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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.
181

Is School Size Important? A Study of the Relationship Between School Size and Advanced Achievement in Public Secondary Schools in Virginia

Perrigan, Keith Samuel 28 December 2010 (has links)
The primary focus of the current study was to determine if there is a relationship between size of high school and advanced academic achievement as measured by the Virginia Index of Performance while statistically controlling for multiple combinations of the following variables; socioeconomic status, urbanicity of school, per-pupil expenditure, and student-teacher ratio. The combinations of variables used in the current study were determined by knowledge gained in the review of the literature. Level of award on the Virginia Index of Performance, school enrollment, percentage of students receiving free or reduced lunch prices, per-pupil expenditures, student-teacher ratios, and school locale were collected for all high schools in Virginia with 9th-12th grade configurations for school years 2006-07 through 2008-09. A sequential multiple regression analysis was conducted using level of Virginia Index of Performance award earned as the dependent variable and school size as the primary predictor variable while statistically controlling for per-pupil expenditure, student-teacher ratio, socioeconomic status, and urbanicity in different combinations. The analyses performed on the collected data revealed that school size, when other variables were accounted for, was not a significant predictor of performance on the Virginia Index of Performance incentive program. When the analyses were performed for Research Question 2, however, socioeconomic status was found to be a significant predictor of performance on the Virginia Index of Performance incentive program. Multiple limitations should be noted when interpreting the results of the analyses. The main limitations to the current study were a restricted population of schools due to confines placed on grade configurations of schools included in the study and the initial criteria of making Adequate Yearly Progress for two consecutive years in order to be eligible to receive an award in the Virginia Index of Performance program. The combination of these restrictions resulted in a large number of schools being excluded from the current study. Due to the range restrictions placed on the studied population, the relationship between size of school and advanced student achievement could be stronger than reported. Future research should include a less restricted population of schools and other measures of advanced student achievement. / Ed. D.
182

Integrated Thermal and Daylight Performance Comparison of Single and Double Glass Skin Facade for Hot Climate Conditions

Altahlawi, Naif Tarik 28 June 2019 (has links)
Visual integration of the building interior and exterior is one of the charms of today's architecture. The Double-Skin facade system is a technology that can reduce the drawbacks of using glass in a building's elevation. In fact, the double-skin façade (DSF) offers transparency while reducing energy consumption when compared to single-skin systems in cold and moderate weather conditions. However, there is no clear evidence of how the system will perform in hot climate conditions. In this research, a testing procedure was established to experimentally evaluate the performance of the double-skin façade system, data was collected to create multiple regression models, and then evaluate the double-skin façade's performance and compare it to a single-skin system in hot arid climate conditions. / Doctor of Philosophy / Improving the quality of indoor environments is a main goal in today’s architecture. Towards this goal, the use of glass and curtain walls is common in office buildings. The building façade is a key factor for the amount of energy consumed to reach comfort levels in the building. That is, because facades influence lighting, glare, heat gain, noise safety and energy usage. Therefore, the use of glass improves transparency which can interfere with comfort levels inside the building due to solar heat gain. The Double Skin façade system is widely adopted in Europe and has been shown to reduce energy used for heating in cold weather. In winter, heat losses can be reduced as the system’s intermediate cavity acts as a thermal buffer. However, there is no clear understanding of how the system will perform in hot arid climate conditions where cooling is the dominant operating mode. A Double Skin Façade can provide shading during the overheating period, while having the desired glass elevations sought by designers. This is due to ventilation and solar control devices located inside the system’s cavity. Being placed between the interior and the exterior glass panels, solar control devices are protected from the weather, which in return decreases its size. Furthermore, the additional glass panel allows windows in the system’s inner layer to be opened for natural ventilation. Unfortunately, the performance of the Double Skin Façade system for hot arid climate is not well documented. Therefore, the primary goal of this research is to compare the thermal and light performance of the Double Skin Façade system to a single façade system for hot weather conditions.
183

Fastighetsbolagens kapplöpning till börsen : En kvantitativ studie över makroekonomiska faktorers påverkan på antalet börsintroduktioner / The IPO-race of Real Estate Firms : The dynamic impact of macroeconomical factors

Ekman, Emelie, Bergkvist, Frida January 2015 (has links)
Syfte: Studien syftar till att visa hur och varför volymen börsnoteringar av fastighetsbolag varierat över tid och hur denna volym har påverkats av det ekonomiska klimatet. Metod: Studien baseras på en kvantitativ metod. Multipel regressionsanalys tillämpas där makroekonomiska faktorers förklaringsvärde för volymen börsintroduktioner av fastighetsbolag undersöks. Teoretisk referensram: Det teoretiska ramverk som används i denna studie har sin primära utgångspunkt i tidigare forskning gjorda på börsnoteringar. Vidare har The Fisher Di Pasquale Wheaton model använts för att få en djupare förståelse för fastighetsbranschens mekanismer. Kopplingen till aktiemarknaden har sitt ursprung i Den effektiva marknadshypotesen tillsammans med The capital demand hypothesis. Resultat: Denna studie finner ett negativt samband mellan antalet introduktioner av fastighetsbolag samt det aktuella ränte- och konjunkturläget. Aktieprisutvecklingen bland fastighetsbolag och volatilitet på fastighetsaktiemarknaden har båda ett positivt samband med antalet introduktioner av fastighetsbolag. Denna studie finner inget samband mellan antalet introduktioner av fastighetsbolag och inflationsnivå. / Objective: This thesis aims to gain a deeper understanding of IPO activity by real estate firms, and why its volume varies over time. The objective is also to obtain the impacts of macroeconomic factors on the volumes of initial public offerings. Method: This study uses a quantitative method were macroeconomic factors will be used as predictors in a multiple regression analysis. Further, IPO volumes of real estate firms will be considered as the constant. Theorethical references: The basic theories that are used in this thesis are Efficient Market Hypothesis, the FDW-model, and The Capital Demand Hypothesis. Previous thesis that covers IPOs are considered as the fundmental basis of this study. Results: The results shows a negative correlation between the IPO volumes of real estate firms, and the interest rate, as well as the economic cycle. Hence, this study finds a positive correlation between stock prices and the volatility at the stock market. The results don’t find any significant correlation between IPO volumes and the inflation rate.
184

Structural equation modelling

Mohanlal, Pramod 06 1900 (has links)
Over the past two decades there has been an upsurge in interest in structural equation modelling (SEM). Applications abound in the social sciences and econometrics, but the use of this multivariate technique is not so common in public health research. This dissertation discusses the methodology, the criticisms and practical problems of SEM. We examine actual applications of SEM in public health research. Comparisons are made between multiple regression and SEM and between factor analysis and SEM. A complex model investigating the utilization of antenatal care services (ANC) by migrant women in Belgium is analysed using SEM. The dissertation concludes with a discussion of the results found and on the use of SEM in public health research. Structural equation modelling is recommended as a tool for public health researchers with a warning against using the technique too casually. / Mathematical Sciences / M. Sc. (Statistics)
185

產業特色對企業績效影響之分析- 台灣大型企業之實證研究

王秉鈞, Wang, Bing-Jun Unknown Date (has links)
企業之生存、成長及績效,環境之影響至巨,若企業本身處於一個發展潛力甚高的產 業,則環境之優渥保證了企業的未來遠景,當然管理能力亦為一重要決定因素。 本研究的目的即是在探討企業環境對於企業本身之生存、成長及績效之影響關係。以 美國Edward H.Mason與J.S.Bain等人所發展的產業組織學(Industrial Organizatio n )為架構,以多元迴歸分析(Multiple Regression Analgsis)為方法,研究我國 目前大型企業之環境與其績效間之關係,布冀從其中獲致企業良好投資環境之指引。 樣本包含了自民國67年至70年連續四年進入中華徵信所出版「全國最大民營企業 」排行之三百二十餘家民營製造業者,選出與績效與產業特色有關變數指標共十四個 ,如利潤率、成刁率、市場集中度、市場佔有率等。資源來源為:(一)中華徵信所 「全國最大民營企業」68─71年版。(二)經濟部統計處「中華民國工商業調查 報告」11─14輯。(三)財政部統計處「中華民國進出貿易統計月報」民國72 年三月版。
186

用戶別售電量與電費收入之研究:台電公司實證案例 / A Study on Customer-by-Category Energy Sales and Power Sales Revenue Model: The Case of Taiwan Power Company

蔡佩容 Unknown Date (has links)
本文旨在檢定台電公司現行季節電價月份劃分之合理性,並探討影響用戶別售電量與電費收入之經濟因素。為達成此目的,本文先就負載觀點與成本觀點進行群集分析,以檢定季節電價是否具統計意義之正當性;其次建立經濟計量模型,分別採用戶別之總售電量與總電費收入做為被解釋變數,運用民國88年1月至民國91年12月之月資料進行實證分析。本文建立之經濟模型有二,分別為時間序列以及複迴歸方程式模型。經檢定分析後,本文就各實證參數之經濟意涵加以闡示,最後並提出結論以及未來研究之方向。 本文透過月資料之群集分析,顯示夏月相對於非夏月之群集差異與台電公司現行季節電價夏月與非夏月之月份相一致,證實台電公司季節電價月份劃分之合理性。其次,透過ARIMA時間序列建立之短期電力需求預測模型,經實證結果顯示:電燈與電力用戶別之售電量均逐年增加,預測民國93年1月至民國99年12月,電燈用戶之年售電量平均成長率為3.33%、電力用戶為3.23%。再者,利用複迴歸模型進行實證分析之結果發現:(一)影響售電量之主要變數為溫度。惟因電燈用戶每隔兩月抄表一次,與電力用戶按月抄表之作業方式不同,故電燈用戶每月售電量係受前期(月)溫度影響,而電力用戶則受當期(月)溫度影響。(二)各用戶別之總電費收入與售電量有明顯相關,且經估算出各月售電量之電費收入彈性顯示:電燈用戶約為0.5,電力用戶約為1。由於總電費收入為總售電量與平均電價之乘積,故電燈用戶之電費收入增加1% 時,其售電量僅增加0.5%,顯示總電費的收入增加係有部分來自於平均電價的提高;換言之,就電燈用戶別而言,其電費收入增減變化之百分比除了會受到售電量增減幅度之影響外,亦反映了平均電價變化的情形。同理,對電力用戶來說,其各月售電量之電費收入彈性接近於1,表示電費收入變化1% 時,售電量亦增加1%,即電費收入之增減變化比例主要受到售電量之同向等幅變化所影響。 至於各用戶別之電費收入方面,電燈與電力兩類用戶自民國88年初至91年底四年期間均有逐年增加之趨勢,惟電力用戶之年增加幅度有隨時間遞減之現象,且歷年大抵以7-10月份較高,2月份最低。此外,影響用戶別電費收入之解釋變數中,各類用戶之售電量最為顯著,其參數值係隱示每增加一度售電量對其電費收入之影響。其中,電燈用戶之估計參數值為2.69,而電力用戶則為1.35。再者,由其電費收入之售電量彈性係數可以發現:電燈用戶約為1.2,電力用戶約為0.7,顯示電燈用戶總售電量增加1%時,總電費收入增加的幅度大於1%,而電力用戶則相反。推估電力用戶此一彈性係數較電燈用戶低之原因在於:電力用戶與電燈用戶之電價結構不同,前者係採需量電費與能量電費之兩部電價制,而後者僅包含流動電費之一部電價。最後,實證結果亦顯示電力系統之尖峰負載與負載率會影響電費收入,惟其影響幅度不大。 / A Study on Customer-by-Category Energy Sales and Power Sales Revenue Model: The Case of Taiwan Power Company Abstract The main purposes of this study are to examine the rationality of the seasonal pricing scheme defined by summer and non-summer months and to identify economic factors influencing customer-by-category energy sales and power sales revenue, utilizing the data of Taiwan Power Company (Taipower) as an empirical case. In order to achieve this objective, the cluster analysis from the perspective of load pattern and cost pattern are examined respectively to see if the seasonal pricing scheme has statistical meaning in its pattern differences in terms of summer vs. non-summer season. Second, two economic models including time-series analysis and multiple regression equations are formulated for the empirical case study. The subtotal energy sales and the subtotal power sales revenue by different type of customer categories, i.e. lighting and industrial customers, are set to be the explained variables. Data from January 1999 to December 2002 are collected for modeling simulation tests. The economic meanings and policy implications of the modeling results are elaborated on. And conclusions with directions for further research are presented. Through the cluster analysis utilizing monthly data within the time frame mentioned above, empirical research results on the grouping cluster of summer vs. non-summer months shows a consistent trend with those defined by Taipower’s present seasonal pricing scheme. Second, the empirical results of ARIMA time-series model show that the forecasted energy sales of both lighting and industrial customers will be gradually increasing through January 2004 to December 2010, and the average annual growth rate of energy sales for the lighting customer is 3.33%, and for the industrial customer is 3.23%. On the other hand, the empirical research results through the multiple regression equations show that the main factor affecting the energy sales is temperature. Due to the different time schedules for reading electricity meters between the lighting customer and the industrial customer, i.e. the time interval for reading the meter of lighting customers is every two months and for industrial customers is every month, the monthly energy sales of the lighting customer are directly related to the temperature of the previous month, while the monthly sales of the industrial customer are directly related to the temperature of the present month. In addition, for each type of customers, there is an obvious correlation between the total power sales revenue and the total energy sales. Furthermore, the estimated elasticity of the total power sales revenue versus total energy sales is about 0.5 for the lighting customer, and about 1 for the industrial customer. Since the total power sales revenue is the product of total energy sales times the average electricity price, when the total power sales revenue increases 1% with the total energy sales only increases 0.5%, it implies that the increase of total power sales revenue not just only comes from the increase of energy sales, but also partially affected by the increase of average electricity price. Similarly, for the industrial customer, when the elasticity of their monthly total power sales revenue versus total energy sales is close to 1, it implies that when the total power sales revenue increases 1%, the total energy sales also increase about 1%. In other words, the change of percentage of the total power sales revenue is mostly attributed to the variation of total energy sales, not because of the average electricity price. As for the simulation results of the total power sales revenue, those of the lighting and industrial customers are both gradually increasing between the years 1999 to 2002. However, the increasing pace of the industrial customer tended to slow down. Moreover, both types of the customers possess a similar trend that their total power sales are higher in statistical meaning for the months from July to October, and lower for February, for those above three years. Besides, among the variables affecting each type of customer’s power sales revenue, the energy sales is the most significant one, its parameter implies that whenever the total energy sales increases one unit, i.e. one kwh, it would affect the total power sales revenue by that amount equivalent to the figure of the parameter. According to the empirical results, the estimated parameter mentioned-above of the lighting customer is 2.69, and 1.35 of the industrial customer respectively. That implies one kwh unit price for the lighting customer is 2.69 N.T. dollars, and 1.35 N.T. dollars for the industrial customer. Moreover, from the elasticity of the total energy sales versus the total power sales revenue, it shows that the elasticity of the lighting customer is around 1.2, and the elasticity of the industrial customer is around 0.7. The underlining reason of the difference between the two figures could be that the electricity pricing structure of the lighting and industrial customers are quite different. The industrial customer is charged by two-part tariff including a demand charge for the capacity use and an energy charge for the kwh use. While the lighting customer is charged simply by a single rate, i.e. the energy use. Finally, the empirical results also show that the magnitude of the peak load and the load factor of the whole electricity system also affect the total power sales revenue of each type of the customer, though with much less effect.
187

台灣銀行業在中國營業據點的經營發展策略之研究 / A study on the operation and development strategy of Taiwan 's banking in Mainland China

張俊智, Chang, Chun Chih Unknown Date (has links)
台灣金融機構得以至中國大陸地區設置分支機構的法源主要來自於立法院在於2006年11月時修正准許台灣銀行業赴中國大陸地區設立分行。本研究針對39家台灣銀行業在中國大陸營業據點之經營策略與績效進行分析,並採採多元迴歸模型檢定其經營策略與績效之關係。 根據本文實證後的主要研究結果如下: 一、無論是以資產報酬率 (ROA) 或是股東權益報酬率 (ROE) 等兩項獲利指標所檢定的結果,均未有足夠的證據顯示台灣銀行業在中國大陸地區積極設置分行等據點的經營策略或方向是可行的。 二、由股東權益報酬率 (ROE) 分析的結果,支持台灣銀行業若採行提早投入中國大陸地區設置實體據點的發展策略,對於其股東權益報酬率 (ROE) 會呈現顯著的正向關係。 三、無論是以資產報酬率 (ROA) 或是股東權益報酬率 (ROE) 來做為被解釋變數,結果皆無法支持台灣銀行業在中國大陸地區設置分行等實體據點的數量規模大小與銀行的資產報酬率 (股東權益報酬率) 有關。 / Because of the Legislature amended the Act in November 2006, Taiwan’s Banking had been permitted and set up branches in mainland China since 2006. This paper analyzed the business strategy and performance of 39 Taiwanese banks in mainland China. The multiple regression models were adopted and we test the relationship between their business strategy and performance. The main results of this paper were as follows: First, whether the rate of return on assets (ROA) or return on equity (ROE) profitability indicators, there is no sufficient evidence that the Taiwan’s banks actively set in mainland China Branches and other positions of the business strategy or direction is feasible according to the other two test result. Second, as a result of the ROE analysis, it is significant to support the Taiwan’s banking industry to adopt the development strategy of setting up an entity base in mainland China, which has a significant positive effect on the ROE. Third, whether the return on assets (ROA) or the return on equity (ROE) as an explanatory variable, the results are unable to support that the the scale of Taiwan’s banking in mainland China have a relation with the ROE or ROA.
188

Method of Infant Feeding as a Predictor of Maternal Responsiveness

Drake, Emily Eiwen 01 January 2005 (has links)
Infants need to develop effective, secure attachment to their primary caregivers in the first year of life. Researchers have not been able to identify all the factors that may influence the development of infant attachment. Most of the studies in this area have been done without regard to infant feeding as a potential factor. Maternal responsiveness appears to be key in the child's development of secure attachment behaviors, yet even after decades of research on infant attachment and maternal responsiveness, there is little evidence available to assist with early identification of families at risk and few interventions known to be effective in promoting maternal responsiveness.The research questions for this study were: 1) Do mothers who exclusively breastfed their infants for at least 6 weeks report more maternal responsiveness behaviors 2-4 months after delivery compared to mothers who exclusively formula feed their infants? 2) How well does breastfeeding duration predict self-reported maternal responsiveness at 2-4 months once socio-demographics and maternal characteristics (i.e., self-esteem, satisfaction with life) are statistically controlled?A cross-sectional survey design was used to assess the variables of maternal responsiveness, feeding patterns, and maternal characteristics in a convenience sample of 200 mothers in the first 2-4 months after delivery. The 60-item instrument included scales to measure maternal responsiveness (MIRI: Amankwaa et al., 2002), self-esteem (RSE: Rosenberg, 1965), and satisfaction with life (SWLS: Diener et al., 1985) as well as infant feeding and socio-demographic questions. A mixed mode data collection strategy was used combining Internet data collection with traditional paper-and-pencil survey methods.Somewhat surprisingly, mothers who exclusively breastfed for at least 6 weeks did not report any more maternal responsiveness behaviors compared to mothers who formula fed their infants. Hierarchical multiple regression analysis revealed that satisfaction with life, self-esteem, and parity, but not breastfeeding, explained a significant portion of the variance in self-reported maternal responsiveness scores. Further research in this area is needed. It should be noted that this is one of few studies of maternal responsiveness using a self-report instrument and may also be the first study of maternal responsiveness using Internet data collection.
189

Dinâmica espacial e contingências socioambientais da hanseníase no Estado do Maranhão: avaliação de riscos e vulnerabilidade em áreas hiperendêmicas / Spatial dynamics and socio and environmental contingencies of leprosy in Maranhão state: risk assessment and vulnerability in hyperendemic areas

Rangel, Mauricio Eduardo Salgado 22 September 2016 (has links)
A hanseníase, doença crônica estigmatizante com potencial de causar danos neurológicos, resulta da infecção pelo Mycobacterium leprae. Análises epidemiológicas atuais têm utilizado ferramentas clínicas e de análise espacial para o mapeamento dos principais focos de ocorrência de doenças e de áreas de alto risco. Analisar os municípios maranhenses quanto à distribuição dos casos de hanseníase torna-se uma ferramenta a mais na prevenção e controle da Hanseníase no estado por inúmeros fatores: comporta-se como área hiperendêmica de hanseníase; apresenta fluxo migratório intenso com outras cidades de forma interestadual; e tem grandes contrastes sociais marcados por pouca, ou nenhuma, infraestrutura básica em algumas áreas dos vários municípios deste. Objetivos: Analisar a distribuição espaço-temporal da hanseníase para o estado do Maranhão, no período de 2001 a 2013. Identificar a ocorrência de agrupamentos espaços-temporais de provável alta transmissão (risco) e verificar se há associação dessa distribuição de taxas de detecção de risco relativo (RR) da doença com as variáveis do contexto geográfico como socioeconômicas e ambientais. Metodologia: A fonte de coleta dos dados clínicos e epidemiológicos foi o Sistema de Informação Nacional de Agravos Notificáveis do Ministério da Saúde e dos dados demográficos, ambientais e bases cartográficas digitais do Instituto Brasileiro de Geografia e Estatística. Foi adotada uma abordagem ecológica sobre tendências dos padrões espaçostemporais de transmissibilidade, com utilização dos métodos: varredura espacial (scan), para a identificação dos agregados (clusters) de risco, considerando o modelo de distribuição de probabilidade Discreto de Poisson; Estimador Bayesiano Empírico para a suavização local de taxas, a partir de informações de municípios vizinhos tendo como estratégia de construção o critério da contiguidade; regressão múltipla espacial considerando uma modelagem com distribuição de Poisson no contexto Bayesiano, levando em conta a dependência espacial, com o propósito de avaliar a relação entre a ocorrência da variável dependente com as variáveis demográficas, socioeconômicas e ambientais. Resultados: A taxa média de detecção foi de 6,73 casos por 10.000 hab., com 53.826 casos notificados no período. O estudo revelou que a distribuição dos casos de sexo masculino (57,75%) apresentou maior proporção em relação ao feminino (42,25%), havendo predominância da doença na faixa etária >15 anos (89,87%). A alta ocorrência na classificação operacional multibacilar (60,10%) é um forte indicativo decorrente do longo período de incubação da doença somado ao não diagnóstico precoce. A análise da distribuição dos agregados espaciais identificou 14 (7 de risco alto e 7 de risco baixo) e 6 (3 de risco alto e 3 de risco baixo) agrupamentos espaciais, considerando-se 10% e 50% da população em risco, respectivamente, em áreas com taxas de detecção alta e que possuem baixa qualidade de vida. O estimador Bayesiano empírico local possibilitou gerar índices corrigidos e com menores instabilidades. A análise de regressão múltipla espacial mostrou que as variáveis índice Gini, bioma predominante cerrado/caatinga e percentual de população urbana tiveram associação positiva e significativa para explicar o risco relativo (RR) no estado do Maranhão. Conclusões: O estudo mostrou que existem aglomerados com elevado risco para transmissão da hanseníase no estado do Maranhão. A associação entre o risco relativo da hanseníase e o percentual de população urbana indica que a hipótese que associa o M. leprae e a população que vive em condições de acentuada desigualdade socioeconômica ainda é forte. Essa hiperendemicidade pode demonstrar que o crescimento da população urbana é um preditor de incidência da hanseníase, face à urbanização descontrolada e ao fluxo de migrantes advindos de diferentes espaços rurais. Foi possível identificar áreas prioritárias para implementação de programas eficazes de controle de hanseníase no estado do Maranhão. / Leprosy, a chronic stigmatizing disease with the potential to cause neurological damage resulting from infection by Mycobacterium leprae. Current epidemiological studies have used clinical and spatial analysis for mapping of the main occurrence of disease outbreaks and high-risk areas. Analyze the municipalities of Maranhão state regarding the distribution of leprosy cases becomes another tool in the prevention and control of leprosy in the state by numerous factors like behaves as hyper-endemic area of leprosy; It presents intense migration to other interstate cities; and has great social contrasts marked by little or no basic infrastructure in some areas of several municipalities.. Objectives: To analyze the spatiotemporal distribution of leprosy in the Maranhão state, from 2001 to 2013. To identify the spatiotemporal clusters occurrence of probable high transmission (risk) and check for association of this distribution of relative risk (RR) detection rates of the disease with the variables of geographic context as socioeconomic and environmental. Methodology: Clinical and epidemiological data was obtained from the Ministry of Healths Disease Reporting System and demographic data, environmental and digital cartographic bases were obtained from the Brazilian Geography and Statistics Institute. An ecological approach to trends transmissibility of spatiotemporal patterns, using the methods: spatial scan to identification the clusters of risk, considering the Discrete Poisson probability distribution model; empirical Bayesian method was applied for local rate flattening, using data from municipalities having as building strategy the criterion of contiguity; ecological regression modeling with considering a Poisson distribution in the Bayesian context, taking into account the spatial dependence, in order to evaluate the relationship between the occurrence of the dependent variable with demographic, socioeconomic and environmental variables. Results: The mean detection rate was 6.73 cases per 10,000 inhabitants, with 53,826 reported cases. The study revealed that the distribution of male cases (57.75%) showed a predominance over female (42.25%), with predominance of the disease in the age group upper than 15 years (89.87%). The high occurrence in operational classification multibacillary (60.10%) is a strong indication due to the long incubation period of the disease added to no early diagnosis. The analysis of the distribution of spatial clusters identified 14 (7 high risk and 7 low risk) and 6 (3 high risk and 3 low risk) spatial clusters, considering 10% and 50% of the population at risk in areas with high detection rates and which have low quality of life. Local empirical Bayes estimator allowed to generate fixed and minor instabilities indexes. The best results of modeling to spatial multiple regression analysis for the relative risk (RR) presented for the variables Gini index, cerrado/caatinga biome and percentage of urban population. Conclusions: The study showed that there are clusters at high risk for transmission of leprosy in the Maranhao state. The association between the relative risk of leprosy and the percentage of urban population indicates that the hypothesis that associates M. leprae and the population living in severe socioeconomic inequality is still strong. This hyperendemicity can demonstrate that the growth of the urban population is a predictor incidence of leprosy due to uncontrolled urbanization and the influx of migrants coming from different rural areas.It was possible to identify priority areas for implementation of effective leprosy control programs in the Maranhão state.
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Impact of Teacher and Student Ethnicity on Student Assessments

Barnes, Barbara (Principal) 05 1900 (has links)
The purpose of the study was to answer the questions: Do students show greater academic success in English language arts/reading as measured by the Texas Assessment of Knowledge and Skills (TAKS) exam scores in secondary education when their teachers are the same ethinicity? Do students show greater academic success in math as measured by the TAKS exam scores in secondary education when their teachers are the same ethnicity? Minority students' success on the TAKS test was compared to the assessment scores of White students from the 2010-2011, 2011-2012, and 2012-13 school year in thre suburban school districts. This topic has been a subject of discussion since the late 10970s when Cardenas and Cardenas (1977) studied the achievement among minority students and their White peers. The conversation continued through authors such as Takei and Shouse (2008), Hays (2011), Ladson-Billings (2006), Dee (2003, 2005), and Brown (2006). To answer these research questions, a hierarchical multiple regression analysis was conducted on the data collected. Although the study verified the achievement gap between minority students and White students, the study indicated no consistent pattern corroborating that minority students were more successful when taught by teachers of the same ethnicity. In many cases, students learned better with teachers of a different ethnicity. Black students were successful with Hispanic or White teachers, Hispanic students were successful with Black or White teachers, and White students were successful with Black or Hispanic teachers. The TAKS assessment scores were the only data used to support this analysis.

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