Grounded in Bronfenbrenner's (1979) Ecological Systems Theory and through the application of cross-classified random effects models, the goal of this study was to examine simultaneously neighborhood and school influences on adolescent academic achievement and risk of obesity, as well as the moderating effects of schools on these outcomes. By examining concurrently neighborhood and school influences on achievement and risk of obesity, this study aimed to fill gaps in the social determinants literature. For example, it is unclear if where an adolescent lives or where she/he attends school has a stronger influence on academic achievement. We also do not know if schools can moderate neighborhood influences on adolescent achievement, nor do we know much about the relationships among schools, neighborhoods, and adolescent risk for obesity. Using data from the National Longitudinal Study of Adolescent Health and the Adolescent Health and Academic Achievement study, four research questions were investigated: (1) To what extent are neighborhood influences on U.S. middle and high school students' academic achievement moderated by school environments? (2) What are the relative influences of neighborhood and school environments on U.S. middle and high school students' academic achievement? (3) To what extent are neighborhood influences on U.S. middle and high school students' risk of obesity moderated by school environments? (4) What are the relative influences of neighborhood and school environments on U.S. middle and high school students' risk of obesity? Findings did not suggest a moderating relationship between neighborhood and school factors examined in this study. In terms of relative relationships with academic achievement, three neighborhood factors (affluence, racial composition, and urbanicity) and two school characteristics (student body racial composition and school socioeconomic status) appeared to have the strongest relationships with adolescent achievement after controlling for individual and other neighborhood and school characteristics. For adolescent risk of obesity, neighborhood affluence and racial composition had statistically significant unique associations, whereas no school factors evidenced statistically significantly relationships with risk of obesity after controlling for other factors. Results of the study were interpreted in terms of contributions to the social determinants literature, as well as recommendations for the improvement of future large-scale surveys.

<p>The aims of the study were to: (1) explore the education support services required by three learners who were integrated into the mainstream, (2) determine the level of support required by these learners to function maximally in the mainstream, (3) specifically explore the socioemotional ability of these learners to adjust to the mainstream setting. Three cases were explored within an eco-systemic approach. Each case consisted of a learner with a physical disability, the learner&rsquo / s mother and the educator/s who first taught the learner at the mainstream school. Interviews were conducted with all of the participants and subsequently transcribed verbatim. Thematic analysis was then conducted to extract themes from the transcriptions.</p>

<p>Violence is considered to be one of the most critical and threatening global problems plaguing the world today, leaving a trail of devastating consequences to societies, economies, cultures, families and individuals (Desjarlais &amp / Kleinman, 1997). Adolescents who grow up in a context of violence learn distorted ways of thinking, acting, living and interacting. Aggressive tendencies and violent behaviour become internalised and adopted as acceptable ways to resolve conflict situations. Chronic, continuous exposure to violence results in physical, psychological and emotional disturbances, such as depression, anxiety, lowered self-confidence, sleep disturbances, decreased attention and concentration spans. This study addressed the form of violence known as community violence, i.e. violence that children experience within their communities (either as witnesses or as victims). This study investigated the effects of this negative environmental experience and investigated potential mediating and moderating variables that could influence the harmful effects of such experiences. The variables considered as mediating and/or moderating variables were social support and self-esteem. The theoretical framework adopted for this study was Bronfennbrenner&rsquo / s Bioecological Systems theory.</p>

<p>Violence is considered to be one of the most critical and threatening global problems plaguing the world today, leaving a trail of devastating consequences to societies, economies, cultures, families and individuals (Desjarlais &amp / Kleinman, 1997). Adolescents who grow up in a context of violence learn distorted ways of thinking, acting, living and interacting. Aggressive tendencies and violent behaviour become internalised and adopted as acceptable ways to resolve conflict situations. Chronic, continuous exposure to violence results in physical, psychological and emotional disturbances, such as depression, anxiety, lowered self-confidence, sleep disturbances, decreased attention and concentration spans. This study addressed the form of violence known as community violence, i.e. violence that children experience within their communities (either as witnesses or as victims). This study investigated the effects of this negative environmental experience and investigated potential mediating and moderating variables that could influence the harmful effects of such experiences. The variables considered as mediating and/or moderating variables were social support and self-esteem. The theoretical framework adopted for this study was Bronfennbrenner&rsquo / s Bioecological Systems theory.</p>

This thesis explores the influences of social networks and social support on the literacy engagement of 7 high school students from a multicultural, multilingual, and economically disadvantaged urban neighborhood in a large, diverse North American city. Specifically, this study describes (1) students’ social networks and social literacy interactions; (2) the types of social support the network relationships provide for participants’ literacy; and (3) the ways in which this socioliterate support might affect participants’ literacy engagement. Guided by Ecological Systems Theory (Bronfenbrenner, 1979, 1992/2005), at three times during an 18-month period the 7 participants completed social network maps and interviews, checklists about their reading and writing choices, and retrospective interviews about their reading and writing practices on self-selected texts. These data were analyzed on the basis of Tardy’s (1985) typology of social support and the tripartite model of engagement proposed by Fredricks, Blumenfeld, and Paris (2004), then individual case reports were created for each participant. For cross-case analysis (Stake, 2006), the individual reports were compared across similar, predetermined themes. Two primary conclusions are supported by the data and analysis: These adolescents received varying amounts and types of socioliterate support from certain members of their social networks, particularly teachers and family members, and this support positively influenced their literacy engagement when they were facing difficult or uninteresting tasks. The study provides an understanding of the relationship between social support, motivation, and engagement in single literacy events, including proposed relationships between these three concepts, as well as perspectives on the role of technology in adolescent social network formation and on the sources from whom adolescents seek literacy-based social support. The study describes pedagogical spaces that can provide and activate such literacy support and suggests topics for future research relating to adolescent literacy, socioliterate networks and support, and literacy engagement.

Glenda E. Koshy ABSTRACT This study examined factors related to the intent of special education teachers of students with Autism Spectrum Disorders (ASD) to remain in the profession. A modified Working in Schools: the Life of a Special Educator (WSLSE) survey, developed by Miller, Brownell, and Smith (1999), was utilized to explore the relationships between factors associated with Bronfenbrenner's Ecological Systems Model (1977) and the special education teachers' intention to remain in the field of teaching students with ASD. Bronfenbrenner's Ecological Systems Model (1977) includes the Microsystem, Mesosystem, Exosystem, Macrosystem, and the Individual domain. Multiple regressions conducted as the method of data analysis revealed that factors associated with the Exosystem, Macrosystem, and lastly, the Individual domain all had statistically significant relationships with the outcome of teachers' intent to remain in the field of teaching students with ASD. Additionally, it was found that there were individual predictor variables that had statistically significant relationships with teachers' intentions to remain in the profession. Specifically, the significant predictor variables were married, recognition, and relationships. Therefore, special educators who were married had a greater intent to remain in the field of teaching students with ASD. In addition, special education teachers who receive recognition more often as well as educators who have relationships with the parents of their students and with community agencies have greater intentions of remaining in the field of teaching students with ASD. Recommendations for policy makers as well as larger organizations and systems, including state and local education agencies, universities with teacher preparation programs, and K-12 public school systems are provided to assist in the development and implementation of programs designed to prepare and retain quality special education teachers of students with ASD

Anthropogenic global changes are altering properties and functions of social and ecological systems at multiple spatial and temporal scales. In addition to climate change, the Peruvian Southern Andes has also experienced dramatic political and social change. This dissertation addresses the responses of plants, humans, communities and sub-national governments to the impacts of these changes. Methods from both the social and natural sciences were used at three levels: 1) on the forelands of the Quelccaya ice cap a chronosequence approach was used and 113 quadrats (1m2) sampled the vegetation covering an altitudinal range from 5113 to 4830 m.a.s.l.; 2) with the households of herders in the Quelcaya community surveys, interviews, participant observation, and archival research were employed; and 3) with the three Regional Governments (Arequipa, Cusco, and Puno) interviews with officials and stakeholders were conducted. The results show an upward displacement of the elevational limit of plants and a trend towards homogenization of vegetation. Warming climate, a shortened rainy season, and longer dry and cold spells are the most relevant impacts of climate change in the study area. Responses to these changes occur within households, supra-household units and communities, through dynamic institutions, traditional knowledge, and flexible polycentric social organization. These responses originate from path dependencies generated by human-environment interactions in the Peruvian Southern Andes. For instance, pastoralists increased livestock mobility within their pastures, created wetlands through irrigation, and introduced agriculture of bitter potatoes. The women agriculturalists modified the productive calendar to adjust agricultural tasks to changes in the rainfall regime; they replaced maize for wheat and fava bean, because these crops are more resistant to cold spells. Agro-pastoralists increase institutional water governance and demand infrastructure to improve efficient water use. Synergies between local and regional adaptive responses to climate change may be led by projects like building irrigation infrastructure and strengthening local resource governance, although there are also disjunctions that limit adaption. Local social ecological systems are adaptive and resilient to multi-scale social environmental disturbances by a malleable forging of former strategies to face change, innovation, polycentric social organization, and a dynamic institutional body that promptly response to change. / text

Settlement services for immigrants are a relatively new phenomenon in Canada. There is a dearth of research examining the roles of settlement services in the transition process of immigrant youth. Drawn from Bronfenbrenner’s (1979) ecological systems theory, this interpretive qualitative study explores the experience of Asian immigrant youth who settled in Canada with the assistance of settlement services for youth. This study, conducted in Victoria, British Columbia, Canada, involved immigrant youth from China, Korea, and the Philippines, aged 15-24, who participated in semi-structured, audio taped interviews regarding the roles a local settlement services agency (the Victoria Immigrant and Refugee Centre Society) played in their transitions to Canada. Data were analyzed using an iterative thematic analysis approach. The findings contribute to understanding the ecological context of settlement experiences of youth and shed light on challenges and barriers that Asian immigrant youth may experience in smaller, predominantly white, urban centres such as Victoria. The study also yields insight about the impact of settlement services in the acculturative process of Asian immigrant youth. This research offers a theoretical framework that can informs the design of settlement programs and the delivery of programs in practice. The study also supports several recommendations for settlement services that may be useful for the particular agency and for settlement agencies in general. / Graduate

Irrigation plays an extremely important role in agriculture but climate change is predicted to modify climate patterns with potentially devastating consequences for irrigation. Potential impacts and adaptations are known, but not how implementation strategies may be implemented at the individual irrigation scheme level. Using a case study approach and qualitative research methods this thesis describes the Bwanje Valley Irrigation Scheme (BVIS), Malawi in order to explain how water is managed. Subsequently, historical adaptations are described in order to draw conclusions concerning the vulnerability of the BVIS under normal and extreme hydrological conditions. The BVIS is vulnerable in all conditions because it utilizes a common pool resource. As water supply decreases, irrigation water management becomes less and less equitable which makes the system extremely sensitive to changes in water supply. Capacity to adapt to climate change is limited to funding provided by external agencies which currently limit adaptations to reactive changes

<p>The aims of the study were to: (1) explore the education support services required by three learners who were integrated into the mainstream, (2) determine the level of support required by these learners to function maximally in the mainstream, (3) specifically explore the socioemotional ability of these learners to adjust to the mainstream setting. Three cases were explored within an eco-systemic approach. Each case consisted of a learner with a physical disability, the learner&rsquo / s mother and the educator/s who first taught the learner at the mainstream school. Interviews were conducted with all of the participants and subsequently transcribed verbatim. Thematic analysis was then conducted to extract themes from the transcriptions.</p>