The Journal of Technology Transfer - In this paper we first propose a proxy for early stage activity in a country’s exports based on product life cycle theory. Employing a conditional latent... 相似文献
Youth’s career attainment is associated with socioeconomic background, but may also be related to their beliefs about causes of success. Relationships between 17-year-olds’ socioeconomic status (SES) and causal beliefs about success, and whether these beliefs predict career attainment after completing a vocational or university degree were examined using data from the German Socio-Economic Panel Study (n?=?997, 48.5% female). Youth with higher SES parents and those who attended higher levels of high schools were less likely to believe that success in society is due to external causes, but SES was unrelated to the belief that success is due to personal merit or ability. Youth who believe that success is due to external causes attained lower income, occupational prestige, and job autonomy, and slower increases in income over time. There were also significant indirect effects of youth’s parents’ SES and their own high school levels on career attainment through such external causal beliefs; merit beliefs, by contrast, were largely unrelated to career attainment. These results suggest that beliefs about external causes of success may uniquely contribute to the transmission and maintenance of SES across generations and over time. 相似文献
The marginalization or exclusion of women from economic theory has a long and distinguished pedigree. Michele A. Pujol, in her groundbreaking study Feminism and Anti-Feminism in Early Economic Thought (1998), wryly observes that whilst Adam Smith devotes an entire page to the question of women's economic activity in his Wealth of Nations , women 'are nowhere mentioned in Ricardo's Principles of Political Economy and Taxation and in Malthus's Principles of Political Economy ' (Pujol 1992:17-23). In similar fashion Groenewegen, in Feminism and Political Economy in Victorian England (1994), notes that 'there have been few women contributors to … economic literature' (Groenewegen 1994:16). Indeed, as far as the first half of the nineteenth century is concerned, only two women - Jane Marcet and Harriet Martineau - seem to have written on political economy. Both wrote as expositors and popularizers of existing theoretical knowledge, content to repeat rather than challenge established orthodoxies, and as a result neither has commanded much more than a footnote in the history of economic thought. Martineau enjoys somewhat more of an enhanced reputation in the field of literary studies but even here attention tends to focus on A Manchester Strike at the expense of her other economic fictions. The present discussion, then, attempts to expand the field of vision with regard to Martineau by examining four of her economic tales: The Rioters (1827), The Turn-Out (1829), The Hill and the Valley (1832) and A Manchester Strike (1832). The first two of these were written prior to Martineau's 'conversion' to political economy, whilst the latter two appeared as part of Illustrations of Political Economy (a series of twenty-three tales published in twenty-five monthly parts between 1832 and 1843). As a way of exploring the disjuncture between economic theory and narrative events within these tales, the narratives themselves are read as implicit commentaries on (as well as 'illustrations'of) aspects of political economy, thereby allowing Martineau to emerge as a much more complex and problematic writer than is usually acknowledged. Also under examination here are the economic ideas of Frances Wright, another early nineteenth-century woman writer, particularly her critique of the existing economic order (which sharply differentiates her from Martineau) and her proposals for a new 'feminine' economy. The intention is to show that women writers on economics were not confined to the role of 'dutiful intellectual daughter, repeating … the words of her intellectual fathers' (David 1987:35)--to borrow Deirdre David's characterization of Martineau in Intellectual Women and Victorian Patriarchy --but were capable of articulating a thoroughgoing critique of existing theoretical models. 相似文献
Depression is a common and debilitating disorder in adolescence. Sleep disturbances and depression often co-occur with sleep disturbances frequently preceding depression. The current study investigated whether catastrophic worry, a potential cognitive vulnerability, mediates the relationship between adolescent sleep disturbances and depressive symptoms, as well as whether there are gender differences in this relationship. High school students, ages 16–18, n = 1,760, 49 % girls, completed annual health surveys including reports of sleep disturbance, catastrophic worry, and depressive symptoms. Sleep disturbances predicted depressive symptoms 1-year later. Catastrophic worry partially mediated the relationship. Girls reported more sleep disturbances, depressive symptoms, and catastrophic worry relative to boys. The results, however, were similar regardless of gender. Sleep disturbances and catastrophic worry may provide school nurses, psychologists, teachers, and parents with non-gender specific early indicators of risk for depression. Several potentially important practical implications, including suggestions for intervention and prevention programs, are highlighted. 相似文献
An important component of crime scene reconstruction is bloodstain pattern analysis (BPA). Where BPA concerns impact patterns, estimating the area of origin is critical information for scene reconstruction. Traditionally, this is achieved by measuring individual bloodstains and performing trigonometric calculations; however, 3D scanning has been proposed as a viable alternative for overcoming logistical and practical concerns with the manual method. Therefore, this project aimed to establish whether the FARO Focus 3D scanner and FARO Zone 3D software can improve the accuracy of area of origin estimates relative to the manual method. We created a series of eight bloodstain impact patterns and performed paired analysis using the two methods to estimate areas of origin for each pattern. Our data suggested that FARO-derived estimates were generally more accurate than using the manual method. FARO-estimated heights of origin areas were generally closer to the true distance. Both methods underestimated the distance from the wall for most patterns originating 150mm or greater from the wall, but overestimated distances for patterns originating closer to the wall. The degree to which distances were underestimated increased significantly the further the blood source was from the wall and was greater for FARO-derived estimates. The results of this research contribute to the validation of these instruments for operational implementation for BPA and should be considered alongside the practical benefits of 3D scanning relative to manual methods. Further, 3D scanning can provide reliable BPA reconstruction documentation for technical review and court presentation. 相似文献