缅甸宛江桥周围冲刷的研究

对缅甸宛江桥桥墩周围的冲刷、桥梁通车时的稳定性及其对通航条件的影响进行分析.HEC-RAS模型用来对河道中的水流状况尤其是在桥正常运营时航道内的水流条件进行实际分析,旨在预测桥墩周围可能发生的最大冲刷,并将结论用于缅甸将来的桥梁建设事业之中.模型计算的结果与实测冲刷作了比较,在急流时,使用相同糙率的情况下,一维数值模拟得较好,数值模拟得到的水位与观测的结果一致,表明HEC-RAS模型预测冲刷深度是可行的.     

Special education and general education preservice teachers’ co-teaching experiences: a comparative synthesis of qualitative research

Co-teaching is commonly used to support students with disabilities in inclusive educational settings. However, there is often a gap between the potential effectiveness of co-teaching and actual classroom practice. This study examined preservice teachers’ co-teaching experiences to better understand this gap to identify potential practices for improving teacher training and service delivery. A review of 11 studies revealed that both special education and general education preservice teachers believed that co-teaching practices provided them opportunities to communicate and work collaboratively. Both groups agreed on the significant impact of personality in co-teaching as well as challenges in implementing co-teaching. Furthermore, special education preservice teachers noted that they lacked content knowledge, whereas general education preservice teachers thought they needed more training in the provision of accommodations and modifications. Study limitations, areas for future research, and implications for preservice teacher preparation are discussed.     

The relationship between parental bonding and peer victimization: examining child stress and hopelessness as mediators

The purpose of the current study was to investigate a two-stage model in which parent-related stress and hopelessness each served as mediators of the relationship between perceived parental bonding and South Korean adolescent peer victimization. This study also examined whether the mediating relationships differed by the gender of parents and adolescents. A casual chain with three links and four sets of variables were analyzed using structural equation modeling. Data were collected from 800 adolescents attending 10 middle schools in the Busan region of South Korea. Results indicated that both maternal and paternal parental bonding were negatively associated with stress, stress was positively associated with hopelessness, and hopelessness was positively associated with South Korean adolescent peer victimization. Most importantly, the significant negative associations between both maternal and paternal parental bonding and peer victimization were mediated by both stress and hopelessness. Furthermore, gender differences in these relationships existed for both parents and adolescents. Limitations and implications to practice were discussed.     

Brief Report on PROSPER Academic Outcomes: Extended Model of Crossover Effects on Young Adult College Success

This study examines crossover effects of adolescent substance misuse preventive interventions on academic success in college. It evaluates pathways of influence on college grades, via effects on school engagement, problem-solving skills, and substance misuse in high school. Data were collected as part of an Randomized Controlled Trial (RCT) evaluating a multicomponent intervention conducted in 28 school districts with middle school students. At age 19, study participants (N = 1,488) enrolled in college reported on college grades. The model fit the data, supporting hypothesized pathways of intervention impacts. Inclusion of a significant direct effect on college grades further improved model fit. Results support the potential for universal substance misuse preventive interventions delivered by community partnerships during middle school to yield effects on long-term academic success.     

A Policy Entrepreneur in the Information Society: Shaping the Interdisciplinarity of Brain Research in Korea

This paper aims to show the historical contingency of policy entrepreneurship in science by analyzing the case of brain research in South Korea during the last decade of the 20th century. This decade saw an increasing emphasis placed upon the development of information technology and its use for societal changes. The rise of the “Information Society” in Korea was an important context for shaping the field of brain research as an amalgam of multiple disciplines which led to the passage of the Brain Research Promotion Act; the first law in the world enacted to promote brain research. This paper, through focusing on in what context someone takes up an entrepreneurial role, shows how the concept of interdisciplinarity has been shaped by, and how it has influenced the development of brain research and its related policy measures in Korea. It ultimately reveals the contingent and transient aspect of a policy entrepreneur and his effect on building a new field.     

User centric cloud service model in public sectors: Policy implications of cloud services

This study examines the acceptance of cloud computing services in government agencies by focusing on the key characteristics that affect behavioral intent. The study expanded upon the technology acceptance model by incorporating contextual factors such as availability, access, security, and reliability. The research model was empirically verified by investigating the perception of users working in public institutions. Modeling results showed that user intentions and behaviors were largely influenced by the perceived features of cloud services. Also these features were found to be the significant antecedents of cloud computing usefulness and ease of use. The findings should guide governments' promotion of cloud public services to increase user awareness by enhancing usability and appeal and ensuring security.     

Help-seeking tendencies during early adolescence: An examination of motivational correlates and consequences for achievement

The present study examined the motivational correlates and achievement consequences of students’ help-seeking tendencies during sixth grade (N = 217). Students’ grades were collected from school records at the beginning and end of the school year. Midway through the year students reported on their academic self-efficacy and social demonstration goals; teachers reported on students’ help-seeking tendencies. First quarter grades and academic self-efficacy were positively related to adaptive help seeking and negatively related to avoidant help seeking. In addition, a social demonstration-approach goal was negatively related to adaptive help seeking. Help-seeking tendencies predicted 3rd quarter grades, controlling for 1st quarter grades.     

Stability of Core Language Skill from Early Childhood to Adolescence: A Latent Variable Approach

This four‐wave prospective longitudinal study evaluated stability of language in 324 children from early childhood to adolescence. Structural equation modeling supported loadings of multiple age‐appropriate multisource measures of child language on single‐factor core language skills at 20 months and 4, 10, and 14 years. Large stability coefficients (standardized indirect effect = .46) were obtained between language latent variables from early childhood to adolescence even when accounting for child nonverbal intelligence and social competence and maternal verbal intelligence, education, speech, and social desirability. Stability coefficients were similar for girls and boys. Stability of core language skill was stronger from 4 to 10 to 14 years than from 20 months to 4 years, so early intervention to improve lagging language is recommended.