Risk spillover between Bitcoin and conventional financial markets: An expectile-based approach

In order to challenge the existing literature that points to the detachment of Bitcoin from the global financial system, we use daily data from August 17, 2011–February 14, 2020 and apply a risk spillover approach based on expectiles. Results show reasonable evidence to imply the existence of downside risk spillover between Bitcoin and four assets (equities, bonds, currencies, and commodities), which seems to be time dependent. Our main findings have implications for participants in both the Bitcoin and traditional financial markets for the sake of asset allocation, and risk management. For policy makers, the findings suggest that Bitcoin should be monitored carefully for the sake of financial stability.     

专题微课生物化学教学新模式的探索与实践

专题微课教学是基于一门学科或课程的某个重要专题设计开发的教学模式。课题组在生物化学的课程中设计了专题微课。生物化学的专题微课教学包括确立教学目标、教学方法、微课录制与编辑加工等环节，应注意建立全新的网络教学平台、互动式教学、抓好指导小组资料整理等教学策略，其成功需要教师有较高的综合素质和教学技能。实践证明，生物化学的专题微课教学取得了良好的教学效果，学生的成绩有了一定提高。     

加强开展两课教育,提升大学生思想素质

思想政治教育在大学教育中非常重要,决定着学生未来成长的道路和做人的原则。"两课"教育的意义不在于要学生记住一定的理论知识,而在于引导形成学生正确的思想和价值观念。     

课内比赛教学模式在普通高校篮球选项课中的实验研究

通过实验法和统计分析法,对篮球选项课进行“课内比赛教学模式”的教学实验研究,结果表明,这种教学模式不仅符合学生的兴趣要求和学习需要,能激发学生的学习兴趣,强化学习动机,而且还能够有效提高学生篮球技术技能和篮球技战术综合运用能力,并能真正实现高校体育的终身体育目标,可在普通高校篮球选项课中进行推广。     

Rural Economies and Transitions to Capitalism: Germany and England Compared (c.1200–c.1800)

Based on a synthesis of the empirical scholarship on England and Germany, this paper demonstrates that in both regions, rural socio‐economic developments from c.1200 to c.1800 are similar: this period witnesses the rise to numerical predominance and growing economic significance of the ‘sub‐peasant classes’, which had a growing impact on the market as a result of their increasing market dependence, and from which – towards the end of the period – a rural proletariat emerged. Against the influential theory of Robert Brenner, it is argued that the period c.1200–c.1400 cannot really be categorized as ‘feudal’ according to Brenner's definition; and ‘agrarian capitalism’ does not adequately describe the socio‐economic system that obtained by the end of the sixteenth century. A genuine transition to capitalism is only evident from after c.1750, and can be found in Germany as well as in England; it is predicated both on ideological shifts and on the evolution of the rural proletariat, which is only found in large numbers by or after c.1800.     

Body image as a leisure constraint: Examining the experience of aerobic exercise classes for young women

Abstract

Previous research has shown that women, and especially young women, in this culture experience pressure to be thin. Although considerable research has been directed toward the investigation of body image and its relationship to psychological health and self‐image, the impact of body image on leisure behavior has not been adequately addressed, nor has body image received much attention as a potential leisure constraint. The purpose of this study was to investigate ways in which body image might function as a constraint to young women's participation in aerobic exercise classes. The study used both quantitative and qualitative methods, including a survey of 190 women undergraduate students and in‐depth interviews with a sub‐sample of 11 students. The qualitative data are the main focus of this analysis. The data indicated that body image did not seem to prevent participation or constrain levels of participation in aerobics. Nevertheless, body image concerns were shown to constrain the enjoyment of aerobics as a leisure activity, and this reduction of enjoyment was related to the clothing worn for aerobics and to competition over appearance and body weight among participants. The findings also showed that body image functioned as a constraint into participation in that body‐image‐related concerns were a major motivating factor exerting pressure on young women to participate in aerobics. In sum, the study suggested that body image can constrain leisure in some situations, although it is not a constraint in the traditional sense of preventing participation. The implications of these findings for the conceptualization of leisure constraints were discussed. Furthermore, some practical implications for the provision of aerobics classes were provided.     

针对大学生逃课采取的思想教育策略探析

大学生逃课是高校普遍存在的一种现象。促使大学生逃课的原因复杂多样,笔者试从学生自身、学校教学质量及管理等各方面分析大学生逃课原因,并从提高学生思想认识入手,探析可采取的教育策略。     

DISTRIBUTIONS OF REAL INCOME: WITHIN COUNTRIES AND BY WORLD INCOME CLASSES

Income and expenditure data from 14 countries (representing one-third of the world's population), mostly from the 1970s, are used to construct national income distributions and , after normalizing by purchasing power parities, to construct a "world" distribution of real income. The density of real-income equivalent groups (socio-economic classes) across countries is measured for the "affluent," the "well-off," and the "poor." In comparison with earlier studies, most national distributions of income seem to have been improving, the numbers of those in poverty (based on real income) are lower, and, most important (and disturbing for some) is that the "affluent" class (and those above "middle class" income levels) has (prematurely) swelled in a number of developing countries.