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 116 for “"Constancy"”.
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Whiteness Constancy: Inference or Insensitivity
Made available in DSpace on 2014-12-10T21:07:00Z (GMT). No. of bitstreams: 1 7114751.pdf: 2385510 bytes, checksum: 0d784c7071886029b4fff8a27b2ecb49 (MD5) Previous issue date: 1970
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Colour constancy: human mechanisms and machine algorithms
… investigation into instantaneous colour constancy in humans. Colour constancy may be defined as the ability of the visual system to maintain a constant colour percept of a surface despite varying conditions of illumination. Instantaneous, in this context, refers to effects which happen …
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Gender Constancy and Selective Imitation of Same-Sex Models
Made available in DSpace on 2014-12-12T19:55:51Z (GMT). No. of bitstreams: 1 7913648.pdf: 3815762 bytes, checksum: 1e8898224fce624b2a1f0c105332727b (MD5) Previous issue date: 1978
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Some nonparametric tests for constancy of regression relationships over time
Let Y₁, Y₂... be a sequence of random variables obeying the law Y<sub>i</sub> = β’<sub>i</sub> + ε<sub>i</sub>, where β₁, β₂, ... is a sequence of unknown k-dimensional regression vectors; x₁, x₂, ... is a sequence of known k-dimensional regressor vectors; and ε₁ , ε₂, ... is a sequence of …
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Tests for parameter constancy in dynamic and non-Gaussian models
In this dissertation various tests for parameter constancy in dynamic and non-Gaussian econometric models are studied. The emphasis of this dissertation is given to the moving-estimates (ME) and recursive-estimates (RE) tests because these two tests can be easily extended to models with …
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Testing for Constancy of Correlation in Autoregressive Conditional Heteroscedasticity (Arch) Models
"This thesis presents a test statistic for the constancy of correlation in the multivariate normal model. Following Chesher (1984) and Cox (1983), we focus on deriving a score test of the hypothesis that the variance of the parameter of interest is zero. Here the score test checks the local …
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Constancy and Changes in Petr Eben's Sacred Choral Works: An Overview
… is chant-derived. The conclusion evaluates the constancy and changes of Eben's compositional practices and assesses the degree to which his style changed over time.
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A Multiple Discriminant Analysis Approach to the Development of Form Constancy
Made available in DSpace on 2014-12-08T23:02:09Z (GMT). No. of bitstreams: 1 7013371.pdf: 3051346 bytes, checksum: cc3bf7efda3ffdb328d681f6894f6b4f (MD5) Previous issue date: 1969
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Children's Use of Race in Drawing Inferences Based on Their Understanding of Race Constancy
Children’s understanding of race constancy and their subsequent use of race as a means of drawing inductive inferences were investigated. Race constancy was determined by children’s tendency to say that people could change category membership by changing their outside appearance. A second phase of …
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Bayesian approaches to bilinear inverse problems involving spatial evidence : color constancy and blind image deconvolution
… problems in low-level computer vision: color constancy and blind-image deconvolution. The goal of the former is to separate the effect of global illumination from other properties of an observed image, in order to reproduce the effect of observing a scene under purely white light. For the …
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Test of Light Speed Constancy With Light Age Using an Active Fiber-Based Mach-Zehnder Interferometer
This thesis investigates the constancy of light speed with respect to the light age using an active fiber-based Mach-Zehnder interferometer (MZI) illuminated by sunlight. The original sunlight in one arm, which has the age of 8.3 minutes since it was emitted from the sun, interferes with the young …
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The Effects of Stimuli Type, Size, and Articulation on Estimating the Luminance Contrast of Real and CRT Targets
… research, it was expected that lightness constancy would increase as stimuli moved from a spotlight, to paper, and finally to a CRT monitor. Lightness constancy was also expected to increase with articulation, and to vary as stimuli sized increased or decreased. Two separate experiments …
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Efekt zkušeností a květních vlastností na projev preferencí a věrnosti u Eristalis tenax
… (individual floral traits) are preferences and constancy of pollinators. The proportion of intraspecific pollen transfer increases with higher preferences or constancy of the pollinator. Pollinator preferences and constancy tend to change over its lifetime based on experience with the flowers …
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Perception of Lighting and Reflectance in Real and Synthetic Stimuli
… in a scene, a phenomenon known as lightness constancy. Classically, lightness constancy has been explained as a 'discounting' of the lighting intensity (Helmholtz, 1866), and this continues to be a common view today (e.g., Brainard & Maloney, 2011). However, Logvinenko and Maloney (2006) have …
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An Attentional Theory of Continuity Editing
… psychologists refer to as existence constancy (Michotte, 1955): “the experience that objects persist through space and time despite the fact that their presence in the visual field may be discontinuous” (Butterworth, 1991). The main conclusion of this thesis is that continuity editing …
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Modeling evolution of protein coding DNA sequences
… for testing the hypothesis of synonymous rate constancy, and enable a host of data exploration and analysis tools. For several indicative data sets, the constancy assumption is shown to be violated, and some possible explanations are given. We also present an algorithm for improving efficiency …
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The time-course of colour vision
… we measure the degree to which colour constancy is achieved as a function of time in a simulated stimulus environment in which the illuminant changes periodically. We find that perfect constancy is not achieved instantaneously after an illuminant chromaticity shift and that constancy of …
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An Empirical Test of the Real Interest Rate in Germany, 1970-2000
This thesis is a empirical test of the constancy of the real rate of interest in Germany over the period of 1970 to 2000. The methodology, based on Mishkin (1981), employs Ordinary Least Squares regressions to search for correlation in movements of real rates with lagged inflation, time trends, and …
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