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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 661 for “"magnet"”.
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Design framework for magnet loss reduction in permanent magnet synchronous machines
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-12-01
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Organizational, Nurse, and Patient Empowerment at a Magnet and Non-Magnet Hospital
… nurse, and patient empowerment at a Magnet designated hospital versus a non-Magnet designated hospital. There are three aims to the study. Aim 1 examines the relationship between level of organizational empowerment and individual nurse self-empowerment (Self-efficacy). Aim 2 examines …
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Processing and protection of rare earth permanent magnet particulate for bonded magnet applications
… MRE2 Fe14B (MRE = Nd, Y, Dy; currently), magnet alloys via high pressure gas atomization (HPGA) have produced similar properties and structures as closely related alloys produced by melt spinning (MS) at low wheel speeds. Recent additions of titanium carbide and zirconium to the permanent …
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Nurse Manager Transformational Leadership Practices and Patient Outcomes Among Magnet and Non-Magnet Hospitals
… practices, patient outcomes and hospital types (Magnet, On The Journey, and Non-Magnet). A correlational study examined relationships between self-reported transformational leadership practices of nurse managers and patient outcomes by hospital types. The study was conducted using a purposive …
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Exploring the Prevalence of Horizontal Violence in Nursing Between Magnet and non-Magnet Hospitals
… of Horizontal Violence in Nursing Between Magnet and non-Magnet Hospitals</p> <p>Cathleen Janzekovich</p> <p>Seton Hall University</p> <p>Dr. Genevieve Pinto-Zipp</p> <p>Abstract</p> <p>Statement of the Problem: The nurses work environment influences patient, nurse and organizations …
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Achievement gains of average ability students in a magnet program versus a non-magnet program
… to determine the effect, if any, of a selected magnet school program on achievement of average ability students. Repeated academic growth of average ability elementary magnet school students was compared with repeated academic growth of average ability elementary non-magnet school students in a …
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The Relationship between Nurse Manager Leadership Attributes and Nurse Clinical Autonomy: Magnet Versus Non-Magnet Hospitals
… evaluated relationships among hospital types (Magnet versus non-Magnet), nurse manger leadership attributes, and staff registered nurse autonomy. Hypothesis: Magnet hospital status would be related to positive nurse manager leadership attributes which would be related to greater clinical nurse …
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Design optimization of permanent magnet actuators.
This study describes the design optimization of permanent actuators, of both rotary and linear topologies. Parameter scanning, constrained single and multi-criterion optimization techniques are developed, with due emphasis on the efficient determination of optimal designs. The modelling of devices …
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Radiation Damage in Permanent Magnet Lenses
… National Lab and elsewhere depend upon permanent magnet quadrupoles in their magnetic optics. Radiation exposure during radiography experiments is known to damage these lenses and degrade image quality. This effect is studied under controlled conditions, leading to the conclusion that nonuniform …
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Magnetisation reversal in permanent magnet materials
… presents an investigation of the reversal of magnetisation in sintered anisotropic Nd-Fe-B, isotropic melt-spun Nd-Fe-B powder, and in Sm-(Co,Cu,Fe,Zr) 2:17 anisotropic powder. Magnetisation measurements have been performed using vibrating sample magnetometers, a permeameter, and an adapted …
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Magnet Schools: Implications for Curriculum Development
… is the Kankakee, Illinois School District 111 magnet school program, including a comparison of the magnet program to the regular or nonmagnet curriculum program in Kankakee. Findings indicated that magnet students exhibited greater gains in some areas, including test results, as compared to …
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A Science & Mathematics Magnet School at Maymont
… individualized learning."A Science & Mathematics Magnet School at Maymont" explores a type of school that is becoming more familiar and accessible. By allowing students who have an interest in excelling in school and preparing for their future careers to come together and meet one another and …
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Torque estimation in permanent magnet synchronous machines
… de sus imanes, junto con el riesgo de desmagnetización debido a corrientes y/o temperaturas de funcionamiento excesivas, son algunos de los grandes inconvenientes a tener en cuenta en este tipo de máquinas. Como consecuencia, las máquinas de reluctancia síncrona han ganado popularidad en …
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Critical District Supports for New Magnet Programs
<p>Magnet schools have been a remedy districts, including the district under study, use to create voluntary integration within school districts under court-ordered desegregation. The purpose of this study was to determine how district leaders can support magnet programs in districts not receiving …
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New Sensorless Permanent Magnet Synchronous Motor Drive
In permanent magnet synchronous motor (PMSM) drives, magnetic-saliency-based techniques have been widely used to detect rotor position and speed, especially during the starting and low-speed operations. Among these techniques, pulsating high-frequency signal injection (PHFSI) stands out as a …
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A study of permanent-magnet torque motors
Thesis (M.S.) Massachusetts Institute of Technology. Dept. of Mechanical Engineering, 1953.
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Hydrodynamics of magnet-coil actuated robotic fish
… Scuba Fish. Both of these robotic fish use a magnet-coil actuation method in order to create caudal fin motion. A velocity imaging technique,, Particle Image Velocimetry (PIV), was used in order to characterize the wake structure created by the tail beat. Both robotic fish were towed through …
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A Comparative Investigation of Achievement of Magnet School and Non-Magnet School Students Based on Standardized Tests and Teacher Perception
… achievement levels in math and reading of magnet and non-magnet school students. A secondary purpose was to identify factors which, in the judgment of professional employees experienced in working with both magnet and non-magnet school students, impede or enhance achievement of magnet …
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Super High-speed Miniaturized Permanent Magnet Synchronous Motor
… is concerned with the design of permanent magnet synchronous motors (PMSM) to operate at super-high speed with high efficiency. The designed and fabricated PMSM was successfully tested to run upto 210,000 rpm The designed PMSM has 2000 W shaft output power at 200,000 rpm and at the …
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