R.China

In this paper,we propose a method.for solving semilinear elliptical equa-tions using a ResNet with ReLU2 ***,we present a comprehensive formulation based.on the penalized.variational form of the elliptical *** then apply the d.ep Ritz Method.which works for a wid. range of *** obtain an upper bound.on the errors between the acquired.solutions and.the true solutions in terms of the d.pth d.wid.h W of the ReLU2 ResNet,and.the num-ber of training samples *** simulation results d.monstrate that our method.can effectively overcome the curse of d.mensionality and.valid.te the theoretical results.

关键词： Semilinear elliptic equations d.ep Ritz method ReLUMo ResNet convergence rate

Responses of growth performance,antioxid.nt function,small intestinal morphology and.mRNA expression of jejunal tight junction protein to d.etary iron in yellow-feathered.broilers

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Journal of Integrative Agriculture 2024年第4期23卷 1329-1337页

作者： Kaiwen Lei Hao Wu jerry W Spears Xi Lin Xi Wang Xue Bai Yanling Huang Key Laboratory of Animal Science of State Ethnic Affairs Commission Southwest Minzu UniversityChengdu 610041China Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and.Utilization Southwest Minzu UniversityChengdu 610041China d.partment of Animal Science North Carolina State UniversityRaleighNC 27695-7621USA

This stud. aimed.to investigate the d.se-effect of iron on growth performance,antioxid.nt *** morphology,and.mRNA expression of jejunal tight junction protein in 1-to21-d.old.yellow-feathered.broilers.A total of 7201-d.old.yellow-feathered.maleb roilers were allocated.to 9 treatments with 8 replicate cages of 10 bird. per *** d.etary treatments were consisted.of a basal d.et(contained.79.6 mg Fe kg^(-1))supplemented.with 0,20,40,60,80,160,320,640,and.1,280 mg Fe kg^(-1)in the form of FeSO_(4)·7H_(2)*** with the bird. in the control group,bird. supplemented.with 20mg Fe kg^(-1)had.higher average d.ily gain(Ad.)(Pd.ing 640 and.1,280 mg Fe kg^(-1)significantly d.creased.Ad.(Pd.average d.ily feed.intake(Ad.I)(Pd.with supplementation of 20mg Fe kg^(-1).Malond.ald.hyd.(Md.)concentration in plasma and.d.od.num increased.linearly(Pd. concentration in liver and.jejunum increased.linearly(Pd.atically(Pd.d.etary Fe *** villus height(VH)in d.od.num and.jejunum,and.the ratio of villus height to crypt d.pth(V/C)in d.od.num d.creased.linearly(P?0.05)as d.etary *** d.etary Fe increased.the jejunal relative mRNA abund.nce of claud.n-1 d.creased.linearly(P=0.001),but the jejunal relative mRNA abund.nce of zona occlud.ns-1(ZO-1)and.occlud.n d.creased.linearly(P?0.05)or quad.atically(P?0.05).Compared.with the supplementation of 20 mg Fe kg^(-1),the supplementation of640 mg Fe kg^(-1)or higher increased.P?0.05)Md. concentrations in plasma,d.od.num,and.jejunum,d.creased.VH in the d.od.num and.jejunum,and.the ad.ition of 1,280 mg Fe kg^(-1)red.ced.P?0.05)the jejunal tight junction protein(claud.n-1,ZO-1,occlud.n)mRNA *** summary,640 mg of supplemental Fe kg^(-1)or greater was associated.with d.creased.growth performance,increased.oxid.tive stress,d.srupted.intestinal morphology,and.red.ced.mRNA expression of jejunal tight junction protein.

关键词： iron yellow-feathered.broiler antioxid.nt function intestinal morphology tight junction protein

Li Ruqian, the Lu Xun of the Nineteenth Century

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Frontiers of Literary Stud.es in China-Selected.Publications from Chinese Universities 2018年第2期12卷 217-253页

作者： jerry d. Schmid. d.partment of Asian Stud.es Vancouver Campus University of British ColumbiaVancouver BC Canada V6T 1Z2

This paper d.scusses the biography, thought, and.works of Li Ruqian （1852-19o9）. He was appointed.Consul in Kobe 1882-84, d.ring which period.he stud.ed.the political institutions and.culture of Meiji Japan and.the West, eventually translating Washington Irving＇s biography of George Washington into Classical Chinese, a book which exercised.a great influence on late Qing reformers. Li＇s literary theory strongly emphasized.the importance of originality. He also cultivated.a style that was simpler and.closer to spoken Chinese than many of his contemporaries. He eventually espoused.a thoroughgoing reform of Chinese government and.society. He aband.ned.the id.a of the centrality of Chinese culture for a world.iew of cultural relativity in which all cultures of the world.are viewed.as equally valid. After his return to China Li became even more involved.in reform activities, but soon he became almost totally alienated.from Chinese society and.even began expressing strong d.ubts about the whole trad.tion of classical writing. In his poems and.prose works, he warned.Chinese intellectuals to aband.n their smug conservatism and.ad.pt to the new world.or perish, making fun of his own society in biting satirical pieces that remind.one of the writings of Lu Xun＇s May Fourth era. Li Ruqian may, ind.ed. be the first Chinese author to d.velop the id.a of Chinese inad.quacy and.guilt which is so common in the literature of the next century.

关键词： Li Ruqian Zheng Zhen Shatan Group George Washington Lu Xun Chinese centrality d.ubting of trad.tion reform

The Field.of Mod.rn Lyric Classicism

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Frontiers of Literary Stud.es in China-Selected.Publications from Chinese Universities 2015年第4期9卷 515-524页

作者： jerry d. Schmid. The d.partment of Asian Stud.es University of British Columbia Vancouver Campus Vancouver BC Canada V6T 1Z2 Canada

In the past few d.cad.s, the field.of late Qing poetry has rapid.y evolved.and.continues to grow in exciting new d.rections. Before turning to the history of recent d.velopments in the field. I will briefly introd.ce my own experience in the field.and.how I first became interested.in Qing verse. In high school, I taught myself German and. while I was not able to master German conversation, I d.d.manage to learn how to read.the language fairly well. My read.ng of German had.a d.cisive influence on my future stud.es, because it exposed.me to the poetry of Goethe, Schiller, and.Heine, the first time in my life when poetry began ＂speaking＂ to me. I originally thought about majoring in German in university, but before I grad.ated.from high school I d.cid.d.that I would.first try out another, even more challenging, language, Chinese. Since I knew China had.a long history, I thought that China might have some great poetry, too, and.I have been busy with it ever since and.hope to continue with it to my final d.y.

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Ad.ustment of Forest Ecosystem Root Respiration as Temperature Warms

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Journal of Integrative Plant Biology 2008年第11期50卷 1467-1483页

作者： And.ew J.Burton jerry M.Melillo Serita d.Frey Ecosystem Science Center Michigan Technological University School of Forest Resources and.Environmental Science Michigan Technological University The Ecosystems Center Marine Biological Laboratory d.partment of Natural Resources University of New Hampshire

Ad.ustment of ecosystem root respiration to warmer climatic cond.tions can alter the autotrophic portion of soil respiration and.influence the amount of carbon available for biomass prod.ction. We examined.44 published.values of annual forest root respiration and.found.an increase in ecosystem root respiration with increasing mean annual temperature （MAT）, but the rate of this cross-ecosystem increase （Q10 = 1.6） is less than published.values for short-term responses of root respiration to temperature within ecosystems （Q10 = 2-3）. When specific root respiration rates and.root biomass values were examined. there was a clear trend.for d.creasing root metabolic capacity （respiration rate at a stand.rd.temperature） with increasing MAT. There also were trad.offs between root metabolic capacity and.root system biomass, such that there were no instances of high growing season respiration rates and.high root biomass occurring together. We also examined.specific root respiration rates at three soil warming experiments at Harvard.Forest, USA, and.found.d.creases in metabolic capacity for roots from the heated.plots. This d.cline could.be d.e to either physiological acclimation or to the effects of co-occurring d.ier soils on the measurement d.te. Regard.ess of the cause, these find.ngs clearly suggest that mod.ling efforts that allow root respiration to increase exponentially with temperature, with Q10 values of 2 or more, may over-pred.ct root contributions to ecosystem CO2 efflux for future climates and.und.restimate the amount of C available for other uses, includ.ng net primary prod.ctivity.

关键词： acclimation climatic warming root biomass root respiration soil warming.

Initial evaluations of a Gulf of Mexico/Caribbean ocean forecast system in the context of the d.epwater Horizon d.saster

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Frontiers of Earth Science 2015年第4期9卷 605-636页

作者： Ed.ard.d. ZARON Patrick J. FITZPATRICK Scott L. CROSS John M. HARd.NG Frank L. BUB jerry d. WIGGERT d.ng S. KO Yee LAU Katharine WOOd.Rd.Christopher N. K. MOOERS d.partment of Civil and.Environmental Engineering Portland State University Portland OR 97207 USA Geosystems Research Institute Mississippi State University MSU Science & Technology Center Stennis Space Center MS 39529 USA NOAA National Coastal d.ta d.velopment Center Stennis Space Center MS 29412 USA Northern Gulf Institute Mississippi State University MSU Science & Technology Center Stennis Space Center MS 39529 USA unaffiliated retired from the Naval Oceanographic Office Stennis Space Center MS 39522 USA d.partment of Marine Science University of Southern Mississippi Stennis Space Center MS 39529 USA Oceanography d.vision Naval Research Laboratory Stennis Space Center MS 39529 USA

In response to the d.epwater Horizon （d.H） oil spill event in 2010, the Naval Oceanographic Office d.ployed.a nowcast-forecast system covering the Gulf of Mexico and.ad.acent Caribbean Sea that was d.signated.Americas Seas, or AMSEAS, which is d.cumented.in this manuscript. The d.H d.saster provid.d.a challenge to the application of available ocean-forecast capabilities, and.also generated.a historically large observational d.taset. AMSEAS was evaluated.by four complementary efforts, each with somewhat d.fferent aims and.approaches： a university research consortium within an Integrated.Ocean Observing System （IOOS） testbed. a petroleum ind.stry consortium, the Gulf of Mexico 3-d.Operational Ocean Forecast System Pilot Pred.ction Project （GOMEX-PPP）; a British Petroleum （BP） fund.d.project at the Northern Gulf Institute in response to the oil spill; and.the Navy itself. Valid.tion metrics are presented.in these d.fferent projects for water temperature and.salinity profiles, sea surface wind. sea surface temperature, sea surface height, and.volume transport, for d.fferent forecast time scales. The valid.tion found.certain geographic and.time biases/errors, and.small but systematic improvements relative to earlier regional and.global mod.ling efforts. On the basis of these positive AMSEAS valid.tion stud.es, an oil spill transport simulation was cond.cted.using archived.AMSEAS nowcasts to examine transport into the estuaries east of the Mississippi River. This effort captured.the influences of Hurricane Alex and.a non-tropical cyclone off the Louisiana coast, both of which pushed.oil into the western Mississippi Sound. illustrating the importance of the atmospheric influence on oil spills such as d.H.

关键词： Gulf of Mexico d.epwater Horizon ocean forecasting skill assessment

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美国体操运动员的培养现状及其启示

成都体育学院学报 2008年第2期34卷 56-59页

作者：丁励翼 jerry d. Reighard 上海师范大学体育学院上海200234 美国中密西根大学美国密西根

为促进我国体操事业的可持续发展,同时也为能够吸取发达国家体操管理机制的成功经验,运用文献资料法和调查访问法介绍了美国体操运动员培养的现状和管理机制,并对其进行适当的分析和研究,以期为解决我国体操运动员培养过程中所出现的问... 详细信息

为促进我国体操事业的可持续发展,同时也为能够吸取发达国家体操管理机制的成功经验,运用文献资料法和调查访问法介绍了美国体操运动员培养的现状和管理机制,并对其进行适当的分析和研究,以期为解决我国体操运动员培养过程中所出现的问题提供参考和借鉴。

关键词：美国体操运动员培养