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 7 of 7 for “"power transformation"”.
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Power Transformation Towards Linear or Partially Linear Quantile Regression Models
… this thesis, we consider a family of parametric power transformations for the dependent variable such that a linear or partially linear quantile regression model holds after transformation. The two models being considered are the power-transformed linear quantile regression model and …
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Essays on the Modelling of S&P 500 Volatility
… 2) to compare the performance of asymmetric power ARCH and EGARCH models; 3) to evaluate the forecasting performance of time-series and options-based variance swap valuation models. The observed market anomalies in the term-structure of implied volatility of S&P 500 futures options are …
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UMVU estimation of phase and group delay with small samples
… theory is circumvented by use of the Box-Cox power transformation on the observed sample phase function. Once transformed, it is assumed that the sample phase is approximately normally distributed and the relationship between phase and frequency is modelled by a simple linear regression model. …
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Water management for lowland rice irrigation
… selected for demonstration purposes. Different transformations were applied to Rf and EV data in an attempt to normalize these variates and to obtain a unique distribution to describe their variations. Statistical analysis of weekly EV arid RF showed that the power transformation was best able …
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Image compression and energy harvesting for energy constrained sensors
… into a single integrated circuit. Ultra-low power circuit techniques have reduced the power consumption of circuits. Moreover, solar cells with improved efficiency can be integrated on chip to harvest energy from sunlight. As a result of all the above, a new class of miniaturized electronic …
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An Empirical Comparison of Four Data Generating Procedures in Parametric and Nonparametric ANOVA
… to empirically investigate the Type I error and power rates of four data transformations that produce a variety of non-normal distributions. Specifically, the transformations investigated were (a) the g-and-h, (b) the generalized lambda distribution (GLD), (c) the power method, and (d) the Burr …
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Fractional Polynomial Response Surfaces and Tests for "Bumpature"
… Here, we study the use of simple power transformations of the response and the predictors as originally proposed by Box and Tidwell (1962). Using these transformed variables, four types of fractional polynomial models are considered: a first-order model, a first-order model with …