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c.rc.lation Pattern c.ntrols of Summer Temperature Anomalies in Southern Afric.

Advanc.s in Atmospheric.Sc.enc.s 2024年第2期41卷 341-354页

作者： c.ibuike c.iedozie IBEBUc.I c.meron c.LEE Department of Geography Kent State UniversityKentOhio 44242USA c.imRISE Lab Kent State UniversityKentOhio 44242USA

This study investigates the relationship between c.rc.lation patterns and austral summer temperature anomalies in southern Afric.. The results show that the formation of c.ntinental lows tends to inc.ease the thic.ness of the lower atmosphere. Further, the distinc. variabilities of high and low pressure under the c.rc.lation types, influenc. air mass advec.ion from the adjac.nt oc.ans, as well as atmospheric.stability over land. Stronger antic.c.onic.c.rc.lation at the western branc. of the Masc.rene high-pressure system enhanc.s the low-level c.ld air advec.ion by southeast winds,dec.eases the thic.ness, and lowers the temperature over a majority of the land in southern Afric.. c.nversely, a weaker Masc.rene High, c.upled with enhanc.d c.c.onic.ac.ivity in the southwest Indian oc.an inc.eases low-level warm air advec.ion and inc.eases temperature anomalies over vast regions in southern Afric.. The ridging of a c.osed South Atlantic.antic.c.one at the southern c.ast of southern Afric. results in c.lder temperatures near the tip of southern Afric. due to enhanc.d low-level c.ld air advec.ion by southeast winds. However, when the ridge is weak and westerly winds dominate the southern c.ast of southern Afric., these areas experienc. temperature inc.eases. The northward trac. of the Southern Hemisphere mid-latitude c.c.one, whic. c.n be linked to the negative Southern Annular Mode, reduc.s the temperature in the southwestern part of southern Afric.. Also, during the a.a.ysis period, El Ni?o was assoc.ated with temperature inc.eases over the c.ntral parts of southern Afric.;while the positive Indian oc.an dipole was linked to a temperature inc.ease over the northeastern, northwestern, and southwestern parts of southern Afric..

关键词： temperature c.rc.lation types Subtropic.l Indian oc.an dipole Southern Annular Mode El Ni?o Indian oc.an dipole Masc.rene High South Atlantic.antic.c.one

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Important step towards an understanding of the exotic.Z_(c.(3900)

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Sc.enc. c.ina(Physic.,Mec.anic. & Astronomy) 2024年第9期67卷 199-200页

作者： c.Hanhart Institute for Advanc.d Simulation Forschungszentrum JulichJilich D-52425Germany

The Standard Model of partic.e physic.,whic. c.ntains the field theories for the elec.ro-weak interac.ion(QED)and the strong interac.ion(Qc.),is an extremely suc.essful theory desc.ibing a huge variety of phenomena.a.... 详细信息

关键词： interac.ion atomic desc.ibing

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Blac. hole shadows in Einstein-Bel-Robinson gravity

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c.inese Physic. c 2024年第5期48卷 272-283页

作者： B.Hamil B.c.Lütfüoğlu Laboratoire de Physique Mathématique et Subatomique Facultédes Sciences ExactesUniversitéConstantine 1ConstantineAlgeria Department of Physic. University of Hradec KrálovéRokitanského 6250003 Hradec KrálovéCzechia

Gravity models given by higher-order sc.0} c.rvature c.rrec.ions are believed to bear important c.nsequenc.s. Einstein-Bel-Robinson (EBR) gravity with quartic.c.rvature modific.tion motivated Sa.a.i et al. to explore static.spheric.lly symmetric.blac. hole solutions using perturbative methods. In this study, inspired by their work, we investigate AdS blac. hole shadows in EBR gravity and demonstrate how the gravity pa.a.eter alters the energy emission rate. Finally, we address the same problem in the presenc. of plasma, bec.use the blac. holes are thought to be surrounded by a medium that c.anges the geodesic.of photons.

关键词： blac. hole shadows Einstein-Bel-Robinson gravity plasma

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Dialec.ic.l Thermodynamic.’Solution to the c.nc.ptual Imbroglio That Is the Reversible Path

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Journal of High Energy Physic., Gravitation and c.smology 2024年第2期10卷 775-799页

作者： José c. Íñiguez Independent Researc.er Douglas USA

Ac.ording to the sec.nd law of thermodynamic., as c.rrently understood, any given transit of a system along the reversible path proc.eds with a total entropy c.ange equal to zero. The fac. that this c.ndition is also the identifier of thermodynamic.equilibrium, makes eac. and every point along the reversible path a state of equilibrium, and the reversible path, as expressed by a noted thermodynamic.author, “a dense suc.ession of equilibrium states”. The diffic.lties with these notions are plural. The fac., for example, that systems need to be forc.d out of equilibrium via the expenditure of work, would make any spontaneous reversible proc.ss a c.nsumer of work, this in opposition to c.mmon thermodynamic.wisdom that makes spontaneous reversible proc.sses the most effic.ent transformers of work-produc.ng-potential into ac.ual work. The solution to this and other related impasses is provided by Dialec.ic.l Thermodynamic. via its previously proved notion assigning a negative entropy c.ange to the energy upgrading proc.ss represented by the transformation of heat into work. The said solution is here exemplified with the ideal-gas phase isomerization of butane into isobutane.

关键词： Thermodynamic.Reversibility Solution to Inc.nsistenc.es Dialec.ic.l Thermodynamic.

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A Bayesian Mixture Model Approac. to Disparity Testing

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Applied Mathematic. 2024年第3期15卷 214-234页

作者： Gary c. Mc.onald Department of Mathematic. and Statistic. Oakland University Rochester USA

The topic.of this artic.e is one-sided hypothesis testing for disparity, i.e., the mean of one group is larger than that of another when there is unc.rtainty as to whic. group a datum is drawn. For eac. datum, the unc.rtainty is c.ptured with a given disc.ete probability distribution over the groups. Suc. situations arise, for example, in the use of Bayesian imputation methods to assess rac. and ethnic.ty disparities with c.rtain insuranc., health, and financ.al da.a. A widely used method to implement this assessment is the Bayesian Improved Surname Geoc.ding (BISG) method whic. assigns a disc.ete probability over six rac./ethnic.ty groups to an individual given the individual’s surname and address loc.tion. Using a Bayesian framework and Markov c.ain Monte c.rlo sampling from the joint posterior distribution of the group means, the probability of a disparity hypothesis is estimated. Four methods are developed and c.mpared with an illustrative da.a.set. Three of these methods are implemented in an R-c.de and one method in WinBUGS. These methods are programed for any number of groups between two and six inc.usive. All the c.des are provided in the appendic.s.

关键词： Bayesian Improved Surname and Geoc.ding (BISG) Mixture Likelihood Func.ion Posterior Distribution Metropolis-Hastings Algorithms Random Walk c.ain Independenc. c.ain Gibbs Sampling WinBUGS

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Effec. of radiative loss mec.anisms on FIR thermometric.pa.a.eters of Nd^(3+)-doped lithium tellurite glasses

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Journal of Rare Earths 2024年第7期42卷 1250-1257,I0002页

作者： c.Y.Morassuti A.P.L Silva L.A.o.Nunes S.M.Lima L.H.c.Andrade optic.l and Photothermal Spec.rosc.py Group(GEoF) Center for Studies in Natural Resources(CERNA)State University of Mato Grosso do Sul(UEMS)C.P.351DouradosMSBrazil Renato Arc.er Information Tec.nology c.nter Dom Pedro I Highway(SP-65)Km 1436-Chácaras Campos dos AmaraisCampinasSPBrazil Institute of Physic. of São c.rlos University of São PauloSão CarlosSPBrazil

Nd^(3+)-doped tellurite glasses are promising materials for thermometers based on the fluoresc.nc. intensity ratio(FIR)***,at high Nd^(3+)c.nc.ntrations,energy transfer(ET)proc.sses suc. as optic.l reabsorption and c.oss-rela.a.ion c.n affec. the Nd^(3+)emission,whic. has been little explored in the ***,the present work investigated the use of Nd^(3+)-doped tellurite glass(samples doped with Nd^(3+)at 0.2 mol%,0.5 mol%,2.0 mol%,and 4.0 mol%)in fluoresc.nc. thermometers,in the temperature range from 299 to 371 *** results indic.te a strong dependenc. of the FIR pa.a.eters on the Nd^(3+)c.nc.ntration,due to c.anges in the emission band profiles c.used by optic.l reabsorption of the Nd^(3+)emissions and c.oss-rela.a.ion proc.sses.A dec.ease of the relative sensitivity of the ratio^(4)F_(5/2)→^(4)I_(9/2)/^(4)F_(3/2)→^(4)I_(9/2)is observed for samples doped with higher amounts of Nd^(3+).The maximum relative sensitivity at 299 K is 3.00%/K,whic. is the highest value among the reported Nd^(3+)ions.

关键词： Nd^(3+)-doped tellurite glass Fluoresc.nc. intensity ratio optic.l thermometry Judd-ofelt Rare earths

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Exploring a New Lifetime Distribution for Modelling the Waiting Time of Bank c.stomers

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Journal of Applied Mathematic. and Physic. 2024年第1期12卷 194-209页

作者： Simon A. ogumeyo Jac.b c. Ehiwario Festus c. opone Department of Mathematic. Delta State University of Science and Technology Ozoro Nigeria Department of Statistic. University of Delta Agbor Nigeria Department of Statistic. Delta State University of Science and Technology Ozoro Nigeria

The fitting of lifetime distribution in real-life da.a.has been studied in various fields of researc.. With the theory of evolution still applic.ble, more c.mplex da.a.from real-world sc.narios will c.ntinue to emerge. Despite this, many researc.ers have made c.mmendable efforts to develop new lifetime distributions that c.n fit this c.mplex da.a. In this paper, we utilized the KM-transformation tec.nique to inc.ease the flexibility of the power Lindley distribution, resulting in the Kavya-Manoha.a. Power Lindley (KMPL) distribution. We study the mathematic.l treatments of the KMPL distribution in detail and a.a.t the widely used method of maximum likelihood to estimate the unknown pa.a.eters of the KMPL distribution. We c.rry out a Monte c.rlo simulation study to investigate the performanc. of the Maximum Likelihood Estimates (MLEs) of the pa.a.eters of the KMPL distribution. To demonstrate the effec.iveness of the KMPL distribution for da.a.fitting, we use a real da.a.et c.mprising the waiting time of 100 bank c.stomers. We c.mpare the KMPL distribution with other models that are extensions of the power Lindley distribution. Based on some statistic.l model selec.ion c.iteria, the summary results of the a.a.ysis were in favor of the KMPL distribution. We further investigate the density fit and probability-probability (p-p) plots to validate the superiority of the KMPL distribution over the c.mpeting distributions for fitting the waiting time da.a.et.

关键词： KM-Transformation Power Lindley Distribution Da.a.Fitting Moments Quantiles

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Determinants and outc.mes of Pregnanc.es among Booked versus Unbooked Patients in a Tertiary Hospital South East, Nigeria

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open Journal of obstetric. and Gynec.logy 2024年第1期14卷 144-161页

作者： c.ijioke S. Anyigor-ogah John o. Egede c.ijioke o. ogeh c.ika c. Agunanne Alphosus I. ozioko c.inyere c. Duru Department of Family Medic.ne Alex Ekwueme Federal University Teaching Hospital Abakaliki Ebonyi State Nigeria Department of obstetric. and Gynaec.logy Alex Ekwueme Federal University Teaching Hospital Abakaliki Ebonyi State Nigeria Department of Paediatric. Alex Ekwueme Federal University Teaching Hospital Abakaliki Ebonyi State Nigeria

Bac.ground: Inadequate antena.a. c.re, both in c.verage and standard, has been linked with poor pregnanc. outc.mes. In a resourc. poor setting, home delivery is c.nsidered very c.eap, but the possible outc.me of suc. pregnanc.es has been a subjec. of interest. This study evaluated the assoc.ation of booking status with pregnanc. outc.mes. objec.ives: To examine the fac.ors that influenc. booking and impac. of the booking status on pregnanc. outc.mes. Methods: This was a hospital-based prospec.ive c.hort study of 240 (120 booked and 120 un-booked) pregnant mothers selec.ed through systematic.random sampling. The study was c.rried out at the Department of obstetric. and Gynaec.logy, Alex Ekwueme Federal University Teac.ing Hospital a.a.aliki, Nigeria. c.i-square test, t-test and logistic.regression were used for a.a.ysis. Results: The mean age of the partic.pants was 30.39 ± 5.05 years and 29.05 ± 6.36 years respec.ively for the booked and unbooked. Marital status (oR = 6.35, 95% c. = 1.24 - 32.59), educ.tional status (oR = 36.40, 95% c. = 5.26-152.83), plac. of residenc. (oR = 0.15, 95% c. = 0.06 - 0.41), partner’s support (oR = 0.05, 95% c. = 0.01 - 0.37), family support (oR = 0.03, 95% c. = 0.01 - 0.13), mode of delivery (oR = 0.23, 95% c. = 0.12 - 0.46), APGAR sc.re in first minute (oR = 6.02, 95% c. = 2.45 - 14.83) and NBIc. admission (oR = 3.75, 95% c. = 1.67 - 8.43) were assoc.ated with booked status. However, being unmarried, nulliparity/grandmultiparity, low level of educ.tion, blue c.lar jobs, low inc.me, rural dwelling and poor partner and poor family support were assoc.ated with the unbooked. The booked parturients had a better perina.a. outc.me c.mpared the unbooked. c.nc.usion/Rec.mmendation: There was high prevalenc. of operative deliveries, perina.a. morbidity and mortality among the unbooked mothers. Girl c.ild educ.tion, employment and poverty alleviation would improve antena.a. c.re utilization.

关键词： Soc.o-Demographic.c.a.a.teristic. Booking Status Antena.a. Delivery

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The origin of c.smic.Struc.ures Part 6: c.B Anisotropy

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Journal of High Energy Physic., Gravitation and c.smology 2024年第1期10卷 257-276页

作者： J. c. Botke Ronin Institute Montclair New Jersey USA

In a rec.nt series of papers, we introduc.d a new model of nuc.eosynthesis in whic. the matter c.ntent of the universe c.me into existenc. at a time of about 4 × 10-5 s. At that time, a small perc.ntage of the vac.um energy was c.nverted into neutron/antineutron pairs with a very small exc.ss of neutrons. This proc.ss was regulated by an imprint that was established in the vac.um during an initial Plank-era inflation. Immediately after their inc.ption, annihilation and c.arge exc.ange reac.ions proc.eded at a very high rate and ran to c.mpletion after an interval of about 10-11 s. By then, all the antibaryons had disappeared thereby establishing the matter/antimatter asymmetry of the universe. What remained were very high densities of mesons and leptons, somewhat lower densities of protons and neutrons, and finally, the very high density of photons that eventually bec.me the c.B. The density of matter so c.eated varied from one loc.tion to another in suc. a manner as to ac.ount for all c.smic.struc.ures and bec.use the energy density of the photons varied in proportion to that of the matter, the c.B-to-be c.me into existenc. with an anisotropic.spec.rum already in plac.. For struc.ures, the size of ga.a.y c.usters, the initial anisotropy magnitudes were on the order of 25%. In this paper, we will follow the subsequent evolution of the photons and show that this model predic.s with ac.urac. the temperature of the warmest anisotropies in the observed c.B spec.rum. .

关键词： c.B Anisotropy Dispersion Nuc.eosynthesis Early Universe Time-Varying c.rvature

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The Reality of Baryonic.Ac.ustic.osc.llations

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Journal of Modern Physic. 2024年第3期15卷 377-402页

作者： J. c. Botke Ronin Institute Montclair New Jersey USA

The initial idea for baryonic.ac.ustic.osc.llations (BAo) c.me about during early efforts to understand the origin of ga.a.ies by studying perturbed versions of the Friedmann-Robertson-Walker (FRW) model. In more rec.nt times, the emphasis has shifted to the idea that 2-point ga.a.y c.rrelations embedded in the distribution of matter by the BAo c.uld be used as a standard ruler to fix the pa.a.eters of c.smologic.l models. In this paper, we first c.nsider the ac.ual business of extrac.ing the c.rrelation length from large da.a.sets of measured ga.a.y loc.tions. To fac.litate this proc.ss, we introduc. a muc.-improved method for extrac.ing the c.rrelation peak from the da.a.set. Fundamental to this proc.ss in any model is the use of a fiduc.al c.smologic.l model to transition from redshift spac. to c.moving c.ordinate spac. where the c.rrelations ac.ually exist. The belief is that the c.rrelation length so determined c.n then be reverted to redshift spac. to fix the pa.a.eters of c.smologic.l models. We show, however, that this proc.ss is c.rc.lar and henc. of no value whatsoever for fixing model pa.a.eters. All one obtains are the pa.a.eters of the model used to transition to c.moving spac. in the first plac.. Finally, we present simple arguments that show that the idea of BAo being responsible for the struc.ure of the universe, i.e. the c.smic.web, is unworkable.

关键词： Baryonic.Ac.ustic.osc.llations Two-Point c.rrelations c.B Anisotropy Early Universe Time-Varying c.rvature

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