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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.

Outcomes for the Hybrid Approach to First State Treatment of Hypoplastic Left Heart Syndrome

Crawford, Daniel 02 April 2018 (has links)
A Thesis submitted to The University of Arizona College of Medicine - Phoenix in partial fulfillment of the requirements for the Degree of Doctor of Medicine. / BACKGROUND & SIGNIFICANCE Hypoplastic left heart syndrome (HLHS) is a congenital condition that involves hypoplasia or atresia of left heart structures. Treatment requires three separate interventions, and the “hybrid” procedure is a less invasive alternative to the initial open-heart operation. This approach has become favorable for certain patients in recent years, but there is a need to better understand the outcomes and the factors that influence the outcomes for hybrid Stage 1 palliation of HLHS.

Requirements for a Remote Access Hybrid Computer Terminal Utilizing Common Grade Telephone Lines

Hester, William M. 09 1900 (has links) (PDF)
Florida Technological University College of Arts and Sciences Thesis / M.S. / Masters; / Florida Technological University College of Arts and Sciences Thesis / 40 p. / v, 40 leaves, bound : ill. ; 28 cm.

Sun, wind and water : A case study

Marklund, Jesper, Nordin, Maria, Spinelli-Scala, Robin January 2012 (has links)
The purpose of this project is to evaluate the feasibility of a water treatment plant at a given location, supplied partially or entirely with renewable energy. The system analysed is a PV/Wind hybrid system. Economic and technical conditions for the system are calculated. The power demand of the plant, determined by the water demand at the given location, will be met by renewable energy to a degree depending on local weather conditions and the technical products used. This will result in a yearly coverage ratio of renewable energy, which determines the power need from the distribution grid as well as the payback time of the system. A case study is made on an existing water treatment plant at Fårö. The result shows that the cover ratio, with power supply from sun and wind, would reach 62 %. However, the total energy produced by the hybrid system exceeds the demand. In order to use all the energy produced, the hybrid system would need energy storage and a possibility to sell excess energy to the power distribution grid. A sensitivity analysis of the hybrid system is made by changing ingoing parameters and components.

Adult Students' Perception of the Congruence of Hybrid Courses with Their Adult Learning Needs and Their Satisfaction

Iqbal, Rubina 14 May 2012 (has links)
The overall purpose of the study was to examine adult students' perception of the congruence of hybrid courses with adult learning needs and to examine adult students' level of satisfaction with hybrid courses. The study collected data through pre and post surveys, administered at the beginning and near the end of the hybrid courses, of adult students' perceptions. The pre survey questionnaire sought quantitative responses only. The post survey sought quantitative and qualitative responses. The quantitative data was analyzed by utilizing the Statistical Package for Social Sciences (SPSS). / School of Education; / Instructional Technology (EdDIT) / EdD; / Dissertation;

Switched Linear Systems: Observability and Observers

Babaali, Mohamed 12 April 2004 (has links)
Switched linear systems have long been subject to high interest and intense research efforts, not only because many real world systems happen to exhibit switching behaviors, but also because the control of many complex systems is only possible via the combination of classical continuous control laws with supervisory switching logic. A particularly important problem is that of estimator and observer design, since the state of a system is usually only available through partial, often noise-corrupted, measurements. Even though hybrid estimation has been around for at least thirty years, a veil of mystery has surrounded the concept of ``observability' in switched linear systems. It is not until recently, with the recent renewal of interest toward deterministic hybrid systems, that observer design and observability analysis have fuelled sustained research efforts. It is in this context that this work is grounded. More precisely, the objective of this research is twofold: - To define proper concepts of observability in discrete-time switched linear systems, to characterize them, and to analyze their main properties, among which decidability is of special importance. - To propose and analyze observers - deadbeat and asymptotic - for such systems. The main contributions of this dissertation are as follows. It is shown that pathwise observability, i.e. state observability under arbitrary mode sequences, is decidable. Furthermore, the Kalman-Bertram sampling criterion is carried over to switched linear systems. Under unknown modes, mode and state observability are both characterized through simple linear algebraic tests, and are shown to be decidable in the autonomous case. As for asymptotic observers, a direct algebraic approach is proposed for the class of linear systems subjected to switching in the measurement equation.

Optimierung des Lastschaltvorgangs im i2-Getriebe

Krastev, Ianislav. January 2005 (has links) (PDF)
München, Techn. Universiẗat, Diss., 2005.

Optimierte Auslegung einer modularen Dauermagnetmaschine für ein autarkes Hybridfahrzeug

Krasser, Bernhard. January 2000 (has links) (PDF)
München, Techn. Universiẗat, Diss., 2000.

Optimierung des Lastschaltvorgangs im i²-Getriebe

Krastev, Ianislav. January 2005 (has links) (PDF)
München, Techn. Univ., Diss., 2005.

Performance of corn hybrids with various ratios of flint-dent germplasm in different environments

Hoen, Klaas, January 1959 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1959. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Bibliography: leaves 37-41.

Maturity classification in some Wisconsin corn hybrids

Obajimi, Adesegun Obafemi, January 1969 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1969. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

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