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281.
Nicole Martins Marie-Louise Mares Amy I. Nathanson 《Journal of Family Communication》2019,19(4):311-328
Although the predictors of off-line relational aggression have been examined in prior work, less is known about the factors that contribute to online relational aggression perpetration and victimization. This study examined parental restrictive and active mediation of teenagers’ social media use as potential predictors of these outcomes. We were particularly interested in understanding whether parental agreement about media rules and the consistency with which mediation was implemented had implications for teens’ social media use, conflict with parents, and experience with online relational aggression. We conducted an online survey of 814 adolescents from the United States (14- to17-year-olds), asking about perceived agreement between parents about media rules, parental mediation styles, the teens’ social media use, and their experiences with online relational aggression. Results showed that parental rule agreement negatively predicted inconsistent parental mediation. Inconsistent parental mediation predicted more adolescent social media use and more parent-teen conflict over media rules, which in turn, predicted both online victimization and perpetration. 相似文献
282.
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284.
Galiè A. Teufel N. Korir L. Baltenweck I. Webb Girard A. Dominguez-Salas P. Yount K. M. 《Social indicators research》2019,142(2):799-825
Social Indicators Research - The empowerment of women in the livestock sector is fundamental to achieve gender equality. It also is instrumental for increased household productivity and improved... 相似文献
285.
Like measures of outcome, measures of implementation are most useful and analytically powerful when measured at client-level and are quantitative. However, high-quality, individual-level, quantitative service utilization data can be expensive, intrusive, or otherwise impractical to obtain. Cruder data--for example, presence versus absence of a given service--are often more feasible to collect, as well as more likely to be available. Consequently, evaluators can benefit by finding ways to better exploit such data at the analysis phase to compensate for shortcomings at the collection phase. This article documents one such instance in which this was done. Specifically, it describes how quantitative, client-level implementation scales were derived from qualitative (categorical) data and used to support a cross-site synthesis of implementation and outcome analyses in a multisite evaluation. It also suggests additional scenarios in which quantitative implementation scales might be derived form qualitative services data. 相似文献
286.
Rockett IR 《Population bulletin》1998,53(4):1-40
This report examined injury and violence from a public health perspective. The discussion focuses on the magnitude of the problem, age and regional patterns, war mortality, motor vehicle accidents, natural disasters, US injury and violence mortality and morbidity trends by age, the history of injury, the relationship between energy and injury, similarities between disease and injuries, injury and violence prevention, risk factors, and medical care. The US has two Centers for Disease Control surveillance systems for monitoring behavior that increases the risk of injury or disease. A youth surveillance system surveys high school students about high risk behavior, such as use of weapons and nonuse of seat belts. The surveillance system misses the homeless and people without telephones and undersamples minorities, low income people, and males. Youth surveillance misses groups with high dropout rates, such as Blacks and Hispanics. Lower income people have higher disease and injury rates. US Black males are particularly vulnerable. Health professionals that aim to reduce injury risks must address underlying conditions that perpetuate poverty, such as residential segregation, racial discrimination, unemployment, and inferior educational opportunities. Survival of the injured is dependent on the speed with which Emergency Medical Teams can treat the injury. Treatment within the first hour is a critical determining factor. Specialized trauma centers and emerging technologies, such as geographic information systems, improve survival. The global diffusion of beliefs, values, and practices can promote or inhibit injury and violence. 相似文献
287.
AbstractThis paper examines student-community engagement activity in planning. This is a subset of university–community engagement, and is a point of overlap between such engagement and planning education. Community engagement activity enables students to learn in situ practical skills within live projects, while community partners may benefit from technical knowhow, and labour input. Based on a UK-wide survey and three in-depth case studies, the paper explores the pedagogical designs underpinning community engagement activities involving students, as well as the various capacities in which the different participants – students, instructors and community members – act. The analysis reveals considerable diversity in approaches. An alignment of student engagement activities in the planning curriculum with emerging transformative co-learning models of university-community engagement could offer novel opportunities for the discipline of planning and their impact on communities as well as the fields standing in today’s multiversities. 相似文献
288.
Abstract. The rise in inequality between the 1970s and the 1990s and the persistent gap in pay between large and small employers are two of the most robust findings in the study of labor markets. Mainstream economists focus on differences in observable and unobservable skills to explain both the overall rising inequality and the size–wage gap. In this paper we model how increasing returns to skill can affect the size–wage gap both with constant sorting and with size‐biased, skill‐biased technological change (e.g. if large firms always had access to computers, but small firms gained access to computers with the rise of affordable personal computers). We analyze the Current Population Surveys from 1979 to 1993 to determine whether large and small employers are converging in terms of mean wages (the employer size–wage effect), wage structures by occupation and education, characteristics of employees, and wage structures by region. We find mixed evidence of convergence and no consistent support for any single version of human capital theory. 相似文献
289.
国际经验表明 ,当一国的人均 GDP达到 30 0 - 10 0 0美元时 ,正是启动住房市场的关键时期 ;而住房抵押贷款在扩大内需、实现住房有效需求的转化中起着重要的作用。本文通过分析当前住房抵押贷款业务中存在的主要问题 ,探究影响我国住房抵押贷款发挥作用的一些主要因素 ,并客观评价现阶段我国住房抵押贷款所能起的作用 相似文献
290.
I. H. Tajuddin 《Journal of applied statistics》1999,26(6):767-774
In 1995, Arnold and Groeneveld introduced the measure of skewness gammaM in terms of F(mode)-the cumulative probability of a random variable less than or equal to the mode of the distribution. They assumed that the mode of a distribution exists and is unique. Independently, in 1996, the present author arrived at the measure of skewness T, which is given in terms of F(mean). This measure possesses desirable properties and is equally simple. The measure gammaM satisfies - 1 gammaM 1 , with 1 (- 1) indicating extreme right (left) skewness. However, the measure T can take on any value on the real line; hence, an equivalent measure gammaT is considered and is compared with gammaM. We consider a variety of families of distributions and include in our study other measures of skewness of interest. Skewness values are easily obtained using MINITAB programs. 相似文献