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161.
We present a methodology for Bayesian model choice and averaging in Gaussian directed acyclic graphs (dags). The dimension-changing move involves adding or dropping a (directed) edge from the graph. The methodology employs the results in Geiger and Heckerman and searches directly in the space of all dags. Model determination is carried out by implementing a reversible jump Markov Chain Monte Carlo sampler. To achieve this aim we rely on the concept of adjacency matrices, which provides a relatively inexpensive check for acyclicity. The performance of our procedure is illustrated by means of two simulated datasets, as well as one real dataset. 相似文献
162.
163.
Does Religious Diversity in Health Team Composition Affect Efficiency? Evidence from Dubai
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Alessandro Ancarani Ali Ayach Carmela Di Mauro Simone Gitto Paolo Mancuso 《英国管理杂志》2016,27(4):740-759
Team cultural diversity, the degree to which working team members differ in culture‐related factors, may affect healthcare teams’ outcomes. This paper focuses on one particular source of cultural diversity, namely religion, and examines its relation to the production efficiency of hospital wards. Building on the categorization‐elaboration model of organizational diversity, the authors test an empirical model positing that team religious diversity has non‐linear effects on efficiency, and considering the role of moderating variables of the relation diversity–efficiency. Empirically, the authors adopt a two‐step approach, whereby the first step applies data envelopment analysis to estimate efficiency scores for each team, and the second investigates the effect of diversity and of moderating variables. The model is tested on a sample of hospital wards from three large hospitals in Dubai. The results suggest an inverse U‐shaped relation between religious diversity and the wards’ efficiency. Evidence is provided that the relation is moderated by task complexity, task conflict, team leader tenure and diversity in nationality. This study advances research on the management of hospital team diversity by emphasizing the complexity of diversity effects and the importance of contextual factors. 相似文献
164.
Pompili M Lester D Innamorati M De Pisa E Iliceto P Puccinno M Fiori Nastro P Tatarelli R Girardi P 《Work (Reading, Mass.)》2008,31(2):237-243
The aim of this study was to study suicide risk in subjects exposed to mobbing, that is, systematic psychological harassment in the workplace. Such psychological harassment, unique to the workplace, threatens both the emotional well-being and professional ability of its victims. The items of the Minnesota Multiphasic Personality Inventory-2 (MMPI-2) that assess suicide risk were studied in 102 individuals who were exposed to mobbing. The results indicated that individuals exposed to mobbing had clear differences on the MMPI-2 from normative samples. In addition, those who appeared to be at risk for suicide differed in their scores from those not at risk. Implications for psychopathology and suicide preventions are discussed. 相似文献
165.
Paolo Bertrando Claudia Lini 《Australian and New Zealand Journal of Family Therapy》2019,40(2):176-189
Systemic‐dialogical therapy originates from an evolution of Milan systemic therapy, through a reflection on Bakhtinian dialogue and on power and knowledge dynamics in therapeutic sessions. The model considers both emergent patterns in human interaction and the dialogical nature of human exchanges in which emotions play a relevant part. Such theoretical considerations prompted the creation of specific practices, such as emotional micro‐hypothesising, considering heteroglossia in the session, dialogue with the context, finding one's place in the relational network, and fostering relational responsibility in both therapist and clients. The practice of systemic‐dialogical therapy is illustrated by a clinical case study. 相似文献
166.
Paolo Parmeggiani 《Visual Studies》2016,31(3):231-247
In 1903, Underwood & Underwood published Italy through the Stereoscope: Journeys in and about Italian cities, a multimodal set that provided an immersive travel experience by combining the use of a visual device (the stereoscope and stereoviews), localisation tools (the maps), and a written commentary on each view. The paper argues that this ‘medium’, which was introduced as a realistic and immersive visual reproduction of the world, was an innovative forerunner of modern virtual–reality technologies. The visual three-dimensional effect obtained by the stereoviews is just one of the characteristics meant to enhance the ‘virtual’ experience of the viewer. The author analyses the rhetorical means, strictly intertwined with the photographic representations, to reinforce the impression and emotion and to replace the physical experience of a tour with that of an armchair traveller. The framing of the picture, the choice of the points of view, and the style of staging and posing the people reveal an international standard. In spite of their claim of realistic representation, this vision is not ideologically neutral, and the analysis of this set reveals the biases and prejudices towards not only strangers but also the ‘old’ technology of 2D photography. For social and economic reasons, the ancient practice of taking the grand tour faded, but the conspicuous consumption of this medium allowed the middle class to gain cultural capital with a 3D visual tour in order to claim refinement. 相似文献
167.
Online mutual help experiences may represent an opportunity for people with long-term chronic (LTC) conditions and their caregivers. However, there are very few accounts of or research on online practices of mutual support about such issues. On the other hand, the growth of online experiences of mutual aid has been extensive in recent decades. These experiences have been conventionally classified under the notion of ‘online support groups’. However, the notion of group seems to be reductive for the variety of forms, meanings and implications of such experiences. On the basis of these assumptions, our paper aims at: a) describing the main differences between traditional forms of mutual help and online mutual help; b) identifying the emerging forms of online mutual help experience, emphasizing their distinctive features; c) tracing the potential connections between different experiences and people, practitioners and institutions. We identify three main types of online mutual help experience: groups, communities and extemporary practices. We then analyze the value they can have for LTC people, caregivers, practitioners and institutions, emphasizing their heterogeneity. Finally we discuss the overall evolution of the mutual help phenomenon, considering its transition to an online dimension. 相似文献
168.
Forcella L Bonfiglioli R Cutilli P Antonucci A Di Donato A Siciliano E Cortini M Violante FS Boscolo P 《Work (Reading, Mass.)》2012,41(Z1):2966-2970
Psychosocial discomfort may amplify job-related risk factors. The aim of this study is to evaluate job stress in a high fashion clothing company with upper limb biomechanical overload due to repetitive and forceful manual activities. Biomechanical risk was analyzed and in part reduced using the OCRA Check list. A total of 518 workers (433 females and 85 males) were investigated to determine anxiety (by STAI 1 and 2), occupational stress (using the Italian version of the Karasek Job Content Questionnaire) and perception of symptoms. Final biomechanical assessment did not reveal high risk jobs, except for cutting. Although the perception of anxiety and job insecurity was within the normal range, all the workers showed a high level of job strain (correlated with the perception of symptoms) due, probably, to very low decision latitude. It was suggested that job strain may increase the perception of symptoms. Moreover, the result of this study indicates that musculoskeletal overload has to be further analyzed since its low level is not in agreement with the level of discomfort due to the repetitive tasks. 相似文献
169.
The paper uses questions included in the 2010 wave of the Bank of Italy’s Survey on Household Income and Wealth to investigate the role of family transmission of values. It presents three main empirical findings. First, the paper shows that a number of attitudes (generalized and personalized trusting behaviour, risk and time preferences) and outcomes (female labour force participation, fertility, entrepreneurship, productivity) are associated with the values received. Second, it documents that values received from parents are correlated with the values transmitted to descendants. Third, by using respondent moving patterns, the paper highlights that values received are slowly changing even after a discontinuity in the reference environment. Comparisons between first- and second-generation movers suggest that what matters for breaking the family chains are the formative years, when young people somehow strike a balance between the values transmitted by their parents and what they experience in the (possibly different) environment where they grow up. 相似文献
170.
Paolo Ghinetti 《LABOUR》2007,21(2):361-388
Abstract. This paper uses Italian survey data for 1995 to study the differences in satisfaction for six non‐pecuniary job attributes between public and private sector workers. Results indicate that public employees differ from private employees in the way they evaluate satisfaction with job security, consideration by colleagues, and safety and health job features, whereas there are no differences in their assessment of satisfaction with effort levels and interest for the job. In particular, we find that the premium for public employees is quantitatively higher, especially in the case of satisfaction with employment losses. Moreover, there are significant differences in the determinants of satisfaction across sectors. 相似文献