在线学习管理系统中本科生与研究生交互比较研究(英文)

学习者与在线内容的交互被认为是决定网络教学和学习有效性的重要因素之一.学习环境中的任何事情总是一触即发,支持学习者与在线内容进行交互.当学习者与内容交互时,内部的反思性思考与对话发生了.本研究试图比较在线学习管理系统中研究生课程和本科课程中学习者交互之间的差别.基于所提出的研究学习者与在线内容交互的框架,研究者收集了学习管理系统日志和学习活动数据库中的相关数据;基于学习者与在线课程内容的交互模式和行为对收集到的数据进行了分析;并对教师和学习者在在线论坛中的讨论和交流的内容进行分析,尤其调查了已发生的交流的维度、深度和分类.基于上述研究成果.研究者认为应该加强网络内容的设计和传输,从而提升开放远程学习中在线学习环境的有效性.     

The Home Literacy Environment and Preschool Children's Reading Skills and Interest

Research Findings: This study explored the association between the home literacy environment (HLE), conceptualized as comprising parents’ reading beliefs and home literacy practices, and preschoolers’ reading skills and reading interest. It also identified factors in the HLE that predict emerging reading competence and motivation to read. A total of 193 children age 6 years from 14 preschools across Singapore and their parents participated in the study. The parents completed a reading belief inventory, a family literacy activity inventory, and a demographic questionnaire that surveyed the child's reading interest. The children were administered a battery of standardized literacy tests. The study found a moderate relationship between the HLE and children's reading competencies and a strong relationship between the HLE and children's reading interest. When parents’ education level and children's age were controlled, hierarchical multiple regression analyses found that family literacy activities contributed more unique variance to children's reading outcomes and reading interest than did parents’ reading beliefs. Active parental involvement was the strongest component of the HLE, with parent–child engagement in reading and writing emerging as the best predictor of both the child's emerging reading skills and reading interest. With respect to reading beliefs, parents’ efficacy in supporting literacy development before their child attended school positively predicted reading competence, as did parents’ affect and verbal participation in fostering reading interest. However, verbal participation negatively predicted Singapore children's reading competence. Practice or Policy: The implications of the results were discussed.     

School‐to‐work transition services for students with disabilities in Malaysia: organisations' views on policy and practices

Transition services are required by law for students with disabilities in many developed countries. In Malaysia, however, there is still no specific legislation mandating that school‐to‐work transition planning and services be provided to students with disabilities. This study investigated the state of the transition services provided by educational organisations to students with disabilities in Malaysia. A mixed method research design, which utilises both quantitative and qualitative research techniques, was employed to obtain information from 23 government organisations and NGOs involved in the education and training of students with disabilities. This study found that the organisations surveyed were aware of the lack of transition support and call attention to the importance of instituting a national policy on school‐to‐work transition services and supported employment systems for students with disabilities. The legislative and educational implications for Malaysia are discussed.     

Teachers’ experience with inclusive education in Singapore

Teachers’ positive attitude is most critically and consistently associated with successful inclusion. However, little is known about teachers’ first-hand encounters with inclusive education in Singapore. We present findings from a qualitative study on inclusion based on focus group interviews with 202 teachers from 41 resourced primary schools. The data were transcribed and coded using Interpretive Phenomenological Analysis and NVIVO software. Two broad clusters identified were teachers’ positive and negative experiences in implementing inclusion. More reference was made to negative than positive experiences. The most dominant negative experience was stress from challenging behaviours and instructional difficulties of catering adequately for diverse needs in the same classroom. The most salient positive experience was satisfaction with pupils’ progress and new learning for teachers. Classroom practices that facilitated inclusion and the value of training in shaping teachers’ attitudes towards inclusion were highlighted.     

Teacher demand: crisis what crisis?

This paper is based on two studies of teacher recruitment and retention commissioned by the General Teaching Council of Wales and the ESRC. Using official statistics from a variety of secondary sources, it shows trends over time in teacher numbers in England and Wales, and examines teacher vacancies, pupil‐teacher ratios and teacher wastage. It concludes that although individual indicators, examined in isolation, are an inadequate basis for assessments of the situation, there is no evidence in the data of any ‘crisis’ of teacher supply or demand in Wales (or indeed most of England). There are regional, occasional and subject‐specific disparities, but there are now more teachers than ever before, while the number of pupils in schools is falling. The paper, therefore, considers a variety of possible explanations for the widely‐held belief that there is a serious shortage of teachers.     

Multicultural early childhood education: practices and challenges in Malaysia

Multicultural early childhood education is necessary in a culturally diverse country like Malaysia. Preschool teachers play an important role in implementing multicultural education in the classroom. This paper reports the findings of a self-report questionnaire involving 854 preschool teachers in Malaysia. The preschool teachers disclosed their current multicultural education practices as well as the challenges they encountered when implementing multicultural education. While the majority of teachers claimed that they implemented multicultural education, a closer examination revealed that most of them used the tourist or contribution approach which focuses on only the outward manifestations of a culture when dealing with multicultural education. The transformation or anti-bias approach was used by only a small number of teachers. The teachers identified some challenges in multicultural education implementation, such as lack of instructional resources and the lack of stakeholder support. Thus, it is important to ensure teachers develop more critical understandings of multicultural education through teacher education training and programs. Other efforts to help teachers overcome challenges in implementing multicultural education include producing and developing more instructional materials and learning aids, which are suitable for young children and appropriate for the local context. Preschool teachers also need stakeholders to give more support and to acknowledge the importance of implementing multicultural early childhood education.     

Family risks and protective factors: Pathways to Early Head Start toddlers’ social-emotional functioning

Early Head Start children may be more likely to exhibit difficulties with social-emotional functioning due to the high-risk environments in which they live. However, positive parenting may serve as a protective factor against the influence of risk on children's outcomes. The current study examines the effects of contextual and proximal risks on children's social-emotional outcomes and whether these effects are mediated by maternal sensitivity. One-hundred and fourteen low-income, high-risk mother-toddler dyads participated in this longitudinal study designed to examine the relationships between family risk, mothers’ sensitivity, and children's social-emotional functioning in Early Head Start families. Researchers conducted two 2.5-h home visits, approximately six months apart, during which they assessed mothers’ levels of family risk, maternal sensitivity, and their children's social-emotional functioning. A theoretically derived structural equation model was tested to examine the direct paths from family risk variables to children's social-emotional functioning and the indirect paths by way of the mediator variable, maternal sensitivity. Support was found for a model that identified maternal sensitivity as a mediator of the relationship between parenting stress and children's social-emotional functioning. Results have implications for providing services through Early Head Start programs that are aimed at alleviating parenting stress and enhancing maternal sensitivity.     

Hydroxychavicol,a polyphenol from Piper betle leaf extract,induces cell cycle arrest and apoptosis in TP53-resistant HT-29 colon cancer cells

This study aims to elucidate the antiproliferative mechanism of hydroxychavicol(HC).Its effects on cell cycle,apoptosis,and the expression of c-Jun N-terminal kinase(JNK)and P38 mitogen-activated protein kinase(MAPK)in HT-29 colon cancer cells were investigated.HC was isolated from Piper betle leaf(PBL)and verified by high-performance liquid chromatography(HPLC),nuclear magnetic resonance(NMR),and gas chromatography-mass spectrometry(GC-MS).The cytotoxic effects of the standard drug 5-fluorouracil(5-FU),PBL water extract,and HC on HT-29 cells were measured after 24,48,and 72 h of treatment.Cell cycle and apoptosis modulation by 5-FU and HC treatments were investigated up to 30 h.Changes in phosphorylated JNK(pJNK)and P38(pP38)MAPK expression were observed up to 18 h.The half maximal inhibitory concentration(IC₅₀)values of HC(30μg/mL)and PBL water extract(380μg/mL)were achieved at 24 h,whereas the IC₅₀of 5-FU(50μmol/L)was obtained at 72 h.Cell cycle arrest at the G0/G1 phase in HC-treated cells was observed from12 h onwards.Higher apoptotic cell death in HC-treated cells compared to 5-FU-treated cells(P<0.05)was observed.High expression of pJNK and pP38 MAPK was observed at 12 h in HC-treated cells,but not in 5-FU-treated HT-29 cells(P<0.05).It is concluded that HC induces cell cycle arrest and apoptosis of HT-29 cells,with these actions possibly mediated by JNK and P38 MAPK.