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Appli.d Mathemati.s and Mechani.s(Engli.h Edi.i.n) 2009年第6期30卷 717-726页

作者： Y. Bedji.i.i.A. Tounsi.H. M. Berrabah i. Mechab E. A. Adda bedia S. Benai.sa Uni.ersi.é de Tlemcen Faculté des Sciences de l'ingénieurDépartement de Génie MécaniqueAlgérie Laboratoi.e des Matéri.ux et Hydrologi. Université de Sidi Bel AbbesAlgérie Laboratoi.e de Mathémati.ues Université de Sidi Bel AbbesAlgérie

The present study i. concerned wi.h the vi.rati.n analysi. of symmetri. composi.e beams wi.h a vari.ble fi.er volume fracti.n through thi.kness. Fi.st-order shear deformati.n and rotary i.erti. have been i.cluded i. the analysi.. The soluti.n procedure i. appli.able to arbi.rary boundary condi.i.ns. Conti.uous gradati.n of the fi.er volume fracti.n i. modeled i. the form of an m-th power polynomi.l of the coordi.ate axi. i. the thi.kness di.ecti.n of the beam. By varyi.g the fi.er volume fracti.n wi.hi. the symmetri. composi.e beam to create a functi.nally graded materi.l （FGM）, certai. vi.rati.n characteri.ti.s are affected. Results are presented to demonstrate the effects of shear deformati.n, fi.er volume fracti.n, and boundary condi.i.ns on the natural frequenci.s and mode shapes of composi.e beams.

关键词： free vi.rati.n functi.nally graded materi.ls fi.st-order shear deformati.ntheory

Uni.i.d treatment of one-range addi.i.n theorems for i.teger and non-i.teger n-STO, -GTO and -generali.ed exponenti.l type orbi.als wi.h hyperboli. cosi.e i. posi.i.n, momentum and four-di.ensi.nal spaces

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Chi.ese Physi.s B 2012年第9期21卷 176-178页

作者： i. i. Gusei.ov Department of Physi.s Faculty of Arts and Sciences Onsekiz Mart University

Si.pler formulas are deri.ed for one-range addi.i.n theorems for the i.teger and noni.teger n generali.ed ex- ponenti.l type orbi.als, momentum space orbi.als, and hyperspheri.al harmoni.s wi.h hyperboli. cosi.e （GETO HC, GMSO HC, and GHSH HC） i. posi.i.n, momentum and four-di.ensi.nal spaces, respecti.ely. The fi.al results are expressed i. terms of one-range addi.i.n theorems of complete orthonormal sets of Ca-exponenti.l type orbi.als, Ca- momentum space orbi.als and za-hyperspheri.al harmoni.s. We noti.e that the one-range addi.i.n theorems for i.teger and noni.teger n-Slater type orbi.als and Gaussi.n type orbi.als i. posi.i.n, momentum and four di.ensi.nal spaces are speci.l cases of GETO HC, GMSO HC, and GHSH HC. The theorems presented can be useful i. the accurate study of the electroni. structure of atomi. and molecular systems.

关键词： electroni. structure generali.ed exponenti.l type orbi.als one-range addi.i.n theorems,Hartree-Fock-Roothaan equati.ns

One-Range Addi.i.n Theorems i. Terms of ψ^α -ETOs for STOs and Coulomb-Yukawa Li.e Correlated i.teracti.n Potenti.ls of i.teger and Noni.teger i.di.es

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Chi.ese Physi.s Letters 2008年第12期25卷 4240-4243页

作者： i. i. Gusei.ov Department of Physi.s Faculty of Arts and Sciences Onsekiz Mart University Canakkale Turkey

The expansi.n formulas i. terms of complete orthonormal sets of ψ^α -exponenti.l type orbi.als are establi.hed for the Slater type orbi.als and Coulomb-Yukawa-li.e correlated i.teracti.n potenti.ls of i.teger and noni.teger i.di.es. These relati.ns are used i. obtai.i.g thei. unsymmetri.al and symmetri.al one-range addi.i.n theorems. The fi.al results are especi.lly useful i. the calculati.ns of multi.entre multi.lectron i.tegrals occurri.g when Hartree-Fock-Roothaan and expli.i.ly correlated methods are employed.

关键词： orthonormal set expansi.n formula

Free vi.rati.n of functi.nally graded sandwi.h plates usi.g four-vari.ble refi.ed plate theory

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Appli.d Mathemati.s and Mechani.s(Engli.h Edi.i.n) 2011年第7期32卷 925-942页

作者： L.HADJi.H.A.ATMANE A.TOUNSi.i.MECHAB E.A.ADDA bedia Laboratoi.e des Matéri.ux et Hydrologi. Université de Sidi Bel AbbesSidi Bel Abbes 22000Algérie Département de Géni. Ci.i. Université Ibn KhaldounTiaret 14000Algérie Département de Géni. Ci.i. Faculté des Sciences de l'IngénieurUnivesité Hassiba Benbouali de ChlefChlef 02000Algérie

Thi. paper uses the four-vari.ble refi.ed plate theory （RPT） for the free vi.rati.n analysi. of functi.nally graded materi.l （FGM） sandwi.h rectangular plates. Unli.e other theori.s, there are only four unknown functi.ns i.volved, as compared to fi.e i. other shear deformati.n theori.s. The theory presented i. vari.ti.nally consi.tent and strongly si.i.ar to the classi.al plate theory i. many aspects. i. does not requi.e the shear correcti.n factor, and gi.es ri.e to the transverse shear stress vari.ti.n so that the transverse shear stresses vary paraboli.ally across the thi.kness to sati.fy free surface condi.i.ns for the shear stress. Two common types of FGM sandwi.h plates are consi.ered, namely, the sandwi.h wi.h the FGM facesheet and the homogeneous core and the sandwi.h wi.h the homogeneous facesheet and the FGM core. The equati.n of moti.n for the FGM sandwi.h plates i. obtai.ed based on Hami.ton＇s pri.ci.le. The closed form soluti.ns are obtai.ed by usi.g the Navi.r techni.ue. The fundamental frequenci.s are found by solvi.g the ei.envalue problems. The vali.i.y of the theory i. shown by compari.g the present results wi.h those of the classi.al, the fi.st-order, and the other hi.her-order theori.s. The proposed theory i. accurate and si.ple i. solvi.g the free vi.rati.n behavi.r of the FGM sandwi.h plates.

关键词： functi.nally graded materi.l (FGM) free vi.rati.n sandwi.h plate refi.edplate theory (RPT) Navi.r soluti.n

Test measurements for accuracy of absolute and relati.e GPS posi.i.ni.g

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中国有色金属学会会刊：英文版 2005年第S1期15卷 299-303页

作者： i. Havasi Uni.ersi.y of Mi.kolc Hungary

The paper, after the i.troducti.n, bri.fly outli.es the pri.ci.les of both absolute and relati.e GPS posi.i.ni.g. i. deals wi.h factors and error resources affecti.g the accuracy of these surveyi.g procedures. i. revi.ws the geodeti. determi.ati.n of a reference poi.t and a base li.e used for the test measurements. The study descri.es the completed test measurements, and on the basi. of results, i. draws the conclusi.ns for the accuracy of the i.vesti.ated surveyi.g methods. Fi.ally, consi.eri.g these accuracy measures, thei. possi.le appli.ati.n i. mi.e surveyi.g i. also menti.ned very shortly.

关键词： GPS surveyi.g methods factors and errors test measurements accuracy

Hardness of Mn_2V_2O_7 thi. fi.ms and i.s i.fluenti.l factors

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i.ternati.nal Journal of Mi.erals,Metallurgy and Materi.ls 2015年第9期22卷 987-991页

作者： i. Aft i. Kari.er Department of Sci.nce Educati.n Faculty of Education Erciyes University Kayseri 38039 Turkey

Mn2V2O7 thi. fi.ms were deposi.ed onto amorphous glass substrates usi.g a chemi.al bath deposi.i.n method and di.ferent deposi.i.n ti.e. X-ray di.fracti.n （XRD） analysi. was used to defi.e the structure of the fi.ms. Thei. roughness, thi.kness, and surface properti.s were evaluated through atomi. force mi.roscopy （AFM）. The hardness of the fi.ms was measured usi.g a nanohardness tester The fi.m thi.kness, average grai. si.e, and roughness were posi.i.ely correlated wi.h each other. These three parameters were observed to i.crease wi.h the deposi.i.n ti.e. The fi.m thi.kness and average grai. si.e were i.versely correlated wi.h the hardness and rough- ness. i. addi.i.n, the number of crystalli.es per uni. area and the di.locati.n densi.y were observed to be posi.i.ely correlated wi.h the hardness and roughness. Thi. study was desi.ned to eluci.ate and formali.e the underlyi.g reasons for these relati.nshi.s.

关键词： manganese vanadate thi. fi.ms nanohardness i.fluenci.g factors

Vi.cous Dark Energy Models wi.h Vari.ble G and A

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Chi.ese Physi.s Letters 2008年第10期25卷 3834-3836页

作者： Arbab i. Arbab Department of Physi.s Faculty of Science University of Khartoum PO Box 321 Khartoum 11115 SudanDepartment of Physics and Applied Mathematics Faculty of Applied Sciences and Computer Omdurman Ahlia University PO Box 7S6 Omdurman Sudan

We consi.er a cosmologi.al model wi.h bulk vi.cosi.y η and vari.ble cosmologi.al A ∝p^-α, alpha = const and gravi.ati.nal G constants. The model exhi.i.s many i.teresti.g cosmologi.al features. i.flati.n proceeds du to the presence of bulk vi.cosi.y and dark energy wi.hout requi.i.g the equati.n of state p =-p. Duri.g the i.flati.nary era the energy densi.y p does not remai. constant, as i. the de-Si.ter type. Moreover, the cosmologi.al and gravi.ati.nal constants i.crease exponenti.lly wi.h ti.e, whereas the energy densi.y and vi.cosi.y decrease exponenti.lly wi.h ti.e. The rate of mass creati.n duri.g i.flati.n i. found to be very huge suggesti.g that all matter i. the uni.erse i. created duri.g i.flati.n.

关键词： the power-law exponents preci.i.ati.n durati.e abrupt preci.i.ati.n change

Phantom Energy wi.h Vari.ble G and A

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Chi.ese Physi.s Letters 2008年第12期25卷 4497-4500页

作者： Arbab i. Arbab Department of Physi.s Faculty of Science University of Khartoum P.O. Box 321 Khartoum 11115 Sudan 2.Department of Physi.s and Appli.d Mathemati.s Faculty of Applied Sciences and Computer Omdurman Ahlia University P.O. Box 786 Omdurman Sudan

We i.vesti.ate a cosmologi.al model of a phantom energy wi.h a vari.ble cosmologi.al constant （∧） dependi.g on the energy densi.y （ρ） as ∧∝ρ^α,α=const and a vari.ble gravi.ati.nal constant G. The model requi.es α 〈 0 and a negati.e gravi.ati.nal constant. The cosmologi.al constant evolves wi.h ti.e as ∧ ∝ t^-2. For ω 〉 - 1 and α 〈 -1 the cosmologi.al constant ∧ 〈 0, G 〉 0 and ρ decrease wi.h cosmi. expansi.n. For ordi.ary energy （or dark energy）, i.e.ω 〉 -1, we have -1 〈 α〈 0 and β 〉 0 so that G〉0 i.creases wi.h ti.e and p decreases wi.h ti.e. Cosmi. accelerati.n wi.h dust parti.les i. granted, provi.ed -2/3 〈α〈 0 and ∧〉0.

关键词： fi.ld emi.si.n molybdenum di.xi.e enhancement factor

The hi.tory of Cochlear^(TM) Nucleus~ sound processor upgrades:30 years and counti.g

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Journal of Otology 2015年第3期10卷 108-114页

作者： Anne L.beiter Esti.Nel Cochlear Li.i.ed I University AvenueMacquarie University

Objecti.e:To revi.w developments i. sound processors over the past 30 years that have resulted i. si.ni.i.ant i.provements i. outcomes for Nucleus~ reci.i.nts.

关键词： Cochlear i.plant Sound processor SmartSound SCAN Wi.eless accessori.s

Photoproducti.n of mesons off the deuteron:quasi.ree and coherent processes

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Chi.ese Physi.s C 2009年第12期33卷 1340-1344页

作者： i. Jaeglé Departmement of Physi.s University of Basel CH-4056 Basel Switzerland

Photoproducti.n of mesons off the deuteron has been i.vesti.ated at a tagged photon beam of the Bonn ELSA accelerator wi.h the combi.ed Crystal Barrel - TAPS electromagneti. calori.eter for i.ci.ent photon energi.s up to 2.5 GeV. The mesons have been detected i. coi.ci.ence wi.h recoi. protons, neutrons and deuterons. Thi. allow the measurement of meson producti.n reacti.ns off the quasi.ree nucleons bound i. the deutron, as well as the coherent producti.n off the deuteron. The compari.on of quasi.ree proton reacti.ns to free proton reacti.ns can confi.m or i.vali.ate possi.le nuclear effects on the extracted cross secti.n reacti.ns. Furthermore the i.ospi. composi.i.n of a resonance can be esti.ated from the compari.on of quasi.ree proton and neutron reacti.ns. The quasi.ree photoproducti.n of the η＇ and π°η mesons off nucleons and the coherent photoproducti.n of π°η--pai.s off the deuteron are di.cussed.

关键词： quasi.ree coherent photoproducti.n η' π°η neutron proton deuteron