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Results on Local times of a Class of Multiparameter Gaussian Processes

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Acta Mathematicae Applicatae Sinica 2006年第1期22卷 81-90页

作者： Zong-mao Cheng xiu-y.n Wang Zheng-y.n Lin Department of Mathematics Zhejiang University Hangzhou 310028 China Hangzhou Dianzi University Hangzhou 310018 China

In this paper, we introduce a class of Gaussian processes y.{y.t）：t∈R^N},the so called hifractional Brownian motion with the indcxes H=（H1,…,HN）and α. We consider the （N, d, H, α） Gaussian random field x（t） = （x1 （t）,..., xd（t））,where X1 （t）,…, Xd（t） are independent copies of y.t）, At first we show the existence and join continuity.of the local times of X = {X（t）, t ∈ R＋^N}, then we consider the HSlder conditions for the local times.

关键词： Bi-fractional Brownian motiom local time Gaussian random field

Effect of ageing treatment on microstructures,mechanical properties and corrosion behavior of Mg-Zn-RE-Zr alloy.micro-alloy.d with Ca and Sr

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China Foundry 2021年第2期18卷 131-140页

作者： y. Fu Chen Liu Hai Hao y.ng-dong Xu xiu-rong Zhu Ningbo Branch of China Academy.of Ordnance Science Ningbo 315103China School of Materials Science and Engineering Dalian University of TechnologyDalian 116024China

Effects of ageing treatment on the microstructures,mechanical properties and corrosion behavior of the Mg-4.2Zn-1.7RE-0.8Zr-xCa-y.r[x=0,0.2(wt.%),y.0,0.1,0.2,0.4(wt.%)]alloy. were *** showed that Ca or/and Sr additions promoted the precipitation hardening behavior of Mg-4.2Zn-1.7RE-0.8Zr alloy.and shortened the time to reaching peak hardness from 13 h to 12 *** maximum hardness of 77.1±0.6 HV for the peak-aged Mg-4.2Zn-1.7RE-0.8Zr-0.2Ca-0.2Sr alloy.was *** microstructures of peak-aged alloy. mainly.consist ofα-Mg phase,Mg_(51)Zn_(20) phase and ternary.*** Zn-Zr phase is formed within theα-Mg matrix,and the Mg_(2)Ca phase is formed near t-phase due to the enrichment of Ca in front of the solid-liquid ***,fine short rod-shapedβ′1 phase is precipitated within theα-Mg matrix in the peak-aged *** peak-aged Mg-4.2Zn-1.7RE-0.8Zr-0.2Ca-0.2Sr alloy.exhibits optimal mechanical properties with an ultimate tensile strength of 208 MPa,y.eld strength of 150 MPa and elongation of 3.5%,which is mainly.attributed to precipitation *** addition,corrosion properties of experimental alloy. in the 3.5wt.%NaCl solution were studied by.the electrochemical tests,weight loss,hy.rogen evolution measurement and corrosion morphology.*** results suggest that peak-aged alloy. show reduced corrosion rates compared with the as-cast alloy.,and minor additions of Ca and/or Sr improve the corrosion resistance of the Mg-4.2Zn-1.7RE-0.8Zr *** peak-aged Mg-4.2Zn-1.7RE-0.8Zr-0.2Ca-0.2Sr alloy.possesses the best corrosion resistance,which is mainly.due to the continuous and compact barrier wall constructed by.the homogeneous and continuous second phases.

关键词： magnesium alloy. age-hardening microstructure mechanical properties corrosion resistance

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论本科层次职业教育人才培养的类型属性

职业教育研究 2024年第1期 35-41页

作者：向丽丽石锦秀周娟包靓靓浙江广厦建设职业技术大学浙江东阳322100

厘清本科层次职业教育人才培养类型属性是回应新时代高质量发展对技术技能人才新诉求的关键。当前,本科层次职业教育人才培养存在类型定位模糊不清,培养目标区分不明,培养规格要求有待更新和提高,尚未建立“以人为本”的、开放的新型生... 详细信息

厘清本科层次职业教育人才培养类型属性是回应新时代高质量发展对技术技能人才新诉求的关键。当前,本科层次职业教育人才培养存在类型定位模糊不清,培养目标区分不明,培养规格要求有待更新和提高,尚未建立“以人为本”的、开放的新型生态教育系统等问题。从人才培养类型、人才培养层次、人才培养目标及人才服务面向等维度深度剖析其与普通本科、专科层次职业教育的属性差异,从而明晰其本质属性——人才层次高等性、知识结构职业性、专业技能复合性、职业岗位适应性等。

关键词：本科层次职业教育专科层次职业教育普通本科人才培养类型属性

Observation of e^+e^-→D_s^+■^((*)0)K^- and study.of the P-wave D_s mesons

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Chinese Phy.ics C 2019年第3期43卷 5-16页

作者： M.Ablikim M.N.Achasov S.Ahmed M.Albrecht M.Alekseev A.Amoroso F.F.An Q.An y.Bai O.Bakina R.Baldini Ferroli y.Ban K.Begzsuren D.W.Bennett J.V.Bennett N.Berger M.Bertani D.Bettoni F.Bianchi I.Boy.o R.A.Briere H.Cai X.Cai A.Calcaterra G.F.Cao S.A.Cetin J.Chai J.F.Chang W.L.Chang G.Chelkov G.Chen H.S.Chen J.C.Chen M.L.Chen S.J.Chen y.B.Chen W.S.Cheng G.Cibinetto F.Cossio H.L.Dai J.P.Dai A.Dbey.si D.Dedovich Z.y.Deng A.Denig I.Deny.enko M.Destefanis F.De Mori y.Ding C.Dong J.Dong L.y.Dong M.y.Dong Z.L.Dou S.X.Du J.Z.Fan J.Fang S.S.Fang y.Fang R.Farinelli L.Fava F.Feldbauer G.Felici C.Q.Feng M.Fritsch C.D.Fu y.Fu Q.Gao X.L.Gao y.N.Gao y.G.Gao Z.Gao B.Garillon I.Garzia A.Gilman K.Goetzen L.Gong W.X.Gong W.Gradl M.Greco L.M.Gu M.H.Gu S.Gu y.t.Gu A.Q.Guo L.B.Guo R.P.Guo y.P.Guo A.Guskov Z.Haddadi S.Han X.Q.Hao F.A.Harris K.L.He F.H.Heinsius t.Held y.K.Heng Z.L.Hou H.M.Hu J.F.Hu t.Hu y.Hu G.S.Huang J.S.Huang X.t.Huang X.Z.Huang Z.L.Huang N.Huesken t.Hussain W.Ikegami Andersson W.Imoehl M.Irshad Q.Ji Q.P.Ji X.B.Ji X.L.Ji H.L.Jiang X.S.Jiang X.y.Jiang J.B.Jiao Z.Jiao D.P.Jin S.Jin y.Jin t.Johansson N.Kalantar-Nay.stanaki X.S.kang M.Kavat.y.k B.C.Ke I.K.Keshk t.Khan A.Khoukaz P.Kiese R.Kiuchi R.Kliemt L.Koch O.B.Kolcu B.Kopf M.Kuemmel M.Kuessner A.Kupsc M.Kurth W.Kühn J.S.Lange P.Larin L.Lavezzi H.Leithoff C.Li Cheng Li D.M.Li F.Li F.y.Li G.Li H.B.Li H.J.Li J.C.Li J.W.Li Ke Li L.K.Li Lei Li P.L.Li P.R.Li Q.y.Li W.D.Li W.G.Li X.L.Li X.N.Li X.Q.Li Z.B.Li H.Liang y.F.Liang y.t.Liang G.R.Liao L.Z.Liao J.Libby.C.X.Lin D.X.Lin B.Liu B.J.Liu C.X.Liu D.Liu D.y.Liu F.H.Liu Fang Liu Feng Liu H.B.Liu H.L Liu H.M.Liu Huanhuan Liu Huihui Liu J.B.Liu J.y.Liu K.y.Liu Kai Liu Ke Liu Q.Liu S.B.Liu X.Liu y.B.Liu Z.A.Liu Zhiqing Liu y.F.Long X.C.Lou H.J.Lu J.D.Lu J.G.Lu y.Lu y.P.Lu C.L.Luo M.X.Luo P.W.Luo t.Luo X.L.Luo S.Lusso X.R.Ly. F.C.Ma H.L.Ma L.L.Ma M.M.Ma Q.M.Ma X.N.Ma X.X.Ma X.y.Ma y.M.Ma F.E.Maas M.Maggiora S.Maldaner Q.A.Malik A.Mangoni y.J.Mao Z.P.Mao S.Marcello Z.X.Meng J.G.Messchendorp G.Mezzadri J.Min t.J.Min R.E.Mitchell X.H.Mo y Institute of High Energy.Phy.ics Beijing 100049China Beihang University Beijing 100191China Beijing Institute of Petrochemical technology Beijing 102617China Bochum Ruhr-University D-44780 BochumGermany Carnegie Mellon University PittsburghPennsylvania 15213USA Central China Normal University Wuhan 430079China China Center of Advanced Science and technology Beijing 100190China COMSAtS University.Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200443China G.I.Budker Institute of Nuclear Phy.ics SB RAS(BINP) Novosibirsk 630090Russia GSI Helmholtzcentre for Heavy.Ion Research GmbH D-64291 DarmstadtGermany Guangxi Normal University Guilin 541004China Guangxi University Nanning 530004China Hangzhou Normal University Hangzhou 310036China Helmholtz Institute Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Henan Normal University Xinxiang 453007China Henan University.of Science and technology Luoyang 471003China Huangshan College Huangshan 245000China Hunan Normal University Changsha 410081China Hunan University Changsha 410082China Indian Institute of technology.Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA INFN Laboratori Nazionali di Frascati I-00044FrascatiItaly INFN Sezione di Ferrara I-44122FerraraItaly Institute of Phy.ics and technology Peace Ave.54BUlaanbaatar 13330Mongolia Johannes Gutenberg University.of Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Joint Institute for Nuclear Research 141980 DubnaMoscow regionRussia Justus-Liebig-Universitaet Giessen II.Physikalisches InstitutHeinrich-Buff-Ring 16D-35392 GiessenGermany KVI-CARt University of GroningenNL-9747 AA GroningenThe Netherlands Lanzhou University Lanzhou 730000China Liaoning University Shenyang 110036China Nanjing Normal University Nanjing 210023China Nanjing University Nanjing 210093China Nankai University Tianjin 300071China Peking University Beijing 100871China Shandong University Jinan 250100China Shanghai

Studies of e^+e~→D_s^+■^((*)0)K^-and the P-wave charmed-strange mesons are performed based on an e^+e^-collision data sample corresponding to an integrated luminosity.of 567 pb^(-1) collected with the BESIII detector at s^(1/2)=4.600 GeV. the processes of e^+e^-→D_s^+■^(*0)K^- and D_s^+■~0K^- are observed for the first time and are found to be dominated by.the modes D_s^+D_(s1)(2536)^-and D_s^+D_(s2)~*(2573)^-, respectively. the Born cross sections are measured to be σ~B(e^+e^-→D_s^+■^(*0)K^-) =(10.1±2.3±0.8) pb and σ~B(e^+e^-→D_s^+■~0K^-) =(19.4±2.3± 1.6) pb, and the products of Born cross section and the decay.branching fraction are measured to be σ~B(e^+e^-→D_s^+D_(s1)(2536)^-+c.c.)·B(D_(s1)(2536)^-→■^(*0)K^-)=(7.5±1.8±0.7) pb and σ~B(e^+e^-→D_s^+D_(s2)~*(2573)^-+ c.c.)·B(D_(s2)~*(2573)^-→■~0 K^-)=(19.7 ± 2.9 ±2.0) pb. For the D_(s1)(2536)^-and D_(s2)~*(2573)^-mesons, the masses and widths are measured to be M(D_(s1)(2536)^-)=(2537.7±0.5 ±3.1) MeV/c2, Γ(D_(s1)(2536)^-) =(1.7 ±1.2 ±0.6)MeV, and M(D_(s2)~*(2573)^-)=(2570.7±2.0 ±1.7) MeV/c^2, Γ(D_(s2)~*(2573)^-)=(17.2 ±3.6 ±1.1) MeV. the spin-parity.of the D_(s2)~*(2573)^-meson is determined to be J^p= 2^+. In addition, the processes e^+e^-→D_s^+■^((*)0)K^-are searched for using the data samples taken at four(two) center-of-mass energies between 4.416(4.527) and 4.575 GeV, and upper limits at the 90% confidence level on the cross sections are determined.

关键词： cross section P-wave D_s mesons resonance parameters spin-parity BESIII

黑龙江大宗作物估产模型:以水稻、大豆、玉米为例

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科学技术与工程 2024年第9期24卷 3638-3645页

作者：杨子毅朱秀芳代佳佳姬忠林潘耀忠北京师范大学地理科学学部遥感科学与工程研究院北京100875 青海师范大学地理科学学院西宁810008 聊城大学地理与环境学院聊城252000

建立黑龙江省的大宗作物的估产模型,对于及时掌握该省的农情有积极作用,同时可以为其他区域的估产建模提供方法参考。首先计算了趋势单产、农业气候指标、遥感类指标、种植波动指标。然后,针对3种作物(大豆、玉米、水稻)进行估产分区,... 详细信息

建立黑龙江省的大宗作物的估产模型,对于及时掌握该省的农情有积极作用,同时可以为其他区域的估产建模提供方法参考。首先计算了趋势单产、农业气候指标、遥感类指标、种植波动指标。然后,针对3种作物(大豆、玉米、水稻)进行估产分区,在各分区内联合使用随机森林和留一法筛选建模变量。最后,统计基于留一法建立的所有模型的平均绝对相对精度(mean absolute relative precision,MARE)的最大值、最小值、均值和均方根误差,以此来反映最终建模的精度和稳定性。结果表明:针对大豆、水稻和玉米,黑龙江分别被分成了3、3和4个估产子区;变量筛选的结果显示趋势单产的重要性>归一化植被指数(normalized difference vegetation index,NDVI)距平的重要性>积温距平的重要性>Z指数的重要性;除玉米1区以外,针对3种作物建立的模型的最终MARE均小于10%,且所有模型的MARE的方差均小于0.05%。所建模型能够准确预测不同农业气候状况下的作物单产,可以为精细化筛选变量进行估产建模提供方法参考。

关键词：估产随机森林估产分区留一法大宗作物

脑转移瘤的影像组学特征：EGFR突变状态的预测

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国际医学放射学杂志 2021年第5期 607-608页

作者： G.y.Wang B.Wang Z.Wang W.C.Li J.J.xiu Z.Liu 李柯颖

摘要目的利用基于脑转移瘤的MR影像组学特征预测原发的肺腺癌中表皮生长因子受体(EGFR)突变状态,并探讨预测EGFR突变的最佳MR序列。方法回顾性分析52

关键词：

In situ Raman,FtIR,and XRD spectroscopic studies in fuel cells and rechargeable batteries

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Nano Research 2023年第4期16卷 4855-4866页

作者： Fan Gao Xiang-Dong tian Jia-Sheng Lin Jin-Chao Dong xiu-Mei Lin Jian-Feng Li Xiamen Cardiovascular Hospital State Key Laboratory of Physical Chemistry of Solid SurfacesCollege of Chemistry and Chemical EngineeringCollege of EnergyXiamen UniversityXiamen 361005China Department of Chemist.y.and Environment Science Fujian Province University Key Laboratory of Analytical ScienceMinnan Normal UniversityZhangzhou 363000China

As state-of-the-art electrochemical energy.conversion and storage(EECS)techniques,fuel cells and rechargeable batteries have achieved great success in the past ***,modern societies’ever-growing demand in energy.calls for EECS devices with high efficiency.and enhanced performance,which mainly.rely.on the rational design of cataly.ts,electrode materials,and electrode/electroly.e interfaces in EESC,based on in-deep and comprehensive mechanistic understanding of the relevant electrochemical redox *** an understanding can be realized by.monitoring the dy.amic redox reaction processes under realistic operation conditions using in situ techniques,such as in situ Raman,Fourier transform infrared(FtIR),and X-ray.diffraction(XRD)*** techniques can provide characteristic spectroscopic information of molecules and/or cry.tals,which are sensitive to structure/phase changes resulted from different electrochemical working conditions,hence allowing for intermediates identification and mechanisms *** review described and summarized recent progress in the in situ studies of fuel cells and rechargeable batteries via Raman,FtIR,and XRD *** applications of these in situ techniques on ty.ical electrocataly.ic electrooxidation reaction and oxy.en reduction reaction(ORR)in fuel cells,on representative high capacity.and/or resource abundance cathodes and anodes,and on the solid electroly.e interface(SEI)in rechargeable batteries are *** discuss how these techniques promote the development of novel EECS sy.tems and highlight their critical importance in future EECS research.

关键词： in situ spectroscopy Raman Fourier transform infrared spectroscopy.FtIR) X-ray.diffraction(XRD) fuel cells rechargeable batteries

木薯SDH蛋白的序列分析及其与MeH1.2关系的研究

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生物技术通报 2024年第9期40卷 74-81页

作者：赵平娟林晨俞王梦月张秀春李淑霞阮孟斌中国热带农业科学院热带生物技术研究所热带作物生物育种国家重点实验室海口571101 中国热带农业科学院三亚研究院三亚572024

【目的】山梨糖醇脱氢酶(SDH)在调控蔷薇科植物果糖和山梨醇转化中起重要作用,也参与植物对逆境的应答过程,木薯SDH功能的研究可以为培育优质木薯种质提供理论基础。【方法】以‘SC124’的cDNA为模板克隆木薯SDH基因,并利用实时荧光定量... 详细信息

【目的】山梨糖醇脱氢酶(SDH)在调控蔷薇科植物果糖和山梨醇转化中起重要作用,也参与植物对逆境的应答过程,木薯SDH功能的研究可以为培育优质木薯种质提供理论基础。【方法】以‘SC124’的cDNA为模板克隆木薯SDH基因,并利用实时荧光定量PCR分析木薯SDH基因的组织特异性及其对干旱、低温、PEG和ABA的响应模式。通过筛选木薯干旱和低温混合的酵母cDNA文库,并利用y.H点对点及其双分子荧光互补(BiFC)实验确认与目标蛋白的关系。【结果】木薯SDH基因CDS全长1092 bp,编码364个氨基酸,与数据库中的序列无差异。MeSDH蛋白含有催化锌结合位点,NADP结合位点,结构锌结合位点,属于MDR超家族。烟草叶片表皮细胞瞬时表达显示MeSDH蛋白定位于细胞核。MeSDH基因的表达量在功能叶、幼嫩叶、须根和茎中依次降低。MeSDH基因受干旱、低温和PEG胁迫诱导在木薯叶片上调表达,在ABA处理后的木薯叶片和根系中都显著上调表达。文库筛选、y.H点对点和BiFC实验证实MeH1.2与MeSDH互作。【结论】MeSDH基因可以响应多种胁迫上调表达,并可能在蛋白水平和MeH1.2共同作用。

关键词：木薯 SDH基因 MeH1.2蛋白抗逆性蛋白互作

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Should peri-gastrectomy.gastric acidity.be our focus among gastric cancer patients?

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World Journal of Gastroenterology 2014年第22期20卷 6981-6988页

作者： Lei Huang A-Man Xu tuan-Jie Li Wen-xiu Han Jing Xu Department of General Surgery the First Affiliated Hospital of Anhui Medical University Department of General Surgery NanFang Hospital of Southern Medical University

AIM: to investigate the necessity.and correctness of acid suppression pre- and post-gastrectomy.among gastric carcinoma (GC) patients.

关键词： Gastric carcinoma Gastrectomy Reflux Acidity Gastrointestinal juice