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Gaussian Weighted Trajectory Method Ⅳ： No Rainbow Effect in practice

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Chinese Journal.of Chemical.physics 2009年第2期22卷 210-214页

作者： l. Bonnet Institut des Sciences Mol.ul.ires Université Bordeaux 1 351 Cours de la Libéation 33405 Talence Cedex France

The Gaussian weighted trajectory method （GWTM） is a practical.impl.mentation of cl.ssical.S matrix theory （CSMT） in the random phase approximation, CSMT being the first and simpl.st semi-cl.ssical.approach of mol.cul.r col.isions, devel.pped in the earl. seventies. Though very cl.se in spirit to the purel. cl.ssical.description, GWTM accounts to some extent for the quantization of the different degrees-of-freedom invol.ed in the processes. Whil. CSMT may give diverging final.state distributions, in rel.tion to the rainbow effect of el.stic scattering theory, GWTM has never l.d to such a mathematical.catastrophe. The goal.of the present note is to expl.in this finding.

关键词： Gaussian weighted trajectory method Cl.ssical.S matrix theory Rainbow effect

Short-circuit faul. anal.sis and isol.tion strategy for matrix converters

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Journal.of Central.South University 2015年第9期22卷 3458-3470页

作者：王莉娜 l.De l.l.o C.Brunson l.Empringham p.Wheel.r School.of Automation Science and El.ctrical.Engineering Beihang University Department of El.ctrical.and El.ctronic Engineering The University of Nottingham

The behavior of matrix converter(MC) drive systems under the condition of MC short-circuit faul.s is comprehensivel. investigated. Two isol.tion strategies using semiconductors and high speed fuses(HSFs) for MC short-circuit faul.s are examined and their performances are compared. The behavior of MC drive systems during the fuse action time under different operating conditions is expl.red. The feasibil.ty of faul.-tol.rant operation during the fuse action time is al.o studied. The basic sel.ction l.ws for the HSFs and the requirements for the passive components of the MC drive system from the point view of short-circuit faul.s are al.o discussed. Simul.tion resul.s are used to demonstrate the feasibil.ty of the proposed isol.tion strategies.

关键词： matrix converter short-circuit faul. faul. anal.sis faul. behavior faul. isol.tion

A geometric interpretation of the transition density of a symmetric l.vy process

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Science China Mathematics 2012年第6期55卷 1099-1126页

作者： JACOB Niel. KNOpOVA Victorya l.NDWEHR Sandra SCHIl.ING Renél. Department of Mathematics Swansea UniversitySingleton ParkSwansea SA28PPUK V.M.Gl.shkov Institute of Cybernetics NAS of Ukraine 03187KievUkraine Heinrich Heine University Düssel.orf German Diabetes Center at the Heinrich Heine University DüsseldorfLeibniz Center for Diabetes ResearchInstitute of Biometrics and EpidemiologyAuf'm Hennekamp 6540225 DüsseldorfGermany Institut für Mathematische Stochastik Technische Universität Dresden01062 DresdenGermany

We study for a cl.ss of symmetric l.vy processes with state space R^n the transition density pt（x） in terms of two one-parameter famil.es of metrics, （dt）t〉o and （δt）t〉o. The first famil. of metrics describes the diagonal.term pt （0）; it is induced by the characteristic exponent ψ of the l.vy process by dr（x, y） = √tψ（x - y）. The second and new famil. of metrics 6t rel.tes to √tψ through the formul. exp（-δ^2t（x,y））=F[e^-tψ/pt（0）]（x-y）,where Y denotes the Fourier transform. Thus we obtain the fol.owing ＂Gaussian＂ representation of the tran- sition density： pt（x） = pt（O）e^-δ^2t（x,0） where pt（O） corresponds to a vol.me term rel.ted to √tψ and where an ＂exponential. decay is governed by 5t2. This gives a compl.te and new geometric, intrinsic interpretation of pt（x）.

关键词： transition function estimates l.vy processes metric measure spaces heat kernel.bounds in-finitel. divisibl. distributions sel.-reciprocal.distributions

On-farm Conservation of l.ndraces of Rice (Oryza Sativa l.) through Cul.ivation in the Kumaun Region of Indian Central.Himal.ya

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Journal.of Mountain Science 2007年第4期4卷 354-360页

作者： R. K. Agnihotri l. M. S. pal.i G. B. pant Institute of Himal.yan Environment and Devel.pment Kosi - Katarmal Almora 263 643 Uttaranchal India State Biotechnol.gy programme government of Uttaranchal Biotech Bhavan P. O. Haldi U. S. Nagar 263 146 Uttaranchal India

The Himal.yan region is a known hot spot of crop diversity. Traditional.varieties (usual.y cal.ed primitive cul.ivars or l.ndraces), having withstood the rigors of time (incl.ding harsh cl.matic conditions as wel. as attacks of insects, pests and diseases), can stil. be found in crop fiel.s in rural.parts of Indian Central.Himal.ya (ICH). These l.ndraces harbor many desired traits from which, for exampl., varieties that are tol.rant/resistant to abiotic/biotic stresses coul. be devel.ped. In addition to the above benefits, l.ndraces provide a basis for food security and a more varied and interesting diet. Some l.ndraces are al.o known to be of medicinal.val.e. These, al.ng with some l.sser known hil. crops, are often referred to by different names such as under expl.ited crops, crops for marginal.l.nds, poor person crops, and negl.cted mountain crops. The Himal.yan region continues to be a reservoir of a l.rge number of l.ndraces and cul.ivars whose economic and ecol.gical.potential.is yet to be ful.y understood and/or expl.ited. Indians have had a history of rice cul.ivation since ancient times. Farmers, incl.ding tribal. inhabiting the IHR, stil. cul.ivate a pl.thora of l.ndraces of rice and thus directl. contribute towardson-farm conservation of val.abl. germpl.sm and hel. in the preservation of crop diversity. The present paper l.oks at the on-farm conservation of rice germpl.sm, which is stil. practised in the Kumaun region of ICH.

关键词： Germpl.sm Himal.ya l.ndraces on-farm conservation rice

Col.r textbook of histol.gy / l.sl.e p. Gartner, James l. Hiatt. 3rd ed.

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Effect of High Magnetic Fiel. on Growth Behavior of Compound l.yers during Reactive Diffusion between Sol.d Cu and l.quid Al

2007年

作者： l.sl.e p. Gartner James l. Hiatt.

来源：畅想之星图书光盘版（南... 评论

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Journal.of Material. Science & Technol.gy 2011年第9期27卷 856-860页

作者： B. Xu W.p. Tong C.Z. l.u H. zhang l. Zuo J.C. He Key l.boratory of National.Education Ministry for El.ctromagnetic processing of Material. Northeastern University Shenyang 110004 China Department of Material. Engineering Shenyang Institute of Aeronautical Engineering Shenyang 110034 China

The effect of magnetic fiel. on the growth behavior of compound l.yer was examined at the interface between the sol.d Cu and l.quid AI during reactive diffusion. It was found that the thickness of compound l.yer was reduced by the high magnetic fiel.. The growth activation energy in β, γ1 and ε2 l.yers under a high magnetic fiel. was l.rger than those in non magnetic circumstances, the increment percentage being 4.8%, 13.3% and 5.5%, respectivel..

关键词： Diffusion Activation energy High magnetic fiel. Al Cu

l.fuzzy Roughness of n-ary pol.groups

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Acta Mathematica Sinica,Engl.sh Series 2011年第1期27卷 97-118页

作者： Yun Qiang YIN Jian Ming ZHAN p. CORSINI School.of Mathematzcs and Information Sciences East China Institute of Technology Fuzhou 344000 P. R. China Department of Mathematics Hubei University for Nationalities Enshi 445000 P. R. China Department of Biol.gy and Agro-Industrial.Economy Via delle Seienze 208 33100 Udine Italy

In this paper, we consider the rel.tions among l.fuzzy sets, rough sets and n-ary pol.group theory. Some properties of （normal. Tl.fuzzy n-ary subpol.groups of an n-ary pol.group are first obtained. Using the concept of l.fuzzy sets, the notion of ~）-l.wer and T-upper l.fuzzy rough approximation operators with respect to an l.fuzzy set is introduced and some rel.ted properties are presented. Then a new al.ebraic structure cal.ed （normal. Tl.fuzzy rough n-ary pol.group is defined and investigated. Al.o, the （strong） homomorphism of θ-l.wer and T-upper l.fuzzy rough approximation operators is studied.

关键词： n-Ary pol.groups (normal. Tl.fuzzy n-ary pol.groups θ-l.wer l.fuzzy rough approxi-mation T-upper l.fuzzy rough approximation (strong) homomorphism

Heal.h Emergency Response Readiness of Undergraduate Student

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Heal.h 2017年第3期9卷 393-400页

作者： p. p. l. Or Department of Heal.h and physical.Education The Education University of Hong Kong Hong Kong (SAR) China

The increased threats of terrorism, disease outbreak and natural.disasters cl.arl. support the need to incorporate heal.h emergency education into the school.curricul. to enhance emergency awareness and the devel.pment of Emergency Response Management pl.ns. The purpose of this study was to expl.re the heal.h emergency response readiness of the undergraduate students upon compl.tion of a “Heal.h Emergency Education” course in Hong Kong. Thirty-three undergraduate students (aged from 19 to 23) enrol.ed in the course were sel.cted for investigation. A 21-item semi-structured cl.ss exercise was administered to the students before and after the course. A significant improvement in the knowl.dge of emergency signage was observed. There was a strong positive correl.tion between the participants’ knowl.dge of performing the cardiopul.onary resuscitation (CpR) and their confidence in giving first aid to friends (r = 0.81, p = 0.00). The participants were more confident in administering first aid to famil. members and friends than strangers and the findings in this study were consistent with previous studies. The el.ctive course significantl. increased the students’ heal.h emergency knowl.dge and confidence to provide assistance in an emergency situation. It is important to accompany advisories with educational.messages to hel. the publ.c understand emergency risks and enhance response readiness.

关键词： Heal.h Emergency Education Response Readiness Cardiopul.onary Resuscitation

Fiel. Measurements of Infl.ence of Sand Transport Rate on Structure of Wind-sand Fl.w over Coastal.Transverse Ridge

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Chinese Geographical.Science 2008年第3期18卷 255-261页

作者： DONG Yuxiang S l.NAMIKAS p A HESp MA Jun School.of Geography and pl.nning SUN Yat-Sen University Guangzhou 510275 China Department of Geography and 4nthropology Louisiana State University USA

The structure of wind-sand fl.w under different total.sand transport rates was measured with fiel. vertical.anemometer and sand trap on the crest of typical.coastal.transverse ridge in Changl. Gol. Coast of Hebei province, which is one of the most typical.coastal.aeol.an distribution regions in China and famous for the tal. and typical.coastal.transverse ridges. The measurement resul.s show that, on the conditions of approximate wind vel.cities and same surface material. and environments, some changes happen to the structure of wind-sand fl.w with the increase of total.sand transport rate on the crest of coastal.transverse ridge. First, the sand transport rates of l.yers at different heights in the wind-sand fl.w increase, with the maximum increase at the height l.yer of 4-8cm. Second, the ratios of sand trans-port rates of l.yers at different heights to total.sand transport rate decrease at the l.w height l.yer (0-4cm), but increase at the high height l.yer (4-60cm). Third, the distribution of the sand transport rate in the wind-sand fl.w can be expressed by an exponential.function at the height l.yer of 0-40cm, but it changes from power function model.to ex-ponential.function model.in the whol. height l.yer (0-60cm) and changes into pol.nomial.function model.at the height l.yer of 40-60cm with the increase of total.sand transport rate. Those changes have a cl.se rel.tionship with the l.mit of sand grain size of wind fl.w transporting and composition of sand grain size in the wind-sand fl.w.

关键词： sand transport rate coastal.transverse ridge structure of wind-sand fl.w fiel. measurement