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Local Discontinuous Galerkin Methods for the Two-Dimensional Camassa–holm Equation Dedicated to Celebrate the Sixtieth Anniversary of USTC

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Communications in mathematics and Statistics 2018年第3期6卷 359-388页

作者： Tian ma Yan Xu School of mathematical Sciences University of Science and Technology of ChinaHefei 230026AnhuiPeople’s Republic of China

In this paper,the local discontinuous Galerkin method is developed to solve the two-dimensional Camassa–holm equation in rectangular *** idea of LDG methods is to suitably rewrite a higher-order partial differential equations into a firstorder system,then apply the discontinuous Galerkin method to the system.A key ingredient for the success of such methods is the correct design of interface numerical *** energy stability for general solutions of the method is *** with the Camassa–holm equation in one-dimensional case,there are more auxiliary variables which are introduced to handle high-order derivative *** proof of the stability is more *** resulting scheme is high-order accuracy and flexible for arbitrary h and p *** types of numerical simulations are provided to illustrate the accuracy and stability of the method.

关键词： Local discontinuous Galerkin method Two-dimensional Camassa-holm equation Stability

Late Mesozoic rifting and its deep dynamic mechanisms in the central Sulu orogenic belt: Records from Lingshan Island

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Science China Earth Sciences 2022年第9期65卷 1751-1771页

作者： Tengfei ZHOU Yaoqi ZHOU Nina SФAGER Paul martin holm Zhenkai ZHANG Jun WANG Zhao LIANG Hongyu MU Yanjun CHENG Feifei LIU Miao WANG Yue ZHANG Hui ZHANG Yangjian GU Shihui DONG Hanjie ZHAO manjie LI Yang CHEN Yanzi LIU School of Geosciences China University of Petroleum(East China)Qingdao 266580China Department of Geosciences and Natural Resource management University of CopenhagenCopenhagen-K 1350Denmark Shandong Provincial key Laboratory of Deep Oil&Gas China University of Petroleum(East China)Qingdao 266580China Shaanxi Center of Mineral Geological Survey Shaanxi Institute of Geological SurveyXi'an 710068China School of Earth Sciences Yunnan UniversityKunming 650500China Department of Science and Technology Hebei GEO UniversityShijiazhuang 050031China College of Earth Science and Engineering Shandong University of Science and TechnologyQingdao 266590China School of Architectural Engineering Binzhou UniversityBinzhou 256500China Research Institute of Petroleum Exploration and Development Shengli Oilfield CompanySINOPECDongying 257015China key Laboratory of Geological Safety of Coastal Urban Underground Space Ministry of Natural ResourcesQingdao Geo-Engineering Surveying InstituteQingdao 266101China

The Lingshan Island scientific drill confirms that two episodes(Laiyang period and Qingshan period) of rifting developed in the central Sulu orogenic belt(SOB) in Late Mesozoic. With a set of methods including fieldwork, drilling, core logging, zircon U-Pb dating and whole rock geochemistry applied, the age, the depositional sequence and the deep dynamic mechanisms of rift evolution were unraveled. The stratigraphic sequence of the Laiyang-Qingshan Groups on Lingshan Island was composed of two different rifting sequences:(1) Laiyang Group(147–125 ma), which consists of deep-water gravity flow deposits with interlayers of intermediate volcanic rocks;and(2) Lower Qingshan Group(125–119 ma), which unconformably overlies the former sequence and contains subaerial volcanic deposits and terrestrial deposits. The tectonic environment changed during the evolution of these two episodes of rifting: the rift was in a NNW-SSE extensional environment in the Laiyang period and showed the typical passive rifting character that “lithospheric extension and rifting preceded volcanism”. The passive rifting period was ended by a short WNW-ESE compression at about 125 ma. After that, the tectonic environment transferred to a strong NW-SE extensional environment and the rifting evolved into a volcanic arc basin in the Qingshan period. The igneous rocks are shoshonitic to high-k calc-alkaline trachyandesites to trachytes with a few intercalated lamprophyres and a *** geochemical characteristics of the igneous rocks indicate that they are mantle-derived melts with a metasomatized mantle source and/or crustal contamination. In addition, an increased thinning of the lithosphere happened during the rifting *** low-angle subduction of the Paleo-Pacific plate in the Jurassic weakened the thickened SOB lithospheric mantle. The rollback of the subducting plate started in late Jurassic to early Cretaceous, and the SOB lithospheric mantle was delaminated synchronously because of t

关键词： Sulu orogenic belt Lingshan Island Late Mesozoic Rifting Slab subduction Basin dynamics

Measurement and Correlation of Pressure Drop for Gas-Liquid Two-phase Flow in Rectangular Microchannels

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Chinese Journal of Chemical Engineering 2010年第6期18卷 940-947页

作者： ma Youguang JI Xiyan WANG Dongji FU Taotao ZHU Chunying School of Chemical Engineering and Technology State Key Laboratory of Chemical Engineering Tianjin University Tianjin 300072 China

The pressure drop of gas-liquid two-phase flow in microchannel is of fundamental importance in heat and mass transfer processes. In this work,the pressure drop of gas-liquid two-phase flow in horizontal rectangular cross-section microchannels was measured by a pressure differential transducer system. Water,ethanol and n-propanol were used as liquid phase to study the effects of capillary number on pressure drop;air was used as the gas phase. Four microchannels with various dimensions of 100 μm× 200 μm,100 μm× 400 μm,100 μm× 800 μm and 100 μm× 2000 μm(depth × width) were used for determining the influence of configuration on the pressure drop. Experimental results showed that in micro-scale,the capillary number also affected the pressure drop rema.kably,and in spite of only one-fold difference in aspect ratio,the variation of pressure drop reached up to near three times under the same experimental conditions. Taking the effects of aspect ratio and surface tension into account,a modi-fied correlation for Chisholm parameter C in the Chisholm model was proposed for predicting the frictional multi-plier,and the predicted values by the proposed correlation showed a satisfactory agreement with experimental data.

关键词： pressure drop rectangular cross-section microchannel surface tension configuration influence Chis-holm parameter C

Performance and calibration of quark/gluon-jet taggers using 140 fb^(-1) of pp collisions at √s=13 TeV with the ATLAS detector

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Chinese Physics C 2024年第2期48卷 1-25页

作者： G. Aad B. Abbott k. Abeling N.J. Abicht S.H. Abidi A. Aboulhorma H. Abramowicz H. Abreu Y. Abulaiti B.S. Acharya C. Adam Bourdarios L. Adamczyk S.V. Addepalli M.J. Addison J. Adelman A. Adiguzel T. Adye A.A. Affolder Y. Afik M.N. Agaras J. Agarwala A. Aggarwal C. Agheorghiesei A. Ahmad F. Ahmadov W.S. Ahmed S. Ahuja X. Ai G. Aielli A. Aikot M. Ait Tamlihat B. Aitbenchikh I. Aizenberg M. Akbiyik T.P.A. Åkesson A.V. Akimov D. Akiyama N.N. Akolkar k. Al khoury G.L. Alberghi J. Albert P. Albicocco G.L. Albouy S. Alderweireldt M. Aleksa I.N. Aleksandrov C. Alexa T. Alexopoulos F. Alfonsi M. Algren M. Alhroob B. Ali H.M.J. Ali S. Ali S.W. Alibocus M. Aliev G. Alimonti W. Alkakhi C. Allaire B.M.M. Allbrooke J.F. Allen C.A. Allendes Flores P.P. Allport A. Aloisio F. Alonso C. Alpigiani M. Alvarez Estevez A. Alvarez Fernandez M. Alves Cardoso M.G. Alviggi M. Aly Y. Amaral Coutinho A. Ambler C. Amelung M. Amerl C.G. Ames D. Amidei S.P. Amor Dos Santos k.R. Amos V. Ananiev C. Anastopoulos T. Andeen J.k. Anders S.Y. Andrean A. Andreazza S. Angelidakis A. Angerami A.V. Anisenkov A. Annovi C. Antel M.T. Anthony E. Antipov M. Antonelli F. Anulli M. Aoki T. Aoki J.A. Aparisi Pozo M.A. Aparo L. Aperio Bella C. Appelt A. Apyan N. Aranzabal S.J. Arbiol Val C. Arcangeletti A.T.H. Arce E. Arena J-F. Arguin S. Argyropoulos J.-H. Arling O. Arnaez H. Arnold G. Artoni H. Asada k. Asai S. Asai N.A. Asbah J. Assahsah k. Assamagan R. Astalos S. Atashi R.J. Atkin M. Atkinson H. Atmani P.A. Atmasiddha k. Augsten S. Auricchio A.D. Auriol V.A. Austrup G. Avolio k. Axiotis G. Azuelos D. Babal H. Bachacou k. Bachas A. Bachiu F. Backman A. Badea P. Bagnaia M. Bahmani A.J. Bailey V.R. Bailey J.T. Baines L. Baines O.k. Baker E. Bakos D. Bakshi Gupta V. Balakrishnan R. Balasubramanian E.M. Baldin P. Balek E. Ballabene F. Balli L.M. Baltes W.k. Balunas J. Balz E. Banas M. Bandieramonte A. Bandyopadhyay S. Bansal L. Barak M. Barakat E.L. Barberio D. Barberis M. Barbero M.Z. Barel k.N. Barends T. Barillari M-S. Barisits T. Barklow P. Baron D.A. Baron Mo The ATLAS Collaboration

The identification of jets originating from quarks and gluons,often referred to as quark/gluon tagging,plays an important role in various analyses performed at the Large Hadron Collider,as Standard Model measurements and searches for new particles decaying to quarks often rely on suppressing a large gluon-induced *** paper describes the measurement of the efficiencies of quark/gluon taggers developed within the ATLAS Collaboration,using √s=13 TeV proton–proton collision data with an integrated luminosity of 140 fb^(-1) collected by the ATLAS *** taggers with high performances in rejecting jets from gluon over jets from quarks are studied:one tagger is based on requirements on the number of inner-detector tracks associated with the jet,and the other combines several jet substructure observables using a boosted decision tree.A method is established to determine the quark/gluon fraction in data,by using quark/gluon-enriched subsamples defined by the jet *** in tagging efficiency between data and simulation are provided for jets with transverse momentum between 500 GeV and 2 TeV and for multiple tagger working points.

关键词： ATLAS JET QUARk GLUON TAGGING

苏鲁造山带中部晚中生代裂谷作用与深部动力机制——来自灵山岛的记录

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中国科学：地球科学 2022年第10期52卷 2002-2022页

作者：周腾飞周瑶琪 Nina SØAGER Paul martin holm 张振凯王俊梁钊穆宏玉程燕君刘菲菲王淼张悦张卉辜洋建董诗绘赵汉杰李曼洁陈扬刘燕姿中国石油大学(华东)地球科学与技术学院青岛266580 Department of Geosciences and Natural Resource management University of CopenhagenCopenhagen-K 1350Denmark 中国石油大学(华东)山东省深层油气重点实验室青岛266580 陕西省地质调查院陕西省矿产地质调查中心西安710068 云南大学地球科学学院昆明6000 河北地质大学科技处石家庄050031 山东科技大学地球科学与工程学院青岛266590 滨州学院建筑工程学院滨州256600 中国石油石化股份有限公司胜利油田分公司勘探开发研究院东营257015 青岛地质工程勘察院自然资源部滨海城市地下空间地质安全重点实验室青岛266101

灵山岛科学钻探井的最新成果表明,晚中生代苏鲁造山带内部发育莱阳、青山两期裂谷作用.通过野外踏勘、科学钻探、岩芯描述、锆石年代学与全岩地球化学的研究,探明了裂谷发育时代,揭露了裂谷充填序列,并探讨了其演化动力学机制.灵山岛地... 详细信息

灵山岛科学钻探井的最新成果表明,晚中生代苏鲁造山带内部发育莱阳、青山两期裂谷作用.通过野外踏勘、科学钻探、岩芯描述、锆石年代学与全岩地球化学的研究,探明了裂谷发育时代,揭露了裂谷充填序列,并探讨了其演化动力学机制.灵山岛地区莱阳-青山群地层序列呈现两期不同性质的裂谷充填序列:莱阳群(147~125ma),主要由深水重力流沉积与少部分火成岩夹层组成;青山群下部(125~119ma),不整合覆盖于下伏地层之上,主要由陆上火山岩与浅水陆相沉积地层组成.两期裂谷演化过程中构造环境发生了重要转变:裂谷莱阳期处于NNW-SSE向伸展拉张的构造环境,呈现出“先伸展开裂,后岩浆作用”的被动裂谷特征,在125ma左右经历了一个短暂的NWW-SEE向挤压,结束了被动裂谷阶段,之后转变为NW-SE向强烈伸展环境,演化为青山期火山弧盆.裂谷火成岩多为钾玄岩至高钾钙碱性系列的粗面安山质与粗面质/粗面英安质熔岩或火山碎屑岩,伴有数套煌斑岩夹层与一套流纹岩.火成岩地球化学特征指示其应为地幔来源的派生熔体,且其地幔源区受到交代作用或岩浆形成过程受到了地壳混染,裂谷发育演化过程中伴随着巨量的岩石圈减薄.古太平洋板块侏罗纪低角度俯冲弱化了苏鲁造山带加厚岩石圈地幔,晚侏罗至早白垩世发生回卷,岩石圈地幔发生了重力垮塌被拆沉,导致莱阳期被动裂谷的发育.之后古太平洋板块高角度俯冲、回卷与后撤速率达到了高峰,区域强烈伸展,软流圈物质上涌引起区域快速隆升,导致被动裂谷夭亡.下地壳受上涌软流圈物质加热发生部分熔融,形成的长英质熔体上涌侵位并强烈喷发,裂谷青山期演化为火山弧盆,表现出了一定主动裂谷的特性.综上,灵山岛地区(苏鲁造山带内部)发育莱阳期被动裂谷与青山期火山弧盆(具主动裂谷性质),是从古特提斯构造域向环太平洋构造域转换的记录.苏鲁造山带岩石圈地幔拆沉与软流圈物质上涌是两期裂谷发育、演化的深部动力学机制,裂谷发育演化受到古太平洋板块俯冲、回卷与后撤的远程控制.

关键词：苏鲁造山带灵山岛晚中生代裂谷作用板块俯冲盆地动力学

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现代舞:新方向

北京舞蹈学院学报 2015年第5期 101-105页

作者：艾玛·霍金斯马昱西安音乐学院舞蹈系西安710061

《高等教育中的现代舞》是艾玛·霍金斯(Alma ***,1905-1998)在20世纪50年代的理论著作。霍金斯于20世纪30年代,在美国著名现代舞教育圣地本宁顿学院(Bennington College)学习舞蹈,师从现代舞大师多丽丝·韩夫丽(Doris Humphrey)及汉娅... 详细信息

《高等教育中的现代舞》是艾玛·霍金斯(Alma ***,1905-1998)在20世纪50年代的理论著作。霍金斯于20世纪30年代,在美国著名现代舞教育圣地本宁顿学院(Bennington College)学习舞蹈,师从现代舞大师多丽丝·韩夫丽(Doris Humphrey)及汉娅·霍尔姆(Hanya holm)。同时,霍金斯深受著名教育哲学家哈罗德·荣格(Harold Rugg)的影响,将其一生致力于舞蹈教育的研究。该书在80年代再版,全书共六章,包括:第一章,回顾现代舞蹈在美国高等教育中的发展历程。第二章,现代舞在高等教育中的目标。第三、四、五章,分别从现代舞与人的身体、现代舞与个人表现、现代舞与人际关系三个方面,重点论述了现代舞在高等教育中的独特价值。第六章,展望现代舞在高等教育中发展的新趋势,并给出建议。本文选译自20世纪80年代年代版本中的第六章"现代舞:新方向"。

关键词：高等教育现代舞艾玛·霍金斯

关于一类广义Novikov方程的强解的持续性质的研究

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西北大学学报（自然科学版） 2015年第4期45卷 532-536页

作者：贺婷婷马飞遥宁波大学理学院浙江宁波315211 宁波大学非线性科学研究中心浙江宁波315211

Camassa-holm方程、Degasperis-Procesi方程和Novikov方程是3种非常经典的可积的发展方程。这里研究的一类带有非线性平方项和立方项的广义Novikov方程就是上述3种发展方程的推广,文中主要研究该方程的强解的持续性质。结果表明,当这类... 详细信息

Camassa-holm方程、Degasperis-Procesi方程和Novikov方程是3种非常经典的可积的发展方程。这里研究的一类带有非线性平方项和立方项的广义Novikov方程就是上述3种发展方程的推广,文中主要研究该方程的强解的持续性质。结果表明,当这类广义的Novikov方程的强解在初始时刻以指数方式衰减时,它在以后的每个时刻也将呈现这种指数衰减形式。

关键词：广义Novikov方程持续性质 Gronwall’s不等式

Comparison between high-frequency irreversible electroporation and irreversible electroporation ablation of small swine liver:follow-up of DCE-MRI and pathological observations

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Chinese Medical Journal 2021年第17期134卷 2081-2090页

作者： Jing Li Xiao-Bo Zhang Jing-Jing Wang Lu-Jia Jin Hu-Sheng Shan Xiao Zhang Li ma Xiao-Dong Xue Xin Zhang Zhong-Liang Zhang Liang-Liang Meng Fei Yuan Yue-Yong Xiao Medical School of Chinese People’s Liberation Army Beijing 100853China Department of Radiology Characteristic Medical Center of Chinese People’s Armed Police ForceTianjin 300162China Department of Radiology The First Medical Center of the General Hospital of the People’s Liberation ArmyBeijing 100853China Department of Intensive Care Unit Tianjin First Central HospitalTianjin 300152China Department of General Surgery The First Medical Center of the General Hospital of the People’s Liberation ArmyBeijing 100853China Department of Radiotherapy Huai’an Medical AreaGeneral Hospital of the Eastern Theater CommandHuai’anJiangsu 223001China Department of Anesthesiology The First Medical Center of the General Hospital of the People’s Liberation ArmyBeijing 100853China

Background:High-frequency irreversible electroporation(H-FIRE)is a novel,next-generation nanoknife technology with the advantage of relieving irreversible electroporation(IRE)-induced muscle ***,the difference between IRE and H-FIRE with distinct ablation parameters was not clearly *** study aimed to compare the efficacy of the two treatments in ***:Ten Bamaminiature swinewere divided into two group:five in the 1-day group and five in the 7-day *** efficacy of IRE and H-FIRE ablation was compared by volume transfer constant(krans),rate constant(kep)and extravascular extracellular volume fraction(Ve)value of dynamic contrast-enhanced magnetic resonance imaging(DCE-MRI),size of the ablation zone,and histologic *** animal underwent the IRE *** of the electrodesweremeasured during ***-MRI images were obtained 1,4,and 7 days after ablation in the 7-day *** animals in the two groups were euthanized 1 day or 7 days after ablation,and subsequently,IRE and H-FIRE treated liver tissues were collected for histological ***’s t test or mann-Whitney U test was applied for comparing any two ***-way analysis of variance(ANOVA)test and Welch’s ANOVA test followed byholm-Sidak’smultiple comparisons test,one-wayANOVAwith repeatedmeasures followed by Bonferroni test,or kruskal-Wallis H test followed by Dunn’s multiple comparison test was used for multiple group comparisons and post hoc *** correlation coefficient test was conducted to analyze the relationship between two ***:Higher Ve was seen in IRE zone than in H-FIRE zone(0.14±0.02 vs.0.08±0.05,t=2.408,P=0.043)on day 4,but no significant difference was seen in ktrans or kep between IRE and H-FIRE zones at all time points(all P>0.05).For IRE zone,the greatest ktrans was seen on day 7,which was significantly higher than that on day 1(P=0.033).The ablation zone size of H-FIRE was significantly larger th

关键词： Irreversible electroporation High-frequency irreversible electroporation Dynamic contrast enhanced-magnetic resonance imaging Thermal damage

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两个非线性偏微分方程强解的持续性质

郑州大学学报（理学版） 2015年第1期47卷 14-23页

作者：贺婷婷马飞遥宁波大学数学系非线性科学研究中心浙江宁波315211

给出了两个非线性偏微分方程,即耦合的Camassa-holm-Novikov方程和两分量的Novikov方程强解的持续性质.通过构造权重函数,并利用Gronwall不等式,得到相关估计,从而证明了这两个偏微分方程的持续性质.

关键词： Camassa-holm-Novikov方程两分量的Novikov方程持续性质