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With the noted popularity of social networking sites, people increasingly rely on these social networks to address their information needs. Although social question and answering is potentially an important venue seeking information online, it, unfortunately, suffers from a problem of low response rate, with the majority of questions receiving no response. To understand why the response rate of social question and answering is low and hopefully to increase it in the future, this research analyzes extrinsic factors that may influence the response probability of questions posted on Sina Weibo. We propose 17 influential factors from 2 different perspectives: the content of the question, and the characteristics of the questioner. We also train a prediction model to forecast a question's likelihood of being responded based on the proposed features We test our predictive model on more than 60,000 real-world questions posted on Weibo, which generate more than 600,000 responses. Findings show that a Weibo's question answerability is primarily contingent on the questioner versus the question. Our findings indicate that using appreciation emojis can increase a question's response probability, whereas the use of hashtags negatively influences the chances of receiving answers. Our contribution is in providing insights for the design and development of future social question and answering tools, as well as for enhancing social network users’ collaboration in supporting social information seeking activities.  相似文献   
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Abstract

African Urban Youth Languages (AUYLs) are increasingly coming under the spotlight of linguists and sociolinguists across the continent, who are investigating their relationship to standard and/or vernacular varieties. Simultaneously, they are being discussed by educators and education researchers, although little has yet been published in this critical area. The difficulties for educators posed by students speaking “non-standard” varieties has been highlighted by recent studies investigating literacy and language in the classroom. This article presents an overview of some of the challenges posed to education by AUYLs. It considers recent studies of AUYLs in educational contexts from around the continent. It then presents data from South Africa which highlights different orientations towards the South African AUYL “Tsotsitaal” in educational domains. The argument is made that the position of both teachers and pupils is vulnerable, and that the legitimacy of the distinction between standard language and urban vernacular language needs to be reconsidered.  相似文献   
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Teacher self-efficacy refers to the beliefs teachers hold regarding their capability to bring about desired instructional outcomes and may be helpful for understanding and addressing critical issues such as teacher attrition and teacher use of research-supported practices. Educating students with autism likely presents teachers with some of the most significant instructional challenges. The self-efficacy of 35 special education teachers of students with autism between the ages of 3 to 9 years was evaluated. Teachers completed rating scales that represented self-efficacy and aspects of the following 3 of Bandura's 4 sources of self-efficacy: (1) sense of mastery, (2) social persuasions, and (3) physiological/affective states. Significant associations were observed between physiological/affective states and self-efficacy, but no associations were observed for the other sources.  相似文献   
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Many theories on college retention recognize the significance of student satisfaction as a positive factor in students’ persistence. Yet, there are few theories that address the relationship of degree program satisfaction to study behaviour and dropout. This paper explores the impact of degree program satisfaction on academic accomplishment and dropout. The impact of degree program satisfaction was studied within a multitheoretical framework. The results of the study show that student accomplishment not only depends on differences in academic ability but also on degree program satisfaction. Decreased degree program satisfaction appears to diminish both study motivation and study behaviour. The authors discuss some implications for current educational practice.  相似文献   
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Cohn and Farrington’s work in citation analysis has examined scholarly influence within criminological research for over 25 years. The current analysis tracks the ten most-cited scholars and each scholar’s most-cited works in four international criminology journals and six American criminology and criminal justice journals over twenty-five years and five time periods—1986–1990, 1991–1995, 1996–2000, 2001–2005, and 2006–2010. This approach extends the traditional approach to citation analysis by documenting increases and decreases in individual citation careers as well as in the most-cited scholarly contributions of the most-cited scholars during a period of significant growth in criminology. The most-cited works mostly fall within the areas of developmental and life-course criminology and criminal careers, reflecting the importance of these topics in criminology.  相似文献   
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