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CHARACTERIZATION OF EFFICIENT SOLUTIONS FOR MULTI-OBJECTIVE OPTIMIZATION PROBLEMS INVOLVING SEMI-STRONG AND GENERALIZED SEMI-STRONG E-CONVEXITY

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Acta Mathematica Scientia 2008年第1期28卷 7-16页

作者： E.A.youness Tarek Emam Department of Mathematics Faculty of ScienceTanta UniversityTantaEgypt Department of Mathematics Faculty of Education in SuezSuez Canal UniversitySuezEgypt

The authors of this article are interested in characterization of efficient solutions for special classes of problems. These classes consider semi-strong E-convexity of involved functions. Sufficient and necessary con... 详细信息

关键词： Multi-objective optimization problems semi-strong E-convex efficient solutions properly efficient solutions

Review on nanocomposites fabricated by mechanical alloying

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International Journal of Minerals,Metallurgy and Materials 2019年第9期26卷 1047-1058页

作者： Mohammed A. Taha Rasha A. youness M.F. Zawrah Solid State Physics Department National Research CentreEl Buhouth St.Dokki 12622CairoEgypt Spectroscopy Department National Research CentreEl Buhouth St.Dokki 12622CairoEgypt Refractories Ceramics and Building Material DepartmentNational Research CentreEl Buhouth St.Dokki 12622CairoEgypt

Composites are composed of multiphase materials, where each phase has specific properties that differ from those of the other phases which can effect on the whole properties of composite. Nanocomposites are class of materials that contain at least one phase in the nanometric size range and can be produced by any suitable technique for preparing nanomaterials. Composites are an interesting class of materials that have recently been used in numerous applications, including structural, biomedical, electronics, and environmental applications. In composites, reinforcements might be fibers, particulates, or whiskers. Mechanical alloying(MA) is a promising technique for producing nanocomposite materials that are difficult or impossible to prepare via conventional techniques. In this review, we provide an overview of nanocomposites prepared by the MA process. The mechanism of milling and other milling parameters are overviewed, and insights into sintering categories and parameters are also presented.

关键词： nanocomposites mechanical alloying fabrication sintering

Adsorption recovery of Ag(Ⅰ) and Au(Ⅲ) from an electronics industry wastewater on a clay mineral composite

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International Journal of Minerals,Metallurgy and Materials 2019年第6期26卷 673-680页

作者： youness Rakhila Abdellah Elmchaouri Allal Mestari Sophia Korili Meriem Abouri Antonio Gil UniversitéHassan II de Casablanca Facultédes Sciences et TechniquesLaboratoire de Chimie Physique et de Chimie BioorganiqueBP 146Mohammedia 20650Morocco INAMAT-Science Department Los Acebos BuildingPublic University of NavarraCampus of ArrosadiaPamplona E-31006Spain

The aim of this work is to investigate the ability of an adsorbent of a clay mineral composite to remove and recover gold and silver ions from *** composite was prepared by mixing phosphogypsum(PG),obtained from an industrial waste,and a natural clay *** materials were characterized before and after use in adsorption by several *** adsorption experiments were carried out,and the effects of the contact time and the pH and temperature of solution on the removal processes were *** optimum pH for the adsorption was found to be *** adsorption of these metal ions reached equilibrium after 2 h of *** pseudo-first-and the pseudo-second-order kinetic models,as well as the Freundlich and the Langmuir isotherm equations,were considered to describe the adsorption *** maximum adsorbed amount of 85 mg·g^-1 Ag(I)and 108.3 mg·g?1 Au(III)was *** recovery of the adsorbed gold and silver ions from the adsorbent was also *** acids appeared to be the best desorption agents to recover gold and silver *** use of aqua regia gave regeneration rates close to 95.3%and 94.3%for Ag(I)and Au(III),***,the removal of gold and silver ions from an industrial wastewater was tested in batch experiments,and percentage recoveries of 76.5%and 79.9%for Ag(I)and Au(III),respectively,were *** carry out the industrial application of the proposed methodology,an economic viability study is required.

关键词： adsorption clay composite industrial wastewater gold silver

The Effect of Brand Values and Digital Marketing on the Consumer Purchase Decision：A Case of Pinduoduo

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The Effect of Brand Values and Digital Marketing on the Cons...

作者： youness Jord 长安大学

学位级别：硕士

Exploring the HR Marketing Strategy of Intelcia towards Generation Y in Morocco

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Exploring the HR Marketing Strategy of Intelcia towards Gene...

作者： Lotfi youness（罗福）天津工业大学

学位级别：硕士

本文旨在探讨关于Intelcia公司人才营销策略,着重强调了适应新数字环境的重要性。作者旨在通过探索、分析、确定并提出公司营销策略问题的解决方案,为该公司提供指导。该研究采用定性和探索性方法,包括文献研究、调查问卷、专家咨询和... 详细信息

本文旨在探讨关于Intelcia公司人才营销策略,着重强调了适应新数字环境的重要性。作者旨在通过探索、分析、确定并提出公司营销策略问题的解决方案,为该公司提供指导。该研究采用定性和探索性方法,包括文献研究、调查问卷、专家咨询和访谈等。该研究的意义在于引导Intelcia公司走向新的数字营销时代,制定准确的营销策略以促进其发展,并为该国的其他呼叫中心公司的发展打下基础。通过本研究,Intelcia公司可以适应当今数字化快速发展的环境,更好地服务其客户并拓展其业务。为什么要讨论人力资源营销?这种策略可能会如何改变人力资源专业人员的日常工作方式和常规业务?这些都是本文要解决的主要问题。研究表明,人力资源营销是一种包罗万象的方法,而不仅仅是一种广告“噱头”或昙花一现的趋势。多年来,就业部门发生了重大变化,例如:对重要人才供应和需求规律发生逆转;或者将职业本身定义为一种不那么线性的、不再总是得到组织支持的职业。企业开始实施人力资源营销战略,以应对其对于新人才和能力的需求。尽管企业通常从最简单的组成部分开始:与易于识别和接近的现成目标(如候选人)进行沟通,但企业已经开始制定人力资源营销战略,目的是吸引尽可能优秀的人才,以利于超越竞争对手使企业得到持续发展。此外,他们正努力通过利用传统营销策略(市场研究战略定位图、沟通和营销计划)来吸引人力资源并留住现有员工。本文对人力资源功能和Y世代对2.0工具的认知进行了评价与分析。作为实习的一部分,本文在跨国公司INTLCIA摩洛哥公司的人力资源部门进行了研究。我们的研究有三个主要目标:制作一份Y世代特征清单;评估人力资源职能部门对这一代人的感受;以及评估两组人对2.0技术的感受。我们的研究是公司战略的关键组成部分之一,特别是人力资源部门加强内部调查得出的两个核心战略,包括:1.在求职意愿最多的第三产业,联络和通信中心行业在市场上的声誉一般,与文中提及的其他企业相比,这家企业工作环境不是最好,而且职业发展机会最少。2.薪酬是求职者最关心的问题之一,为了吸引潜在员工,目前排名第29位的Intelcia公司需要尽快解决这个问题。我们的研究表明,Y世代有着独特的个性、对企业抱有很高的期望、要求也很高,因此人力资源职能部门应据此对Y世代人才加以有效管理。

关键词：商务外包人力资源管理 Y世代

Advancements,strategies,and prospects of solid oxide electrolysis cells(SOECs):Towards enhanced performance and large-scale sustainable hydrogen production

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Journal of Energy Chemistry 2024年第7期94卷 688-715页

作者： Amina Lahrichi youness El Issmaeli Shankara S.Kalanur Bruno G.Pollet Green Hydrogen Lab(GH2Lab) Hydrogen Research Institute(HRI)Universitédu QuébecàTrois-Rivières(UQTR)3351 boulevard des ForgesTrois-RivièresQuébec G9A 5H7Canada

Solid oxide electrolysis cells(SOECs)represent a crucial stride toward sustainable hydrogen generation,and this review explores their current scientific challenges,significant advancements,and potential for large-scale hydrogen *** SOEC technology,the application of innovative fabrication tech-niques,doping strategies,and advanced materials has enhanced the performance and durability of these systems,although degradation challenges persist,implicating the prime focus for future *** we provide in-depth analysis of the recent developments in SOEC technology,including Oxygen-SOECs,Proton-SOECs,and ***,Hybrid-SOECs,with their mixed ionic conducting electrolytes,demonstrate superior efficiency and the concurrent production of hydrogen and *** with the capacity to harness waste heat,these advancements in SOEC technology present signif-icant promise for pilot-scale applications in *** review also highlights remarkable achieve-ments and potential reductions in capital expenditure for future SOEC systems,while elaborating on the micro and macro aspects of sOECs with an emphasis on ongoing research for optimization and *** concludes with the potential of SOEC technology to meet various industrial energy needs and its significant contribution considering the key research priorities to tackle the global energy demands,ful-fillment,and decarbonization efforts.

关键词： Solid oxide electrolysis cells Proton-SOECs Oxygen-SoECs Hybrid-SOECs Intermediate-high temperature electrolysers Hydrogenproduction

Three-dimensional virtual representation for the whole process of dam-break floods from a geospatial storytelling perspective

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International Journal of Digital Earth 2022年第1期15卷 1637-1656页

作者： Weilian Li Jun Zhu Jan-Henrik Haunert Lin Fu Qing Zhu youness Dehbi Faculty of Geosciences and Environmental Engineering Southwest Jiaotong UniversityChengduPeople's Republic of China Institute of Geodesy and Geoinformation University of BonnBonnGermany

The objective of disaster scenes is to share location-based risk information to a large audience in an effective and intuitive ***,current studies on three-dimensional(3D)representation for dam-break floods have the following limitations:(1)they are lacking a reasonable logic to organize the whole process of dam-break floods,(2)they present information in a way that cannot be easily understood by *** storytelling helps to create exciting experiences and to explain complex relationships of geospatial *** article proposes a three-dimensional virtual representation method for the whole process of dam-break floods from a geospatial storytelling *** creation of a storyline and a storytelling-oriented representation of dam-break floods are discussed in ***,a prototype system based on WebGL is developed to conduct an experiment *** results of the experiment show that the proposed method can effectively support 3D representation of the spatiotemporal process of dam-break ***,the statistical results indicate that the storytelling is useful for assisting participants in understanding the occurrence and development of dam-break floods,and is applicable to the popularization of disaster science for the general public.

关键词： Geospatial storytelling dam-break flood spatiotemporal process virtual representation 3D scene

Consequences of Exits from Political Unions on Dividend Policy: The Case of Ethiopian Split

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Journal of Modern Accounting and Auditing 2020年第9期16卷 395-402页

作者： Mohamad youness The Bucharest University of Economic Studies BucharestRomania

This paper examines the consequences of exits from political unions or the split of countries on dividend policy decision,taking the Ethiopian split as a practical case,considered as a major factor in the increase of political tension with Eritrea especially after the secession,that led to the increase in successive political conflicts and dispute over the past years till *** paper studies the impacts of political conflicts that have been companied with split to this day especially during the period between 2010 and 2019,using a database of six companies from different sectors,from *** results show that the political conflicts such as split have a direct impact on the dividend policy.

关键词： dividend policy political exits Ethiopian split corporate financial policies

Preventive effects of cannabis on neurotoxic and hepatotoxic activities of malathion in rat

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Asian Pacific Journal of Tropical Medicine 2018年第4期11卷 272-279页

作者： Omar M.E.Abdel-Salam Amany A Sleem Eman R youness Fatma A.Morsy Department of Toxicology and Narcotics National Research Centre Department of Pharmacology National Research Centre Department of Medical Biochemistry National Research Centre Department of Pathology National Research Centre

Objective: To investigate the effect of Cannabis sativa extract on the development of neuroand hepato-toxicity caused by malathion injection in rats. Methods: The extract of Cannabis sativa was obtained from the plant resin by chloroform treatment. Δ~9-Tetrahydrocannabinol content of the extract(20%) was quantified using gas chromatography–mass spectrometry. The doses of cannabis extract were expressed as Δ~9-tetrahydrocannabinol content of 10 or 20 mg/kg. Malathion(150 mg/kg) was intraperitoneally administered followed after 30 min by the cannabis extract(10 or 20 mg/kg, subcutaneously). Rats were euthanized 4 h later. Malondialdehyde(MDA), reduced glutathione(GSH), nitric oxide and paraoxonase-1(PON-1) activity were determined in brain and liver. Brain 5-lipoxygenase and butyrylcholinesterase(BChE) activity were measured as well. Histopathological examination of brain and liver tissue was also performed. Results: Compared to controls, malathion resulted in increased oxidative stress in brain and liver. MDA and nitric oxide concentrations were significantly increased(P<0.05) and GSH significantly decreased with respect to control levels(P<0.05). Malathion also significantly inhibited PON-1 and BChE activities but had no effect on brain 5-lipoxygenase. Brain MDA concentrations were not altered by cannabis treatment. Cannabis at 20 mg/kg, however, caused significant increase in nitric oxide and restored the GSH and PON-1 activity. Brain BChE activity significantly decreased by 26.1%(P<0.05) after treatment with 10 mg/kg cannabis. Cannabis showed no effect on brain 5-lipoxygenase. On the other hand, rats treated with cannabis exhibited significantly higher levels of liver MDA, nitric oxide and PON-1 activity compared with the malathion control group. Rats treated with only malathion exhibited spongiform changes, neuronal damage in the cerebral cortex and degeneration of some Purkinje cells in the cerebellum. There were also hepatic vacuolar degeneration and dilated an

关键词： Cannabis sativa Malathion Liver damage Brain damage Oxidative stress Paraoxonase 5-Lipoxygenase