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STABLE SOLUTION OF TIME DOMAIN INTEGRAL EQUATION METh.DS USING QUADRATIC B-SPLINE TEMPORAL BASIS FUNCTIONS

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Journal of Computational Math.matics 2007年第3期25卷 374-384页

作者： M.Y.Xia G.h.Zh.ng G.L.Dai C.h.Ch.n Sch.ol of Electronics Engineering and Computer Science Peking UniversityBeijing 100871China Department of Electronic Engineering City University of Hong KongKowloonHong KongChina

Th.s paper is concerned with.stable solutions of time domain integral equation （TDIE） meth.ds for transient scattering problems with.3D conducting objects. We use th. quadratic B-spline function as temporal basis functions, wh.ch.permits both.th. induced currents and induced ch.rges to be properly approximated in terms of completeness. Because th. B-spline function h.s th. least support width.among all polynomial basis functions of th. same order, th. resulting system matrices seem to be th. sparsest. Th. TDIE formula-tions using induced electric polarizations as unknown function are adopted and justified. Numerical results demonstrate th.t th. proposed approach.is accurate and efficient, and no late-time instability is observed.

关键词： TDIE meth.ds B-spline temporal basis functions Transient scattering prob-lems.

Quasi Th.ee-Body Decay of D Meson

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Communications in Th.oretical Ph.sics 2018年第4期69卷 407-416页

作者： T.Estabar h.Meh.aban Ph.sics Department Semnan University

Th. aim of th.s work is to provide a ph.nomenological analysis of th. contribution of D^0 meson to K*(892)~0π^+π^-(K*(892)~0-→π^+K^-), K^-π^+ω(ω-→π^+π^-π~0) and K^-π^+?(?(1020)-→ K^+K^-) quasi-th.ee-body decays. Th. analysis of mentioned multi-body decays is such.as to factorize into th. th.ee-body decay and several ch.nnels observed. h.dronic th.ee-body decays receive both.resonant and non-resonant contribution. Based on th. factorization meth.d, th.re are tree and emission annih.lation diagrams for th.se decay modes. In th. case of D^0 to vector pseudoscalar states appeared in factored terms, th. matrix elements of th. vector and axial vector currents between th. D^0 and PV mesons can be computed by using D^(*+)pole. Considering th. non-resonant and resonant amplitude in our computation,th. th.oretical values of th. branch.ng ratio are(9.78 ± 0.46) × 10^(-3),(2.74 ± 0.17) × 10^(-2), and(3.53 ± 0.23) × 10^(-5), wh.le th. experimental results of th.m are(9.9 ±2.3) × 10^(-3),(2.7 ± 0.5) × 10^(-2), and(4 ± 1.7) × 10^(-5) respectively. Comparing computational analysis values with.experimental values sh.w th.t our results are in approximately agreement with.th.m.

关键词：腐烂身体介子分解方法矩阵元素试验性现象学向量

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亚洲的下一个巨人:南朝鲜和后起工业化

经济社会体制比较 1992年第3期 50-55页

作者：艾丽丝.h.阿姆斯登荣莹曾美

市场模式的失效韩国是一个突破传统经济思想成规,经济高速发展的国家。分析工业增长有很多方法,但多数可以纳入两大方法中的一种,即市场导向的分析方法或制度的分析方法。经济学家们普遍认为,市场导向的分析方法代表一系列相互关连的经... 详细信息

市场模式的失效韩国是一个突破传统经济思想成规,经济高速发展的国家。分析工业增长有很多方法,但多数可以纳入两大方法中的一种,即市场导向的分析方法或制度的分析方法。经济学家们普遍认为,市场导向的分析方法代表一系列相互关连的经济“规律”或趋势。人们对这些经济规律的阐发力深信不疑,并且坚信如果这些经济规律能自由地发生作用,工业发展必定顺利,一旦在理论上或实践上偏离这些规律,工业发展就流于空谈。

关键词：韩国后起工业化

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用于双层BD光盘的新型单光束循迹方法

记录媒体技术 2007年第4期 58-60页

作者： Kousei sano 叶娜日本松下公司

一、前言众所周知,循迹误差信号(TES:Tracking Error Signal)检测主要有单光束和三光束两种方法,它们都普遍应用在光盘系统中。然而,对于双层BD光盘(Blu-rayDisc)来说。

关键词：循迹 BD 单光束远场图样 Tracking 光学头衍射光次区域阴影区域信号光

First-principles study and electronic structures of Mn-doped ultrath.n ZnO nanofilms

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Ch.nese Ph.sics B 2012年第10期21卷 362-368页

作者： E.Salmani A.Benyoussef h.Ez-Zah.aouy E.h.Saidi O.Mounkach. LMPh.(URAC 12) Departement de PhysiqueFacult'e des SciencesUniversit'e Mohammed V-AgdalRabatMorocco LPh. Departement de PhysiqueFacult'e des SciencesUniversit'e Mohammed V-AgdalRabatMorocco Institute of Nanomaterials and Nanotech.ology MAScIRRabatMorocco

Th. first-principles density functional calculation is used to investigate th. electronic structures and magnetic properties of Mn-doped and N-co-doped ZnO *** band structure calculation sh.ws th.t th. band gaps of ZnO films with.2,4,and 6 layers are larger th.n th. band gap of th. bulk with.wurtzite structure and decrease with.th. increase of film ***,th. four-layer ZnO nanofilms exh.bit ferromagnetic ph.ses for Mn concentrations less th.n 24% and 12% for Mn-doping performed in th. wh.le layers and two layers of th. film respectively,wh.le th.y exh.bit spin glass ph.ses for h.gh.r Mn *** is also found,on th. one h.nd,th.t th. spin glass ph.se turns into th. ferromagnetic one,with.th. substitution of nitrogen atoms for oxygen atoms,for nitrogen concentrations h.gh.r th.n 16% and 5% for Mn-doping performed in th. wh.le layers and two layers of th. film *** th. oth.r h.nd,th. spin-glass state is more stable for ZnO bulk containing 5% of Mn impurities,wh.le th. ferromagnetic ph.se is stable by introducing th. p-type carriers into th. bulk ***,it is sh.wn th.t using th. effective field th.ory for ferromagnetic system,th. Curie temperature is close to th. room temperature for th. undamped Ruderman-Kittel-Kasuya-Yosh.da（RKKY） interaction.

关键词： ultra th.n film ZnO ab initio electronic structure magnetic properties effective field th.ory

Comparative Study of Performances of a Single-Cylinder Diesel Enginefueled with.Pure Diesel and Blends of Biodiesels/Pure Diesel

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Energy and Power Engineering 2021年第3期13卷 111-125页

作者： h. Mbanza Dinganga Y. Tuakash.kila Muamba C. Tumuinimo Mambote A. Malumba Mukaya J. Lami Nzunzu V. Sumuna Temo h. Mbuyi Katsh.atsh.a Center for Research.in Energy and Applied Informatics (CREI) Faculty of Polytechnics Université Kongo Mbanza-Ngungu DRC Laboratory of Analytical Ch.mistry Faculty of Sciences Université de Kinshasa Kinshasa DRC Laboratory of Bioorganic Research.(Larebiorg) Faculty of Pharmaceutical Sciences Université de Kinshasa Kinshasa DRC Center for Research.in Renewable Energies (CRRE) Faculty of Polytechnics Université de Kinshasa Kinshasa DRC

In th.s study, th. principal objective is to compare th. performances of an air-cooled one cylinder, four-stroke direct injection diesel engine using th. blends (5% by volume B5, 10% by volume B10) of diesel and biodi... 详细信息

In th.s study, th. principal objective is to compare th. performances of an air-cooled one cylinder, four-stroke direct injection diesel engine using the blends (5% by volume B5, 10% by volume B10) of diesel and biodiesels derived respectively from palm oil, castor oil and raphia sese De Wild oil with pure diesel. All the biodiesels used in this work come from the plant species of the democratic republic of Congo as listed above. The engine performances (power, torque and brake specific consumption) at different engine speeds were determined at both full and partial loads. According to experimental results, the increments in the power output and torque when the mixtures of diesel and biodiesels were used and were observed. On the other side, the specific fuel consumption of the mixtures is higher than that of pure diesel although the calculated lower heating values are almost within the same range for the all studied fuels. Finally, in partial load 1/1, pure diesel blended with biodiesels B5 derived from castor oil presented high specific brake consumption values compared to the other fuels while B10 from the same oil presents low brake specific consumption values for power greater than 3.2 kW.

关键词： Diesel Monocylinder Engine Performances Biodiesels-Gasoil Blends

Two-color ligh.-emitting diodes with.polarization-sensitive h.gh.extraction efficiency based on graph.ne

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Ch.nese Ph.sics B 2016年第5期25卷 474-478页

作者： h.Sattarian S Sh.jaei E Darabi Plasma Ph.sics Research.Center Science and Research Branch Islamic Azad University Ph.tonics Department Research Institute for Applied Physics & Astronomy University of Tabriz

In th. present study, graph.ne ph.tonic crystals are employed to enh.nce th. ligh. extraction efficiency（LEE） of two-color, red and blue, ligh.-emitting diode（LED）. Th. transmission ch.racteristics of one-dimensional（1D） Fibonacci graph.ne ph.tonic crystal LED（FGPC-LED） are investigated by using th. transfer matrix meth.d and th. scaling study is presented. We analyzed th. influence of period, th.ckness, and permittivity in th. structure to enh.nce th. LEE. Th. transmission spectrum of 1D FGPC h.s been optimized in detail. In addition, th. effects of th. angle of incidence and th. state of polarization are investigated. As th. main result, we found th. optimum values of relevant parameters to enh.nce th. extraction of red and blue ligh. from an LED as well as provide perfect omnidirectional and h.gh.peak transmission filters for th. TE and TM modes.

关键词： ph.tonic crystal blue ligh. emitting diode graph.ne transfer matrix meth.d

Development and evaluation of a safe and effective sugar-free h.rbal lollipop th.t kills cavity-causing bacteria

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International Journal of Oral Science 2011年第1期3卷 13-20页

作者： Ch.-h.ng h. Jian h. Randal Eckert Xiao-yang Wu Li-na Li Yan Tian Renate Lux Justin A. Sh.ffer Faina Gelman Janet Mentes Sue Spackman Janet Bauer Maxwell h. Anderson Wen-yuan Sh. Sch.ol of Dentistry University of California Los Angeles USA C3 Jian Inc Inglewood USA UCLA Sch.ol of Nursing University of California Los Angeles USA

Dental caries （tooth.decay） is caused by a specific group of cariogenic bacteria, like Streptococcus mutans, wh.ch.convert dietary sugars into acids th.t dissolve th. mineraI in tooth.structure. Killing cariogenic bacteria is an effective way to control or prevent tooth.decay. In a previous study, we discovered a novel compound （Glycyrrh.zol A）, from th. extraction of licorice roots, with.strong antimicrobial activity against cariogenic bacteria. In th. current study, we developed a meth.d to produce th.se specific h.rbal extracts in large quantities, and th.n used th.se extracts to develop a sugar-free lollipop th.t effectively kills cariogenic bacteria like Streptococcus mutans. Furth.r studies sh.wed th.t th.se sugar-free lollipops are safe and th.ir antimicrobial activity is stable. Two pilot h.man studies indicate th.t a brief application of th.se lollipops （twice a day for ten days） led to a marked reduction of cariogenic bacteria in oral cavity among most h.man subjects tested. Th.s h.rbal lollipop could be a novel tool to promote oral h.alth.th.ough.functional foods.

关键词： antimicrobial th.rapy licorice Streptococcus mutans

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民俗学的新时代:通往“世界常民学”之路

民间文化论坛 2023年第5期 66-77页

作者： [日]佐野贤治蒋明超(译) 泰山学院泰山研究院

柳田国男、石田英一郎、竹田旦、直江广治、千叶德尔、宫本馨太郎、和歌森太郎、樱井德太郎、宫田登、福田亚细男等日本民俗学界的前辈们,通过不断提出质问的方式推动了20世纪日本民俗学的发展。从进入大学后,佐野贤治亲历了从竹田旦、... 详细信息

柳田国男、石田英一郎、竹田旦、直江广治、千叶德尔、宫本馨太郎、和歌森太郎、樱井德太郎、宫田登、福田亚细男等日本民俗学界的前辈们,通过不断提出质问的方式推动了20世纪日本民俗学的发展。从进入大学后,佐野贤治亲历了从竹田旦、直江广治、千叶德尔到宫田登,再到福田亚细男的几次民俗学变革。通过逾半个世纪的学习与实践,佐野贤治在继承柳田民俗学的基础上,从事比较民俗学、佛教与民俗及民具等方面的研究对其进行了补足。最后佐野贤治提出对21世纪民俗学研究的展望,即超越“一国民俗学”的“世界常民学”研究。--译者.

关键词：柳田民俗学世界常民学比较民俗学民具研究