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排序方式: 共有91条查询结果,搜索用时 15 毫秒
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In this article, we investigate the impact of job displacement on women’s first-birth rates as well as the variation in this effect over the business cycle. We use mass layoffs to estimate the causal effects of involuntary job loss on fertility in the short and medium term, up to five years after displacement. Our analysis is based on rich administrative data from Germany, with an observation period spanning more than 20 years. We apply inverse probability weighting (IPW) to flexibly control for the observed differences between women who were and were not displaced. To account for the differences in the composition of the women who were displaced in a downturn and the women who were displaced in an upswing, we use a double weighting estimator. Results show that the extent to which job displacement has adverse effects on fertility depends on the business cycle. The first-birth rates were much lower for women who were displaced in an economic downturn than for those who lost a job in an economic upturn. This result cannot be explained by changes in the observed characteristics of the displaced women over the business cycle.  相似文献   
63.
We propose different multivariate nonparametric tests for factorial designs and derive their asymptotic distribution for the situation where the number of replications is limited, whereas the number of treatments goes to infinity (large a, small n case). The tests are based on separate rankings for the different variables, and they are therefore invariant under separate monotone transformations of the individual variables.  相似文献   
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Most citizens with long‐term mental distress want a real job, and both Norway and European policies agree that work is a crucial part of social inclusion goals. Yet we know little about the actual impact of work on the recovery process for people with severe and often enduring mental distress. This article reports findings from a qualitative study which used an everyday life orientation to explore what it means to have a job and be an employee in regular work settings and ways of integrating work into daily life. Thirteen Norwegian men and women with experience of long‐term mental distress were interviewed. The findings indicate some ways in which work supports the recovery process: having an active working role, being in ordinary work settings, balancing rest and activity and having a sympathetic work environment. Often what may seem trivial to others is crucial to individuals in recovery from mental distress, yet is turned into models and system level solutions, where the uniqueness of everyday life and ‘common sense’ approaches remain unrecognised.  相似文献   
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Almost all informal firms in the Kenyan manufacturing sector are managed by Kenyans of African origin. Formal enterprises are run by Kenyans of both African and Asian origin. These three groups are distinct in terms of experience, productivity and access to finance. Asian formal firms are the most efficient, while there is no significant productivity difference between informal and formal African firms. There are thus weak incentives for African informal firms to become formal. At the same time, Kenya needs higher investments and larger exports to achieve economic take‐off, and this can only be achieved through an efficient formal sector. Therefore policy should aim to integrate the sectors by improving infrastructure, capacity‐building, credit delivery, and supporting networks.  相似文献   
68.
The paper focuses on motivations for the spread of new features within a speech community, and on the trajectories the changes follow during diffusion. One set of data represents language use, and here focus is on two changes which have been going on in Danish over the past 40 years, one grammatical and one phonetic. The other set of data are results from a nationwide speaker evaluation experiment which tests the subconscious attitudes to different types of speech among the youth in five different places covering Denmark from east to west. Results show that changes spread centrifugally from Copenhagen, even to the extent that reversal of changes spreads from Copenhagen. Furthermore, the attitudes reflected in the speaker evaluation experiment support the theory that language change is motivated by social psychological factors. Finally, it is argued that it is worthwhile considering the possibility of media being involved in processes of linguistic change.  相似文献   
69.
This paper derives lifetime distributions for components that fail due to overloading. We introduce the notion of energy similarity. This makes it possible to use knowledge about how components behave under different loads in order to establish a probability model. To obtain parametric families, we consider two physically distinct cases: (1) components that function individually and (2) components that function as part of a system. The former leads to univariate and the latter to multivariate models. The results are particularly useful when little or no data is available.  相似文献   
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This study explores the psychometric characteristics of childhood experiences ('Barndomsupplevelser'), using a Swedish translation of the 53–item version of the Childhood Trauma Questionnaire (CTQ). Fifty–five female addicts, treated in a compulsory–care setting, completed the questionnaire. Homogeneity and reliability were studied using principal component analyses (PCA) and Cronbach's alpha. The test was submitted to content analysis. Nearly all (94.5%) had experienced childhood abuse or neglect. The internal consistency is high. The 4–factor solution corresponded to the subscales of emotional and physical abuse (combined), of sexual abuse and of emotional neglect, while the items in the physical neglect subscale were distributed to several factors. In the 5–factor solution, this subscale was divided into two factors. Content analyses of these factors point to other meanings than physical neglect. The CTQ (Swedish translation) was found to have high consistency and homogeneity in four of the five subscales (emotional, physical and sexual abuse, and emotional neglect), while the subscale on physical neglect may need revision. The new 28–item brief version seems to be an improvement, with regard to these problems.  相似文献   
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