A shool-based support programme for the intermedediate learner wuth depression This study is aimed at determining whether a school-based support programme can aid the intermediate learner with depression in decreasing his depression levels. It focuses on: the world of experience of the intermediate learner with depression; the role of the school as an overall health-promoting environment; and the creation of a school-based support programme for the intermediate learner with depression. The learner (the intermediate learner included) spends most of the day at school, so the educator can play an important role in identifying and following up problems and getting the school to function as a health-promoting environment. South African schools are focused mainly on primary and tertiary intervention, while secondary intervention reveals a serious deficiency. In the empirical investigation, 16 intermediate learners who were identified with depression were, involved in a purposeful convenience test sample by means of the CDI questionnaire. There was an experimental and a control group of eight members respectively. According to the results of the pretestposttest, the school-based support programme in which the experimental group participated caused their depression levels to decrease significantly. The need for a school support programme for the intermediate learner with depression was validated from this point of view. / Thesis (Ph.D. (Education))--North-West University, Vaal Triangle Campus, 2005.

The purpose of this study was to determine, by means of a review of literature and empirical research, the impact of dietary interventions on the classroom health promotion of Foundation Phase learners with ADD. In order to reach this goal, it was imperative to illustrate the meaning of the concepts health, wellness, health promoting schools, nutrition and Attention Deficit Disorder (ADD). The objective of the empirical research was to determine whether dietary interventions would promote the health of Foundation Phase learners with ADD in the classroom by focusing on decreasing their levels of hyperactivity, increasing their concentration and improving their social behaviour. In conclusion, the following are some of the findings of this study. Dietary interventions impacted positively on: the hyperactivity level of participating foundation phase learners with ADD in the classroom; the ability of participating foundation phase learners with ADD to concentrate in the classroom; and the social behaviour of participating foundation phase learners with ADD in the classroom. / Thesis (M.Ed.)--North-West University, Vaal Triangle Campus, 2005.

The main focus of this study was to explore how personal constructions, consisting of latent and conscious schema, and obtained from a culturally sensitive interpretation of the RCS, informed the transactional resilience of Black South African adolescents. This study was motivated in view of limited knowledge available about the (i) processes that are generic to the resilience-promoting transactions of Black South African adolescents and (ii) to potentiate insight into an adolescent’s construction of personal meaning of her conscious and unconscious experiences that may not always be easily recognised in her overt behaviour or by self-report measures often used in South African resilience research. Six Black South African adolescents aged 14 to 16 years volunteered to take part in this multiple case study. The participants were identified as resilient by an advisory panel consisting of learners and educators at an English-medium school in the Vaal Triangle area. In this essentially qualitative study, qualitative data obtained from an unstructured individual interview, unstructured observations, and a follow-up interview were integrated with the data obtained from a culturally sensitive, conceptual interpretation of these Black adolescents’ Rorschach protocols. The structural, quantitative data obtained from specific indicators in Exner’s Comprehensive System were interpreted in a culturally sensitive manner and integrated with the qualitative data obtained from the Rorschach protocols. A culturally sensitive, conceptual framework for interpreting Rorschach indicators associated with adolescents’ transactional resilience was provided. These findings indicated individual and ecological protective resources well known within South African resilience research. Findings that contributed new understanding of the transactional processes associated with Black South African adolescent resilience were also obtained. Four case-specific self-reflective strategies were identified, namely, emotional stoicism, frequent introspection, honouring the past, and adopting a new identity. These selfreflective strategies served as the participants’ unique ways of compensating for their adversity-informed schema as well as encouraging them to navigate towards the sustained support of specific significant others and resilience-promoting ecological resources. The participants indicated that attachment challenges brought about repressed feelings and specific security needs, which shaped their resilience-promoting navigation and enabled them to self-knit in a resilient way. / Thesis (Ph.D. (Education))--North-West University, Vaal Triangle Campus, 2011

The application of seaweed concentrates to plants has been shown to enhance growth and improve yield parameters. How these natural products elicit their beneficial responses is still unclear. While many of the growth responses have been attributed to cytokinins, it is obvious that this group of plant hormones cannot account for all the beneficial effects incurred from seaweed use. This study was therefore initiated to investigate the effects of a commercial seaweed concentrate (Kelpak) on several aspects of plant growth and development. Tentative determination of plant growth regulators in the seaweed concentrate (SWC) using bioassay systems, indicated the presence of compounds with gibberellin- , abscisic acid- and auxin-like properties. Tentative identification of the auxins present in the SWC and Ecklonia maxima using High Performance Liquid Chromatography revealed the presence of tryptophan, indole-3-acetamide, indole-3- acetic acid, indole-3-carboxylic acid and indole-3-acetaldehyde. The effect of SWC on the growth of nodal potato explants cultured in vitro was examined. 0.2% SWC significantly accelerated shoot growth and development. When applied at a concentration of 0.4% the number of axillary shoots per node increased. This treatment also stimulated the development of potato tubers on the shoots. The SWC was also shown to enhance the growth of tomato (Lycopersicon esculentum Mill.) roots cultured in vitro. Filtration of the SWC indicated a promotory filtrate phase and an inhibitory cell wall phase. ' The application of the SWC to nematode-infested roots, cultured in vitro, reduced the degree of infestation In susceptible roots but induced host/parasite compatibility in a resistant variety. One of the most pronounced effects noted with seaweed application was the promotion of adventitious roots on several species of garden plants. The application of similar dilutions to Eucalyptus cuttings increased the average root mass but had little effect on the number of roots initiated per cutting. The rooting factors, purified by HPLC, were tentatively identified as indole-3-acetamide, indole-3-acetic acid, indole-3-carbo. xylic acid or indole-3-acetaldehyde by co-chromatography with authentic standards. Finally, the effect of seaweed concentrate on the growth of tomato plants grown in nematode-infested soil was investigated. SWC applied as a soil drench, improved plant vigour, significantly increased shoot and root fresh weights and resulted in a marked reduction in the number of nematode galls per unit length and per unit weight of root. Plants treated with a foliar spray of SWC were invariably the first to produce ripe fruit. Total yield was improved by over 10%. Ashing the SWC indicated that the active constituents are possibly of an organic nature. Filtering the SWC confirmed earlier reports that promotory and inhibitory compounds are present in the concentrate. Chromatographic separation of the SWC into 10 Rf zones indicated the presence of several components with growth regulatory properties. It was found that the same fractions that improved plant growth also reduced nematode infestation. The significance of these findings and the possible relationship between the endogenous plant growth regulators in Ecklonia maxima and the effect of the SWC on plant growth is discussed. / Thesis (Ph.D.)-University of Natal, Pietermaritzburg, 1990.

The spindle assembly checkpoint (SAC) is an evolutionarily conserved mechanism that delays the initiation of anaphase by inhibiting the Anaphase Promoting Complex (APC) until all kinetochores have achieved bipolar attachment on the mitotic spindle. Mad1-3, Bub1, and Bub3, components of the SAC, are conserved from yeast to humans. These proteins localize to unattached kinetochores, though it is unknown with which kinetochore proteins they interact and how these interactions transduce information about microtubule attachement. Here, purification of the checkpoint proteins from Saccharomyces cerevisiae suggests that Mad1 interacts with the outer kinetochore protein Ndc80 in a SAC, cell cycle, and DNA dependent manner. Ndc80 is thought to mediate attachment of kinetochores to microtubules so the interaction between Mad1 and Ndc80 suggests a mechanism by which cells sense kinetochore-microtubule attachment. The SAC is of special importance in some types of cancer where genetic damage and aneuploidy is correlated with mutated SAC genes. A better understanding of the SAC mechanism will aid in the development of targetted cancer therpeutics.

A call for parents to be involved in the education of their children is not a modern phenomenon at all. It is increasingly a call which invites parents to be involved in every sphere of their children‟s lives, including their health. Children of South Africa, like many other children in Africa, are engulfed with health issues. These problems range from drug abuse, teenage pregnancy, obesity, violence, suicide, alcohol, etc. Therefore, it is crucial to engage parents in an effort to promote the health of their children in school and together with schools. Various parental roles were established during the early part of the century when parents were obliged to raise their children according to the set standard. As time went by, schools clearly drew a line to distinguish their role from parents‟ roles. Later on a need for parental involvement in schools arose again and a call for parents to attend to their obligations was a necessity, although parents were seen as problems by teachers. This allowed a space for barriers to grow between parents and teachers to such an extent that there was no collaboration in addressing problems affecting children in schools. To investigate the issue of parental roles and health promotion in schools thoroughly, qualitative measures were applied. The analysis indicated that there is indeed a great need for parents to be involved in promoting the health of their children in schools. However, a lack of knowledge amongst parents and a lack of skills to work with parents amongst teachers hamper the possibility of preventing most of the health issues affecting many children of South Africa. Indeed parental participation in schools and health promoting schools can yield positive results not only for the children, but for the schools and parents as well. Therefore, the government must employ practical strategies to involve parents in promoting the health of children in schools. / Thesis (M.Ed.)--North-West University, Potchefstroom Campus, 2011

The purpose of this research was to implement and evaluate a whole-school health model (Health Promoting Secondary Schools [HPSS]), grounded in self-determination theory (SDT). The approach used a "For Youth with Youth" planning strategy designed to change school environments (culture, policy and practices) in order to help high school students become more physically active and eat more healthful diets. Three interrelated research projects were conducted to address the purpose of this study. A concurrent mixed-methods design was used to: (a) gain an understanding of the experiences of teachers and the Action Team as they planned and implemented school-based healthy living strategies (Project 1); (b) evaluate the impact on and relationship between SDT constructs and students’ motivation to engage in health-related behaviours (Project 2); and (c) evaluate the motivation of students in physical education classes grounded in SDT and its impact on their enrolment in grade 11 elective physical education (Project 3). In Project 1, 23 teachers and 37 Action Team members participated in focus group interviews. School observation field notes and Action Team meeting minutes were collected throughout the intervention process. Analysis of the data revealed that several factors were associated with participants’ experiences and motivational processes. These factors included: (a) Competing Responsibilities, Technical Difficulties, and Lack of Computer Access (b) Resources, Reminders, Workshops, and Collaboration (c) Choice-Based Design Impacts Participants’ Experiences; (d) Teacher Control Impacts Student Engagement (e) Teacher Job Action Inhibited Implementation of HPSS Action Plans. The findings from this study can facilitate future school-based projects by providing insights into student and teacher perspectives on the planning and implementation of a whole-school health model. In Project 2, 379 grade 10 students in ten participant schools (5 intervention schools; 5 control schools) completed self-report questionnaires pre and post intervention to evaluate the impact on students’ motivation to engage in health-related behaviours. Results showed students attending HPSS intervention schools reported significantly lower amotivation scores for healthy eating compared to students in usual practice schools. No significant differences were found between conditions on motivation towards physical activity. The findings indicate that a choice-based whole-school health approach may be an effective approach for decreasing amotivation towards healthy eating behaviours. In Project 3, a sample of 373 grade 10 students completed self-report questionnaires to assess their perceptions of autonomy, relatedness, and competence towards grade 10 Physical Education. Enrolment rates were collected from participant schools to determine the impact of the HPSS intervention on student enrolment in grade elective physical education. Multilevel analysis showed no significant differences between conditions post intervention on overall psychological need satisfaction or individual SDT constructs. For enrolment in elective physical education, chi-square analyses showed a significant difference in proportion of female students in HPSS intervention schools enrolled in grade 11 elective physical education. Findings show support for a whole-school health model to improve female student enrolment in elective physical education programs. / Graduate

Thirty-two isolates of rhizosphere bacteria, selected for their ability to inhibit zoospore germination and/or mycelial growth of Pythium aphanidermatum (Pa) in vitro, were evaluated in a test tube bioassay using cucumber c.v. 'Straight 8'. These isolates were identified as Psedudomonas corrugata (Pc13 or 35) and P. fluorescens (Pf15, 16 or 27). All but one of the five isolates effectively colonised the roots of cucumber plants in short term studies. Isolates 15 and 35 were found to maintain high population densities throughout the time period. Pa-inoculated plants treated with the Pc13 or Pf15 produced fruit yields equal to 92 and 74% respectively of the control (no Pa, no bacteria). Pa-inoculated plants without bacteria yielded only 46% of the control. In the fall crop, Pa-inoculated plants treated with Pc13 or Pf15 yielded 52 and 47% of the control compared to Pa-only treatment, which yielded 12.5% of the control. In both crops, treatment with any of the bacterial isolates resulted in significantly reduced cull rates compared to the Pa-only treatment.

Despite having been endorsed by the World Health Organisation (WHO) almost a decade ago, and its widespread adoption as a model of "best practice" for school health promotion throughout the world, the Health Promoting Schools framework has not been subjected to widespread evaluation in a way that fully recognises its core tenets. Most evaluations have focused on individual targeted interventions addressing students' health behaviours, or implementation issues such as school health policies or access to services. No evaluations of this approach could be found which investigated the impact of the HPS model on teachers, as a critical factor influencing the school climate, or on organisational processes associated with employee wellbeing within the school setting. There is a vast literature pertaining to conditions of the work environment that affect employee health, including work-related stress. Teaching is considered a highly stressful occupation, and as social pressure continues to place teachers and schools in the role of "in loco parentis" for the socialisation of children, it seems timely to identify those characteristics of the school environment that promote positive health and wellbeing for all. In theory, the HPS model provides a set of principles and procedures that aim to promote health and wellbeing for all members of the school community, yet the impact on school staff has yet to be demonstrated. This thesis reports on research investigating the extent to which adoption of the HPS approach creates a positive work environment for teachers, through enhanced organisational and social capital, and whether selected work environment variables impact on teachers' physical and mental wellbeing, health risk behaviours, job stress, and job commitment. After conducting a statewide audit of health promotion activities in Queensland primary schools, two samples of schools that differed significantly in the extent to which they were implementing organisational strategies consistent with the HPS approach were selected, one sample of 20 schools actively implementing HPS strategies, and a comparison sample of 19 schools not implementing the approach. Schools were matched on geographic location (rural/urban), school size (number of student enrolments), and socio-economic rank (IRSED). A cross-sectional design using a mail-out survey to 1,280 teachers was conducted, and statistical comparisons of the two groups were conducted. Apart from providing the samples of schools for the main research, the statewide audit provided a profile of health promotion activity in Queensland primary schools. Urban, rather than rural schools, and those with higher student enrolments, were most frequently implementing HPS strategies. Socio-economic ranking did not have any statistical bearing on adoption of these strategies. Implementation of school health policies was the most common strategy, although the social and physical environments were also addressed to some extent. The instrument designed for the study, the HPS Audit Checklist, proved effective in distinguishing a continuum of HPS "total scores" and demonstrated good psychometric properties. With respect to differences in measures of the school environment, mean scores for all 11 dimensions of school organisational health, and all 4 dimensions of school social capital, were statistically higher in High HPS, although differences between the two groups were not outstanding. Trends in the results did, however, confirm that schools actively adopting a HPS approach provide a more positive work environment than non-health promoting schools. Effect size was most significant for School Morale, Decision Authority, and Co-worker Support. Both organisational and occupational commitment was higher for teachers in High HPS, and Turnover Intention (plans to leave the workforce/workplace) was lower for teachers in High HPS. Teachers in High HPS reported less job strain and higher skill discretion, despite slightly greater job demands (work pressure) in these schools. They also reported significantly less general psychological distress on 5 measures, and significantly better self-rated mental and physical health. Job strain was most strongly associated with co-worker support, appreciation, and school morale in High HPS, but in Low HPS strain was most strongly associated with leadership style, school morale, and role clarity, suggesting more subtle differences between the two sets of schools. No statistically significant differences were found between teachers in High and Low HPS on self-reported weight, daily dietary habits, dental check-ups, preventive health screenings, alcohol consumption, smoking, cholesterol, BP and exercise. Although this research was limited by its dependence on self-report measures, the high response rate suggests that the results provide a valid profile of the health and psychological wellbeing of teachers in Health Promoting Schools in Queensland. These results also suggest that the HPS approach creates a more positive school environment through building social and organisational capital, and this is reflected in better mental health and stronger job commitment of the teaching workforce. Implications of these results for human resource management within the education sector are discussed. In addition, the implications of a healthier "learning environment", including less stressed and more connected teaching staff, for children's psychosocial and educational outcomes are considered in light of potential future directions for this research.

School connectedness, defined as the cohesiveness between diverse groups in the school community, including students, families, school staff and the wider community, is a well-documented protective factor for child and adolescent health. However, strategies for promoting school connectedness are less well known. The Western Gateway Health Promoting Schools Grant Scheme is a program that aims to increase school connectedness by using the health promoting school approach in disadvantaged communities in South-East Queensland, Australia. The scheme provides an opportunity for schools to apply for funding to implement strategies that increase students' sense of school connectedness, using a Health Promoting School approach. Evaluation of the Western Gateway Health Promoting School Grant Scheme provided an opportunity to investigate the influence of the health promoting school approach on school connectedness. The influence of the health promoting school approach on school connectedness was evaluated using a qualitative case study methodology. Three school communities were investigated as single, related case studies to examine the impact of the health promoting school approach on school connectedness. A conceptual framework, based on the theoretical understanding of how the health promoting school approach influences school connectedness, was developed and used as a guide to investigate the relationships within the case study schools. The health promoting school model, which is a 'settings' approach to health promotion, has the potential to promote school connectedness as it is based on the inclusive, participatory, and democratic principles shown to be necessary for the development of social connectedness at the broader community level. The model illustrates this potential through two mechanisms 1) processes that are characterised by the inclusion of a diverse range of members that make up a community; the active participation of community members and equal 'power' relationships, or equal partnerships among community members; and 2) structures such as school policies, school organisation and the school physical environment, that reflect the values of participation, democracy and inclusion andor that promote processes based on these values. These processes and structures, which are located both in the classroom and within the broader school environment, collectively hold the potential to promote connectedness in the school setting. Data on these relationships were collected using in-depth interviews with representatives of groups within the school community such as school staff, parents, students, health service and community agency workers. Additionally, student focus groups and documentary evidence, such as school program reports and observations of health promoting school activities were used in the collection of data. Data sources were triangulated to gain a complete understanding of the impact of the health promoting school approach on school connectedness. Data analysis was conducted by categorising the data into themes and categories based on, but not limited to, the conceptual framework that guided data collection. Data display matrices enabled theoretical relationships between the health promoting school approach and school connectedness to be drawn. The results of the in-depth qualitative evaluation of the program show that the health promoting school approach influences school connectedness through the mechanisms of a 'whole-school approach' that encourage interaction between members of the whole school community. Specific activities that promoted school connectedness were 'whole school' activities that celebrated the school community, for example, the launch of a school cafd and 'whole-class' activities where students and school staff work together towards a shared goal, such as the planning of a school breakfast tuckshop. Activities that encouraged links between classes and school staff in a school community, for example, shared curriculum planning in the co-ordination of a school breakfast tuckshop program also contributed to school connectedness by promoting interaction among school community members. Health promoting school structures and processes help to develop mutual reciprocal relationships characterised by school community members getting to know others better and developing care and support for each other, which in turn develops into other indicators of school connectedness, such as tolerance of diversity, perceptions of being valued, trust, perceptions of safety, and decreased absenteeism. A key element of health promoting school structures and processes that enables the formation of these relationships is the inclusive nature of the approach, which encourages school community members to participate in the school community. This encourages the formation of mutual reciprocal relationships. A number of elements of the health promoting school approach encourage participation in the community. For example, the formation of mutual, reciprocal relationships requires activities that are economically inclusive, and characterised by a social, positive, fun or celebratory element; that are informal and well-managed. Specifically, events characterised by eating food together; real-life activities; activities the school community 'owns' by having a say in them; and activities that involve school community members working together are important for the development of mutual reciprocal relationships. These elements occur at the level of the school and the broader school community interactions, as well as at the level of the class and interactions between classes within the school. In summary, this research provides evidence that the health promoting school approach is an effective model to influence school connectedness, which in effect promotes the health and well-being of children and adolescents.