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Showing 1 to 20 of 44 for “"Hotelling"”.
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The Hotelling Valuation Principle: Does User Cost and Reserve Differentials Improve Validity?
<p>The Hotelling Valuation Principal (HVP) implies that the value per unit of an in-ground exhaustible natural resource is equal to the current price less the cost of production. The assumptions required for this principle include a certain and homogenous reserve stock, unconstrained extraction, …
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Computational Methods in Natural Resource Economics: Agent-Based Modeling and Hotelling's Rule
… a simple agent-based model against the basic Hotelling monopoly model and a few basic extensions. Hotelling's Rule identifes the expected behavior of a market for a nonrenewable resource. The statement is simple - marginal profit will increase at the prevailing rate of interest - but the …
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Solving Some Behrens-Fisher Problems Using Modified Bartlett Correction
… testing procedures such as the t-test, F-test, Hotelling T2-test, or the Lawley-Hotelling trace test may fail for these BF problems. In this thesis, we solve various BF problems by applying the modified Bartlett correction of Fujikoshi (2000). These BF problems include heterogenous one-way …
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Acceleration of convergence in solving the eigenvalue problem by matrix iteration using the power method
… using the power method, in conjunction with Hotelling deflation, for the solution of the problem K.x = ω².M.x is here proposed. The problem can be written in the form D.x =λ.x, and the modification consists of raising the matrix D to an appropriate power p before carrying out the iteration …
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TASK SPECIFIC EVALUATION METHODOLOGY FOR CLINICAL FULL FIELD DIGITAL MAMMOGRAPHY
… performance, we tested a system-model-based Hotelling observer (SMHO) model on a bench-top system using a uniform anthropomorphic phantom for an signal known exactly background known exactly (SKE/BKE) task. We then applied this concept on two clinical FFDM systems to compare their …
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Objective Assessment Methods for List Mode Imaging System
… Two commonly inspected observers are the Hotelling Observer and the ideal observer. The Hotelling observer is optimal among all linear observers in the sense of signal-to-noise ratio, while the performance of the ideal observer sets an upper bound for all other observers by employing the …
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Equivalence Tests For Repeated Measures
… developed equivalence tests include the omnibus Hotelling T2, the pairwise standardized test, the pairwise unstandardized test, and the two one-sided test for negligible trend. With Monte Carlo simulations, the current research evaluated Type I error rates and power rates for these equivalence …
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GLR Control Charts for Monitoring the Mean Vector or the Dispersion of a Multivariate Normal Process
… GLR chart is compared to the performance of the Hotelling Χ² chart, the multivariate exponentially weighted moving average (MEWMA) chart, and a multi-MEWMA combination. Results show that the Hotelling Χ² chart and the MEWMA chart are only effective for a small range of shift sizes in the mean …
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The psychological and social implications of patient motivation and satisfaction with orthgnathic surgery
… multivariate analysis of variance yielding a Hotelling T square statistic was used. A discriminate analysis of variance was used as a follow-up to the Hotelling T square to note those variables which caused the differences between the means.This study was conducted at a large military teaching …
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Open source software: Economic and social analysis
… adopt both one-dimensional and two-dimensional Hotelling models to analyze commercial software vendors' optimal pricing and product design when competing with the open source product. In the third study, we model the competition between two profit-oriented firms, and analyze the optimal strategy …
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On testing for a difference in two high-dimensional mean vectors.
… data dimension and, therefore, the traditional Hotelling's T2 test can be applied. In cases where the data dimension exceeds the sample-sizes sum minus two, the pooled sample covariance matrix is singular and, thus, nontraditional tests must be formulated. Using Monte Carlo simulations, we first …
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Comparing Dependent Correlations for Ordinal Data
… Clark's Z, Steriger's Z, Meng's Z, Hitter's Z, Hotelling's t, William's t and William's modified t per Hendrickson, for comparing dependent correlations are presented. The results via simulation studies indicate that the choice as to which test statistics is relatively optimal, in terms of …
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Fejezetek a gazdaságföldrajzból: horizontális termékdifferenciálás = Chapters from economic geography: horizontal differentiation
… alágából, az új gazdaságföldrajzból és a Hotelling típusú modellekből kerül bemutatásra öt egy-máshoz kapcsolódó tanulmány. Ennek megfelelően az értekezés egy makro– és illetve egy mik-roökonómiai részre osztható. Az első téma először ismertette Puga (1999) új gazdaságföldrajzi modelljének …
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Monitoramento de processos em bateladas através de cartas de controle multivariadas utilizando Análise de Componentes Principais Multidirecionais
… tradicionais, tais como as cartas de Hotelling, MCUSUM e MEWMA não são suficientemente robustas para tratar com um grande número de variáveis correlacionadas, pois foram concebidas para monitorar um número reduzido de variáveis de qualidade do produto final. Diante disso, ferramentas …
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Essays in Economic Epidemiology and Industrial Organisation
… characteristics. Using a standard two-good Hotelling model with endogenous product locations, I compare market equilibria for a monopolist under traditional selling and opaque selling. I find that when product locations are endogenous, opaque selling always earns the firm a higher profit and …
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Parámetros cuantitativos de la resonancia magnética cerebral en esclerosis múltiple y su correlación con la discapacidad
… el test correlación de Spearman y t de Student y Hotelling. Resultados: Se incluyeron 58 pacientes, encontrándose correlaciones estadísticamente significativas entre la escala de discapacidad extendida y volumen de parénquima cerebral, volumen de sustancia gris y volumen de lesiones hipointensas …
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A comparison of program goals emphasized in technology education among selected groups of professionals in the state of Virginia
… education teachers. The MANOVA, and ANOVA, and Hotelling paired T² tests were used to determine significant differences among the mean scores. Major conclusions reached as a result of the study were: 1. Professional leaders/teacher educators held different beliefs than did local supervisors and …
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Immigration, Quotas and Its Impact on Medical Education
For greater than a century higher education has provided the means for the immigrant class to enter the American mainstream. In no other field has this been more apparent than in the pursuit of a medical education to become a physician. This goal was most evident among the first and second …
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Attention-deficit/hyperactivity disorder (ADHD) profiles in children and adolescents from parent and teacher reports on the BASC
… (ages 12-18) with a diagnosis of ADHD. Hotelling's T² comparison of the study and BASC ADHD profiles yielded significant differences on the parent and teacher profiles and the BASC manual counterparts. The Adolescent profile was generated and cluster analysis indicated one-factor …
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A comparison of school climate in selected secondary schools
… overall school climate was tested using the Hotelling T2 statistic. Eight null hypotheses relating to each of the subfactors of the instrument were tested using a t-test statistic. All tests used the .05 level of significance. The null hypothesis for the overall school climate was rejected. …
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