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 20 of 242 for “"Temporal changes"”.
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Temporal changes in marketing mix effectiveness
This research develops hypotheses to explain temporal changes in the effectiveness of marketing mix variables. Three potential explanations for these changes in market response are explored: (1) changes in market response associated with industry evolution, (2) trends in market response which may …
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Borders: visualizing temporal changes in border disputes
Disputes and changes of international borders have been an area of study for cartographers since long ago. Now, with online maps growing faster than printed maps, the task also transfers to online map creators. Companies like Google and Bing provide personalized maps where disputed international …
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Temporal Changes in Symptom-Behavior Dynamics: A Process-Focused Network Modeling Approach
… analyses. Finally, trends in group level network changes from baseline to post-intervention were identified.
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Patterns of temporal changes in species composition and diversity in island ecosystems
Patterns of spatial and temporal changes in biodiversity, natural or anthropogenic, and their importance in understanding the dynamics and restoration of natural ecosystems, have long been among the major questions in ecology. These changes are rather important to be understood in the early stages …
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Temporal changes in unisexual and sexual Ambystoma salamander populations in southeast Michigan
<p>Climate change drives changes in organisms’ geographic ranges that can lead to shifts in population structure. Unisexual (all female) <em>Ambystoma</em> salamanders reproduce via kleptogenesis, resulting in ploidy-variable offspring. I analyzed genetic data of historic and modern-day unisexual …
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Temporal changes in forest structure, composition, and carbon storage at Trelease Woods
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms
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Agricultural intensification, biological pest control and spatio-temporal changes in food web structure
Die Intensivierung der Landwirtschaft ist einer der Hauptauslöser von Verlusten in der Agrarbiodiversität und damit verbundenen Ökosystemfunktionen wie der biologischen Kontrolle. Sie beeinflusst dadurch indirekt auch die landwirtschaftliche Produktionsleistung. Durch die Intensivierung der …
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Investigations of temporal changes in climate and the geomagnetic field via high-resolution radiocarbon dating
… change has been suggested. In addition to changes in solar activity, geomagnetic field records also show prominent variations around 3000-2000 cal BP. In order to investigate the temporal development of past changes in climate and the geomagnetic field it is crucial to establish accurate …
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The role of temporal changes of the zonal wind on the excitation of large scale transients
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1989.
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Temporal Changes in the Levels of Gamma-Aminobutyric Acid in the Brain of the Cockroach, Leucophaea Maderae
Circadian rhythms have been shown to exist in all studied species and play an important role in their survival. The cockroach is an excellent model organism in which to study circadian systems because of the wealth of background information regarding both its anatomy and circadian system. Clock …
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Temporal Changes in the Spatial Distribution of Venture Capital Investment to Biotechnology Companies within the United States.
… objective of this research is to investigate temporal changes in the spatial distribution of venture capital investments to biotechnology companies within the United States. Data included venture capital to biotech investments from 1995 to 2005. Venture capital and biotech data from the Money …
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Using long-term data to investigate temporal changes in non-native crayfish populations of northern Wisconsin lakes
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-05-01
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Modelling spatio-temporal changes in the ecological niches of major domesticated crops in China: Application of Species Distribution Modelling
This thesis explores how the dispersal of crops in the past related to their ecological niches. In particular, it presents the niche models for five historically significant crops in China: rice, millet, wheat, barley and buckwheat. These models are rooted in the Species Distribution Modelling …
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Identifying metabolic indicators of phytoplankton and comparing the temporal changes in algal community composition in two Lake Ontario areas of concern
… tandem mass spectroscopy (LC-MS/MS) to identify changes in metabolites over time. The results from this study identified taurine, serine, and glycine in large amounts in both locations and that phytoplankton community composition is primarily affected by nitrates, total phosphorus, and turbidity. …
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Temporal Changes in Surface Water Availability: Patterns of Seasonal Shift on Water Stress in the Conterminous US Under a Changing Climate
… of the research analyzed projected population changes across the CONUS in conjunction with the seasonal climate region results to underscore those cities and regions most vulnerable to water stress due to increased population. It is critical that we address the needs of our communities as water …
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Temporal changes in the cardiometabolic disease risk profile of the Bellville south mixed-ancestry community between 2008/09 AND 2014/16
… there is a dearth of trend studies examining the changes in cardiometabolic risk factors and their behavioural, socio-demographic, and lifestyle determinants. This thesis aimed to determine the temporal changes between 2008/09 and 2014/16 in (1) absolute blood pressure levels and hypertension …
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An analysis of the spatial and temporal changes in the Riparian zone of the Berg River in the vicinity of Hermon: implications for governance
… zones in South Africa. The study identifies changes in vegetation composition and spatial extent of the riparian zone. The study site is a stretch of the Berg River in the Hermon area. Changes in vegetation and the spatial extent of the riparian zone over time were identified and mapped using …
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Moment-radius-stress drop relations and temporal changes in the regional stress from the analysis of small earthquakes in the Matsushiro region, southwest Honshu, Japan
Moment-radius-stress drop relations and composite focal mechanisms were determined for 33 small, shallow, strike slip earthquakes (1.7$MLS4.3) in the Matsushiro region of southwest Honshu, Japan during the period August 1971 through September 1974. Estimates of the scalar moment derived from …
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New insights into the differential rotation of the inner core
… examine the global and regional patterns of the temporal changes of the IC. We performed extensive analyses on the quality of the repeating earthquakes and quantified the error (σic) of travel time measurements from all possible sources except the IC temporal changes. We set 2σic as a threshold …
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