A written report of a paper titled Holographic dual of collimated radiation by Veronika E. Hubeny where a new and easier method is proposed to estimate the “radiation due to an accelerated quark in a strongly coupled medium”. The method is able to reproduce the results from an earlier paper without the need of solving the linearized Einstein equations but by way of calculating geodesics in AdS using the AdS/CFT correspondence and the gravitational dual of the quark being a string. A quick introduction to synchrotron radiation and general relativity is given after which the AdS/CFT correspondence is introduced along with the results and method of V. Hubeny. / A bachelor thesis in theoretical physics.

Recently, stereo vision has been widely used in many applications, and depth map is important information in stereo vision. In general, depth map can be generated from the disparity using stereo matching based on two input images of different viewing positions. Due to the large computation complexity, software implementation of stereo matching usually cannot achieve real-time computation speed. In this thesis, we propose hardware implementations of stereo matching to speed up the generation of depth map. The proposed design uses a global optimization method, called dynamic programming, to find the disparity based on two input images: left image and right image. It consists of three main processing steps: matching cost computation (M.C.C.), minimum cost accumulation (M.C.A.), and disparity optimization (D.O.). The thesis examines the impact of different pixel operation orders in M.C.C and M.C.A modules on the cost of hardware. In the design of D.O. module, we use two different approaches. One is a Systolic-Like structure with streaming processing, and the other is memory-based design with low hardware cost. The final architecture with pipelining and memory-based D.O. can save a lot of hardware cost and achieve high throughput rate for processing a sequence of image pairs.

In this study, the hydrology and physical, chemical and biological variables of a shallow lake system including the Lakes Mogan and Eymir between 1997-2005 were evaluated. In Lake Eymir, a biomanipulation study was conducted between August, 1998 &ndash / December, 1999. Upon biomanipulation, Lake Eymir shifted to clearwater state with submerged vegetation domination during 2000-2003. However, in 2004, the lake shifted back to algae-dominated turbid state since the buffer mechanisms provided by submerged plants were absent. In the summer of 2005, fish kills were observed due to algal bloom. However, due to increasing hydraulic residence time in the lake, internal processes became more important for nutrients. Lake Mogan faces seasonal and interannual water level fluctuations. During the low water levels experienced in 2001 and 2005, which coincided with the high hydraulic residence times, the in-lake phosphorus amount was controlled by internal processes rather than external loading. Moreover, results revealed that hydrology and submerged plants were important in the ecology of Lake Mogan. Furthermore, the relationship between the phytoplankton, zooplankton and the environment in Lakes Eymir and Mogan, which was predicted via Canonical Corresponding Analysis, revealed that nutrients and water transparency were both important for plankton communities. Both the top-down and bottom up effects were valid in Lake Eymir, while only the bottom-up effect and submerged plants were important for Lake Mogan. Finally, the present study provided a good example for the submerged plant dominated clearwater state triggered by biomanipulation, and the impact of hydrology on the ecology of shallow lakes.

Computation of the position and orientation of an object with respect to a camera from its images is called pose estimation problem. Pose estimation is one of the major problems in computer vision, robotics and photogrammetry. Object tracking, object recognition, self-localization of robots are typical examples for the use of pose estimation. Determining the pose of an object from its projections requires 3D model of an object in its own reference system, the camera parameters and 2D image of the object. Most of the pose estimation algorithms require the correspondences between the 3D model points of the object and 2D image points. In this study, four well-known pose estimation algorithms requiring the 2D-3D correspondences to be known a priori / namely, Orthogonal Iterations, POSIT, DLT and Efficient PnP are compared. Moreover, two other well-known algorithms that solve the correspondence and pose problems simultaneously / Soft POSIT and Blind- PnP are also compared in the scope of this thesis study. In the first step of the simulations, synthetic data is formed using a realistic motion scenario and the algorithms are compared using this data. In the next step, real images captured by a calibrated camera for an object with known 3D model are exploited. The simulation results indicate that POSIT algorithm performs the best among the algorithms requiring point correspondences. Another result obtained from the experiments is that Soft-POSIT algorithm can be considered to perform better than Blind-PnP algorithm.

Title from PDF of title page. / Document formatted into pages; contains 64 pages. / Thesis (M.S.C.S.)--University of South Florida, 2003. / Includes bibliographical references. / Text (Electronic thesis) in PDF format. / ABSTRACT: Predicting breast tissue deformation is of great significance in several medical applications such as surgery, biopsy and imaging. In breast surgery, surgeons are often concerned with a specific portion of the breast, e.g., tumor, which must be located accurately beforehand. Also clinically it is important for combining the information provided by images from several modalities or at different times, for the planning and guidance of interventions. Multi-modality imaging of the breast obtained by mammography, MRI and PET is thought to be best achieved through some form of data fusion technique. However, images taken by these various techniques are often obtained under entirely different tissue configurations, compression, orientation or body position. In these cases some form of spatial transformation of image data from one geometry to another is required such that the tissues are represented in an equivalent configuration. / ABSTRACT: We constructed the 3D biomechanical models for this purpose using Finite Element Methods (FEM). The models were based on phantom and patient MRIs and could be used to model the interrelation between different types of tissue by applying displacements of forces and to register multimodality medical images. / System requirements: World Wide Web browser and PDF reader. / Mode of access: World Wide Web.

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The current program of research tests the following main hypotheses: 1) Synesthetic correspondence is an amodal property that serves to bind intersensory signals and manipulating this correspondence between pairs of audiovisual signals will affect performance on a temporal order judgment (TOJ) task; 2) Manipulating emphasis during a TOJ task from spatial to temporal aspects will strengthen the influence of task-irrelevant auditory signals; 3) The degree of dimensional overlap between audiovisual pairs will moderate the effect of synesthetic correspondence on the TOJ task; and 4) There are gaps in current perceptual theory due to the fact that synesthetic correspondence is a potential confound that has not been sufficiently considered in the design of perception research. The results support these main hypotheses. Finally, potential applications for the findings presented here are discussed.

Eight home economics teachers and I took up the invitation of Coulter (1993) to explore the work of Mikhail Bakhtin as a way of making us more "wide awake" (Greene, 1978) and "answerable" (Clark & Holquist, 1984) for our teaching and researching practices. The study involved learning from our own experiences inquiring into global home economics education. We met as a group once a month, and I met periodically with each teacher, for one semester. Using action research, conceptualized as grounded ethical practice, the research methods were primarily dialogues as conversational inquiry, whereby greater emphasis was given to listening and hearing than ocularcentric methods of gathering data. The three research questions that guided the study related to learning from experience in: the substantive area, in this case developing curriculum for a global perspective in home economics; the action research process, in this case as a process to effect a specific educational change; and the self or personal growth, in this case primarily professional development (Reinharz, 1992). This research report includes narrative and reflective accounts from three forms of action research within the study: teachers cooperating with an outside researcher where the researcher defines the topic and purpose of the research; teachers collaborating with a researcher where the research is seen as mutually beneficial and the topics and purposes are jointly defined; and teachers defining and conducting their own research independently or in collaboration with one another. It captures the diversity and complexity of the teachers' and the researcher's experiences and explores some of the struggles, the tensions, and the inner turmoil associated with action research for educational change. As a result of this research, we have become more consciously intentional in our practices and more thoughtful and reflective of their consequences. The phrase theorizing practice/practicing theorizing captures this notion as the teachers and I turned/retumed to the ethical questions that hold us in education.

This dissertation is a scholarly edition of the correspondence between the Canadian poet Irving Layton and the critic and historian of Canadian literature, Desmond Pacey; on November 3, 1954, Desmond Pacey wrote to Contact Press, inviting the poets Irving Layton, Louis Dudek and Raymond Souster to submit their recent work for discussion in an article on Canadian literature for The International Year Book. Pacey and Layton met in Montreal a few months later, and so began a long friendship and a lengthy correspondence which continued until Pacey’s death on July 4, 1975. The correspondence is an extremely important document in the history of Canadian poetry and criticism in the decisive decades following World War II because it so directly and extensively explores the crucial issues of the times: the function of the poet and the critic in contemporary society; the debate over a “cosmopolitan” versus a “native” aesthetic; the debate over a “mythopoeic” versus a “realist” approach to the creation of, and criticism of, poetry; and the attempt to define a position for the Jewish writer in a gentile society. But aside from this prolonged and invaluable theoretical discourse, and aside from the countless useful insights into the life and work of practically every writer active in Canada between 1954-1975, the letters between the two men are important because the two men were so vitally important to the development of a viable Canadian literature. The basic principle of this project’s editorial philosophy is the decision to abjure the “editorial pedantries” of the diplomatic text which tend to exclude the non—specialist educated public, and to assume greater flexibility in the standardization and regularization of spelling, punctuation, capitalization, abbreviation and matters of format——placement of addresses, closings, postscripts and marginalia. Headnotes contain all textual information about the letter; transcriptions are in the main literal, but in the interest of consistency some standardization has been imposed. Footnotes follow each letter; cross—references are by letter and, where applicable, note number; when the reference is to a letter with a single footnote, no number is cited. These almost three thousand annotations are employed to identify individuals referred to in the text, to provide publication information on the works of Layton, Pacey, and numerous other individuals referred to in the text, to document and frequently quote from the reviews, articles, radio and television programs they discuss, to elucidate references to current events, and to provide miscellaneous but necessary background information on matters ranging from the private lives of the two correspondents to majcir vnts and isuë in the history of Canadian li’áttñ.

This thesis is an investigation of external biosecurity and its application to risk-based surveillance approaches in the southern Ontario swine industry. In each of two datasets, the best number of groups to describe biosecurity practices was identified, resulting in two groups with high biosecurity standards and one group with low biosecurity standards. Multinomial logistic regression models identified herd density, herd size, and herd type among significant predictors of biosecurity group membership. A map of southern Ontario that can be used as a tool in the risk-based surveillance of contagious swine diseases was developed using geographic information about swine density, and the distribution of herds belonging to the high biosecurity groups. Finally, multiple correspondence analysis examined how individual biosecurity practices form strategies on sow farms. Some practices that are generally considered high-risk were closely associated with other practices that mitigate the risk, suggesting that evaluation of the overall strategy is essential for complete assessment of biosecurity. / The Ontario Ministry of Agriculture, Food and Rural Affairs (under the Emergency Management research theme); Ontario Pork; the Ontario Pork Industry Council's Swine Health Advisory Board; the Natural Sciences and Engineering Research Council of Canada;