PET (positron emission tomography) scans are still in the experimental phase, as one of the newest breast cancer diagnostic techniques. It is becoming the new standard in neurology, oncology and cardiology. PET, like other nuclear medicine diagnostic and treatment techniques, involves the use of radiation. Because of the negative impact of radioactivity to our bodies the radiation doses in PET should be small. The existing computing algorithms for calculating PET images can be divided into two broad categories: analytical and iterative methods. In the analytical approach the relation between the picture and its projections is expressed by a set of integral equations which are then solved analytically. The Fourier backprojection (FBP) algorithm is a numerical approximation of this analytical solution. Iterative approaches use deterministic (ART = Algebraic Reconstructed Technique) or stochastic (EM = Expectation Maximization) algorithms. My proposed kernel density estimation (KDE) algorithm also falls also into the category of iterative methods. However, in this approach each coincidence event is considered individually. The estimate location of the annihilation event that caused each coincidence event is based on the previously assigned location of events processed earlier. To accomplish this, we construct a probability distribution along each coincidence line. This is generated from previous annihilation points by density estimation. It is shown that this density estimation approach to PET can reconstruct an image of an existing tumor using significantly less data than the standard CT algorithms, such as FBP. Therefore, it might be very promising technique allowing reduced radiation dose for patients, while retaining or improving image quality.

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The residential fabric has the capacity and role to interpret and employ the identity, priorities, values and aspirations of a society into physical manifestations of the built environment. To this effect, the residential environment is a reflection of ourselves, we are defined by the lifestyle it affords us. In the last century residential development has morphed and transformed our landscape, particularly apparent in North America, largely taking the form of suburban sprawl. Suburban living is currently the most significant residential legacy of North America. The lifestyles defined by suburban development has brought about profound impact on the socio economic aspects of our communities as well as the environment in which it inhabits. This thesis studies how suburban development has occurred over time and posits to architecturally intervene in Saskatoon, a midsize Canadian prairie city. Saskatoon displays many characteristics unique to midsize Canadian cities, however the city is currently experiencing a rapid increase in private and public investment due to above normal population increases and relatively recent economic prosperity. The work will seek to define an appropriate architectural response to the challenges facing Saskatoon housing today. This thesis seeks to understand the role of design in employing a reflection of how we choose to live; our values and aspirations. Current residential development and architecture provides the foundation and insight into how we might move forward in designing our neighbourhoods.

Typescript. / Thesis (Ph. D.)--University of Hawaii at Manoa, 1974. / Bibliography: leaves [187]-195. / xx, 195 leaves ill

Includes bibliographical references (leaves [138]-186) / xiii, 186 leaves : ill. (some col.) ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Describes the kinetics of the hepatic lipase mediated hydrolysis of phospholipids and triacylglycerol in spherical, apolipoprotein-specific reconstituted high density lipoproteins. The results show that apolipoproteins have a major impact on these processes. / Thesis (Ph.D.)--Adelaide University, Dept. of Medicine, 2001

"March 2003" / Corrections inside front cover. / Includes bibliographical references (leaves 111-167) / x, 167 leaves : ill. (some col.) ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Medicine, 2003

Thesis (M.E.F.E.)--University of Canterbury, 2008. / Typescript (photocopy). Includes bibliographical references (p. 209-215). Also available via the World Wide Web.

Diss. (sammanfattning) Uppsala : Univ., 2001. / Härtill 4 uppsatser.