942 resultados para Dynamic modulus of elasticity
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Photocopy of original: Berkeley : Structural Engineering Laboratory, University of California, 1974.
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"USAAVLABS technical report 67-38."
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"February 1983."
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"Project No. 7351."
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"Task 9R95-20-001-01. Contract DA 44-177-TC-802."
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Bibliography: p. 503-517. "Bibliographical note" at end of each chapter except the last.
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Mode of access: Internet.
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Mode of access: Internet.
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"Project no. 9782. Contract AF 49 (638)-430 ... CU-11-60-AF-430-CE."
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Includes bibliographical references.
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Includes bibliographical references and index.
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Prepared for Environmental Research Laboratory, Office of Research and Development, U. S. Environmental Protection Agency, Athens Georgia.
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Mode of access: Internet.
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Context: There is evidence suggesting that the prevalence of disability in late life has declined over time while the prevalence of disabling chronic diseases has increased. The dynamic equilibrium of morbidity hypothesis suggests that these seemingly contradictory trends are due to the attenuation of the morbidity-disability link over time. The aim of this study was to empirically test this assumption.Methods: Data were drawn from three repeated cross-sections of SWEOLD, a population-based survey among the Swedish men and women ages 77 and older. Logistic regression models were fitted to assess the trends in the prevalence of Activities of Daily Living (ADL) disability, Instrumental ADL (IADL) disability, and selected groups of chronic conditions. The changes in the associations between chronic conditions and disabilities were examined in both multiplicative and additive models.Results: Between 1992 and 2011, the odds of ADL disability significantly declined among women whereas the odds of IADL disability significantly declined among men. During the same period, the prevalence of most chronic morbidities including multimorbidity went up. Significant attenuations of the morbidity-disability associations were found for cardiovascular diseases, metabolic disorders, poor lung function, psychological distress, and multimorbidity.Conclusion: In agreement with the dynamic equilibrium hypothesis, this study concludes that the associations between chronic conditions and disability among the Swedish older adults have largely waned over time.
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Thesis (Ph.D.)--University of Washington, 2016-06