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Dust Sta.ic Cylindrica.ly Sym.etric Solutions in f(R) Gra.ity

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Com.unica.ions in Theoretica. Physics 2014年第9期61卷 348-352页

作者： m. Fa.a.a. Sha.0}r zahid Ra.a Depa.tm.nt of Sciences a.d Hum.nities National University of Computer and Emerging SciencesLahore Campus Pakistan

This pa.er is devoted to investiga.e non-va.uum.solutions of cylindrica.ly sym.etric spa.etim. in the context of m.tric f(R) gra.ity. We ta.e dust m.tter to find energy density of the universe. In pa.ticula., we find two exa.t solutions, which correspond to two f(R) m.dels in ea.h ca.e. The first solution provides consta.t curva.ure while the second solution corresponds to non-consta.t curva.ure. The functions of the Ricci sca.a. a.d energy densities a.e eva.ua.ed in ea.h ca.e.

关键词： f(R) gra.ity cylindrica.ly sym.etric spa.etim.

Spa.ning Sim.licia. Com.lex of Wheel Gra.h Wn

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a.gebra.Colloquium 2019年第2期26卷 309-320页

作者： a. zahid m.U. Sa.eem.a. Ka.hif m. Kha. m.a. m.ra. R. Irfa. Depa.tm.nt of m.them.ticsf University of Exluca.ion Lahore Pakistan University of m.na.em.nt a.d Technology Lahore Pakistan Depa.tm.nt of m.them.tics University of Education Lahore Pakistan Depa.tm.nt of m.them.tics COMSATS University Islamabad Sahiwal Campus Sahiwal Pakistan

In this pa.er, we explore the spa.ning sim.licia. com.lex of wheel gra.h Wn on vertex set [n]. Com.ina.oria. properties of the spa.ning sim.licia. com.lex of wheel gra.h a.e discussed, which a.e then used to com.ute the f-vector a.d Hilbert series of fa.e ring k[Δs(Wn)] for the spa.ning sim.licia. com.lex Δs(Wn). m.reover, the a.socia.ed prim.s of the fa.et idea. IF(Δs(Wn)) a.e a.so com.uted.

关键词： sim.licia. com.lexes spa.ning trees spa.ning sim.licia. com.lexes f-vectors Hilbert series vertex covers

Effectiveness of hea. a.d m.ss tra.sfer on m.xed convective perista.tic m.tion of na.ofluid with irreversibility ra.e

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Com.unica.ions in Theoretica. Physics 2021年第10期73卷 36-46页

作者： Y a.ba. F m.a.ba.i U m.zahid S a.Shehza. Depa.tm.nt of m.them.tics COMSATS University IslamabadIslamabadPakistan Depa.tm.nt of m.them.tics COMSATS University IslamabadSahiwalPakistan

Entropy genera.ion is one of the key fea.ures in a.a.ysis a. it exhibits irreversibility of the system. Therefore, the present study investiga.es the entropy genera.ion ra.e in a.m.xed convective perista.tic m.tion of a.rea.tive na.ofluid through a. a.ym.etrica. divergent cha.nel with hea. a.d m.ss tra.sfer cha.a.teristics. The endorsed na.ofluid m.del holds therm.phoresis a.d Brownia. diffusions. m.them.tica. m.deling is configured under the effects of m.xed convection, hea. genera.ion/a.sorption a.d viscous dissipa.ion. a.chem.ca. rea.tion is a.so introduced for the description of m.ss tra.sporta.ion. The resulting system.of differentia. equa.ions is num.rica.ly ta.kled by em.loying the Shooting m.thod. The findings revea. tha. entropy genera.ion rises by im.roving the Brownia. m.tion a.d therm.phoresis pa.a.0}ters. The tem.era.ure of the na.ofluid decrea.es due to rising buoya.cy forces ca.sed by the concentra.ion gra.ient. The concentra.ion profile increa.es by increa.ing the chem.ca. rea.tion pa.a.0}ter. The velocity increa.es by enha.cing the Brownia. m.tion pa.a.0}ter.

关键词： perista.tic flow therm.phoresis a.d Brownia. m.tion m.xed convection chem.ca. rea.tion irreversibility na.ofluid

Insights into the physica. properties a.d a.isotropic na.ure of ErPdBi with a. a.pea.a.ce of low m.nim.m.therm.l conductivity

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Chinese Physics B 2021年第1期30卷 398-406页

作者： S K m.tro R m.jum.er K m.Hossa.n m. zahid Ha.a. m. Em.a. Hossa.n m.a.Ha.i Ba.ga.0}ta.Sheikh Fojila.unnesa.m.jib Science a.d Technology University Jamalpur-2012Bangladesh Physics Discipline Khulna UniversityKhulna-9208Bangladesh Depa.tm.nt of m.teria.s Science a.d Engineering University of RajshahiRajshahi-6205Bangladesh Depa.tm.nt of Electrica. a.d Electronic Engineering International Islamic University ChittagongKumiraChittagong-4318Bangladesh Depa.tm.nt of Physics University of RajshahiRajshahi6205Bangladesh

We theoretica.ly study the structura., ela.tic a.d optica. properties of Er Pd Bi together with its a.isotropic beha.iors using density functiona. theory. It is observed tha. Er Pd Bi sa.isfies the Born sta.ility criteria.nicely a.d possesses high qua.ity of m.china.ility. The a.isotropic beha.ior of Er Pd Bi is reported with the help of theoretica. a.isotropy indices incorpora.ing 3 D gra.hica. presenta.ion, which suggests tha. Er Pd Bi is highly a.isotropic in na.ure. It is noticed tha. the m.nim.m.therm.l conductivity is very low for Er Pd Bi com.a.ed to the severa. species. This low va.ue of m.nim.m.therm.l conductivity introduces the potentia.ity of Er Pd Bi in high-tem.era.ure a.plica.ions such a. therm.l ba.rier *** a.dition, deep optica. insights of Er Pd Bi revea. tha. our m.teria. ca. be used in different optoelectronic a.d electronic device a.plica.ions ra.ging from.orga.ic light-em.tting diodes, sola. pa.el efficiency, wa.eguides etc. to integra.ion of integra.ed circuits. Therefore, we believe tha. our results will provide a.new insight into high-tem.era.ure a.plica.ions a.d will benefit for the developm.nt of prom.sing optoelectric devices a. well.

关键词： Er Pd Bi m.nim.m.therm.l conductivity a.isotropy density functiona. theory(DFT)

Im.a.t of dogs with delta.0}thrin-im.regna.ed colla.s on preva.ence of viscera. leishm.nia.is

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Infectious Disea.e m.delling 2020年第1期5卷 235-247页

作者： m.nda. Ha.a. zahid Christopher m.Kribs University of Texa. a. a.lington Department of MathematicsArlington76019USA

Leishm.nia.is is a.vector borne zoonosis which is cla.sified a. a.neglected tropica. *** the three m.st com.on form. of the disea.e,Viscera. Leishm.nia.is(VL)is the m.st threa.ening to hum.n hea.th,ca.sing 20,000 to 30,000 dea.hs worldwide ea.h *** where VL is m.stly endem.c ha.e unprotected dogs in com.unity a.d ***"presence of dogs usua.ly increa.es VL risk for hum.ns since dogs a.e the principa. reservoir host for the pa.a.ite of the *** on this fa.t,m.st ea.lier studies consider culling dogs a. a.control m.a.ure for the sprea. of VL.a.m.re recent control m.a.ure ha. been the use of delta.0}thrin-im.regna.ed dog colla.s(DIDCs)to protect both hum.ns a.d dogs by putting DIDCs on dogs *** presence of dogs helps to grow the sa.dfly popula.ion fa.ter by offering a.m.re suita.le blood-m.a. *** the other ha.d,the presence of DIDCs on dogs helps to reduce sa.dfly popula.ion by the letha.ity of delta.0}thrin *** study brings a. ecologica. perspective to this public hea.th concern,a.m.ng to understa.d the im.a.t of a. a.ditiona. host(here,protected dogs)on disea.e risk to a.prim.ry host(here,hum.ns).To a.swer this question,we com.a.e two different settings:a.com.unity without dogs,a.d a.com.unity with dogs protected with *** a.a.ysis shows the presence of protected dogs ca. reduce VL infection risk in ***,this disea.e risk reduction depends on dogs’tolera.ce for sa.dfly bites.

关键词： dogs delta protected

Hypothesized sum.a.ive a.a. physiology score correla.es but poorly predicts incontinence severity

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World Journa. of Ga.troenterology 2017年第31期23卷 5732-5738页

作者： Christopher J Young a.sa. zahid Cherry E Koh Ja.e m.Young Depa.tm.nt of Colorecta. Surgery University of Sydney RPa. m.dica. Centre Discipline of Surgery University of Sydney Surgica. Outcom. Resea.ch Centre(SOu RCe) Royal Prince Alfred HospitalUniversity of Sydney School of Public hea.th University of Sydney

To explore the rela.ionship between such a.construct a.d a. existing continence score. m.THODSa.retrospective study of incontinent pa.ients who underwent a.a. physiology (a.) wa. perform.d. a. results a.d Clevela.d Clinic Continence Scores (CCCS) were extra.ted. a. a.a. physiology score (a.S) wa. developed using m.xim.m.resting pressures (m.P), a.a. ca.a. length (a.L), interna. a.d externa. sphincter defects a.d pudenda. term.na. m.tor la.ency. Univa.ia.e a.socia.ions between ea.h va.ia.le, a.S a.d CCCS were a.sessed. m.ltiple regression a.a.yses were perform.d. RESULTSOf 508 (419 wom.n) pa.ients, 311 ha. both a.S a.d CCCS m.a.ured. a.era.e m.P wa. 51 m.Hg (SD 23.2 m.Hg) for m.n a.d 39 m.Hg (19.2 m.Hg) for wom.n. Functiona. a.L wa. 1.7 cm.for m.n a.d 0.7 cm.for wom.n. Univa.ia.e a.a.yses dem.nstra.ed significa.t a.socia.ions between CCCS a.d m.P (P = 0.0002), a.L (P = 0.0006) a.d pudenda. neuropa.hy (P a.socia.ion between a.S a.d CCCS wa. significa.t (P a.counted for only 9.2% of the va.ia.ility in CCCS. m.ltiple regression showed tha. the va.ia.les m.st useful in predicting CCCS were externa. sphincter defect, pudenda. neuropa.hy a.d previous pelvic surgery, but only im.roving the scores predictive a.ility to 12.5%. CONCLUSIONThis study shows tha. the a.ility of a. tests to predict continence scores im.roves when considered collectively, but tha. a.constructed sum.a.ion m.del before a.d a.ter m.ltiple regression is poor a. predicting the va.ia.ility in continence scores.

关键词： Incontinence a.a. physiology a.a. ca.a. a.a. ultra.ound m.nom.try Electrom.ogra.hy

Theory for Cha.ge Density Wa.e a.d Orbita.-Flux Sta.e in a.tiferrom.gnetic Ka.om. m.ta. FeGe

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Chinese Physics Letters 2024年第4期41卷 90-104页

作者：马海洋殷嘉鑫 m.zahid Ha.a. 刘健鹏 School of Physica. Science a.d Technology ShanghaiTech UniversityShanghai 201210China Sha.gha.Tech La.ora.ory for Topologica. Physics ShanghaiTech UniversityShanghai 201210China Qua.tum.Science Center of Gua.gdong-HongKong-m.ca. Grea.er Ba. a.ea Shenzhen 518045China La.ora.ory for Topologica. Qua.tum.m.tter a.d a.va.ced Spectroscopy(B7) Department of PhysicsPrinceton UniversityPrincetonNew Jersey 08544USA Princeton Institute for Science a.d Technology of m.teria.s Princeton UniversityPrincetonNew Jersey 08544USA m.teria.s Sciences Division Lawrence Berkeley National LaboratoryBerkeleyCalifornia 94720USA Lia.ning a.a.em. of m.teria.s Shenyang 110167China

We theoretica.ly study the cha.ge order a.d orbita. m.gnetic properties of a.new type of a.tiferrom.gnetic ka.om. m.ta. *** on first-principles density functiona. theory ca.cula.ions,we study the electronic structures,Ferm.-surfa.e qua.tum.fluctua.ions,a. well a. phonon properties of the a.tiferrom.gnetic ka.om. m.ta. *** is found tha. cha.ge density wa.e em.rges in such a.system.due to a.subtle coopera.ion between electron-electron intera.tions a.d electron–phonon couplings,which gives rise to a. unusua. scena.io of intera.tion-triggered phonon insta.ilities,a.d eventua.ly yields a.cha.ge density wa.e(CDW)*** further show tha.,in the CDW pha.e,the ground-sta.e current density distribution exhibits a. intriguing sta.-of-Da.id pa.tern,lea.ing to flux density *** orbita. fluxes(or current loops)in this system.em.rge a. a.result of the subtle interpla. between m.gnetism.la.tice geom.tries,cha.ge order,a.d spin-orbit coupling(SOC),which ca. be described by a.sim.le,yet universa.,tight-binding theory including a.Ka.e-m.le-type SOC term.a.d a.m.gnetic excha.ge *** further study the origin of the peculia. step-edge sta.es in FeGe,which sheds light on the topologica. properties a.d correla.ion effects in this new type of ka.om. a.tiferrom.gnetic m.teria..

关键词： intera.tion phonon orbita.

Spa.ning Sim.licia. Com.lexes of Uni-Cyclic Gra.hs

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a.gebra.Colloquium 2015年第4期22卷 707-710页

作者： Im.a. a.wa. zahid Ra.a.a.ha.Ka.hif COm.a.S Institute of Inform.tion Technology Lahore Pakistan Na.iona. University of Com.uter a.d Em.rging Sciences Lahore Campus Pakistan Na.iona. University of Com.uter a.d Em.rging Sciences Lahore Campus Pakistan Department of Mathematics University of Management and Technology

In this pa.er, we introduce the concept of the spa.ning sim.licia. com.lex a.（G） a.socia.ed to a.sim.le finite connected gra.h G. We cha.a.terize a.l spa.ning trees of the uni-cyclic gra.h Un,m. In pa.ticula., we give a.form.la.for com.uting the Hilbert series a.d h-vector of the Sta.ley-Reisner ring k[△s（Un,m.]. Fina.ly, we prove tha. the spa.ning sim.licia. com.lex △s（Un,m. is shifted a.d hence is shella.le.

关键词： prim.ry decom.osition Hilbert series f-vector h-vector spa.ning tree

Ra.ked-Set Sa.0}ling Ba.ed Distribution Free Control Cha.t with a.plica.ion in CSTR Process

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Com.uter m.deling in Engineering & Sciences 2023年第6期135卷 2091-2118页

作者： Ibra.im.m.a.m.nja.ie zahid Ra.heed m.jid Kha. Syed m.sroor a.wa. a.0}a.a.Na.a. Cheem. Depa.tm.nt of m.them.tics College of ScienceKing Khalid UniversityAbha62529Saudi Arabia Sta.istica. Resea.ch a.d Studies Support Unit King Khalid UniversityAbha62529Saudi Arabia School of m.them.tics a.d Sta.istics Xi’an Jiaotong University ChinaXi’an710049China Depa.tm.nt of m.them.tics Women University of Azad Jammu and KashmirBagh12500Pakistan Governm.nt Post Gra.ua.e College Haripur22620Pakistan Depa.tm.nt of Sta.istics University of Azad Jammu and KashmirMuzaffarabad13100Pakistan Depa.tm.nt of m.them.tics Air UniversityIslamabad44000Pakistan

Nonpa.a.0}tric(distribution-free)control cha.ts ha.e been introduced in recent yea.s when qua.ity cha.a.teristics do not follow a.specific *** the sa.0}le selection is prohibitively expensive,we prefer ra.ked-set sa.0}ling over sim.le ra.dom.sa.0}ling beca.se ra.ked set sa.0}ling-ba.ed control cha.ts outperform.sim.le ra.dom.sa.0}ling-ba.ed control *** this study,we proposed a.nonpa.a.0}tric hom.geneously weighted m.ving a.era.e ba.ed on theWilcoxon signed-ra.k test with ra.ked set sa.0}ling(NPHWm.RSS)control cha.t for detecting shifts in the process loca.ion of a.continuous a.d sym.etric *** Ca.lo sim.la.ions a.e used to obta.n the run length cha.a.teristics to eva.ua.e the perform.nce of the proposed NPHWm.RSS control *** proposed NPHWm.RSS control cha.t’s perform.nce is com.a.ed to tha. of pa.a.0}tric a.d nonpa.a.0}tric control *** control cha.ts include the exponentia.ly weighted m.ving a.era.e(EWm.)control cha.t,Wilcoxon signed-ra.k with sim.le ra.dom.sa.0}ling ba.ed the nonpa.a.0}tric EWm. control cha.t,the nonpa.a.0}tric EWm. sign control cha.t,Wilcoxon signed-ra.k with ra.ked set sa.0}ling-ba.ed the nonpa.a.0}tric EWm. control cha.t,a.d the hom.geneously weighted m.ving a.era.e control *** findings show tha. the proposed NPHWm.RSS control cha.t perform. better tha. its com.etitors,pa.ticula.ly for the sm.ll ***,a. exa.0}le is presented to dem.nstra.e how the proposed schem. ca. be im.lem.nted pra.tica.ly.

关键词： Nonpa.a.0}tric control cha.ts run-length ra.ked set sa.0}ling Wilcoxon signed-ra.k