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 173 for “"growth curve"”.
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Growth Curve Analysis of Soybean Cultivars
To study the methodology for functional growth analysis of soybean and to find out the growth characteristics of soybean cultivars, two experiments were conducted at the Agronomy Plant Pathology South farm of the University of Illinois during the years 1985 and 1986.
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Toward an Appropriate Fetal Growth Curve for South Dakota
… 4. To construct sex specific and combined fetal growth curves appropriate for babies born in the eastern portion of South Dakota.</p>
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Effects of Family Involvement: Early Childhood Cognitive Outcomes Using Longitudinal Growth Curve Models
… to literacy, numeracy, and family resources. Growth curve models suggested increased levels of involvement as children progressed from preschool to first grade. Higher levels of involvement for Literacy for observed for children in Head Start during the first data collection follow-up. The …
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A latent growth curve model from the perspective of a structural equation model
Latent growth curve modeling (LGCM) is a multivariate technique suited for explaining change over time. In this dissertation, the theoretical background needed to address the specification and estimation of a latent growth curve model from the perspective of a structural equation model (SEM), is …
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Handling Missing Data in the Multivariate Growth Curve Model: Comparative Evaluations Using Extensive Simulations
The multivariate growth curve models (GCMs) are generalized multivariate analysis of variance (GMANOVA) models useful in analyzing of longitudinal data, growth curves or other datasets involving response curves. Unlike the MANOVA model and traditional linear models (eg. generalized linear mixed …
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Comparison of growth curve models for assessing height in a South African birth cohort
… babies between 0 and 4 years of age to construct growth curves, which serve as a tool for assessing the health and nutritional progress of children. We wish to characterise the way height changes over time and identify predictors of that change. Various mixed effect models were fit and compared to …
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Logistic growth curve parameter estimates for scrotal circumference and relationships with female reproduction in crossbred sheep
… In group one, seasonal patterns of testis growth through 16 mo of age were assessed on 40 spring-born ram lambs (eight Barbados Blackbelly, 10 Suffolk and 22 1/2-Dorset, 1/4-Finnish Landrace, 1/4-Rambouillet). Scrotal circumference (sc) and body weight (wt) were measured at mean ages of 30, …
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Gender differences in symptom change for court-placed youth in residential treatment : a latent growth curve analysis
… symptom severity every four weeks. Latent Growth Curve Modeling (LGCM) was implemented to obtain growth trajectories of symptom change over time. The hypothesis that females would enter residential treatment with greater psychopathological symptoms was supported; however, no gender …
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Functional Interplay Between Neurocognitive Decline and Risk Factors in Older Adults: A Multivariate Latent Growth Curve Model of Risk
… intervention. The present study employed Latent Growth Curve modeling to longitudinally examine relevant risk factors relationship with neurocognitive functioning via neuropsychological assessment of executive attention, processing speed, episodic memory, language and working memory in 576 …
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A Latent Growth Curve Analysis of Peer Difficulties, Self-Perceptions, and Peer Beliefs: Links to Psychological and School Adjustment
… avoidance were examined. Findings from latent growth curve analyses supported the contention that relational stressors are related to externalizing problems through more hostile peer beliefs and are associated with internalizing and school adjustment difficulties through maladaptive self and …
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A Growth Curve Analysis Study Examining the Relationship Between a Meditation-Based Stress Reduction Program and Components of Subjective Well-Being
Using growth curve analysis (Francis et al., 1991; Rogosa, Brandt, & Zimowski, 1985), this study tested a model for the experience of beginning meditators. I posited that a successful novice meditator, over the course of a six-session Meditation-Based Stress Reduction Program, would experience an …
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Using resonant MEMS pedestal sensors and filtering techniques to determine the growth curve of MDA-MB-231, metastatic breast cancer cells
… for understanding underlying mechanisms for growth, cell cycle control, cell mass, cell adhesion to surfaces, and ultimately the nature of cancer cells. A resonant pedestal sensor was used to study single, adherent cells non-invasively. This measurement tool was preferred over other methods …
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A Latent Growth Curve Model (LGCM) Analysis of the Relationship Between Five School Climate Dimensions and Retention of Core Subject Secondary Teachers in Georgia
… (2015 – 2020), and a univariate quadratic latent growth curve model was used to estimate school-level teacher retention trajectories and assess the predictive value of school climate over 4 years (2016 – 2019). Grounded in Wang and Degol’s (2016) conceptual framework, five school-level dimensions …
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Crack Path Bifurcation at a Tear Strap in a Pressurized Stiffened Cylindrical Shell
… is used in the criterion for ductile crack growth, and the critical value of the CTOA is determined by correlating the STAGS predictions of the stable portion of the crack growth curve (internal pressure versus half crack length) to the test. With the employment of a new STAGS algorithm, the …
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Effects of Promoting Health Among Teens: A Brief General Health Program Intervention For African American Adolescents From A Multi-Site Trial
… and twelve months. Hierarchical linear growth curve modeling indicates that participants in PHAT had significantly greater health knowledge than controls. However, there were no growth curve differences in dietary behavior and modest differences regarding physical activity, and drug use …
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Self-regulated Learning in Doctor of Physical Therapy Students
… across time in order to generate longitudinal growth curve models. Results revealed that the SDLRSNE is an internally consistent tool to utilize with DPT students and that the majority of DPT students were self-regulated learners. Results from the growth curve models indicated that …
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Longitudinal Associations among Adolescent Socioeconomic Status, Delay Discounting, and Substance Use
… This prospective longitudinal study used latent growth curve modeling (GCM) to examine the contributions of SES on adolescent delay discounting and substance use in a sample of 167 adolescents (52% male). Confirmatory factor analysis (CFA) was used to compute SES factor scores across three waves …
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Effectiveness of Medicare's Nonpayment Policy On Hospital-Acquired Conditions
… a whole. A repeated measures Poisson regression growth curve model was estimated to analyze the rate of HACs over the five-year period of interest. </p> <p> The mean rate of HACs was greater after the policy than before; however, when adjusting for hospital and patient characteristics, the rate …
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