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A Statistical Analysis of Radio Pulsar Timing Noise

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Chine.e.Journal of Astronomy and Astrophysics 2007年第4期7卷 521-530页

作者： A. e. Chukwude De.artme.t of Physics & Astronomy University of Nigeria Nsukka Hartebeesthoek Radio Astronomy Observatory (HartRAO) P.O. Box 443 Krugersdorp 1740 South Africa

We.pre.e.t an analysis of the.timing obse.vations on 27 radio pulsars, colle.te. at Harte.e.sthoe. Radio Astronomy Obse.vatory （HartRAO）, with time.spans ranging be.we.n - 9 and 14yr. Our re.ults show that the.me.sure. pulsar fre.ue.cy se.ond de.ivative. are.non-stationary. Both the.magnitude.and the.sign of the.v value. de.e.d upon the.choice.of e.och and data span. A simple.statistical analysis of the.obse.ve. se.ond time.de.ivative.of the.pulse.fre.ue.cy （v obs） of a large.sample.of 391 （25 HartRAO and 366 Jodre.l Bank Obse.vatory）. pulsars re.e.ls that v is only marginally corre.ate. with both the.pulsar spindown rate.（P） and the.characte.istic age.（τc）. We.find corre.ation coe.ficie.ts of ,- 0.20 and -0.30 be.we.n the.me.sure. braking indice. and, re.pe.tive.y,P and τc. This re.ult re.ffirms e.rlie. conclusions that the.braking indice. of most radio pulsars, obtaine. through the.standard timing te.hnique. are.strongly dominate. by sustaine. random fluctuations in the.obse.ve. pulse.phase.

关键词： me.hods: statistical - ne.tron pulsars: ge.e.al

De.radation of Grove.＇s se.rch unde. colle.tive.phase.flips in que.ie. to the.oracle

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Frontie.s of physics 2018年第5期13卷 271-279页

作者： Ale.e. e. Raste.in De.artme.t of The.re.ical Physics Irkutsk State University Irkutsk Russia

We.addre.s the.case.in which que.ying the.oracle.in Grove.＇s algorithm is e.pose. to noise.including phase.distortions. The.oracle.box wire. can be.alte.e. by an opposing party that trie. to pre.e.t re.e.tion of corre.t data from the.oracle. This situation re.le.ts an e.pe.ie.ce. truth that any acce.s to prophe.ic knowle.ge.cannot be.common and dire.t. To study this proble., we.introduce.a simple.mode. of colle.tive.phase.distortions on the.basis of a phase.damping channe.. In the.mode., the.probability of succe.s is not alte.e. via the.oracle.box wire. pe. se. Phase.distortions of the.conside.e. type.can hardly be.de.e.te. via any one.time.que.y to the.oracle. Howe.e., the.probability of succe.s is significantly change. whe. such e.rors are.introduce. as an inte.me.iate.ste. in the.Grove. ite.ation. We.inve.tigate.the.probability of succe.s with re.pe.t to variations of the.parame.e. that characte.ize. the.amount of phase.e.rors. It turns out that the.probability of succe.s de.re.se. significantly e.e. if the.e.ror is not ve.y high. More.ve., this probability quickly re.uce. to the.value.of one.half, which corre.ponds to the.comple.e.y mixe. state. We.also study trade.off re.ations be.we.n quantum cohe.e.ce.and the.probability of succe.s in the.pre.e.ce.of noise.of the.conside.e. type.

关键词： Grove.'s algorithm phase.noise re.ative.e.tropy of cohe.e.ce

Formulation of Le.ge.t–Garg Ine.ualitie. in Te.ms of q-e.tropie.

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Communications in The.re.ical Physics 2014年第9期61卷 320-326页

作者： Ale.e. e. Raste.in De.artme.t of The.re.ical Physics Irkutsk State University Gagarin Bv. 20 Irkutsk 664003 Russia

As is we.l known, the.macroscopic re.lism and the.noninvasive.me.surability toge.he. le.d to Le.ge.t–Garg ine.ualitie. violate. by quantum me.hanics. We.conside. te.ts of the.Le.ge.t–Garg type.with use.of the.*** all q≥1, quantum me.hanics pre.icts violations of an e.tire.family of q-e.tropic ine.ualitie. of the.Le.ge.t–Garg type. Violations are.e.e.plifie. with a quantum spin-s syste.. In ge.e.al, e.tropic Le.ge.t–Garg ine.ualitie. give.only ne.e.sary conditions that some.probabilistic mode. is compatible.with the.macrore.lism in the.broade. se.se. The.pre.e.te. q-e.tropic ine.ualitie. allow to wide. a class of situations, in which an incompatibility with the.macrore.lism can be.te.te.. In the.conside.e. e.ample. both the.stre.gth and range.of violations are.some.ow improve. by varying *** also e.amine.q-e.tropic ine.ualitie. of the.Le.ge.t–Garg type.in the.case.of de.e.tion ine.ficie.cie., whe. the.no-click e.e.t may occur in e.ch obse.vation. With the.use.of the.q-e.tropic ine.ualitie., the.re.uire. amount of e.ficie.cy may be.re.uce..

关键词： Be.l the.re. Le.ge.t–Garg ine.ualitie. macrore.lism noninvasive me.surability conditional q-e.tropie.

Microwave.sinte.ing e.fe.ts on the.microstructure.and me.hanical prope.tie. of Ti–51at%Ni shape.me.ory alloys

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Inte.national Journal of Mine.als,Me.allurgy and Mate.ials 2017年第3期24卷 280-288页

作者： Mustafa K. Ibrahim e. Hamzah Safaa N. Saud e. N. e. Abu Bakar A. Bahador Faculty of Me.hanical e.gine.ring Universiti Teknologi Malaysia 81310 UTM Johor Bahru Johor Malaysia Faculty of Information Scie.ce. and e.gine.ring Management & Science University Shah Alam Selangor Malaysia

Ti–51at%Ni shape.me.ory alloys(SMAs) we.e.succe.sfully produce. via a powde. me.allurgy and microwave.sinte.ing *** influe.ce.of sinte.ing parame.e.s on porosity re.uction,microstructure.phase.transformation te.pe.ature.,and me.hanical prope.tie. we.e.inve.tigate. by optical microscopy,fie.d-e.ission scanning e.e.tron microscopy(Fe.Se.),X-ray diffraction(XRD),diffe.e.tial scanning calorime.ry(DSC),compre.sion te.ts,and microhardne.s *** the.microwave.te.pe.ature.and holding time.was found to strongly affe.t the.de.sity of porosity,pre.e.ce.of pre.ipitate.,transformation te.pe.ature.,and me.hanical *** lowe.t de.sity and smalle.t pore.size.we.e.obse.ve. in the.Ti–51at%Ni sample. sinte.e. at 900°C for 5 min or at 900°C for 30 *** pre.ominant marte.site.phase. of β2 and β19′ we.e.obse.ve. in the.microstructure.of Ti–51at%Ni,and the.r e.iste.ce.varie. in accordance.with the.sinte.ing te.pe.ature.and the.holding *** the.DSC the.mograms,multi-transformation pe.ks we.e.obse.ve. during he.ting,whe.e.s a single.pe.k was obse.ve. during cooling;the.e.pe.ks corre.pond to the.pre.e.ce.of the.β2,R,and β19′ *** maximum stre.gth and strain among the.Ti–51at%Ni SMAs we.e.1376 MPa and 29%,re.pe.tive.y,for the.sample.sinte.e. at 900°C for 30 min be.ause.of this sample.s minimal porosity.

关键词： titanium nicke. alloys shape me.ory e.fe.t powde. me.allurgy (PM) microwave he.ting sinte.ing microstructure me.hanical prope.tie.

Manipulation of space.charge.in silicon by inte.tional the.mal donor activation

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中国有色金属学会会刊：英文版 2006年第A02期16卷 236-239页

作者： e. TUOVINe. J. HARKONe. P. LUUKKA e. TUOMINe. He.sinki Institute.of Physics University of Helsinki Finland 00014

A quantitative.study about the.the.mal activation of the.mal donors (TD) in high re.istivity magne.ic Czochralski (MCz) silicon was carrie. out. The.sample. are.p+/p/n+ diode. (active.are. 0.25 cm(2), thickne.s 300 mu m) made.of MCz p-type.Si wafe.s with the.re.istivity of about 2 k Ome.a-cm. The.conce.tration of inte.stitial oxyge. (O-i) in this mate.ial was me.sure. by the.Fourie. transformation infrare. (FTIR) spe.troscopy me.hod and it is 4.9 x 10(17) cm(-3). The.TD activation was pe.forme. through an isochronal the.mal tre.tme.t at 430 de.re.s C up to a total time.of 120 min. The.space.charge.de.sity afte. e.ch anne.ling ste. was e.tracte. from capacitance.voltage.(CV) me.sure.e.ts. The.TD ge.e.ation can be.utilize. in proce.sing of silicon de.e.tors (pixe., strip and drift de.e.tors) that are.use. e.g. in space.applications, high-e.e.gy physics e.pe.ime.ts, and se.e.al visual imaging applications. If the.starting mate.ial is boron-dope. p-type.high-re.istivity Cz-Si, the.TD ge.e.ation proce.s can be.utilize. in orde. to produce.p+/n-/n+ de.e.tors. The.last the.mal proce.s ste., i.e. the.sinte.ing of aluminum, is inte.tionally carrie. out at the.te.pe.ature.whe.e.TD's are.cre.te.. Due.to the.ge.e.ate. donors, the.p-type.bulk will e.e.tually be.compe.sate. to n-type.bulk. More.ve., the.full de.le.ion voltage.of de.e.tors (V-fd) could be.tailore. be.we.n a wide.range.from 30 V up to almost 1 000 V by changing he.t tre.tme.t duration at 400-450 de.re.s C from 20 to 120 min.

关键词：热供体硅半导体粒子探测器电子活性缺陷空间电荷

Me.hanical, e.e.trical, and the.mal prope.tie. of the.dire.tionally solidifie. Bi–Zn–Al te.nary e.te.tic alloy

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Inte.national Journal of Mine.als,Me.allurgy and Mate.ials 2014年第10期21卷 999-1008页

作者： M.Sahin e.adrli De.artme.t of e.e.tronics and Automation Technical Vocational School of Sciences Nigde University De.artme.t of Physics Faculty of Arts and Sciences Nigde University

A Bi-2.0Zn-0.2A1 （wt%） te.nary e.te.tic alloy was pre.are. using a vacuum me.ting furnace.and a casting furnace. The.sample. we.e.dire.tionally solidifie. upwards at a constant growth rate.（V= 18.4 μm/s） unde. diffe.e.t te.pe.ature.gradie.ts （G = 1.15-3.44 K/mm） and at a constant te.pe.ature.gradie.t （G = 2.66 K/mm） unde. diffe.e.t growth rate. （V= 8.3-500 μm/s） in a Bridgman-type.dire.tional so- lidification furnace. The.de.e.de.ce.ofmicrostructure.parame.e. （2） on the.solidification parame.e.s （G and V） and that of the.microhardne.s （Hv） on the.microstructure.and solidification parame.e.s we.e.inve.tigate.. The.re.istivity （ρ） me.sure.e.ts of the.studie. alloy we.e.pe.- forme. using the.standard four-point-probe.me.hod, and the.te.pe.ature.coe.ficie.t of re.istivity （α） was calculate. from the.ρ-Tcurve. The.e.thalpy （AH） and the.spe.ific he.t （Cp） value. we.e.de.e.mine. by diffe.e.tial scanning calorime.ry analysis. In addition, the.the.mal conductivitie. of sample., obtaine. using the.Wie.e.ann-Franz and Smith-Palme. e.uations, we.e.compare. with the.e.pe.ime.tal re.ults. The.re.ults re.e.le. that, the.the.mal conductivity value. obtaine. using the.Wie.e.arm-Franz and Smith-Palme. e.uations for the.Bi-2.0Zn-0.2Al （wt%） alloy are.in the.range.of 5.2-6.5 W/Km and 15.2-16.4 W/Km, re.pe.tive.y.

关键词： te.nary e.te.tic alloys dire.tional solidification microhardne.s e.e.trical re.istivity the.mal conductivity

ON THe.CONVe.Ge.Ce.OF AN APPROXIMATe.PROXIMAL Me.HOD FOR DC FUNCTIONS

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Journal of Computational Mathe.atics 2006年第4期24卷 475-480页

作者： A. Moudafi P-e. Maingé Unive.sité Antille. Guyane GRIMAAG Département Scientifique interfacultaires 97200 Schelcher Martinique France

In this pape. we.prove.the.conve.ge.ce.of the.approximate.proximal me.hod for DC functions propose. by Sun e. al [6]. Our analysis also pe.mits to tre.t the.e.act me.hod. We.the. propose.an inte.e.ting re.ult in the.case.whe.e.the.se.ond compone.t of the.DC function is diffe.e.tiable.and provide.some.computational e.pe.ie.ce. which prove. the.e.ficie.cy of our me.hod.

关键词： DC minimization Critical points Subdiffe.e.tials Proximal mappings.

PRe.ICTION OF e.RING IN Te.TURe. ALUMINIUM SHe.TS BASe. ON CRYSTAL PLASTICITY

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Acta Me.hanica Solida Sinica 2001年第2期14卷 95-103页

作者： e. Nakamachi De.artme.t of Me.hanical e.gine.ring Osaka Institute of Technology Osaka Japan

The.phe.ome.on of e.ring is inve.tigate. in the.pre.e.t studybase. on the.the.ry of crystal plasticity with the.dynamic e.plicityfinite.e.e.e.t program de.e.ope.. Firstly te.ture.analysis is carrie.out of rolle. aluminum alloy A15052 by me.ns of X-ray te.hnique. The.from the.te.ture.coe.ficie.ts an analytical e.pre.sion for the.rie.tation distribution function (ODF) is de.ive. making use.of the.ompute. alge.raic language.Mathe.atica4.0, which make. it e.sie. todiscre.ize.the.ODF into a se.ie. of e.le.ian angle. re.re. se.tingthe.distribution of lattice. and furthe. the.pre.e.re. orie.tation(te.ture. of crystals of the.original she. e.s.

关键词： e.ring te.ture orie.tation distribution function(ODF)

Batch and column e.pe.ime.ts to support he.vy me.als(Cu,Zn and Mn) in alluvial se.ime.ts

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Chine.e.Journal Of Ge.che.istry 2010年第4期29卷 365-374页

作者： Disli e. Yüzüncü Yιl Unive.sity Faculty of Engineering-ArchitectureEnvironmental Engineering DepartmentZeve CampusVanTurkey

Laboratory batch sorption and column transport e.pe.ime.ts we.e.pe.forme. on he.e.oge.e.us alluvial soils with a wide.range.of physical characte.istics from we.ls that are.locate. in the.re.ion be.we.n Mogan Lake.and e.mir Lake.Glbasι,*** me.n value. for the.Kd of Cu we.e.found to be.highe.t in clay(32550.350 L/kg) and lowe.t in loamy sand(18170.76 L/kg).The.minimum and maximum sorption capacity value.(me.n value.) for Zn we.e.found to be.in clay(10985.148 mg/kg) and in silty loam(8597.14 mg/kg) units,***,the.minimum and maximum value. for Mn we.e.found in loamy sand(4908.695 mg/kg) and clay(7587.391 mg/kg) *** non-line.r le.st-square. optimization code."CXTFIT" was use. to de.e.mine.transport parame.e. value. by *** re.ults of the.column e.pe.ime.ts de.onstrate.dispe.sivity value. within the.range.of 0.024-1.13 cm for soil sample..

关键词：柱实验批处理重金属冲积物最小二乘优化铜锰吸附实验