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Street trees are an important part of urban vegetation due to their provisioning of different types of ecosystem services such as local climate regulation and contribution to aesthetical and recreational values. In order to provide these services, urban trees need to endure many stress factors not present in natural environments, such as the widespread use of impervious surfaces in the vicinity of street trees. However, few studies have evaluated the effect of this potential stress factor on urban tree growth. The aim of this study was therefore to investigate how ground surface permeability affects stem and current-year shoot growth of linden (Tilia europaea) street trees in Gothenburg, Sweden. We found that a small fraction of permeable ground surface in the vertically projected tree crown area caused lower stem growth and strongly suppressed current-year shoot growth. This finding can guide future city planning, demonstrating that the vitality of street trees is compromised when the permeable surface area in the vicinity of the tree is small.  相似文献   
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Despite inclusive rhetoric, disabled peoples’ participation in the Health and Human Service (HHS) professions remains limited. This study explores the perspectives of individuals in the HHS sector regarding inclusion-related barriers and facilitators. We found three mechanisms that marginalize disabled people in HHS education and professions: dominant disabling discourses; discriminatory design within programmes and universities; and oppressive interactions. The inclusion of disabled individuals is vital for ensuring HHS professionals represent the populations they serve. By challenging the views of educators, professionals, and scholars, these findings may become part of the foundation upon which change can be created.  相似文献   
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Cambodia is strewn with places of national, local or, most frequently, village importance, considered as potent places, that is to say, places that are said to have agency and a positive or negative power of interaction with human beings. This paper emphasises the constituent principles of potency using case studies based on ethnographic research conducted between 2007 and 2015 in Pursat province, western Cambodia. Beginning with the analysis of the sanctuary of a powerful land guardian spirit called Khleang Muang, the author progressively guides the reader to all the potent places that form a network which spatially tells the legend of the sixteenth-century Khmer King Ang Chan who passed by Pursat, coming from Angkor and settled in Lovek (south of Tonle Sap Lake). Violent death and sacrifices, rituals, spiritual energy called paramī, old buildings, monasteries, precious tableware kept in the soil, trees, stones, termite mounds?…?all those constituents of the potency of the places are analysed. The author’s discussion of the core of potency (pāramī and paramī) enables her to show how Buddhism and land guardian spirit cults are entangled in a single still hierarchical religious system. Finally, the author analyses how potent places in Cambodia embody a process of localisation of the nation-level institution of monarchy.  相似文献   
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This article reports findings from a 13‐month ethnographic study of knowledge use and expertise among 78 workers in a U.S. residential treatment center for children. It investigates the question of how youth care workers developed expertise in an organization that did not require graduate professional education and provided little didactic training. It demonstrates how processes of informal apprenticeship allowed some workers to develop locally recognized expertise through working alongside more experienced peers. It analyzes the puzzling initial finding that workers simultaneously attributed expertise to innate “common sense” and reported that they developed this form of expertise through informal on‐the‐job apprenticeship. Taking a cultural perspective on learning, this article conceptualizes youth‐serving organizations as communities of practice in which informal apprenticeship contributes to the development of locally valued forms of expertise and addresses the question of why youth care workers appeared to differ in their ability to make use of opportunities for such learning. It explores implications of these findings for workforce development in youth residential treatment and for social work education in general, suggesting simple methods for maximizing opportunities for situated learning.  相似文献   
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Objectives: The aim of this study was to see if earlier findings about factors associated with well-being could be replicated in a large population-based sample in Sweden. To the best of our knowledge, no research on well-being has been conducted on such a large population in a country, which by most standards is regarded as one of the most fortunate in the world. With its economic wealth and highly developed social welfare and health care system, Sweden is a country where the conditions for a high level of well-being would appear to be met. Methods: 10,441 randomly selected Swedish citizens, aged between 20 and 64 years, living in Stockholm County, completed a questionnaire covering issues such as demographics, social network and psychological well-being. The data were collected during the years 1998–2000. Results: Male gender, greater age, cohabiting, good childhood conditions, support from friends, sound financial situation and absence of negative life events were positively associated with well-being and explained 20% of the variance. Conclusion: The findings replicated earlier studies. Factors associated with well-being seem to remain the same, and are still explaining only a small part of the total variance, despite different measurements, time, sample sizes or country of origin. Therefore, research on well-being needs to take a new turn, by placing less focus on external factors and more focus on the internal factors, such as a person’s personality and coping strategies.  相似文献   
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Measuring fertility demand   总被引:1,自引:0,他引:1  
We propose a multidimensional conceptualization of fertility demand and evaluate potential measures of each dimension, using data from a telephone survey of Wisconsin residents age 18-34. Most of the measures met tests for interval-level measurement; all produced high estimates of test-retest reliability. We found support for only two dimensions of demand, intensity and certainty; potential measures of centrality had relatively low associations with any of the latent dimensions. Demand certainty improved prediction of fertility expectations beyond a trichotomous (yes, no, don’t know) measure, but demand intensity did not. We found mixed evidence for the conceptualization of fertility demand as a single continuum on which desire to avoid pregnancy is the opposite of desire to have a child.  相似文献   
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