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 12 of 12 for “"long-term measurement"”.
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Long Term Measurement of Bandgap Voltage and System Level Integral Non-Linearity Drift
All modern precision measurement systems require voltage references that are stable across all variables, namely temperature and time. Most of these references are made through bandgap voltage circuits. While it is impossible to eliminate long term drift in these circuits it is industry standard to …
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Asynchronous differential power processing for true maximum power point tracking of photovoltaic sub-modules
… and neighbor-to-neighbor communication can have long propagation times in large arrays, so a communication-less solution was explored. An MPPT algorithm that could be run asynchronously was developed, and simulations confirmed its viability. Simulated tracking efficiencies of 99.977% and above …
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Novel Optical Sensors for High Temperature Measurement in Harsh Environments
Accurate measurement of temperature is essential for the safe and efficient operation and control of a vast range of industrial processes. Many of these processes involve harsh environments, such as high temperature, high pressure, chemical corrosion, toxicity, strong electromagnetic interference, …
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Retention Of The Newly Licensed Registered Nursing Workforce Post-Coronavirus (covid-19): Establishing A Trauma-Informed Wellness Program, The Registered Nurse Residency Script For The Future (rnrx) (© Maryellen Hope Kosturko, 2022)
… post-trauma. As the program is scaled, long term measurement of program impact on nurse retention is recommended. </p>
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On Pressure Regulation of the Middle Ear
… the ME pressure directly, continuously and long-term, in combination with ET provocation tests. Pathological conditions were characterised by a negative ME pressure during the daytime measurements, indicating an abnormality in the diffusion of gas from the ME and insufficient ET …
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Reliability of Tibial Measurement with Mechanical Response Tissue Analysis
… the cross-sectional bending stiffness (EI) of long bones, and thus can serve as a predictor of bone strength. Estimates of bone bending stiffness are derived from the point impedance response of a long bone to low frequency (70-500Hz) stimulation according to beam vibration theory. MRTA has …
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Mittelohrdruckmessung im Langzeittest und Fahrstuhlprovokationstest bei Patienten mit Morbus Menière
… and Menière’s disease. The present study used long-term middle ear pressure measurements in patients with Menière’s disease for the first time. Thirty-three patients with Menière’s disease used Otoflex 100 (GN Otometrics) to perform mobile repetitive tympanometry. Due to portability of the …
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LC-ESI-MS/MS quantification of hair cortisol, cortisone and DHEA in combined oral contraceptive users
… are a result of chronic biological stress from long-term COC use and that COC users are at greater risk of developing stress-related illnesses. Different combinations of estrogens and progestins in COCs have varying effects on the stress hormone, cortisol, and stress-related symptoms. Previous …
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Estimating Evapotranspiration of a Riparian Forest Using Sap Flow Measurements
… (ET) of a riparian forest, which were based on measurements of sap flow in phreatophytic vegetation within a riparian corridor. The riparian corridor was within a study area 75 to 140 meters wide in the lower portion of the Scotts Creek watershed, which is bounded to the west by the Pacific …
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Field Investigation of Stream-Aquifer Interactions: A Case Study in Coastal California
… a multi-scale approach combining multiple measurement techniques. Results of field investigations, including extensive direct push subsurface sampling, constant rate pumping tests, dye tracer tests, electrical resistivity interrogation of the subsurface, and long-term passive monitoring of …
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Detection of mass, growth rate, and stiffness of single breast cancer cells using micromechanical sensors
… of more precise, reliable, and versatile measurement techniques will provide a greater understanding the physical properties of a cell and how they affect its behavior. Microelectromechanical systems (MEMS) technology can provide tools for manipulating, processing, and analyzing single …
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Pitch, loudness and frequency selectivity in low-frequency hearing loss
… as patients' subjective reports and occasional measurements. Consecutive long-term measurements should provide more comprehensive information on the hearing fluctuations than the occasional audiogram used today and constitute an approach to quantify the fluctuations. Quantifications could …