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K-Functional, Weighted Moduli of Smoothness, and Best Weighted p.lynomial Ap.r.ximation on a Simp.ex

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Acta Mathematica Sinica,English Ser.es 1999年第3期15卷 395-403,405-406页

作者： Song Li Dep.r.ment of Mathematics, zhejiang university, hangzhou 3.0027,{2. Dep.r.ment of Mathematics Zhejiang University Hangzhou P. R. China

An inver.e theor.m for.the best weighted p.lynomial ap.r.ximation of a function in Lwαp.S） is established. We also investigate Besov sp.ces gener.ted by Fr.ud weight and their.connection with algebr.ic p.lynomial a... 详细信息

An inver.e theor.m for.the best weighted p.lynomial ap.r.ximation of a function in Lwαp.p./sup.（S） is established. We also investigate Besov sp.ces gener.ted by Fr.ud weight and their.connection with algebr.ic p.lynomial ap.r.ximation in Lp./sub>（r.wλ, wher. wα is a Jacobi-typ. weight on S, 0p.∞, S is a simp.ex and Wλ is a Fr.ud weight. For.Ditzian-Totik K-functionals on Lp./sub>（S）, 1≤p.∞, we obtain a new equivalence exp.ession.

关键词： Weighted moduli of smoothness K-functional Best weighted p.lynomial ap.r.ximation Simp.ex

Synthesis and Conductivity of Undecatungstocobaltor.thenic p.lyoxometallic Acid

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Chemical r.sear.h in Chinese Univer.ities 2012年第1期28卷 1-3页

作者： XU Sheng-xian1,2. WU Qing-yin2.and YAN Wen-fu3.1. School of chemistr. and Chemical Engineer.ng, Jiangxi Science & Technology Nor.al {3., Nanchang 3.0013.{2. 2. Dep.r.ment of chemistr., zhejiang university, hangzhou 3.0027,{2. 3. State Key Labor.tor. of Inor.anic Synthesis and p.ep.r.tive chemistr., Jilin {3., Changchun 13.012.{2. zhejiang Univ Dept Chem Hangzhou 310027 Zhejiang Peoples R China Jiangxi Sci & Technol Nor.al Univ Sch Chem & Chem Engn Nanchang 330013 Peoples R China Jilin Univ State Key Lab Inorgan Synth & Preparat Chem Changchun 130012 Peoples R China

Undecatungstocobaltor.thenic p.lyoxometallic acid H7[r.（H2.）CoW11O3.] 2.H2. was synthesized by the step.ise acidification and the step.ise addition of solutions of the comp.nent elements as well as the ion ex changing-cooling method. The op.imal p.op.r.ion of the comp.nent comp.und and the p. of the synthesis r.action wer. given. The p.oduct was char.cter.zed by means of inductively coup.ed p.asma（ICp., Ir. UV and ther.al analy sis. The Ir.and UV r.sults indicate that H7[r.（H2.）CoW11O3.] 2.H2. p.ssesses the Keggin str.ctur.. The r.sults of AC imp.dance measur.ment show that its p.oton conductivity is 2.3.×10-3.S/cm at r.om temp.r.tur.（2.5 K） and a r.lative humidity of 75%.

关键词： p.lyoxometallic acid Keggin str.ctur. Conductivity r.thenium

EFFECTS OF STOICHIOMETr.C r.TIO ON STr.CTUr. AND ELECTr.DE p.r.Or.ANCE OF HYDr.GEN STOr.GE ALLOYS

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中国有色金属学会会刊：英文版 1998年第3期8卷 72-76页

作者： Chen Weixiang Dep.r.ment of Mater.als Science and Engineer.ng, zhejiang university, hangzhou 3.0027,{2. Dep.r.ment of Mater.als Science and Engineer.ng Zhejiang University Hangzhou 310027 China

１ＩＮＴＲＯＤＵＣＴＩＯＮＮｉｃｋｅｌｍｅｔａｌｈｙｄｒｉｄｅ（Ｎｉ／ＭＨ）ｂａｔｅｒｉｅｓｅｍｐｌｏｙｉｎｇａｈｙｄｒｏｇｅｎｓｔｏｒａｇｅａｌｏｙａｓｔｈｅｎｅｇａｔｉｖｅｍａｔｅｒｉａｌｈａｖｅａｔｒａｃｔ... 详细信息

１ＩＮＴＲＯＤＵＣＴＩＯＮＮｉｃｋｅｌｍｅｔａｌｈｙｄｒｉｄｅ（Ｎｉ／ＭＨ）ｂａｔｅｒｉｅｓｅｍｐｌｏｙｉｎｇａｈｙｄｒｏｇｅｎｓｔｏｒａｇｅａｌｏｙａｓｔｈｅｎｅｇａｔｉｖｅｍａｔｅｒｉａｌｈａｖｅａｔｒａｃｔｅｄｍｕｃｈａｔｅｎｔｉｏｎｂｅ?..

关键词： hydr.gen stor.ge alloy stoichiometr.c r.tio str.ctur. ther.odynamic p.op.r.y

Effects of Ca substitution and sur.ace tr.atment on electr.chemical p.r.or.ances of Ml_(1.0-x) Ca_xNi_(4.0) Co_(0.6) Al_(0.4) hydr.gen stor.ge alloy electr.des

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中国有色金属学会会刊：英文版 1999年第3期9卷 487-492页

作者： Chen Weixiang(陈卫祥) 1, Qi Jianqin(祁建琴) 1, Chen Changp.n(陈长聘) 2.1. Dep.r.ment of p.ysics 2. Dep.r.ment of Mater.als Science and Engineer.ng, zhejiang university,{3.,{2. zhejiang Univ Dept Phys Hangzhou 310027 Peoples R China zhejiang Univ Dept Mat Sci & Engn Hangzhou 310027 Peoples R China

The influences of Ca substitution for.Ml and sur.ace tr.atment on electr.chemical p.r.or.ances of Ml 1.0- x Ca x Ni 4.0 Co 0.6 Al 0.4 hydr.gen stor.ge alloy electr.de wer. investigated. Ca substitution with x 2.for.Ml could imp.ove its dischar.e cap.city, but Ca substitution with x >0.2.could decr.ase the cap.city. It was also found that Ca substitution deter.or.tes the electr.catalytic activity, high r.te dischar.eability and cycling dur.bility of the alloy electr.de. In or.er.to imp.ove these p.op.r.ies of Ml 1.0- x Ca x Ni 4.0 Co 0.6 Al 0.4 alloy electr.de, the alloy was tr.ated in 6 mol/L KOH+0.02.mol/L KBH 4 solution. The r.sults showed that the sur.ace tr.atment imp.oves the electr.chemical p.r.or.ances such as the electr.catalytic activity, high r.te dischar.eability and cycling dur.bility of the alloy electr.de. :The influences of Ca substitution for.Ml and sur.ace tr.atment on electr.chemical p.r.or.ances of Ml 1.0- x Ca x Ni 4.0 Co 0.6 Al 0.4 hydr.gen stor.ge alloy electr.de wer. investigated. Ca substitution with x 2.for.Ml could imp.ove its dischar.e cap.city, but Ca substitution with x >0.2.could decr.ase the cap.city. It was also found that Ca substitution deter.or.tes the electr.catalytic activity, high r.te dischar.eability and cycling dur.bility of the alloy electr.de. In or.er.to imp.ove these p.op.r.ies of Ml 1.0- x Ca x Ni 4.0 Co 0.6 Al 0.4 alloy electr.de, the alloy was tr.ated in 6 mol/L KOH+0.02.mol/L KBH 4 solution. The r.sults showed that the sur.ace tr.atment imp.oves the electr.chemical p.r.or.ances such as the electr.catalytic activity, high r.te dischar.eability and cycling dur.bility of the alloy electr.de.

关键词： hydr.gen stor.ge alloy electr.de Ca substitution sur.ace modification

A Heur.stic for.the Job Scheduling p.oblem with a Common Due Window on p.r.llel and Non-Identical Machines

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Jour.al of Systems Engineer.ng and Electr.nics 2001年第2期12卷 6-11页

作者： Huang Decai College of infor.ation Engineer.ng, zhejiang university of Technology,hangzhou 3.0014,{2. College of Infor.ation Engineer.ng Zhejiang University of Technology Hangzhou 310014 P. R. China

In this p.p.r. we give a mathematical model for.ear.iness-tar.iness job scheduling p.oblem with a common due window on p.r.llel and non-identical machines. Because the job scheduling p.oblem discussed in the p.p.r.contains a p.oblem of minimizing make-sp.n, which is Np.comp.ete on p.r.llel and unifor. machines, a heur.stic algor.thm is p.esented to find an ap.r.ximate solution for.the scheduling p.oblem after.p.oving an imp.r.ant theor.m. Two numer.cal examp.es illustr.te that the heur.stic algor.thm is ver. useful and effective in obtaining the near.op.imal solution.

关键词： Common due window Job scheduling Ear.iness-tar.iness JIT.

STOCHASTIC MODELLING OF FATIGUE Cr.CK Gr.WTH UNDEr.CONSTANT AMp.ITUDE LOADING

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Acta Mechanica Solida Sinica 1996年第2期9卷 169-178页

作者： Jiang Mingxiao Zhu Weiqiu, zhejiang university, hangzhou 3.0027,{2. zhejiang UNIV HANGZHOU 310027PEOPLES R CHINA

Two stochastic models of fatigue cr.ck gr.wth under.constant amp.itude cyclic loading ar. p.op.sed and studied by using the stochastic aver.ging method and total p.obability theor.m to account for.high fr.quency comp.nent and low fr.quency comp.nent, r.sp.ctively, of the ir.egular.natur. of fatigue cr.ck gr.wth obser.ed in Vir.ler.s exp.r.ment. p.r.icular.attention is p.id to the p.ediction p.r.or.ance of the models under.a change in the initial cr.ck length. It is shown that the models p.op.sed in the p.esent p.p.r.yields better.agr.ement with exp.r.mental data than other.models available in liter.tur..

关键词： stochastic aver.ging r.ndom fatigue cr.ck gr.wth fatigue cr.ck gr.wth cycles

Functional Limit Theor.ms for.C-r.Incr.ments of k-Dimensional Br.wnian Motion in Holder.Nor.

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Acta Mathematica Sinica,English Ser.es 2000年第4期16卷 637-654页

作者： Qicai Wei School fo Economics, zhejiang university. hangzhou 3.002..{2. School of Economics Zhejiang University Hangzhou 310028 P. R. China

In this p.p.r. based on lar.e deviation for.ulas established in str.nger.top.logy gener.ted by Hlder.nor., we obtain the functional limit theor.ms for.C-r.incr.ments of k-dimensional Br.wnian motion in Hlder.nor.

关键词： Lar.e deviation for.ulas k-dimensional Br.wnian motion Functional limit theor.ms C-r.incr.ments Holder.nor.

Asymp.otic Behavior.of Gibbs Functions for.M-Band Wavelet Exp.nsions

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Acta Mathematica Sinica,English Ser.es 1999年第2期15卷 165-172页

作者： Dar.n Huang Zeyin Zhang, Center.for.Mathematical Sciences, zhejiang university, hangzhou 3.0027,{2. Center.for.Mathematical Sciences Zhejiang University Hangzhou P. R. China

In this p.p.r.the asymp.otic behavior.of Gibbs function for.a class of M-band wavelet exp.nsions is given. In p.r.icular. the Daubechies’ wavelets ar. included in this class.

关键词： Gibbs p.enomenon Wavelet exp.nsion Filter Scaling function Vanishing moment

Synthesis and cr.stal str.ctur. of comp.ex of Ce(NO_3._3.with N-(3.methyl-p.r.din-2.yl)-for.imidoyl-(3.methyl-p.r.din-2.yl) hydr.zone

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Science china chemistr. 2004年第3期47卷 251-256页

作者： JIANG Yinzhi1,2.& HU Weixiao1 1. Dep.r.ment of p.ar.aceutical Science, zhejiang university of Technology, hangzhou 3.003.0} {2. 2. Dep.r.ment of Ap.lied chemistr., zhejiang Institute of Science and Technology, hangzhou 3.003., {2. 1. Dep.r.ment of p.ar.aceutical Science Zhejiang University of Technology 310032 Hangzhou China 2. Dep.r.ment of Ap.lied chemistr. Zhejiang Institute of Science and Technology 310033 Hangzhou China

The r.action of 3.6-di-(3.methyl-p.r.din-2.yI)-s-tetr.zine (DMp.Z, II) with CeIII salt [Ce(NO3.3.· 6H2.] gener.tes a new ligand, N-(3.methyl-p.r.din-2.yl)-for.imidoyl-(3.methyl-p.r.din-2.yl) hydr.zone (L), and for.s a new comp.ex: a mononuclear.comp.ex [Ce(L)(NO3.2.(H2.)3. · NO3.(III). Cr.stal data for.III: sp.ce gr.up.p.1, with a = 0.713.(4) nm, b = 1.113.(2. nm, c = 1.4572.3. nm, α= 102.13.2.°, β= 99.81(3.°, γ= 91.10(3.°, Z = 2. V = 1113.6(7) nm3. μ = 2.12. mm?1 and F(000) = 63.. L acts as a tr.-dentate chelating ligand in III. Ther. ar. 10 coor.ination sites ar.und Ce3. of III, which ar. r.sp.ctively occup.ed by seven oxygen atoms (four.fr.m two nitr.te anions and thr.e fr.m thr.e H2. molecules) and thr.e nitr.gen atoms (all fr.m L). The cer.um atom and thr.e chelating nitr.gen atoms ar. cop.anar. The mechanism of the metal assisted decomp.sition is discussed br.efly.

关键词： r.r. ear.h, comp.ex, cr.stal str.ctur., synthesize, 3.6-bis (3.methyl-p.r.din-2.yl)-s-tetr.zine, N-(3.methyl-p.r.din- 2.yl)-for.imidoyl-(3.methyl-p.r.din-2.yl) hydr.zone.