The first main goal of this research is to develop comprehensive analytical and numerical models for the stress distribution around an inclined cased wellbore by considering all wellbore processes and to amend erroneous models of most previous work. The second main goal is to apply the developed models to explain near wellbore phenomena such as cement failure and sand production. To achieve these goals, this work checked the eligibility of using simple elastic approaches for the system by using a poroelastic undrained condition and a steady state condition for stresses induced by wellbore temperature variation. It utilized the generalized plane strain to compensate for the limitation of the plane strain which most previous work had used. In addition, this research developed comprehensive models to improve previous work by using superposing principles. For applying the developed models to cement failure, Mogi-Coulomb criterion for shear failure instead of Mohr-Coulomb and Drucker-Prager criteria was used to properly consider the intermediate stress. Additionally, ABAQUSr was utilized for numerical models with the "model change" option to simulate and combine all individual wellbore processes while MATLABr was used for analytical models. For predicting sand production, fully coupled poroelastic solutions for an inclined open wellbore were modified to obtain the stress distribution around a perforation tunnel after perforating. Then, modified Lade failure criterion was used to calculate the critical drawdown when sand production occurs, that is, when the perforation tunnel starts failure. This research obtained the following results. For developing models, the analytical models improved the previous research. However, the numerical results under a vertical tectonic stress showed discrepancies because of the difference between the generalized plane strain and numerical models. For cement failure, Young's modulus of cement, wellbore pressure and wellbore temperature variation could affect shear failure more significantly than the other factors. The numerical results showed closer to the failure envelopes than the analytical results. For predicting sand production, well completion affected sand production near wellbore and the critical drawdown converged to asymptotic values. In addition, perforating along the minimum horizontal stress direction was most preferable in a vertical cased wellbore under a normal stress regime. / text

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Research suggests that belonging to multiple group memberships before and after life transitions promotes resilience by helping people maintain their well-being compared to those with fewer group memberships. Although group memberships are of key importance for well-being and adjustment to change, the influence of athletes’ group memberships on their well-being remains largely unexplored, despite the numerous transitions they face in sport. Furthermore, no research to date has assessed the effects of group memberships on performance, and little research has assessed the potential mechanisms through which group memberships produce beneficial effects on outcomes. These ideas were explored in this thesis. Two studies within this thesis adopted a longitudinal approach, using questionnaires to examine the effects of players’ group memberships on well-being after a sporting transition. Study 1 focused on team and club transitions for university students and measured changes in well-being across a three month period; Study 2, focused on programme transitions in elite cricket and measured changes in well-being across a two year period. Study 2 also examined whether the beneficial effects of group memberships extended to performance. Both studies demonstrated that players with multiple group memberships before and after transition generally experienced greater well-being after transition. Study 2 also showed that multiple group memberships had beneficial implications for performance. However, when the recency of the transition was taken into consideration, significant interactions between group memberships and time since the transition generally revealed that the beneficial effects were most pronounced for those who had recently transitioned into the clubs, teams, and programmes. Furthermore, both studies revealed that players with multiple group memberships before a transition were better able to maintain these group memberships across the transition (i.e., lose fewer groups) and more likely to identify highly with the new club, team, or programme (i.e., join new groups). Although Study 1 failed to uncover evidence of the processes underpinning these effects, Study 2 provided some evidence that identification with the new group, and (to a lesser extent) personal identity strength, appeared to be important potential mediators of the group membership effects. In Study 3, an experimental approach was employed to investigate whether changing athletes’ group memberships is associated with improvements in performance and persistence in a golf-putting task. To do this, the study manipulated the number of group memberships participants reflected on (i.e., control, one, or five groups) and assessed the effects this had on their performance and persistence (as an indicator of resilience). Results revealed that participants who were asked to reflect on five groups that they belonged to showed a greater improvement in their performance after receiving the group manipulation than those who reflected on one group and those in the control group condition. Furthermore, those who reflected on groups they belong to (whether one, or five) showed more persistence following false failure feedback than those who did not. Although potential mediating mechanisms were measured, there was no evidence that any of these processes accounted for the beneficial impact of group memberships. Overall, the results from this thesis demonstrate that multiple group memberships can promote resilience by making important contributions to athletes’ well-being, performance, and persistence. Thus, athletes should be encouraged to increase the number of group memberships they belong to as this may provide an important psychological resource during times of change.

Master of Science / Department of Psychological Sciences / Clive J. Fullagar / The current study examines how leaders craft conditions of the workplace to make it more conducive for flow to occur in their followers and what beneficial effects this has on employee well-being and performance. Data from 43 employees surveyed daily over two work weeks suggested that transformational leaders and leader-member exchange relationships impact several workplace conditions that in turn impact flow. Also, daily flow experiences were related to daily psychological well-being and daily performance.

Doctor of Philosophy / Department of Family Studies and Human Services / Martin Seay / Retirement savings and income projections are among the most financially complex calculations individual Americans will encounter. The movement towards self-directed employer retirement plans has shifted the responsibility for securing an adequate retirement increasingly to the employee, who may lack the financial understanding needed for proper calculations and decisions. There is an expressed preference among employees for the delivery of financial education in the workplace, where a majority of their financial knowledge is obtained. However, adoption of workplace comprehensive financial education programs has been slow due to the cost, time commitment, and lack of empirical support for their value. While there have been some mixed findings, literature has generally supported associations between financial education programs and improved literacy and behaviors. A great deal of these mixed results can be explained by the lack of consistency among definitional frameworks for financial literacy, the lack of consistent measures, and the variety of topics and methods used, all of which limit the ability to establish causal support for the educational program’s effectiveness. However, the preference for financial education in the workplace among employees suggests both the need and desire for more comprehensive financial education offered by employers. The purpose of this research was to investigate and test the links between the components in the framework for financial literacy by testing participation in a worksite comprehensive financial education program. In Essay One, the link between financial education and change in financial literacy was tested. Essay Two tested the link between the financial education program and financial well-being. In Essay Three, the link between financial literacy and financial behavior was explored. The results indicated associations between all three links in the financial literacy model, utilizing both primary research employing quasi-experimental methods, and secondary research from a larger national data sample. For financial educators who are interested in developing and facilitating comprehensive financial education programs for employee or other groups, this research can help provide support and guidance for those efforts. If comprehensive financial education programs can be better positioned to help improve the levels of financial literacy among Americans, fewer negative associated behavioral effects, such as lack of planning and under saving for retirement, may occur.

The purpose of this dissertation was to explore the experiences of sixteen Sub-Saharan African post-secondary students, and how they were able to succeed in spite of tremendous odds. The study was also designed to investigate ways to enhance educational attainment among recent immigrant students in Canadian schools and universities. The study was dedicated to advancing the understanding of recent immigrant students, from Sub-Saharan Africa, who had faced life challenges and multiple traumas. With a focus on their well-being, the development of this new knowledge will help policymakers and educators to develop strategies to enable culturally, linguistically, and socio-economically diverse students to reach their potential in their new country. The students selected for the study were resilient individuals who were seen as successful. Success stories of immigrant students from Sub-Saharan Africa who had overcome turmoil in their lives were investigated. These were newcomers to Canada who had succeeded against all odds both in Africa and Canada. This study was based on the premise that in a community all individuals may have access to the same resources, but unlike others, some individuals manage to overcome the problems that confront others (Pascale et al., 2010). These individuals are unique in their communities and their outcomes have deviated in a positive way from the norm (Pascale et al., 2010). The practices and insights of sixteen Sub-Saharan African students that had proven to be the key to their resilience and success were described from in-depth interviews. Further understandings were derived from structured narrative analysis. Using a qualitative research approach, this study developed insights into: the factors that hinder or enhance educational attainment and well-being among students; the perceptions of those students and the practices used by those who influence, support and educate them; and understanding of the practices that stimulate interests and contribute positively toward enhancing the education attainment and well-being of Sub-Saharan African students. The factors that enhance educational attainment and well-being among students were investigated through the use of support structures. These identified support structures were parental support, the social support they received from friends and social networks, religious/spiritual support, the support they received from their communities, physical support, financial support, the motivations or inspirations they received from teachers, school/university support, and career support. The findings of this study expand and enrich both local and international literature on issues relating to youth or students who have experienced turmoil in their lives, and some of the factors that contribute to their resilience and well-being. These findings further shed light on the topic of enhancing education attainment and the subject of well-being of ethnic minorities and, in particular, Sub-Saharan African immigrant students who have experienced turmoil in their lives. While this topic has been gaining interest in recent years, the formulation and implementation of strategic educational practices to promote educational attainment and well-being for African or Sub-Saharan African students is in its infancy in Canadian. Hence, the new knowledge and insights presented within this study will help policymakers, support persons, and educators to develop strategies that will enable and encourage such students to thrive and flourish.

Det är viktigt med insikt och ökad kunskap om den äldre individens behov och individuella upplevelser för att kunna bemöta individen och utforma vården efter dennes egna villkor. Denna kunskap är viktig att ha med sig som socionom, då ens yrkesroll kan komma att beröra äldre individer som målgrupp. Denna studie har genomförts i USA (Florida) med syfte att undersöka vad livskvalitet innebär för äldre människor på över 65 år, och vilka vardagliga situationer de kopplar livskvalitet till. I denna studie är livskvalitet beskrivet utifrån respondenternas egna personliga upplevelser av begreppet och dess innebörd. Sju semistrukturerade intervjuer har genomförts med individer mellan åldrarna 71-94. Vi kom i kontakt med dem genom en verksamhet i Florida, som erbjuder hemtjänstlösningar till äldre människor som är i behov av vård och omsorg i det egna hemmet. I vår studie har vi använt oss av en kvalitativ undersökningsmetod, och utgått ifrån innehållsanalys som metod för att analysera vårt insamlade material. Denna studies resultat mynnade ut i tre teman som visar på viktiga kriterier för den äldre individen att uppleva livskvalitet. Dessa teman är: Självständighet, social gemenskap och meningsfullhet. Självständighet var viktigt för våra respondenter då det innebar att få vara autonoma i vardagen. Social gemenskap innefattar att synliggöras och bekräftas av omgivningen. Temat meningsfullhet kopplas till att våra respondenter ser en mening i deras primära krets, och begriplighet med deras nuvarande tillvaro. Att synas, höras och märkas är studiens titel, dessa ord är byggstenarna för ett förgyllt åldrande, då vi i vår uppsats fokuserat på den positiva aspekten av livskvalitet i samband med ett åldrande.

This study focuses on the experiences that educators have of their relationships with adolescents involved in drug use. It has been recognised over time that school communities are becoming more important with regards to the impact they have on learners, in particular the impact that learner-educator relationships have on the wellbeing of learners. A qualitative, phenomenological design was therefore used in order to ascertain the educators’ lived experiences. In total, sixteen educators were purposely selected from a secondary school in the area of Delft in Cape Town. In-depth interviews were conducted with all sixteen participants after which a World Café group session was organised in which the same 16 educators participated. These methods collected rich information. The results of the study are reported in an article. The aim of the article was to explore educators’ lived experiences of their relationships with adolescent learners involved in drug use. The study has shown that educators can have positive relationships with learners involved in drug use despite the challenges they face. It seems that it is most likely to occur when the educator feels motivated to nurture these relationships – possibly experiencing personal well-being – and uses a variety of skills and strengths to attempt to achieve this goal. This has implications for how other cases with learners involved in drug use should be treated and how the educators and school can assist these learners. Recommendations that emerged as a result of this study are to make educators aware of their own personal well-being and the importance of nurturing their wellbeing, in order to enable them to, in turn, nurture positive relationships with learners involved in drug use. Schools themselves can also play a role in creating an organisational culture that places emphasis on the relational and personal well-being of teachers as well as students. / MA (Psychology), North-West University, Potchefstroom Campus, 2014

This study focuses on the experiences that educators have of their relationships with adolescents involved in drug use. It has been recognised over time that school communities are becoming more important with regards to the impact they have on learners, in particular the impact that learner-educator relationships have on the wellbeing of learners. A qualitative, phenomenological design was therefore used in order to ascertain the educators’ lived experiences. In total, sixteen educators were purposely selected from a secondary school in the area of Delft in Cape Town. In-depth interviews were conducted with all sixteen participants after which a World Café group session was organised in which the same 16 educators participated. These methods collected rich information. The results of the study are reported in an article. The aim of the article was to explore educators’ lived experiences of their relationships with adolescent learners involved in drug use. The study has shown that educators can have positive relationships with learners involved in drug use despite the challenges they face. It seems that it is most likely to occur when the educator feels motivated to nurture these relationships – possibly experiencing personal well-being – and uses a variety of skills and strengths to attempt to achieve this goal. This has implications for how other cases with learners involved in drug use should be treated and how the educators and school can assist these learners. Recommendations that emerged as a result of this study are to make educators aware of their own personal well-being and the importance of nurturing their wellbeing, in order to enable them to, in turn, nurture positive relationships with learners involved in drug use. Schools themselves can also play a role in creating an organisational culture that places emphasis on the relational and personal well-being of teachers as well as students. / MA (Psychology), North-West University, Potchefstroom Campus, 2014