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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
811

Poor Reading Ability as a Risk Factor for Alcohol Use in College Students

Mesman, Glenn Ryan 01 December 2010 (has links)
Although collegiate alcohol use has extensively been studied, there is a lack of research examining alcohol use in college students with learning disabilities (LD), particularly those with reading disabilities (RD). In youth populations there is mixed support indicating that students with LD are at an increased risk for alcohol use compared to students without LD. One theory suggests that LD may be indirectly related to alcohol use, but there does not appear to be research examining whether there is a direct pathway between LD and alcohol use. The goals of this study were to better understand the relation between reading and alcohol use in college students and the psychological well-being of college students with reading difficulties. Results indicated the following: there was no support for a direct pathway between reading ability and alcohol use, college students with low reading achievement did not obtain significantly higher alcohol use scores than students with average or high reading achievement, and there was no significant difference in psychological well-being between students with low, average, and high reading achievement. There was some support for an indirect pathway between reading and alcohol use through correlational analyses; however, reading was not predictive of alcohol use after controlling for gender and ethnicity. Future studies should continue to examine the relation between reading abilities and alcohol use which may lead to a better understanding of the potential difficulties that college students with reading problems encounter.
812

ICTs in medium-sized farms in developing countries : a case study in Mexico : conventional banana and organic rice cultivation

Lastra Gil, Luis Emilio January 2017 (has links)
This research examines how farmers working medium-sized farms in Mexico have adopted and enacted Information and Communication Technologies (ICT), and how these ICTs have impacted work practices. The effects of ICTs on farmers’ economic relations are explored from a business process perspective using a framework that combines Transaction Cost (TCT) and Social Embeddedness theories. A single case study in Mexico with two embedded units of analysis from different crop sectors, a cluster of banana producers from Tabasco and an organic rice grower from Campeche, provide an in-depth understanding of the adoption of ICTs and their impact. We examine issues of learning and co-operation, and how ICTs have affected production and distribution and the positioning of farmers in the context of their work practices and economic relations. The thesis discusses the ICTs used in the business process cycle of farming and their impact on business development and economic exchange. The research elaborates on and confirms the existence of network forms of organisation that operate in the farmers’ communities and analyses their social embeddedness. The findings show that information technologies bring improvements to the agricultural business process, facilitating not only the collection, collation and analysis of data to support informed decisions, but also innovative farming and business practices through learning and co-operation. We find that ICTs complement and support social relationships, both preexisting (traditional community connections and business links) and novel (virtual contacts and social media) to stimulate business development. The significance of social context is corroborated and should help inform development policy.
813

The risk game : a critical discourse perspective on the construction and transference of pensions risk

Read Shepley, Linda M. January 2017 (has links)
Financial retirement risk is one of the biggest dilemmas faced by individuals and societies in late modernity. It is an unintended consequence of over fifty years of social, scientific and economic development. These have produced ageing citizens, who spend too much and save too little. In response, economists argue that more of the State's pension risk must be transferred to the individual. To achieve this, the UK Government introduced auto-enrolment workplace pension policy to 'nudge' spenders into becoming savers. In this thesis, I use this change in legislation to explore what happens when the libertarian paternalism, implicit in behavioural economic theory, enters the real world. Adopting a sociological approach through critical discourse analysis, I explore the different interpretations of financial risk constituted by the State, media, employers and employees. The study traces how the State has attempted to transfer financial risks onto individuals through a process labelled the risk game. This involves constructing and legitimising discourses of winners versus losers, spenders versus savers and experts versus lay people. However, the risk game is not straightforward. Other participants, such as the press, employees and employers, play with the discourses government set in motion and through their discursive reinterpretations, they attempt to transfer the risk onto the other players, including the government. The discursive strategies adopted include: the passive matching effect, used by employees to pass the responsibility to the employer; and the avoidance effect, where employees return the risk to the State in a new form. Other employees actively choose to play by different rules, using the operative visualization of risk, through discourses of long-term vision and self-reflexive action. Understood as the risk game, this thesis reveals flaws in the implementation of the government's auto-enrolment pension policy. Informed by Beck’s theories, the thesis concludes that rather than nudging individuals, the State can only transfer responsibility for risk through coercion or with the recipient’s understanding and active engagement. This has implications for pension policy and the pensions industry and casts doubt on the prevailing economic theory that spenders can be nudged into becoming savers.
814

Three fourths a penny for your thoughts? : gender pay differentials in Trinidad and Tobago : an empirical analysis

Roopnarine, Karen Anne January 2018 (has links)
The Caribbean is an understudied region in terms of gender wage gaps and this research adds new insights into the sparse economics literature on this topic for the region, and in particular, for the two-island state of Trinidad and Tobago. Economic inequality between men and women is a pertinent problem deserving of in-depth study because it has far-reaching inter-generational consequences. Furthermore, gender inequalities in the labour market are considered as indicators that considerably restrain economic growth. Trinidad and Tobago’s economy has undergone tremendous strides in terms of economic growth over the past 20 years, and this study provides a deeper understanding of how the gender pay gap evolved over that time period. The present analysis of the gender wage gap has allowed us to ascertain if working women in Trinidad and Tobago were able to benefit from the country’s improved economic prosperity. The present study employs 2012 Continuous Sample Survey of the Population (CSSP) data for Trinidad and Tobago to investigate the causes of gender income differentials. The CSSP is used to generate labour force statistics for Trinidad and Tobago, and provides a wide range of information, including data on wages, gender, employment, unemployment, hours of work, industry, occupation, and level of education. The CSSP has two main advantages that make it a good source of data for analysing labour market issues in Trinidad and Tobago. Firstly, it is a nationally representative population survey, and secondly, it is the most detailed population survey for the country. The Blinder-Oaxaca and Neumark methods of decomposition were used to portion the wage gap into “explained” and “unexplained” components. The findings suggest that the differential is not well explained by differences in the levels of human capital (“explained” component) and indeed gender bias in favour of male workers seems to be prevalent (“unexplained” component). The raw wage gap in 2012 measured 11.4 per cent, and in the absence of gender discrimination women’s wages could increase by as much as 26 per cent. In addition to decomposing the gender wage gap at the mean level of wages, the research also investigated the causes of gender income differentials along the entire distribution of wages. Two recent quantile decomposition techniques – developed by the Machado and Mata (2005)/Melly (2006), and Firpo, Fortin and Lemieux (2009) were used to portion the gap into “explained” and “unexplained” components. Similar to the findings from the Blinder-Oaxaca methodology, the results for this portion of the research suggest that the differential in wages is not well explained by differences in the levels of human capital and substantial gender bias in favour of male workers. Quantile decompositions allow us to ascertain if there is a “glass ceiling” or a “sticky floor” in the labour market. Glass ceilings are said to exist when there is a larger unexplained gender wage gap at the top of the wage distribution, whereas sticky floors exist when there is a larger unexplained wage gap at the lower end of the wage distribution. The results suggest that female workers in Trinidad and Tobago face sticky floors rather than a glass ceiling. Lastly, the well-known Heckman two-step procedure (sometimes referred to as the limited information maximum likelihood (LIML) estimator) was employed to test for the presence of sample selection. The test for selectivity was carried out for both men and women separately. The results indicated no evidence of sample selection in any of the model specifications, including Mincerian-type wage regressions with additional controls for occupation, industry, and sector of employment (public vs. private). However, the sample selection model did not consider any exclusion restrictions due to data limitations, and consequently the model proved to be weakly identified. The chapter concluded that the “uncorrected” OLS subsample is the more appropriate model to be used for analysis given that these estimates are more robust compared to a sample selection model without exclusion restrictions.
815

The socially embedded individual

Li, Xueheng January 2018 (has links)
This thesis contains three studies. They are connected by the idea that "no man is an island": each individual contributes to shaping, and is constrained by, the social and economic structures of the organization or the society that the individual is embedded in. The first study, Chapter 2, examines optimal networks with weighted and directed links under complementarities. A group of agents take actions that are endogenously determined by which network the planner implements. Complementarities mean that the best-response action of each agent is increasing in the actions of those who have a link with positive weight pointing to the agent (representing the direction and intensity of influence). Optimal networks are those maximizing the planner's objective function which is an increasing function in the effort of each agent, subject to the constraint that the total weight of the links of the network does not exceed a certain level. The agents' best-response function and the planner's objective function can be convex or concave. We show that every optimal network exhibits dramatic concentration of influence so that a very small number of agents impose significant impact on the productivity of the whole organization. The second study, Chapter 3, investigates how cooperative norms emerge and evolve over time. I construct a stochastic dynamic model based on the idea that cooperation in one-shot interactions is sustained by endogenous social norms. The model shows how cooperation and punishment of defectors co-evolve. It reveals the conditions under which cooperation emerges and persists in the long run. In particular, recent empirical studies find that cooperation in one-shot interactions is positively correlated with law enforcement across societies, and that cooperation is higher in large, modern societies with higher degrees of market integration compared to small-scale societies. I extend the model to explain these regularities. I show that the ability to “vote with feet” is the key to understanding the difference in cooperation between small-scale societies and large, modern societies. The third study, Chapter 4, is an experimental project, a joint work with Lucas Molleman and Dennie van Dolder. Previous studies suggest that whether individuals perceive a behavior as fair depends on its frequency in the population. Using a prisoner's dilemma game, we test experimentally whether informing individuals of a higher proportion of cooperators in the population affects the fairness perception about free riding and changes individuals' punishment of free riders. Different from previous studies, we use the strategy method to obtain each participant's complete punishment strategy. We find a remarkable heterogeneity among participants: some participants increase punishment of free riders as the proportion of cooperators increases, suggesting that they consider free riding to be more unfair when more cooperators are around; yet, many others punish independently of the proportion of cooperators. We show that the heterogeneity cannot be captured by any single existing theory.
816

What predicts workplace self-paced e-learning outcomes? : an exploratory study of motivation, self-regulated learning characteristics, and organisational contextual factors

Chau, Yat Kwong January 2018 (has links)
Organisations today are investing significant amounts of time, money, and resources on workplace self-paced e-learning, yet employees seem to be having problems even getting these e-learning courses completed, bringing into question the true value of workplace self-paced e-learning. In an attempt to improve understanding of factors contributing to success in workplace self-paced e-learning, this study investigated how employee learners’ motivation, self-regulated learning, and organisational contextual factors affected outcomes in workplace self-paced e-learning. A quantitative study was conducted to investigate the research questions. Participants of the study were 119 employees enrolled in workplace self-paced e-learning courses provided by Hong Kong organisations. Data were collected using online questionnaires and analysed using the partial least squares structural equation modelling technique. Findings revealed significant relationships between learners’ motivation, self-regulated learning, organisational contextual factors, and training outcomes in workplace self-paced e-learning. Motivation to learn, time management, metacognitive self-regulation, perceived choice, workload, and organisational support were found to positively correlate with training outcomes as expressed in terms of course completion rate, learner satisfaction, and perceived learning performance in workplace self-paced e-learning. Findings also revealed learners’ autonomy in learning participation, level of workload (negative), and supervisor support (negative) moderate the relationship between learners’ time management strategy use and completion rate of workplace self-paced e-learning courses. Unfortunately, the results failed to support the expected relationship between supervisor support and training outcomes. The significance of the findings is discussed, along with implications for researchers and practitioners, limitations of the current study, and opportunities for future research.
817

The dynamics of supply chain failure

Cox, Karsten January 2018 (has links)
In today’s highly competitive global manufacturing industries, the reality facing most prime or focal manufacturing organisations around the world is one where resources have been reduced, inventory has been drained, technology spending curtailed, and processes that are not core to an organisation’s business have been scaled back and / or outsourced. In competitive global marketplaces prime manufacturers simply cannot afford to have any area of their operations compromised. Supply chain operations need to be robust and resilient in order to retain and increase market share. Supply chain failure is a phenomenon that can potentially cause major issues for many organisations, especially when failure becomes persistent. Supply chains may under-perform or fail in different ways. Here we are concerned with a particular kind of supply chain failure, persistent failure over time, which occurs when a supplier fails persistently to provide the level of quality and delivery performance originally expected or specified in an agreed contract. The phenomenon is observed in industries where there is a lack of substitute suppliers with adequate design and production capability and / or capacity, potentially high switching costs, and regulatory and accreditation issues. The goal of this research is to provide managers at prime manufacturing organisations with an effective way to understand their supply environment and provide insights to help identify and resolve supply problems that might otherwise become persistent failures. In this research project, we seek to understand and rationalize what persistent supply chain failure is, identify why it happens and what influences it. This is achieved by conducting new primary empirical research to examine the ‘mechanisms’ and ‘dynamics’ of persistent failure and how organisations react to persistent adversity in supply chains. Multiple case studies have been conducted in the Aerospace Industry to understand and explain the nature of the phenomenon of persistent failure. An analysis of the extensive empirical evidence collected has enabled a new model of persistent supply chain failure be developed using causal loop diagrams. The ‘Persistent Failure’ model helps to understand the causes of the phenomenon and helps to identify mitigating strategies that can limit its emergence in supply chain relationships. The empirical study, the qualitative and quantitative analyses, and the causal loop model of persistent failure provide a significant contribution to the body of knowledge in purchasing, supply chain and operations management.
818

Essays on decision-making under uncertainty

Wang, Di January 2018 (has links)
This thesis consists of three closely related studies investigating individual decision-making under risk and uncertainty, with a focus on decision weighting. Chapter 1 provides an overview of the common themes and theoretical framework for this research. Chapter 2 reports the development of a simple method to measure the probability weighting function of Prospect Theory (Kahneman & Tversky, 1979) and rank-dependent utility theories. Our method, called the Neo-Lite method, is based on Abdellaoui et al. (2011)’s source method and the Neo-additive weighting function (Chateauneuf et al., 2007). It can be used for both risk (known probabilities) and for ambiguity (unknown probabilities). The novelty of our method lies in how data of decision weights are used to obtain the measurement of the whole function. Compared to the more widely used parametric fitting, our method is simpler, as it minimizes the number of decision weights required and does not rely on the elicitation of subjective probabilities (for ambiguity). An experiment of choice under risk demonstrates the simplicity and tractability of our method. The predictive performance of probability weighting functions measured using our method is shown to be almost equally good to that measured using the standard parametric fitting method. Chapter 3 presents a theory of choice under risk primarily to explain why individual probability weighting functions are often found to be non-linear and inverse-S shaped. Our rationale for non-linear probability weighting is based on a psychologically grounded feature of choice making, a feature we call attention-based state weighting. We show that, under well-defined circumstances, our theory can be equivalent to Cumulative Prospect Theory (Tversky & Kahneman, 1992) with a probability weighting function depending on not only ranks but also sizes of outcomes of risky prospects. This allows our theory to accommodate evidence about probability weighting that cannot be explained by Prospect Theory or Cumulative Prospect Theory. The evidence just mentioned refers to recent findings that people have stake-sensitive probability weighting functions. Chapter 4 reports an experiment that further explores the idea of stake-sensitive decision weighting. In addition, the experiment also tests hypotheses derived from the theory presented Chapter 3. In this chapter, we use a more general concept, decision weights, to refer to probability weights that can be stake-sensitive. Particularly we investigate whether and how decision weights are affected by two main properties of a lottery: outcome level (or expected payoff level) and outcome spacing (or the ratio of the best outcome of the lottery to its worst outcome). We elicit subjects’ Certainty-Equivalents for carefully-designed sets of lotteries and estimate their decision weights and utility curvatures using a model slightly more general than Cumulative Prospect Theory. Our main finding is that only outcome spacing has significant and systematic influence on decision weighting at the aggregate level, and that both outcome level and outcome spacing have systematic and significant effects at individual levels. This finding, together with the theory of Chapter 3, challenges the common understanding of probability weighting. Chapter 5 concludes the thesis by summarizing all findings in previous chapters, discussing the implications, and pointing to directions for future research.
819

Psychedelic revival: a mixed-methods analysis of recreational magic mushroom (psilocybin) use for transformational, micro-dosing and leisure purposes

Shaw, Lindsay Victoria 06 September 2018 (has links)
Background: Following years of inactivity, psychedelic research has rapidly expanded within clinical and therapeutic fields. In particular, magic mushrooms (psilocybin), a plant-based psychedelic, have been researched for the treatment of complex mental health and substance dependence conditions, and yielded promising results. Largely due to the historical baggage of the psychedelic movement in the 1950s-1970s, and the stigma of recreational substance use, recreational magic mushroom users have been ignored within the current psychedelic revival. This thesis addressed this gap, examining the magic mushroom recreational substance use patterns of emerging adults in Victoria, British Columbia. Theory and Methods: Using the normalization thesis as the guiding theoretical framework, this thesis used a sequential-exploratory mixed methods design. Statistical analysis of quantitative cross-sectional interviews (n=558) conducted between 2008 -2016 generated rates of use, availability, and self-rated knowledge rates of magic mushrooms users. Qualitative cross-sectional semi-structured interviews (n=20) analyzed through thematic analysis determined substance use behaviors with reference to the current social and cultural context. Participants were recreational magic mushroom users, aged 19- 24. Results: Quantitative results indicated high overall rates of lifetime and past year magic mushroom use, with the lowest reported prevalence rate of lifetime use occurring in 2014 (86%), suggesting high rates of use within the recreational substance using population. There were no statistically significant relationships between year and lifetime or past year rates magic mushroom use. Gender was statistically significantly associated with magic mushroom use, with males being more likely to use magic mushrooms. Qualitative results indicated dynamic and strategically planned magic mushroom experiences. Themes developed include: shifting understandings, optimizing experience, purpose driven use; and post-trip impact. Participants reported using for transformational, micro-dosing, and leisure purposes. Discussion: Results suggested that magic mushroom use is in the process of differentiated normalization and assimilative normalization, influenced by developmental, social and cultural forces. Recreational users report substance use practices that have not been widely reported with the substance use literature, including using small doses of magic mushrooms (i.e. micro-dosing) for self-enhancement and therapeutic purposes. Results can be applied to the current psychedelic revival in three ways: (1) directing future clinical research directions and; (2) provide lived and experience and relevancy to clinical research, which will improve applicability and; (3) re-conceptualizing the identity of a recreational substance user, which has important implications regarding stigmatization. / Graduate
820

A comparison of experiences and uses of living rooms in Guildford and Oyama

Kimura, Michiharu January 1986 (has links)
A living room is defined in terms of place theory (Canter, 1977a): a relationship between actions, conceptions, and physical attributes of the setting. A new term "anti-living room" is created to highlight the importance of a subject's decision in the use of the living room. A "multiple use" of the living room, which is an antithesis of place theory, is tested against the empirical data collected between two different cultures. The paradigms of Tao are introduced to highlight the cultural differences in the pattern of use of living rooms. The English living room is hypothesised to be predominantly yang (B) (rational), whereas the Japanese living room being predominantly yin (B) (intuitive). Attempts are made to relate the I Ching to facet theory, both dealing with the complexity of "real life" issues. In order to understand the "entire phenomenon" of a living room, and to accommodate the "multidimensional nature" of experiences in a living room, facet theory and its associated multidimensional scaling procedures (SSA-1, MSA-1 and POSA) have been applied in this study. A facet theory postulates a priori definitions (mapping sentences) of the pattern of use of living rooms. MDS procedures try to reveal the underlying structures of the data. Thus it is possible to compare findings within similar living rooms and between different living rooms of different cultures when a facet approach is taken. A cross-cultural study is presented of patterns of behaviour, furniture possessed and attitudes towards living rooms in 115 homes in Guildford (England) and a comparable social sample of 145 households in Oyama (Japan), reveals that the Japanese engage in a wider range of activities in the Japanese living room (yin action - synthesis). In the English living room the English are likely to specialize its use, namely, relaxing and entertaining (yang action - analysis). In the field of man's relationship with his living room, the type of approach which might be termed intuitive speculation seems to be lost in a world devoted to the supposedly more scientific approach of objective analysis. As Alan Watts (1970) has speculated, this emphasis on the so-called objective may indeed be a handicap for Western man, for it enables him to retain his belief in the separateness of the ego from all that surrounds it. Although certain objective facts have been presented in this thesis, it is hoped by the author that its overall message is clear: allow yourself to be open to the consideration of relationships other than those that can be proved or disproved by scientific method, for it may well be in these that a deeper truth lies. Chapter 1 defines a living room in English and Japanese houses and briefly outlines the structure and aims of the thesis. Chapter 2 introduces the concept of space in the East and the West and discusses the living room in a cross-cultural context. Chapter 3 reviews the existing research on living rooms. Chapter 4 describes the research instruments and the selection of samples and introduces facet theory and its associated multivariate statistics. Chapter 5 analyses the structure of the pattern of living room activities. Chapter 6 analyses the structure of the use of living room furniture. Chapter 7 analyses the structure of satisfaction with living rooms. Chapter 8 develops a typology of families and relates it to living room activities. Chapter 9 develops a typology of physical properties of living rooms and relates it to living room activities. Chapter 10 discusses the implications of the research.

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