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ix, 68 p. A print copy of this thesis is available through the UO Libraries. Search the library catalog for the location and call number. / This thesis will position the work of contemporary photographer Jeff Wall among his peers from the 1980s until the present with an emphasis on the transition from theoretical modes of references to the art historical canon to an inquiry into everyday scenes through photographic constructions. Starting with the so-called "street photo," Mimic (1982), Wall's oeuvre has expanded in pursuit of representations of common, urban scenes that are secretly works of fiction. Building on ideas from Roland Barthes, Douglas Crimp, Michael Fried, Rosalind Krauss and Thierry de Duve, the argument is made that the "street photos" have shaped Wall's larger production of photographs that question the construction of vision in life and the media. Furthermore, his street photos have influenced other artists working through postmodern poststructuralist ideas to reestablish the nature of photography. / Committee in Charge: Dr. Kate Mondloch, Chair; Dr. Charles Lachman; Dr. Dan Powell

The development of products which enable passive solar-energy air-heating to be integrated into the heating strategies of public, commercial and industrial buildings is described. These buildings are, in general, only occupied significantly during the day; consequently the bulk of heating demand coincides with the period of solar gain. In these circumstances collected solar heat should be delivered with the minimum of delay. The design and operation of units which are capable of supplying solar heated air in this manner is outlined. These are passive, naturalcirculation air-heating collectors, also known as natural-convection air-heaters, or thermosyphoning air panels. Four methods of retrofitting such solar collectors to non-domestic buildings have been identified, one of which, the overcladding collector, has not been proposed previously. Problems associated with the successful installation and operation of these units have also been considered. The relative merits of a number of methods of testing passive solarenergy air-heating collectors have been investigated. A method of determining instantaneous collector efficiency based on the measurement of glazing temperature, inlet and outlet air temperature, ambient temperature and insolation has been developed. Three novel design proposals have been presented: i) a collector constructed with the insulation fitted outside, rather than inside, so that the metal body of the collector may provide more symmetrical heating of the air flow than the conventional arrangement, ii) an absorber which consisted of parallel ducts to increase the rate of heat transfer to the air, heating it symmetrically, (iii) a hinged air-deflector for conversion from the heating to the ventilation mode.

The Occupy Wall Street Movement on September 17, 2011 that involved public protest and the occupation of Zuccotti Park in New York City’s financial district, is an important example of mass public dissent in American history. The conflict that lies at the heart of the protests is between two parties identified in the data as the 99% and the 1%. An abductive, grounded research strategy to explore the language used in interpreting the circumstances and details of the event, is used in conjunction with a theoretical framework provided by C. Wright Mills (1959) and Jock Young (2011), to uncover the motivations behind the 99%’s decision to protest. What is revealed upon completion of the analysis are two broad motivations for public protest by the 99% related to issues of fairness and access, set within an historical context of growing dissent against corrupt economic institutions and the governments that sustain them.

0 / SPK / specialcollections@tulane.edu

Glass facade/curtain wall assemblies are commonly used in modern building construction as part of building envelop. This system has a number of advantages, including pleasant architectural appearance, building energy optimization, acceptable fire resistance and low maintenance. However, they pose tremendous risk towards maliciously intended acts of terror in the form of bomb blasts. The literature review conducted revealed lack of previous research on mullion strengthening/hardening. The present study has the objective of developing hardening techniques for curtain wall mullions to withstand high-intensity impulsive blast loads. Combined experimental and analytical research was conducted for the development of mullion retrofit techniques using the Shock Tube Facility of the University of Ottawa. The test program involved retrofitting existing, commercially used aluminum mullions with steel plates and subjecting them to different levels of blast loads. The mullions were retrofitted with three techniques with the help of steel L shaped angles, steel plates and with a combination of steel HSS sections and plates. The results indicated an increase of load carrying capacity of the mullions up to a factor of 2.2 with up to 30% reduction in mid-height displacements. It was shown that the steel hardening components developed full composite action with the existing aluminum section, indicating the effectiveness of the hardening technology. The analytical research followed the experimental research with the main objective of validating experimental results, as well as validating the assumption of full composite action between the core aluminum mullion and the hardening plates. The first step was to develop resistance functions followed by the validation of main analytical tool RC-Blast and the UFC charted solution. Following excellent agreement between these two analytical tools, RC-Blast was further validated against the experimental results. In addition, Pressure-impulse (P-I) diagrams were developed as design aids for different pressure-impulse combinations. The retrofit techniques developed were applied to a selected prototype building to assess their feasibility for use in practice. Two different blast threats were considered for this application. Conclusions were drawn regarding the effectiveness of the curtain wall hardening techniques for use in practice.

Hand of Glory is a collection of poems smashed together using a spotlight shining on a pseudo slasher movie language. I was attempting to talk about love, pain, and isolation by using a lexicon that was not my own to create or look at a memorial differently. It was written from 2010-2014 at UMass Amherst under the tutelage of Dara Wier, James Tate, Peter Gizzi, and Noy Holland with help from Matthew Suss, Ben Kopel, Caroline Cabrera, Anne Holmes, Gale Thompson, and many others.

The development of the so-called Görtler vortices in boundary layer flows over a concave surface leads to strong velocity gradients in both wall-normal and spanwise directions. This determines the flow structures to become more prone to secondary instabilities, which prompt to an early transition from laminar to turbulent flow, ultimately increasing the frictional drag. It is possible to circumvent these secondary instabilities by means of passive or active flow control strategies, with sensors and actuators implemented at the wall. In this thesis, the effect of wall cooling and heating on Görtler vortices developing in supersonic and hypersonic boundary layers is investigated from a numerical point of view. The wall temperature is imposed through a ramping function that decreases or increases an upstream base wall temperature in the streamwise direction. The results show that this type of wall cooling or heating has a mild (adverse) effect on the vortex energy, and a more considerable (but beneficial) effect on the wall shear stress.

<p> This report contains the results of an exploratory investigation into the strength (compressive and tensile) of the most commonly used cavity wall ties. Z, Truss, Ladder and Corrugated metal ties were tested in the Applied Dynamics Laboratory at McMaster University.</p> <p> A total of 110 specimens were constructed and tested. Fifty-five specimens were tested in compression, another 55 specimens were tested in tension. The influence of different cavity widths and lengths of mortar imbedment on the strengths of the ties were also investigated.</p> <p> The ultimate load capacity, for each tie investigated, was related to loading on a unit of wall area by taking into consideration the recommended spacings for each tie.</p> <p> A strength comparison of the ties tested was made. Finally, conclusions were drawn and recommendations made.</p> / Thesis / Master of Engineering (MEngr)