Denna uppsats är en litteraturstudie av Roots: The Saga of an American Family. Studien syftar till att undersöka argumentet att rasism har en långvarig effekt på de människor som utsätts för rasism. I detta fall, karaktärerna i romanen som utsätts för rasismens olika hemskheter så som slaveri. Genom användningen av Robert Jensen, WEB Du Bois och Edward Saids teorier (dvs. Privileged/unprivileged, The Veil, Double Consciousness och Others) har romanen Roots analyserats. Slutsatsen visar på hur slaveriet påverkade huvudpersonerna och hur effekten av slaveri lyckats beröva de svarta människorna i romanen deras ursprungliga identitet. Slaveriet ersattes istället av en kollektiv identitet av mindre värde än vita människors identitet vilket lämnat långvariga psykiska ärr för karaktärerna i romanen. Det pedagogiska fokus som används i uppsatsen är den så kallad cooperative learning metoden.

Research shows that the dominant pedagogical practices of physical education are irrelevant to young people in the 21st century, and that physical education currently exists in a time of innovation without change. Subsequently, physical education as a curriculum subject is at risk of becoming extinct unless the 'talked' about pedagogical innovations that provide authentic, relevant and transferable learning experiences can become sustainable 'actioned' futures. Therefore, the purpose of this thesis was to explore how a pedagogical innovation, the Cooperative Learning model, could be used over an enduring period of time. Participatory action research (PAR) was used as the methodology to scaffold the inquiry and to support eight secondary school physical education teachers' learning and use of Cooperative Learning during an academic year. This thesis considers how PAR enabled teachers to break the dominant practice architectures of physical education and how PAR supported teachers‘ use of an emergent pedagogical approach within and beyond the honeymoon period of implementation. In other words, how PAR facilitated teachers' ability to work beyond the dominant pedagogical practices of physical education and the practices endorsed by the school as an institution. Furthermore, how PAR sustained teachers' engagement with, and use of, the Cooperative Learning model. Indeed, Cooperative Learning was firstly immersed within the milieu of the practice architectures. Yet through the use of PAR the teachers were motivated to move beyond the honeymoon period and began to use the model within, with and then against the mess of the practice architectures. Subsequently, Cooperative Learning was emerging as the dominant pedagogical approach. However, this only occurred for some teachers where social connectivity and an emerging community of practice were significant variables in sustaining and adapting the use of Cooperative Learning. The contribution to knowledge is therefore the methodological processes of how to move beyond dominant pedagogical practices and facilitate innovation with change. In order for a pedagogical innovation to become a sustainable 'actioned' future its use is context dependent and PAR facilitates its sustainability. Furthermore, teacher learning should be advanced and teachers should be encouraged to create communicative spaces with colleagues and researcher facilitators.

The purpose of the present study was to investigate the effectiveness of cooperative learning as a rehearsal technique on high school full-band performance compared to traditional rehearsal methods. Two intact high school bands from the same Kentucky Music Educators Association District participated in the study. One band served as the treatment group using cooperative learning rehearsal techniques and the other group served as the control group using traditional rehearsal methods in a quasi-experimental non-equivalent control group design. The study spanned six weeks in which both schools prepared the same performance piece, Variants by Jack Bullock. The groups were pre-tested using a recording of their recent Kentucky Music Educators Association (KMEA) concert festival performance to ensure no statistically significant difference existed in performance ability. The bands rehearsed the study piece for 15-20 minutes two times per week for a total of 12 rehearsals. The bands were also asked to play a researcher-composed warm-up prior to each rehearsal of the performance piece. At the end of the study, the groups recorded final performances of the piece and the warm-up. The full-band performances were measured using the Performance Evaluation Form. Recordings of all tests were sent to four independent judges for evaluation. Statistically significant differences were found between the two groups on both post-test recordings, with the treatment group scoring higher than the control group. Additionally, the within-group comparisons resulted in statistically significant differences for both groups. The treatment group scored higher on the study piece than the pre-test while the control group scored lower on the study piece than their pre-test. Descriptive and qualitative data were gathered on student self-assessment of performance and the implementation of cooperative learning into high school band. Results indicate that students in the cooperative learning treatment group varied greatly in ability to self-assess and that those abilities progressed over time. Students also engaged in the learning activities in a variety of ways. Factors that must be taken into consideration when implementing cooperative learning in a high school ensemble include the structure of the cooperative activities, the role of the band director, and the usage of time.

This paper examines five cooperative board games from the perspective of how randomization is used and how it affects the replayability and player strategy, with the intent to properly identify and categorize elements that contribute to replayability and tension and uses randomization to do so. Each element directly affected by or causes randomization is identified, explained (both what it does and how and what it affects), and categorized based on where in the game the randomization originates in the effort to create a base for game designers to get a better understanding of randomization, if and how they can use it, and which method of using it that can be useful for their own designs.The thesis discusses the impact of using certain randomization elements and draws some conclusions based on how they relate to the replayability and tension of games that use those elements.

In recent years, there has been a rapid evolution and deployment of wireless networks. In populated areas, high-rate data access is enabled anywhere and anytime with the pervasive wireless infrastructure such as the fourth-generation (4G) cellular systems, IEEE 802.11-based wireless local area networks (WLANs), and IEEE 802.16-based wireless metropolitan area networks (WMANs). In such a heterogeneous wireless access medium, multi-radio devices become a trend for users to conveniently explore various services offered by different wireless systems. This thesis presents radio resource management mechanisms, for bandwidth allocation, call admission control (CAC), and mobile terminal (MT) energy management, that can efficiently exploit the available resources in the heterogeneous wireless medium and enhance the user perceived quality-of-service (QoS). Almost all existing studies on heterogeneous networking are limited to the traditional centralized infrastructure, which is inflexible in dealing with practical scenarios, especially when different networks are operated by different service providers. In addition, in most current wireless networks, mobile users are simply viewed as service recipients in network operation, with passive transceivers completely or partially under the control of base stations or access points. In this thesis, we present efficient decentralized bandwidth allocation and CAC mechanisms that can support single-network and multi-homing calls. The decentralized architecture gives an active role to the MT in the resource management operation. Specifically, an MT with single-network call can select the best wireless network available at its location, while an MT with multi-homing call can determine a required bandwidth share from each network to satisfy its total required bandwidth. The proposed mechanisms rely on cooperative networking and offer a desirable flexibility between performance measures (in terms of the allocated bandwidth per call and the call blocking probability), and between the performance and the implementation complexity. With the increasing gap between the MT demand for energy and the offered battery capacity, service degradation is expected if the MT cannot efficiently manage its energy consumption. Specifically, for an uplink multi-homing video transmission, the existing studies do not guarantee that the MT available energy can support the entire call, given the battery energy limitation. In addition, the energy management mechanism should take account of video packet characteristics, in terms of packet distortion impact, delay deadline, and precedence constraint, and employ the available resources in the heterogeneous wireless medium. In this thesis, we present MT energy management mechanisms that can support a target call duration, with a video quality subject to the MT battery energy limitation. In addition, we present a statistical guarantee framework that can support a consistent video quality for the target call duration with minimum power consumption.

The organization of software systems into subsystems is usually based on the constructs of packages or modules and has a major impact on the maintainability of the software. However, during software evolution, the organization of the system is subject to continual modification, which can cause it to drift away from the original design, often with the effect of reducing its quality. A number of techniques for evaluating a system's maintainability and for controlling the effort required to conduct maintenance activities involve software clustering. Software clustering refers to the partitioning of software system components into clusters in order to obtain both exterior and interior connectivity between these components. It helps maintainers enhance the quality of software modularization and improve its maintainability. Research in this area has produced numerous algorithms with a variety of methodologies and parameters. This thesis presents a novel ensemble approach that synthesizes a new solution from the outcomes of multiple constituent clustering algorithms. The main principle behind this approach derived from machine learning, as applied to document clustering, but it has been modified, both conceptually and empirically, for use in software clustering. The conceptual modifications include working with a variable number of clusters produced by the input algorithms and employing graph structures rather than feature vectors. The empirical modifications include experiments directed at the selection of the optimal cluster merging criteria. Case studies based on open source software systems show that establishing cooperation between leading state-of-the-art algorithms produces better clustering results compared with those achieved using only one of any of the algorithms considered.

This dissertation describes a research study that investigated cooperative inquiry as a strategy for professional learning of inner-city school principals in a large urban centre in Western Canada. The study attempted to identify the central issues of concern and means of redress for school leaders in high-poverty communities, many of which focused on educational leadership, school management, the context of their schools within impoverished communities, and the challenges of personal well-being. The findings suggest that cooperative inquiry was an effective strategy in that the approach was participatory, democratic, empowering, life-enhancing, and fostered community-building among participants. The findings also suggest that the approach was effective in that it was grounded in the action research cycle of planning, action, observation, and reflection. The study further examined the use of dialogue as a means of constructing knowledge regarding these issues, and identified the ways in which such knowledge impacts upon the professional practice of these principals. Findings suggest that participants gained knowledge from each other, offered knowledge from others, constructed knowledge together as a group, and developed deeper understandings of their own perspectives. Findings also suggest that meaning is lost when dialogic interactions are transcribed into print. Thus, dialogue is a form of communication in and of itself, one that cannot simply be transformed into the written word without losing part of that dialogic essence. Further, this study posits that dialogue has unique power to be both a process for meaning making, as well as an ontological means of clarifying one’s own sense of reality.

This project explores the gender relations among a group of recyclers belonging to a consortium of nine recycling cooperatives in the ABC region of São Paulo, Brazil. Employing a feminist geographical lens and participatory research methodologies I examine these uniquely gendered spaces. This thesis is divided into four sections. Each section is written in an attempt to improve understandings of the ways in which the spaces of the recycling cooperatives are gendered. In the first section I provide information that frames the thesis and the larger research project. I begin this section by providing a geographical and socio-economic overview of the region where the research took place. This is followed by a discussion of my research methodology, a literature review of the relationship between women, solid waste, and labour in Brazil, and a look at my reflexive positioning as a researcher on this project. Section two explores the relationship between gender, empowerment and equity among cooperative recyclers involved with this study. This section poses the question: in what ways has the recycling cooperative allowed for women to inspire personal and social change and have the power to influence the institutions that affect their lives? I argue that the recycling cooperatives involved with this study are spaces where individuals who have traditionally lacked access to power are granted the opportunities to empower themselves. Section three is about performed social relations, specifically the role of hegemonic masculinity in shaping gendered space within the recycling cooperatives. Drawing from qualitative research data, this section critically explores the deployment of power within the lives of the cooperative recyclers. First, I explore the concept of hegemonic masculinity, and suggest its importance for understanding gendered space. Second, I draw on my personal research experiences and qualitative data to provide a spatial examination of the most salient aspects of hegemonic masculinity in the lives of the female cooperative recyclers. Third, I support the notion that masculine domination is not something only established by men and designed to oppress women, but women themselves can construct and reinforce hegemonic masculinities. Section four concludes the study by highlighting apparent shortcomings of the research and implications for future research. Concerned with apparent contradictions between the arguments in sections two and three, I provide a discussion of the multiplicities of space and explain that such contradictions are inherent to the nature of social space. Following this I offer a critical self-reflection of my methodology were I discuss my complicity in reproducing gender binaries and post-colonial research practices. / Graduate

With the advancement of communication technology, more and more control processes happen in networked environment. This makes it possible for us to deploy multiple systems in a spatially distributed way such that they could finish certain tasks collaboratively. While it brings about numerous advantages over conventional control, challenges arise in the mean time due to the imperfection of communication. This thesis is aimed to solve some problems in cooperative control involving multiple agents in the presence of communication constraints. Overall, it is comprised of two main parts: Distributed consensus in multi-agent systems and bilateral teleoperation. Chapter 2 to Chapter 4 deal with the consensus problem in multi-agent systems. Our goal is to design appropriate control protocols such that the states of a group of agents will converge to a common value eventually. The robustness of multi-agent systems against various adverse factors in communication is our central concern. Chapter 5 copes with bilateral teleoperation with time delays. The task is to design control laws such that synchronization is reached between the master plant and slave plant. Meanwhile, transparency should be maintained within an acceptable level. Chapter 2 investigates the consensus problem in a multi-agent system with directed communication topology. The time delays are modeled as a Markov chain, thus more characteristics of delays are taken into account. A delay-dependent approach has been proposed to design the Laplacian matrix such that the system is robust against stochastic delays. The consensus problem is converted into stabilization of its equivalent error dynamics, and the mean square stability is employed to characterize its convergence property. One feature of Chapter 2 is redesign of the adjacency matrix, which makes it possible to adjust communication weights dynamically. In Chapter 3, average consensus in single-integrator agents with time-varying delays and random data losses is studied. The interaction topology is assumed to be undirected. The communication constraints lie in two aspects: 1) time-varying delays that are non-uniform and bounded; 2) data losses governed by Bernoulli processes with non-uniform probabilities. By considering the upper bounds of delays and probabilities of packet dropouts, sufficient conditions are developed to guarantee that the multi-agent system will achieve consensus. Chapter 4 is concerned with the consensus problem with double-integrator dynamics and non-uniform sampling. The communication topology is assumed to be fixed and directed. With the adoption of time-varying control gains and the theory on stochastic matrices, we prove that when the graph has a directed spanning tree and the control gains are properly selected, consensus will be reached. Chapter 5 deals with bilateral teleoperation with probabilistic time delays. The delays are from a finite set and each element in the set has a probability of occurrence. After defining the tracking error between the master and slave, the input-to-state stability is used to characterize the system performance. By taking into account the probabilistic information in time delays and using the pole placement technique, the teleoperation system has achieved better position tracking and enhanced transparency. / Graduate

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