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Is Being Funny a Useful Policy?How Local Governments' Humorous Crisis Response Strategies and Crisis Responsibilities Influence Trust,Emotions,and Behavioral Intentions

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International Journal of Disaster Risk Science 2022年第5期13卷 676-690页

作者： Janna Hämpke Stefan Röseler meinald T.Thielsch Department of Psychology University of Münster48149 MünsterGermany

This study is the first to investigate how a local government’s humorously framed response strategy on social media to a low-severity crisis influences people ’s trust in the local government and their crisis-related behavioral intentions,specific ally when considering the government’s responsibility for the *** on the situational crisis communication theory,we examined the mediating role of experienced positive or negative affect on people’ s responses to a local government’s crisis communication ***,we exploratorily examined the predictive power and moderating role of demographics,sense of humor,disposition to trust,and the respective crisis scenarios.A total of517 people participated in an online experiment in which they were confronted with three randomly presented fictive crisis scenarios where the local government’s crisis responsibility(high versus low) and the framing of their crisis response strategy(in form of humorous versus rational Twitter posts) were systematically varied between ***,the results mostly corroborate earlier findings about the degree of crisis responsibility(that is,when a government’s crisis responsibility is high,people have less trust and behavioral intentions) and about the mediating role of experienced ***,we found that humorously framed strategies negatively influence trust and positive affect(but not behavioral intentions).In contrast to earlier findings,the crisis responsibility × framing interaction was not ***,the results advise against using humor in crisis communications on social media,even in lowseverity *** analyses indicate that further investigations should focus on specific crisis characteristics and potential moderators.

关键词： Afect Crisis communication Crisis responsibility Humor Situational crisis communication theory Social media

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Angular Distribution for ^(7)Be(d,n) ^(8)B Reaction at E_(c.m).=8.3meV and the Astrophysical S_(l7)(0)Factor for ^(7)Be(p,γ) ^(8)B Reaction

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Chinese Physics Letters 1999年第12期16卷 873-875页

作者： WANG You-bao LIU Wei-ping BAI Xi-xiang LI Zhi-chang LI An-li ZHOU Shu-hua ZHU Xiao-feng LI Xiao-mei HE Gao-kui GUO Gang LIAN Gang TANG Xiao-dong China Institute of Atomic Energy Beijing 1024131Cyclotron InstituteTexas A&M UniversityUSA

The differential cross section for 7Be(d,n)8B reaction at E_(c.m).=8.3 meV has been measured by using a 7Be radioactive *** reaction cross section was determined to be 28±*** astrophysical Sl7(0)factor for the 7Be(p,γ)8B reaction was derived to be 24±5 eV b through the asymptotic normalization constant of)8B extracted from the experimental *** result is found to be consistent with a previous value obtained from the same reaction at Ec.m.=5.8 meV,implying the energy independence of this indirect method within the uncertainty.

关键词： beam independence asymptotic

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Hydrogeochemical processes and multivariate analysis for groundwater quality in the arid maadher region of Hodna,northern Algeria

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Acta Geochimica 2022年第5期41卷 893-909页

作者： Tahar Selmane mostefa Dougha mahmoud Hasbaia Ahmed Ferhati Ali Redjem VESDD Laboratory University of M’sila28000 M’silaAlgeria

This study focused on water quality and hydrogeochemical processes(evolution,origin)in the maadher region,central Hodna in *** recent decades,the excessive exploitation of this resource due to urbanization,irrigation,and the effect of climate change reaching the countries of northern Africa have caused a decline in water levels and hydrochemical changes in the *** sampling campaign in 2019 based on 13 physicochemical parameters was carried out on the water from 32 boreholes in the study area,compared to data archives of both sampling campaigns in 1967 and *** result revealed that the groundwater as a whole has moderate freshwater quality,due to its total dissolved solids(TDS)content and other dissolved ions of concern(nitrate NO),which exceed WHO *** addition,Piper diagram indicates that the hydrochemical facies of sulfate–chloride–nitrate–calcium(SO–Cl–NO–Catype),which globally characterizes the study area and these elements are the dominant dissolved *** component analysis and hierarchical cluster analysis(HCA)methodologies are applied in order to define the major control factors that affect the hydrochemistry of maadher *** distinct water groups were found,illustrating a different evolution of salinity(EC and TDS).The HCA indicated an interesting cluster with a distinct contamination signature and most likely with significantly higher sulfate,chloride,and nitrate *** processes also play an important role in the study *** water resource comes from Bousaada Wadi,the exchange at the aquifer depth and the agricultural practices contribute to the deterioration of the quality.

关键词： Groundwater quality Hydrogeochemical processes multivariate analysis Salinity mio-Plio-Quaternary aquifer

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A Numerical Study Comparing the Effect on Residual Stresses of Two Different Types of Projectiles During Shot Peening

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Computers, materials & Continua 2016年第3期51卷 203-215页

作者： J.Solórzano-López F.A.García-Pastor Angélica Flores-Luna UNAm Facultad de QuímicaCiudad de MéxicoMéxico Cinvestav Unidad Saltillo CoahuilaMéxico TecNm Instituto Tecnológico de Tláhuac IIICiudad de MéxicoMéxico

Shot peening is a widely used technique to improve fatigue life in metallic *** processing technique introduces a subsurface compressive residual stress field through a plastic deformation of the surface caused by the impact of a large number of high-speed *** are a number of parameters that affect the residual stress field depth and *** effects of the impact angle,shot speed and shot geometry are currently being *** particular,substituting spherical cast shots by cylindrical cut wire shots is an attractive option,especially in terms of *** effect of shot geometry on residual stresses,however,needs to be further *** industrial-scale experimentation is costly and cumbersome,mathematical modeling offers a convenient alternative to carry out this type of *** present work shows a comparison between the residual stresses generated by the impact of spherical and cylindrical projectiles on a steel *** threedimensional model was developed using ABAQUS finite element commercial software(Release 6.12,Dassault Systémes,France).The results show that cylindrical shots generate residual stress fields t hat a re higher in magnitude than t hose generated by a spherical ***,the residual stress field of cylindrical shots impacting the surface at an oblique angle shows an important degree of *** effect is not found when spherical shots impact the surface at the same oblique angle.

关键词： Shot Peening Finite element method Residual Stresses

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A New Phasor Estimator for PmU Applications:P Class and m Class

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Journal of modern Power Systems and Clean Energy 2020年第1期8卷 55-66页

作者： Jose R.Razo-Hernandez Arturo mejia-Barron David Granados-Lieberman martin Valtierra-Rodriguez Jose F.Gomez-Aguilar ENAP-Research Group Facultad de IngenieríaUniversidad Autónoma de Querétaro(UAQ)San CayetanoC.P.76807México ENAP-Research Group Departamento de Ingeniería ElectromecánicaInstituto Tecnológico Superior de Irapuato(ITESI)Colonia El CopalC.P.36821México CONACyT-Centro Nacional de Investigación y Desarrollo Tecnológico(CENIDET) Tecnológico Nacional de MéxicoInterior Internado Palmira S/NCol.PalmiraC.P.62490México

Phasor measurement units(PmUs)are fundamental tools in the applications of modern power systems,where synchronized phasor estimations are *** accuracy and dynamic performance requirements for phasor,frequency,and rate of change of frequency(ROCOF)estimations are established in the IEEE Std.C37.118.1-2011 along with the IEEE Std.C37.118.1 a-2014,where two PmU performances are suggested:P class filters for applications requiring fast response and m class filters for applications requiring high rejection to aliased *** this paper,a methodology to design new phasor estimators that satisfy the P class and m class requirements in PmUs is *** proposed methodology is based on finite impulse response filters,brick-wall filters,and complex filter design concepts,where frequency range,time performance,harmonic rejection and out-of-band interference requirements are considered in its design.A comparative analysis using the reference model given by the IEEE Std.C37.118.1 is *** results show the effectiveness of the phasor estimators under steady-state and dynamic conditions according to the PmU standard,making them suitable tools for applications in power systems.

关键词： Brick-wall filter complex filter IEEE Std.C37.118.1 m class P class phasor measurement unit(PmU) phasor estimator

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Rotating instability in the vaneless diffuser of a radial flow pump

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Journal of Thermal Science 2008年第4期17卷 368-374页

作者： A.Dazin O.Coutier-Delgosha P.Dupont S.Coudert G.Caignaert G.Bois Laboratoire de mécanique de Lille(UmR CNRS 8107) Arts et Métiers ParisTech Laboratoire de mécanique de Lille Ecole Centrale de Lille Laboratoire de mécanique de Lille CNRS

The paper refers to the behavior of a vaneless diffuser of a radial flow pump in partial flow operating conditions. Some experimental data have been obtained using 2D/2C PIV and unsteady pressure measurements within the diffuser, in various operating conditions. The experimental results at the lower flow rate are compared with two-dimensional numerical calculations.

关键词： Vaneless diffuser Radial flow pump Instability Particle Image Velocimetry Pressure measurements 2D calculations.

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Tolerance of Chrysantemum maximum to heavy metals:The potential for its use in the revegetation of tailings heaps

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Journal of Environmental Sciences 2013年第2期25卷 367-375页

作者： ma.del Carmen A.Gonzlez-Chvez Rogelio Carrillo-Gonzlez Colegio de Postgraduados Programa de EdafologíaCarr.Mxico-Texcocokm 36.5MontecilloTexcoco estado de Mxico 56230Mxico

To find if ornamental plants are applicable to the remediation of metal-polluted areas, the tolerance of chrysanthemum plants （Chysanthemum maximum） var. Shasta to different metals under hydroponic conditions was studied. Their responses as influenced by the mycorrhizal fungus Glomus mosseae （Nicol. ＆ Gerd.） Gerdemann ＆ Trappe BEG25 on substrates containing mine residues were also investigated. Our results showed that chrysanthemum is a metal-tolerant plant under hydroponic conditions, plants behaving as Pb-excluders, whereas Cd, Cu and Ni were accumulated in roots. Low accumulation in flowers was observed for Cd and Cu but it was concentration-dependent. Ni and Pb were not translocated to flowers. Shoot biomass was not significantly affected by the different rates of mine residue addition for both mycorrhizal and non-mycorrhizal plants. mycorrhizal plants accumulated less Pb and Cu in both shoots and roots than non-mycorrhizal plants. Chysanthemum could be a prospective plant for revegetation of tailings and the use of inoculation may decrease plant metal accumulation in polluted soils.

关键词： mine residues ornamental plants phytostabilization urban remediation

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Effect of the initial ECAP passes on crystal texture and residual stresses of 5083 aluminum alloy

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International Journal of minerals,metallurgy and materials 2020年第6期27卷 801-808页

作者： L.Romero-Reséndiz A.Flores-Rivera I.A.Figueroa C.Braham C.Reyes-Ruiz I.Alfonso G.González Instituto de Investigaciones en materiales Universidad Nacional Autónoma de MéxicoCd.de México 04510México Procédés et Ingénierie en mécanique et matériaux Arts et MétiersParis 75013France Departamento de Diseño y manufactura Facultad de IngenieríaUniversidad Nacional Autónoma de MéxicoPIIT Apodaca 66629México Instituto de Investigaciones en materiales Unidad MoreliaUniversidad Nacional Autónoma de MéxicoMorelia 58190México

To produce a highly refined microstructure,several metals or alloys have been processed via equal-channel angular pressing(ECAP).In this work,the mechanical and microstructural changes of the 5083 aluminum alloy in H11 condition after processed by two ECAP passes were *** ECAP H13 steel die with an inner angle(α)of 120°and outer curvature(β)of 20°was *** microstructural changes were associated with the loss of texture *** morphologies of the mg2Si andα-Al(mn,Fe)Si precipitates for the sample at the initial condition were similar to those subjected to two ECAP *** peak broadening measured by X-ray diffraction revealed an increment of both grain refinement and *** the second extrusion pass,the hardness increased by 62%compared with the initial ***,the heterogeneous hardness behavior was compatible with a highly localized dislocation *** two ECAP passes,shear parallel bands were observed to be at nearly 45°to the extrusion *** evaluation of first-order residual stress as a function of the depth of the analyzed sample displayed compressive or tensile values,depending on the measured *** the plastic deformation applied,the first and second-order residual stresses exhibited significant ***-Hall plots showed positive slopes,indicating an increment in the microstrain.

关键词： aluminum alloy equal-channel angular pressing texture microstructure residual stress

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Vibrational frequency analysis of finite elastic tube filled with compressible viscous fluid

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Acta mechanica Solida Sinica 2017年第4期30卷 435-444页

作者： Ilyess mnassri Adil El Baroudi Arts et métiers ParisTech

The vibrational frequency analysis of finite elastic tube filled with compressible viscous fluid has received plenty of attention in recent years. To apply frequency analysis to defect detection for example, it is necessary to investigate the vibrational behavior under appropriate boundary conditions. In this paper, we present a detailed theoretical study of the three dimensional modal analysis of compressible fluid within an elastic cylinder. The dispersion equations of flexura], torsional and longitudinal modes are derived by elastodynamic theory and the unsteady Stokes equation. The symbolic software mathematica is used in order to find the coupled vibration frequencies. The dispersion equation is deduced and analytically solved. The finite element results are compared with the present method for validation and an acceptable match between them are obtained.

关键词： Frequency analysis Compressible Stokes flow Coupled vibration Elastodynamic

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Hypothalamic circuits and aging:keeping the circadian clock updated

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Neural Regeneration Research 2024年第9期19卷 1919-1928页

作者： Rosa Vázquez-Lizarraga Lucia mendoza-Viveros Carolina Cid-Castro Sareni Ruiz-montoya Erick Carreño-Vázquez Ricardo Orozco-Solis Instituto Nacional de medicina Genómica(INmEGEN) México CityMéxico Centro de Investigacíon sobre el Envejecimiento Centro de Investigacíon y de Estudios Avanzados(CIE-CINVESTAV)México CityMéxico Instituto de Investigaciones Biomédicas Universidad Nacional Autónoma de México UNAMMéxico CityMéxico

Over the past century,age-related diseases,such as cancer,type-2 diabetes,obesity,and mental illness,have shown a significant increase,negatively impacting overall quality of *** on aged animal models have unveiled a progressive discoordination at multiple regulatory levels,including transcriptional,translational,and post-translational processes,resulting from cellular stress and circadian *** circadian clock emerges as a key regulator,sustaining physiological homeostasis and promoting healthy aging through timely molecular coordination of pivotal cellular processes,such as stem-cell function,cellular stress responses,and inter-tissue communication,which become disrupted during *** the crucial role of hypothalamic circuits in regulating organismal physiology,metabolic control,sleep homeostasis,and circadian rhythms,and their dependence on these processes,strategies aimed at enhancing hypothalamic and circadian function,including pharmacological and non-pharmacological approaches,offer systemic benefits for healthy *** brain-directed drug administration represents a promising avenue for effectively targeting specific brain regions,like the hypothalamus,while reducing side effects associated with systemic drug delivery,thereby presenting new therapeutic possibilities for diverse age-related conditions.

关键词： aging astrocytes cellular stress responses circadian clock hypothalamus intranasal drug administration metabolic control nutrient sensor SIRT1 sleep homeostasis

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