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f.ow Management Mechanism in Sof.ware-Def.ned Network

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Computers, Materials & Continua 2022年第1期70卷 1437-1459页

作者： eugene Tan Yung-Wey Chong Mohammed f.R.Anbar National Advanced IPv6 Centre Universiti Sains MalaysiaUSMPenangMalaysia

Sof.ware-def.ned networking(SDN)is a paradigm shif. in modern ***,centralised controller architecture in SDNimposed f.ow setup overhead issue as the control plane handles all f.ows regardless of.size and *** f.ameworks strictly reduce control plane overhead and it does not f.cus on rule placement of.the f.ows ***,existing f.ameworks do not f.cus on managing elephant f.ows like ***,the proposed mechanism will use the f.ow statistics gathering method such as random packet sampling to determine elephant f.ow and microf.ow via a predef.ned *** mechanism will ensure that the control plane works at an optimum workload because the controller only manages elephant f.ows via reactive routing and rule placement *** routing has reduced link bandwidth usage below the pre-def.ned ***,rule placement has increased average throughput and total transf.r to 238%.Meanwhile,the data plane switches will be able to f.rward microf.ows via multipath wildcard routing without invoking controller in greater responding time by 85 ms f.ster in two Transmission Control Protocol(TCP)traf.ic and achieved 11%and 12%higher total transf.r size and throughput ***,the controller’s workload reduced signif.cantly to 48%in two TCP traf.ic.

关键词： Sof.ware-def.ned network controller f.ow management

High quality large single crystals of.metal halide perovskites f.r optoelectronic applications

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Science China Chemistry 2017年第10期60卷 1326-1327页

作者： eugene A.Katz Alexandre Yersin Department of.Solar Energy and Environmental Physics J. Blaustein Institutes for Desert Research Ben-Gurion University of the Negev Sede Boqer Campus 8499000 Israel Ilse-Katz Institute f.r Nanoscale Science and Technology Ben-Gurion University of the Negev Beer Sheva 8410501 lsrael

As the technological development of.large single-crystalline waf.rs have revolutionized many industries including electronics and photovoltaics,one can predict that the availability of.large single-crystalline perovskite crystals and waf.rs can revolutionize its broad applications in photodetectors,solar cells,LEDs,lasers,*** 2015,Liu et al.

关键词： crystalline halide perovskite technological electronics inverse optoelectronic waf.r availability render

Alternative kind of.hydrogen atoms as a possible explanation f.r the latest puzzling observation of.the 21 cm radio line f.om the early Universe

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Research in Astronomy and Astrophysics 2020年第7期20卷 172-176页

作者： eugene Oks Physics Department 380 Duncan DriveAuburn UniversityAuburnAL 36849USA

There is a puzzling astrophysical result concerning the latest observation of.the absorption prof.le of.the redshif.ed radio line 21 cm f.om the early Universe(as described in Bowman et al.). The amplitude of.the prof.le was more than a f.ctor of.two greater than the largest predictions. This could mean that the primordial hydrogen gas was much cooler than expected. Some explanations in the literature suggested a possible cooling of.baryons either by unspecif.ed dark matter particles or by some exotic dark matter particles with a charge a million times smaller than the electron charge. Other explanations required an additional radio background. In the present paper, we entertain a possible dif.erent explanation f.r the above puzzling observational result: the explanation is based on the alternative kind of.hydrogen atoms(AKHA),whose existence was previously demonstrated theoretically, as well as by the analysis of.atomic experiments. Namely, the AKHA are expected to decouple f.om the cosmic microwave background(CMB) much earlier(in the course of.the Universe expansion) than usual hydrogen atoms, so that the AKHA temperature is signif.cantly lower than that of.usual hydrogen atoms. This seems to lower the excitation(spin) temperature of.the hyperf.ne doublet(responsible f.r the 21 cm line) suf.iciently enough f.r explaining the above puzzling observational result. This possible explanation appears to be more specif.c and natural than the previous possible explanations. f.rther observational studies of.the redshif.ed 21 cm radio line f.om the early Universe could help to verif. which explanation is the most relevant.

关键词： Cosmology:Early Universe explanation of.the puzzle of.21cm radio line Galaxies:intergalactic medium Cosmology:observations Cosmology:theory

Galactic Dark Matter Halos Containing H Ⅰ Regions:A Possible Overestimation of.the Column Densities

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Research in Astronomy and Astrophysics 2023年第3期23卷 100-103页

作者： eugene Oks Physics Department Auburn UniversityAuburnAL 36849USA

We analyze how the column density of.hydrogen atoms in the HⅠregions,observed in dark matter halos of.a number of.galaxies,can be *** we study how the determination of.the column density of.hydrogen atoms f.om the observed astrophysical data would be af.ected by the possible presence of.the Second f.avor of.Hydrogen Atoms(Sf.A),whose existence had been previously demonstrated in f.ur dif.erent types of.atomic experiments and had helped in explaining two puzzling astrophysical observations:the anomalous absorption in the 21 cm line f.om the early Universe and the smoother,less clumpy distribution of.dark matter in the Universe than predicted by Einstein’s *** a model example we demonstrate that the neglect of.the Sf.A leads to the overestimation of.the column density of.hydrogen atoms in dark matter halos by about 30%.We perf.rm these relatively simple estimates just to get the message across and to motivate f.rther corresponding theoretical and experimental studies.

关键词： galaxies anomalous estimation

DES map shows a smoother distribution of.matter than expected:a possible explanation

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Research in Astronomy and Astrophysics 2021年第10期21卷 1-4页

作者： eugene Oks Physics Department 380 Duncan DriveAuburn UniversityAuburnAL 36849USA

The largest and most detailed map of.the distribution of.dark matter in the Universe has been recently created by the Dark Energy Survey(DES)*** distribution was f.und to be slightly(by a f.w percent)smoother and less clumpy than predicted by general *** result was considered as a hint of.some new physical *** the present paper we of.er a relatively simple model that could explain the above result without resorting to any new physical *** model deals with the dynamics of.a system consisting of.a large number of.gravitating neutral particles,whose mass is equal to the mass of.hydrogen *** central point of.the model is a partial inhibition of.the gravitation f.r a relatively small subsystem of.the entire *** would be suf.icient f.r this subsystem to constitute just about a f.w percent of.the total ensemble of.particles f.r explaining the f.w percent more smooth distribution of.dark matter(observed by the DES team)compared to the prediction of.general *** most viable candidate f.r the dark matter particles in this model is the second f.avor of.hydrogen atoms(Sf.A)that has only S-states and theref.re does not couple to the electric dipole radiation or even to higher multipole radiation,so that the Sf.A is practically *** Sf.A has experimental conf.rmation f.om atomic experiments,it does not go beyond the Standard Model,it is based on standard quantum mechanics and it explains puzzling astrophysical observations of.the redshif.ed line 21 cm f.om the early ***,our model explaining the DES result of.a little too smooth distribution of.dark matter without resorting to any new physical laws seems to be self.consistent.

关键词： (cosmology:)dark matter gravitation atomic processes astroparticle physics

Geographic variation in growth and phenology of.two dominant central US grasses:consequences f.r climate change

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Journal of.Plant Ecology 2014年第3期7卷 211-221页

作者： Amanda L.Giuliani eugene f.Kelly Alan K.Knapp Department of.Biology Colorado State UniversityFort CollinsCO 80523USA Department of.Soils and Crops Science Colorado State UniversityFort CollinsCO 80523USA Graduate Degree Program in Ecology and Department of.Biology Colorado State UniversityFort CollinsCO 80523USA

Aims The rate of.climate change may exceed many plant species’migration rates,particularly f.r long-lived perennial species that dominate most *** bioclimatic envelopes shif. more rapidly than dominant species can migrate,individuals located peripheral to biomes or in adjacent biomes may become a signif.cant source of.traits f.r f.ture dominant populations(DPs).Thus,traits of.individuals f.om peripheral populations(PPs)may af.ect f.ture ecosystem f.nctioning more than those of.today’s *** We assessed key traits of.individuals collected f.om populations that currently dominate two central US grasslands,the shortgrass steppe(Bouteloua gracilis)and the tallgrass prairie(Andropogon gerardii).We compared these to individuals f.om PPs in a reciprocal-transplant common garden experiment with gardens at the Shortgrass Steppe Long Term Ecological Research site in Colorado and the Konza Prairie Biological Station Long Term Ecological Research site in *** and PPs were subjected to high and reduced water availability in common gardens located in each *** measured included the f.llowing:individual plant biomass,reproductive allocation,specif.c leaf.area(SLA)and plant–water *** f.cused on the climate-change relevant comparisons of.traits f.om PPs versus DPs expressed under the climate of.*** f.ndings PPs of.*** dif.ered f.om DPs primarily in phenological *** a semiarid shortgrass steppe climate,PPs initiated f.owering later in the season,produced f.wer reproductive tillers and were more sensitive to water *** dif.erences between populations were *** ***,biomass in PPs was 50%lower than in DPs under the mesic tallgrass prairie climate and reproductive tillers were considerably smaller,despite higher SLA in *** of.PPs was less sensitive to water stress,*** these results,we conclude that key traits of.PPs dif.ered f.om DPs in both grassland types,but potential ef.ects on r

关键词： grassland phenology productivity traits water stress

Intermediate f.nancial management / 7th ed.

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Reminiscing my sixty year pursuit of.the physics of.the Sun and the Galaxy

2002年

作者： Brigham eugene f.

来源：畅想之星图书光盘版（南... 评论

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Research in Astronomy and Astrophysics 2014年第1期14卷 1-14页

作者： eugene N.Parker Department of.Physics Department of Astronomy and AstrophysicsUniversity of Chicago

Reminiscing begins with childhood and passes on to student days through graduate school and the f.rst real contact with research. Then early academic posi- tions and stumbling ef.orts to pursue my ideas. The f.rst signif.cant progress came as a research associate with Prof. W. M. Elsasser at the University of.Utah, beginning with an introduction to magnetohydrodynarnics and the generation of.the geomagnetic f.eld through induction in the liquid metal core of.Earth. A move to the University of.Chicago to work with Prof. J. A. Simpson, on the implications of.cosmic ray varia- tions and interplanetary magnetic f.elds, led to the theory of.coronal expansion and the solar wind and then to exploring the dynamical ef.ects of.cosmic rays on the galactic magnetic f.eld. Spontaneous current sheets and intrinsic rapid reconnection in interlaced magnetic f.eld line topologies were the next big project, leading up to retirement. f.nally, it is a pleasure to recall my many associates, whose f.esh thinking helped stimulate the daily research activities.

关键词： dynamo -- magnetohydrodynamics -- plasma

Intermediate f.nancial management 7th ed.

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