Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 483 for “"OLS"”.
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New to ols For Monitoring Gamma Camera Uniformity
Detector uniformity is a fundamental performance characteristic of all modern gamma camera systems, and ensuring a stable, uniform detector response is critical for maintaining clinical images that are free of artifact. For these reasons, the assessment of detector uniformity is one of the most …
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Automated to ols for Contour Review in Radiotherapy
… purpose of this study was to develop automated tools that can accurately identify sub-optimal contours (inadequate target coverage, sub-optimal delineation of organs at risk to reduce toxicity), agnostic of their manual or automated generation. To accomplish this, we first examined the …
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Development of Computational to ols to Target Microrna
<p>MicroRNAs (a.k.a, miRNAs) play an important role in disease development. However, few of their structures have been determined and structure-based computational methods remain challenging in accurately predicting their interactions with small molecules. To address this issue, my thesis is to …
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VIrginia Urban Dynamics Study Using DMSP/OLS Nighttime Imagery
… Program/Operational Linescan System (DMSP/OLS) to delineate urban boundaries and tracked three key urban changes: land cover change, population growth and GDP growth within Virginia. NTL data from different years were inter-calibrated to be comparable by using linear regression model and …
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The Safe and Effective Clinical Deployment of Artificial Intelligence to ols
… they need. Artificial Intelligence (AI) based tools are being developed to simplify the treatment planning and quality assurance processes to increase the number of patients who can be treated, as well as improving the quality of their treatment plans. While AI techniques have shown great …
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Renal Cryoablation: Investigation of Periprocedural Visualization to ols and Treatment Response Quantification
<p>Cryoablation for small renal tumors has demonstrated sufficient clinical efficacy over the past decade as a non-surgical nephron-sparing approach for treating renal masses for patients who are not surgical candidates. Minimally invasive percutaneous cryoablations have been performed with image …
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Did Nca, Npa, Ols, and Usaid Prolong the Second Sudanese Civil War
<p>Sudan has experienced conflict and war since gaining independence from Great Britain in 1956. This thesis will focus on the second civil war that began in 1983 and ended with the signing of the Comprehensive Peace Agreement in 2005, and the roles certain non-governmental organizations, …
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Reporting Methods and Analyses in Higher Education Research: Hierarchical Linear and OLS Regression Models
… of studies using hierarchical linear and OLS regression models. The study consisted of three parts: (a) a citation analysis of sources associated with methods of hierarchical linear models, (b) a content analysis of reporting practices associated with studies that used hierarchical linear …
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Aladdin's Magic Lamp: Developing Methods for Calibration and Geolocation Accuracy Assessment of the DMSP OLS
… Program (DMSP) Operational Linescan System (OLS) has a unique capability to observe nocturnal light emissions from sources including cities, wild fires, and gas flares. Data from the DMSP OLS is used in a wide range of studies including mapping urban areas, estimating informal economies, and …
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The Development of Artificial Intelligence-Based to ols For Expert Peer Review of Radiotherapy Treatment Plans
… automated treatment plan quality assurance tools that can provide expert peer review, without the need for actual access to teams of specialized radiation oncologists. To accomplish this, we trained deep learning models to predict patient-specific optimum-achievable 3D dose distributions for …
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Plant wax alkanes and alkan-1-ols in ocean sediments as indicators of continental climate change – validation of a molecular proxy
Die vorliegende Arbeit validiert die Aussagekraft von langkettigen n-Alkanen und n-Alkanolen als Indikatoren für den Eintrag terrestrischen Pflanzenmaterials in geologische Archive. Schwerpunkt der Studie war die Analyse der Verteilungsmuster sowie der molekularen stabilen Kohlenstoff- und …
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Study of the kinetics of the [1,5]-sigmatropic phenyl rearrangement in 3,4-bis(para-substituted phenyl)-1,2,5-triphenyl-2,4-cyclopentadien-1-ols
… cyclopentadien-1-ols to 3,4-bis-(para-substituted)-2, 2,5-triphenyl-3-cyclopenten-1-ones, where the substituent were, t-butyl, methyl, hydrogen, chloro and bromo, has been performed at 180, 190, 200 and 210 ± 0.2° in tetraethylene glycol. The rearrangement was …
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Design, synthesis, and evaluation of bioactive molecules; Chiral polyvinylpyrrolidones supported Cu/Au nanoclusters catalyzed cyclization of 5-substituted nona-1,8-dien-5-ols
… reaction of 5-substituted nona-1,8-dien-5-ols. A five-member cyclized lactone possessing a stereogenic tetrasubstituted carbon center was formed in a one-step Cu/Au nanoclusters-hydrogen peroxide oxidation reaction. This developed a novel and simple method to synthesize tetrasubstituted …
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Investigation of the steric and/or electronic effects associated with the (1,5)-sigmatropic rearrangement of 1-substituted-2,3,4,5-tetraphenyl- 2,4-cyclopentadien-1-ols
… stituted-2,3,4,5-tetraphenyl-2,4-cyclopentadien-l-ols were efficiently synthesized by the addition of the appropriate organometallic reagent to tetracyclone. It was determined that the steric and electronic nature of the migrating groups played a predictable role in the [l,5]-sigmatropic …
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Structural equation modeling compared with ordinary least squares in simulations and life insurers’ data
… focusing especially the comparison of SEM and OLS regression. A simple tutorial of how to apply SEM is also included with the introduction and comparison. SEM can be roughly seen as OLS regression added with features such as simultaneous estimation, latent factors and autocorrelation. …
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Becoming an Orientation Leader: A Catalyst for Self-Authorship Development
Orientation Leaders (OLs) are current college students charged with helping to facilitate the college transition process for new students. This role has the potential to affect OLs, particularly as it relates to how they self-author. The purpose of this study was to explore the ways that serving as …
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Deming Regression: An Alternative to Ordinary Least Squares in Handling Error in Variables Models with Noisy Datasets
… The alternative to Ordinary Least Square (OLS) could be Reduced Major Axis (RMA) and Grouping method when the error variances of both the independent and dependent variables are not exactly known, whereas, in the situation where the error variances are exactly known, the Deming/Orthogonal …
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Pathological mechanisms of the ischemic white matter injury in animal model of lacunar infarction
… neurons. Myelin is produced by oligodendrocytes (OLs) in central nervous system. Demyelination and oligodendrocyte loss are prominent features of the white matter stroke. To elucidate the pathomechanism of ischemic white matter lesion, I used focal white matter infarction model, which resembled …
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Oligodendrocytes of the adult median eminence
Oligodendrocytes (OLs) are the myelin forming cells of the CNS. Once thought to be generated exclusively during development, recent advances have shown that new OLs are generated in the adult brain from oligodendrocyte progenitor cells (OPCs) in response to physiologically relevant stimuli such as …
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