Thesis submitted in partial compliance with the requirements for the Masters Degree in Technology: Mechanical Engeering at Technikon Natal, 1999. / Housing is currently one of the most critical development areas in the Republic of South Africa (RSA). This developmental project forms part of a possible solution in the delivery of housing through mass production. The objective of this study is to establish a empathetic connection between modem geodesic construction and the traditional dome and to design an effective and efficient prefabricated dwelling unit suited to be easily built by semi-skilled persons. The success of this project will fulfill one of the major objectives of the RSA's Reconstruction and Development Programmes (RDP) - 'A better lifefor all'. / M

D.Litt et Phil. / The number of slums and squatter settlements is rising globally; this is recognised as a significant problem as many of the urban poor find housing in these settlements. With the expanding slum settlements comes a serious problem for many developing nations, that of finding a mechanism to improve these informal developments. These settlements are a symptom of poor urban governance and lack of financial resources causing the urban poor to be pushed into these dwellings and find themselves on the periphery of urban society, not only geographically but socially, economically and legally. Upgrading, integration and legalisation of these housing types is necessary if these peripheral suburbs are to be developed formally. Although many governments have tried top-down approaches of upgrade, these approachs have often failed to produce results as slum upgrades often lead to displacement of the original inhabitants who are ousted into areas even further to the periphery of urban centres. This thesis looks at alternatives to viewing settlements on the urban fringe as a quandary, by using a neoliberal theoretical framework (despite its many flaws), informal property markets in townships in Johannesburg, South Africa can be seen as a catalyst for wealth creation and local economic development. This is particularly important given the historical context of apartheid in South Africa and the segregation of the majority of the population into racially exclusive slums. The post-apartheid government has rallied to improve the lives of this group of poor and dispossessed people with the provision of decent housing a key aspect of this process. A neoliberal framework for economic development was embarked upon in South Africa, with the introduction of neoliberal economic policy (namely GEAR) in 1998, South Africa embarked on a process of reform to encourage market growth. This manifest itself in the ‘Breaking New Ground’ housing policy which adopted a neoliberal stance on Housing provision, and although not removing the role of government in providing low-cost housing, it strives for a market driven housing solution. With a shortage of over 1 million houses in the city, there should be every potential market orientated low-cost housing sector, yet capital within this property sector is often referred to as dead capital with no intrinsic value. This thesis challenges that view by determining the existence of Crisylida capital in township property assets. Crisylida capital is virgining capital in the low-cost property market that could lead to the accumulation of asset capital within this property group, estimated value of Crisylida capital in Johannesburg alone is R6.3 billion. Residents in low-cost housing in Township suburbs in Johannesburg recognise economic value in their dwelling, with only 21% of participants valuing their property at less than R10 000. Further, real estate agents working the township real estate market estimate that just over 50% of properties in these areas are valued at over R200 000. Within this property environment, security of tenure plays an important role in creating not only wealth creation but equally a sense of community ownership. Houses with tenure saw 37% of respondents interested or actively participating in community projects, this compared to 13% of respondents without tenure. This thesis points to a new understanding of low-cost property in Johannesburg, South Africa as a potential market worth billions of Rands that could inject wealth into the hands of marginalised communities. This in turn could assist in fostering sustainable socio-economic urban community within disenfranchised township suburbs.

While common in South Africa, workplace protest actions frequently lead to losses on both sides: productivity losses for organisations and loss of income for protesting employees. It is therefore important to investigate which factors may contribute to low-income workers' decision to protest for higher wages. Based on the theoretical integration of social exchange theory and fairness heuristic theory it was argued that fairer treatment (organisational justice) decreases workers' willingness to engage in protest actions through its positive influence on organisational trust. The researcher examined employees' perceptions of fairness shown by their employer, supervisor and co-workers. A descriptive, cross-sectional research design was employed to test this assumption. Data was collected from low-income employees working in South African factories and retail stores who completed a self-report survey (N = 147). The results of a regression analysis confirmed that employees' perceptions of organisational justice predicted their willingness to engage in protest actions for higher wages when gender and previous involvement in protest actions were kept constant. Perceptions of interpersonal justice as shown by the supervisor was the unique predictor of willingness to engage in protest action, indicating that the decision to protest is not primarily driven by monetary concerns (distributive justice) but rather by how low-income workers feel treated in the workplace. Mediation analysis results revealed that the relationship between organisational justice and willingness to engage in protest action is not through mutual trust. Taken together, this research demonstrated that there is a need for organisations to invest in fairness in the workplace. Most specifically, organisations could focus on training supervisors to treat employees with respect and dignity as it could contribute to employees' decision to refrain from protesting at work.

Adolescence is a period of rapid development marked by significant neurological and behavioral change. Normative neurological shifts that take place during this stage of life occur in the areas of the brain most associated with response inhibition and emotion regulation which is understood in the context of the observed increases in impulsivity and emotional lability among many adolescents. These facets of development may present unique challenges for those adolescents who enter parenthood ruing this period of life as increasing evidence suggests that emotional and cognitive control are highly related to parenting behavior. Those parents who are better able to modulate their emotional responses are best able to cultivate sensitive and nurturing home environments for their children. Compounding the risk for themselves and their children, adolescent mothers also face a constellation of risk factors including poverty, low educational attainment, elevated levels of stress and high rates of early life trauma exposures. Those adolescent mothers who experience homelessness face additional risk, in part because social support and family involvement have been shown to benefit young parents and their children. A substantive body of literature suggests that these interrelated risk factors may stress the capacity to effectively parent, leading adolescent mothers to be less affectionate, less positive, more hostile and intrusive and less emotionally available when interacting with their children. Consequently, supporting adolescent mothers is of great public health concern as they, and their children, are at risk for a range of non-optimal outcomes. The aim of this dissertation was to contribute to the current body of literature linking maternal emotion regulation with positive parenting practices among a highly vulnerable sample of homeless adolescent mothers and their children. Specifically, this dissertation used archival data to extend the current understanding of these associations by exploring the ways in which early life exposure to psychological aggression influenced the regulatory capacities and parenting behaviors of a sample of homeless adolescent mothers. To date, few studies have utilized a computerized measure of response control and behavioral inhibition under emotionally salient conditions in conjunction with ecologically valid multiple observer coded video observations of parent-child interactions within this high-risk population. Participants (N=72) were adolescent mothers and their children living in nine Transitional Living Programs (TLPs) across a Northeastern state, aged 16-22 years old and predominantly Latinx and Black American. On average, participants had one child (M=1.3 years-old). Nearly half of the participants reported a history of foster care or group home involvement. Thirty-two percent of the sample self-reported clinically significant levels of depression and, on average, participants reported slightly elevated levels of anxiety. Consistent with the literature, the sample evidenced significant trauma exposures with participants reporting having experienced an average of three discrete traumatic events. For example, 37.3% reported having experienced physical violence in their home, 72% reported having experienced violence in their community, 45.3% reported having witnessed violence in their community, and 36.3% reported having experienced some form of sexual abuse. Data were collected from the baseline interview of a randomized control trial examining the effectiveness of an intervention designed to increase positive parenting among a sample of adolescent mothers living in TLPs. For this study, interpersonal trauma exposure was operationalized via the Psychological Aggression Scale of the Parent Child Conflict Tactics Scale (Straus, 1999). Maternal sensitivity and hostility were operationalized using the Sensitivity and Non-Hostility scales of the Emotional Availability Scales, 4th edition (EA Scales; Biringen, 2008). Maternal emotion recognition and regulation were operationalized via the Emotion Go/NoGo (EGNG) paradigm. Maternal depression and anxiety were also examined. Consistent with the literature, this study found evidence for the complex associations between maternal exposure to psychological aggression, maternal emotion regulation and parenting behaviors. Specifically, there was a significant positive association between the accurate discrimination of sad from neutral facial expressions and maternal sensitivity. The accurate discrimination of fearful from neutral facial expressions, however, was associated with less sensitive parenting. Additionally, those mothers who were more impulsive when confronted with sad facial expressions during the EGNG sad emotion “go” task were less sensitive when interacting with their children. This study also found evidence for a significant interaction between maternal exposure to psychological aggression and impulsivity in the EGNG fearful emotion “go” task in the explanation of maternal sensitivity. Specifically, for those adolescent mothers who had experienced psychological aggression, impulsivity when confronted with fearful facial cues on a computerized task was associated with increased maternal sensitivity during dyadic interactions. For those mothers who had not experienced psychological aggression, however, increased impulsivity when confronted with fearful faces on the computerized task was associated with reduced maternal sensitivity. Maternal exposure to psychological aggression was consistently associated with increased hostility with those mothers who had been exposed to psychological aggression evidencing more hostility when interacting with their children. Finally, in optimal conditions on a computerized task (i.e., when confronted with happy faces during the EGNG paradigm) those mothers who were rated as more sensitive during dyadic interactions all responded within approximately the same amount of time to the computerized stimuli. No relationship between maternal sensitivity and mean response time was found in the negatively valenced EGNG conditions. There was not sufficient evidence to suggest that emotion regulation and behavioral impulsivity mediated the relationship between exposure to psychological aggression and parenting behavior. Consistent with the literature, these findings suggest a role for both maternal trauma exposure and regulatory capacities in the explanation of parenting behavior. These findings highlight the need for greater research on these complex and multidetermined relationships, particularly within the highly vulnerable adolescent parent population. Additionally, this study’s findings suggest possible avenues for interventions within this population, highlighting the need to consider the ways in which adolescent mothers’ regulatory capacities may influence their ability to intuit and respond to their children. Directions for future research and clinical implications are discussed.

Public school principals who provide and sustain music in elementary programs are often confronted with budgetary cuts and reduced funding for music education. There is a dearth of research regarding music as an essential element in K-3 education in low-income rural schools. The purpose of this generic qualitative inquiry was to explore and describe leadership practices of principals, who despite fiscal challenges, include and sustain music in the K-3 curriculum in a low-income rural area of a small county in North Carolina. Elliott and Silverman’s concept of praxial music education and Leithwood and Riehl’s philosophy of instructional leadership practices were used for the conceptual framework. Through individual interviews with principals (n = 4) and 3 focus groups with parents (n = 8) from Parent Teacher Organizations of elementary public schools in a low-income rural district, data were collected from a total of 12 participants involved with music education. Participants described the importance of and the criteria for including music in the K-3 program regardless of economic challenges emphasizing the significance of school principals’ leadership practices. Data were analyzed using open coding to find emergent themes. Results suggested that commitment to sustaining music education in the K-3 program comes from evidence of children’s development of creative and critical thinking. Providing opportunities for an enhanced education may create perspectives that lead students to become engaged citizens for a more equitable society. The findings may also encourage educational leaders to find ways to sustain music in educational programs as a contribution to positive social change.

The Abstract is not available / Dissertation (MSc (Applied Science))--University of Pretoria, 2004. / Town and Regional Planning / unrestricted

This paper consists of three independent, quantitative studies on three higher education policy issues in the U.S. : 1) Performance-based Financial Aid, 2) Community College Degree Attainment, and 3) Dual Enrollment. The first essay discusses how low-income students in free college programs respond to strict achievement standards exceeding the minimum requirement for federal financial aid. To address this question, I examined the impact of a new credit completion requirement for Indiana’s statewide free college program. This program is only available for low-income students and recently increased the number of credits required for maintaining eligibility from “taking” 24 credits per year to “earning” 30 credits per year in 2013. Using Indiana’s statewide administrative data on college students, I exploit the sudden change in the eligibility renewal rule to identify the causal effects of the requirement on their postsecondary outcomes. I found that the new rule increased the likelihood of completing a bachelor’s degree within four years by 2.5 percentage points. At two-year institutions, the policy had mixed impacts, increasing the chance of graduation within two years by 2.9 percentage points but also lowered the second-year persistence rate by 3.7 percentage points. Meanwhile, the number of of degree completers within five years remained unchanged in both the sectors, suggesting that strict achievement requirements only improve program efficiency but not overall productivity in terms of degree attainment. Lastly, the policy effects are largely driven by community college students and students whose high school GPA is at or below the median. This implies that schooling decisions that the policy is intended to influence are mostly concentrated among those students. In the second essay, I discuss how well machine learning (ML) techniques predict the chance of postsecondary credential attainment for students who started at community colleges. Among community college leaders and others interested in reforms to improve student success, there is growing interest in adopting ML techniques to predict credential completion. However, ML algorithms are often complex and are not readily accessible to practitioners for whom a simpler set of near-term measures may serve as sufficient predictors. This study compares the out-of-sample predictive power of early momentum metrics (EMMs)—13 near-term success measures suggested by the literature - with that of metrics from ML-based models that employ approximately 500 predictors for community college credential completion. Using transcript data from approximately 50,000 students at more than 30 community colleges in two states, I find that the EMMs that were modeled by logistic regression accurately predict completion for approximately 80% of students. This classification performance is comparable to that of the ML-based models. The EMMs even outperform the ML-based models in its ability to approximate the actual probability of degree completion. These findings suggest that EMMs are useful predictors for credential completion and that the marginal gain from using an ML-based model over EMMs is small for credential completion prediction when additional predictors do not have strong rationales to be included in an ML-based model, no matter how large the number of those predictors may be. The third essay focuses on dual enrollment programs at community colleges. The number of high students taking college courses has grown dramatically over the past two decades but little is known about their long-term educational outcomes. Using student-level data obtained from the National Student Clearinghouse, this study provides state-level descriptive analyses on the demographic characteristics of dual-enrolled students, as well as their educational attainment statuses in their early 20s. We tracked more than 200,000 high school students who first took a community college course in fall 2010 for six years, through summer 2016 (five years after high school). Eighty-eight percent of these students continued in college after high school, and most earned a certificate or degree or transferred from a two-year college to a four-year college within five years. What type of college former dual enrollment students attended after high school and how many completed a college credential varied greatly by state, and many states showed big disparities in credential completion rates between lower and higher income students.

While college completion rates have increased over time for all students, low-income students and students of color remain underrepresented among degree holders. The research presented here explores the role that family, peer, and contextual social capital play in perpetuating unequal representation in college, and whether AVID can increase the social capital resources available to students. Using multilevel models and data from the High School Longitudinal Study of 2009 (HSLS:09), results indicated a positive, significant relationship between social capital and rigorous course taking, high school credential attainment, and college-going, with the relationship with family social capital being the strongest. The analyses revealed no direct relationship between AVID participation and academic outcomes, but results did offer modest evidence that some sources of social capital increase more for AVID students over time than non-AVID students with similar characteristics. These findings suggest that educational reform efforts aimed at building social capital are worth supporting. Keywords: social capital; AVID; HSLS:09 dataset; college access; first-generation students; noncognitive skills; cultural capital; neighborhoods; habitus

Financial aid policies are widely used to foster access to higher education for low–income and underrepresented students. Prior research has documented the positive impacts of these programs on the outcomes of the students it intents to help (e.g., Mello, 2021; Londoño-Velez et al., 2020; Bleemer, 2021a; Black, Denning, & Rothstein, 2020). However, how the influx in the number of low–income and underrepresented students at selective institutions shape student outcomes is a somewhat overlooked aspect. Increasing the number of low–income and underrepresented students may come at the cost of reducing the overall academic performance of the group (Arcidiacono et al., 2015). Moreover, it could also lead to social segregation between wealthy and low–income and underrepresented students within the institution. This is an undesirable outcome, if we take into account the increasing evidence on the importance of social membership and networks for employment and overall social mobility (Marmaros & Sacerdote, 2002; S. D. Zimmerman, 2019; Michelman et al., 2021; Rivera, 2016).This dissertation starts by addressing two questions. First, what are the consequences of in- creasing the presence of low–income students at an elite college on students’ academic achieve- ment? And second, can this form of desegregation lead to more interactions between low–income and traditionally privileged students? To answers these questions, I focus on an Elite University in Colombia which experienced a large influx in its enrollment of low–income students, due to the implementation of a large financial aid program known as Ser Pilo Paga (SPP). The program induced plausibly random variation in the shares of low–income students within cohorts and across majors, which I use to examine how the changes in peers’ composition impacted the traditionally privileged students attending this elite institution. In the first chapter of this dissertation, I use administrative data from the Elite University and document how the influx in the share of low–income students led to significant achievement gaps between wealthy and low–income students. Then, I use a difference–in–difference research de- sign to examine the effect that this influx in low–income peers had on wealthy students academic performance and persistence. Overall, my results indicate the influx in low–income peers had no impact on the academic performance of the students traditionally attending this institution. Peer effects estimations suggest that the relatively low academic performance of low–income students had no impact on wealthy students. These findings complement those from Bleemer (2021a), who find college re–segregation has no impacts on the academic performance of White and Asian stu- dents. My results are also consistent with K–12 evidence showing desegregation policies have no impact on the students traditionally attending the desegregated schools (Angrist & Lang, 2004). In the second chapter, I examine whether the influx in the share of low–income peers at the Elite University led students to diversify their social interactions. I complement the administrative data and research design from the previous chapter with administrative records on students’ co– movements across campus captured by turnstiles located at all entrances. To validate the turnstile– elicited interactions, I use secondary survey data on social networks from a sub–sample of students at Elite University. The 9.5 percentage points average increase in the share of low–income peers at an entry cohort–major led wealthy students to double their connections with low–income peers. At least half of the increase in interactions between wealthy and low–income students, however, is explained by interactions of wealthy students with low–income but high–achieving students. These results suggest students diversify their interactions primarily among students with similar academic achievement levels. In the last chapter, I focus on a broader aspect of financial aid policies, and examine how student loans impact college and employment outcomes. In this chapter, my co–author and I are particularly interested in understanding the monetary returns to increasing investments in college education through student loans. To do so, we focus on a nation–wide student loan program in Colombia known as ACCES that covered 75 percent of the tuition cost for low–income students, and exploit rich administrative data to assess the impact of the loan. Importantly, the cost of tuition per semester is fixed for full–time students, regardless of the number of credits they take. The eligibility to the loan increased college enrollment by 9.6 percentage points, the number of semesters attained in 1.76 semesters, and college graduation in 15.4 percentage points. We also find evidence suggesting students with the loan had salaries 13 percent higher six years after high school graduation. To shed light on how student loans can lead to better salaries, we estimate the returns to additional college investments as captured by the marginal increase in college semesters found among loan recipients. We estimate a return to the additional college semester of 3.5 percent of the average daily salary. Sub–group analyses suggest much of the return to the additional semester of college is driven by college completion. This chapter contributes to the literature that has examined how relaxing credit constrains can have positive impacts on long–term outcomes by increasing human capital investments (e.g., Black, Denning, Dettling, et al., 2020; Cameron & Taber, 2004).

This dissertation qualitatively explores 55 Thai 4th grade students, a teacher, and 7 community members from a low-income public school in Bangkok, Thailand in order to develop a design framework for creating school-based maker experiences that are culturally relevant to lower income Thai students. Co-teaching and co designing a two-year design-based research project named, “Little Builders,” I worked with a local science teacher to engage the students in a constructionist learning experience that involved designing and building social innovations to solve problems in their community. I propose the Culturally Relevant Constructionist Design framework as a way to (1) create constructionist learning experiences that align with students’ values and goals, and (2) engage important people in the students’ lives, such as teachers and community members, in the process of making. Designing the learning experience for Thai students from 2017-2019, I draw from the life and work of the late King Bhumibol of Thailand. For 70 years, King Bhumibol was a unifying figure in Thailand and widely admired as “The Developer King” (Nicholas & Dominic, 2011) as he dedicated his life to creating inventions for the good of the country. Students “followed in the King’s footsteps” by making inventions to better their community in the midst of a nation-wide mourning period after the King’s death in 2016. This dissertation builds upon the literature from constructionism, sociocultural views of learning and identity development, community-centered making, and culturally relevant pedagogy. Little Builders provided opportunities for students, teachers, and community members to build projects and relationships. They learned about making while also learning more about each other and about how to support one another. During the Little Builders project, teachers and community members explicitly expressed new appreciation and awareness of students’ skills and strengths, gradually moving away from deficit narratives. Similarly, the students saw themselves as someone who could create and invent while helping others.