This study focuses on illuminating Kenya's urban high school teachers' perceptions of students' diversity and how these differences influence their curriculum implementation, pedagogy, and students' classroom interactions in the learning process. Located within theoretical frameworks of intersectionality and critical pedagogy, the study shows how multiple layered identities and differences identified by teachers interplay and intersect to influence their performance and students' academic success. The theoretical debate over critical pedagogy in diverse contexts shows how Kenya's high school teachers effectively develop classroom environments that address differences and acknowledge arrays of factors that create inequalities. Findings also show that teachers' work continue to be informed by government and institutional policies that favor uniformity and conformity creating contradictions and dilemmas for them. The study applies a mixed qualitative methodology based on interpretive and descriptive phenomenology to inform the study. Participants were selected based on purposive sampling from urban high schools in western Kenya. Data for the study were generated through baseline questionnaires, field interviews, classroom observations, and analysis of archival documents. Findings highlighted arrays of factors identified by participants as contributing to students differences in their specific context. Differences identified by teachers that were common across institutions were academic abilities, entry behavior, primary education backgrounds, proficiency in English language, socio-economic status, and students' motivational status. Some of the factors perceived to influence teaching and learning differed across disciplines, gender of the participants, and the nature of the schools. It was concluded that the impact of these differences on teaching and learning needs to be addressed if high school access, quality, and subsequent academic performance is to be realized for all students in Kenya's high schools.

When the case for organizational change is presented as a “vision,” is action to support the change more likely? This notion was tested in two studies in the context of diversity issues at work. Diversity was selected as the context because Canadian workplaces are becoming increasingly diverse, and organizations are confronted with the challenge of addressing diversity issues appropriately and effectively. Moreover, theoretically critical features of visions, such as a connection with personal values, may be present in a vision of diversity. It was hypothesized that a vision—a picture of a desirable future state—may be more effective when it is aligned with individuals’ self interests and personal values. In Study 1, small groups of undergraduate male and female students (N=221) were presented with a vision of a proposed Employment Equity (EE) program that focused on raising women's employment rates. Self-interest was captured in the design as the interaction of participant gender with extent of employment change for women (small vs. large) resulting from the implementation of the EE program. Value orientation was captured by participants’ importance ranking of social justice on a pre-study measure. Verifying the self interest manipulation, men were seen to perceive that this program would influence their career advancement negatively and this effect was significantly stronger in the condition with the large increase in women’s employment. The most striking finding emerged with the three-way interaction between gender, social justice orientation, and the extent of employment change condition as these variables affected participants’ willingness to support the proposed EE program. Men who placed lower value on social justice showed a straightforward self-interest effect, with lowest support for the policy occurring when the increase in the women’s employment rate was greater. In contrast, men with higher social justice value were more favourable toward the policy that produced a greater change in women’s employment rates. For these men, personal values seemed to trump self-interests. Results involving positive affect mirrored the pattern of these results. Compared to a small employment increase for women, a large mandated increase in women’s employment led men who placed lower value on social justice to report feeling less positive. However, men who placed higher value on social justice reported feeling more positive when the mandated increase in women’s employment was large. Study 2 further examined the role of values in responding to a vision involving diversity. It was hypothesized that when values guide behaviour, the underlying motivation is relatively autonomous. That is, instead of yielding to guilt or social pressure, the values-guided person acts to attain identity fulfillment. To investigate this matter, undergraduate students (N=475) were randomly assigned to watch either a visionary presentation about promoting workforce diversity or a business case presentation. The visionary presentation described a prejudice-free, inclusive workplace; the business case covered the legalities of diversity. It was found that participants whose values were diversity-oriented felt more “inspired” than other participants overall, and this effect was significantly stronger in the vision condition. The primary difference in findings between experimental conditions involved the association between a measure of autonomous motivation and participants’ reports of intended action. A positive, significant association was obtained in the vision condition; no significant association was obtained with the business case. These results are understandable from the conditional nature of autonomous motivation as assessed here. That is, in both conditions, some people (i.e., autonomously motivated people) said that if they acted to promote diversity, it would be in order to promote their personal values. However, it was only in the vision condition in which the connection of diversity-promotion action to personal values was made salient. Thus it appears that a vision can influence behaviour by inducing autonomously motivated people to recognize this connection. The vision was not more influential overall in motivating participants to support the proposed cause. Nonetheless results indicated that a vision can be a complementary tool in a diversity change implementation by sparking an interest to act within the right people. Taken together, the findings from these two studies indicate that a key way a vision motivates behaviour is by forging the link between values and a course of action.

Incorporating molecular genetic data into management decisions would provide fisheries managers with new tools to identify the magnitude of population structure, metapopulation dynamics, at risk populations, and possible genetic interactions between species, so that management strategies could be tailored to better support long-term viability of species and populations. Alewife (Alosa pseudoharengus) and Blueback Herring (Alosa aestivalis) are two closely related anadromous clupeid fishes native to the Atlantic coast of North America. Current management strategies for these two species, collectively known as river herring, take no account of stock structure or even the distinction between the two species. Using 12 neutral microsatellite loci, I examined at multiple spatial scales the patterns of population structure and genetic differentiation for river herring, with particular reference to comparisons of population structure in the U.S., where extensive stocking has occurred, and Canada, where there has been no stocking. Results suggested strong population structure within the Canadian portion of the range and weaker population structure in the U.S. portion. Highly significant genetic isolation by distance (IBD) for parts of the range unaffected by stocking provided evidence of natal homing and limited dispersal. The differing IBD results obtained in three Canadian regions may reflect differences in historical biogeographical factors and contemporary dispersal patterns among regions. Very weak differentiation and an absence of significant IBD for American stocked populations provided evidence that stocking has reduced genetic differentiation between populations in the U.S. portion of the range, except for two divergent stocked populations that appeared to have resisted homogenization. Evidence of recent population bottlenecks were identified in both U.S. and Canadian populations. The genetic structure of Blueback Herring populations appeared to be similar to that seen in Alewife. When sampled in the same river, Alewife and Blueback Herring were strongly differentiated, although hybrids of the two species were detected. Evidence of genetic impacts of stocking, regional variation in patterns of population structure and complex genetic interactions between the species suggest that current management strategies should be re-evaluated.

The purpose of this thesis was to investigate the effect of exposure to multicultural and colour blind ideologies on discrimination in individual selection decisions, and diversity in team selection decisions. One hundred and fourteen participants role played a hiring manager in a large government organization, and were assigned to a multicultural, colour blind or control condition. Participants rated either an Arab Muslim or a White Canadian job applicant, and then selected a team to form a task force from a diverse pool of employees. However, the diversity ideology espoused by the organization did not have an effect on the individual or team selection decisions that participants made, or on attitudes towards diversity issues in the workplace. Possible explanations for non-significant results and implications for practice are discussed.

Questions surrounding the causes and consequences of diversity lie at the centre of community ecology. Understanding the mechanisms by which species diversity is maintained motivates much experimental and theoretical work, but this work often focuses on fluctuation-independent mechanisms. Variability in habitat suitability is ubiquitous through space and time however, and provides another important path through which species diversity can be maintained. As a result, considering environmental variability has value for conservation and management. Finally, differences through space and time in the mechanisms that promote and maintain diversity produce spatially varying patterns of diversity. Spatial variation in different forms of diversity (species (SR), phylogenetic (PD), and functional diversity (FD)) creates difficult decisions about prioritization and reserve locations. This thesis uses experimental, observational, and theoretical methods to explore the causes and consequences of diversity. I show that variation in space and time has important implications for species coexistence and diversity maintenance. In microbial nectar communities, temperature variation through space and time alters the importance of priority effects on community assembly. Using models of warming temperatures in annual plant communities I show that considering temporal partitioning of flowering (a strategy to minimize competition) introduces constraints on phenological shifts: this has implications for phenological monitoring programs. Finally, I show that variability in the timing of fire events in Mediterranean shrublands contributes to coexistence between life forms, suggesting that it should be considered for fire management. In the final two chapters, I focus on conservation prioritization. Comparisons of species richness and evolutionary diversity through space in the Cape Floristic Region of South Africa show that existing reserves protect Proteaceae richness, but fail to capture evolutionary distinct species. More generally, in the final chapter I suggest that SR and PD should be congruent through space when species are of similar ages, regions are depauperate, or ranges are discontinuous.

Symmetrical multilevel diversity coding (SMDC) is a classical model for coding over distributed storage. In this setting, a simple separate encoding strategy known as superposition coding was shown to be optimal in terms of achieving the minimum sum rate and the entire admissible rate region of the problem in the literature. The proofs utilized carefully constructed induction arguments, for which the classical subset entropy inequality of Han played a key role. This thesis includes two parts. In the first part the existing optimality proofs for classical SMDC are revisited, with a focus on their connections to subset entropy inequalities. First, a new sliding-window subset entropy inequality is introduced and then used to establish the optimality of superposition coding for achieving the minimum sum rate under a weaker source-reconstruction requirement. Second, a subset entropy inequality recently proved by Madiman and Tetali is used to develop a new structural understanding to the proof of Yeung and Zhang on the optimality of superposition coding for achieving the entire admissible rate region. Building on the connections between classical SMDC and the subset entropy inequalities developed in the first part, in the second part the optimality of superposition coding is further extended to the cases where there is an additional all-access encoder, an additional secrecy constraint or an encoder hierarchy.

Pterocarpus officinalis dominated forests are a rare ecosystem, found only in fifteen locations in Puerto Rico, all of which are adjacent to the coast and at risk from sea level rise, as well as nutrient pollution, upstream hydrological modifications, and deforestation. All forests of this type that were located further inland were destroyed by agricultural development during the early decades of the 1900’s, in particular to grow sugarcane. Prior to this study, there was little information on the diversity of organisms that live in these forests. The central objective of this proposal was to examine the diversity and species composition of three Pterocarpus forests in Puerto Rico located near Humacao, Patillas, and Dorado, and to compare and contrast diversity among the three forests, and identify possible differences caused by human impacts or natural factors. The data was collected through surveys and sampling at each location. Transect surveys, plots, pitfall traps, insect traps and audio recordings were carried out to identify organisms including birds, mammals, amphibians and reptiles, insects, mollusks, invertebrates, plants and fungi. The Dorado Pterocarpus forest is the most rich and diverse in terms of organisms and has the highest amount of native and endemic species, while the Humacao Pterocarpus forest is the least rich and diverse. Yet conversely, the Dorado forest is the smallest forest, covering only 2.4 ha, while Humacao is the largest, with an area of 150 ha that comprises 63% of the total Pterocarpus coverage in Puerto Rico. The most obvious factor influencing richness and diversity among the forests is the adjacent land cover and history of the sites. Inflow and water sources may also be a factor that alters richness and diversity. This knowledge will assist in the appropriate management of this rare resource in the context of ongoing sea level rise, climate change, nutrient pollution, upstream hydrological modifications, and deforestation. Coastal managers need this information to manage and protect these valuable and rare ecosystems.

Cooperative communications have the ability to induce spatial diversity, increase channel capacity, and attain broader cell coverage with single-antenna terminals. This thesis focuses on the performance study of both unidirectional and bidirectional cooperative diversity networks employing the decode-and-forward (DF) protocol. For the unidirectional cooperative diversity network, we study the average bit-error rate (BER) performance of a DF protocol with maximum-likelihood (ML) detection. Closed-form approximate average BER expressions involving only elementary functions are presented for a cooperative diversity network with one or two relays. The proposed BER expressions are valid for both coherent and non-coherent binary signallings. With Monte-Carlo simulations, it is verified that the proposed BER expressions are extremely accurate for the whole signal-to-noise ratio (SNR) range. For the bidirectional cooperative diversity network, we study and compare the performance of three very typical bidirectional communication protocols based on the decode-and-forward relaying: time division broadcast (TDBC), physical-layer network coding (PNC), and opportunistic source selection (OSS). Specifically, we derive an exact outage probability in a one-integral form for the TDBC protocol, and exact closed-form outage probabilities for the PNC and OSS protocols. For the TDBC protocol, we also derive extremely tight upper and lower bounds on the outage probability in closed-form. Moreover, asymptotic outage probability performance of each protocol is studied. Finally, we study the diversity-multiplexing tradeoff (DMT) performance of each protocol both in the finite and infinite SNR regimes. The performance analysis presented in this thesis can be used as a useful tool to guide practical system designs for both unidirectional and bidirectional cooperative diversity networks. / Thesis (Master, Electrical & Computer Engineering) -- Queen's University, 2009-09-12 14:36:05.05

Although we have developed modes of governance of religious diversity to accommodate the weak level of religious pluralism which characterized Western societies until recently, it is not clear that these modes of governance can meet the challenges raised by the new and deeper form of religious diversity characterized by a growing gap between the self-understandings of religious and secular citizens as well as by an increasing number of religious groups due to contemporary patterns of immigration. Freedom of conscience and equality between the adherents of different churches have historically been secured by a separation between state and religion. However, contemporary political theorists disagree about the shape that this separation should take. Some defend a model of institutional pluralism which requires the state to equally support and recognize different religious groups by providing them with the means to set up their own pervasively religious social institutions. Others put forth a restrictive secularist model according to which religion should be privatized. There should be a strict separation between the public and the religious spheres to ensure that no religion is privileged or disadvantaged by the state. However, I argue that both approaches fail to meet the challenges raised by the arrival of new religious minorities within Western societies. Accommodation of religious diversity through separate institutions is not required by equality and freedom of conscience. Moreover, since it favours institutional segmentation along religious lines, it fails to provide favourable conditions for the integration of new immigrant groups. Strict secularism requires that religious expressions be severely restricted in the public sphere and thus heavily limit freedom of conscience. Moreover, since the public sphere is never fully neutral, strict secularism fails to equally protect the freedom of new religious groups. How can we then achieve the two apparently irreconcilable goals of integrating new minorities and of protecting their freedom and equal status? The thesis that I defend is that these goals can be reconciled by an approach of open secularism based on the reasonable accommodation of religious diversity within shared public institutions. / Thesis (Ph.D, Philosophy) -- Queen's University, 2012-09-26 10:50:03.663

<p>&nbsp / </p> <p align="left">This thesis focuses on federalism and ethnic diversity. Using two case studies, South Africa and Ethiopia, it sets to examine whether institutional designs in a form of federalism can serve as an effective instrument to respond to ethnic claims while at the same time maintaining national unity in the context of multi-ethnic societies. The issues this study investigates are <font face="Times New Roman" size="3"><font face="Times New Roman" size="3">not only topical to multi-ethnic states around the world but constitute the core problems to which communities, ranging from the troubled Sudan to Nigeria and from the Western Sahara to the Democratic Republic of Congo (DRC), are struggling to find solutions. In this regard, the thesis may assist those multi-ethnic states that are struggling to find institutional solution to <font face="Times New Roman" size="3"><font face="Times New Roman" size="3">the ethnic conflicts that characterise their society.</font></font></font></font></p>