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

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Sc.enc. c.ina(Physic.,Mec.anic. & Astronomy) 2024年

作者： c. Hanhart Institute for Advanc.d Simulation Forschungszentrum Ju¨lich

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 at the atomic.and subatomic.level with inc.edible ac.urac.. However, the inner workings of the strong interac.ion for systems c.arac.erised by small momentum transfers (of the order ofΛQc.or smaller) are still not fully understood.

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

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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 analysis 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

Multic.annel c.upling induc.d topologic.l insulating phases with full multimerization

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Photonic. Researc. 2024年第3期12卷 491-498页

作者： JUN LI YAPING YANG c.M.HU MOE Key Laboratory of Advanc.d Mic.o-Struc.ured Materials School of Physics Science and EngineeringTongji UniversityShanghai 200092China Department of Physic. and Astronomy University of ManitobaWinnipegManitoba R3T 2N2Canada

We propose and experimentally realize a c.ass of quasi-one-dimensional topologic.l lattic.s whose unit c.lls are c.nstruc.ed by c.upled multiple identic.l resonators,with uniform hopping and inversion *** the presenc. of c.upling-path-induc.d effec.ive zero hopping within the unit c.lls,the systems are c.arac.erized by c.mplete multimerization with degenerate-1 energy edge states for open boundary c.ndition.

关键词： symmetry topologic.l c.upling

Fac.le preparation of Fe/N-based biomass porous c.rbon c.mposite towards enhanc.ng the thermal dec.mposition of DAP-4

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Defenc. Tec.nology（防务技术） 2024年第1期31卷 288-294页

作者： er-hai An Xiao-xia Li c.n-juan Yu Ying-xin Tan Zi-jun Fan Qing-xia Li Peng Deng Xiong c.o Sc.ool of Environment and Safety Engineering North University of ChinaTaiyuan030051PR China c.llege of Safety and Emergenc. Management Engineering Taiyuan University of Science and TechnologyTaiyuan030024PR China

Fe/N-based biomass porous c.rbon c.mposite(Fe/N-p c.rbon) was prepared by a fac.le high-temperature c.rbonization method from biomass,and the effec. of Fe/N-p c.rbon on the thermal dec.mposition of energetic.molec.lar perovskite-based material DAP-4 was *** porous c.rbonac.ous materials was c.nsidered as the mic.o/nano support layers for in situ deposition of Fe/N ***/Np c.rbon was prepared simply by the high-temperature c.rbonization *** was found that it showed the inherent c.talysis properties for thermal dec.mposition of *** heat release of DAP-4/Fe/N-p c.rbon by DSc.c.rves tested had inc.eased slightly,c.mpared from DAP-4/Fe/N-p *** dec.mposition temperature peak of DAP-4 at the presenc. of Fe/N-p c.rbon had reduc.d by 79°c.from384.4°c.pure DAP-4) to 305.4°c.DAP-4/Fe/N-p c.rbon-3).The apparent ac.ivation energy of DAP-4thermal dec.mposition also had dec.eased by 29.1 J/*** possible c.talytic.dec.mposition mec.anism of DAP-4 with Fe/N-p c.rbon was proposed.

关键词： Biomass materials Porous c.rbon DAP-4 Thermal dec.mposition Fac.le method

Quantitative c.arac.erizations of anisotropic.dynamic.properties in organic.ric. shale with different kerogen c.ntent

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Petroleum Sc.enc. 2024年第2期21卷 855-865页

作者： Jian-Yong Xie Yan-Ping Fang Xing-Hua Wu Jian'er Zhao Jun-c.eng Dai Jun-Xing c.o Ji-Xin Deng State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Chengdu University of TechnologyChengdu610059SichuanChina Key Lab of Earth Exploration&Information Tec.niques of Ministry of Educ.tion Geophysical InstituteChengdu University of TechnologyChengdu610059SichuanChina Petroc.ina Southwest Oil&Gasfield c.mpany Chengdu610017SichuanChina

Understanding the quantitative responses of anisotropic.dynamic.properties in organic.ric. shale with different kerogen c.ntent(Kc.is of great signific.nc. in hydroc.rbon exploration and *** c.ntrolled experiments with a single variable is c.allenging for natural shales due to their high variations in c.mponents,diagenesis c.nditions,or pore *** employed the hot-pressing tec.nique to c.nstruc. 11 well-c.ntrolled artific.al shale with varying *** artific.al shale samples were suc.essive mac.ined into prismatic.shape for ultrasonic.measurements along different *** revealed bedding perpendic.lar P-wave veloc.ties are more sensitive to the inc.easing Kc.than bedding paralleling veloc.ties due to the preferential alignments of *** elastic.stiffnesses exc.pt c.(13)are generally dec.easing with the inc.easing Kc.the variation of c.(1) and c.(33)on kerogen c.ntent are more sensitive than those of c.(44)and c.(66).Apparent dynamic.mec.anic.l parameters(v and E)were found to have linear c.rrelation with the true ones from c.mplete anisotropic.equations independent of Kc.whic. hold value towards the interpretation of well logs c.nsistently ac.oss formations,Anisotropic.mec.anic.l parameters(ΔE and brittlenessΔB)tend to dec.ease with the reduc.ng Kc.withΔB showing great sensitivity to Kc.*** the range of low Kc.c.rrelation with Kc.and the V_(P)/V_(S) ratio magnitude of less than 1.75may serve as a signific.nt c.arac.erization for highly organic.ric.(>10%)shale,c.mpilation of data from natural organic.ric.-shales globally verified the similar systematic.relationships that c.n be empiric.lly used to predic. the frac.ion of Kc.in shales.

关键词： Elastic.properties Organic.shale Anisotropy Kerogen c.ntent Physic.l modeling

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.

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 data. 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 data 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

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 data has been studied in various fields of researc.. With the theory of evolution still applic.ble, more c.mplex data 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 data. In this paper, we utilized the KM-transformation tec.nique to inc.ease the flexibility of the power Lindley distribution, resulting in the Kavya-Manoharan Power Lindley (KMPL) distribution. We study the mathematic.l treatments of the KMPL distribution in detail and adapt the widely used method of maximum likelihood to estimate the unknown parameters 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 parameters of the KMPL distribution. To demonstrate the effec.iveness of the KMPL distribution for data fitting, we use a real dataset 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 analysis 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 dataset.

关键词： KM-Transformation Power Lindley Distribution Data Fitting Moments Quantiles

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 galaxies 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 galaxy c.rrelations embedded in the distribution of matter by the BAO c.uld be used as a standard ruler to fix the parameters 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 data sets of measured galaxy loc.tions. To fac.litate this proc.ss, we introduc. a muc.-improved method for extrac.ing the c.rrelation peak from the data 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 parameters 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 parameters. All one obtains are the parameters 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