Physical activity, nutrition, screen time and sleep associated with body weight and physical condition in young children

The aim of this cross-sectional study was to explore the possible relationship between (un)healthy behaviour and (over)weight and physical condition in families with young children (4–7 years), in a village (30,000 inhabitants) in the eastern part of the Netherlands, close to Germany. It is one of two pilot studies as a precursor of a cross-border project including six Dutch and six German villages, to counteract physical inactivity and possible future metabolic problems. In total, 459 children of five elementary schools and their parents were included. Parents were requested to fill in a questionnaire on the nutritional, physical, sedentary, and sleeping behaviour of their child. Relevant background characteristics were obtained and lifestyle classifications were made. At school, the children's height and weight (body mass index (BMI)) were measured, as well as their physical condition (two tests) and basic motor abilities (four physical exercise tests). The relationship between the standardized BMI z-scores and physical condition test scores, and nutritional, physical, sedentary and sleeping habits was analysed using independent sample t-test, bivariate correlation analysis and multiple regression analysis. Latent class analysis was used to identify clusters of people based on their nutritional, physical and sleep habits. Of the parents, 376 (82?%) were willing to fill out the questionnaire. High birth weight and a high BMI of the mother and/or father correlated with a higher BMI of the child (ρ?=?0.28, p?<?0.001; ρ?=?0.13, p?=?0.016; and ρ?=?0.23, p?<?0.001, respectively). Daily playing outside, eating small cookies (compared with large cookies) and no sleeping problems (no waking up during the night) were related to low BMI levels (no overweight) [ρ?=???0.14, p?=?0.005; ρ?=???0.12, p?=?.020; t(364)?=?1.81, p?=?0.072 (trend), respectively]. Daily playing outside (frequency and duration) and being a member of a sports club were related to positive scores on the physical condition tests [ρ?=?0.20, p?<?0.001; t(365)?=???2.99, p?=?0.003, respectively]. High levels of television (TV) watching and general sleeping problems were related to a less optimal physical condition [ρ?=???0.09, p?=?0.076 (trend); and ρ?=???0.10, p?=?0.059 (trend), respectively]. A latent class analysis revealed three clusters: 46?% of the sample belonged to the ‘healthy group’ concerning nutrition, sedentary lifestyle and TV/personal computer (PC) use; 17?% to the ‘less healthy’ group and 37?% to a group with nutrition and physical activity habits close to the healthy group, but with low conditional probabilities for the sleeping items. Conducting a pilot study before the start of a binational intervention study gives a blueprint for the final questionnaire, and clues for tailored interventions in the schools, as proposed in the approach of ‘Gesunde Kinder in gesunden Kommunen’ (GKGK). The results of a latent class analysis underscore that interventions should exist of a multi-component strategy, focusing on promoting physical activity, healthy nutrition habits and appropriate sleep.     

On the Ruled surfaces in Minkowski 3-space R1^3

INTRODUCTIONLet ú3={(x1,x2,x3)|x1,x2,x3∈ú} be a 3D vector space, x=(x1,x2,x3) and y=(y1,y2,y3) be two vectors in ú3. The pseudo scalar product of x and y is defined by     

COBRA framework to evaluate e-government services: A citizen-centric perspective

E-government services involve many stakeholders who have different objectives that can have an impact on success. Among these stakeholders, citizens are the primary stakeholders of government activities. Accordingly, their satisfaction plays an important role in e-government success. Although several models have been proposed to assess the success of e-government services through measuring users' satisfaction levels, they fail to provide a comprehensive evaluation model. This study provides an insight and critical analysis of the extant literature to identify the most critical factors and their manifested variables for user satisfaction in the provision of e-government services. The various manifested variables are then grouped into a new quantitative analysis framework consisting of four main constructs: cost; benefit; risk and opportunity (COBRA) by analogy to the well-known SWOT qualitative analysis framework. The COBRA measurement scale is developed, tested, refined and validated on a sample group of e-government service users in Turkey. A structured equation model is used to establish relationships among the identified constructs, associated variables and users' satisfaction. The results confirm that COBRA framework is a useful approach for evaluating the success of e-government services from citizens' perspective and it can be generalised to other perspectives and measurement contexts.     

The role of educational experiences in the development of deaf identity

In this study, the analytical educational experiences of 25 deaf adults are explored in relation to their identity. The qualitative analysis indicated that the most critical educational experiences for the participants' identity concerned their interactions with hearing or deaf peers and their language of communication with their peers at school. The participants with a hearing identity attended general schools, where they interacted with hearing peers in Greek, whereas the participants with a Deaf identity attended schools for the deaf, where they interacted with deaf peers in Greek Sign Language. The participants with a bicultural identity attended general schools, where they interacted with hearing peers in Greek, but they also had the chance to meet Deaf role models outside school, which played a critical role in the development of their identity.     

A Meta-analysis of the Impact of Social and Emotional Learning Interventions on Teachers’ Burnout Symptoms

Educational Psychology Review - Over the last decades, extensive research has given considerable attention to teachers’ burnout. Owing to its negative personal, organizational, and social...     

Child sexual and physical abuse among college students in Singapore and the United States

OBJECTIVES: The purpose of this study was to explore differences in rates and characteristics of child sexual and physical abuse experiences among women in Singapore and the US. METHOD: Participants (N=153) completed an anonymous questionnaire which assessed experiences of childhood sexual and physical abuse, abuse characteristics (e.g., victimization age, severity), and behavioral and subjective reactions to such experiences (e.g., labeling of experiences as abuse, psychological symptomatology). Exposure to other forms of traumatic life events was also assessed. RESULTS: In comparison to Singaporean women, US women were more likely to report a history of child sexual abuse, and to report experiencing more severe forms of sexual abuse. Women in Singapore were more likely than women in the US to report a history of child physical abuse, to report experiencing injury as a result of the abuse, and to disclose the abuse. Singaporean women with a history of child sexual abuse reported elevated psychological symptom levels relative to their nonabused peers and to US women with a history of child sexual abuse, even after controlling for exposure to other types of traumatic events. No significant differences in symptomatology with regard to child physical abuse were observed. CONCLUSIONS: Although preliminary in nature, the present findings are among the first to demonstrate differences in psychological adjustment between sexually abused and nonabused Asian women living in Asia. This study also provides some of the first support for cross-national differences in the psychological adjustment of child sexual abuse survivors.     

Learning through collaboration: student perspectives

This research examines the effectiveness of collaborative learning pedagogies from the perspective of students. There is a rich history of research on collaborative learning demonstrating the effectiveness and this has led to indexing educational quality by student engagement. However, the findings from this study question the efficacy of collaborative pedagogies in their actual implementation. While collaboration was a part of the most highly rated learning experiences, these pedagogies were typically described as ineffective. Key factors that students see associated with effective collaboration are reported. The students’ perceptions of learning as reflected in their comments on collaborative learning, implications for setting expectations for college learning, and needs for faculty development are discussed.     

The effects of Common Knowledge Construction Model sequence of lessons on science achievement and relational conceptual change

The purpose of this study was to investigate the effects of the Common Knowledge Construction Model (CKCM) lesson sequence, an intervention based both in conceptual change theory and in Phenomenography, a subset of conceptual change theory. A mixed approach was used to investigate whether this model had a significant effect on 7th grade students' science achievement and conceptual change. The Excretion Unit Achievement Test (EUAT) indicated that students (N = 33) in the experimental group achieved significantly higher scores (p < 0.001) than students in the control group (N = 35) taught by traditional teaching methods. Qualitative analysis of students' pre‐ and post‐teaching conceptions of excretion revealed (1) the addition and deletion of ideas from pre‐ to post‐teaching; (2) the change in the number of students within categories of ideas; (3) the replacement of everyday language with scientific labels; and (4) the difference in the complexity of students' responses from pre‐ to post‐teaching. These findings contribute to the literature on teaching that incorporates students' conceptions and conceptual change. © 2009 Wiley Periodicals, Inc. J Res Sci Teach 47: 25–46, 2010     

THE EFFECTS OF COGNITIVE CONFLICT MANAGEMENT ON COGNITIVE DEVELOPMENT AND SCIENCE ACHIEVEMENT

Three teaching methods were compared in this study, namely a Cognitive Conflict Management Module (CCM) that is infused into Cognitive Acceleration through Science Education (CASE), (Module A) CASE without CCM (Module B) and a conventional teaching method. This study employed a pre- and post-test quasi-experimental design using non-equivalent control groups. The design involved 130 participants from Form 2 (Grade 7) in a Malaysian secondary school. The cognitive level of all participants was classified as non-formal operational on the pre-test and were allocated to one of the four intact groups: experimental group 1, EP1 experienced Module A, experimental group, and EP2 experienced Module B, while the others were divided between two control groups. The impact of the three teaching methods on the level of cognitive development and science achievement were observed after a 20-week intervention. Data were analysed using multivariate analysis of variance/multivariate analysis of covariance, analysis of covariance and a paired-samples t test. It is hoped that this study can contribute to knowledge in the field of cognitive intervention and cognitive conflict strategy. The findings show that a high dose of cognitive intervention in CASE activities within a short period has an effect on the levels of students’ cognitive development, standard science achievement and constructive cognitive conflict.     

Deaf clubs today: do they still have a role to play? The cases of Cyprus and Greece

The present study investigated the current functions of Deaf clubs in Cyprus and in Greece. The researchers conducted in-depth semistructured interviews with 24 Cypriot and 22 Greek deaf individuals ages 19-54 years. The researchers found that the Deaf clubs in both countries provide a gathering place for deaf people, organize social and sport activities, and promote their demands through legislation. In addition, Deaf clubs maintain and transmit Deaf culture and history to future generations, offer Deaf role models to young deaf children and their families, and provide Deaf awareness to hearing people (e.g., through sign languages classes). The study participants also stressed the role of Deaf clubs in deaf people's lives, unity, and prospects for future progress.