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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
121

The Doctrine of Due Measure in Plato's Statesman

Cochran, William 25 August 2011 (has links)
This thesis examines the extent to which the doctrine of due measure can be rightfully called the skopos of Plato’s Statesman. In order to determine the doctrine’s explanatory power, the thesis adopts the Neoplatonic method of exegesis. It first examines the current state of Platonic scholarship in general and then of studies on the Statesman in particular, then provides both the philosophic and literary context of the dialogue in question. Next, it analyses the doctrine of due measure’s philosophic content, and then proceeds to examine its ability to illuminate the literary details of the text. In completing this exercise, this thesis hopes to demonstrate a method of interpreting a Platonic text, by which we can better understand how Plato wrote his dialogues, and how we can be better interpreters of his writing—both in its philosophical and literary aspects.
122

Groups of measurable and measure preserving transformations

Eigen, Stanley J. January 1982 (has links)
In chapters I and II, we show that the group G of invertible, non-singular transformations of a Lebesgue space is perfect, simple, and has no outer automorphisms. Some related results are obtained for the subgroup of measure preserving transformations and for the full group of an ergodic transformation. Further results are given with the underlying Lebesgue space replaced by a homogeneous measure algebra. It is also shown, in chapter III, that ergodic transformations are algebraically distinguishable from non-ergodics. Chapter IV introduces the notion of a fibered ergodic transformation. A fibered analogue of Dye's theorem is proved. In chapter V the family of transformations satisfying Dye's theorem for two fixed ergodics is shown to be dense in the coarse topology. Finally, in chapter VI, the concept of a triangle set in the unit square is introduced. Using this notion, a sufficiency condition for the ergodicity of T x S is obtained.
123

Development of the Ball neuropsychological screening measure

Brooks, David A. January 1989 (has links)
The present research concerned the validation of a neuropsychological screening measure. In a series of investigations the reliability, predictive validity and factor structure of the Ball Neuropsychological Screening Measure (BNSM) were examined.Such procedures were considered essential to investigate the utility of the BNSM.In a two part study, the reliability of the BNSM was investigated (Study 1). First, an attempt was made to determine BNSM test-retest reliability with the finding that subtest means on test and retest were too similar to permit interpretation. In the second portion of Study 1 the internal consistency of the BNSM was examined by computing Cronbach's alphas. The BNSM was found to have high internal consistency, producing an overall alpha coefficient of .951.A discriminant analysis was performed in study 2 to examine the utility of the BNSM in discriminating between normal and impaired adults.The BNSM was found to be highly accurate in this regard, achieving an overall correct placement prediction rate of 96%. Study 3 looked at the utility of the BNSM in correctly predicting lateralization of brain Impairment.The BNSM successfully predicted placement into three groups (Normals, Right-Hemispheric Impairment, LeftHemispheric Impairment) with 95% overall accuracy. Finally, the factor structure of the BNSM was examined in Study 4. Utilizing a varimax rotation, a two factor solution was found to account for 66.8% of the total variance. / Department of Educational Psychology
124

Identification of Push-to-Talk Transmitters Using Wavelets

Payal, Yalçin 12 1900 (has links)
The views expressed in this thesis are those of the author and do not reflect the official policy or position of the Department of Defense or the U.S. Government. / The main objective of this study is to find a wavelet-based, feature extracting algorithm for push-to-talk transmitter identification. A distance-measure algorithm is introduced to classify signals belonging to one of four transmitters. The signals are first preprocessed to put them into a form suitable for wavelet analysis. The preprocessing scheme includes taking the envelopes and differentials. Median filtering is also applied to the outputs of the wavelet transform. The distance algorithm uses local extrema of the wavelet coefficients, and computes the distance between the local extrema of a template and the processed signals. A small distance implies high similarity . A signal from each transmitter is selected as a template. A small distance measure indicates that the signal belongs to the transmitter from which the template originated. The distance algorithm can classify correctly the four different signal sets provided for the research. Even at lower signal-to-noise levels, good identification is achieved.
125

Checklist of offence pathways for rapists: a clinician's guide to informed intervention

Hussain, Qusai Unknown Date (has links) (PDF)
The violent sexual assault of women and the rehabilitation of its perpetrators is an area of crime that has been scarcely researched. The problem of sexual aggression is multi-dimensional and accordingly a comprehensive assessment needs to address a wide range of psychological vulnerabilities and offence process characteristics to enhance treatment customisation. The purpose of this study was to create a clinician rated measure for the treatment classification of rapists – Checklist of Offence Pathways – Rapist Version - and to assess the measure’s reliability and validity. The 15-item measure was created using the framework of the pathways model (Ward & Hudson, 1998; Ward, Hudson, & Keenan, 1998). The measure was divided into two subscales measuring approach vs. avoidant goals and active vs. passive strategies. Both subscales demonstrated significant interrater reliability (r = .53 and r = .46, respectively) as well as internal consistency (a = .50 and a = .60, respectively). The majority (80%) of the inter-item correlations were uncorrelated or weak indicating that the test items were measuring separate constructs. Validity analysis indicated that a number of test items displayed convergent and discriminant validity with established psychometric scales. Overall these results suggest that this measure provides a useful framework for understanding sexual aggression and selecting treatment strategies for rapists, while avoiding some of the pitfalls associated with dissimulation in self-report measures.
126

Physical activity in New Zealand preschoolers: amount, associations, and accounts

Oliver, Melody January 2008 (has links)
Improving physical activity (PA) participation is a public health priority in developed and developing countries to curb the substantial and growing prevalence of lifestyle-related diseases. Early childhood may be an especially important time to encourage PA; however, there is a paucity of research in this area. The aim of this research was to contribute to the limited body of work in PA in early childhood by investigating PA measurement approaches in young children and applying this knowledge to determine socio-environmental associations of preschool PA. An initial literature review provided the background for the thesis and determined the approaches taken in the ensuing chapters. A second literature review provided a detailed critique of research specific to PA measurement in early childhood to further inform the empirical studies. Information for the empirical chapters was drawn from three research projects: two studies were completed that assessed tools for objectively measuring PA in young children (pedometers and accelerometers), and these studies informed a final project to quantify associates of PA in a sample of preschool-aged children. Novel and important findings from the preliminary studies were that pedometer accuracy for measuring free-living PA and walking in children aged 3-5 years was poor, especially for pedometers worn at the back of the child, or during slow walking. Furthermore, when investigating the utility of accelerometers (more complex and frequently adopted tools) to quantify PA intensity in preschoolers, their application and use of commonly employed thresholds resulted in systematic underestimation of PA intensity and poor agreement (=0.09) when compared with a direct observation criterion measure. Application of existing accelerometer thresholds to classify PA intensity in preschoolers was therefore likely to yield biased estimates. Given the dearth of robust alternatives, a novel approach was developed to calculate individual activity rates from the raw accelerometer data. To account for over-dispersion in accelerometer counts, daily average activity rates per second were derived for each participant using negative binomial generalised estimating equation (GEE) models with a first-order autoregressive (AR1) correlation structure. These rates were assumed to be exchangeable between days and normally distributed. Potential socio-environmental associates of children’s activity rates and body size were thus assessed using normal GEE models with exchangeable correlation structures. Parental PA and child age were independently and significantly associated with child activity rates (P≤0.04). No relationships between child body size and PA or television (TV) exposure were found. Common approaches to PA measurement and data consideration were challenged in this research and novel robust methods devised utilising contemporary statistical methods. Accelerometer data can be successfully reduced to individual activity rates to mitigate current issues related to objective PA quantification with preschoolers. Parental involvement in preschool PA interventions is worthy of further investigation, and younger children may stand to benefit more from increased activity. Further exploration of the complex interactions between PA, exposure to media, and health outcomes in preschool-aged children is warranted.
127

Large deviation principles for random measures /

Hwang, Dae-sik. January 1991 (has links)
Thesis (Ph. D.)--Oregon State University, 1991. / Typescript (photocopy). Includes bibliographical references (leaves 71-73). Also available on the World Wide Web.
128

Statistical disclosure control for frequency tables

Antal, Laszlo January 2016 (has links)
Disclosure risk assessment of statistical data, such as frequency tables, is a prerequisite for data dissemination. This thesis investigates the problem of disclosure risk assessment of frequency tables from the perspective of a statistical institute. In the research reported here, disclosure risk is measured by a mathematical function designed for the data according to a disclosure risk scenario. Such functions are called disclosure risk measures. A disclosure risk measure is defined for frequency tables based on the entire population using information theory. If the disclosure risk of a population based frequency table is high, a statistical institute will apply a statistical disclosure control (SDC) method possibly perturbing the table. It is known that the application of any SDC method lowers the disclosure risk. However, measuring the disclosure risk of the perturbed frequency table is a difficult problem. The disclosure risk measure proposed in the first paper of the thesis is also extended to assess the disclosure risk of perturbed frequency tables. SDC methods can be applied to either the microdata from which the frequency table is generated or directly to the frequency table. The two classes of methods are called pre- and post-tabular methods accordingly. It is shown that the two classes are closely related and that the proposed disclosure risk measure can account for both methods. In the second paper, the disclosure risk measure is extended to assess the disclosure risk of sample based frequency tables. Probabilistic models are used to estimate the population frequencies from sample frequencies which can then be used in the proposed disclosure risk measures. In the final paper of the thesis, we investigate an application of building a flexible table generator where disclosure risk and data utility measures must be calculated on-the-fly. We show that the proposed disclosure risk measure and a related information loss measure are adaptable to these settings. An example implementation of the disclosure risk and data utility assessment using the proposed disclosure risk measure is given.
129

Mesure embarquée large bande de l’impédance électrique : application aux batteries / Embedded broadband measurement of electrical impedance : application to battery

Piret, Hélène 17 November 2016 (has links)
De plus en plus d’applications reposent sur l’utilisation des batteries, que cela soit dans le domaine des transports, du smart grid ou des objets connectés. Par conséquent, l’étude des batteries est devenue une problématique majeure. Une batterie est un système électrochimique complexe qui dépend de nombreux paramètres et dont les performances déclinent avec le temps. Ainsi le développement d’un système de gestion efficient de la batterie (battery management system BMS) pour éviter les dégradations, étendre la durée de vie et optimiser son utilisation est une priorité. Un moyen d’obtenir une représentation intéressante de l’état présent de la batterie est d’estimer son impédance électrochimique. Cette thèse développe des techniques d’identification temps-fréquence de cette impédance, qui peuvent facilement être embarquées dans un véhicule ou un autre appareil. La première méthode développée permet non seulement une estimation précise de l’impédance, mais aussi un suivi de son évolution temporelle contrairement aux techniques classiques de spectroscopie d’impédance électrochimique. Cette méthode basée sur la transformée de Fourier repose sur un moyennage local récursif contrôlé par un seul paramètre. Celui-ci gouverne un compromis entre les performances de l’estimation et celles de la pour- suite. La capacité de cette méthode à estimer l’impédance au cours du temps est d’abord démontrée sur un simulateur, puis sur une batterie Lithium ion, sur laquelle une étude de répétabilité est réalisée, et enfin appliquée pour suivre l’évolution de l’impédance de la batterie d’un drone en cours de vol. La seconde méthode basée sur la transformée en ondelettes est développée afin de répondre à la problématique des phénomènes de longue dépendance telles que les réactions de diffusion limitée qui apparaissent dans les batteries. Des modèles de batteries reposant sur des circuits électriques équivalents incluent souvent des éléments à phase constante (constant phase element CPE) pour prendre en compte ces phénomènes. La méthode basée sur la transformée de Fourier est comparée à celle basée sur le transformée en ondelettes sur un simulateur de CPE grâce à une procédure de Monte Carlo. L’approche par les ondelettes avec son pavage temps-fréquence irrégulier apparaît comme une méthode particulièrement adaptée à ces phénomènes. A partir de l’impédance, quatre différents indicateurs de l’état de la batterie sont ensuite développés. L’estimation de l’état de charge via un filtre de Kalman étendu dans le contexte de l’étude de la batterie du drone pendant un vol est d’abord effectuée. Cette thèse s’intéresse aussi à l’estimation des paramètres du CPE liés aux phénomènes de longue dépendance. Un estimateur de la puissance maximale disponible généralement utilisée dans le secteur des transports est élaboré à partir de la réponse impulsionnelle de la batterie. Afin de prévenir du risque d’emballement thermique l’estimation de l’impédance est utilisée pour connaître l’état thermique de la batterie en estimant sa température interne. / More andmore applications rely on batteries, for instance in the field of transport, of smart grid, of connected objects. Therefore, the development of battery has become a crucial issue. Unfortunately, a battery is a complex electrochemical system which depends of many parameters and whose performance deteriorates over time. Thus the development of an efficient battery management system (BMS) to avoid damages, to extend lifespan and to optimize the use of batteries is a priority. One way to obtain interesting information representative of the present state of the battery is to estimate its electrochemical impedance. This thesis presents time frequency impedance identification methods which can be easily embedded in vehiclesor nomad devices.The first developed method not only allows an accurate impedance estimation but also a tracking of its temporal evolution contrary to classical electrochemical spectroscopy techniques. This method based on Fourier transformrelies on recursive local average controlled by a single parameter, managing a trade-off between tracking and estimation performance. The ability of the method to monitor the impedance over time is demonstrated on a simulator, then on a real lithium ion battery, on which a repeatability study is carried out, and finally applied to follow the impedance evolution of a drone battery during a flight.The second method based on wavelet transformis developed to deal with long-range dependence phenomena such as ion diffusion-limited reactions which occur in the battery. Battery models using electrical equivalent circuit often include Constant Phase Elements (CPE) to account for these phenomena. After compared wavelet to Fourier method on a CPE simulator thanks to a Monte Carlo procedure, the wavelet approach and its irregular time-frequency tiling appears to be an interesting method, specificaly for its minor bias error.To develop a powerful BMS, different battery indicators or parameters are then estimated from the impedance to be able to follow the state of the battery in real time and avoid damages. To optimise the use of battery the state of charge, the CPE parameters, the maximum available power and the internal temperature of the cell are estimated.
130

Measuring Comfort Level of Counselors-in-Training with Integrating Religion/Spirituality in Counseling

Jenkins, Cherisse Arianne 01 December 2009 (has links)
Despite their relevance to multicultural issues in counseling psychology, religion and spirituality (R/S) issues have been largely neglected in counseling and psychology training programs (Brawer, Handal, Fabricatore, Roberts, & Wajda-Johnston, 2002; Russel & Yarhouse, 2006; Schulte, Skinner & Clairborn, 2002). This study presents the initial validity and reliability estimates of the Scale of Comfort with Integrating Religion/Spirituality in Counseling (SCIRSC), a self-reported measure to assess the comfort level of counselors-in-training with integrating R/S in their clinical practices. Three hundred participants from clinical and counseling graduate psychology training programs participated in this study. The exploratory factor analysis resulted in 5 factors: R/S Self-Disclosure, R/S Interventions, R/S Reflection, R/S Supervision and Consultation, and R/S Exploration. The SCIRSC was positively correlated with measures of R/S training (RSTS; Wang et al., 2008), R/S competency (Wang et al., 2008), and R/S practice habits in counseling (PHP; Wang et al., 2008), and was not correlated with a measure of impression management (BIDR; Paulhus, 1991). High internal consistency was also found in the total SCIRSC scale and its five subscales. A discussion of how this scale can add to the research and practice regarding the incorporation of R/S in counseling is provided.

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