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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.
251

Further experiments on the seismic performance of structural concrete beam-column joints designed in accordance with the principles of damage avoidance

Li, Luo man January 2006 (has links)
Recent research on jointed unbonded post-tensioned precast concrete frames has demonstrated their superior seismic resistance. Inelastic rotation generated during large earthquake motions is accommodated through gap opening and closing at the beam-to-column connections in the frame. By applying the principles of Damage Avoidance Design (DAD), a steel-steel armoured connection has been demonstrated to be effective in protecting the precast elements from damage. The re-centring ability of the unbonded prestressed post-tensioned system allows the building to return to its original undeformed position after the earthquake with negligible residual deformations. This research experimentally assesses the biaxial performance of the unbonded precast beam-to-column joint and simplifies the steel-steel armoured connection details in the joint. The experimental results of both quasi-static unidirectional lateral loading tests and biaxial lateral loading tests conducted on a 80% scaled unbonded jointed beam-to-column joint are presented. The performance of the proposed simplified steel-steel connection is assessed. A theoretical model is developed based primarily on rigid body kinematics and is validated using the test results. A formulation is also developed based on St Vennants' principle, to estimate the effective stiffness of the precast concrete beams under bidirectional rocking. Based on the experimental findings, improvements to the steel-steel armoured connection and joint details are proposed.
252

The New Racism in the Media: a Discourse Analysis of Newspaper Commentary on Race, Presidential Politics, and Welfare Reform

Rose, Joseph P 12 August 2014 (has links)
The presidency of Barack Obama has given racial framing in the news media a new salience particularly because of the role that media coverage plays in shaping ideas about race. The racial framing that unfolds through the news media reflects new forms of racism that work to justify and explain racial inequalities without explicit references to race. In this study, I analyze the media discussion of welfare reform following a 2012 Mitt Romney attack advertisement that claimed that President Obama “gutted” welfare reform. I use discourse analysis to analyze the prevalence of controlling imagery, colorblind racist rhetoric, and the white racial frame in 91 prominent newspaper articles and political blogs that discussed this controversial advertisement. This study aims to contribute to sociological knowledge about specific language and strategies used by the media to perpetuate racism, and to demonstrate the relationship between political and social welfare discourse and racial ideologies.
253

Epistemic learning: game programming learned from the lens of professionals

Matwyczuk, Roman 12 December 2013 (has links)
This study sought to determine the practicality and effectiveness of an alternate instructional approach referred to as epistemic learning – a low structured, high functioning environment where students learn the principles of practice (i.e., the epistemic frame) of a profession through role-play. This research on epistemic learning is integral in assisting educators to enhance learning and accomplish instructional goals in computer science by having students acquire the epistemic frame of a computer game programmer. Currently, literature on epistemic learning is sparse due to its nascent nature. An action research design with mixed-methods analysis was utilized to assess students’ responsiveness to epistemic learning through an examination of their personal epistemological growth, epistemic frame construction, and programming skill set development. Personal epistemological growth was assessed through a self-reporting epistemic beliefs survey that established students’ attitudes about knowledge and learning. Epistemic frame construction was established using epistemic network analysis in determining the specific epistemic frame characteristics students had acquired. Teacher observations and students’ reflections provided insight regarding programming skill development. Findings revealed the following: 1) each student’s personal epistemology was positively influenced through epistemic learning; 2) most students successfully acquired the complete epistemic frame of a game programmer; and 3) students’ computer programming skills were enhanced through epistemic learning. Although a statistically significant correlational relationship was not established, the results had practical importance as they indicated that students were prepared to participate and succeed in an environment that emulates professional practices. Future research should include longitudinal studies that implement epistemic learning.
254

Surfacing: a guide for approaching landscape

Kennedy, Andrea C. 21 January 2008 (has links)
This work is a compilation of ideas intended as a framework for an alternative approach to engaging ‘site’ in the design process, an approach that maintains and explores the complexities and subtleties of a landscape, of a place. Through two parallel explorations - one that considers an expanded and inclusive interpretation of landscape as the frame through which we engage with, and design, our surroundings, and one that examines the specific nature of this engagement as exchange between the self and the milieu - such an approach has been developed. This approach is called RECONNAISSANCE. Through encouragement of explicit, conscious consideration of how we perceive and experience a landscape, how this contributes to an understanding of a particular place and how this relates to and informs the practice of landscape architecture (both the process and the outcome), RECONNAISSANCE contributes to a strengthening of our abilities and actions as landscape architects.
255

Performance of contention based access control for a media frame network

Ge, Teng 24 April 2012 (has links)
The idea of a Media Frame network (MFN) was proposed very recently for solving the explosively growing demand for end-to-end large file transfers. This networking method combines the advantage of high transmission speed from optical networks and flexibility and fast header parsing from electronic networks. The MFN is based on very large data units or media frames (MF) compared to IP packets. Due to the logical continuity, transporting data in a media frame network largely reduces the power consumption in the intermediate nodes and routers. Currently the backbone of media frame network has been studied. The remaining challenge is to devise a system solving the problem of transporting MFs through access networks (i.e., the last mile) connecting customers to the backbone networks. To our knowledge, no other research activity regarding this challenge has been reported. If this challenge is overcome and if the overall concept is accepted, the MFN could be a very important step in the evolution of the Internet. This thesis focuses mainly on the access network. For the first time, a solution is proposed to establish the ability to transport media frames over a standard PON (e.g. Passive Optical Network) architecture. Because of the unique properties of the media frame network, the physical layer model and transport protocols must be rebuilt. Referring to the ITU-T G.987 recommendations, the physical layer is built based on the XGPON specification. In this thesis, the initialization protocols, bandwidth allocation plan, OLT-ONU (OLT: Optical Line Terminal, e.g. central office. ONU: Optical Network Unit, e.g. customer side box) negotiation protocols are designed. Different schemes for each protocol are proposed, with simulation support based on Omnet++. For the transmission of a 7GB file on average, different transparency degrees under different traffic conditions are compared, and the tradeoffs among essential factors are investigated. / Graduate
256

Projekt som strategi för skolutveckling : - en fjärils färdväg, men ingen dagslända...

Löfqvist, Åsa January 2015 (has links)
School is an important institution charged with the task of contributing to the economic, cultural and social development of the community, and of nurturing democratic citizens. Countless state-sponsored measures have therefore been initiated in order to affect the quality of schooling. One example is a state-financed school development project, which is the focus of this thesis. The overall purpose of the study was to improve awareness of whether, and if so how, using projects as a strategy for improving school contributes to sustainable changes, as well as what has been both advantageous and disadvantageous to this end. Two projects were studied with a focus on the participant's perceptions of and experiences from this project. A number of headmasters and educators were interviewed on two occasions, once in connection with the final phases of the projects, and then again three years later. The analysis of the empirical data was guided by The Frame Factor Model (Lundgren, 1994, 1999), and by Hoy and Miskel's (2008) organisational model. In summary, the study shows that the ambitions of both of the school projects were greater than the sustainable results. Moreover, it was clear that the conditions placed upon the school organisation by the outside world constituted both promoted and encumbered the results of the school projects. State funds contributed to the improvement of schools, while at the same time, other state regulations delimited what the sustainable changes were. The desirable changes were also affected by processes within the organisation and can be connected with structures, cultures and individuals. Above all, current structures within the organisation need to be changed so that the employees have an in-depth involvement in a project and for a protracted period of time. Changed structures allow for common expertise and values to be improved with regard to venturing into a project. Furthermore, the various skills of the employees, as well as their attitudes toward projects within the organisation, were also significant to the sustainable changes. One suggestion for continued research is to improve the knowledge on how structures can be changed within a school organisation so as to enable the organisation's employees to be engaged in such a way as to make collective learning possible.
257

Playing with Reality: Frame Valuations and the 2012 Alternate Reality Game

Payette, Steve 13 December 2011 (has links)
Alternate reality games (ARG) are a relatively new type of game that distributes game content across several media without explicitly identifying that content as part of a game. While players benefit from this aesthetically immersive experience the type of game has the potential to cause confusion over the status of its dispersed content as real or as part of a game. This thesis offers a case study of the 2012 game. The case is contextualized within the disciplines of media studies and games studies, in a wider digital culture where the ubiquity of technology converges to user experience design. A theoretical framework based on Charles S. Peirce’s semiotic, supplemented by Erving Goffman’s frame analysis and James J. Liszka’s transvaluation theory is used to explain the ARG’s problematic relation to the experience of reality.
258

Transforming Canadian Women on the Road to Modernity: A Frame Analysis of Feminisms in Chatelaine (1928-2010)

McIntosh, Heather 15 March 2012 (has links)
Chatelaine, Canada’s longest running women’s magazine (1928-present), has seen various changes in relation to women’s presence in society, specifically women’s health and bodies. The purpose of this study is to investigate the framing methods employed in the presentation of health content in relation to the evolution of feminism throughout this publication’s existence. Drawing upon Michel Foucault’s (1979; 1980) investigation of power, the body, and sexuality; Susan Bordo’s (1993b) feminist theorizing on the cultural meanings of the female body; Erving Goffman’s (1974) Frame Analysis; and further theoretical foundations of frame analysis by scholars in media and communication studies, this thesis examines the ways which health knowledge in Chatelaine aids in the empowerment and modernization of women. The research design of this thesis employs a quantitative media content analysis and qualitative semi-structured in-depth interviews to explore the presence and production of health content in this publication between 1928 and 2010. Findings demonstrate Chatelaine’s interaction with the feminist movement in Canada—as feminist initiatives and activism in Canada flourish, Chatelaine covers an increasingly broad and diverse body of health topics. The analyses reveal the sophistication in Chatelaine’s health content, which is evidenced in the employment of various journalistic techniques that aid in the development of an increasingly pervasive media text. In doing so, Chatelaine demonstrates its ability to empower women through current, clear, and concise health knowledge.
259

Full-scale testing, modelling and analysis of light-frame structures under lateral loading

Paevere, Phillip J. Unknown Date (has links) (PDF)
The differing needs and expectations of building owners, users and society are driving a change towards a technology-intensive, performance-based approach to the design and evaluation of light-frame structures. A critical underlying assumption of the performance-based philosophy is that performance can be predicted with reasonable accuracy and consistency. Development of improved performance prediction technologies, for light-frame structures, requires a detailed understanding of the structural behaviour of light-frame buildings, as well as the environmental loadings to which they are subjected during their lifetime. Full-scale structural testing in the laboratory, combined with analytical modelling, are essential in obtaining this understanding. This thesis presents the results of experimental and analytical investigations into the performance of light-frame structures under lateral loading. The specific objectives of this research are to:1)develop simple, experimentally validated numerical models of light-Frame structures, which can be used to predict their performance under lateral loads, particularly seismic loads; and 2) collect experimental data suitable for validation of detailed finite-element models of light-frame structures.
260

Gentechnik im Fernsehen eine Framing-Analyse

Leonarz, Martina January 2005 (has links)
Zugl.: Zürich, Univ., Diss., 2005 / Hergestellt on demand

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