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Does a Country/Region's Economic Status Affect Its Universities' Presence in International Rankings?

Journal of Data and Information Science 2019年第2期4卷 56-78页

作者： Esteban Fernandez Tuesta Carlos Garcia-Zorita Rosario Romera Ayllon elias sanz-casado Escola de Artes Ciencias e HumanidadesUniversidade de Sao PauloBrazil Department of Library Science and Documentation Carlos III University of MadridSpain Laboratory of Metric Studies on Information(LEMI) Carlos III University of MadridSpain Research Institute for Higher Education and Science(INAECU) MadridSpain Associated Unit IFS(CSIC)-LEMI(UC3M) Carlos III University of MadridSpain Department of Statistics Carlos III University of MadridSpain

Purpose: Study how economic parameters affect positions in the Academic Ranking of World Universities' top 500 published by the Shanghai Jiao Tong University Graduate School of Education in countries/regions with listed higher education institutions. Design/methodology/approach: The methodology used capitalises on the multi-variate characteristics of the data analysed. The multi-colinearity problem posed is solved by running principal components prior to regression analysis, using both classical(OLS) and robust(Huber and Tukey) methods. Findings: Our results revealed that countries/regions with long ranking traditions are highly competitive. Findings also showed that some countries/regions such as Germany, United Kingdom, Canada, and Italy, had a larger number of universities in the top positions than predicted by the regression model. In contrast, for Japan, a country where social and economic performance is high, the number of ARWU universities projected by the model was much larger than the actual figure. In much the same vein, countries/regions that invest heavily in education, such as Japan and Denmark, had lower than expected *** limitations: Using data from only one ranking is a limitation of this study, but the methodology used could be useful to other global rankings. Practical implications: The results provide good insights for policy makers. They indicate the existence of a relationship between research output and the number of universities per million inhabitants. Countries/regions, which have historically prioritised higher education, exhibited highest values for indicators that compose the rankings methodology; furthermore,minimum increase in welfare indicators could exhibited significant rises in the presence of their universities on the ***/value: This study is well defined and the result answers important questions about characteristics of countries/regions and their higher education system.

关键词： Academic Ranking of World Universities Socio-economic indicators Regression analysis

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中国与西班牙可再生能源领域合作研究的计量分析

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科学观察 2014年第2期9卷 43-52页

作者： elias sanz-casado Antonio Serrano-López Daniela De Filippo María Luisa Lascurain-Snchez 徐晓艺史双青岳婷丁洁兰马建华马德里卡洛斯三世大学图书馆学和文献学系计量信息研究实验室高等教育科学研究所(INAECU)

随着人类对环境问题越来越关注,世界各国有关可再生能源利用的研究也不断升温。该文应用文献计量方法,对Web of Science数据库中2003—2012年中国与西班牙可再生能源领域的论文及其参考文献进行了分析。基于两国合作的论文及其参考文献... 详细信息

随着人类对环境问题越来越关注,世界各国有关可再生能源利用的研究也不断升温。该文应用文献计量方法,对Web of Science数据库中2003—2012年中国与西班牙可再生能源领域的论文及其参考文献进行了分析。基于两国合作的论文及其参考文献,识别出两国合作的热点研究领域,分析了参与这些领域研究的机构。尽管中国和西班牙在该领域的合著论文很少,但仍可以观察到合著论文的数量随时间的变化不断增加。最后,根据可再生能源领域的论文耦合识别出该领域的网络群体(bibliographic communities),对其进行多维度社会网络分析,得出主要的学科领域以及机构和大学列表。

关键词：可再生能源可持续发展文献计量分析中国西班牙科学合作

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On Word Equations Originated from Discrete Dynamical Systems Related to Antisymmetric Cubic Maps with Some Applications

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Acta Mathematica Sinica,English Series 2018年第11期34卷 1663-1676页

作者： elias ABBOUD The Academic Arab Institute Faculty of EducationBeit Berl College

In this article, we solve some word equations originated from discrete dynamical systems related to antisymmetric cubic map. These equations emerge when we work with primitive and greatest words. In particular, we characterize all the cases for which （β1β1） = （β2β） where β1 and β2 are the greatest words in 〈〈β31〉〉 and 〈〈β32〉〉 of M（n）.

关键词： Word equation broken alternating word primitive word greatest word parity-lexicographic order

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Real-time calculation of fragment velocity for cylindrical warheads

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Defence Technology（防务技术） 2019年第3期15卷 264-271页

作者： David Felix Ian Colwill elias Stipidis Institution of Engineering and Technology Stevenage England Member of British Computer Society London Institute of Electrical and Electronics Engineers London

To simulate explosion fragments, it is necessary to predict many variables such as fragment velocity, size distribution and projection angle. For active protection systems these predictions need to be made very quickly, before the weapon hits the target. Fast predictions also need to be made in real time simulations when the impact of many different computer models need to be assessed. The research presented in this paper focuses on creating a fast and accurate estimate of one of these variables - the initial fragment velocity. The Gurney equation was the first equation to calculate initial fragment velocity. This equation, sometimes with modifications, is still used today where finite element analysis or complex mathematical approaches are considered too computationally expensive. This paper enhances and improves Breech’s two-dimensional Gurney equation using available empirical data and the principals of conservation of momentum and energy. The results are computationally quick, providing improved accuracy for estimating initial fragment velocity. This will allow the developed model to be available for real-time simulation and fast computation, with improved accuracy when compared to existing approaches.

关键词： Initial fragment velocity Real-time simulation Cylindrical explosion

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Young blood products:emerging treatment for Alzheimer's disease?

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Neural Regeneration Research 2018年第4期13卷 624-627页

作者： Rita Khoury elias Ghossoub Department of Psychiatry and Behavioral Neuroscience Saint Louis University

Alzheimer＇s disease is the most common neurodegenerative disorder and no disease-modifying treatment is currently *** has shown that while brain neurogenesis continues in adult life,it declines with *** parabiosis,plasma transfusions and direct administration of neural growth factors,animal studies have demonstrated the positive impact of exposure to young blood products on neurogenesis and synaptic plasticity in an aging *** hippocampus and the sub-ventricular zones were identified as the main regions *** findings have prompted researchers to experiment their effects in subjects with an established neurocognitive disorder,such as Alzheimer＇s *** argued that modification of brain vasculature,reactivation of adult neural stem cells,and remodeling of their synaptic activity/plasticity may lead to cognitive enhancement and increased *** pilot human study found that young donor plasma infusion protocols for adults with Alzheimer＇s disease were safe and feasible;however,no statistically significant improvements in cognition were *** is a need to conduct additional placebo-controlled human studies in larger *** studies should focus on identifying an “optimal age” at which an intervention in humans may yield significant cognitive enhancement,as well as determining the types of transfusions with the best efficacy and tolerability profiles.

关键词： young blood rejuvenation cognition Alzheimer's disease plasma transfusion aging neurogenesis

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Selective serotonin reuptake inhibitors and Alzheimer’s disease

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Neural Regeneration Research 2020年第1期15卷 41-46页

作者： Bernadette Mdawar elias Ghossoub Rita Khoury Department of Psychiatry American University of Beirut Medical CenterBeirutLebanon Department of Psychiatry and Behavioral Neuroscience Saint Louis University School of MedicineSt.LouisMOUSA

Given the failure to develop disease-modifying therapies for Alzheimer’s disease(AD),strategies aiming at preventing or delaying the onset of the disease are being *** the debate regarding whether depression is an etiological risk factor or a prodrome of AD rages on,a key determining factor may be the timing of depression onset in older *** is increasing evidence that untreated early-onset depression is a risk factor and that late-onset depression may be a catalyst of cognitive *** from animal studies have shown a beneficial impact of selective serotonin reuptake inhibitors on pathophysiological biomarkers of AD including amyloid burden,tau deposits and *** humans,studies focusing on subjects with a prior history of depression also showed a delay in the onset of AD in those treated with most selective serotonin reuptake ***,which has strong anticholinergic properties,was associated with increased mortality and mixed effects on amyloid and tau deposits in mice,as well as increased odds of developing AD in *** most of the data regarding selective serotonin reuptake inhibitors is promising,findings should be interpreted cautiously because of notable methodological heterogeneity between *** is thus a need to conduct large scale randomized controlled trials with long follow up periods to clarify the dose-effect relationship of specific serotonergic antidepressants on AD prevention.

关键词： Alzheimer’s disease amyloidogenesis animal models antidepressant depression onset delay prevention selective serotonin reuptake inhibitor SSRI

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Intestinal microbiota and its interaction to intestinal health in nursery pigs

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Animal Nutrition 2022年第1期8卷 169-184页

作者： Marcos elias Duarte Sung Woo Kim Department of Animal Science North Carolina State UniversityRaleighNC27695United States

The intestinal microbiota has gained increased attention from researchers within the swine industry due to its role in promoting intestinal maturation,immune system modulation,and consequently the enhancement of the health and growth performance of the *** review aimed to provide updated scientific information on the interaction among intestinal microbiota,dietary components,and intestinal health of *** small intestine is a key site to evaluate the interaction of the microbiota,diet,and host because it is the main site for digestion and absorption of nutrients and plays an important role within the immune *** diet and its associated components such as feed additives are the main factors affecting the microbial composition and is central in stimulating a beneficial population of *** microbiotaehost interaction modulates the immune system,and,concurrently,the immune system helps to modulate the microbiota *** direct interaction between the microbiota and the host is an indication that the mucosa-associated microbiota can be more effective in evaluating its effect on health *** was demonstrated that the mucosa-associated microbiota should be evaluated when analyzing the interaction among diets,microbiota,and *** addition,supplementation of feed additives aimed to promote the intestinal health of pigs should consider their roles in the modulation of mucosa-associated microbiota as biomarkers to predict the response of growth performance to dietary interventions.

关键词： Intestinal health Mucosa-associated microbiota Nursery pig

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Pathogenesis of primary biliary cirrhosis: A unifying model

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World Journal of Gastroenterology 2006年第15期12卷 2320-2327页

作者： elias Kouroumalis George Notas Laboratory of Gastroenterology and Hepatology University of Crete Faculty of MedicineHeraklion 71003Greece

Primary biliary cirrhosis （PBC） is a disease of unknown etiology leading to progressive destruction of small intrahepatic bile ducts and eventually to liver cirrhosis and failure. It is characterised by female predominance and serum auto-antibodies to mitochondrial antigens targeting the E2 components of the 2-oxoacid dehydrogenase complex. Although they are associated with disease pathogenesis, no concrete evidence has been presented so far. Epidemiological data indicate that a geographical clustering of cases and possible environmental factors are implicated in pathogenesis. A number of genetic factors play a role in determining disease susceptibility or progression, although no definitive conclusion has been reached so far. A key factor to immune pathogenesis is considered to be the breakdown of immune tolerance, either through molecular mimicry or through the so called determinant density model. In this review, the available data regarding the pathogenesis of primary biliary cirrhosis are described and discussed. A new unifying hypothesis based on early endothelin overproduction in primary biliary cirrhosis （PBC） is presented and discussed.

关键词： Primary biliary cirrhosis Pathogenesis

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Effect of TiO_2 nanoparticles on hydrogen evolution reaction activity of Ni coatings

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International Journal of Minerals,Metallurgy and Materials 2018年第4期25卷 472-479页

作者： Revanna Kullaiah Liju elias Ampar Chitharanjan Hegde Electrochemistry Research Lab Department of Chemistry National Institute of Technology Karnataka

The electrocatalytic activity of electrodeposited Ni and Ni–TiO2 coatings with regard to the alkaline hydrogen evolution reaction（HER） was investigated. The Ni coatings were electrodeposited from an acid chloride bath at different current densities, and their HER activities were examined in a 1.0-mol·L^-1 KOH medium. The variations in the HER activity of the Ni coatings with changes in surface morphology and composition were examined via the electrochemical dissolution and incorporation of nanoparticles. Electrochemical analysis methods were used to monitor the HER activity of the test electrodes; this activity was confirmed via the quantification of gases that evolved during the analysis. The obtained results demonstrated that the Ni–TiO2 nanocomposite test electrode exhibited maximum activity toward the alkaline HER. The surface appearance, composition, and the phase structure of all developed coatings were analyzed using scanning electron microscopy（SEM）, energy dispersive spectroscopy（EDS）, and X-ray diffraction（XRD）, respectively. The improvement in the electrocatalytic activity of Ni–TiO2 nanocomposite coating toward HER was attributed to the variation in surface morphology and increased number of active sites.

关键词： coatings electrodeposition nanocomposite electrocatalysis

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Vitamin D:A new player in non-alcoholic fatty liver disease?

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World Journal of Gastroenterology 2015年第6期21卷 1718-1727页

作者： Myrto Eliades elias Spyrou Division of Endocrinology Diabetes and Nu-trition University of Maryland School of Medicine Department of Internal Medicine Medstar Washington Hospital Center

Vitamin D through its active form 1a-25-dihydroxyvtamin D[1,25(OH)2D]is a secosteroid hormone that plays a key role in mineral *** years have witnessed a significant scientific interest on vitamin D and expanded its actions to include immune modulation,cell differentiation and proliferation and inflammation *** our understanding of the many functions of vitamin D has grown,the presence of vitamin D deficiency has become one of the most prevalent micronutrient deficiencies ***,non-alcoholic fatty liver disease(NAFLD)has become the most common form of chronic liver disease in western *** and vitamin D deficiency often coexist and epidemiologic evidence has shown that both of these conditions share several cardiometabolic risk *** this article we provide an overview of the epidemiology and pathophysiology linking NAFLD and vitamin D deficiency,as well as the available evidence on the clinical utility of vitamin D supplementation in NAFLD.

关键词： Steatohepatitis Non-alcoholic fatty liver disease

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