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.
Results
Showing 1 to 12 of 12 for “"secular changes"”.
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Secular changes in anthropometric and physical characteristics of South African National U/20 rugby union players (1998-2010).
The aim of this study was to compare changes in the physical and morphological characteristics of South Africa’s National U/20 rugby union players (Forwards and Backs) over a 12 year period from 1998 - 2010. This period spans an era starting just after the onset of professionalism of the game to …
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Quantifying spatial association between mineral deposits and geology across three African crustal segments of different age, with implication for secular change in mineralization during earth history
… the continental crust may be one way to test for secular changes in crustal genesis. This study collates and analyses fundamental information about mineral deposits with which to 'fingerprint' the metal endowment of African crust of different age. Three areas of juvenile African crust (e.g. mantle …
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Comparisons in the cranial form of the Blackfeet Indians: A reassessment of Boas' Native American data
… Lastly, this study examines the overall changes in the Blackfeet peoples throughout the nineteenth century as they were forced to change from nomadic hunter-gatherers to sedentary farmers living under Anglo-American policy on restricted lands.
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Comparisons in the cranial form of the Blackfeet Indians: A reassessment of Boas' Native American data
… Lastly, this study examines the overall changes in the Blackfeet peoples throughout the nineteenth century as they were forced to change from nomadic hunter-gatherers to sedentary farmers living under Anglo-American policy on restricted lands.
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Fingerprints and Drivers of Recent Changes in Oceanic Oxygen: From Regional to Global Scales
… of external forcing factors to observed changes in dissolved oxygen concentration ([O2]) relative to natural internal variability is examined using statistical methods which synthesise historical measurements and ocean biogeochemistry model output. Using a formal optimal fingerprinting …
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Essays on Fertility and the Economy in Venezuela
… by union cohort and to empirically investigate changes in childbearing patterns. The results show that compared to the 1967-1968 union cohort, all subsequent union cohorts decline in total fertility in the first 14 years after entering the first union. This finding raises the possibility that …
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Regional Sea Level Rise Along the United States Coasts
… sea level (RSL) rise. Ocean dynamics along with changes in Earth’s gravitational field can cause RSL to deviate from the change in GMSL. During the satellite altimeter era covering the past two decades, RSL trends can be four times the global average, with much of this spatial variation due to …
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Attribution of stratospheric ozone change and associated climate impacts
… to understand whether the observed historical changes, during both the depletion and recovery eras, are directly the result of secular changes in ODSs, or influenced by other anthropogenic and natural forcings such as greenhouse gases (GHGs) and solar variability. This thesis explores the …
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Air-ground temperature exchange
… and ground surface remains constant. However, secular changes in boundary-layer factors can generate anomalous ground temperatures. This dissertation is an investigation of factors that cause separation of air and ground temperatures on a seasonal to inter-annual time scale, including snow …
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Rhodoliths as environmental archives in the tropics
… elements along these growth bands can reflect secular changes in various environmental parameters. This study aims at assessing and further extending the ability of rhodolith-forms of coralline red algae to reconstruct environmental changes. Modern rhodoliths of the species Sporolithon durum …
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Rhodoliths as environmental archives in the tropics
… elements along these growth bands can reflect secular changes in various environmental parameters. This study aims at assessing and further extending the ability of rhodolith-forms of coralline red algae to reconstruct environmental changes. Modern rhodoliths of the species Sporolithon durum …
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The association of young maternal age and low socioeconomic status with poor birth outcomes in urban British Columbia
… in this study to be a mechanism for tracking secular changes in inequalities in health in British Columbia.