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 29 for “"Quadratic function"”.
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Uso do Geogebra no Ensino das Funções Quadráticas: Uma proposta para sala de aula.
… as a education tool in learning and teaching quadratic function. Nowadays is certain to say that the use of new technologies, as a education tool, it is a necessary demand. But, in school practice, we observe that the applicability of these new technologies, in mathematics teaching, it is …
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Response Surface Modelling of Monte-Carlo Fire Data
… each output parameter by a nonlinear function of the input parameters. Usually, a quadratic function of the input parameters turns out to be sufficient. Fitting of the response surface is carried out by regression. However, if the range of the input parameters is comparatively large, …
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Hybrid force and position control of a manipulator with an elastic link
… techniques, the proposed controller minimizes a quadratic function of contact force error, tip tracking error, elastic deflection, and control torques. Applying the proposed controller to a two-link planar manipulator where the first link is rigid and the second elastic, computer simulation and …
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Studies of Environmental Stress Cracking of High Density Polyethylene Liner in Alkaline Surfactant Polymer Enhanced Oil Recovery Floods
… water permeating rate. It was found that WVT is quadratic function of ambient temperature and power function of film thickness. As a result of combination of three parameters, it can be found that ambient temperature is quadratic function to WVT and thickness is quadratic coefficient of …
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Cutting Planes for Convex Objective Nonconvex Optimization
… the epigraph of a convex and differentiable function over a general domain. In the special case where the objective is a positive definite quadratic function, polynomial time separation procedures using the new class of lifted inequalities are developed for the cases when the domain is the …
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Multivariate Identification and Stochastic Control of A Pilot Plant Packed Bed Reactor
… are highly exothermic. A multivariate transfer function model for process and a time series model for the disturbances are constructed through an iterative procedure of process identification, parameter estimation and diagnostic checking. Using exit concentrations inferred from reactor bed …
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Multichannel blind deconvolution in underwater acoustic channels
… outputs and solved the problem by minimizing a quadratic function over a non-convex set. We demonstrated the efficiency and robustness of both multichannel blind deconvolution methods on realistic acoustic channels in ocean waveguides and experimentally validated the methods using at-sea data. …
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Sparse equalizer filter design for multi-path channels
… Next the equalization MSE is formulated as a quadratic function of the equalizer coefficients. Both the Linear Equalizer (LE) and the Decision Feedback Equalizer (DFE) are analyzed. Utilizing the quadratic form, designing a sparse equalizer under a single MSE constraint becomes an 10-norm …
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Analytic Parameterization of Stabilizing Controllers for the Moore-Greitzer Compressor Model
… for systems with nonlinearities satisfying quadratic constraints (QC). Our method was motivated by the challenges of output feedback control design for the three-state Moore-Greitzer (MG) compressor model. The classical three-state MG model is a nonlinear dynamical system that is widely used …
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Land Surface Phenologies and Seasonalities Using Cool Earthlight in Temperate and Tropical Croplands
… to environmental forcings, I used the convex quadratic (CxQ) model fit that has been successfully applied with the VNIR and TIR data to herbaceous vegetation in temperate and boreal ecoregions. Land surface dynamics in the thermally-limited temperate croplands were characterized as a function …
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Finite Deformations of Fiber-Reinforced Rubberlike Solids, and of Adhesively Bonded T-peel Joints
… isotropy, we express the stored energy function, W, in terms of the five invariants of the right Cauchy-Green strain tensor and the fiber direction, and account for different response in tension and compression along the fiber direction. It has been shown in the literature that in …
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Statistical Inference for Stochastic Differential Equations using Splitting Schemes
… frameworks by incorporating linear drift and a quadratic function in the diffusion structure. The Strang splitting scheme for nonlinear processes with Pearson-type noise is proposed, and the closed-form solutions for the first two moments are derived. The applicability of these models is …
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Towards the management of Ustilago kamerunensis H Sydow and Sydow, a smut pathogen of napier grass (Pennisetum purpureum Schum.) in Kenya
… into the model but only altitude, using a quadratic function, was significant. Napier grass at altitudes between 1800 and 2000masl is particularly at risk from the disease. This was the first smut disease correlative model to make use of environmental factors. The presence of the fungus was …
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Experimental Investigations of the Onset of Sand Deposits on Hastelloy-X between 1000 C and 1100 C
… an equation for predicting deposition as a function of gas path temperature and impact angle. The sand and air mixture maintained a constant flow velocity of approximately 70 m/s, impact angle was varied from 30° to 90°, and the gas path temperature was varied from 1000 °C to 1100 °C. The …
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Greed, hedging, and acceleration in convex optimization
… problem of minimizing a strongly convex, smooth function with first-order information. The first main message of the thesis is that, surprisingly, algorithms which are individually suboptimal can be combined to achieve accelerated convergence rates. This phenomenon can be intuively understood as …
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A first-order method for the extremization of constrained and unconstrained functions
The problem of extremizing a function f(xl subject to the constraint cc(x) = 0 is considered. Here, f is a scalar, x an n-vector, and cp a q-vector, where 0 < q < n. This problem is transformed into that of minimizing the unconstrained function R(x, X), where x and X are regarded as independent …
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An updating rule for the penalty constant used in the penalty function method for mathematical programming problems
This thesis considers the problem of minimizing a function f(x) subject to a constraint cp(x) = 0, where f is a scalar quantity, x an n-vector, and cp a q-vector, with q being less than n. The penalty function method is investigated; that is, the vector x is viewed as unconstrained, and the …
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Multivariate nichemetrics
… related to the value of the measure and is a quadratic function of the similarity. The logarithmic transformation of the similarity is seen to linearize the variance of the similarity estimate. The jackknife method gives good adjustment of the bias of the estimated measures. Generally, the …
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Estimation of circadian parameters and investigation in cyanobacteria via semiparametric varying coefficient periodic models
… Biol- ogists believe that the amplitude function of the periodic component is proportional to the baseline function. To verify this belief, we propose a full model without any assumptions regarding such a relationship, and two reduced models with the ratio of baseline and amplitude to be …
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Development and Bioavailability/Bioequivalence of a Fixed-Dose Combination Antiretroviral Reconstitutable Suspension Intended for Pediatrics
… analysis showed that the viscosity was a quadratic function of the concentration of Avicel RC 591. An assessment of the stability of the granules for reconstitution under International Conference on Harmonization stability conditions at 40 oC/75 %RH and 30 oC/65 %RH indicated the granule …
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