title: Evaluation of detector material and radiation source position on Compton camera’s ability for multitracer imaging

authors: Uche, Chibueze Zimuzo

subjects: Compton camera

abstract: We present a study on the effects of detector material, radionuclide source and source position on the Compton camera aimed at realistic characterization of the camera's performance in multitracer imaging as it relates to brain imaging. The GEANT4 Monte Carlo simulation software was used to model the physics of radiation transport and interactions with matter. Silicon (Si) and germanium (Ge) detectors were evaluated for the scatterer, and cadmium zinc telluride (CZT) and cerium-doped lanthanum bromide (LaBr3:Ce) were considered for the absorber. Image quality analyses suggest that the use of Si as the scatterer and CZT as the absorber would be preferred. Nevertheless, two simulated Compton camera models (Si/CZT and Si/LaBr3:Ce Compton cameras) that are considered in this study demonstrated good capabilities for multitracer imaging in that four radiotracers within the nuclear medicine energy range are clearly visualized by the cameras. It is found however that beyond a range difference of about 2 cm for In-113m and F-18 radiotracers in a brain phantom, there may be a need to rotate the Compton camera for efficient brain imaging.

text: Evaluation of detector material and radiation source position on Compton camera’s ability for multitracer imaging We present a study on the effects of detector material, radionuclide source and source position on the Compton camera aimed at realistic characterization of the camera's performance in multitracer imaging as it relates to brain imaging. The GEANT4 Monte Carlo simulation software was used to model the physics of radiation transport and interactions with matter. Silicon (Si) and germanium (Ge) detectors were evaluated for the scatterer, and cadmium zinc telluride (CZT) and cerium-doped lanthanum bromide (LaBr3:Ce) were considered for the absorber. Image quality analyses suggest that the use of Si as the scatterer and CZT as the absorber would be preferred. Nevertheless, two simulated Compton camera models (Si/CZT and Si/LaBr3:Ce Compton cameras) that are considered in this study demonstrated good capabilities for multitracer imaging in that four radiotracers within the nuclear medicine energy range are clearly visualized by the cameras. It is found however that beyond a range difference of about 2 cm for In-113m and F-18 radiotracers in a brain phantom, there may be a need to rotate the Compton camera for efficient brain imaging.

year: 2012

title: Three Aspects of Wang Tuoh - A Contemporary Taiwanese Intellectual

authors: Morrison, John Brendon

subjects: Wang, Tuoh

abstract: This thesis presents English translations of three pieces of work by the Taiwanese intellectual Wang Tuoh. Wang Tuoh’s works range from short stories and novels to literary criticism, moral essays and newspaper opinion pieces. The exact form of his writings varied according to the political conditions in Taiwan at the time he wrote them. 
The first piece is Wang’s novella Auntie Jinshui, considered the centrepiece of Wang’s Badouzi series of stories. Wang’s writing was associated with the Nativist school of writers, which was to form part of the first organised cultural opposition to the rule of the authoritarian KMT in Taiwan. The second piece is Wang’s essay “It’s ‘Literature of the Present Reality’, not ‘Nativist’ Literature”, which was written in response to criticism of Nativist writers by KMT supporters. In this essay Wang supplies an important definition of the Nativist school, and broadens the scope of Nativism from being merely of the countryside, to including all of Taiwan’s ‘Present Reality’. The third piece is Wang’s moral essay “Finding the Basis of Success out of the Experience of Failure” which sums up much of Wang’s personal philosophy.
In the essay part of the thesis, a description is given of the historical background that lead to the complex society of 1970s Taiwan when Wang began writing. Taiwan’s history as a geographic crossroads between the interests of China, Japan and the West means that Taiwan society, and its intellectuals, can call upon a socio-cultural heritage that draws upon Chinese, Japanese and Western influences in addition to the local Taiwanese culture. 
Wang’s works are analysed within a conceptual framework that shows how these multiple influences interact within Taiwan’s social, cultural and intellectual worlds. Wang’s roles as writer, literary critic, and moral essayist are all simply aspects of his larger role as an intellectual in Taiwan. In exploring Wang’s biography and relating it to larger historical events, it can be shown that Wang’s writings and his role as an intellectual changed in response to the changing degree of political freedom in Taiwan.
The thesis concludes that Wang has consistently regarded his primary role as being an intellectual commentator, and that he has consistently called upon his countrymen to reflect upon the importance of social justice and democracy in Taiwan.

text: Three Aspects of Wang Tuoh - A Contemporary Taiwanese Intellectual This thesis presents English translations of three pieces of work by the Taiwanese intellectual Wang Tuoh. Wang Tuoh’s works range from short stories and novels to literary criticism, moral essays and newspaper opinion pieces. The exact form of his writings varied according to the political conditions in Taiwan at the time he wrote them. 
The first piece is Wang’s novella Auntie Jinshui, considered the centrepiece of Wang’s Badouzi series of stories. Wang’s writing was associated with the Nativist school of writers, which was to form part of the first organised cultural opposition to the rule of the authoritarian KMT in Taiwan. The second piece is Wang’s essay “It’s ‘Literature of the Present Reality’, not ‘Nativist’ Literature”, which was written in response to criticism of Nativist writers by KMT supporters. In this essay Wang supplies an important definition of the Nativist school, and broadens the scope of Nativism from being merely of the countryside, to including all of Taiwan’s ‘Present Reality’. The third piece is Wang’s moral essay “Finding the Basis of Success out of the Experience of Failure” which sums up much of Wang’s personal philosophy.
In the essay part of the thesis, a description is given of the historical background that lead to the complex society of 1970s Taiwan when Wang began writing. Taiwan’s history as a geographic crossroads between the interests of China, Japan and the West means that Taiwan society, and its intellectuals, can call upon a socio-cultural heritage that draws upon Chinese, Japanese and Western influences in addition to the local Taiwanese culture. 
Wang’s works are analysed within a conceptual framework that shows how these multiple influences interact within Taiwan’s social, cultural and intellectual worlds. Wang’s roles as writer, literary critic, and moral essayist are all simply aspects of his larger role as an intellectual in Taiwan. In exploring Wang’s biography and relating it to larger historical events, it can be shown that Wang’s writings and his role as an intellectual changed in response to the changing degree of political freedom in Taiwan.
The thesis concludes that Wang has consistently regarded his primary role as being an intellectual commentator, and that he has consistently called upon his countrymen to reflect upon the importance of social justice and democracy in Taiwan.

year: 2004

title: An evaluation of Te Rau Puawai workforce 100: Addressing the recruitment and retention of Maori students in tertiary education institutions: A literature review

authors: Nikora, Linda Waimarie

subjects: Maori students

abstract: To evaluate the Te Rau Puawai programme, the Ministry of Health commissioned the
Maori and Psychology Research Unit of the University of Waikato in July 2001. The
overall aim of the evaluation was to provide the Ministry with a clearer understanding
of the programme including: the perceived critical success factors, the barriers if any
regarding Te Rau Puawai, the impact of the programme, the extent to which the
programme may be transferable, gaps in the programme, and suggested
improvements.
To achieve this end, a review of relevant literature was undertaken to provide a
framework to understand the patterns that arose from the information that we
collected as part of this evaluation.
The review of literature is presented in this technical report.

text: An evaluation of Te Rau Puawai workforce 100: Addressing the recruitment and retention of Maori students in tertiary education institutions: A literature review To evaluate the Te Rau Puawai programme, the Ministry of Health commissioned the
Maori and Psychology Research Unit of the University of Waikato in July 2001. The
overall aim of the evaluation was to provide the Ministry with a clearer understanding
of the programme including: the perceived critical success factors, the barriers if any
regarding Te Rau Puawai, the impact of the programme, the extent to which the
programme may be transferable, gaps in the programme, and suggested
improvements.
To achieve this end, a review of relevant literature was undertaken to provide a
framework to understand the patterns that arose from the information that we
collected as part of this evaluation.
The review of literature is presented in this technical report.

year: 2002-05-01