published_or_final_version / abstract / Social Work and Social Administration / Doctoral / Doctor of Philosophy

In the first chapter, I analyze the question that whether the elasticity of intertemporal substitution or risk aversion is more important determinant of precautionary savings. This is an important question since a significant fraction of the capital accumulation is due to precautionary savings according to studies. Thus, knowing the important determinant of precautionary savings will be helpful to understand the capital accumulation mechanism. I look into the effects of the elasticity of intertemporal substitution and risk aversion on precautionary savings separately by performing simulations in order to obtain numerical results. I find that the elasticity of intertemporal substitution is more important determinant than risk aversion. In the second chapter, I study the impact of the introduction of futures trading on the volatility of the underlying spot market for Turkish Istanbul Stock Exchange (ISE).The economic literature intensified the debate on the negative or positive impact of futures trading on the stock market volatility. Although there are empirical studies for different countries with mixed results, most of them focus on developed countries. There are a few empirical researches on emerging markets. Analyzing the data, following results are obtained for ISE. First, the results suggest that the introduction of futures trading has decreased the volatility of ISE. Second, the results show that futures trading increases the speed at which information is impounded into spot market prices. Third, the asymmetric responses of volatility to the arrival of news for ISE have increased after the introduction of futures trading. In the third chapter, I investigate the presence of calendar anomalies in ISE by using GARCH models. The presence of calendar anomalies and their persistence presence since their first discovery still remains a puzzle to be solved. On the other hand, there are some claims that general anomalies are much less pronounced after they became known to the public. Most of the studies have examined the developed financial markets. However, it is important to test the calendar effects in data sets that are different from those in which they are originally discovered and so ISE is a good case to test the calendar effects for a developing country. / text

<p>The purpose of this investigation is mainly to study if pupils have enough knowledge concerning the water cycle and the life of the plants’, and what kinds of household word they have, to discuss pollution within these areas. I also studied how the pupils’ knowledge are holding up against what the course-plans says, since it have come to light by other investigations that knowledge are insufficient within the nature-oriented (No) subject in school.</p><p>The survey has carried out on 28 pupils in a 5th grade, with help of a questionnaire survey. Their teacher has been interviewed and I have studied their local course-plans and also the pupils’ schoolbooks in No.</p><p>The result of the questionnaire survey indicates that the pupils had insufficient knowledge within the areas of plants’ life and pollution, something their teacher had a presentiment about.</p><p>The conclusion is that they need to go out more often in the nature and see how the plants and the environment are affected by different factors. Since the school have a school-forest it should be excellent too use in teaching. This should however be no worry since the school books are following the course-plans goals.</p> / <p>Syftet med denna undersökning är främst att studera om eleverna har tillräckliga kunskaper om vattnets kretslopp och växtfysiologi samt vilka begrepp de har, för att kunna diskutera miljöförstöring inom dessa områden. En jämförelse mellan elevernas kunskaper och vad som står i kursplanerna gjordes då det framkommit genom andras undersökningar att det finns brister inom det naturorienterande (No) ämnet i skolan.</p><p>Undersökningen har genomförts på 28 elever i årskurs 5, med hjälp av en enkätundersökning. Deras lärare har intervjuats och jag har studerat deras lokala kursplaner samt elevernas grundskoleböcker i No.</p><p>I resultaten av enkätundersökningen framkommer att eleverna hade brister inom områden gällande växtens liv och miljöförstörning, vilket även deras lärare hade en föraning om.</p><p>Slutsatsen är att de behöver komma ut mer i naturen och se hur växter och miljön påverkas av olika faktorer. Då skolan har en skolskog, är denna utmärkt att utnyttja. Vidare behöver man inte oroas över elevernas bristande kunskaper eftersom elevernas grundskoleböcker följer kursplanernas mål.</p>

The recovery and analysis of data from secondary refuse contexts is a crucial aspect of many archaeological investigations. Treatment of secondary refuse as a distinct analytical context is especially useful for the examination of socioeconomic and demographic variability in prehistoric and modem societies. This dissertation reviews ethnoarchaeological research on refuse disposal in non-industrialized societies, modern industrialized societies, and historic contexts. Based on this review, a framework is suggested for the analysis of secondary refuse at archaeological sites. Results of an ethnoarchaeological study of modern household refuse are presented. The study uses data collected by the University of Arizona's Garbage Project from Tucson, Arizona; Phoenix, Arizona; New Orleans, Louisiana; and Marin County, California. The depositional structure of modern household refuse is examined. Special focus is given to identifying and analyzing the relationships between refuse variability and socioeconomic and demographic variability. Furthermore, the effects of short-term, external economic changes on the patterning associated with ethnicity in Tucson are identified and examined. The implications of the study for historical and prehistoric archaeology are discussed.

The extent of a community experiencing social vulnerability depends on the community’s ability to access resources that may contribute to coping mechanisms (either within the household or provided externally by a responsible authority) that decrease the impacts and effects of a disaster. Therefore, the purpose of this research was to identify the existence of social and institutional mechanisms that aim to reduce experiences of water inaccessibility and the causes of social vulnerability, and increase coping mechanisms within Kayamandi. Kayamandi is a low income residential community on the north-westerly periphery of the greater Stellenbosch town in the Western Cape. The research attained responses through questionnaires and surveys from residents, community organisations and responsible personnel. These surveys allowed the researcher to produce raw attribute data for each household that assisted in spatially representing vulnerable households and informing the five priority areas of the Hyogo Framework for Action. Contributing to this method of attaining information, secondary geographic data collection was obtained through the Stellenbosch Local Municipality, the National Geospatial Information Directorate and the National Demarcation Board. The findings of this thesis established that household and public water infrastructure contribute to the risk of experiencing social vulnerability that affects economic standings and quality of health within the community. Contributing to this and due to Kayamandi’s politically sensitive and historically fractioned community, social cohesion has also been noted as an area of vulnerability. Although these vulnerabilities are experienced, residents are able to implement technical, social and municipal reliant coping mechanisms. However, although efforts from Stellenbosch Local Municipality do respond to most of the key indicators within the Hyogo Framework for Action, the study found no concrete efforts within the Stellenbosch Local Municipality that illustrate integrated mechanisms to reduce the impacts of disasters and compound effects. / Magister Artium - MA

Unemployment is the most popular indicator of the country’s economy. As popular as it is, it remains difficult to define and to measure. This is the reason why different economists have different views of where South Africa really is as far as the unemployment rate is concerned. Female unemployment in South Africa is relatively high and much attention should be given on that issue. Some females are uneducated; others lack the skills while others are discouraged due to lack of vacant positions within their area. The consequences of unemployment are devastating and remain one of the most significant challenges for South Africa (Naude & Serumaga-Zake, 2001:261). These consequences range from decreased standards of living to degradation of society as a whole through crime, and community unrest (Barker, 1995:113). This study aims to investigate the factors that have an influence on the employment status of females in Bophelong Township, to determine if variables such as age, marital status, education level and income have any causal effect on the employment status of females. The results of this study will then help policy makers to create and design strategies that will help achieve the objective of unemployment reduction. / MCom (Economics) North-West University, Vaal Triangle Campus, 2014

Since households and businesses alike obtained the high-speed Internet service of broadband, the Internet has become integral to daily life in the 21st century. Advancements in information and Internet technology has led to the conception of novel internet- enabled applications such as, Online Social Networks (OSNs). Since the turn of the twenty first century fast-developing OSNs such as, Twitter and Facebook have become essential communication channels that people are using to develop their online personal and professional networks online. A recent phenomenon that is worrying countries around the globe is an ageing population. Due to recent improvements in the quality of life and advances in medicine, individuals are achieving longer life spans. Given the fact that older adults are also experiencing loneliness and depression, a recent solution to reduce this problem is the use of OSNs. Using these reasons as motivation, the aim of this research is to identify and understand the factors driving or inhibiting the adoption, use and diffusion of OSNs within the older population (50+) in UK households. In order to achieve this aim the Model of Online Social Networking (MOSN) was conceptually developed. Drawing upon the attitudinal, normative and control constructs from the leading Information Systems (IS) theories of the Diffusion of Innovations theory (DOI), Theory of Planned Behavior (TPB), Model of Adoption of Technology in Households (MATH) and the E-Services Adoption Model selected constructs were identified and formed. To achieve the aim, the conceptual framework (MOSN – Model of Online Social Networking) was initially empirically validated using primary data. A quantitative approach involving a small-scale online pilot survey (n-252) and a wide-scale online survey (n-1080) were used for this purpose. Findings revealed that that older individuals will adopt Internet technologies if technology-facilitating conditions such as ‘anytime access’ to Internet capable devices and a fast reliable Internet connection had significant positive effects on OSN intention. In terms of influences of peers, it was revealed that older individuals do consider and act upon the views of members in one’s social circle. Most significantly, the consequences of older adults efforts to preserve their own privacy enforces a vast majority of non-adopters from not taking part in the OSN uptake. In terms of diffusion it was found that messages about OSNs conveyed through media channels: TV, newspapers and magazines are having a negative impact on older adults intention to adopt OSNs. As little is known of the underlying factors effecting older individuals adoption or non-adoption and diffusion of OSNs this research contributes to an emerging body of knowledge through the identification of empirically supported factors found to be significantly influencing UK older adults decision making regarding OSN technology adoption. For those participants currently using OSNs an in-depth understanding of usage behavior is presented. Importantly this research addresses a gap in research relating to the household adoption of OSNs in older adults in the UK. Due to the limitations of time, finance and manpower research findings could not be nationally representative of the UK are only representative of a single group of society residing in an affluent area of the UK.

Household fuel pollution from the use of low quality biomass fuels is considered as a risk factor for respiratory tract infections (RTI) in women and children. Inhalation of fuel-derived pulmonary toxins (e.g. particulate matter (PM2.5μm) , and carbon monoxide (CO) can harm the lungs of young children, due to their under-developed immune defences. In Bangladesh acute respiratory infections (ARI) are the leading cause of child mortality (< 5 years of age). This thesis aimed to examine the relationship between RTI and household fuel pollution exposure using measured pollution data and medical diagnoses. During an 18-month longitudinal health intervention in northern Bangladesh households (n=408) were interviewed (3 times) on cooking/fuel-use practices and child health. Anthropometric data (height/weight) and finger-prick blood samples for analysis of immune status (c-reactive protein, alpha-1-acidglycoprotein (AGP) and albumin) were collected (n=321 < 5 years of age). All unwell children (62.4%) were medically examined. Household pollution levels (particulate matter (PM2.5μm) and carbon monoxide (CO) were monitored for a 24-hour period (n=61). Moderate/ severe RTI was common (24.8%) (youngest child only n=213). Poor child growth (stunted: 43.8%, underweight=66.7%, wasted: 38.4%) and immunity were detected. 98% of the households used inefficient chimneyless mud stoves and low quality biomass fuels (wood, golden, dung). The measured indoor pollution levels exceeded the WHO safety thresholds (PM2.5 μm range: 85 to 3020 μg/m³ CO range: 0-16 ppm) (PM2.5 μm>25 μm/m³, CO>9ppm). Longitudinal multivariate GLM showed that cooking practices were associated with child immune status: haemoglobin levels (F= 1.555, p=NS) were significantly associated with Bihari ethnicity and a fixed stove use (F=3.718 and F=3.716, p<0.05 respectively). Elevated log₁₀-AGP levels were found (F=4.371, p<0.05) in Saidpur in households using a fixed stove (F=4.123, F=3.780, p<0.05). The patterns in child growth z-scores were due to age only (stunting: F=7.413, p<0.01, underweight F=5.787, p<0.05). Interestingly, poorer change score for weight-for-age (F=34.893, p<0.01) was associated with low age and more frequent cooking (F=6.441 and, F=6.553, p<0.05 respectively). Logistic regression (healthy vs. RTI) identified the presence of child by the stove during cooking as the sole risk factor for RTI (absent OR= 0.257, 95% CI: 0.097 - 0.676, p<0.01). Indoor cooking and the use of a fixed stove were associated with low SES. Education may help to reduce behaviours associated with high household fuel pollution exposure via the introduction of simple healthy cooking practices.

This study addresses the issue of household disaster preparedness. This work contributes two elements to disaster research. The first contribution improve the knowledge of the factors that affect household disaster preparedness. The review of literature yielded three categories of variables that can jointly explain household disaster preparedness: household structure, demographics, and risk-perception factors. In this study 19 variables compose these factors. A second contribution constitutes a theoretical exploration of the concept of disaster preparedness. In this work, four different constructs of disaster preparedness were tested. These constructs include material preparedness, preparedness activities, a combined index, and a weighted and combined index. The study presents the logic and methodology of the index construction and validation. The data used in this study came from households in the Montreal Urban Community (MUC) in Canada. A random sample of 1,003 English- and French-speaking heads of households adequately represents the 1.8 million persons within the MUC. An independent survey firm conducted the interviews in 1996. Results show that the weighted combined household disaster preparedness index constitutes the best construct to represent the concepts under study. Study results also reveal that risk-perception variables (attitudinal factors) offered the strongest explanatory power. Household structure and demographic variables collectively explained less than 8% of the dependent variable. The model used in this study yielded a coefficient of determination of .320, explaining 32% of the variance in the household disaster preparedness level. Concluding this study, the discussion offers implications for both disaster managers and researchers. Researchers should add to their analysis the household perspective as a complement to the organizational one. Also, it is clear that many other conceptual issues must be explored in understanding and measuring disaster preparedness. Disaster managers should base their efforts on sound research rather than on misconceptions about social behavior. Such implications can contribute to bridging the gap and also putting into practice the knowledge drawn from this growing and collective effort of studying disasters.

DOI:http://dx.doi.org/10.17159/2413-3221/2016/v44n1a371 / Rural poverty is a major challenge in most developing countries especially in Africa where the majority of people are still living below the poverty datum line. In Zimbabwe, poverty is made more severe by occasional droughts associated with climate change, climate variability and failed socio-economic-political governance. One of the ways to mitigate the impact of drought and prevent deepening poverty is the introduction of small irrigation schemes. However, there is a raging debate on the social and economic viability of these schemes on household livelihood security and income. This paper aims at investigating the socio-economic impacts of Lower Gweru Irrigation project in Zimbabwe. A case study approach was used in this study. Primary data was gathered using self-administered questionnaire and complemented by secondary data. Results demonstrated that rural irrigation has a critical role in ensuring sustainable household and community income. Irrigators fared well regarding wealth accumulation, household food security and quality of life as measured through the use of standardised HDI. In light of the above, there is a need to fund and develop more rural irrigation schemes so as to ensure livelihood security and rural development in Zimbabwe. Keywords: Rural livelihood, Poverty, Climate change, Irrigation, Lower