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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.
71

Modeling the Pathways of Manganese (Mn) Exposure from Air, Soil, and Household Dust to Biomarker Levels in 7-9 Year Old Children Residing Near a Mn Refinery

Stolfi, Adrienne 16 June 2020 (has links)
No description available.
72

An Investigation of the Impact of Chld Care Quality on Child Outcomes Using Structural Equation Modeling

Cutler, Jared 01 May 2004 (has links)
The quality of a child care setting is believed by many child care researchers to have an impact on the development of children in child care. While a considerable amount of research has been done regarding the impact of child care quality on child outcomes, an examination of literature reviews on the topic reveals that there is a lack of consensus in the field on the question of whether child care quality has a substantial impact on children's development. The present study assessed the impact child care quality has on child outcomes. A dataset from the NICHD Early Child Care Study involving 878 subjects was used. Analyses utilizing structural equation modeling indicated that child care quality has a substantial impact on children's development, even when the influence of demographic and family variables is taken into account.
73

Identifying the Underlying Components of Delay Discounting Using Latent Factor Modeling

DeHart, W. Brady 01 May 2017 (has links)
Many problematic behaviors can be conceptualized as choosing a smaller, immediate outcome over a larger, delayed outcome. For example, drug abuse involves choosing between the immediate euphoric effects of the drug and the delayed health and legal consequences of drug abuse. Individuals that consistently choose the smaller outcome are said to behavior “impulsively.” The goal of this dissertation was to understand how to change impulsive choice. Chapters 2 and 3 successfully demonstrate that impulsive choice can be altered by reframing how the choice is presented. For example, framing a delayed outcome using a specific date instead of a duration of time (e.g., 1 year) reduced impulsive choice. However, these findings do not explain why impulsive choice changed. The goal of Chapter 4 was to identify the underlying processes that result in impulsive choice with the hopes that by understanding these processes, impulsive choice can be reduced. Latent factor modeling was used to understand the role if three proposed processes in impulsive choice: marginal utility, cardinal utility, and nonlinear time perception. The results of the latent factor model indicated that nonlinear time perception does relate to how delayed outcomes are valued but not marginal utility and cardinal utility.
74

A Structural Equation Modeling Approach Combining Multitrait-Multimethod Designs with Moderated Mediation Analysis

Litson, Kaylee 01 August 2019 (has links)
Researchers who study clinical and developmental psychology are often interested in answering questions such as how interventions work, when treatment begins to improve health outcomes, or for whom treatment has the greatest impact. Answers to these and similar questions impact the general understanding of health and behavior, and can be imperative for effectively implementing intervention and prevention programs. To evaluate such complex relationships among variables, researchers have turned to moderated mediation analysis. Moderated mediation analysis is a statistical tool used to identify the conditional processes among observed or latent variables. However, in developmental and clinical psychology, variables are regularly measured using multiple sources or multiple methods. In fact, best practice recommendations in clinical psychology suggest measuring variables with multiple methods (Achenbach, 2006). The question arises how to use multimethod assessments in statistical analyses such as moderated mediation analysis. The objectives of the present study were to create a multimethod moderated mediation model, apply the model to an extant dataset of child developmental behaviors, and evaluate conditions under which the model performed well using a Monte Carlo simulation study. Results from the application showed that the indirect path from hyperactivity to academic impairment through oppositional defiant behavior was significant but not moderated by inattention. Results from the simulation study indicated that excluding true method effects from a moderated mediation model resulted in unacceptable parameter and standard error bias. These results point to the advantages of using the M4 model to evaluate moderated mediation in the presence of multimethod data.
75

Shepherding the flock: How identification with a brand community leads to brand religiosity within community

Hardman, Haley Elizabeth 12 May 2023 (has links) (PDF)
In a traditional sense, religion has been culturally, societally, and relationally influential on humankind in substantial ways. However, consumers are shifting towards a more modern expression of religion in which brands are seemingly equal alternatives. This shift is viable due to the concept of brand religiosity within community, defined as an intense devotion to a brand that is central in a consumer’s life, which is contingent upon identification with a brand community. Across four studies, I show that the concept of brand religiosity has overlooked the importance of the brand community. Although the brand is important, brand religiosity is rooted in the brand community, and the brand is the mechanism to which community members express religiosity. Specifically, I conduct 24 in-depth interviews using a hermeneutic phenomenological approach to uncover antecedents and outcomes of brand religiosity within community. I empirically test the antecedents and outcomes of brand religiosity within community using Social Identity Theory. From there, I conduct a textual content analysis to reveal the nuances of brand religiosity within community in a different context. I analyze the role appreciation of the brand community plays in strengthening the outcomes of brand religiosity within community. Studies 1, 2, and 3 examine the positive aspects of brand religiosity within community; however, it is important to understand the construct holistically, so Study 4 analyzes the dark side of brand religiosity within community. Study 4 examines the outcomes of brand religiosity within community that could lend themselves to perceptions of fanaticism, ultimately hurting the brand through brand avoidance and dislike of the brand community. Conducting these studies offers answers to the following research questions – What are the antecedents and outcomes of brand religiosity within community? How do the antecedents influence brand religiosity within community and, ultimately, the outcomes? What are the nuances of brand religiosity within community? How does the appreciation of a brand community impact the relationships from brand religiosity within community to the outcomes? Does brand religiosity within community have a dark side? How can outcomes of brand religiosity within community lead to negative outcomes for a brand? Implications are also discussed.
76

Math Achievement Opportunity for American Mexican Children in Mexico: A Structural Equation Modeling Analysis Using Multilevel Data

Hernandez, Jimmy E. 15 April 2022 (has links)
Since the U.S. Recession of 2008, more Mexicans are leaving than coming to the United States. Many Mexican families return to Mexico with their U.S.-born--or American Mexican--children and youth. Approximately 700,000 American Mexican children and youth are now living and attending K-12 schools throughout Mexico (Gándara & Jensen, 2021; Jacobo-Suárez, 2017; Jensen et al., 2017; Passel et al., 2012). They are part of a broader category of students who have educational experiences on both sides of the border often referred to as transnational students. Return migration to Mexico presents both challenges and opportunities that affect their adaptation to Mexican schools. Current research identifies that they are “largely invisible” and face myriad bureaucratic, pedagogical, linguistic, and cultural challenges (Hamann et al., 2010, p. 230; Jensen & Jacobo-Suárez, 2019; Zúñiga & Hamann, 2013). Although research suggests these students may be at academic risk because of challenges related to their return migration, there is limited research on how they fare academically in Mexican schools. Some work addresses the effects of migration on school attendance and education attainment, but less is known about the effects of migration on academic achievement or other developmental outcomes (Giorguli et al., 2021; Jensen et al., 2018). The purpose of this study is to provide information for researchers, practitioners, and policymakers in both countries to enhance academic learning opportunities for American Mexican students. While it expands our current understanding of transnational students by providing information about how they are performing academically in Mexican schools. This includes insights about their (a) individual and family background characteristics, (b) school and community milieu, and (c) migratory context in relation to their math achievement. Employing an ecological framework and a structural equation modeling (SEM) approach with multilevel data, I analyze 2018 mathematics achievement and survey data of a nationally representative sample of sixth-grade students in Mexico (a) to determine how American Mexican sixth-grade students compare to their Mexican peers and transnational counterparts consisting of those who are born in Mexico and have studied in U.S. schools (i.e., Mexican returnees) in terms of math achievement; (b) to evaluate the effects of school and community variables and migration-related factors on their math achievement; and (c) to evaluate the extent to which effects of migration on math achievement are moderated by teaching and school climate. Descriptive results offer a new narrative about transnational students. Prior studies have raised questions about their academic well-being in Mexican schools, advancing the premise that they may be falling through the cracks and academically failing, particularly on the evidence of their challenges to integrate in Mexican schools related to return migration and higher grade retention rates compared to their Mexican peers. Key findings highlight that (a) while transnational students (i.e., American Mexican students and Mexican returnees) are largely invisible in Mexico's education system, their math achievement varies considerably with American Mexican sixth graders' mean performance close to the Mexican national average and Mexican returnees' performance almost one standard deviation below; (b) there are striking distinctions in their social, educational, and migratory milieu that may be providing different in-school and out-school experiences even though their challenges may overlap in some ways, and (c) there appears to be a durable math achievement disparity between transnational students across observed differences that is not explained by the privileged social class backgrounds of American Mexican students and other factors. The implications of these findings suggest the need for Mexican administrators and teachers to tailor how their educational needs are met as well as the need for further research to examine what factors explain their math achievement disparities. SEM model results show that urbanicity and marginalization have the largest negative effect relative to other school and community factors on the math achievement of American Mexican sixth graders. A unique finding is that American Mexican sixth graders attending schools in very rural areas of Mexico had better math outcomes than their peers in urban areas. The effects of school type on math achievement follows the narrative of Mexico in which students in private schools have better academic performance than their peers in indigenous or communitarian schools. Student learning support, as element of teaching quality, has a positive and significant effect. In terms of migration-related factors, exposure to family international migration history has a negative and significant including exposure to domestic migration but with a much smaller effect. Delayed migration plans have a positive and significant effect. Less acculturation time (i.e., recency of return) signifies better math performance, an insightful finding that is contrary to expectations. While school, community, and migration-related factors had significant effects, (a) their educational aspirations, (b) having experience with grade retention, (c) their mother's level of education, and (d) living in two-parent households show high relative importance of influence on their math achievement. The implications of these unprecedented findings are consequential to integration of the students we share across borders and their academic trajectories considering many American Mexican students aspire to return to and continue their education in the U.S. These findings suggest the need for binational collaboration between the U.S. and Mexico to enhance their academic learning opportunities.
77

Employing Quality Management Principles To Improve The Performance Of Educational Systems: An Empirical Study Of The Effect Of Iso 9001 Standard On Teachers And Administrators Performance In The Indonesian Vocational Education System

Kuncoro, Andreas 01 January 2013 (has links)
ISO 9001 has been world widely implemented in both manufacturing and service organizations. A lot of studies have been conducted to investigate the effects of ISO 9001 implementation on the performance of these organizations. Most of these studies show that ISO 9001 implementation realized positive operational improvements and financial success. Building on the merits of successful implementation of ISO 9001 quality management system in manufacturing and service, educational institutions have been attempted to adopt it in their operations. Even though there are studies relating ISO implementation to education, no research has been done to investigate the effects of ISO 9001 at the individual level. The objective of this research is to investigate the effects of ISO 9001 quality management implementation on the performance of administrators and teachers. The Indonesian vocational education system is selected as a case example as there is a significant number of such institutions in Indonesia that attempt to achieve ISO certification and there is a national need to improve the performance of vocational education. It is a challenge to assess objectively the degree of ISO 9001 implementation in this specific educational context because of the size and diversity. This study relies on survey that measures the respondents’ perception. Hence, this study applies a self-reported survey based performance measurement. The questionnaires are developed based on extensive literature review. Partial Least Squares Structural Equation Modeling (PLSSEM) has been used to examine the relationships between the different elements of quality management systems, quality culture; administrator and teacher performances. The study is able to examine multiple interrelated dependence and subsequent relationships simultaneously among examined factors such as teacher and administrator performance, existing iv quality culture and ISO principles; and to incorporate variables that cannot be directly measured, such as leadership, for example. The findings of this study show that ISO 9001 implementation has positive significant effect on the performance of the vocational school administrator and teacher. The study also identifies key influencing elements of the ISO quality management system and examines their direct and indirect relationships with teacher and administrator performances. This study is expected to improve the current practices in implementing ISO and quality culture in any educational settings, specifically in the case of vocational educational system.
78

EXPLORING BOOTSTRAP APPLICATIONS TO LINEAR STRUCTURAL EQUATIONS

PEI, HUILING 21 May 2002 (has links)
No description available.
79

An Empirical Test of the Nontraditional Undergraduate Student Attrition Model Using Structural Equation Modeling

Brown, Chad M. 27 July 2007 (has links)
No description available.
80

Commitment to Coaching: Using the Sport Commitment Model as a Theoretical Framework with Soccer Coaches

Huckleberry, Sheri D. 25 July 2011 (has links)
No description available.

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