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The goal of this study is to provide a cross-lagged examination of the relationships between engaging leadership, job resources and employee work engagement. We propose a mediation model and we postulate that engaging leadership can increase perceptions of three specific job resources (i.e. autonomy, support from colleagues and opportunities for learning and development) which theoretically correspond to the three facets of engaging leadership (i.e., inspiring, connecting and strengthening, respectively). Subsequently, in keeping with the extant body of Job Demands-Resources (JD-R) research, we link job resources to employee work engagement. Our hypotheses were tested on data collected at two time-points – T1 (N = 759) and T2 (N = 273) –from employees working for a hotel chain in the Netherlands. In line with our expectations, engaging leadership showed a significant cross-lagged relationship with autonomy and support from colleagues, but did not predict learning opportunities and work engagement across time. While we formulated specific hypotheses, we also tested reversed causation relationships. We found no direct effect from engaging leadership on employee work engagement, however, the reversed effect was significant; employee perceptions of engaging leadership were shaped by their own engagement experiences. Importantly, engaged employees at T1 reported more job resources at T2. By providing a cross-lagged examination of our model, we showed that engaging leaders as well as employees’ positive affective state of being engaged, are essential to shaping a resourceful work context. A comprehensive view on the triggers and outcomes of work engagement and engaging leadership is needed, as the traditional unidirectional cause-effect rationale fails to explain how these concepts relate to one another and to employee experiences of job resources.  相似文献   
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Summary.  Wavelet shrinkage is an effective nonparametric regression technique, especially when the underlying curve has irregular features such as spikes or discontinuities. The basic idea is simple: take the discrete wavelet transform of data consisting of a signal corrupted by noise; shrink or remove the wavelet coefficients to remove the noise; then invert the discrete wavelet transform to form an estimate of the true underlying curve. Various researchers have proposed increasingly sophisticated methods of doing this by using real-valued wavelets. Complex-valued wavelets exist but are rarely used. We propose two new complex-valued wavelet shrinkage techniques: one based on multiwavelet style shrinkage and the other using Bayesian methods. Extensive simulations show that our methods almost always give significantly more accurate estimates than methods based on real-valued wavelets. Further, our multiwavelet style shrinkage method is both simpler and dramatically faster than its competitors. To understand the excellent performance of this method we present a new risk bound on its hard thresholded coefficients.  相似文献   
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Veneziano, Veneziano and LeGrand (2000) found support for the victim to victimizer hypothesis of sexual aggression with 74 sexually abusive youth. This project, a further step in examining this theory (Burton, 2000, Burton, Miller, & Shill, 2002) builds on their ideas with data from 179 adolescent sexual abusers, and supports their findings. In an examination of relationships, gender, modus operandi, and acts, the sexually abused youth were likely to repeat what was done to them. This project also offers a further analysis of how victimization accounts for a significant portion of the variance in perpetration by these youth. Implications for research and practice are offered.  相似文献   
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In studies of farming, the age of the principal decision-maker (PDM) has been associated with numerous farm structural and managerial features and has been widely accepted as a good indicator of the influence of life-cycle factors on decision-making. As such, it has become an important aspect of many quantitative studies of agricultural change. However, contemporary studies of family farming demonstrate that the concept of a single PDM in family farms is becoming an anachronism as alternative enterprises, pluriactivity and the scale of family farms force more diffuse management/operating systems. This raises questions concerning whether the age of the PDM can still be taken as representative of farm structure, strategy or life-cycle stage? Using a study conducted in the Grampian Mountains region of Scotland in 2003 this note investigates the impact of using an alternative index—compiled by averaging the age of family members working on the farm. It suggests that PDM age is a relatively poor indicator of farm structural and managerial features compared to a family age index and calls for researchers to think about alternative approaches to measuring ‘age’ as an indicator.  相似文献   
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Common sense has to do with problem solving. In the complexities of everyday human life, we are faced time and again with the need to solve problems. In fact, every situation we face, at least at the first exposure, requires some form of problem solving. When we want food, we have to solve a series of problems from acquisition to preparation to serving and eating. When we deal with organizational needs, problem solving is the daily fare.  相似文献   
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La pratique de la sage‐femme opérant dans la communauté a apporté avec elle, lorsque devenu une profession régie et financée par l’état vers la fin du vingtième siècle, les objectifs et aspirations de son mouvement social. Parmi ces objectifs, elles désiraient à faire attention à l’équité et la diversité sociale lors de la provision de soins pendant la naissance. Dans cet article, nous utilisons des interviews avec des sage‐femmes qui pratiquent en ce moment en Ontario, afin de nous concentrer sur les conceptualisations de la diversité des sage‐femmes. Nous explorons leurs efforts, dans le travail quotidien, visant à supporter et fortifier la diversité sociale des clientes et des sage‐femmes elles‐mêmes. Nous proposons que la transition de la pratique de la sage‐femme vers le système de soins santé gouvernemental ne signale pas l'abandon des projets et engagements de changement social. Les réponses à la diversité sociale en soins de santé varie des efforts à améliorer l'accès aux soins de santé jusqu'à l’étude du rôle de la justice sociale en reconnaissant les besoins des populations diverses. L'aspiration de ‘créer un monde meilleur’ continue à animer le travail des sage‐femmes nonobstant la réglementation de leur pratique. Cet article explore le patrimoine de pratique des sage‐femmes en tant que mouvement social et décrit les rapports entre la diversité, la justice sociale et la pratique actuelle des sage‐femmes. As midwifery moved from lay practice to a regulated health‐care profession in Ontario toward the end of the twentieth century, it brought with it many of its social movement goals and aspirations. Among these was the desire to attend to diversity and equity in the provision of birthing care. Drawing on interviews with currently practicing Ontario midwives, this paper focuses on midwives’ conceptualizations of diversity and explores their everyday work to support and strengthen diversity among those using and those providing midwifery care. We argue that midwifery's recent relocation within state structured health care means neither that the social change projects of midwifery are complete nor that midwifery has abandoned its movement‐based commitment to social change. Responses to social diversity in health care range from efforts to simply improve access to care to analyses of the role of social justice in recognizing the needs of diverse populations. The social justice aspiration to “create a better world” continues to animate the work of midwives postregulation. This paper explores the legacy of midwifery as a social movement, addressing the connections between diversity, social justice and midwifery care.  相似文献   
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