abstract: This study explores how WeChat, one of the most popular Chinese-based Social Network Sites (SNSs), has been adopted and used under different patterns between two Chinese generation cohorts, namely “The post-70” (i.e., people who were born in the 1970s) and “The post-90” (i.e., people who were born in the 1990s). Three major issues were examined in this Study: (1) what are the differences in WeChat connection between two generations; (2) how Chinese post-70 and the post-90 cohorts differ regarding their cultural value orientations and how those differences influence their WeChat connection; (3) if there is a participatory cultural divide between two generation cohorts. Two hundred and eight the post-70 cohort and 221 the post-90 cohort were recruited to complete a 91-item survey. Results indicated significant differences between the post-70 and the post-90 cohorts in WeChat adoption and use, collectivistic/individualistic (COL/IND) orientations, and participation in creating and spreading of popular online memes. Moreover, factors influencing human capital- enhancing activities on WeChat were examined. Also explored were the influence of cultural values on the motivations to connect to the Internet and frequencies of different types of WeChat activities. Major findings and limitations were discussed. / Dissertation/Thesis / Doctoral Dissertation Communication 2018

Indie studios, which used to have a challenging time creating and releasing games, are on the rise. In the past, these studios have had a hard time getting their hands on useable tools. Indie developers at the time had to work with basic tools in order to create games less technologically advanced. This created a gap between triple-A and indie studios that, at the time, was widely disregarded. This stands as the lens for our study. We begin by conducting a prestudy that looks at the statistics behind games on steam. After this we form our interview questions and conducted both standardized open-ended interviews as well as surveys. The data collected suggest that there is a correlation between the availability of ease-of-use tools and content created. In our discussion we bring forth ideas about how this may help reduce the knowledge gap, and nurture the online innovation democracy.

We used a divide-and-conquer algorithm to recursively solve the two-dimensional problem of protein folding of an HP sequence with the maximum number of H-H contacts. We derived both lower and upper bounds for the algorithmic complexity by using the newly introduced concept of multi-directional width-bounded geometric separator. We proved that for a grid graph G with n grid points P, there exists a balanced separator A subseteq P$ such that A has less than or equal to 1.02074 sqrt{n} points, and G-A has two disconnected subgraphs with less than or equal to {2over 3}n nodes on each subgraph. We also derive a 0.7555sqrt {n} lower bound for our balanced separator. Based on our multidirectional width-bounded geometric separator, we found that there is an O(n^{5.563sqrt{n}}) time algorithm for the 2D protein folding problem in the HP model. We also extended the upper bound results to rectangular and triangular lattices.

Philosophiae Doctor - PhD / The experiences and perceptions of ICT access and usage by women in marginalised South African communities is sorely under researched. Where information from a gender-based perspective reflecting potential digital gender disparities exists, it is typically a statistical view of the ICT landscape (largely reflecting access). Exploration of the complex underlying socio-cultural factors affecting women’s ICT usage is under-represented. There is an urgent need to hear women’s own voices and perspectives on such intricate and often obscure subject matter. This research has aimed to bring traditionally overlooked perspectives to the fore by exploring the experiences and perceptions of women in marginalised South African communities regarding ICT access and usage. This qualitative study, guided by a feminist phenomenological perspective, focused on the individual lived experiences of twelve women living in three marginalised areas of the Western Cape of South Africa. Data were collected via semi-structured interviews and analysed through the Interpretative phenomenological analysis (IPA) approach. The findings showed that the women had strong attachments to ICT and had integrated it into their own individual contexts, to fit their needs and activities. ICT had been interwoven into various social, economic, educational, political, cultural, recreational and spiritual dimensions of life. A range of factors emerged as having influence on women’s digital participation. Some of the more significant barriers were digital skills and confidence, poor social support systems, affordability of ICT, awareness of personally beneficial opportunities, time constraints, resistance from a male partner and poor literacy. Additionally, the women lived in highly gendered environments, with sociallyconstructed gender norms, roles and identities, which had a strong influence on digital experiences and perceptions. This socio-cultural gender inequality was fundamental in the time constraints, and in the power dynamics and resistance women faced from male partners. Findings indicated that gender identities and traits disadvantage females in the digital context, for example ideas of femininity being viewed as conflicting with a perceived ‘dirty’ ICT field. Detrimental perceptions associating sophisticated ICT activity with males were reportedly prevalent in the communities and some of the women interviewed subscribed to the essentialist theory which considers men inherently better suited to technology. These findings have important implications for policies and practices in view of enhancing the digital inclusion of women in marginalised South African communities. Recommendations towards this end are outlined, specifically centred on gendersensitive approaches in the planning and implementation of digital inclusion initiatives.

<div>In Divide & Recombine (D&R), data are divided into subsets, analytic methodsare applied to each subset independently, with no communication between processes;then the subset outputs for each method are recombined. For big data, this providesalmost all of the analytic tasking needed when data are analyzed. It also provideshigh computational performance because typically most of the computation is em-barrassingly parallel, the simplest parallel computation.</div><div><br></div><div>Another kind of tasking must address computational performance and numericaccuracy: the computing of functions of all of the data, or “statistics”. For data bigand small, it is often important to compute such statistics for all of the data, whichcan be summaries of the data, such as sample quantiles of continuous variables, orcan process the data into a form that helps analysis, such as dividing the data intorepresentative subsets. Development of computational methods to compute thesestatistics can be challenging.</div><div><br></div><div>D&R can be a very effective framework for computing statistics. To supportthis, we introduce the concept of embarrassingly parallel (EP) statistics, both weakand strong. The concept of EP statistics is not entirely new, but has had littledevelopment. The existing methodology is mainly sums of sums. For example, this isdone when computing the necessary statistics for least squares where sums of productsand cross productions are carried out on subsets then summed across subsets. Ourtreatment of EP statistics has taken the concept much further. The outcome is abilityto use EP statistics in conjunction with the use a Fourier series to approximate an optimization criteria. The series terms, which are strongly EP statistics, are summedacross subsets, and the result is optimized. These are EP-F computational methods.</div><div><br></div><div>We have so far developed two EP-F computational methods for two widely usedstatistic computations. EP-F-Quantile is for quantiles of big data, and EP-F-KDtreeis for KD-trees. Speed and accuracy of EPF-Quantile are compared with that of thewell-known binning method, which also can be formulated in terms of EP statistics. EPF-KDtree is the first parallel KD-tree computational method of which we areaware. EP and EPF computational methods have potentially many other applicationsto computing statistics.</div>

Technological innovation is increasingly contributing to the development of smart objects, meant as semi-autonomous devices augmented by sensing, processing and network capabilities that facilitate older adults being independent and in control of a healthy lifestyle. Given the lessened familiarity that the ageing population has with internet-based technologies, a 'digital divide' among generations is often observed. This research is premised on the basis that design interventions can develop intuitive and understandable smart objects minimising age-related differences and promote a greater technology adoption. The aim of this thesis is to investigate how the understandability of smart objects for the ageing population could be supported through the application, at the product design level, of Smart Materials (SMs), a category of engineered materials whose properties can be designed to both stimulate human sensorial abilities and to develop engaging experiences. In line with such research enquiry, SMs are adopted in this thesis for their ability to embody 'analogies' and 'metaphors' into product designs and systematically stimulate the prior knowledge and memories of older adults to facilitate their understanding of new concepts, following the principle of 'familiarity'. Analogies and metaphors, powerful learning tools for written, verbal and visual communication, have been recently investigated as 'non-linguistic' tools, when physically embedded into product designs, to facilitate the users' understanding how technology works. How non-linguistic metaphors help to cope with age-related differences is still incomplete. In order to demonstrate that embodied SMs can minimise differences in the understandability of technologies across generations, a qualitative and exploratory study was conducted; empirical evidence was collected through four techniques to accomplish the following objectives: 1. identify critical areas that affect older adults' everyday life and that smart objects should cope with; 2. define a set of embodied Smart Materials to be included into the prototype of a Smart Radio, a novel communicative device specifically design for the ageing population; 3. evaluate the prototype of the Smart Radio, where age-related similarities and differences in the interpretation are made explicit. 62 participants (n=31 under-60-year-old and n=31 over-60-year-old participants) evaluated the developed Smart Radio, the main evaluation study conducted in this thesis, using four different families of SMs. Findings reveal that embodied SMs considerably help mitigate age-related differences in the understanding of smart objects; this in return may increase the chance of technology adoption among ageing users. The embodiment of Smart Materials that enable metaphorical processing shows promising improvements on the older adult's ability to reaffirm their own subjective awareness, hence control, of the world around them along with opportunities for a human-centred technology development.

The development of digital networks has allowed the largest news media organisations to consolidate and centralise their publishing businesses in flourishing capital-city markets. This has resulted in a withdrawal from other less-viable markets, especially those which are geographically remote, and the subsequent emergence of the 'digital divide' with its attendant negative effects. This thesis proposes that the combination of technologies, theories and processes which has brought about the 'digital divide' can now be realigned to reverse those negative effects, and to enhance the possibility of focussed participatory communication taking place within and between those previously less-viable markets. This enhanced participatory communication - which I have named 'integrated journalism' - brings with it measurable and positive effects, generally known as community capacity building effects, which lead to better outcomes for the members of enhanced communities, a more innovative and flourishing approach to life and business, and a more innovative and forward-looking atmosphere within enhanced communities. Two new models are devised and presented: the first allows members of audience communities to learn and implement the process of publishing a community newspaper under the tuition of an experienced journalist; the second enables both journalists and audience members to measure and direct the effects of news publication within communities.

Lower rates of computer adoption and usage in rural areas has been called a "digital divide." This work explores the current state of connectivity within a rural town of the Pacific Northwest with a quantitative and qualitative overview of computer usage and access within civic and activity clubs, ranging from town's Rotarians to its bowling leagues. An Anthropological Rapid Appraisal Process (RAP) leverages focus groups, mini-surveys and ethnographic methods within the clubs to explore the topography of the digital divide. Civic clubs with younger, higher-income, better-educated members have higher rates of e-mail penetration (93%-56%) while activity clubs fare far worse on average (28%). Research establishes a link between club demographics and e-mail penetration rates, by showing that older clubs report less e-mail usage. This work explores the conditions that exacerbate the digital divide as well as highlighting those which may mitigate it. Variables include the presence or absence of technological leadership and the nature of ties to corporate and/or national organizations. Additionally, research shows that rural settings limit and structure the opportunities for computer skill acquisition. Civic clubs are increasingly reliant on computer-mediated communication (CMC) and computer-mediated information (CMI) sources and correspondingly, also upon the computer proficient members who can manage websites, or create and distribute electronic bulletins. "New media" is challenging traditional club norms and favors the contributions of more technological literate members, while handicapping the participation of non-computer using members. Beyond the hyped-up prospects of increased efficiency and communication amongst geographically dispersed members of such clubs, the technology is also creating new forms of exclusion. Recommendations include: 1) a technology decision-making process that ensures consensus among club members by including non-users; 2) creative capacity-building to support computer usage; and 3) by-laws which ensure that members are not marginalized because of a current or chronic lack of computer usage. This work grounds expectations of new technology, by providing a factual account of computer usage within clubs and exploring how clubs are using computers to facilitate their activities. / Graduation date: 2003

The economic and health disadvantage of Canadian single parents relative to the general population is well documented. Most studies, however, have not considered the effects of gender or urban/rural residence on the mental well-being of single parents. These gaps are important to address given that: 1) single father families are growing at a faster rate than single mother families; and 2) 13% of families residing in rural Canada are headed by single parents. Three research questions guided the study: 1) Does the mental health of single parents vary by gender and/or urban- rural residence? 2) Do single parents’ demographic, socioeconomic, and psychosocial characteristics vary by gender and/or urban- rural residence? and 3) Do the demographic, socioeconomic, and social correlates of single parents’ mental health vary by gender and/or urban- rural residence? Data from Statistics Canada’s 2007-2008 Canadian Community Health Survey (Master file) was used, with analyses focused on a subsample of 18-64 year old single parents. The primary dependent variable was self-rated mental health (fair/poor vs. good/very good/excellent). The other dependent variables were the prevalence of anxiety disorders, mood disorders and binge drinking. The primary independent variables were gender and urban/rural residence; the Metropolitan Influenced Zone (MIZ) classification was used to measure residence. Additional independent variables were included to reflect single parents’ demographic characteristics (age, marital status, Aboriginal identity, number and ages of children), socioeconomic position (e.g. household income, education, income assistance home ownership, food security), and psychosocial characteristics (e.g. sense of community belonging). Bivariate and multiple logistic regression analyses were the main statistical techniques applied. Sampling weights and bootstrapping were used to calculate accurate estimates and associated confidence intervals. iii Results indicated that the proportion of single parents who rated their mental health as “fair or poor” did not differ significantly by gender or urban-rural residence. Single mothers were more likely to report mood and anxiety disorders in comparison with single fathers, though the prevalence did not vary by residence. However, single mothers and single fathers living in Strong/Medium MIZ regions of the nation were more likely to report higher proportions of binge drinking compared to their more urban counterparts. Compared to single fathers, a greater proportion of single mothers resided in urban Canada, were less than 45 years of age, never married, self-identified as Aboriginal, had two or more children, and had a child under or equal to five years of age in the household. On most indicators of socioeconomic position, single mothers were significantly more disadvantaged than single fathers but did not differ significantly on psychosocial measures. Demographically, a greater proportion of rural than urban single mothers were of Aboriginal origin had two or more children, and at least once child under the age of 6 years in the household. Regarding socioeconomic characteristics a higher percentage of rural than urban single mothers indicated receiving social assistance, working part-time and having an annual household income of less than $20,000. No significant differences emerged by residence with respect to employment status, food security, home ownership or perceptions of life stress; however, single mothers living in more rural locals were more likely to rate their sense of community belonging as “somewhat or very strong” When data on single fathers was analyzed (Table 4.6), relatively few differences emerge. However, a greater proportion of urban than rural single fathers had a university education and owned their own home. Single fathers in rural regions were more likely than their urban counterparts to report most days as “quite a bit or extremely” stressful. No other statistically significant differences by residence emerged. iv The results of the multiple logistic regression analyses found the following variables to be associated with increased odds of fair/poor self-rated mental health: older age, low household income, being unemployed, being food insecure, experiencing higher levels of life stress and a weaker sense of community belonging. The relationship between demographic, socioeconomic and psychosocial characteristics and self-rated mental health was not modified by gender or urban-rural residence. Thus, the findings of this study will help policy makers identify the factors that adversely affect the mental health of single parents in Canada.

This dissertation is about the role of institutions in bridging the Digital Divide. Its thesis is that governments must encourage the consistently increased use of information and communications technology (“ICT”) if they hope to foster sustained economic growth. Superficially, the Digital Divide describes differences in ICT usage between rich and poor nations, but it is more profoundly concerned with poor nations’ integration into a global economy. Intensive academic study demonstrates that four factors are critical to the relationship between ICT usage and economic growth: institutions; telecommunications infrastructure; investment in ICT; and human capital. The dissertation addresses three perceived shortcomings in the literature. First, proponents of institutions’ importance use the term vaguely, often obscuring important distinctions between policies, laws and institutions, thereby inhibiting detailed analysis. Second, many writers see the institutional reform needed for growth as an exceedingly slow process due to factors beyond governments’ control. Third, the literature does not adequately address which institutions are salient to the relationship between ICT usage and economic growth or how to create them. The dissertation attributes more precise meanings to key terms and contests the view that institutional reform can only proceed at a glacial pace. Its primary goal, however, is to identify specific institutions that help mediate the relationship and to suggest how they might be built relatively quickly. Good institutions can create the enabling environment that allows for the building of telecommunications infrastructure, investment in ICT goods and services and the development of human capital to lead to economic growth. The analysis of institutions identifies several salient institutions and concludes that the manner in which they are designed often determines their effectiveness. Case studies of Singapore and Malaysia examine their successful, but divergent, development paths. Their different rates of development can be attributed, in part, to the quality of their institutions.