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 253 for “"Cross-over"”.
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Statistical considerations in the design and analysis of cross-over trials
Cross-over designs are frequently used in clinical trials, usually to compare two treatments. It has long been known that the simple two-period cross-over is adversely affected by the presence of carry-over effects, but it is nevertheless still commonly used. This thesis examines the problems …
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Cross Over and Duality. Murakami’s Integration of the Fantastical into the Ordinary
… works of Japanese fictions, the concept of crossover and duality is widespread. An example of crossover can be the concept of time travel or the crossing into another dimension. On the other hand, duality deals with the concept of two or more identities being related to one single being. …
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Direct measurement of vanadium cross-over in an operating redox flow battery
… the performance of the VRB is affected by the cross-over of electrolytes through the ion-exchange membrane which separates the positive and negative electrolytes. Cross-over causes degradation of energy storage efficiency and long term capacity loss. Previous studies of ion cross-over have …
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'Cross-over' comedy in seventeenth-century England : from Michaelmas Term to The Roundheads
… of the English monarchy in the 1660s. The “cross-over” comedies have been dismissed as leftovers from the last days of the playhouses before their closure in 1642, their revival in the Restoration seen as dictated by the scarcity of available new texts. This thesis argues instead that these …
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Ground Reaction Force Analysis of the Anterior and Cross-Over Single Leg Hop Tests
… distance and time, and then gradually move to cross-over hops for distance and time using a 15 cm cross-over. It is thought that the 15 cm cross-over hop is an optimal distance to stimulate excess forces on the lower extremity when compared to the anterior hop. When the athlete is able to …
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The rehabilitation of atrophic jaws using short implants with different surface treatment. A multicentred cross-over randomized trial
L'abstract è presente nell'allegato / the abstract is in the attachment
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A cross-over randomised controlled trial of selective pressure impressions for lower complete dentures and laboratory investigations into impression pressure variation
… investigate new issues and re-address old controversies where the evidence in the literature was conflicting or deficient. Part III investigates the specific distribution of pressure within the impression technique used for the clinical trial of Part IV, concluding that the pressure was …
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Chronic versus acute ingestion of sodium citrate: a randomized placebo controlled cross-over trial for swimming 200 metres in well-trained swimmers age 13-17
A double-blinded, placebo controlled, cross-over design was used to investigate sodium citrate dihydrate (Na-CIT) supplementation improve 200m swimming performance. Ten well-trained, male swimmers (14.9 ± 0.4y; 63.5 ± 4kg) performed four 200m time trials: acute (ACU) supplementation (0.5g/kg), …
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Randomised cross-over trial assessing the impact of angle, area, distance, curvature, volume, spatial coordinates, and effect of eye exercises in surgical task performance: 2D vs 3D laparoscopic vision
… design</b>: A prospective, cross-over and randomized study in a purpose built, state of the art laboratory setting based at the Cuschieri Skills Centre (CSC).<br/><br/><b>Methods and materials</b>: A full research protocol was submitted for ethical approval. Consented …
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A mixed method examination of racial disproportionalities among youth who cross over from the child welfare to the juvenile justice system: child welfare and juvenile justice professionals' perspectives and racial attitudes
… are disproportionately represented in those who cross over from involvement in the child welfare to the juvenile justice system. During individual, semi-structured, audio-recorded interviews, 33 experienced child welfare, law enforcement and court professionals first described their perspectives …
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Polar frequency discriminators
… are required to measure frequency accurately over very broad bandwidths and to have near unity probabilities of pulse intercept. The major difficulties of the most commonly reported version are identified as a lack of component symmetry and a need to cross over two transmission lines while …
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Effektivität der neuen 7-Tage-Tripel-Therapie mit Esomeprazol, Rifabutin und Amoxicillin bei Infektionen mit Makrolid- und Imidazolresistenten Helicobacter pylori Stämmen
… Von Ihnen erhielten 83,3% die vorgesehene Cross-over-Therapie. Bei der nächsten Kontrolluntersuchung konnte in 80% der Gruppe 1 (mOA Cross-over-Therapie) sowie 80% der Gruppe 2 (ERA- Cross-over-Therapie) ein negativer Nachweis von Helicobacter pylori gezeigt werden.
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The influence of a dietary supplement (NDS Baseline Probiotic) on the gastrointestinal quality and physical performance of endurance runners
… randomised controlled and double-blind cross-over design. The overall observation period lasted 12 weeks, three periods of 4 weeks each: First intervention period (I1), wash-out period (WOP) and second intervention period (I2). In total there were four examinations, three by a medical …
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Height change detection in Antarcita using satellite altimetry data and Kriging / Kalman filtering techniques
… sets with high accuracy and uniform ice-sheet coverage. The most common technique used in analyzing satellite altimetry data to study height change in the ice sheets is the dH/dt technique based on the cross-over geometry. In this thesis two alternative techniques to cross-overs are studied and …
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Flow in two-stage channels with the main channel skewed to the flood plain direction
… channel. In other words, an element of `lq cross over flow is introduced, where the flood plain flow crosses over a skewed main channel beneath. This element is absent in study of a straight and parallel channel/flood plain system. The thesis begins by introducing the subject of two-stage …
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A Practical Extension to the AB/BA Design
… general extension to the traditional AB/BA<br />crossover design that is commonly used in clinical trials to determine the effectiveness<br />of new candidate drugs. While the traditional crossover design requires each patient<br />in the study to be measured on both treatment A and treatment B, …
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The place of crossover designs in infertility trials
… as an unsuitable condition in which to run cross-over designs. Because if treatments are successful, then some women will become pregnant in the first period of treatment and if they become pregnant in the first period they are very unlikely to be treated in the second period. If data from …
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Quasi-condensation in low-dimensional Bose gases
… gas to the quasi-condensate, which is a smooth cross-over rather than a phase transition, is not possible though. Basic conditions for the applicability of the theories are not fulfilled in this regime, such that the existence of a critical point is predicted. The theories are compared on the …
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Critical current anisotropy in high temperature superconductors
… with the predictions of a field angle dependent cross-over from a three dimensional rectilinear FLL to a kinked lattice of strings and pancakes. The pinning force density for movement of strings inside the cuprate planes is considerably less than that on vortex pancake elements. When the FLL is …
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Designing interfacial structures for selective electrocatalysis
… on the tolerance of electrode catalysts to cross-over species. A typical polymer electrolyte membrane fuel cell (PEMFC) employs a Nafion-based membrane to separate the Pt-based cathode and anode. Nevertheless, the intrinsic porosity of Nafion membranes allows reactants and products to cross …
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