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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.
831

[Re]claim 2013 - reconciliation of urban place & indigenous meaningfulness reintegration with ecological systems reclaiming infrastructure for a new typology

Erasmus, Rudolph 03 December 2012 (has links)
The methodologies of Modernism and Industrialization and the rigorous application thereof, in isolation, led to a condition where space and place is fragmented, segregated and disconnected by lost, decayed and left over space. It separated the spatial and experiential whole from the human user who inhabits; depends on and experience the space, and failed to contribute to a meaningful livable public realm. The loss in character; uniqueness and indigenous meaningfulness have led to a condition where humans are alienated from their original invention for community: the city. The inter-relational connection between ecological-; anthropological- and technological systems are disconnected resulting in a condition where resource consumption and availability are no longer in relational proportion to one another and where revolutionary intervention is needed to ensure the continuation of the current living standard and requirements of humanity without degrading the quality for future generations. This dissertation focuses on the reintegration of anthropological; ecological and technological systems into a holistic, co-habitational intervention on urban; building and detail scale and the establishment of a human and nature centric spatially orientated framework. Attempting to reconsolidate lost; fragmented; left over; mechanistic&decayed space and structure along the ecological corridor of Hammanskraal Industrial zone. / Dissertation MArch(Prof)--University of Pretoria, 2012. / Architecture / MArch(Prof) / Unrestricted
832

The making of Graham Street market : culture and politics in spatial production

Leung, Ming Fai 01 January 2012 (has links)
No description available.
833

Afrikaner Nationalism and the Production of a White Cultural Heritage: An analysis of selected works undertaken by Dirk Visser and Gabriel Fagan from 1967-1993

Darke, Nicola Susan January 2012 (has links)
This dissertation entitled The Afrikaner Nationalism and the Production of a White Cultural Heritage: An analysis of selected works undertaken by Dirk Visser and Gabriel Fagan from 1967-1993 examines the construct of a white settler heritage as promoted and implemented through various restorations and reconstructions of DutchNOC buildings. The primary rationale of this study is to critically assess the actions of the main protagonists in the creation of this heritage, that is, the Department of Public Works, the National Monuments Council, Anton Rupert (and his Historic Homes of South Africa), the Simon van der Stel Foundation, the Institute of South African Architects and the provincial institutes. Directly related to this issue is the assessment as to whether the isolationist nature of the South Africa contributed to the plethora of stylistic restoration and reconstructions undertaken during the apartheid era. This study comprises two sections: first, the examination of the intellectual theoretical texts of Foucault, Nora and others pertaining to power, ideology, history and memory, as well as the seminal texts of Jokilehto and Choay which discuss the stylistic and historicist conservation theories of Viollet-le-Duc; and second, the analysis of selected case studies undertaken by Fagan on behalf of the state (The Castle of Good Hope and De Tuynhuys) and Visser on behalf of Rupert and Historic Homes of South Africa (Drostdy of Graaff-Reinet).
834

Impacts of Small, Surface-Release Dams on Stream Temperature and Dissolved Oxygen in Massachusetts

Zaidel, Peter 12 July 2018 (has links)
Dams fragment streams and rivers, with >14,000 in New England alone, and have the potential to significantly alter the physical, chemical, and biological characteristics of lotic systems. For example, dams can alter temperature and dissolved oxygen (DO) regimes, which can, in turn, affect species distributions, whole system metabolism, and nutrient processing rates. Moreover, changes in temperature signal life history cues (e.g., emergence, egg-hatching, migration) for many species of aquatic organisms, and present another avenue for dams to alter biotic communities. Despite the prevalence of small dams in the landscape and their potential significant impacts on temperature and DO, dams have not been well-studied and published impacts vary widely across sites. Given the variation in impact, I sought to quantify the impacts of small dams to stream temperature and DO, and to determine the drivers of inter- and intra-site variation in response. To accomplish this, I deployed 160 continuous temperature data loggers at 30 small, surface-release dams in Massachusetts. The majority of sites (61%) had higher temperatures downstream of the dam compared to upstream and most (85%) experienced decreasing temperatures with increasing distance downstream of the dam, such that the warmest temperatures were located closest to the dam. At approximately half of the temperature sites, flow had a homogenizing effect on temperatures throughout the study reach, whereby impacts were more pronounced (e.g., more warming, faster decay rates) under periods of low flow than under high flow conditions. Magnitude of warming varied greatly among sites, and this variation was explained best by landscape position and reservoir volume, with dams in smaller watersheds and with larger reservoir volumes experiencing greater warming magnitudes. Forest cover, dam height, and the presence of an auxiliary spillway best predicted the downstream temperature decay rate, with temperatures cooling fastest downstream of shorter dams in forested basins that did not have an auxiliary spillway. I used continuous DO loggers upstream, within the impoundment, and downstream of 12 dams to identify dam impacts to DO. Most sites experienced lower DO (66%) within the impoundment compared to upstream; however, 58% of the sites showed no difference in diel ranges between these reaches. The effect of dams on downstream DO was mixed, with increases, no change, and decreases relative to upstream condition; however, the majority of sites (58%) experienced a suppressed downstream diel range relative to upstream. The upstream slope, basin size, and dam height drove the impoundment response, such that dams with steeper upstream reach slopes, located in smaller basins, and with shorter dam heights experienced the greatest decreases in impoundment DO relative to upstream. Differences between downstream and upstream DO were best explained by upstream slope and impoundment volume, whereby sites with steeper upstream reaches and larger volumes of water within the impoundment experienced the largest decreases in downstream DO when compared to upstream reaches. These results may help managers prioritize dam removal at sites where a dam is having larger and more negative (e.g., elevated temperatures, decreased DO) impacts, and therefore where the greatest benefits should occur following restoration.
835

Recursive Non-Local Means Filter for Video Denoising

Almahdi, Redha A. January 2016 (has links)
No description available.
836

Improving Rangeland Seedling Recruitment Using Fungicide Seed Coatings and Golden Eagle Reproductive Success in Relation to Explosive Military Tests and Trainings

Hoose, Benjamin William 30 November 2020 (has links)
The objective of the first chapter of this thesis was to determine whether fungicide seed coatings constitute an effective strategy for increasing seedling recruitment in restoration scenarios in the Intermountain West. We tested a mixture of four fungicides that address potential fungal pathogens to bluebunch wheatgrass, a dominant bunchgrass that is commonly used in restoration. Across two sites and three years, we found that the fungicide seed coating increased emergence in five of the six sites and years, with an average increase of 59.1% over the control. There was a strong interaction (P < 0.001) between the effects of fungicide treatment, the year and the site on emergence. This interaction was likely related to the effects of the hydrothermal microsite environment on disease severity. Further research is necessary to fully understand the conditions under which fungicide seed coatings are most likely to be effective. The objectives the second chapter of this thesis were to 1) estimate the effects of golden eagle nest proximity to explosive disturbances on reproductive success given other relevant habitat variables (e.g. indices of topography and vegetation), and 2) determine the relative importance of nest proximity to explosive disturbances as a predictor of golden eagle reproductive success compared to other relevant habitat variables. Reproductive success data were collected from nesting territories within and surrounding land controlled and managed by the US Department of Defense. We fit the reproductive survey data using generalized linear mixed-effects models comprised of unique, hypothesis-based sets of habitat variables. We compared the models using AICc-based model selection processes. Given the best approximating model, we found no evidence that the likelihood of reproductive success was affected by nest proximity to explosive disturbances (P = 0.460). We further found nest proximity to explosive disturbances consistently ranked in the bottom 50% of relative variable importance. These results may indicate golden eagle tolerance or habituation to explosive military tests and trainings. Although the two chapters of this thesis are disjointed, they are loosely unified by the ecological importance of disturbance, invasive species, and restoration within the Great Basin ecoregion.
837

Flow estimation for stream restoration and wetland projects in ungaged watersheds using continuous simulation modeling

Henry, Janell Christine 06 May 2013 (has links)
More than a billion dollars are spent annually on stream restoration in the United States (Bernhardt et al., 2005), but the science remains immature. A promising technique for estimating a single or range of design discharges is the generalization of a parsimonious conceptual continuous simulation model. In this study the Probability Distributed Model (PDM), was generalized for the Maryland and Virginia Piedmont. Two hundred and sixty years of daily average flow data from fifteen watersheds were used to calibrate PDM. Because the application of the study is to stream restoration, the model was calibrated to discharges greater than two times baseflow and less than flows with a return period of ten years. The hydrologic calibration parameters were related to watershed characteristics through regression analysis, and these equations were used to calculate regional model parameters based on watershed characteristics for a single "ungaged" independent evaluation watershed in the region. Simulated flow was compared to observed flow; the model simulated discharges of lower return periods moderately well (e.g., within 13% of observed for a flow with a five year return period). These results indicate this technique may be useful for stream restoration and wetland design. / Master of Science
838

Exploring Predictors of Self-Forgiveness

Coomes, Steven P. 12 1900 (has links)
Self-forgiveness is a growing sub-field of the broader study of forgiveness, and initial research has linked self-forgiveness to positive mental and physical health outcomes. However, the extant literature on self-forgiveness is in its infancy, and there is a need for further research to understand the predictors of self-forgiveness and the clinical implications that might follow. The current study aimed to build on the extant literature by exploring two sets of predictors of self-forgiveness: (1) the four Rs as proposed in Cornish and Wade's four-R therapeutic model of self-forgiveness (i.e., responsibility, remorse, restoration, and renewal) and (2) personality as measured by the Big Five. This study also explored how responsibility for the offense and humility might moderate the relationship between self-forgiveness and well-being. Participants were undergraduates recruited from a large, public university in the southwestern United States. They were instructed to describe a recent interpersonal offense they had committed and complete a questionnaire. The overall results suggest that there is a negative cross-sectional relationship between responsibility, remorse, and restoration with self-forgiveness and that, when taken together, the four-Rs account for a significant amount of variance in self-forgiveness. Neuroticism was negatively associated with self-forgiveness while conscientiousness and extraversion were positively associated with self-forgiveness. The Big Five collectively accounted for a significant amount of variance in self-forgiveness. Finally, neither responsibility or humility were found to moderate the relationship between self-forgiveness and well-being. Limitations, suggestions for future research, and clinical implications are discussed.
839

Construction, Adaptation, and Preservation of Earth Homes on the Northern Plains

Kurtz, Robert Kevin January 2018 (has links)
The earth home, in its many varieties and styles, played an important role in the development of the American Great Plains during the mid-nineteenth century. However, the lack of further study into the material culture of these homes has allowed many of these homes to be misrepresented in the historical record as temporary shelters. Not all of the earth homes constructed during this period were temporary. Further study of the materials used, the locations in which they were built, and their construction methods suggest that many of these homes were built to last. The three case studies used in this thesis represent a large number of earth homes still standing today. The findings of this study enhance the history of the region and open up new avenues for further research on earth homes as well as the possibilities and the importance of their preservation.
840

The response of biological communities to spatial and temporal changes in a regenerating coastal dune forest along the north-east coast of South Africa

Ott, Theresia 30 January 2013 (has links)
Ecological restoration that aims to reinstate indigenous processes may be constrained by regional and local conditions, especially those that drive dispersal and colonisation. Local conditions can be managed, while regional conditions cannot. The management of costly rehabilitation programmes is considered best practice when scientifically informed. My thesis documents the responses of biological communities to a range of local conditions developing in coastal dune habitats in response to ecological restoration. Here, landscape-level (spatial structure of patches of tree canopies) local conditions were distinguished from site-level (topography, soil nutrient content, woody plant community richness, microclimatic variables) local conditions. The spatial structure of tree canopies varied over time and differed between the mining lease site and the relatively undisturbed benchmark site prior to (1937- 1970), and after (1990-2006) mining. For example, approximately 20% of the mining lease site and 40% of the benchmark site was covered by tree canopies prior to mining. However, after mining and rehabilitation, the structure of tree canopies began to converge towards that of the benchmark. The topographic profile of coastal dunes was less heterogeneous after mining and rehabilitation than before. Aspect, elevation and gradient of dune slopes were also different and had shifted in space. Variability in the structure of tree canopies could not explain variability in species richness, forest-associated species richness and proportion of benchmark species for the millipede, dung beetle and bird communities ashad been expected. However, species composition did change (though idiosyncratically) with age-related changes in soil nutrient availability and tree species diversity. Temperature, relative humidity and light intensity varied with dune topography, but soil nutrient content (C: N ratio and pH) was better accounted for by the age of the regenerating forest than by dune topography. Similarly, analysis of covariance suggested that tree canopy density, woody plant richness and millipede species richness only responded to the aspect, elevation and gradient of restored coastal dunes when age was taken into account as a covariate. However, the response of keeled millipedes to dune topography, regardless of regeneration age, suggested that the microclimatic variability brought about by topographic heterogeneity may provide these specialists with suitable microhabitats. Throughout my thesis, the age of regenerating patches of indigenous canopies was often more important as an explanatory variable than habitat conditions per se. Age itself is not a determinant of biological communities, but merely the axis along which habitat conditions change with succession, and later, patch dynamics. Therefore, as elsewhere, my thesis has highlighted age as a useful proxy for the response of biological communities to local conditions. It seems that managing local variables such as those considered in my assessment is not an avenue through which to enhance restoration. After kick-starting initial conditions, best practice rehabilitation management should therefore focus on minimizing external disturbances rather than interfering with natural processes. / Thesis (PhD)--University of Pretoria, 2013. / Zoology and Entomology / unrestricted

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