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AdS/QCD and Applications of Light-front Holography

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Communications in theoretical Physics 2012年第4期57卷 641-664页

作者： Stanley J.Brodsky guy f.de téramond CAO Pu-Guang SLAC National Accelerator Laboratory Stanford University Stanford CA 94309 USA and CPa-Origins Southern Denmark University Odense Denmark Massey University Palmerston North New Zealand Universidad de Costa Rica San Jose Costa Rica

Light-front holography leads to a rigorous connection between hadronic amplitudes in a higher dimensional anti-de Sitter(AdS) space and frame-independent light-front wavefunctions of hadrons in(3 + 1)-dimensional physical space-time,thus providing a compelling physical interpretation of the AdS/Cft correspondence principle and AdS/QCD,a useful framework which describes the correspondence between theories in a modified AdS 5 background and confining field theories in physical *** a first semiclassical approximation,where quantum loops and quark masses are not included,this approach leads to a single-variable light-front Schro¨dinger equation which determines the eigenspectrum and the light-front wavefunctions of hadrons for general spin and orbital angular *** coordinate z in AdS space is uniquely identified with a Lorentz-invariant coordinate ζ which measures the separation of the constituents within a hadron at equal light-front *** internal structure of hadrons is explicitly introduced and the angular momentum of the constituents plays a key *** give an overview of the light-front holographic approach to strongly coupled *** particular,we study the photon-to-meson transition form factors(tffs) fMγ(Q 2) for γ→ M using light-front holographic *** results for the tffs for the η and η ' mesons are also *** novel features of QCD are discussed,including the consequences of confinement for quark and gluon condensates.A method for computing the hadronization of quark and gluon jets at the amplitude level is outlined.

关键词： gauge/gravity correspondence light-front dynamics strongly coupled QCD meson and baryon spectrum meson and nucleon form factors

Application of the Point-descriptor-Precedence representation for micro-scale traffic analysis at a non-signalized t-junction

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Geo-Spatial Information Science 2023年第3期26卷 406-430页

作者： Amna Qayyum Bernard de Baets Laure de Cock frank Witlox guy de tré Nico Van de Weghe department of Geography Ghent UniversityGhentBelgium department of Data Analysis and Mathematical Modelling Ghent UniversityGhentBelgium department of telecommunications and Information Processing Ghent UniversityGhentBelgium

An intersection of two or more roads poses a risk for potential conflicts among *** the reasons triggering such conflicts are not clear,as they might be too subtle for the human *** environment also plays a part in understanding where,when,and why a particular vehicle interaction has occurred in a certain ***,it is of paramount importance to dive deeper into the vehicle interaction at a micro-scale within the embedded geographical environment,particularly at the *** would in turn assist in evaluating the association of vehicle interactions with conflict risks and near-miss ***,detection of such micro traffic interactions could also be used to improvise the complexity of the already established transport ***,traffic at intersections has been explored mainly for flow estimation,capacity and width measurements,and traffic congestion,etc.,whereas the detection of micro-scale traffic interactions at intersections remains relatively *** this paper,we present a novel approach to retrieve and represent micro-scale traffic movement interactions at a non-signalized t-junction by extending a recently introduced qualitative spatiotemporal Point-descriptor-Precedence(PDP)*** study how the PDP representation offers a fine solution to study the interaction of traffic flows at *** permits tracking the micro-movement of vehicles in much finer detail,which is used later to retrieve movement patterns from a motion *** conventional approaches,we start our approach with the actual movements before modeling the static intersection ***,with the aid of illustrative examples,we discuss how the length,width,and speed of the vehicles can be exploited in our approach to detect specific patterns more ***,we address the potential benefits of our approach for traffic safety assessment and how it can be extended to a network of

关键词： Vehicle interaction traffic research pattern identification traffic safety spatiotemporal representation movement pattern

Mother and daughter became father and son： a case report

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Asian Journal of Andrology 2015年第5期17卷 855-856页

作者： tatjana Sajevets Charlotte Verroken Gunter Heylens Elfride de Baere guy t'Sjoen department of Endocrinology Ghent University Hospital Ghent 9000 Belgium department of Sexology and Gender Problems Ghent University HospitalGhent 9000 Belgium Centre for Medical Genetics Ghent University HospitalGhent 9000 Belgium

dear Editor, Gender dysphoria （GD） is defined as a marked incongruence between one＇s experienced and one＇s assigned gender. It is characterized by a strong desire to get rid of one＇s primary and/or secondary sex characteristics and to have the primary and/or secondary sex characteristics of the other gender. Here, we present a case of a mother and daughter who were both diagnosed with GD.

关键词： daughter father diagnosed

Effect of probiotic administration on the intestinal microbiota, current knowledge and potential applications

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World Journal of Gastroenterology 2014年第44期20卷 16518-16528页

作者： Alejandra de Moreno de Le Blanc Jean guy Le Blanc Centro de Referencia para Lactobacilos San Miguel de Tucuman

Although it is now known that the human body is colonized by a wide variety of microbial populations in different parts(such as the mouth, pharynx and respiratory system, the skin, the gastro- and urogenital tracts), many effects of the complex interactions between the human host and microbial symbionts are still not completely understood. the dysbiosis of the gastrointestinal tract microbiota is considered to be one of the most important contributing factors in the development of many gastrointestinal diseases such as inflammatory bowel disease, irritable bowel syndrome and colorectal cancer, as well as systemic diseases like obesity, diabetes, atherosclerosis and non-alcoholic fatty liver disease. fecal microbial transplantations appear to be promising therapies for dysbiosis-associated diseases; however, probiotic microorganisms have been growing in popularity due to increasing numbers of studies proving that certain strains present health promoting properties, among them the beneficial balance of the intestinal microbiota. Inflammatory bowel diseases andobesity are the pathologies in which there are more studies showing this beneficial association using animal models and even in human clinical *** this review,the association of the human gut microbiota and human health will be discussed along with the benefits that probiotics can confer on this symbiotic activity and on the prevention or treatment of associated diseases.

关键词： Probiotics Dysbiosis Gut microbiota Symbiosis treatment

the multi-functional aspect of scanning holographic microscopy: a review(Invited Paper)

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Chinese Optics Letters 2009年第12期7卷 1066-1071页

作者： guy Indebetouw Physics department Virginia Tech Blacksburg

Recent developments in scanning holographic microscopy that offer the prospects of new quantitative tools and imaging modalities in bio, micro, and nano sciences are reviewed. the versatility of the method is emphasized. Scanning holography can operate in an incoherent mode for fluorescence imaging, in a coherent mode for quantitative phase imaging, or in a tomographic mode for axial sectioning and rejection of the out-of-focus haze. Possible applications are illustrated with examples, and future prospects are discussed.

关键词： the multi-functional aspect of scanning holographic microscopy a review

An Approach to Differential Geometry of fractional Order via Modified Riemann-Liouville derivative

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Acta Mathematica Sinica,English Series 2012年第9期28卷 1741-1768页

作者： guy JUMARIE department of Mathematics University of Quebec at Montreal

In order to cope with some difficulties due to the fact that the derivative of a constant is not zero with the commonly accepted Riemann-Liouville definition of fractional derivative, one （Jumarie） has proposed recently an alternative referred to as （local） modified Riemann-Liouville definition, which directly, provides a taylor＇s series of fractional order for non differentiable functions. We examine here in which way this calculus can be used as a framework for a differential geometry of fractional or- der. One will examine successively implicit function, manifold, length of curves, radius of curvature, Christoffel coefficients, velocity, acceleration. One outlines the application of this framework to La- grange optimization in mechanics, and one concludes with some considerations on a possible fractional extension of the pseudo-geodesic of thespecial relativity and of the Lorentz transformation.

关键词： fractional calculus modified Riemann-Liouville derivative fractional taylor's series fractional manifold fractional geodesic fractional mechanics Lorentz transformation

Histologically proven hepatic steatosis associates with lower testosterone levels in men with obesity

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Asian Journal of Andrology 2020年第3期22卷 252-257页

作者： frederique Van de Velde Marlies Bekaert Anne Hoorens Anja Geerts guy t'Sjoen tom fiers Jean-Marc Kaufman Yves Van Nieuwenhove Bruno Lapauw department of Endocrinology Ghent University Hospital9000 GhentBelgium department of Pathology Ghent University Hospital9000 GhentBelgium department of Hepathology Ghent University Hospital9000 GhentBelgium department of Clinical Biology Ghent University Hospital9000 GhentBelgium department of Gastro-Intestinal Surgery Ghent University Hospital9000 GhentBelgium.

Men with obesity often present with low testosterone(t)and sex hormone-binding globulin(SHBG)*** mechanisms for this have been proposed,but as SHBG is secreted by hepatocytes and sex steroids undergo hepatic metabolization,this study investigates whether severity and histological components of nonalcoholic fatty liver disease(NAfLD)are associated with sex steroid levels in obese *** cross-sectional study included 80 obese men(age:46±11 years;body mass index:42.2±5.5 kg m^-2).Serum levels of total t and estradiol(E.)were measured using liquid chromatography coupled with tandem mass spectroscopy(LC/MS-MS)and SHBG and gonadotropins by *** biopsies were evaluated using ***,and fibrosis *** with steatohepatitis had similar median(1st quartile-3rd quartile)total t levels(7.6[5.0-11.0]nmol l^-1 vs 8.2[7.2-10.9]nmol l^-1;P=0.147),lower calculated free t(cft)levels(148.9[122.9-188.8]pmol 1-1 s 199.5[157.3-237.6] pmol l^-1;P=0.006),and higher free E.t ratios(10.0[6.4-13.9]×10^-3 vs 7.1[5.7-10.7]×10^-3;P=0.026)compared to men with only nonalcoholic fatty *** the histological components of *** steatosis was independently associated with total t(r=-0.331.P=0.003)and cft levels(r=-0.255.P=0.025).Obese men *** have even lower cft levels compared to those without,an association mainly driven by grade of *** this reflects a subgroup of men with a more severe obesity-related phenotype or results from direct relations between hepatic steatosis and sex steroid metabolism needs further investigation.

关键词： male hypog on adism non alcoholic fatty liver disease obesity sex steroids steatosis testoster one

Vacuolar protein sorting protein 41(VPS41) at an intersection of endosomal traffic in neurodegenerative disease

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Neural Regeneration Research 2019年第7期14卷 1210-1212页

作者： Edward f.Griffin Kim A.Caldwell guy A.Caldwell department of Biological Sciences The University of Alabama departments of Neurology and Neurobiology University of Alabama at Birmingham School of Medicine Center for Neurodegeneration and Experimental therapeutics University of Alabama at Birmingham School of Medicine Nathan Shock Center of Excellence for Basic Research in the Biology of Aging University of Alabama at Birmingham

Alzheimer’s and Parkinson’s diseases are neurodegenerative disorders pathologically classified by the accumulation of amyloidogenic proteins into insoluble inclusions within the ***,amyloid plaques in the brains of Alzheimer’s disease patients are comprised of amyloid-β(Aβ)peptide,the product of sequential cleavage of the amyloid precursor protein byβ-andγ-***,α-synuclein is a major component of Lewy bodies associated with Parkinson’s disease.

关键词： commissural axon guidance pathologically

Weighted Bergman kernels and virtual Bergman kernels

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Science China Mathematics 2005年第z1期48卷 225-237页

作者： guy Roos Nevski Prospekt 113/4-53 191024 St Petersburg Russian Federation

We introduce the notion of virtual Bergman kernel and study some of its applications.

关键词： Bergman kernel, weighted Bergman kernel, virtual Bergman kernel.