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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.
51

Longitudinal Links between Perfectionism and Depression in Children

Asseraf, Marielle 05 December 2013 (has links)
The temporal relationship between two types of perfectionism— self-oriented perfectionism (SOP) and socially prescribed perfectionism (SPP)— and depressive symptoms was examined in a sample of 653 children across Grades 6 (depressive symptoms only), 7, and 8. A vulnerability model, in which perfectionism affects depressive symptoms, was compared to a scar model, in which depressive symptoms affects perfectionism, and to a reciprocal-causality model, in which both constructs concurrently affect each other across time. Cross-lagged paths analyses using structural equation modeling supported a scar model where increases in depressive symptoms lead to increases in SPP, but not SOP. The findings applied to both boys and girls. Results suggest that in childhood, depressive symptoms increase the perception that others are expecting excessively high standards from oneself and the need to satisfy this perception.
52

自我体験に関する縦断面接調査 : 3年後の報告

天谷, 祐子, Amaya, Yuko 27 December 2004 (has links)
国立情報学研究所で電子化したコンテンツを使用している。
53

An epidemiological investigation of injuries among high school cross country runners /

Rauh, Mitchell John Dale. January 1998 (has links)
Thesis (Ph. D.)--University of Washington, 1998. / Vita. Includes bibliographical references (leaves [75]-82).
54

The role of gingivitis in the loss of periodontal attachment and teeth

Schätzle, Marc. January 2005 (has links)
Thesis (doctoral)--Malmo University, Sweden, 2005. / Added t.p. with thesis statement inserted. Includes bibliographical references.
55

The role of gingivitis in the loss of periodontal attachment and teeth

Schätzle, Marc. January 2005 (has links)
Thesis (doctoral)--Malmo University, Sweden, 2005. / Added t.p. with thesis statement inserted. Includes bibliographical references.
56

Analysing longitudinal data in the presence of missing responses with application to SLID data /

Braimoh, Adebola, January 2004 (has links)
Thesis (M.A.S.)--Memorial University of Newfoundland, 2004. / Bibliography: leaves 77-78.
57

The performance of missing data treatments for longitudinal data with a time-varying covariate

Adachi, Eishi, Pituch, Keenan A., January 2005 (has links) (PDF)
Thesis (Ph. D.)--University of Texas at Austin, 2005. / Supervisor: Keenan A. Pituch. Vita. Includes bibliographical references.
58

Assembléias zooplanctônicas (Cladocera, Copepoda e Rotifera) e condiçoes limnolócas no gradiente longitudinal barragem-jusante do reservatório de Itaipu, rio Paraná (Brasil, Paraguai e Argentina)

Portinho, Jorge Laço [UNESP] 18 March 2011 (has links) (PDF)
Made available in DSpace on 2014-06-11T19:30:12Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-03-18Bitstream added on 2014-06-13T19:18:37Z : No. of bitstreams: 1 portinho_jl_me_botib.pdf: 988699 bytes, checksum: 35177a563b0c79b60df1a761f31652d9 (MD5) / Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) / O objetivo deste estudo foi analisar a distribuição longitudinal e os atributos ecológicos das assembléias zooplanctônicas (Copepoda, Cladocera e Rotifera) e as variáveis limnológicas na zona lacustre do reservatório de Itaipu, trecho do rio Paraná a jusante e desembocadura dos rios Iguaçu e Monday, os quais não sofrem influência de barragem. Para tanto, foram realizadas coletas em dois períodos distintos: período seco (inverno 2009) e período chuvoso (verão 2010), em nove estações de amostragem: uma em ambiente lêntico, a montante da barragem de Itaipu, seis no rio Paraná, uma na foz rio do Monday – Paraguai, e outra na foz do rio Iguaçu – Brasil/Argentina. Foram obtidas amostras de qualitativas, através de arrastos horizontais, e quantitativas (tréplicas), através de arrastos verticais de 20 m (1.143 litros), ambas com rede de 50 μm. Os seguintes parâmetros físicos e químicos da água foram medidos na região de superfície e meio do canal dos rios: transparência, temperatura, velocidade, pH, oxigênio dissolvido, condutividade elétrica, turbidez, material em suspensão (frações orgânicas e inorgânicas), nitrogênio total, fósforo total, silicato dissolvido e biomassa fitoplanctônica (clorofila a). Para auxiliar na interpretação dos dados determinou-se a riqueza de espécies (S), o índice de Shannon-Wiener (H‟), a Equitabilidade de Pielou (J‟). Foram feitas ainda análises de componentes principais (ACPs), de correspondência canônica (ACCs), de agrupamento por similaridade (UPGMA) e de variância ANOVA “two-way”, todas estas baseadas na abundância e composição dos microcrustáceos e rotíferos. As ACPs indicaram a separação dos pontos entre os períodos (seco e chuvoso) e as variáveis limnológicas atuantes na diferenciação. A região a jusante da barragem de Itaipu, no rio Paraná, foi distinta dos rios Iguaçu e Monday... / The aim of the study was to analyze the longitudinal distribution and ecological attributes of the zooplankton assemblages (Copepoda, Cladocera and Rotifera) and the limnological variables in the Itaipu Reservoir and Paraná River stretch downstream the dam –and Iguazu and Monday Rivers. Samples were collected in two distinct periods: dry season (winter 2009) and rainy season (summer 2010), in nine sampling stations: one site in lentic environment upstream of the Itaipu Dam, six sites in the Paraná River, one site in the mouth of Monday River – Paraguay River, and one site in the mouth of the Iguazu River - Brazil/Argentina. The zooplankton was collected (treplicates) through vertical hauls (20 m depth; 1,143 liters), for quantitative analyses, and through horizontal throws for qualitative analyses, both with a 50 μm plankton net. The following physical and chemical water parameters were measured on the surface water, in the middle of the river channel: transparency, temperature, water speed, pH, dissolved oxygen, conductivity, turbidity, suspended matter (organic and inorganic fractions), total nitrogen, total phosphorus, dissolved silicate and phytoplankton biomass (chlorophyll a). In order to improve the data interpretation it was calculated the species richness (S), Shannon-Wiener index diversity (H ') and Pielou evenness (J'). It was also performed Principal Component Analyses (PCAs), Canonical Correspondence Analyses (CCAs ), cluster analyses (UPGMA) and variance analyses (ANOVA two-way ), all of them based on the abundance and composition of microcrustaceans and rotifers. The ACPs indicated the separation of sites between the seasonal periods and limnological variables interfering in the distributions. Sites downstream the Itaipu Dam, in the Parana River, were distinct from the ones in Iguazu River and Monday River. These last two sites contributed to the increase... (Complete abstract click electronic access below)
59

Longitudinal Links between Perfectionism and Depression in Children

Asseraf, Marielle January 2013 (has links)
The temporal relationship between two types of perfectionism— self-oriented perfectionism (SOP) and socially prescribed perfectionism (SPP)— and depressive symptoms was examined in a sample of 653 children across Grades 6 (depressive symptoms only), 7, and 8. A vulnerability model, in which perfectionism affects depressive symptoms, was compared to a scar model, in which depressive symptoms affects perfectionism, and to a reciprocal-causality model, in which both constructs concurrently affect each other across time. Cross-lagged paths analyses using structural equation modeling supported a scar model where increases in depressive symptoms lead to increases in SPP, but not SOP. The findings applied to both boys and girls. Results suggest that in childhood, depressive symptoms increase the perception that others are expecting excessively high standards from oneself and the need to satisfy this perception.
60

The impact of custodial grandparenting on levels of cognition in a longitudinal sample of grandparents raising grandchildren

McKay, Ian Timothy 03 May 2019 (has links)
There are currently 2.7 million grandparents raising grandchildren in the United States. As grandparenting has become more prevalent, concerns have surfaced regarding the effect of additional caregiving responsibilities placed on an aging population. The following study uses an existing dataset that interviewed individuals who graduated from Wisconsin high schools in 1957. The present study examined the impact of grandparenting on measures of cognitive ability, both cross-sectionally and longitudinally, which had yet to be examined. Findings from the cross-sectional analysis show that custodial grandparents outperformed their non-custodial grandparent counterparts on the cognitive tests of word recall, category fluency, letter fluency, and cognitive similarities. Findings from the longitudinal analysis show that though custodial grandparents had initially performed worse on the digit ordering task, their scores declined at a much slower rate over-time when compared to non-custodial grandparents. This study provides a unique opportunity to examine the impact of custodial grandparenting on cognition.

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