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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.
1

An investigation into student understanding of energy in the context of mechanics /

Lindsey, Beth A. January 2008 (has links)
Thesis (Ph. D.)--University of Washington, 2008. / Vita. Includes bibliographical references (p. 278-280).
2

An investigation of student difficulties with two dimensions, two-body systems, and relativity in introductory mechanics /

Pride, Tara Ellen O'Brien. January 1997 (has links)
Thesis (Ph. D.)--University of Washington, 1997. / Vita. Includes bibliographical references (leaves [202]-206).
3

A study of exergy destruction and methods improving second law efficiency in common production engines using a thorough analysis of engine simulation results

Carpenter, Nolan A. W. January 2009 (has links) (PDF)
Thesis (M.S.)--University of Alabama at Birmingham, 2009. / Title from PDF title page (viewed Sept. 2, 2009). Includes bibliographical references (p. 63-65).
4

Effects of mechanical energy on anaerobic capacity during a supramaximal treadmill running : is there influence between runners and active individual /

Martínez González, Joel Abraham. January 2018 (has links)
Orientador: Alessandro Moura Zagatto / Banca: Fábio Augusto Barbieri / Banca: Leonardo Alexandre Peyré Tartaruga / Abstract: The purpose of the present study was t o determine the influence of biomechanical variables on anaerobic capacity and performance assessed with a supramaximal effort and if this relationship is depend ing on training expe rience reflected in the running technique . 22 healthy men participated in this descriptive study (29.18 ± 7.13 years, 175.27 ± 5.8 height and 71.54 ± 8.52 of mass ), divided in two groups, physical active (n=11) and amateur runners (n=11) with a V O 2max of 43.17±4.46 mL · kg - 1 · min - 1 for physical active and 55.45±5.58 mL · kg - 1 · min - 1 for amateur runners respectively. T he volunteers performed three supramaximal effort s in different days at 115% of the intensity associated to V O 2max ( i V O 2max 115% ) i n order to esti mate the anaerobic capacity (AC), calculate the total mechanical work (W [tot] ) and to test reliability of biomechanical variables (i.e. mechanical work and running kinematics ) . Pairwise Person correlations were calculated between all the biomechanical vari ables and AC as well as supramaximal effort performance to verify correlations and a multiple stepwise regression analysis were calculated in order to obtain the best predictor of AC and supramaximal effort performance. An ANOVA two way was used to verify the reliability of mechanical work calculations and to verify differences in biomechanical variables along the supramaximal effort (divided in four - time periods) . The major findings of the study were : 1) The swing... (Complete abstract click electronic access below) / Resumo: O objetivo do presente estudo foi determinar a influênc ia de variáveis biomecânicas na capacidade anaeróbia e no desempenho avaliado com um único esforço supramáximo, e se essa relação é dependente da experiência de treinamento refletida na técnica de corrida. Participaram n este estudo descritivo 22 homens s audáveis ( 29,18 ± 7,13 anos, 175,27 ± 5,8 estatura e 71,54 ± 8,52 de massa), divididos em dois grupos, fisicamente ativo (n = 11) e corredores amadores (n = 11) com V O 2máx de 43,17 ± 4,46 mL·kg - 1 ·min - 1 para atividade física e 55,45 ± 5,58 mL·kg - 1 ·min - 1 para corredores amadores, respectivamente. Os voluntários realizaram três esforços supramáximos em dias diferentes a 115% da intensidade associada a V O 2max (i V O 2max115% ) para estimar a capacidade anaeróbia (CA), calcular o trabalho mecânico total (W [tot] ) e testar a confiabilidade dos dados biomecânicos variáveis (isto é, trabalho mecânico e cinemática de corrida). Foram calculadas as correlações de Pairwise Person entre todas as variáveis biomecânicas e AC, bem como o desempenho de esforço supramáxi mo para verificar as correlações e uma análise de regressão múltipla foi calculada para obter o melhor preditor de AC e desempenho do esforço supramáximo. Uma ANOVA two way foi utilizada para verificar a confiabilidade dos cálculos do trabalho mecânico e v erificar as diferenças nas variáveis biomecânicas ao longo do esforço supramáximo (dividido em quatro períodos de tempo). Os principais achados do est... (Resumo completo, clicar acesso eletrônico abaixo) / Mestre

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