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 115 for “"geometric mean"”.
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A family of curves for the geometric mean distance of one rectangle from another
Thesis: B.S., Massachusetts Institute of Technology, Department of Electrical Engineering, 1944
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Non commutative version of arithmetic geometric mean inequality and crossed product of ternary ring of operators
… the non commutative version of the Arithmetic Geometric Mean (AGM) inequality (this is a joint work with Mingyue Zhao and Maruis Junge). We start Chapter 2 by giving some background about the partition and M{\""o}bius function. We then prove the two main theorems: The AGM inequality for the …
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The relation of bed depth, particle density, and particle size to the local coefficients of heat transfer of internally-heated fluidized beds of solids
… were aerocat cracking catalyst, having a geometric-mean particle diameter of 0.00262 inch and an absolute density of 136.6 pounds per cubic foot; tabular alumina, having a geometric-mean particle diameter of 0.0138 inch and an absolute density of 238.8 pounds per cubic foot; silica gel, …
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Experimental Evolution with Escherichia coli in Diverse Resource Environments: are 'Jacks of all Trades' truly 'Masters' of None?
… the first 4,000 generations; specifically, the geometric mean fitness of most generalist populations in both single-resource environments was not significantly different from the geometric mean fitness of the specialist populations measured in their selective environments. Subsequently, however, …
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Microbial risk assessment for recreational use of the Kallang Basin, Singapore
… of illness, and establish guideline geometric mean concentrations. Samples were collected at four different locations along the Kallang Basin every four hours during a 48-hour period. Samples were then analyzed for Enterococci and E. coli using most-probable-number methods. Adenovirus …
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The Applicability and Use of Waterless Hand Sanitizer in Veterinary and Animal Agricultural Settings
… from less than to 20 to 48,800 CFU/ml with a geometric mean of 6,926 CFU/ml. Counts after WHS use ranged from less than 20 to 23,400 with a geometric mean of 1,152 CFU/ml. Differences in before and after ranged from -4,000 to 48,200 CFU/ml with a median of 9,700 CFU/ml. The logarithmic …
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Personal exposure of children to formaldehyde in Perth, Western Australia
… range of personal exposure concentrations, with geometric mean concentrations of 9.7ppb at Duncraig and 11.5ppb at Calista. Indoor geometric mean concentrations at Duncraig were l0.lppb, with outdoor and classroom concentrations below the analytical limit of detection (4ppb). At Calista, mean …
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Untersuchungen zur Reaktion des Immunsystems von Kindern auf Kfz- und Flugverkehr im deutsch-niederländischen Grenzraum
… In the area of Geilenkirchen the adjusted geometric mean of IgG was significantly lower than in the reference region. In Schinveld the adjusted geometric mean of IgA was significantly higher than in the reference area. Concerning the parameters IgG, IgE, C3 and C4 no significant effects of …
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Prefetching for complex memory access patterns
… bring data into the cache early, achieving 1.3x geometric mean speedup on the most complex processors, and 2.7x on the simplest. I also provide an analysis of when and why this is likely to be successful, which data structures to target, and how to schedule software prefetches well. Then I …
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A thermodynamic simulation model for storage of corn
… equivalent-resistor, modified Maxwell, and geometric mean). Five phase conversion factors(0.0, 0.25, 0.50, 0.75, and 1.0) were utilized to evaluate the five mixing models. Three laboratory storage bins, and eight grain sample columns were designed and constructed. Three experiments were …
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Magic formula optimisation in the South African Market
… period and portfolio size which: maximise the geometric mean return, minimise the volatility of returns and maximise the risk adjusted return, shall be determined. The scope of this study includes all companies, excluding financial services entities, listed on the Johannesburg Stock Exchange, …
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Microbial risk assessment for recreational use of the Kranji Reservoir, Singapore
… a most probable number method. The measured geometric mean concentrations found during the field campaign were 13.3 Enterococci colony forming units (CFU) per 100 ml water and 1400 Enterococci CFU per gram sediment. Based on the strengths and weaknesses of available statistics-based risk …
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Allergen-induced change in airway responsiveness to direct and indirect stimuli in mild atopic asthmatics
… airway inflammation. In the 3-hour study, the geometric mean MCh PC20 decreased significantly after allergen exposure from 0.88 mg/ml to 0.50 mg/ml (p = 0.02) indicating airway responsiveness to MCh increased. Conversely, the geometric mean mannitol PD15 increased significantly from 174 mg to …
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Evaluating factors that affect copper tasting sensitivity in drinking water
… pH and mineral water with disinfectant added. Geometric mean copper taste thresholds were 0.48 mg Cu/l and 0.41mg Cu/l in distilled and mineral water pH 7.4 respectively. Logistic regression copper taste thresholds were 1.50 mg Cu/l and 1.96 mg Cu/l in distilled and mineral water pH 7.4 …
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Climatic signals and frequencies in the Swedish Time Scale, River Ångermanälven, Central Sweden
… internal thickness variation. A 2000 year long geometric mean varve thickness series was calculated to account for the internal thickness variation, which is postulated to form a proxy for fluvial sediment transport. Geometric mean varve thickness was compared to observed maximum daily annual …
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Groundwater transport of Escherichia coli bacteria to open surface waters on Virginia's Coastal Plain: a GIS approach
… low tide and high tide were analyzed which had geometric mean bacteria MPN concentrations of 16.1 fecal coliforms (FC) / 100 mL, 9.4 FC / 100 mL, and 6.9 FC / 100 mL respectively compared to an overall geometric mean of 7.8 FC / 100 mL. Of the factors analyzed, rain events and tidal elevation …
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Global 0ptimization of pairwise comparisons matrix based on differential evolution algorithm
… The optimization results are fairly good with geometric mean (GM) and eigenvector (EV). The thesis provides an introduction of differential evolution and how to apply it to the global optimization of PC matrices. IDEs and Java/R packages used in the Monte Carlo experiment will be discussed. …
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In Vitro Evaluation of the Biolase ER,CR:YSGG Side-Firing Tip For Bacterial Biofilm Reduction and Smear Layer Removal in Root-End Cavity Preparation
… the highest bacterial burden, with a geometric mean of 198,898 CFU/mL. The laser-treated group showed a significantly lower geometric mean of 53,393 CFU/mL, representing a 3.7-fold reduction compared with the negative control group (p = 0.009). No statistically significant difference …
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Development of a new integrated sustainability assessment model for energy systems
… varies between 0.55 and 0.58 using the weighted geometric mean. On the other hand, the sustainability index of the solar photovoltaic system varies between 0.56 and 0.59 using the same method.
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Software and Hardware Support for Data Intensive Computing
… 18 over a commodity microprocessor, and with a geometric mean of 5.8.
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