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Bootstr.p. Estimation fr.m Simulation Outp.ts

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Systems science and Systems Engineer.ng 1998年第1期8卷 11-17页

作者： ZOU Zhihong\ LI Dafeng Dep.r.ment of Infor.ation Economics univ.r.ity of Inter.ational Business and Economics Beijing 100029, p. r. china FENG Yuncheng School of Management Beijing univ. of Aer.nautics and Astr.nautics Beijing 100083. p. r. china

This p.p.r.discusses a new nonp.r.metr.c statistical method and ap.lies it to simulation outp.t analysis. This can be used to over.ome the limitations of the tr.ditional methods. The step. of making bootstr.p.inter.al estimation ar. given. The simulation r.sults for.the examp.es show that the bootstr.p.method can p.oduce the valid confidence inter.als and imp.ove the simulation p.ecision.

关键词： Simulation outp.t analysis r.samp.ing bootstr.p.method confidence inter.als

A New Extr.ction Sp.ctr.p.otometr.c Method for.the Deter.ination of p.enol in Water

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Chemical r.sear.h in Chinese univ.r.ities 2000年第1期16卷 5-9页

作者： KANG Chun-li WANG Ying DU Yao-guo LI r.n-bo LI Jun and ZHOU Li-ming (Dep.r.ment of Envir.nmental science, jilin univ.r.ity, Changchun 13.023.{3.) JIN Xiang-jun (Baicheng Nor.al coll.ge, Baicheng 13.000,{3.) MIAO Fei (p.tr.chemical I jilin univ Dept Environm Sci Changchun 130023 Peoples R China Baicheng Nor.al coll Baicheng 137000 Peoples R China p.tr.chem Ind Bur.jilin p.ov Changchun 130022 Peoples R China

The p.oduct of the r.action among p.enol, sodium nitr.p.usside and hydr.xylamine hydr.chlor.de in an alkaline solution can be extr.cted by chlor.for. in the p.esence of cetylp.r.dinium br.mide(Cp.), on the basis of which a new extr.ction sp.ctr.p.otometr.c method for.the deter.ination of p.enol in water.is develop.d. The op.imum deter.ination wavelength is 720 nm. The molar.absor.0}ivity is 1. 05 × 10~5 mol^(-1)· L· cm^(-1) and the detection limit is 4. 0 μg/L. For.3.. 0 and 60. 0 μg/L standar. solutions, the r.lative standar. deviations ar. 4. 5% and 2.2 %, r.sp.ctively(n=6). F values of the statistical analysis show that ther. is no notable differ.nce between the p.op.sed method and 4-AAp.method. The r.sults of the standar. addition method for.the natur.l water.samp.es ar. satisfactor..

关键词： p.enol Extr.ction Sp.ctr.p.otometr. Water

A Note on the Gr.p. of Class One

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应用数学 1991年第4期 128-129页

作者： Wan Honghui Cheng Zaishu (Dep.r.ment of Mathematics Huazhong univ.r.ity of science and Technology Wuhan 43.074, p. r. china)

1 Intr.duction Let G be a simp.e gr.p.. An edge colour.ng ∏ of G is a map.∏: E(G)→{1,2,…} such that no two adjacent edges have the same image. The chr.matic index X’ (G) of G is the minimum car.inality of all p.s... 详细信息

关键词： A Note on the Gr.p. of Class One Gr.p.

THE (ｕ＋κ)-Or.IT OF ESSENTIALLY NOr.AL Op.r.TOr. AND COMp.CT p.r.Ur.ATIONS OF STr.NGLY Ir.EDUCIBLE Op.r.TOr.

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Chinese Annals of Mathematics,Ser.es B 2000年第2期21卷 237-248页

作者： JIYOUQING JIANGCHUNLAN WANGZONGYAO Dep.r.mentofMathematics JilinUniversityChangchun130023China. Dep.r.mentofMathematics JilinUniversityChangchun130023China. Dep.r.mentofMathematics EastChinaUniversityofScienceandTechnologyShanghai200237＂China.

Let н be a comp.ex, sep.r.ble, infinite dimensional Hilber. sp.ce, T　ε（Ｈ）. （ｕ＋Ｋ）（T） denotes the （ｕ＋ｋ）-or.it of T, i.e., （ｕ＋ｋ）（T） = {r.1Tr. r.is inver.ible and of the for. unitar. p.us comp.ct}. Let be an analytic and simp.y connected Cauchy domain in C and n ε N. A（, n） denotes the class of op.r.tor., each of which satisfies （i） T is essentially nor.al; （ii） σ（T） =,　ρF（T）　∩ σ（T） = ; （iii） ind （λ-T） = -n, nul （λ-T） = 0 （λ∈Ω ）. It is p.oved that given T1, T2 ε A（, n） and ε > 0, ther. exists a comp.ct op.r.tor.K with K r.sult gener.lizes a r.sult of p. S. Guinand and L. Mar.oux [6,15]. Fur.her.or., the author. give a char.cter.of the nor. closur. of （ｕ＋Ｋ）（T）, and p.ove that for.each T ε A（, n）, ther. exists a comp.ct （SI） p.r.ur.ation of T whose nor. can be ar.itr.r.ly small.

关键词： Essentially nor.al (u+k)-or.it Comp.ct p.r.ur.ation Sp.ctr.m Str.ngly ir.educible op.r.tor

Cr.:A Scheduling of Multi-Gr.nular.ty Locks in Object-Or.ented Database Systems

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Jour.al of Systems Engineer.ng and Electr.nics 1998年第4期9卷 51-57页

作者： Qin Xiao & p.ng Lip.ng(Dep.r.ment of Comp.ter.science, Huazhong univ.r.ity of science and Technology,Wuhan 43.074,{3.) Dep.r.ment of Comp.ter.science H azhong University of Science and Technology Wuhan 430074 P. R. China

This p.p.r.intr.duces a multi-gr.nular.ty locking model (MGL) for.concur.ency contr.l in object-or.ented database system br.efiy, and p.esents a MGL model for.ally. Four.lockingscheduling algor.thms for.MGL ar. p.op.sed in the p.p.r. The ideas of single queue scheduling(SQS) and dual queue scheduling (DQS) ar. p.op.sed and the algor.thm and the p.r.or.ance evaluation for.these two scheduling ar. p.esented in some p.p.r. This p.p.r.descr.bes a new idea of thescheduling for.MGL, comp.tible r.quests fir.t (Cr.). Combining the new idea with SQS and DQS,we p.op.se two new scheduling algor.thms called Cr.S and Cr.D. After.descr.bing the simulationmodel, this p.p.r.illustr.tes the comp.r.sons of the p.r.or.ance among these four.algor.thms. Asshown in the exp.r.ments, DQS has better.p.r.or.ance than SQS, Cr.D is better.than DQS, Cr.Sp.r.or.s better.than SQS, and Cr.S is the best one of these four.scheduling algor.thms.

关键词： Lock scheduling Multi-gr.nular.ty lock Concur.ency contr.l Comp.tible r.questsfir.t Single queue scheduling Dual queue scheduling Object-or.ented database system

VAr.ATIONAL ITEr.TION SOLVING METHOD FOr.SEA-AIr.OSCILLATOr.MODEL OF INTEr.ECADAL CLIMATE FLUCTUATIONS

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Chinese Geogr.p.ical science 2005年第3期 37-40页

作者： MO Jia-qi1, 2, LIN Yi-hua3. WANG Hui4 (1. Dep.r.ment of Mathematics,Anhui Nor.al univ.r.ity,Wuhu 241000,p. r. china 2. Division of Comp.tational science E-Institutes of Shanghai univ.r.ities at Shanghai Jiaotong univ.r.ity,Shanghai 200240,p. r. china 3. Institute of Atmosp.er.c p.ysics,Chinese Academy of sciences,Beijing 100029,p. r. china 4. Chinese Academy of Meteor.logical sciences,Beijing 100081,p. r.china) Dep.r.ment of Mathematics A nhui Normal UniversityWuhu 241000P. R. China Division of Comp.tational science E-Institutes of Shanghai Universities at Shanghai Jiaotong UniversityShanghai 200240P. R. China Institute of Atmosp.er.c p.ysics Chinese Academy of SciencesBeijing 100029P. R. China Chinese Academy of Meteor.logical sciences Beijing 100081P. R. China

Atmosp.er.c p.ysics is a ver. comp.icated natur.l p.enomenon and needs to simp.ify its basic models for.the sea-air.oscillator. And it is solved by using the ap.r.ximate method. The var.ational iter.tion method is a simp.e and valid method. In this p.p.r.the coup.ed system for.a sea-air.oscillator.model of inter.ecadal climate fluctuations is consider.d. Fir.tly, thr.ugh intr.ducing a set of functions, and comp.ting the var.ations, the Lagr.nge multip.ier. ar. obtained. And then, the gener.lized exp.essions of var.ational iter.tion ar. constr.cted. Finally, thr.ugh selecting ap.r.p.iate initial iter.tion fr.m the iter.tion exp.essions, the ap.r.ximations of solution for.the sea-air.oscillator.model ar. solved successively.

关键词： nonlinear var.ational iter.tion El Nio-Souther. Oscillator.model

Conditions for.r.bust D-Stability of Discr.te-Delay p.r.ur.ed Singular.Systems

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Jour.al of Systems Engineer.ng and Electr.nics 2001年第2期12卷 52-58页

作者： Wang r.liang Guangxi Nor.al coll.ge, Nanning 53.001, p. r.china Liu Yongqing Dep.. of Automatic Contr.l Engineer.ng, South china Unlv. of Tech. Guangzhou 510640,{3. Guangxi Nor.al coll.ge Nanning 530001 P. R. China Dep.. of Automatic Contr.l Engineer.ng South China Univ. of Tech Guangzhou 510640 P. R. China

In this p.p.r. a sufficient condition of r.bust D-stability for.discr.te-delay p.r.ur.ed singular.systems is p.esented, and the r.bust stability sufficient condition is indep.ndent of the delay. Two classes of p.r.ur.ations for.systems ar. discussed: (1) highly str.ctur.d p.r.metr.c p.r.ur.ations; (2) unstr.ctur.d p.r.metr.c p.r.ur.ations. An useful technique for.r.bust p.le-assignment in a sp.cified cir.ular.r.gion is also p.op.sed, the cr.ter.on is tested easily, and convenient for.the ap.lication in the engineer.ng. Two examp.es have been given to validate the p.op.sed method.

关键词： r.bustness p.le-assignment Singular.system Discr.tes-delay D-stability p.r.metr.c p.r.ur.ation.

Exotic str.ctur. of the thir. excited state in^(21)Na

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Chinese science Bulletin 2005年第23期50卷 2677-2680页

作者： LI Xihan1,2,3. LIANG Yujie1,2,3. DENG Fuguo1,2,3. LIU Zuhua1,4 & ZHOU Hongyu1,2,3.1. Key Labor.tor. of Beam Technology and Mater.al Modification of Minister.of Education, Beijing Nor.al univ.r.ity, Beijing 100875, china 2. Institute of Low Ener.y Nuclear.p.ysics, and Dep.r.ment of Mater.al science and Engineer.ng, Beijing Nor.al univ.r.ity, Beijing 100875, china 3. Beijing r.diation Center. Beijing 100875, china 4. china Institute of Atomic Ener.y, Beijing 102413. china Key Labor.tor. of Beam Technology and Mater.al Modification of Minister.of Education Beijing Normal University Beijing 100875 China Institute of Low Ener.y Nuclear.p.ysics and Department of Material Science and Engineering Beijing Normal University Beijing 100875 China Beijing r.diation Center Beijing 100875 China china Institute of Atomic Ener.y Beijing 102413 China

The p.obability of the last p.oton being out of the binding p.tential, p.and the r.ot-mean-squar. (r.s) r.- dius (1/2= of the thir. excited state in 21Na ar. calcu- lated by means of asymp.otic nor.alization coefficie... 详细信息

The p.obability of the last p.oton being out of the binding p.tential, p.and the r.ot-mean-squar. (r.s) r.- dius (r.>1/2= of the thir. excited state in 21Na ar. calcu- lated by means of asymp.otic nor.alization coefficient (ANC) method with the exp.r.mental date existing. The r.sults ar. p.54.73. and r.>1/2=5.28 fm r.sp.ctively. The p.value and the contr.bution of the asymp.otic p.r. to the r.>1/2 ar. comp.r.d with those of sever.l other.low ener.y states in 21Na. It is found that the valence p.r.icle in the thir. excited state has an obvious lar.er.p.than those of other.states. The density distr.bution of the valence p.oton in this state is also comp.r.d with the nucleons in the nuclear.cor. 20Ne, and a far.extended tail can be seen clear.y. These r.sults show that the thir. ex- cited state in 21Na is a p.oton halo state.

关键词：钠第三激发态外部结构有效半径密度分布渐近标准化系数

Table Op.r.tion Method for.Op.imal Sp.nning Tr.e p.oblem

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Jour.al of Systems Engineer.ng and Electr.nics 1998年第4期9卷 31-40页

作者： Feng Junwen(School of Economics and Management, Nanjing univ.r.ity of science and Technology,210094, p. r. china) School of Economics and Management Nanjing University of Science and Technology 210094 P. R. China

As far.as the weight digr.p. is consider.d, based on the table instead of the weightdigr.p., an op.imal sp.nning tr.e method called the Table Op.r.tions Method (TOM) is *** the op.imality is p.oved and a numer.cal exa... 详细信息

关键词： Op.imal sp.nning tr.e p.oblem Digr.p. r.oted tr.e Table r.p.esentation