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1.
The rapid growth of online education at the K-12 level in recent years presents the need to explore issues that influence the academic experiences of students choosing this method of learning. In this study, we examined factors that promote/hinder the learning experiences and academic self-concept of minority students attending an online high school. Qualitative interviews were conducted with twenty-four African American, and sixteen Hispanic high school students. The results showed that collaborative learning activities, access to resources, time convenience, student-teacher interactions, student-student interactions, improved academic behavior, and parental support helped to enhance online learning experiences and academic self-concept of the minority students. On the contrary, the lack of social presence, and the lack of cultural inclusion in course content constrain online learning experiences and academic self-concept of the students. The findings revealed some similarities between factors that influence minority students learning experiences online, and in face-to-face setting. The study also highlighted the need for teachers of online courses to understand the cultural backgrounds of minority students, and to use their knowledge to improve the learning experiences and academic self-concept of these students. Implications for teaching minority high school students in an online environment, as well as suggestions for future research are provided. (Keywords: minority students, K-12 online school, factors, online learning, self-concept)  相似文献   
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This study is based on a conceptual framework which emphasized the importance of viewing early intervention outcomes in relation to both program and nonprogram variables. Three broad classes of independent variables were included in the framework child, program, and family ecology. The unique and combined contributions of these three sets of variables to the prediction of three indices of intervention outcome was assessed through regression techniques. As much as 68% of the variance in children's post-intervention developmental age (DA2) was explained by the combined influence of all three classes of variables. All three classes of variables again contributed uniquely to the prediction of parental satisfaction with the intervention, explaining 45% of the variance. The three classes of variables explained 36% of the variance in children's rate of development during the intervention (RDI), although the contribution of the program class was very minimal. In addition to ascertaining the contributions of sets of variables, the importance of individual variables within sets was also examined. Results from both types of analysis underscored the important role of nonprogram variables in the determination of both child and parental outcomes. The implications of these findings for the design and evaluation of early intervention are discussed.  相似文献   
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In Ghana many rural illiterate people practise traditional medicine and spread their knowledge through oral communication among themselves. This paper observes that traditional health information which freely circulates, and is actively disseminated by healers in rural communities greatly contributes to the knowledge for preparing home remedies and other traditional interventions. Oral communication can give rise to inaccurate and even dangerous information where charlatans can penetrate and operate within the health system. The Danfa project, which involved verbal teaching of modern health techniques to illiterate herbalists, and educating villagers about improved traditional medical practices, is described as a success story of information provision for illiterates. The experience is applied to propose the modification of some training programmes under the Ministry of Health to produce traditional health care information providers. Repackaged information and the public media are recommended as the most effective method of transferring knowledge to those unable to read.  相似文献   
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Increased emphasis in the provision of early intervention programmes with families of biologically impaired or at‐risk infants, in recent years, has produced a wide variety of such services based upon various conceptual and empirical analyses of early development. The impact of these early interventions has been investigated quite extensively since the mid‐sixties, particularly regarding positive effects upon intellectual development. A synthesis of recent research regarding mother‐child interaction patterns and the influence of these social interactions upon cognitive, linguistic, and social development has resulted in a shifting emphasis in early interventions from the parent‐as‐teacher model to a parent‐infant interaction model. In concert with this shifting emphasis, interactional models of intervention are considered and described which provide the basis for identifying specific intervention strategies related to parent‐child interaction dynamics. These strategies provide the basis for programmes which would be sensitive to the idiosyncracies of individual families. That is, the unique characteristics of each family/infant may be more effectively accommodated through a transactional analysis of individual dyadic interaction patterns, and through the identification of strategies specifically suited to the unique needs of the parent‐child dyad.

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6.

The onset of inflammatory bowel disease (IBD) involves many factors, including environmental parameters, microorganisms, and the immune system. Although research on IBD continues to expand, the specific pathogenesis mechanism is still unclear. Protein modification refers to chemical modification after protein biosynthesis, also known as post-translational modification (PTM), which causes changes in the properties and functions of proteins. Since proteins can be modified in different ways, such as acetylation, methylation, and phosphorylation, the functions of proteins in different modified states will also be different. Transitions between different states of protein or changes in modification sites can regulate protein properties and functions. Such modifications like neddylation, sumoylation, glycosylation, and acetylation can activate or inhibit various signaling pathways (e.g., nuclear factor-κB (NF-κB), extracellular signal-regulated kinase (ERK), and protein kinase B (AKT)) by changing the intestinal flora, regulating immune cells, modulating the release of cytokines such as interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α), and interferon-γ (IFN-γ), and ultimately leading to the maintenance of the stability of the intestinal epithelial barrier. In this review, we focus on the current understanding of PTM and describe its regulatory role in the pathogenesis of IBD.

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The successful implementation of comprehensive sexuality education (CSE) programmes in schools depends on the development and implementation of strong policy in support of CSE. This paper offers a comparative analysis of the policy environment governing school-based CSE in four low- and middle-income countries at different stages of programme implementation: Ghana, Peru, Kenya and Guatemala. Based on an analysis of current policy and legal frameworks, key informant interviews and recent regional reviews, the analysis focuses on seven policy-related levers that contribute to successful school-based sexuality education programmes. The levers cover policy development trends; current policy and legal frameworks for sexuality education; international commitments affecting CSE policies; the various actors involved in shaping CSE; and the partnerships and coalitions of actors that influence CSE policy. Our analysis shows that all four countries benefit from a policy environment that, if properly leveraged, could lead to a stronger implementation of CSE in schools. However, each faces several key challenges that must be addressed to ensure the health and wellbeing of their young people. Latin American and African countries show notable differences in the development and evolution of their CSE policy environments, providing valuable insights for programme development and implementation.  相似文献   
9.
The issue of where to teach children with special educational needs (SEN) and disabilities has been a great concern as countries respond to the United Nations Educational, Scientific and Cultural Organization (UNESCO) Salamanca Statement on inclusion of 1994. In this study, the responses of 500 trained and untrained mainstream primary school teachers selected from three of the ten regions of Ghana were analysed to investigate their attitudes to including children with SEN and disabilities in mainstream schools in Ghana. These attitudes were examined alongside teachers’ characteristics such as gender, age, length and level of teaching experience, and knowledge of SEN, and also the type, nature and degree of children’s SEN. The results showed that teachers in Ghana were positive towards the inclusion of children with SEN and disabilities with a few reservations which are elaborated. On the basis of the findings, conclusions were drawn that the inclusion agenda should be subject to national and local interpretation, aimed at ensuring that policies and regulations on SEN are fashioned to meet local situations and standards.  相似文献   
10.
This study reported the findings of a survey from a broader study conducted to: (a) find out the level to which students use computers; (b) compare which gender is more proficient in computer use; and (c) discuss the relationship between students' age and their computer proficiency. Activity theory was adopted as the theoretical framework to explain behavioural intentions of computer interactions. The study used self-answering questionnaires with closed-ended items to collect data from a group of teacher-trainees. A total of 1,500 questionnaires were distributed using a stratified sampling to select respondents. The data collected were analysed using simple means, frequencies, standard deviation, independent sample t-test, Chi-square test, and cross-tabulation. Findings from the study showed a significant difference of computer usage in level of proficiency by gender. The main findings are: 1 Younger students have higher computer proficiency skills as compared to the older students; 2. The students use computers for various activities including listening to music, playing games, researching, chatting, and e-mailing; 3. The students get access to educational resources including electronic journals, e-books, open educational resources (OER), educational digital video disk/compact disc (DVD/CD), and online databases; and 4. Male students have higher technology literacy skills than female students. The study recommended that efforts should be made to provide more access time to computing facilities to increase students' computer usage. There is a need to bridge the computer usage gap between male and female students. Older students should be encouraged to improve their technology literacy skills. Furthermore, the results suggested that the students used technologies within the objectivist model of teaching and learning. From the findings, teacher education programs need to provide teacher-trainees with further training programs to help them enhance their skills in the use of computers as an instructional tool for teaching and learning.  相似文献   
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