Jamming and unjamming transition of oil-in-water emulsions under continuous temperature change

To analyze the jamming and unjamming transition of oil-in-water emulsions under continuous temperature change, we simulated an emulsion system whose critical volume fraction was 0.3, which was validated with experimental results under oscillatory shear stress. In addition, we calculated the elastic modulus using the phase lag between strain and stress. Through heating and cooling, the emulsion experienced unjamming and jamming. A phenomenon—which is when the elastic modulus does not reach the expected value at the isothermal system—occurred when the emulsion system was cooled. We determined that this phenomenon was caused by the frequency being faster than the relaxation of the deformed droplets. We justified the relation between the frequency and relaxation by simulating the frequency dependency of the difference between the elastic modulus when cooled and the expected value at the same temperature.     

Perceptions of Social Justice Among the South Asian and Mainstream Chinese Youth from Diverse Cultural Backgrounds in Hong Kong

This study examined the attitudes of young people from different cultural backgrounds in Hong Kong toward social justice, in particular those regarding gender, racial/ethnic equalities, and immigrant rights. Among the sample of 15,428 adolescents, aged 12 to 19, 7.1% were South Asians, 15.5% were immigrants from mainland China, 4.1% were cross-boundary students, 73% were Hong Kong mainstream Chinese, and 0.3% did not indicate. Their civic attitudes were assessed by the adapted International Civic and Citizenship Study (ICCS) (2009) questionnaire instrument. Latent means analysis (LMA) was conducted and the findings concluded that, compared with Hong Kong mainstream students (HKMS), South Asian (SA) students reported a statistically significant lower score on gender equality and significantly higher score on racial/ethnic equality and immigrants' rights. In contrast, both Cross-Boundary students (CBS) and Chinese Immigrant students (CIS) rated significantly higher on items relating to racial/ethnic equality and immigrants' rights, as compared with their HKMS counterparts. Regression analyses were also utilized to investigate how demographic variables predicted the latent variables. Specifically, regression analyses of different student groups on social justice issues were discussed to compare how demographic variables contributed to the subjective perceptions of these rights and responsibilities. Policy implications were drawn with reference to the data and recommendations for improvement were discussed.     

The Role of Immigration Background,Intergroup Processes,and Social-Cognitive Skills in Bystanders’ Responses to Bias-Based Bullying Toward Immigrants During Adolescence

This study examined how intergroup processes and social-cognitive factors shape bystander responses to bias-based and general bullying. Participants included sixth and ninth graders (N = 179, M = 13.23) who evaluated how likely they would be to intervene if they observed bullying of immigrant-origin and nonimmigrant-origin peers. Adolescents’ grade, intergroup attitudes, and social-cognitive abilities were evaluated as predictors of bystander responses. Nonimmigrant-origin adolescents reported that they expect they would be less likely to intervene when the victim is an immigrant-origin peer. Furthermore, participants with more intergroup contact and higher theory of mind were more likely to expect they would intervene in response to bias-based bullying. Findings have important implications for understanding factors that inform antibullying interventions that aim to tackle bias-based bullying against immigrants.     

师专开放性多媒体语言实验室的建设与管理探讨

本文作者对师专开放性多媒体语言实验室建设的必要性及多媒体语言实验室建设的目的进行了分析探讨 ,并对师专开放性多媒体语言实验室的建设与管理提出若干合理性的建议     

Understanding the role cumulative exposure to highly qualified science teachers plays in students' educational pathways

Years of experience, education level, and subject matter expertise are three measures of teacher qualification that are employed widely in contemporary educational policies including tenure, salary, and hiring, despite significant questions about their effectiveness at predicting student performance. These questions reveal a critical gap in the literature, concerning, in particular, the enduring impact of teachers' qualifications on students' educational experiences, and they ways in which related research has traditionally been framed and conducted. Specifically, studies examining these predictors have focused almost exclusively on investigating the role that an individual teacher's qualifications have on students' performance. In schools, however, students are exposed to different teachers every year, and those teachers often have differing qualifications. This study explores the impact of teacher qualification from a cumulative perspective by examining the relationship between cumulative science teachers' qualifications (measured by years of experience, education level, and subject matter expertise) and students' educational success (academic achievement, college enrollment, and decision to major in a Science, Technology, Engineering, or Mathematics field). The study found that students taught by science teachers who—as a group—were cumulatively more highly qualified, tended to have higher achievement, as well as better educational pathways and outcomes in STEM. Given that students are taught by teachers from across a broad spectrum of qualification throughout their schooling, findings from this study could have important implications, not only for research and practice, but also for education policy.     

当今世界女子跳马技术发展新动向分析

依据第41和第42届世界体操锦标赛实况录像及相关文献资料,采用录像观察与统计等方法,对2009年新规则下的世界女子跳马发展新趋向进行了系统分析与研究。发现：使用具有5.6分以上价值的＂踺子后手翻转体1800类＂动作和具有6.3分价值的＂前手翻类＂动作,分别与具有5.8分以上价值的＂踺子后手翻类＂动作搭配成具有高难度价值的两跳动作,是当今世界女子跳马技术竞争发展的新趋向;而提高动作完成难度的同时,进一步强化动作完成的质量,则还将是众多优秀跳马女选手继续努力的方向。     

Methodological Approaches to Comparing Pedagogical Innovations Using Technology

The study of educational innovations has become increasingly important in education research as many countries around the world have embarked on education reforms that aim to change both the goals and practices in education. There is also a general expectation that such innovations can be leveraged or supported by the use of information and communication technology (ICT) in the learning and teaching process. However, comparative studies of innovations are relatively rare. SITES M2, as an international comparative study of innovative pedagogical practices involving 28 participating systems, thus faced important methodological challenges the solution of which was no less an innovation in itself. This paper examines the methods of analysis used and the kind of research findings that resulted from the work of three research teams that had conducted comparisons of the case studies of innovation collected, including the work of the SITES M2 International Coordinating Centre (ICC). Even though all three studies attempted to examine similarities and differences across multiple case studies, the analysis conducted by the ICC looked for characterizations of the innovations while the other two studies developed meaningful ways to compare the cases in terms of levels of innovation across a number of dimensions. In discussing the methodological differences across these studies, this paper pays special attention to how one could compare different innovations in terms of their levels or extents of innovation and what such comparisons may contribute to our learning from technology-supported education innovations.     

Career Guidance and Counseling for University Students in China

In recent years, various forms of career guidance and career counseling have become more prominent and better serviced in most universities throughout the world. Such services are obviously to the benefit of the students themselves and for society. After an initially slow start, researchers and practitioners in China have now begun to focus on the localization of guidance and counselling theory and strategies in order to match more exactly actual employment situations in different regions of the country. This should result in a service that meets students' needs more effectively. Using mainly core literature examining the context of career guidance and counseling in China from 2001 to the present, this paper elaborates on the current situation and summarizes the progress that has been made. The authors detail the content, implementation, problems that exist, and ways of improving projects of this kind in Chinese universities. Conclusions and suggestions for further research on career guidance and counseling are provided.