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Mobility Habitus in the Literature From 2020 to 2024

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Journalism and Mass Communication 2024年第2期14卷 53-62页

作者： María del Rosario Molina González Cruz García Lirios Julio E Crespo Isabel Cristina Rincón Rodríguez Jorge Enrique Chaparro Medina Francisco Rubén Sandoval Vázquez Enrique Martínez Muñoz JoséAlfonso Aguilar Fuentes alfredo barrera escobar Universidad de Sonora NavojoaMéxico Universidad de la Salud Ciudad de MexicoMéxico Universidad de Los Lagos OsornoChile Universidad de Santander UDES BucaramangaColombia Universidad de Investigación y Desarrollo UDI BucaramangaColombia Universidad Autónoma del Estado de Morelos CuernavacaMéxico Universidad Autónoma del Estado de Hidalgo PachucaMéxico Universidad Autónoma del Estado de México HuehuetocaMéxico Universidad Fidel Velazquez EdomexMéxico

The objective of the present work is modeling the mobility habitus in the public transport system with low Co2 emission mechanics in the center of *** this sense,a documentary work was carried out with a review of sources indexed to national repositories,using the Delphi technique for the content analysis and the specification of the model.A study was conducted with a selection of 100 students to establish the reliability,linearity,sphericity,adequacy,and validity of an instrument from which a relationship of dependence between income and mobility habitus was *** limits of the search,selection,and processing of information are recognized,and it is recommended to extend the research to international repositories,as well as to employ a more sophisticated technique.

关键词： spatiality habitus capacities model complexity

Ligand effects on the structure and vibrational properties of the thiolated Au18 cluster

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Progress in Natural Science:Materials International 2016年第5期26卷 510-515页

作者： alfredo Tlahuice-Flores CICFIM-Facultad de Ciencias Físico-Matemáticas Universidad Autónoma de Nuevo León

Most of the studies devoted to thiolated gold clusters suppose that their core and Au-S framework do not suffer from distortion independently of the protecting ligands（-SR） and it is assumed as correct to simplify the ligand as SCH3. In this work is delivered a systematic study of the structure and vibrational properties（IR and Raman）of the Au18（SR）14cluster. The pursued goal is to understand the dependency of the displayed vibrational properties of the thiolated Au18cluster with the ligands type. A set of six ligands was considered during calculations of the vibrational properties based on density functional theory（DFT） and in its dispersioncorrected approach（DFT-D）.

关键词： Gold cluster Ligand effects Structure Vibration Au18(SR)14 Density functional theory

Hubbard U through polaronic defect states

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npj Computational Materials 2022年第1期8卷 2504-2511页

作者： Stefano Falletta alfredo Pasquarello Chaire de Simulationàl’Echelle Atomique(CSEA) Ecole Polytechnique Fédérale de Lausanne(EPFL)CH-1015LausanneSwitzerland

Since the preliminary work of Anisimov and co-workers,the Hubbard corrected DFT+U functional has been used for predicting properties of correlated materials by applying on-site effective Coulomb interactions to specific ***,the determination of the Hubbard U parameter has remained under intense discussion despite the multitude of approaches ***,we define a selection criterion based on the use of polaronic defect states for the enforcement of the piecewise linearity of the total energy upon electron occupation.A good agreement with results from piecewise linear hybrid functionals is found for the electronic and structural properties of polarons,including the formation *** values of U determined in this way are found to give a robust description of the polaron energetics upon variation of the considered *** particular,we also address a polaron hopping pathway,finding that the determined value of U leads to accurate energetics without requiring a configurational-dependent *** is emphasized that the selection of U should be based on physical properties directly associated with the orbitals to which U is applied,rather than on more global properties such as band gaps and band *** comparison,we also determine U through a well-established linear-response scheme finding noticeably different values of U and consequently different formation *** origins of these discrepancies are *** case studies,we consider the self-trapped electron in BiVO_(4),the self-trapped hole in MgO,the Li-trapped hole in MgO,and the Al-trapped hole inα-SiO_(2).

关键词： Hubbard polaron piecewise

Planar matrices and arrays of Feynman diagrams:poles for higher k

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Communications in Theoretical Physics 2024年第4期76卷 1-13页

作者： alfredo Guevara Yong Zhang Perimeter Institute for Theoretical Physics WaterlooON N2L 2Y5Canada Department of Physics&Astronomy University of WaterlooWaterlooON N2L 3G1Canada Society of Fellows Harvard UniversityCambridgeMA 02138United States of America CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesNo.19A Yuquan RoadBejing 100049China

Planar arrays of tree diagrams were introduced as a generalization of Feynman diagrams that enable the computation of biadjoint amplitudes m_(n)(^(k))for k>*** this follow-up work,we investigate the poles of m_(n)(^(k))from the perspective of such *** general k,we characterize the underlying polytope as a Flag Complex and propose a computation of the amplitude-based solely on the knowledge of the poles,whose number is drastically less than the number of the full *** an example,we first provide all the poles for the cases(k,n)=(3,7),(3,8),(3,9),(3,10),(4,8)and(4,9)in terms of their planar arrays of degenerate Feynman *** then implement simple compatibility criteria together with an addition operation between arrays and recover the full collections/arrays for such *** the way,we implement hard and soft kinematical limits,which provide a map between the poles in kinematic space and their combinatoric *** use the operation to give a proof of a previously conjectured combinatorial duality for arrays in(k,n)and(n-k,n).We also outline the relation to boundary maps of the hypersimplex Δ_(k,n) and rays in the tropical Grassmannian Tr(k,n).

关键词： Feynman diagrams biadjoint amplitudes poles

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Non invasive fibrosis biomarkers reduce but not substitute the need for liver biopsy

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World Journal of Gastroenterology 2006年第23期12卷 3682-3694页

作者： Giada Sebastiani alfredo Alberti Department of Clinical and Experimental Medicine University of PadovaPadovaItaly

Chronic liver diseases are very common worldwide, particularly those linked to viral hepatitis and to alcoholic and non-alcoholic fatty liver. Their natural history is variable and long-term evolution differs in individual patients. Optimised clinical management of compensated chronic liver diseases requires precise definition of the stage of liver fibrosis, the main determinant of prognosis and of most therapeutic decisions. Liver biopsy is the gold standard for assessment of hepatic fibrosis. However, it is invasive with possible complications, costly and prone to sampling errors. Many non-invasive markers of liver fibrosis have been recently proposed and assessed in the clinical setting as surrogates of liver biopsy. Direct markers are based on biochemical parameters directly linked to fibrogenesis while indirect markers use simple or more sophisticated parameters that correlate with liver fibrosis stages. Non-invasive markers of liver fibrosis have been tested in different forms of chronic liver disease and showed variable diagnostic performance, but accuracy rarely was above 75%-80%. Better results were obtained when markers were combined. On this line, we have recently proposed a set of algorithms that combine sequentially indirect non-invasive markers of liver fibrosis, reaching 90%-95% diagnostic accuracy with significant reduction in the need for liver biopsy. Based on available evidence, it can be anticipated that non-invasive markers of liver fibrosis and their combined use will soon become a most useful tool in the clinical management of many forms of chronic liver disease. However, their implementation is expected to reduce, but not to completely eliminate, the need for liver biopsy.

关键词： Chronic liver diseases Hepatic fibrosis Liverbiopsy Non invasive fibrosis markers

Pork Meat Quality of Preto Alentejano and Commercial Largewhite Landrace Cross

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Journal of Integrative Agriculture 2013年第11期12卷 1961-1971页

作者： alfredo Teixeira Sandra Rodrigues Veterinary and Animal Reserch Centre (CECAV) Agrarian School of Polytechnic Institute of BraganaCampus Sta Apolónia Apt.1172Bragan a 5301-855Portugal Mountain Research Centre(CIMO) Agrarian School of Polytechnic Institute of BraganaCampus Sta Apolónia Apt.1172Bragan a 5301-855Portugal

This work aimed to evaluate the physical-chemical characteristics of pork from a local breed （Portuguese black pork called Preto Alentejano） and a commercial breed. Sixteen animals were used, 4 females and 4 males from each breed. Animals had 80-100 kg of live weight. The longissimus muscle between the 5th thoracic vertebra and the 10th lumbar vertebra was used in the analysis. Samples were analysed for protein, fat, pigments, ashes, dry mater, water-holding capacity, and texture. Results of fat and pigments contents indicate signiifcant （P〈0.05 and P〈0.01） differences for all treatments. For protein, ashes, dry mater, water-holding capacity and texture, no signiifcant differences were found for sex. In the analysis of fatty acids composition, ten were detected, being the main ones C16：0, C18：0, C16：1, C18：1, C18：2. There was a predominance of monounsaturated fatty acids （MUFA）, followed by saturated （SFA） and polyunsaturated （PUFA）. Differences were signiifcant for sex （P〈0.01） and breed （P〈0.01）. Preto Alentejano breed and females presented the higher percentages of SFA （P〈0.01） and MUFA （P〈0.001） fatty acids. Differences between breeds might be due to breed production system and feed differences.

关键词： breed sex pork meat quality

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Experimental modelling of flocculation processes-the case of Paraiba do Sul Estuary

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International Journal of Sediment Research 2014年第3期29卷 378-390页

作者： alfredo TRENTO Susana VINZON Department of Hydraulics National University of LitoralSanta FeArgentina Programa de Engenharia Oceanica(PEnO)/COPPE Federal University of Rio de JaneiroRio de JaneiroBrazil

The aggregation dynamics of fine sediments was analysed through laboratory tests using Couette and disk *** was shown that floc sizes tend to increase as concentrations grow both in fresh and salt water,in agreement with the aggregation theory,and that equilibrium diameters are slightly greater in salt environments for flocs developed either under shear stress or by differential *** transport and the aggregation processes were preliminarily studied in the estuary of the Paraiba do Sul River using a particle tracking model and field *** floc breakup process by shear stress was included in the *** stresses,which were determined by fractal dimensions and differential density,were accounted *** the calibration of the collision efficiency coefficients,the numerical model was able to predict floc sizes comparable with those measured at the Paraiba do Sul estuary,which,in turn,were similar to those obtained during the laboratory experiments in the Couette flocculator.

关键词： Flocs Flocculators Transport proceses Paraiba do Sul

Range-separated hybrid functionals for accurate prediction of band gaps of extended systems

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npj Computational Materials 2023年第1期9卷 1237-1245页

作者： Jing Yang Stefano Falletta alfredo Pasquarello Chaire de Simulationàl’Echelle Atomique(CSEA) Ecole Polytechnique Fédérale de Lausanne(EPFL)Lausanne CH-1015Switzerland

In this work,we systematically evaluate the accuracy in band gap prediction of range-separated hybrid functionals on a large set of semiconducting and insulating materials and carry out comparisons with the performance of their global *** observe that all the range-separated hybrid functionals that correctly describe the long-range dielectric screening significantly improve upon standard hybrid functionals such as PBE0 and *** choice of the short-range Fock exchange fraction and the screening length can further reduce the predicted *** then propose a universal expression for the selection of the inverse screening parameter as a function of the short-range and long-range Fock exchange fractions,which results in a mean absolute error as small as 0.15 eV for band gap prediction.

关键词： separated functionals exchange

Hydrodynamic finite-size scaling of the thermal conductivity in glasses

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npj Computational Materials 2023年第1期9卷 696-706页

作者： alfredo Fiorentino Paolo Pegolo Stefano Baroni SISSA—Scuola Internazionale Superiore di Studi Avanzati 34136 TriesteItaly CNR-IOM—Istituto Officina Materiali SISSA Unit34136 TriesteItaly

In the past few years,the theory of thermal transport in amorphous solids has been substantially extended beyond the Allen-Feldman *** resulting formulation,based on the Green-Kubo linear response or the Wigner-transport equation,bridges this model for glasses with the traditional Boltzmann kinetic approach for *** computational effort required by these methods usually scales as the cube of the number of atoms,thus severely limiting the size range of computationally affordable glass *** hydrodynamic arguments,we show how this issue can be overcome through a simple formula to extrapolate a reliable estimate of the bulk thermal conductivity of glasses from finite models of moderate *** showcase our findings for realistic models of paradigmatic glassy materials.

关键词： glasses conductivity thermal