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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.
51

Construction of the Intensity-Duration-Frequency (IDF) Curves under Climate Change

2014 December 1900 (has links)
Intensity-Duration-Frequency (IDF) curves are among the standard design tools for various engineering applications, such as storm water management systems. The current practice is to use IDF curves based on historical extreme precipitation quantiles. A warming climate, however, might change the extreme precipitation quantiles represented by the IDF curves, emphasizing the need for updating the IDF curves used for the design of urban storm water management systems in different parts of the world, including Canada. This study attempts to construct the future IDF curves for Saskatoon, Canada, under possible climate change scenarios. For this purpose, LARS-WG, a stochastic weather generator, is used to spatially downscale the daily precipitation projected by Global Climate Models (GCMs) from coarse grid resolution to the local point scale. The stochastically downscaled daily precipitation realizations were further disaggregated into ensemble hourly and sub-hourly (as fine as 5-minute) precipitation series, using a disaggregation scheme developed using the K-nearest neighbor (K-NN) technique. This two-stage modeling framework (downscaling to daily, then disaggregating to finer resolutions) is applied to construct the future IDF curves in the city of Saskatoon. The sensitivity of the K-NN disaggregation model to the number of nearest neighbors (i.e. window size) is evaluated during the baseline period (1961-1990). The optimal window size is assigned based on the performance in reproducing the historical IDF curves by the K-NN disaggregation models. Two optimal window sizes are selected for the K-NN hourly and sub-hourly disaggregation models that would be appropriate for the hydrological system of Saskatoon. By using the simulated hourly and sub-hourly precipitation series and the Generalized Extreme Value (GEV) distribution, future changes in the IDF curves and associated uncertainties are quantified using a large ensemble of projections obtained for the Canadian and British GCMs (CanESM2 and HadGEM2-ES) based on three Representative Concentration Pathways; RCP2.6, RCP4.5, and RCP8.5 available from CMIP5 – the most recent product of the Intergovernmental Panel on Climate Change (IPCC). The constructed IDF curves are then compared with the ones constructed using another method based on a genetic programming technique. The results show that the sign and the magnitude of future variations in extreme precipitation quantiles are sensitive to the selection of GCMs and/or RCPs, and the variations seem to become intensified towards the end of the 21st century. Generally, the relative change in precipitation intensities with respect to the historical intensities for CMIP5 climate models (e.g., CanESM2: RCP4.5) is less than those for CMIP3 climate models (e.g., CGCM3.1: B1), which may be due to the inclusion of climate policies (i.e., adaptation and mitigation) in CMIP5 climate models. The two-stage downscaling-disaggregation method enables quantification of uncertainty due to natural internal variability of precipitation, various GCMs and RCPs, and downscaling methods. In general, uncertainty in the projections of future extreme precipitation quantiles increases for short durations and for long return periods. The two-stage method adopted in this study and the GP method reconstruct the historical IDF curves quite successfully during the baseline period (1961-1990); this suggests that these methods can be applied to efficiently construct IDF curves at the local scale under future climate scenarios. The most notable precipitation intensification in Saskatoon is projected to occur with shorter storm duration, up to one hour, and longer return periods of more than 25 years.
52

Charakterizace plodů aronie (Aronia melanocarpa) a muchovníku (Amelanchier alnifolia) / Characterisation of chokeberry and saskatoon berry fruits

Burdějová, Lenka January 2014 (has links)
Diploma thesis deals with the characterization of chokeberry (Aronia melanocarpa) and saskatoon berry (Amelanchier alnifolia) fruits. The theoretical part focuses on the botanical classification, chemical composition, curative effects and the use of chokeberry and saskatoon berry in the food industry. Further, the attention is also devoted to a review of methods for the determination of important antioxidants, specialized on the determination of polyphenols, anthocyanins, ascorbic acid and total antioxidant activity. The experimental part of the work deals with the determination of selected parameters in different varieties of chokeberry and serviceberry, harvested in 2012 and 2013 using spectroscopic and chromatographic techniques with an emphasis on effect of solvent (50% ethanol, destilled water, DMSO). Specifically total content of polyphenols and anthocyanins, color characteristics using the CIE L*a*b* system and the ability of the sample to reduce the iron are determined using the UV-VIS-NIR spectroscopy. Further ascorbic acid concentration in individual extracts is quantified by High performance liquid chromatography coupled with a diode array detector and the total antioxidant activity is characterized by electron paramagnetic resonance involving •DPPH and ABTS•+ assays.
53

Planning and development in fragmented city-regions : a case study of Saskatoon's Willows Residential Development (1992-2004)

Thomarat, Jacqueline Anne 20 August 2007
This thesis examines a protracted planning process in the Saskatoon city-region. More specifically, it examines the planning process which occurred between 1992 and 2004 regarding a residential housing development on The Willows Golf Course. This thesis reveals that the protracted planning process was the result of several factors including: the fragmented character of governance; the planning and development policies and decision-making process in the Saskatoon city-region; the multiplicity of actors; and the political dynamics that arose in an intermunicipal conflict between the City of Saskatoon and the Rural Municipality of Corman Park. <p>The thesis concludes that this case study provides some important lessons for both governments and planners in the Saskatoon city-region as well as other city-regions on opportunities and obstacles for improving planning processes. The first major lesson is that problems emerge when an innovative proposal lands in the context of an antiquated policy framework that cannot adequately deal with it. The second major lesson is that the current regional planning mechanisms are not conducive to comprehensive long-term planning for the city-region. The third lesson is that in some cases the opposition is to changes to the traditional decision-making processes as much as it is to the proposed project. The fourth major lesson is that timely and effective communication is very important for determining character of the political dynamics surrounding a development proposal. Miscommunication can create problematic political dynamics. The fifth major lesson is that economic considerations are inextricably tied to the politics of planning and development.<p>This study concludes with two major recommendations. The first recommendation is that in order to overcome the negative outcomes of fragmented governance systems, formal structures and protocols must be improved to ensure that municipalities continue to communicate effectively with one another in difficult circumstances created by increasing development pressure, especially when they are likely to disagree on a particular development proposal. The second recommendation is that given that there is no guarantee that neighbouring municipal governments can always reach agreement between them, legitimate and efficient dispute settlement mechanisms are required both at the regional level and at the provincial level.
54

Planning and development in fragmented city-regions : a case study of Saskatoon's Willows Residential Development (1992-2004)

Thomarat, Jacqueline Anne 20 August 2007 (has links)
This thesis examines a protracted planning process in the Saskatoon city-region. More specifically, it examines the planning process which occurred between 1992 and 2004 regarding a residential housing development on The Willows Golf Course. This thesis reveals that the protracted planning process was the result of several factors including: the fragmented character of governance; the planning and development policies and decision-making process in the Saskatoon city-region; the multiplicity of actors; and the political dynamics that arose in an intermunicipal conflict between the City of Saskatoon and the Rural Municipality of Corman Park. <p>The thesis concludes that this case study provides some important lessons for both governments and planners in the Saskatoon city-region as well as other city-regions on opportunities and obstacles for improving planning processes. The first major lesson is that problems emerge when an innovative proposal lands in the context of an antiquated policy framework that cannot adequately deal with it. The second major lesson is that the current regional planning mechanisms are not conducive to comprehensive long-term planning for the city-region. The third lesson is that in some cases the opposition is to changes to the traditional decision-making processes as much as it is to the proposed project. The fourth major lesson is that timely and effective communication is very important for determining character of the political dynamics surrounding a development proposal. Miscommunication can create problematic political dynamics. The fifth major lesson is that economic considerations are inextricably tied to the politics of planning and development.<p>This study concludes with two major recommendations. The first recommendation is that in order to overcome the negative outcomes of fragmented governance systems, formal structures and protocols must be improved to ensure that municipalities continue to communicate effectively with one another in difficult circumstances created by increasing development pressure, especially when they are likely to disagree on a particular development proposal. The second recommendation is that given that there is no guarantee that neighbouring municipal governments can always reach agreement between them, legitimate and efficient dispute settlement mechanisms are required both at the regional level and at the provincial level.
55

The dryland diaries

2014 September 1900 (has links)
The Dryland Diaries is a multigenerational narrative in the epistolary style, a tale of four women, central character Luka; her mother Lenore; grandmother Charlotte; and great-grandmother Annie – cast in the Quebecoise tradition of the roman du terroir, invoking place and family, the primal terroir of a storyteller. The novel is driven by three acts of violence – the possible murder of Annie’s husband, Jordan, by her Hutterite father; the rape of Charlotte; and the probable murder of Lenore by a notorious serial killer. Set in rural Saskatchewan and Vancouver, Luka, a single mother, finds Annie’s and Charlotte’s journals in the basement of her farm home, where both her predecessors also lived. She reads their stories while attempting to come to terms with her search for her missing mother, and with her attraction to her former flame, Earl, now married. Luka learns that Jordan disappeared shortly after the Canadian government enacted conscription for farmers in the First World War, when Annie became a stud horsewoman, her daughter Charlotte born before the war ended. Letters and newspaper clippings trace the family’s life through the drought and Great Depression; then Charlotte’s diaries reveal her rape at Danceland during the Second World War. Her daughter, Lenore, grows up off-balance emotionally, and abandons her daughters. Luka returns to Vancouver and learns her mother’s fate. Told from Luka’s point of view, in first-person narrative with intercutting diary excerpts and third-person narratives, the novel examines how violence percolates through generations. It also examines how mothers influence their children, the role of art, how the natural world influences a life, and questions our definition of “home.” At its heart, the novel is a story about what makes a family a family, about choices we make toward happiness, and about how violence perpetuates itself through the generations. Inspired by Margaret Lawrence’s The Stone Angel, Carol Shields’ The Stone Diaries, and the place-particular writing of Annie Proulx and Guy Vanderhaeghe, The Dryland Diaries paints a family portrait of loss, hope and redemption, locating it on the boundaries of historical fiction, firmly within the realm of epistolary and intergenerational narrative.
56

The Saskatchewan adult attendance centre project (1979-84) : a case history

Collier, Dilys Mary 25 October 2010
The purpose of this case history was to view the development of the Saskatchewan Adult Attendance Centre Project through the perspective of currently accepted, but selected, adult education philosophy, principles, and techniques. The Project was a mandatory adult education component of Probation Services, a program for adult offenders operated by Saskatchewan Corrections. The story of the evolution from 1979 to 1984 of the two Adult Attendance Centres of the Project, based in the cities of Regina and Saskatoon, was presented in the context of an historical overview of the education of adults in the Corrections systems of Britain, the United States, and Canada. The Attendance Centres were not set up as adult education institutions. They were intended to be cost effective alternatives to incarceration. The study maintained that sentencing that included attendance at the Centres was more cost effective for the provincial government than incarceration or traditional probation. It argued that the kind of education presented to adult probationers in the Centre programs often strayed from currently accepted adult education philosophy, principles, and techniques. None the less, significant potential existed in the Centres for the creation of more meaningful adult education opportunities for persons on probation.
57

The Saskatchewan adult attendance centre project (1979-84) : a case history

Collier, Dilys Mary 25 October 2010 (has links)
The purpose of this case history was to view the development of the Saskatchewan Adult Attendance Centre Project through the perspective of currently accepted, but selected, adult education philosophy, principles, and techniques. The Project was a mandatory adult education component of Probation Services, a program for adult offenders operated by Saskatchewan Corrections. The story of the evolution from 1979 to 1984 of the two Adult Attendance Centres of the Project, based in the cities of Regina and Saskatoon, was presented in the context of an historical overview of the education of adults in the Corrections systems of Britain, the United States, and Canada. The Attendance Centres were not set up as adult education institutions. They were intended to be cost effective alternatives to incarceration. The study maintained that sentencing that included attendance at the Centres was more cost effective for the provincial government than incarceration or traditional probation. It argued that the kind of education presented to adult probationers in the Centre programs often strayed from currently accepted adult education philosophy, principles, and techniques. None the less, significant potential existed in the Centres for the creation of more meaningful adult education opportunities for persons on probation.

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