ZnS_(0.8)Se_(0.2) film for high resolution liquid crystal light valve

INTRODUCTION Liquid crystal light valves (LCLV) are devices whose function is to convert an input image pos-sessing specific wavelength, intensity and coher-ence to an output image in which some or all of these parameters are varied (Efron et al., 1985). Therefore, they can be used as image amplifiers for large screen projection display, image wavelength converters and incoherent-to-coherent image converters for optical data processing and correlation. The appli-cation potentialities ar…     

The learning environment associated with information technology education in Taiwan: Combining psychosocial and physical aspects

This study investigated perceptions of senior high school students towards the Taiwanese information technology (IT) classroom with the What Is Happening in this Class? (WIHIC) survey and explored the physical learning environment of the IT classroom using the Computerised Classroom Environment Inventory (CCEI). The participants included 2,869 students from 80 classes of senior high schools, vocational high schools and comprehensive high schools in Taiwan. This study had a mixed-method design in which both quantitative (WIHIC and CCEI scales) and qualitative (classroom observations and interview) methods were used. In order to have a cross-cultural perspective, the results of this study were also compared with the earlier findings of Zandvliet and Straker (Ergonomics 44:838?C857, 2001) and Zandvliet and Fraser (Learn Environ Res 8:1?C17, 2005), which involved Canadian and Australian students in IT settings. Further, we attempted to understand the influence of different gender compositions (all boys, all girls and mixed-gender classes) on students?? perceptions of the IT learning environment and students?? satisfaction with the IT course. Both the ??Spatial environment?? of physical environments and ??Autonomy/Independence?? of psychosocial environments were found to be indicators of students?? satisfaction with learning in IT courses, but physical variables as measured with the CCEI scales were not able to predict students?? perceptions of the psychosocial environment. Furthermore, relationships among students?? satisfaction, psychosocial environment and physical environment were quite different among students from classes with different gender compositions.     

Brain metastases of melanoma mechanisms of attack on their defence system by engineered stem cells in the microenvironment

This report gives a better emphasis on the role of targeted effectors （e.g. a combination of 5-FC with CD-NSPCs as compared to the application of NSPCs alone） and how such delivery of pro-drug activating enzymes and other tumor-killing substances may overcome melanocytic defence system, interact with and promote the host defence and immune response modulations not only in melanoma but, potentially, in other highly-metastatic cancers.     

《孙子兵法》在中国古代流传演变的四大阶段

《孙子兵法》诞生于春秋末期,它是中国古代战争实践的高度凝练与升华,自诞生之日起就被世人高度关注。从上古至清末,其发展演变经历了四大阶段。春秋战国时期:传承,弘扬;两汉时期:应用、整理;魏晋隋唐:注疏、拓展;宋元明清时期:形成两条主流传承系统——《武经》与《十家注》。《孙子兵法》贯通中国兵学史,并成为中国兵学发展历史上的支柱与轴心。     

A Three‐Dimensional Approach and Open Source Structure for the Design and Experimentation of Teaching‐Learning Sequences: The case of friction

We have developed a teaching‐learning sequence (TLS) on friction based on a preliminary study involving three dimensions: an analysis of didactic research on the topic, an overview of usual approaches, and a critical analysis of the subject, considered also in its historical development. We found that mostly the usual presentations do not take into account the complexity of friction as it emerges from scientific research, may reinforce some inaccurate students’ conceptions, and favour a limited vision of friction phenomena. The TLS we propose begins by considering a wide range of friction phenomena to favour an initial motivation and a broader view of the topic and then develops a path of interrelated observations, experiments, and theoretical aspects. It proposes the use of structural models, involving visual representations and stimulating intuition, aimed at helping students build mental models of friction mechanisms. To facilitate the reproducibility in school contexts, the sequence is designed as an open source structure, with a core of contents, conceptual correlations and methodological choices, and a cloud of elements that can be re‐designed by teachers. The sequence has been tested in teacher education and in upper secondary school, and has shown positive results in overcoming student difficulties and stimulating richer reasoning based on the structural models we suggested. The proposed path has modified the teachers’ view of the topic, producing a motivation to change their traditional presentations. The open structure of the sequence has facilitated its implementation by teachers in school in coherence with the rationale of the proposal.     

试论毛泽东的高等教育思想

毛泽东主席很关注我国高等教育的发展，并有着自己的一套理论，开始他提出“以俄为师”，按照苏联的模式来构建新中国高等教育框架的思想。毛泽东1958年的“大跃进”思想又导致了脱离实际地盲目发展高等教育，毛泽东的高等教育思想有两大特点：一是强调阶级斗争，政治挂帅；二是强调生产劳动，实践经验，他的高等教育思想中，既有重视大学生的政治教育和社会实践活动的合理内核，又有过分突出政治教育和忽视理论知识学习的不足之处。     

企业信息化的过程控制

本以提高企业信息化建设成效为目的，在总结出了企业信息化建设三大特征（工程的过程性，内容的层次性和建设的阶段性）的基础上，提出了过程控制的概念，内容和相应的保障体系，最后从控制论角度介绍了被控对象和方法。     

The incidence of severe physical child abuse in Wales

OBJECTIVES: The purposes of this study were: (1) to ascertain the incidence and nature of severe physical child abuse in Wales; (2) to ascertain the incidence of all physical abuse in babies under 1 year of age; and (3) to determine whether child protection registers (CPR) accurately reflect the numbers of children who are physically abused. METHODS: This is a population-based incidence study based in Wales, UK, for 2 years from April 1996 through March 1998. Children studied were under the age of 14 with severe physical abuse consistent with the criminal law level of Grievous Bodily Harm. This included seven categories of injury (death; head injury including subdural hemorrhage; internal abdominal injury; physical injury in Munchausen Syndrome by Proxy including suffocation; fracture; burn or scald; adult bite). Cases were ascertained by a pediatrician surveillance reporting system (WPSU). A criterion for inclusion was multidisciplinary agreement that physical abuse had occurred (at case conference, strategy meeting, or Part 8 Review). The incidence of all babies under 1 year of age with physical abuse was also studied. Ascertainment of babies under the age of 1 year was undertaken from CPR as well as the WPSU. RESULTS: Severe abuse is six times more common in babies [54/100,000/year (95% CI +/- 17.2)] than in children from 1 year to 4 years of age [9.2/100,000 (95% CI +/- 3.6)]. It is 120 times more common than in 5- to 13-year-olds [0.47/100,000 (95% CI +/- 0.47)]. This is mainly because two types of serious abuse (brain injury including subdural hemorrhage and fractures) are more common in babies under the age of 1 year than older children. Using data from two sources (the WPSU and CPRs), the incidence of physical abuse in babies is 114/100,000 (CI 114 +/- 11.8) per year. This equates to 1 baby in 880 being abused in the first year of life. The largely rural Health Authority area in Wales had incidence figures for abuse in babies that were 50% of the three other predominantly urban Health Authority areas. Boys throughout the series were more at risk of being severely abused than girls (p < .025). Only 29% of the babies under 1 year of age on the CPR had actually been injured. Thirty percent of abused babies under the age of 1 year and 73% of severely abused children over the age of 1 year had caused previous concern to health professionals regarding abuse or neglect. Conclusions: Physical abuse is a significant problem in babies under the age of 1 year. Very young babies (under 6 months old) have the highest risk of suffering damage or death as a result of physical abuse. Severe abuse, in particular subdural hematoma and fracture, is much more common in babies than in older children. There is evidence of failure of secondary prevention of child abuse by health professionals, with a greater need to act on concerns regarding abuse and neglect. Interagency child protection work in partnership with parents should focus more on protecting babies under age 1 year from further abuse than on maintenance of the infant within an abusive home. The CPR is not intended as an accurate measure of children suffering abuse. It is a record of children requiring a child protection plan and must not be used as a measure of numbers of abused children.     

Numerical Magnitude Representations and Individual Differences in Children's Arithmetic Strategy Use

Against the background of neuroimaging studies on how the brain processes numbers, there is now converging evidence that numerical magnitude representations are crucial for successful mathematics achievement. One major drawback of this research is that it mainly investigated mathematics performance as measured through general standardized achievement tests. We extended this research by investigating the association between numerical magnitude representations and children's strategy use during single‐digit arithmetic. Our findings reveal that children's symbolic but not nonsymbolic numerical magnitude processing skills are associated with individual differences in arithmetic. Children with better access to magnitude representations from symbolic digits retrieve more facts from their memory and are faster in executing fact retrieval as well as procedural strategies. These associations remain even when intellectual ability, digit naming, and general mathematics achievement are additionally controlled for. All this indicates that particularly the access to numerical meaning from Arabic symbols is key for children's arithmetic strategy development, which suggests that educators and remedial teachers should focus on connecting Arabic symbols to the quantities they represent.     

A behavior-genetic study of the legacy of early caregiving experiences: academic skills, social competence, and externalizing behavior in kindergarten

A critique of research examining whether early experiences with primary caregivers are reflected in adaptation is that relevant longitudinal studies have generally not employed genetically informed research designs capable of unconfounding shared genes and environments. Using the twin subsample (N = 485 pairs) of the Early Childhood Longitudinal Study-Birth Cohort, the current study provides evidence that early parental support (derived from observations at 24 months and around age 4, in prekindergarten) is associated with academic skills (r = .32), social competence (r = .15), and externalizing behavior (r = -.11) in kindergarten. Crucially, the shared environment accounted for virtually all of the correlation between parenting and academic skills, roughly half of the association between parenting and social competence, and approximately one fourth of the correlation between parenting and externalizing behavior.