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 16 of 16 for “"time series study"”.
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Infrastructure, institutions and economic growth : a time-series study of the South African economy
A growing empirical has analysed the historical relationship between infrastructure and output in South Africa, finding a broadly positive effect that operates largely via the marginal productivity of private capital. We extend this literature by investigating the relationship between …
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Modelling the speciation and biogeochemistry of iron in oceanic surface waters at the Bermuda Atlantic Time-series Study site
… radiation at the site of the Bermuda Atlantic Timeseries Study (BATS). It contains an optimised ecosystem model which yields results close to the observational data from BATS.<br/><br/>Firstly, the results of a zero-dimensional model approach show that the mixed layer cycle strongly influences …
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The wages of fear: How gender, ideology, and symbolic threat influenced the voting behaviors of white southern women in the 2016 and 2020 presidential elections
… weaponized to influence voting behaviors. This study uses three sources of data: the 2016 ANES Time Series Study, the 2020 Time Series study, and a third source consisting of systematic analysis by CPOST in 2021 of those who stormed the U. S. Capitol on 6 January, included to further explore the …
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Approval of George W. Bush: Economic and media impacts
… rate had its shares of ups and downs. In this time series study I analyze the empirical evidence of the media's and economy's impact on his approval rate from 2001-2009. People tend to hold the president responsible for the country's economic performance and the media influences people's …
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The impact of assisted dying on suicidality: a synthetic control analysis of population suicide rates
… the consequences of such policies. I performed a time series study to determine how suicide rates changed in Belgium after assisted dying was introduced in 2002. The synthetic control method was chosen for the analysis, and additional European nations were included as placebos. The results show no …
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Information Seeking in a Virtual Learning Environment
Duplicating a time series study done by Kuhlthau and associates in 1989, this study examines the applicability of the Information Search Process (ISP) Model in the context of a virtual learning environment. This study confirms that students given an information seeking task in a virtual learning …
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Studying Janus behavior : how support, deterrence, grievances and organizational structure shape violent and peaceful behaviors
… at the behavior of organizations that have one time or another included militancy and non-violent mobilization in their tool box of behavioral options. This work examines transitions in organizational tactics from violence to non-violence in two ways. First, a cross-national time-series study …
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A determination of air-sea gas exchange and upper ocean biological production from five noble gases and tritiugenic helium-3
… mass ages. In this thesis, a fourteen month time-series of the five noble gases, helium-3 and tritium was measured at the Bermuda Atlantic Time-series Study (BATS) site. The time-series of five noble gases was used to develop a parameterization of air-sea gas exchange for oligotrophic waters …
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A determination of air-sea gas exchange and upper ocean biological production from five noble gasses and tritiugenic helium-3
… mass ages. In this thesis, a fourteen month time-series of the five noble gases, helium-3 and tritium was measured at the Bermuda Atlantic Time-series Study (BATS) site. The time-series of five noble gases was used to develop a parameterization of air-sea gas exchange for oligotrophic waters …
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Marine ecosystem model analysis using data assimilation
… two North Atlantic sites; the Bermuda Atlantic Time-series Study (BATS) and the North Atlantic Bloom Experiment (NABE). Model-data mists were reduced by between 45 and 50%. The addition of model complexity (a parameterised microbial loop, a variable chlorophyll a to nitrogen ratio and dissolved …
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Affecting U.S. education through assessment : new tools to discover student understanding
… of concept", a quasi-experimental, interrupted time series study was conducted using a computerized learning and assessment tool to observe second semester high school chemistry students solving qualitative chemistry problems. The results presented here suggest that: -- Without intervention, …
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Monthly variability in upper ocean biogeochemistry due to mesoscale eddy activity in the Saragasso Sea
… 1995, combined with hydrography and satellite altimetry, was used to observe the impacts of nine eddy events on primary productivity and particle flux in the Sargasso Sea. Measurements of primary production, thorium-234 flux, nitrate+nitrite, and photosynthetic pigments made at the US JGOFS …
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Monthly variability in upper ocean biogeochemistry due to mesoscale eddy activity in the Saragasso Sea
… 1995, combined with hydrography and satellite altimetry, was used to observe the impacts of nine eddy events on primary productivity and particle flux in the Sargasso Sea. Measurements of primary production, thorium-234 flux, nitrate+nitrite, and photosynthetic pigments made at the US JGOFS …
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ANALYSIS OF ENERGY USE AND CONSERVATION : TWO TRANSPORT-RELATED CASE STUDIES
… fuel consumption in actual traffic. The first study was carried out on two asphalt premix plants, a continuous drum mix plant and a batch processing plant. It consists of two phases, the energy billing audit and field audit of the two plans. The billing audit involves a time series study of the …
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Factors controlling bacterial abundance, biomass and growth at the Bermuda Atlantic time-series site
The Bermuda Atlantic Time-series Study (BATS) site represents a unique hydrographical oceanic environment to study the factors controlling bacterial growth dynamics. The region was sampled at monthly intervals from 1991 to 1996. A typical annual cycle was defined by a deep winter mixing, followed …
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Epidemiology and genetic risk factors of suicidal behaviour in South Africa
… treatment gap is large. The purpose of this study was to broaden our understanding of suicidal behaviour in South Africa by combining various data sources, each representing a unique perspective of the problem, to build on existing knowledge that may inform suicide prevention strategies in …