浅析影响沥青路面平整度的因素

分析了影响沥青路面平整度的各种因素，并针对存在的各种因素在施工中应注意的问题提出了相应的建议。     

Home visiting intervention for vulnerable families with newborns: follow-up results of a randomized controlled trial

OBJECTIVE: This study aimed to: (1) Assess the community utility of a screening tool to identify families with child abuse or neglect risk factors in the immediate postnatal period (2) Determine the social validity and effectiveness of a home visiting program using community child health nurses and offering social work services for identified families, and (3) Identify factors in the immediate postnatal period associated with the child's environment that predict poor adjustment to the parenting role. METHOD: A randomized controlled trial using a cohort of 181 families was undertaken to evaluate the impact of a home visiting program. Mothers were recruited in the immediate postnatal period and allocated either into the home visiting program or into a comparison group. The research design required self-identification into the study by providing positive responses to a range of risk factors. A repeated measures design was used to test parenting stress and maternal depression from the immediate postnatal period to 12-month follow-up and physical child abuse potential to 18-month follow-up. To test whether measures taken in the immediate postnatal period were predictive for poor adjustment to the parenting role, a linear regression model was used. RESULTS: The screening procedure was shown to have utility in the context of recruitment to a research trial and mothers were willing to accept the home visiting program examined by this study from the immediate postnatal period. From as early as 6 weeks the program demonstrated ability to impact positively on maternal, infant, family, and home environment variables (testing 90 randomly allocated intervention vs. 91 comparison families). At follow-up, parental adjustment variables were not significantly different between groups (testing the remaining 68 (75.5%) intervention vs. 70 (76.9%) comparison families) and home environment assessment scores had converged. Predictive analysis of factors measured in the immediate postnatal period revealed an absence of any predictive value to demographic characteristics, which secondary prevention efforts typically target. CONCLUSIONS: Follow-up evaluation did not demonstrate a positive impact on parenting stress, parenting competence, or quality of the home environment confirming the need to test early program success on longer term outcomes. Further, thestudy not only demonstrated that there was a relationship between maternal, family and environmental factors identified in the immediate postnatal period. and adjustment to the parenting role, but also challenged demographic targeting for child abuse and neglect risk. At the same time, the immediate postnatal period presented an exciting window of opportunity to access high-risk families who may otherwise have become marginalized from traditional services.     

Design,validation, and use of an evaluation instrument for monitoring systemic reform

Over the past decade, state and national policymakers have promoted systemic reform as a way to achieve high‐quality science education for all students. However, few instruments are available to measure changes in key dimensions relevant to systemic reform such as teaching practices, student attitudes, or home and peer support. Furthermore, Rasch methods of analysis are needed to permit valid comparison of different cohorts of students during different years of a reform effort. This article describes the design, development, validation, and use of an instrument that measures student attitudes and several environment dimensions (standards‐based teaching, home support, and peer support) using a three‐step process that incorporated expert opinion, factor analysis, and item response theory. The instrument was validated with over 8,000 science and mathematics students, taught by more than 1,000 teachers in over 200 schools as part of a comprehensive assessment of the effectiveness of Ohio's systemic reform initiative. When the new four‐factor, 20‐item questionnaire was used to explore the relative influence of the class, home, and peer environment on student achievement and attitudes, findings were remarkably consistent across 3 years and different units and methods of analysis. All three environments accounted for unique variance in student attitudes, but only the environment of the class accounted for unique variance in student achievement. However, the class environment (standards‐based teaching practices) was the strongest independent predictor of both achievement and attitude, and appreciable amounts of the total variance in attitudes were common to the three environments. © 2001 John Wiley & Sons, Inc. J Res Sci Teach 38: 646–662, 2001     

Classroom Environment Instruments: Development,Validity and Applications

Few fields of educational research have such a rich diversity of valid, economical and widely-applicable assessment instruments as does the field of learning environments. This article describes nine major questionnaires for assessing student perceptions of classroom psychosocial environment (the Learning Environment Inventory, Classroom Environment Scale, Individualised Classroom Environment Questionnaire, My Class Inventory, College and University Classroom Environment Inventory, Questionnaire on Teacher Interaction, Science Laboratory Environment Inventory, Constructivist Learning Environment Survey and What Is Happening In This Class) and reviews the application of these instruments in 12 lines of past research (focusing on associations between outcomes and environment, evaluating educational innovation, differences between student and teacher perceptions, whether students achieve better in their preferred environment, teachers' use of learning environment perceptions in guiding improvements in classrooms, combining quantitative and qualitative methods, links between different educational environments, cross-national studies, the transition from primary to high school, and incorporating educational environment ideas into school psychology, teacher education and teacher assessment).     

When Does 'Good News' Become 'Bad News'? Relationships between Government and the Integrated Schools in Northern Ireland

The development of a set of religiously integrated schools in Northern Ireland since 1981 is often portrayed in wholly positive terms. However, the continued growth of the movement has generated serious tensions at a number of levels which have wider implications for any analysis of the implications of parental choice.     

What do we know about early sport specialization? Not much!

In November 2005, the International Olympic Committee's Medical Commission issued a statement on Training the elite child athlete recommending that “more scientific research be done to better identify the parameters of training the elite child athlete”. This paper focuses on a specific issue related to training the child athlete: early specialization. While associations between early specialization and expertise development are highlighted, much research also suggests early specialization is associated with a range of negative consequences affecting physical, psychological, and social development. Alternately, some researchers have proposed that an early diversification approach does not disadvantage athletes in acquiring expertise, and is important for the development of intrinsic motivation and skill transferability. However, this review suggests that inadequate evidence exists to resolve the issue in favor of either approach.     

The advance of research and evaluation skills by EPs: implications for training and professional development

Research and evaluation has become increasingly important in many professions, including educational psychology, particularly as the profession moves to becoming more evidence‐based in its practice. The recent move to a three year doctoral programme in England, Wales and Northern Ireland may be viewed as a positive one in developing research skills, although it is also crucial to consider what could be done to extend the research skills of those already qualified. Lessons may be learned by looking to clinical psychology and some of the health professions. Finally, some further implications for the training and professional development of Educational Psychologists (EPs) in the UK are considered.     

Applied psychology and the case for individual casework: some reflections on the role of the educational psychologist

The authors consider the changing role of educational psychology in the current era and emphasise the importance of casework‐based interventions not only for influencing systemic work but also for maintaining credibility within the educational marketplace. With in‐school counselling and intervention becoming more popular, the natural providers of this service should be educational psychologists but this may not be the case in many local authorities. The authors consider the possibility of the profession becoming obsolete if there is a continuation of the move away from individual interventions to a more consultative based approach.     

The ongoing education of engineering practitioners: how do they perceive the usefulness of academic research?

This study explores the usefulness of academic research to engineering practitioners. Issues such as knowledge transfer, the research-practice gap and the changing social/political environment are discussed. An empirical survey of practitioners is analysed to better understand the engineering professions use of academic material, such as research journals, with the medical profession acting as the benchmark. The study also examines the future role for academia from the perspective of practitioners, with areas such as engagement, relevance, dissemination and education highlighted. While the study found there was a reasonable level of utilisation of academic material, there are still some significant gaps. The study brings to the fore the issue of relevance in applied research fields and highlights the need to evaluate the usefulness of our research to practitioners and the betterment of society.