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 13 of 13 for “"rotation frequency"”.
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The Effects of Job Rotation Parameters on Localized Muscle Fatigue and Performance: An Investigation of Rotation Frequency and Task Order
… remain a substantial problem in the workplace. Rotation, in which workers are rotated between tasks, is widely used as an administrative control, as it is considered to reduce WMSD risk through reducing physical exposures and increasing exposure variation. However, despite its widespread use, …
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Effect of Loss-Cone-Like Scattering Transport on Particle Confinement and Rotation in the Field-Reversed Theta Pinch
… plasma disruption after a period of increasing rotation frequency. The objective of the present research was to develop theoretical models to explain the phenomena and simultaneously explore ways to reduce losses and spin-up.
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Rotating magnetohydrodynamic and trapped hot-ion induced internal kinks
… destabilized by the centrifugal effects at rotation speeds in the range of $10\sp4$-10$\sp5$ rad/s at normal discharge densities. The kinetic instability model provides a unified description of several features of the 'fishbone'-like oscillations such as the slow mode rotating at the plasma …
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Equation of state of rotating neutron stars
… neutron star properties are calculated at the rotation frequency of 500 Hz and compared for three EoSs which are based on pure nuclear matter, full baryon octet (both are constructed by taking nuclear structure into consideration) and finally strange quark matter (which is based on the MIT bag …
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Analysis of Worker Assignment Policies on Production Line Performance Utilizing a Multi-skilled Workforce
… be improved and reinforced by implementing job rotation. Lean production also prescribes using job rotation to improve worker flexibility, worker satisfaction, and to increase worker knowledge in how their work affects the rest of the cell. Currently, there is minimal research on how to assign …
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GPU-based, Microsecond Latency, Hecto-Channel MIMO Feedback Control of Magnetically Confined Plasmas
… adaptive system model: instead of requiring the rotation frequencies and growth rates embedded in the system model to be set a priori, the adaptive algorithm derives these parameters from the evolution of the perturbation amplitudes themselves. This results in non-linear control computations with …
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Adaptive feedforward cancellation viewed from an oscillator amplitude control perspective
… at integer harmonics of the fundamental spindle rotation frequency. We have developed a loop-shaping approach to designing multiple resonator AFC controllers and have implemented this design on a commercially available piezoelectric (PZ) driven FTS using a PC-based digital control system. Our …
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Squeezed states for advanced gravitational wave detectors
… vacuum (UHV) compatible, low phase noise, and frequency-dependent squeezed vacuum source required for Advanced LIGO and future gravitational-wave detectors. In order to develop the required technology, two proof-of-principal experiments were conducted. In the first experiment, we built a UHV …
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One- and two-qubit operations in Si-MOS quantum dots
… enhancement in the electrically-driven spin rotation frequency for silicon quantum dot qubits in the presence of a step at a hetero-interface. We calculate single qubit gate times of 170 ns for a quantum dot confined at a silicon/silicon-dioxide interface. To understand the origin of …
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Gravitational radiation detectability of supernova 1987A's remnant fully matched filter for double resonant gravitational detector
… intensity of this source reveals a main narrow frequency peak and side bands that are understood as a modulation of the main sinusoidal signal. A particular model of the neutron star invokes a precessing object to explain the modulation. From the Fourier spectrum of the source and changes in the …
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On some nonlinear partial differential equations for classical and quantum many body systems
… potentials and an additional angular momentum rotation term. This equation is a well-known model for superfluid quantum gases in rotating traps. We prove global existence (in the energy space) for defocusing nonlinearities without any restriction on the rotation frequency, generalizing earlier …
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Synthesis, Monitoring, and Molechanical Action of Light-Driven Motorized Nanomachines
… to the previous USN versions. By analyzing the rotation of a control molecule, it was demonstrated that the cy5-COT fluorophores do not affect the rotation of the motor. This improvement in photostability will further the study of the behavior of light-driven molecular machines in solution. To …
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Geometrically nonlinear configurations in rod-like structures
… whereby the filament buckles above a critical rotation frequency. We then augment our experiments and simulations to include the effect of a no-slip rigid boundary on the locomotion of uni-flagellar bacteria. We find that the propulsive force is strongly affected by the presence of a nearby …