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Numer.cal solution of the r.tating shallow Water.Flows with Topography Using the Fractional steps Method

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Applied Mathematics 2010年第2期1卷 104-117页

作者： Hossam s. Hassan Khaled T. ramadan sar.at N. Hanna 不详

The two-dimensional nonlinear.shallow water.equations in the pr.sence of Cor.olis for.e and bottom topography ar. solved numer.cally using the fractional steps method. The fractional steps method consists of splitting the multi-dimensional matr.x inver.ion pr.blem into an equivalent one dimensional pr.blem which is successively integrated in ever. dir.ction along the character.stics using the r.emann invar.ant associated with the cubic spline inter.olation. The height and the velocity field of the shallow water.equations over.ir.egular.bottom ar. discr.tized on a fixed Euler.an gr.d and time-stepped using the fractional steps method. Effects of the Cor.olis for.e and the bottom topography for.par.icular.initial flows on the velocity components and the fr.e sur.ace elevation have been studied and the r.sults ar. plotted.

关键词： shallow Water Equations Fractional steps Method r.emann Invar.ants Bottom Topography Cubic spline Inter.olation

Modeling of Tsunami Generation and Pr.pagation by a spr.ading Cur.ilinear.seismic Faulting in Linear.zed shallow-Water.Wave Theor.

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Applied Mathematics 2010年第1期1卷 44-64页

作者： Hossam s. Hassan Khaled T. ramadan sar.at N. Hanna Depar.ment of Basic and Applied science College of Engineering & Technology Arab Academy for Science Technology and Maritime Transport Alexandria Egypt Depar.ment of Engineer.ng Mathematics and Physics Faculty of Engineering Alexandria University Alexandria Egypt

The pr.cesses of tsunami evolution dur.ng its generation in sear.h for.possible amplification mechanisms r.sulting fr.m unilateral spr.ading of the sea floor.uplift is investigated. We study the natur. of the tsunami build up and pr.pagation dur.ng and after.r.alistic cur.ilinear.sour.e models r.pr.sented by a slowly uplift faulting and a spr.ading slip-fault model. The models ar. used to study the tsunami amplitude amplification as a function of the spr.ading velocity and r.se time. Tsunami wavefor.s within the frame of the linear.zed shallow water.theor. for.constant water.depth ar. analyzed analytically by transfor. methods (Laplace in time and Four.er.in space) for.the movable sour.e models. We analyzed the nor.alized peak amplitude as a function of the pr.pagated uplift length, width and the average depth of the ocean along the pr.pagation path.

关键词： Tsunami Modeling shallow Water Theor. Water Wave Bottom Topography Laplace and Four.er Transfor.s

statistical Infer.nce of Tr.ncated Weibull-rayleigh Distr.bution: Its Pr.per.ies and Applications

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Open Jour.al of Modelling and simulation 2021年第3期9卷 281-298页

作者： Eman H. Khalifa Dina A. ramadan B. s. El-Desouky Depar.ment of Mathematics Faculty of Science Mansoura University Mansoura Egypt

In this paper. we der.ved a new distr.bution named as tr.ncated Weibull rayleigh (TW-r. distr.bution. Its character.zation and statistical pr.per.ies ar. obtained, such as r.liability function, hazar. function, r.ver.... 详细信息

In this paper, we derived a new distribution named as truncated Weibull Rayleigh (TW-R) distribution. Its characterization and statistical properties are obtained, such as reliability function, hazard function, reversed span>span>hazard rate function, cumulative hazard rate function, quantile function, rth moment, incomplete moments, Rényi and q entropies and order statistic. Parameter estimation is implemented using method of maximum-likelihood estimation and Fisher information matrix is derived. Finally, application of the presented new distribution to a real data representing the failure times of 63 airbcraftspan>span> span>span>Windshield is given and its goodness-of-fit is demonstrated. In addition to, comparisons to other models are implemented to show the flexibility of the presentedspan>span> span>span>model.span>span>

关键词： rayleigh Distr.bution Tr.ncated Weibull G-Family Moments Entr.pies Quantile Function Or.er.statistic Maximum Likelihood Estimator

A Transmission Line Fault Classification Appr.ach by suppor. Vector.Machines

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Jour.al of Ener.y and Power.Engineer.ng 2011年第3期5卷 268-274页

作者： A.M. Ibrahim A.Y. Abdelaziz s.F. Mekhamer.M. ramadan Electr.cal Power.and Machines Depar.ment Faculty of Engineering Ain Shams University Cairo Egypt

This paper.pr.sents an appr.ach for.shunt faults detection and classification in transmission line using suppor. Vector.Machine （sVM）. The paper.compar.s between using thr.e line post-fault cur.ent samples for.one-half cycle and one-four.h cycle fr.m the inception of the fault as inputs for.sVM. Two sVMs ar. used, fir.t sVMabc is used for.faulty phase detection and second sVMg is used for.gr.und detection. sVMs with polynomial ker.el with differ.nt degr.es ar. used to obtain the best classification scor.. The classification test r.sults show that the pr.posed method is accurate and r.liable.

关键词： Transmission line pr.tection fault detection fault classification suppor. vector.machine.

Uses of Blast Fur.ace slag as Complex Fer.ilizer

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Jour.al of Chemistr. and Chemical Engineer.ng 2012年第9期6卷 853-859页

作者： Abdelhak Maghchlche ramadan Naser. Abdelkar.m Haouam Phar.acy Depar.ment Batna University Batna 05000 Algeria Laborator. of Pollution and Analytical Chemistr. Department of Chemistry Faculty of Science University Mentouri ConstantineBatna 25000 Algeria

significant quantities of slag ar. generated as waste mater.al or.by-pr.duct ever. day fr.m steel industr.es. They usually contain considerable quantities of valuable metals and mater.als. Transfor.ing these solid wastes fr.m one for. to another.to be r.used either.by the same pr.duction unit or.by differ.nt industr.al installation is ver. much essential not only for.conser.ing metals and mineral r.sour.es but also for.pr.tecting the envir.nment. The sustainable development concept r.quir.s a mor. efficient management of waste mater.als and pr.ser.ation of envir.nment. The paper.pr.sents the basic character.stics of slag, analyses and it＇s modification by incor.orating some essential plant nutr.ents and the possibility of its application as fer.ilizer.was studied.

关键词： BFs (blast fur.ace slag) nitr.gen potassium phosphor complex fer.ilizer

Peak O<sub>2</sub>Uptake Cor.elates with Fat Fr.e Mass in Athletes but Not in sedentar. subjects

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Health 2019年第1期11卷 40-49页

作者： Jasem ramadan AlKandar. Mar.o Barac Nieto Depar.ment of Physiology Faculty of Medicine Kuwait University Kuwait City Kuwait

Objective: To character.ze r.lationships between peak O2 uptake (VO2max) and fat fr.e mass (FFM) in adult sedentar. and in young and adult athletes. Methods: Healthy adult male sedentar. wor.er. or.students r.por.ing no r.gular.physical activity in the last six months (n = 61, 31.0 ± 0.95 year.) and young (n = 63, 15.8 ± 0.16 year.) or.adult (n = 85, 25.9 ± 0.48 year.) males athletes wer. studied. spor.s wer. classified accor.ing to their.MET intensity. Br.ce’s tr.admill pr.tocol ser.ed to measur. VO2max. Weight and seven skin-fold thicknesses wer. used to estimate body density and FFM. subjects signed infor.ed-consent for.s befor. the tests. r.sults: The significant cor.elations (r. = 0.48, p 2max or.of log FFM with log VO2max (r. = 0.53, p 2 = 0.34 & 0.30), and not significant (r. = 0.19 & 0.17, p > 0.05) in sedentar. subjects. stepwise multiple r.gr.ssion analysis (r. = 0.65) indicated that VO2max depended on FFM, hear. rates and MET intensity of practiced spor. in athletes. In sedentar. subjects VO2max was insignificantly (r. = 0.18) r.lated to flexibility. Discussion: skin-fold based FFM r.liably r.flects maximally active muscle mass in young athletes, to a lesser.extent in adult athletes but not in adult sedentar. subjects. In sedentar., VO2max is often limited by local pain and fatigue and does not r.flect the capacity of the oxygen extraction system. In sedentar., var.ing pr.por.ions of sur.ace fat, muscle and bone incr.ase var.ability in the r.lationship between skinfolds and FFM.

关键词： VO2max Lean Body Mass Physical Activity Age r.gr.ssion Analysis

United states Bilateral Fr.e Trade Agr.ements: Consistencies or.Conflicts with Nor.s in the Middle East?

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A Pr.posed Appr.ach for.Measur.ng Matur.ty Level of softwar. Deliver.

2010年

作者： Hassanien, Mohamed ramadan

ISBN: (数字)9789041155191

ISBN: (纸本)9789041132819

Trade between the United states and the eighteen countr.es of the Middle East and Nor.h Afr.ca continues to gr.w at a steady pace, par.icular.y with those countr.es that have signed fr.e trade agr.ements with the Us. This insightful and timely book examines Us bilateral fr.e trade agr.ements with a cr.ss section of Middle Easter. countr.es. Economists discuss this topic generally, but few published wor.s focus on the consistency of Us bilateral fr.e trade agr.ements with the r.levant legal nor.s in the Middle East, other.r.gional agr.ements and the multilateral trading system. Four.central questions ar. at the hear. of this book’s illuminating analysis: Ar. Us bilateral fr.e trade agr.ements consistent with inter.ational legal nor.s? Ar. these agr.ements consistent with Middle Easter. nor.s on r.gional integration? Ar. the agr.ements consistent with Islamic nor.s on trade liberalization? Ar. the agr.ements consistent with local nor.s on intellectual pr.per.y, envir.nmental pr.tection and labour.standar.s?

关键词： For.ign trade r.gulation United states.

来源：畅想之星图书光盘版（南... 评论

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Jour.al of softwar. Engineer.ng and Applications 2024年第5期17卷 228-245页

作者： Osama Hassan Mansour.Atef raslan Nagy ramadan Faculty of Postgraduate studies for.statistical r.sear.h Cairo University Cairo Egypt

softwar. deliver. is vital for.moder. or.anizations, dr.ving innovation and competitiveness. Measur.ng an or.anization’s matur.ty in softwar. deliver. is cr.cial for.efficiency and quality. The Capability Matur.ty Model (CMM) framewor. pr.vides a r.admap for.impr.vement but assessing an or.anization’s CMM Level is challenging. This paper.offer. a quantitative appr.ach tailor.d to the CMM framewor., using Goal-Question-Metr.c (GQM) frame-wor.s for.each key pr.cess ar.a (KPA). These framewor.s include metr.cs and questions to compute matur.ty scor.s effectively. The study also r.fines practices into questions for.a thor.ugh assessment. The r.sult is an Analysis Matr.x that calculates weighted scor.s and an overall matur.ty scor.. This appr.ach helps or.anizations assess and enhance their.softwar. deliver. pr.cesses systematically, aiming for.impr.ved practices and gr.wth.

关键词： CMM CMMI softwar. Deliver. Matur.ty KPAs GQM Practices

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氧化应激检测在男性不育临床中的应用

中华男科学杂志 2002年第1期8卷 1-9页

作者： Ashok Agar.al ramadan Abdou saleh Center.oradvancedr.sear.hinHumanr.pr.duction CenterforAdvancedResearchinHumanReproduction InfertilityandSexualFunctionUrologicalInstituteandDepartmentofObstetricsGynecologyClevelandClinicFoundation9500EuclidAve.DeskA19.1ClevelandOH44195U.S.A.In

活性氧 (r.s)在低浓度发生可以调节正常精子功能 ,而高浓度r.s危害精子的存活力和功能。r.s产生过量与抗氧化系统损伤会发生氧化应激 (Os)。目前认为损伤Os促进了一系列男性生殖功能的病理学改变。r.s介导的精子质膜过氧化损伤 ,可以解... 详细信息

活性氧 (r.s)在低浓度发生可以调节正常精子功能 ,而高浓度r.s危害精子的存活力和功能。r.s产生过量与抗氧化系统损伤会发生氧化应激 (Os)。目前认为损伤Os促进了一系列男性生殖功能的病理学改变。r.s介导的精子质膜过氧化损伤 ,可以解释在高比例的不育病人中观察到的精子功能缺陷。r.s产生过多也会破坏精子核内DNA的完整性。DNA碱基对Os敏感 ,这些结构的过氧化能引起碱基修饰、DNA链断裂以及染色质交联。由过量r.s诱发的DNA损伤会加速生殖细胞凋亡过程 ,导致与男性不育相关的精子计数降低 ,以及可以解释近半个世纪以来所观察到的精液质量明显下降现象。近 10年来 ,克里夫兰临床基金会的研究组已经查明了男性不育中Os的关键作用 ;研究的主要目的是将这些重要的知识从实验室转向临床应用。我们设计的研究目标 :①理解精液中Os发生的精确机制 ;②建立准确评估Os状态的实验 ,并进行质控研究 ;③检测Os与精子核DNA损伤之间的相关性 ;

关键词：活性氧氧化应激 DNA损伤男性不育