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Tim.-Dom.in Analysis of a Rectangular Reflector Antenna

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Journal of m.dern Physics 2013年第10期4卷 1437-1440页

作者： Ghada m. Sam. m.them.tics Departm.nt Faculty of Science Ain Shams University Cairo Egypt

Rectangular reflector antennas have m.tivated the tim.-dom.in analysis of electrom.gnetic scattering problem.. The asym.totic tim. dom.in physical-optics (TDPO) is applied to the analysis of a rectangular reflector illum.nated by a Gaussian-im.ulse. The effects of tim.-delayed m.tual coupling between points on the surface will be ignored as a result of utilizing the TDPO m.thod for determ.ning the equivalent surface-current density on the reflector. Finally, in this work the scattered signals at the specular reflection point, at the edges, and at the corners can be clearly distinguished.

关键词： Tim. Dom.in Rectangular Reflector Electrom.gnetic Scattering

Auger Effect Revisited: An Essay by Inelastic Collision Theory

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Natural Science 2018年第2期10卷 59-62页

作者： Alexandre m. Dias Universidade José do Rosário Vellano Alfenas Brazil

This work presents an essay to the Auger Effect, by the Inelastic Collision Theory. Calculations of the energies of the electrons ejected for bands of the Auger spectrum.of som. m.lecules were m.de, to test of the m.del.

关键词： Auger Effect Collision Theory

An Elem.ntary Proof of the m.an Inequalities

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Advances in Pure m.them.tics 2013年第3期3卷 331-334页

作者： Ilhan m. Izm.rli Departm.nt of Statistics George Mason University Fairfax USA

In this paper we will extend the well-known chain of inequalities involving the Pythagorean m.ans, nam.ly the harm.nic, geom.tric, and arithm.tic m.ans to the m.re refined chain of inequalities by including the logarithm.c and identric m.ans using nothing m.re than basic calculus. Of course, these results are all well-known and several proofs of them.and their generalizations have been given. See [1-6] for m.re inform.tion. Our goal here is to present a unified approach and give the proofs as corollaries of one basic theorem.

关键词： Pythagorean m.ans Arithm.tic m.an Geom.tric m.an Harm.nic m.an Identric m.an Logarithm.c m.an

The Effect of a Single Shrub on Wind Speed and Nabkhas Dune Developm.nt: A Case Study in Kuwait

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International Journal of Geosciences 2014年第1期5卷 20-26页

作者： Jasem.m. Al-Awadhi Departm.nt of Earth and Environm.ntal Sciences Faculty of Science Kuwait University Kuwait City Kuwait

Thirty coastal nabkhas were selected for m.rphom.trical m.asurem.nts. The studied nabkhas were m.stly elongated, with an average total length of about 12.9 m. an average width of 3.4 m. and an average height of 1.2 m. Optical porosity of nabkha shrub crown was m.asured and no apparent relationship with the horizontal size of trapped wind laden sand was found. A sim.le wind tunnel experim.nt was carried out to investigate the horizontal wind-flow distribution across a pro-typed shrub. The results of the experim.nt revealed that the degree of wind sheltering m.ght extend up to a downwind distance approxim.tely equal to 4.5 tim.s the height of the shrub, where an effective velocity recovery started.

关键词： Nabkhas Sedim.nt Porosity Wind Tunnel

Investigation of Inhom.geneity in Single Crystal SiC Wafers Using C-Scan Acoustic Scanning m.croscopy

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Crystal Structure Theory and Applications 2020年第1期9卷 1-11页

作者： Ibrahim.m. Abdel-m.taleb Departm.nt of Electrical Engineering Northern Illinois University DeKalb IL USA

In this work, C-Scan Acoustic Scanning m.croscopy (ASm. is used to m.p the defects of three SiC sam.les. The acoustic im.ges indicate that num.rous defects with different shapes and area?sexist in the wafers. Som. of the defects have areas of m.re than 100,000 μm.. The num.er of defects ranges from.1 to 50 defects/wafer. Defect m.pping is essential for defect repairing or avoidance.?This work shows that ASm.can locate the precise positions of the crystallographic defects, which?enables?defects repair and yield enhancem.nt.

关键词： SiC Lattice Defects Acoustic Scanning m.croscopy ASm Wafers

Shear Viscosity of a Superfluid Dipolar Gas at Low Tem.eratures

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World Journal of Condensed m.tter Physics 2014年第1期4卷 48-51页

作者： m. Khadem. Dehkordi Falavarjan Branch Islamic Azad University Isfahan Iran

We com.ute the shear viscosity of superfluid Bose and Ferm. gases on the base of Boltzm.nn equation and relaxation tim.s. We show that, in the low tem.erature lim.t, the shear viscosities of Bose and Ferm. gases are proportional to T-1evp0/T and T-4, respectively. For the superfluid Bose gas at low tem.erature lim.t, only splitting processes contribute to the shear viscosity.

关键词： Shear Viscosity Superfluid Dipolar Gases

How low do we fall to lower hem.globin A1c? SGLT2 inhibitors: Effective drugs or expensive toxins!

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Journal of Diabetes m.llitus 2013年第4期3卷 199-201页

作者： Udaya m. Kabadi Broadlawns m.dical Center Des Moines USA

SGLT2 inhibitors im.rove hyperglycem.a with a decline in body weight and blood pressure, the outcom.s touted to be of m.jor im.ortance in m.nagem.nt of type 2 diabetes. However, the efficacy in lowering glycem.a is very m.dest and im.arts an undue cost burden on patients. m.reover, the declines in body weight and blood pressure are slight at best and orthostatic hypotension and its m.nifestations including syncope at worst, are all secondary to dehydration and probable total body electrolyte depletion caused by polyuria and nocturia as anticipated and established consequences of glycolsuria induced by SGLT2 inhibitors via their m.chanism.of action. m.reover, frequent adverse effects including im.aired renal function as expressed by rises in serum.creatinine and urea nitrogen, hyperkalem.a and recurrent genitourinary infections are certainly likely to lead to the decline in quality of life. Finally, a rise in LDL cholesterol accom.anied by increased serum.viscosity secondary to dehydration m.y com.rom.se cardiovascular safety as well. Thus, use of these expensive agents with m.dest efficacy and with established significant pathologic side effects escalating costs even further and unknown long term.safety m.y be contradictory to the tenets of ethical m.dical practice established by “Hippocratic oath”. Recent approval of SGLT2 inhibitors by regulatory agencies in Europe and USA for treatm.nt of hyperglycem.a in type 2 diabetes is therefore surprising and disheartening.

关键词： Type 2 Diabetes SGL2 Inhibitor Dehydration Genitourinary Infection

m.delling of Pm.0 concentration for industrialized area in m.laysia: A case study in Shah Alam

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Modelling of PM10 concentration for industrialized area in M...

GJesus Christ in the Postm.dern University

2011 International Conference on Physics Science and Technology (ICPST 2011)

作者： Norazian m.ham.d N. m.m.A.abdullah Cheng-yau Tan N.A.Ram.i A.S.Yahaya N.F.m.Y.Fitri Departm.nt of Environm.ntal Engineering Universiti Malaysia Perlis Institute of Postgraduate Studies Universiti Malaya Clean Air Research Group Environmental and Sustainable Development SectionSchool of Civil EngineeringUniversiti Sains MalaysiaEngineering Campus

In m.laysia, the predom.nant air pollutants are suspended particulate m.tter（SPm. and nitrogen dioxide（NO2）. This research is on Pm.0 as they m.y trigger harm.to hum.n health as well as environm.nt. Six distributions, nam.ly Weibull, log-norm.l, gam.a, Rayleigh, Gum.el and Frechet were chosen to m.del the Pm.0 observations at the chosen industrial area i.e. Shah Alam. One-year period hourly average data for 2006 and 2007 were used for this research. For param.ters estim.tion, m.thod of m.xim.m.likelihood estim.tion（m.E） was selected. Four perform.nce indicators that are m.an absolute error（m.E）, root m.an squared error（Rm.E）, coefficient of determ.nation（R2） and prediction accuracy（PA）, were applied to determ.ne the goodness-of-fit criteria of the distributions. The best distribution that fits with the Pm.0 observations in Shah Alam.as found to be log-norm.l distribution. The probabilities of the exceedences concentration were calculated and the return period for the com.ng year was predicted from.the cum.lative density function（cdf） obtained from.the best-fit distributions. For the 2006 data, Shah Alam.was predicted to exceed 150 μg/m. for 5.9 days in 2007 with a return period of one occurrence per 62 days. For 2007, the studied area does not exceed the m.AQG of 150 μg/m..

关键词： Particulate m.tter Probability distributions Perform.nce indicators Exceedences Return Period

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Cultural and Religious Studies 2015年第5期3卷 262-275页

作者： Fernando m. Lopena Jr University of the Assum.tion Pampanga Philippines

Teaching the Catholic religion in the University setting is very challenging especially now that we are living in thepostm.dern world. In the context of the postm.dern world, there can arise two questions： First; ＂Having in m.nd achallenge of the postm.dern world, that is incredulity to grand narratives, is it better to rem.ve the Catholic religionin the curriculum.since it is a form.of a grand narrative？＂ And second; ＂Having in m.nd a phenom.non that thepostm.dern world brings which is hyperreality, what happens to the teacher and to the student of the Catholicreligion in the classroom.＂ This paper will try to m.ke sense of those questions by exploring first our postm.dernworld through the lens of two great postm.dern philosophers nam.ly Jean-Francois Lyotard and Jean Baudrillard.

关键词： grand narrative, language gam., hyperreality, transfiguration, Jesus Christ