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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.
161

Need for Speed(y) Conversion to a Low-Emission Vehicle Fleet : The Incidence of the Swedish Feebate Tax in the Presence of the Impending EU CO2 Emission Standards

Dagher, Michaela January 2022 (has links)
In 2014, the European Union and its members agreed to reduce carbon dioxide emissions by 40 percent before 2030. The Bonus-Malus, a feebate tax scheme, was introduced in Sweden in 2018 in the hopes that it would result in lower carbon dioxide emission from Sweden’s transport sector. Sweden’s feebate is a regulatory measure to achieve an efficient cost-constrained environmental policy, thus reduce the negative externalities from the transport sector. Using a Difference-in-Differences approach, this paper aims to determine who benefits from tax incentives created from the implementation of the feebate tax in Sweden using panel data of list prices and vehicle characteristics between 2015 and 2020. The results indicates that there is no long-run price effect when introducing the Swedish feebate tax. Moreover, the results from the additional analysis indicate that the manufacturers’ list price adjustments to the Swedish feebate tax are overshadowed by the introduction of the EU carbon dioxide emission standards because of the close time proximity between the two policy measures. The lack of list price adjustments enables consumers in Sweden to exploit an arbitrage opportunity in that they can gain the entirety of the subsidy but also suffer the entire cost of the malus fees.
162

Analyis Of Airborne Microwave Polarimetric Radiometer Measurements In The Presence Of Dynamic Platform Attitude Errors

Kabore, Jean Yves 01 January 2006 (has links)
There are numerous applications for airborne imaging systems in remote sensing, and this thesis deals with a new microwave polarimetric radiometer technique for inferring ocean surface wind direction [3, 5, 7]. This technique is based upon the anisotropy of the polarized ocean blackbody emissions at microwave frequencies relative to the azimuth angle between the microwave radiometer antenna "look" direction and the direction of the wind. Because of the weak wind direction signature, it is important that all systematic brightness temperature (Tb) errors be eliminated, especially those that vary with the radiometer antenna scan position (look direction). This can be accomplished either in hardware implementation or through data processing corrections. Unfortunately, the misalignment of the axis of rotation for a conical-scanning imager can introduce such azimuthally dependent errors of significant magnitude. As the title suggests, the analysis of the resulting Tb errors caused by static and dynamic time-varying aircraft attitude errors is the main thrust of this thesis. In this thesis, we present analytical models developed to account for platform attitude changes on measured ocean microwave brightness temperature collected by a conically scanning radiometer. Data processing procedures for removing unwanted variations in ocean brightness temperatures are outlined. The analytical models are validated by making comparisons between modelled and measured Tb's obtained by the Conically Scanning Two-Look Airborne Radiometer (C-STAR). Results demonstrated that the analytical Tb model can accurately predict the measured polarized Tb's under actual flight conditions.
163

When You Run Out of IDEA: Meaningful Transition for Emerging Adults with Low Incidence Disabilities

Edwards, Tisha January 2023 (has links)
In the U.S. students in public schools with disabilities are protected via special education services under the Individuals with Disabilities Education Act (Individuals with Disabilities Education Act, 2004). As part of these regulations, schools are required to provide students aged 16 years and older with transition services to prepare them for life as adults. Research shows that there are links between participation, social engagement, work and well-being (Cacioppo, et al., 2014; Gilson, et al., 2022; Holt-Lunstad, 2018; Macdonald, et al., 2018) as well as a link between social isolation and increased mortality and morbidity (Snyder-Mackler, et al., 2020; Yang, et al., 2016), and yet parents of individuals with moderate to severe/profound, complex, or low-incidence disabilities do not always have transition experiences they feel set their child up for success in real-life situations (Lee & Kim, 2021; Snell-Rood, et al., 2020). This research study used a mixed methods structure to obtain research regarding parent perspectives on specific areas schools need to address to create strong and meaningful transition plans for their students who have more involved disabilities and may require more support. A literature review, a web-based parent survey, 6 one-to-one interviews, and a focus group of 4 interview participants were conducted to drive development of an online, self-paced instructional course comprised of five modules designed to be implemented with school administrators and IEP team members (including, but not limited to teachers, related service providers, psychologists, support staff, parents and students) highlighting immediately implementable strategies to strengthen the IEP transition process in which they participate. Results compiled from all sources support five main areas or themes for creating meaningful transition: collaboration/team/relationships, community based/real-life instruction, presumed competence/mindset, knowledge, and skills (of the parent and school team members), and individualizing the IEP. Additional research supports the use of specific team members (e.g. vocational rehab transition specialist (Plotner & Dyamond, 2017)) and a case is made for ensuring transition teams for students with moderate to severe/profound, complex or low-incidence disabilities include occupational therapists who are trained in the value of using meaningful participation to improve quality of life for their clients (AOTA, 2020). / Temple University. College of Public Health / Health and Rehabilitation Sciences
164

Colorectal Cancer: Incidence and Mortality among The Medicare Population (1990-1997)

Islam, K.M. Monirul January 2005 (has links)
No description available.
165

Do any of a set of Lower Extremity Functional Assessment tests predict in the incidence of injury among a Cohort of collegiate freshmen football players? A Pilot Study

Schweim, Jarrett Joshua 01 September 2009 (has links)
No description available.
166

Calculating confidence intervals for the cumulative incidence function while accounting for competing risks: comparing the Kalbfleisch-Prentice method and the Counting Process method

Iljon, Tzvia 10 1900 (has links)
<p>Subjects enrolled in a clinical trial may experience a competing risk event which alters the risk of the primary event of interest. This differs from when subject information is censored, which is non-informative. In order to calculate the cumulative incidence function (CIF) for the event of interest, competing risks and censoring must be treated appropriately; otherwise estimates will be biased. There are two commonly used methods of calculating a confidence interval (CI) for the CIF for the event of interest which account for censoring and competing risk: the Kalbfleisch-Prentice (KP) method and the Counting Process (CP) method. The goal of this paper is to understand the variances associated with the two methods to improve our understanding of the CI. This will allow for appropriate estimation of the CIF CI for a single-arm cohort study that is currently being conducted. Previous work has failed to address this question because researchers typically focus on comparing two treatment arms using statistical tests that compare cause-specific hazard functions and do not require a CI for the CIF. The two methods were compared by calculating CIs for the CIF using data from a previous related study, using bootstrapping, and a simulation study with varying event rates and competing risk rates. The KP method usually estimated a larger CIF and variance than the CP method. When event rates were low (5%), the CP method is recommended as it yields more consistent results than the KP method. The CP method is recommended for the proposed study since event rates are expected to be moderate (5-10%).</p> / Master of Science (MS)
167

Analysis of the Efficiency, Equity, and Adequacy of a Forest Site Value Tax

Costello, Scott Thomas 08 December 1997 (has links)
Forest property taxes play an integral role when private landowners make land use and management decisions. Economists often suggest that taxes should be neutral, thus causing no change in land use or management decisions compared to the pre-tax condition. The traditional ad valorem property tax has long been criticized, particularly as it pertains to forestry, because of its distortionary properties and inherent bias against long-rotation investments. Alternatives to the traditional forest property tax include current use assessment, productivity, yield, and site value taxes. The site value tax is a property tax on the market value of bare land only, exempting improvements. In theory, the site value tax has been championed as the only neutral property tax alternative; however, in actual application, a forest site value tax may prove to be non-neutral and, by certain measures, inequitable. The degree of the tax's neutrality can be linked to the method of tax administration and the ability of assessors to accurately determine bare land market values for a wide range of site qualities. This paper reviews literature on forest property tax alternatives and theoretically examines the efficiency of an applied forest site value tax. The adequacy and equity of a proposed forest site value tax are examined in detail and compared for two study areas: Western Oregon and Alabama; in light of local governmental budget constraints. Although the site value tax may represent a less-distortional vehicle for collecting local taxes, it is unlikely to be politically or administratively feasible. Also, given the existence of other distortions in the economy, a site value tax may not prove to be the most efficient tax in application, despite its neutral properties. / Master of Science
168

Les variations géographiques de la mortalité par cancer au Québec en relation avec l’incidence et la létalité, 2000-2004

Bergeron, Edith 12 1900 (has links)
Le cancer occupe le premier rang parmi les causes de décès au Québec. Les taux de mortalité diffèrent cependant à travers les régions du Québec. En considérant les territoires des Centres de santé et de services sociaux (CSSS), ce mémoire propose dans un premier temps d’étudier la distribution des taux de mortalité pour les principaux sièges de cancer, d’identifier les régions où une différence significative du taux avec le reste du Québec est perceptible et d’approfondir des éléments impliqués dans la mortalité, soit l’incidence et la létalité. D’autre part, dans le but d’expliquer les variations des taux de mortalité, des variables socio-économiques liées aux territoires retenus serviront de variables explicatives au modèle de régression utilisé. Les résultats ont permis de constater que c’est pour le cancer du poumon que les écarts significatifs sont les plus nombreux. Quant au cancer colorectal, un seul territoire présentait un écart significatif. Pour ce qui est du cancer de la prostate et du sein, aucun écart n’est perceptible dans les taux de mortalité. Concernant la partie explicative de la mortalité, dans le cas du cancer du poumon, les taux d’incidence sont fortement corrélés aux taux de mortalité. On ne peut cependant faire le même constat pour les cancers colorectal, du sein et de la prostate. De plus, les variables socio-économiques considérées pour les territoires de CSSS ne permettaient pas d’arriver à un modèle explicatif convaincant. Ces résultats montrent la nécessité d’avoir des données longitudinales permettant de suivre les individus dès le moment où le diagnostic de cancer est établi afin d’être en mesure de mieux mesurer les liens entre l’incidence, la survie, le niveau socio-économique et la mortalité. / Cancer is the leading cause of death in Québec. However, mortality rates vary significantly throughout Quebec’s regions. Using the CSSS (Centre de santé et de services sociaux) territories as a base of comparison, the present thesis will study the regional distribution of mortality rates amongst the territories with the highest cancer rates, identify those territories that have a significant variation from the overall cancer rate of the province, and investigate the relation between incidence rates and lethality. Moreover, to help explain variations in mortality rates, a regression analysis was undertaken using socioeconomic variables of each territory. The analysis demonstrated that territorial disparity was the greatest for lung cancer. As for colorectal cancer, only one territory showed a rate different with that of Quebec as a whole. For prostate and breast cancer no variations were identified. Lung cancer mortality rates were found to be strongly correlated with incidence rates, but that wasn’t the case for the other cancers (colorectal, breast and prostate). Further, the analysis of the socio-economic variables in the regression model did no present any convincing results. The need for longitudinal data to study mortality rates by cancer and its associated factors is deemed to be a major issue.
169

Étude de la pulvérisation et de l'émission de la matière sous bombardement Cs+ / Study of sputtering and emission of matter under Cs+ bombardment

Verdeil, Christophe 30 October 2008 (has links)
La technique Storing Matter a pour objectif d’améliorer la sensibilité et la quantification des analyses par SIMS. Elle consiste à découpler la phase de pulvérisation de l’échantillon de la phase d’analyse. Pour cela, la matière pulvérisée par bombardement ionique est déposée en sous-monocouche sur un collecteur optimisé. Le dépôt est ensuite analysé par SIMS. La probabilité d’ionisation de la matière ne dépend plus de son environnement initial (“effet de matrice”), mais de la surface du collecteur. Le choix du collecteur permet un gain de sensibilité et la quantification des concentrations de l’échantillon initial. L’efficacité de la technique dépend du choix du collecteur et d’un facteur de collection ? caractérisant la phase de pulvérisation-dépôt. Dans ce travail, nous avons étudié la pulvérisation et l’émission de la matière sous bombardement ionique pour optimiser ce facteur ?. Nous avons mis au point un dispositif expérimental ainsi qu’un protocole d’analyse par SIMS qui nous a permis d’étudier la distribution angulaire sous un bombardement d’ions Cs+ avec une incidence oblique pour différents paramètres d’impact. L’étude menée sur quatre cibles (Si, Ge, InP et GaAs) a montré que la distribution angulaire est de forme cosn (?-?Max) pour une énergie et un angle d’impact de respectivement 2 à 10 keV et 30° à 60°. L’exposant n est ~2 tandis que la direction d’émission préférentielle ?Max varie de la normale à la surface (0°) jusqu’à un angle d’émission de 35° dans la direction spéculaire au faisceau en fonction de l’énergie d’impact et de l’angle d’incidence. Ces résultats appliqués à Storing Matter ont permis de déterminer la configuration optimum pour une collection maîtrisée en fonction du bombardement / The Storing Matter technique aims at optimising the sensitivity and quantitativeness of SIMS analysis. It consists in decoupling the sputtering of the specimen from the subsequent analysis step. The specimen is sputtered by means of an ion beam. The emitted particles are deposited at a sub-monolayer level on an optimised collector. The deposit is subsequently analysed in a SIMS instrument. The ionisation probability in SIMS does not depend anymore on the initial sample composition (“Matrix effect”), but on the collector surface chemistry. The collector is chosen in order to increase the sensitivity and to quantify the specimen. The efficiency of this new technique depends on the collector choice and on the collection factor ? characterising the sputter-deposition step. In this work, the sputtering and emission processes under ionic bombardment have been studied in order to optimise this factor ?. We developed an experimental set-up and an analysis protocol based on SIMS that allows us to study the angular distribution under Cs+ bombardment with an oblique incidence for different impact parameters. Four targets (Si, Ge, InP and GaAs) were studied. The results show that the angular distribution is shaped as a cosine function cosn (?-?Max) for impact energies between 2 and 10 keV and for incidence angles from 30 to 60°. Under these conditions, the exponent n is ~2 and the preferential direction of emission ?Max varies from the normal to the surface to 35° in the specular direction in function of the impact energy and the incidence angle. The results allowed to find the best settings for the Storing Matter technique to control the sputtered matter collection in function of the bombardment parameters
170

Incidence des leucémies de l'enfant en fonction de la proximité et des caractéristiques générales de diverses sources d'expositions environnementales / Incidence of childhood leukemia in relation to proximity and general characteristics of different environmental exposure sources

Sermage-Faure, Claire 21 June 2012 (has links)
Le rôle de l'environnement dans l'étiologie des leucémies aigües de l’enfant (LA) fait aujourd'hui l'objet de recherches intenses. Dans ce contexte, le présent travail a pour objectif d’étudier la relation entre l’incidence de LA et la proximité des centrales nucléaires de production d’électricité (CNPE) et des lignes à haute tension (LHT). Avant cette analyse fine, un premier travail a consisté à étudier les variations départementales de l'incidence de LA.Les cas inclus dans ces études sont toutes les LA du Registre National des Hémopathies malignes de l’Enfant sur la période étudiée : 1990-2004 pour l’étude de l’incidence départementale et 2002-2007 pour les études de l’association avec les facteurs d’exposition environnementale. Dans l’approche cas-témoins principalement utilisée pour ces dernières, les 30 000 sujets témoins constitue un échantillon représentatif de la population pédiatrique française sur la période d’’intérêt. D’autre part, la géolocalisation des adresses des sujets et des sources d'exposition permet de définir des critères de proximité en relation avec la probabilité et/ou l'intensité d'exposition aux facteurs d'intérêt. • L’étude des LA par département n’a pas mis en évidence de tendance ni de structure spatiale dans l’incidence à ce niveau géographique : que ce soit globalement, par classe d’âge, par sexe ou par sous-type de leucémie. • Sur la période 2002-2007 contrairement aux périodes précédentes, un quasi-doublement de l’incidence des LA à moins de 5 km des CNPE a été mis en évidence, avec une approche cas-témoin comme avec l’étude d’incidence. Ce résultat n’était pas spécifique d’une CNPE ou d’un type de CNPE et non lié à la cartographie des émissions aériennes de radioactivité par les CNPE. • L’association trouvée entre l’incidence de LA et la proximité aux LHT de plus de 225 kV (<50 m) semble restreinte aux enfants de moins de 5 ans ou n’habitant en milieu urbain ; aucune association n’a été trouvée avec la proximité aux LHT de moins de 150 kV. / The role of the environment in the etiology of childhood acute leukemia (AL) is currently investigated. In this context, the aim of the present work is to study the association between the incidence of AL and the proximity no nuclear power plants (NPP) and to high voltage overhead power lines (HV OLs). At first, the geographical variations of AL have been studied at the Département level.The cases included in the studies are all cases of AL of the French National Registry of Childhood Haemopatopoietic Malignancies on the studied periods: 1990-2004 for the study of incidence on Départements and 2002-2007 for the studies of association between incidence of AL and environmental exposure factors. Concerning those latter studies, a case-control approach has been used. The control sample, representative of the French pediatric population, contains 30,000 subjects and has been drawn by the INSEE. The precise localization of addresses of subjects and of exposure sources in relation with the type of sources is essential to build indicators of exposure reflecting the probability and intensity of exposure. • The study of AL by Département has highlighted neither trend nor spatial structure in the incidence at this geographical level globally as well as by age, gender and subtype of leukemia.• On 2002-2007, on the contrary of on previous periods, the incidence of AL at less than 5 km from a NPP was nearly twice higher than expected, with the case-control study as well as with the incidence approach. This result was not specific to any age group, NPP, a type of NPP and was not associated with the geographic zoning of gaseous discharges of NPPs. • The study of the proximity to HV OLs highlighted an association between the incidence of AL and the close proximity (< 50 m) of lines of more than 225 kV, association which was restricted to children of less than 5 y.o. or living in non-urban areas; but not with the proximity to lines of less than 150 kV.

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