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 12 of 12 for “"gamma function"”.
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Homeowner perception and response to radon
… testing for association through the use of the gamma function. Statistically significant findings included: 1) objective risk does have an impact of hazard response; and 2) a correlation was found between how worried consumers were about their radon problem and their response to the hazard.
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Effect of temperature on tunneling and quantum efficiency in cigs solar cells
… is investigated. The tunneling current density function is derived by a series representation of the incomplete gamma function with non-parabolic effect and its variation at low temperature is also investigated. When the Fermi level of holes is in excess of that of electrons, i.e., …
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Assessing fall velocity-maximum dimension relationships and particle size distributions for snowfall
… size distributions, several distribution functions were fit to the observed distribution using a least-squares regression method in MATLAB. It was found that, overall, the triple Gaussian distribution function performed the best in modeling particle size distributions in snow, but there …
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Cone Beam Optical Computed Tomography-Based Gel Dosimetry
… and 3 mm spatial distance-to-agreement gamma function comparison criteria. Small field dose delivery evaluations are demonstrated to be viable using an optically scattering N-isopropylacrylamide (NIPAM)-based polymer gel, with the same comparison criteria. Full treatment process quality …
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Modeling the impact of gypsy moth defoliation in individual tree mortality and basal area growth of northern hardwoods of central Pennsylvania
… years of defoliation measures. A beta and gamma function were used to model individual· tree basal area growth for the same 15 species. The models were fit using nonlinear least squares. Variables used include the relative basal area index, stand basal area, site index and a defoliation …
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Green's Functions of Discrete Fractional Calculus Boundary Value Problems and an Application of Discrete Fractional Calculus to a Pharmacokinetic Model
… purpose of this thesis is to calculate Green's functions of fractional difference equations, and to model problems in pharmacokinetics. We claim that the discrete fractional calculus yields the best prediction performance compared to the continuous fractional calculus in the application of a …
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Intelligent algorithms applied to weather radar based flood forecasting system
… manner, the key model utilised is the Transfer Function model. Potential misinterpretation of the TF model was explained by distinguishing between the "Black Box" model and the "White Box" model. The physically based Genetic Cascade Transfer Function (GCTF) model was introduced and shown to be …
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Regulation of oligodendrocyte lineage cell function by the RXR$\gamma$ nuclear receptor
… is compromised. The nuclear receptor RXR$\gamma$ is an important positive regulator of OPC differentiation and an accelerator of endogenous remyelination in aged rats. RXR$\gamma$ functions as a ligand-induced transcription factor and is able to regulate gene transcription. It does so by …
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The Role of Turbulence on the Initiation of Sediment Motion
… direction. It is shown here that a two-parameter gamma density function describes quite well the statistical behavior of this variable. The results that are obtained from the existing model suggest that the present methodology can adequately describe the commencement of sediment motion. It is …
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Hypergeometric functions, continued fractions for products of gamma functions, and q-analogues
… identities are those involving ratios of Gamma functions in Chapter 12 of his second notebook. This thesis develops a method for deriving such identities, using hypergeometric functions as the main tool. We begin by deriving a continued fraction identity, use it to prove Ramanujan's Entry …
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Assessing the dependence of bulk ice properties from probes with anti-shatter tips on environmental conditions
… how ice crystal properties vary as a function of environmental conditions. Furthermore, many of these assumptions are derived from historical datasets collected by in situ probes, namely optical array probes that can be contaminated by shattered artifacts generated by large particles …