64 research outputs found

    Soliton pair dynamics in patterned ferromagnetic ellipses

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    Confinement alters the energy landscape of nanoscale magnets, leading to the appearance of unusual magnetic states, such as vortices, for example. Many basic questions concerning dynamical and interaction effects remain unanswered, and nanomagnets are convenient model systems for studying these fundamental physical phenomena. A single vortex in restricted geometry, also known as a non-localized soliton, possesses a characteristic translational excitation mode that corresponds to spiral-like motion of the vortex core around its equilibrium position. Here, we investigate, by a microwave reflection technique, the dynamics of magnetic soliton pairs confined in lithographically defined, ferromagnetic Permalloy ellipses. Through a comparison with micromagnetic simulations, the observed strong resonances in the subgigahertz frequency range can be assigned to the translational modes of vortex pairs with parallel or antiparallel core polarizations. Vortex polarizations play a negligible role in the static interaction between two vortices, but their effect dominates the dynamics.Comment: supplemental movies on http://www.nature.com/nphys/journal/v1/n3/suppinfo/nphys173_S1.htm

    Happiness matters : exploring the linkages between personality, personal happiness, and work-related psychological health among priests and sisters in Italy

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    This study responds to the challenge posed by Rossetti’s work to explore the antecedents and consequences of individual differences in happiness among priests and religious sisters. The Oxford Happiness Questionnaire was completed together with measures of personality and work-related psychological health by 95 priests and 61 religious sisters. Overall the data demonstrated high levels of personal happiness among priests and religious sisters, but also significant signs of vulnerability. Personality provided significant prediction of individual differences in both personal happiness and work-related psychological health. However, personal happiness provided additional protection against work-related emotional exhaustion and additional enhancement of work-related satisfaction. These findings suggest that acknowledging and affirming personal happiness may enhance the work-related psychological health of Catholic priests and religious sisters

    Managing Relationship Decay Network, Gender, and Contextual Effects

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    Relationships are central to human life strategies and have crucial fitness consequences. Yet, at the same time, they incur significant maintenance costs that are rarely considered in either social psychological or evolutionary studies. Although many social psychological studies have explored their dynamics, these studies have typically focused on a small number of emotionally intense ties, whereas social networks in fact consist of a large number of ties that serve a variety of different functions. In this study, we examined how entire active personal networks changed over 18 months across a major life transition. Family relationships and friendships differed strikingly in this respect. The decline in friendship quality was mitigated by increased effort invested in the relationship, but with a striking gender difference: relationship decline was prevented most by increased contact frequency (talking together) for females but by doing more activities together in the case of males

    Worthy to Lose Some Money for Better Air Quality: Applications of Bayesian Networks on the Causal Effect of Income and Air Pollution on Life Satisfaction in Switzerland

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    One important determinant of well-being is the environmental quality. Many countries apply environmental regulations, reforms and policies for its improvement. However, the question is how the people value the environment, including the air quality. This study examines the association between air pollution and life satisfaction using the Swiss Household Panel survey over the years 2000–2013. We follow a Bayesian network (BN) strategy to estimate the causal effect of the income and air pollution on life satisfaction. We look at five main air pollutants: the ground-level ozone (O3), sulphur dioxide (SO2), nitrogen dioxide (NO2), carbon monoxide (CO) and particulate matter of 10 micrometres (PM10). Then, we calculate the individuals’ marginal willingness to pay (MWTP) of reducing air pollution that aims to improve their life satisfaction. Beside the BN model, we take advantage of the panel structure of our data and we follow two approaches as robustness check. This includes the adapted probit fixed effects and the generalised methods of moments system. Our findings show that O3 and PM10 present the highest MWTP values ranging between 8000and8000 and 12,000, followed by the remained air pollutants with MWTP extending between 2000and2000 and 6500. Applying the BNs, we find that the causal effect of income on life satisfaction is substantially increased. We also show the causal effects of air pollutants remain almost the same, leading to lower values of willingness to pay

    The socio-emotional basis of human interaction and communication: How we construct our social world

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    This publication is with permission of the rights owner freely accessible due to an alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.A review of dimensional research about (the perception of) feelings, non-verbal and verbal communication, behavior and personality reveals in each domain three very similar dimensions. They originated from diverse research areas, often received different names and are conceptually not identical. Yet, the first dimension seems to share in all five areas a general positive versus negative evaluation (e.g. happiness–disgust or friendliness–hostility), the second a strong versus weak characterization (e.g. anger–fear or dominance–submission) and the third dimension an active versus passive impression (e.g. ecstasy–boredom or high–low arousability). These three dimensions are likely to function as fundamental dimensions of interaction and communication as perceived and enacted by humans of all (investigated) cultures. They are interpreted as a universal socio-emotional space that corresponds to an evolutionary need for coordination between individuals. They are implied in the logic of game, exchange or interdependence theory, and manifest themselves in the cultural meanings predicted by affect control theory. The presented overview and reconstruction combines the largely fragmented views of several diverse research domains into a perspective that fosters interdisciplinary understanding and integrative theory-building about human sociality within and between the social sciences with extensions into the natural sciences and humanities.Un passage en revue de la recherche dimensionnelle sur les sentiments (et leur perception), la communication verbale et non-verbale, le comportement et la personnalité, met en évidence trois dimensions très similaires pour chacun de ces domaines. Elles proviennent de différents domaines de recherche, ont souvent reçu des dénominations différentes et ne sont pas identiques conceptuellement. Cependant, la première dimension semble partager dans ces cinq domaines une évaluation positive versus négative (e.g., joie–dégoût ou amitié–hostilité), la deuxième une caractérisation fort versus faible (e.g. colère–peur ou dominance–soumission) et la troisième une impression actif versus passif (e.g. extase–ennui ou stimulation haute–basse). Ces trois dimensions fonctionnent vraisemblablement comme des dimensions fondamentales d’interaction et de communication perçues et émises par les humains de toutes les cultures (étudiées). Elles sont interprétées comme un espace socio-émotionnel universel qui correspond à un besoin au cours de l’évolution de coordination entre les individus. Elles sont impliquées dans la logique du jeu, de l’échange et la théorie de l’interdépendance, et se manifestent dans les significations culturelles prédites par la théorie du contrôle des affects. La présente étude combine les visions largement fragmentées de nombreux et divers domaines de recherche en une perspective qui veut promouvoir une compréhension interdisciplinaire et construire une théorie intégrative sur la socialité humaine dans et entre les sciences sociales avec des ramifications vers les sciences naturelles et les humanités.Peer Reviewe
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