831 research outputs found
Do envy and compassion pave the way to unhappiness? Social preferences and life satisfaction in a Spanish city
Mounting evidence shows that people’s self-reported life satisfaction (LS) is negatively related to income inequality. Under the interpretation that the relationship between macro-level variables and LS reflects individuals’ social preferences, this finding indicates that most people display inequality-averse preferences. We explore the relationship between self-reports on inequality aversion and LS in a citywide representative survey/experiment conducted in Spain. If self-reported well-being can be used to infer people’s social preferences, LS should correlate negatively with both “envy” and “compassion” scores (i.e., how much one suffers from disadvantageous and advantageous inequality, respectively). We find that LS relates negatively to envy but positively to compassion, which would imply that suffering from observing poorer others, paradoxically, increases well-being. Using an incentivized Dictator Game as a measure of generous behavior, we reject the hypothesis that the positive link between compassion and LS is actually driven by generosity. We discuss how these findings could indicate that the way LS is used to assess social preferences in the population should be revised
Resonant x-ray scattering in La1-xSr1+xMn0 4 (x 0.5): Incommensurate-lattice modulation vs. Charge-stripe models
Using resonant x-ray scattering at the Mn K-edge, we have investigated the nature of the charge and lattice modulation in the La1-xSr1+xMnO4 (x=0.5 and 0.6) manganites. Resonant reflections (h±e, h±e, 0) and (h±2e, h±2e, 0) of the tetragonal I4/mmm structure with a modulation vector of 2e=l-x were found in the insulating phases of both manganites but the intensity of these reflections is much weaker for La0.4Sr1.6MnO4. Resonant x-ray scattering data for the two samples are well explained by the presence of two types of sinusoidal modulations of the oxygen displacements, transverse and longitudinal to the tetragonal [110] direction. The amplitude of the oxygen displacements for any of the modulations decreases with the hole doping, in agreement with the change from a commensurate (x=0.5) to an incommensurate (x=0.6) ordered phase. The different polarization and azimuthal behaviour of the two sets of resonant reflections rule out any kind of stripe model composed by Mn3+-like and Mn4+-like charge-ordering. The maximum charge disproportionation among the different Mn atoms in the unit cell is about 0.15 e- and 0.04 e- for the x=0.5 and x=0.6 samples, respectively. These results thus confirm the existence of a charge-density-wave ordering in both the commensurate-phase of the half-doped La0.5Sr1.5MnO4 and the incommensurate-phase of the over-doped La0.4Sr1.6MnO4 manganites
Characterisation of apple cider cultivars by chemometric techniques using data from high-performance liquid chromatography and flow-injection analysis
Analytical techniques (HPLC and flow-injection analysis) for determining sugars, organic acids, polyphenols and pectins in apples, were employed along with chemometrics in the ripening and classification studies of cider apples. The use of principal component analysis allowed the authors to reduce the dimensionality of the data matrix; three new variables were obtained that accounted for 76% of variance. The projection of the apple cultivars in the reduced space allowed us to visualize the data structure on the basis of the degree of ripening and technological characteristics of the cider apple varieties monitored. Linear discriminant analysis computed a canonical variable with a prediction capacity of 93%, using three groups for cancellation in order to validate the method. The use of modelling techniques, such as SIMCA and partial least squares made an adequate grouping of apple cultivars feasible on the basis of their degree of ripening
Influence of the reactants rotational excitation on the H + D2(v = 0, j) reactivity
10 págs.; 10 figs.; 1 tab.; Special Issue: Dynamics of Molecular Collisions XXV: Fifty Years of Chemical Reaction DynamicsWe have analyzed the influence of the rotational excitation on the H + D(v = 0, j) reaction through quantum mechanical (QM) and quasiclassical trajectories (QCT) calculations at a wide range of total energies. The agreement between both types of calculations is excellent. We have found that the rotational excitation largely increases the reactivity at large values of the total energy. Such an increase cannot be attributed to a stereodynamical effect but to the existence of recrossing trajectories that become reactive as the target molecule gets rotationally excited. At low total energies, however, recrossing is not significant and the reactivity evolution is dominated by changes in the collision energy; the reactivity decreases with the collision energy as it shrinks the acceptance cone. When state-to-state results are considered, rotational excitation leads to cold products rovibrational distributions, so that most of the energy is released as recoil energy.The authors acknowledge funding by the
Spanish Ministry of Science and Innovation (grant Consolider
Ingenio 2010 CSD2009-00038). J.A., F.J.A. and P.G.J. acknowledge
also funding by the Spanish Ministry of Economy and
Competitiveness (grant CTQ2012-37404-C02), and V.J.H.
acknowledges additional funding by the Spanish Ministry of
Science and Innovation (FIS2013-48087-C2-1P) and by the
European Research Council (ERC-2013-Syg-610256).Peer Reviewe
Comment on "Identifying Molecular Orientation of Individual C<sub>60</sub> on a Si(111)-(7x7) Surface"
A Comment on the Letter by J. G. Hou, et al., Phys. Rev. Lett. 83, 3001 (1999)
The Impact of an Authentic Sports Leadership Program for Coach
[EN] Purpose: This paper studies the effects of authentic sports leadership training
on coaches’ self-perception of their own authentic leadership, perceived justice,
competence, overall self-efficacy, and collective efficacy. Additionally, players’
perceptions of their coaches with respect to their authentic leadership, perceived
justice, competence, collective efficacy, satisfaction with the coach, and support for
basic psychological needs were analyzed.
Design: Twenty-five football and handball coaches were randomly assigned to two
groups. Fifteen coaches made up the experimental group that carried out the training
leadership program, while 10 coachesmade up the control group, carrying out no training
whatsoever. A total of 248 football and handball players participated in this study; 136
were led by coaches who participated in the training program, and 112 by coaches who
did not participate in the program.
Results: The results of this study indicate that coaches’ self-perception is positively
influenced after having received training in the variables of authentic leadership, perceived
justice, competence, overall self-efficacy, and collective efficacy. Players whose coaches
were part of the program perceive them as being more competent as coaches.
Conclusions: The effects of an authentic sports leadership training program are
effective for coaches and players alike.S
Caracteres geoquímicos y mineralógicos del yacimiento de Sn y Au de Montejo (Salamanca)
[Resumen] El yacimiento situado al S. E. de la Provincia de Salamanca está constituido por una serie de filones de cuarzo brechificado de dirección E-W, subverticales y encajados en materiales pertenecientes al Complejo Esquistograuváquico (Formación Monterrubio, dominando en esta zona esquistos, grauvacas y microconglomerados). Fue explotado durante los años 40 y 50 para Sn y esporádicamente para Au. Se han estudiado al microscopio 80 preparaciones pulidas y transparentes seleccionadas en cuatro sondeos de 250 metros, calicatas y antiguas escombreras, con el fin de caracterizar paragénesis, sucesión de la mineralización y alteraciones hidrotermales relacionadas. También se ha realizado un muestréo en las zonas mineralizadas y con alteración hidrotermal para su estudio geoquímico. Se han analizado: Au, As, Sb, Bi, Cu, Pb, Zn, Sn, Rb, Sr y Ba en 40 muestras. Las relaciones intereleme~ntales más evidentes son: Au-Sn-Bi y Cu-Sb. Por otro lado, se correlacionan los resultados geoquímicos con los diversos tipos de alteraciones hidrotermales.[Abstract] This tin-gold deposit is located in the SE Salamanca province. Mineralization is associated with several quartz-veins and breccias in metamorphic terrains of Precambrian-Cambrian ages (<<Complejo Esquistograuváquico»). Were studied microscopically 80 samples of four drillings (250 m deep) and other surface sampIes. It is presented mineral paragenesis and wall-rocks alterations relationed with mineralization. The geochemical stady include determinations of Au, As, Sb, Bi, Cu, Pb, Zn, Sn, Rb, Sr and Ba. A factor analysis on the geochemical data stablished the fo11owing associations: Au-Sn-Bi and Cu-Sb
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