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 33 for “"local variation"”.
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Local variation in static stability.
Massachusetts Institute of Technology. Dept. of Meteorology. Thesis. 1966. M.S.
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Local variation and regional transport of tropospheric ozone over Cape Town
… its precursors. Previous studies have identified local emission sources and meteorological conditions associated with both the air pollution and the brown haze in Cape Town. However, due to the transport of air pollutants, emissions from remote sources may also contribute to air pollution levels …
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Correlating with Local Variation in Collagen Level and Mechanical Properties of the Heart Tissues
… effectively used for studying the effects of the variation in the tissue's composition, primarily collagen, on the myocardium behavior. Based on the obtained results, it was demonstrated that mechanical properties enhanced with increasing the collagen amount. The results indicated that the …
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Local Variation in the Chemical Defence of European Pine Sawfly (Neodiprion sertifer): Effects of Host Tree Chemistry and Social Environment
Chemical defences are diverse in nature, and this variation can be adaptive or non-adaptive (i.e., environmental noise). Identifying the sources for this variation helps to understand ecosystem interactions and, to make more accurate predictions of species distributions and local abundances. The …
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Modeling ion mobility in solid-state polymer electrolytes
… effect on diffusion. Polymer disorder creates local variation in behavior, which we call "trapping" (low diffusion) and "free diffusing" (high diffusion) regions. Changing ion-polymer attraction modulates the relative importance of trapping and free diffusing behavior. Using this model, we can …
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Estrutura da variação craniana em populações de Bolomys lasiurus (Lund, 1841) (Rodentia: Cricetidae) do Nordeste do Brasil
… possible effects of sex, vegetation, season and local variation among samples of 31 sites on craniodental estimators of rela tive age and to improve age determination for quantitative analyses. Non-geographic (age and sexual) variation in 30 cranial measurements is analysed and possible …
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STM studies of the nanoscale electronic landscape of the cuprates
… many other theories. The second study examines local properties of checkerboard order and of quasiparticle interference patterns in Bi-2201 and the related superconductor Bi 2Sr 2CaCu2Os+x (Bi- 2212). Both of these phenomena are tied to the doping of the material via the configuration of the …
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CHARACTERIZATION OF VARYING LOCAL WINTER STREAM HABITAT AND ITS IMPACT ON COLDWATER FISHES
… area were chosen to minimize latitudinal climate variation. Many in-stream winter conditions are driven by temperature so the importance of understanding how changing localized climate patterns may affect the structure and condition of fish communities is of paramount importance to predicting the …
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Local imaging of magnetic flux in superconducting thin films
Local studies of magnetic flux line (vortex) distribution in superconducting thin films and their pinning by natural and artificial defects have been performed using low-temperature magnetic force microscopy (LT-MFM). Taken a 100 nm thin NbN film as an example, the depinning of vortices from …
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Maternity Leave Policy in U.S. Police Departments and School Districts: The impact of descriptive and social group representation in a context of gendered institutions
… a quantitative study is conducted that examines local variation in policy formulation. Employee leave due to maternity is primarily a women's issue and its treatment will vary depending on the socio-political context that the policy dictating the leave is found in. Three main determinants of a …
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Patterns in forest soil microbial community composition across a range of regional climates in Western Canada
… across a spectrum of spatial scales, and variation in soil microbial composition has been associated with a number of environmental gradients. This study investigates the structure and function of soil microbial communities under mature, undisturbed forested sites across a range of …
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Late Pleistocene and Early Holocene Small Mammals in South West Britain: Environmental and Taphonomic Implications, and their role in Archaeological Research
… selection. Reconstructions of the environment local to each cave at the time of deposition are offered. <br/><br/>The evidence provided by the small mammals is related to the archaeological findings from each cave, to demonstrate the effect of human habitation of cave sites on the depositional …
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Spatial structuring in trait variation in Polyommatus icarus in a functional context
… with marked within and between population variation in morphology, thermal biology, and voltinism. These traits together with allozymes and a neutral DNA marker (AFLP) variation are studied here to understand how geographic trait variation is related to environmental variation. The approach …
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Spatio-temporal dynamics before population collapse
… than that observed in isolated populations, as local variation is reduced by dispersal. Furthermore, we propose a generic indicator based on deterministic spatial patterns, recovery length. In our experiments, recovery length increased substantially before population collapse, suggesting that …
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Sapling growth and recruitment as affected by flooding and canopy gap formation in a river floodplain forest in southeast Texas
… history using a combination of river gauging, a local water-level recorder, and contour maps. 1979 was an extreme flood year for this site, as was 1989. Reduction in flooding frequency since dam construction in 1965 was significant for all elevations, while reduction in flooding duration was …
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Low-voltage embedded biomedical processor design
… demands. However, increased sensitivity to variation at low voltages must be mitigated in logic and SRAM design. For logic circuits, a design flow and a hold time verification methodology addressing local variation are proposed and demonstrated in a 65nm microcontroller functioning at 0.3V. …
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Arabic-speakers in Norman Sicily
… fragmented and characterised by a good deal of local variation. To illustrate this, the thesis traces the distribution and shifting margins of the Arabic-speaking communities and the effects that social change and religious conversion had on these groups. These findings are integrated with …
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Genetic diversity of African isolates of Toxoplasma gondii
… research is to analyse thelevel of genetic variation among local African T. gondii isolates in relation to theirphenotype (genotype phenotype relationships). In this study, multi-locus nested PCRsequence analysis of seven Ugandan T. gondii isolates was applied using nine differentgenetic …
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Short-Term Study Abroad And Dialect Acquisition: An Analysis Of The Acquisition Of The Ustedes-Vosotros Verbal Mixing By Study Abroad L2 Learners Of Spanish
… Andalucía, there exists a phenomenon in which local speakers of Spanish mix the pronoun ustedes with the verbal conjugation of the second person plural pronoun, vosotros. The study seeks to answer two key questions. First, do residents of Cádiz demonstrate acceptance of this linguistic …
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Topsoil thickness impact on corn, soybean, and switchgrass productivity and soil nutrient management
… (Panicum virgatum L.), and accounting for local variation in nutrient requirements could improve overall productivity, and ultimately profitability in the region. Therefore, studies were conducted on a Missouri claypan soil to: i) compare the productivity of switchgrass grown for bioenergy …
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