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 187 for “"Time constant"”.
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Disentangling time constant and time dependent hidden state in time series with variational Bayesian inference
… Recurrent Neural Network (VBRNN) for modelling time series. The VBRNN contains explicit structure to disentangle time constant and time dependent dynamics for use with compatible time series, such as those that can be modelled by differential equations with time constant parameters and time …
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In Vivo Fluorometric Assessment of the Skin Microcirculation
… fluorescein signal is characterized by a wash-in time constant dependent on both the blood flow and permeability. Under flow-limited conditions the wash-in time constant is inversely proportional to the blood flow only. Significant differences in the fluorescein wash-in time constant were measured …
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A Novel Use for Ionic Polymer Transducers for Ionic Sensing in Liquid
… salt solution. A linear correlation between the time constant of the decay and the ionic size of the exchanging ion was developed that could reasonably predict a diffusing ion. Tests using an energy dispersive spectrometer (EDS) indicate that 90% of the exchange occurs in the first 20 minutes, …
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Sex Differences in the Oxygen Uptake Kinetic Response to Moderate Intensity Exercise in Obese Adolescents
… 4-min treadmill walking was used to determine a time constant. RESULTS: The time constant was significantly different (P=0.009) between obese male and female adolescents (15.42±7.31 s vs. 22.03±8.56 s, respectively). CONCLUSION: Sex differences exist in VO2 on-kinetics during moderate exercise in …
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Transient response of temperature sensors
Transient of time constant 10 seconds will be within 2 % of its final value in 40· seconds. Cancelling this response and iritroducing one of time constant 1 second enables the 2 % band to be reached in just 5 seconds. It was also possible to correct transient responses made up of two exponentials …
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Constant-Flux Inductor with Enclosed-Winding Geometry for Improved Energy Density
… reduce the package size of magnetic parts. The "constant-flux" concept discussed herein is leveraged to achieve high magnetic-energy density by distributing the magnetic flux uniformly, leading to inductor geometries with a volume significantly lower than that of conventional products. A …
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Cascade RLS with Subsection Adaptation
… the CRLS-SA algorithm based on the convergence time constant concept, which is the ratio of the condition number and the sensitivity. The CRLS- SA structure is shown to satisfy the DeBrunner-Beex conjecture which says that a structure with a smaller convergence time constant converges faster …
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Design of a miniature high-speed carbon-nanotube-enhanced ultracapacitor for electronics applications
… the primary factor responsible for the long time constant of ultracapacitors, scales approximately linearly with electrode finger width, thereby demonstrating a workable method for making miniature high-speed ultracapacitors. This work represents the first known example of controlling an …
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Missile autopilot design using Mu-Synthesis
… require greater maneuverability, faster response time, and increased robustness to more severe environmental conditions. One of the most critical missile system elements is the flight control system, since its time constant is typically half of the total missile system time constant. Conventional …
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The measurement and modelling of the intracrystalline diffusion of cyclohexane in ZSM-5 using zero length column chromatography
… of the linear (on semilogarthmic axes) long time region gives the diffusional time constant. This so-called 'long time' analysis gives an accurate result for the diilusional time constant.
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Post-exercise oxygen consumption and heart rate recovery as possible measures of the homeostatic stress of an exercise bout Theresa Naomi Carol Mann.
… investigate the magnitude of EPOC (EPOCMAG), the time constant of the EPOC recovery curve (EPOCτ),HRR within the first minute post-exercise (HRR60s) and the time constant of the HRR curve (HRRτ) as measures which might reflect the homeostatic stress of an exercise bout. It was hypothesized that a …
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Optimizing cycling power
… model which can be achieved by weighting the time spent below critical power over the time spent above critical power. This is because a cyclist becomes more exhausted by efforts at higher power outputs compared to the recovery at an effort below critical power. Second, energy balance models …
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Shear Modulus Relaxation of Bulk Metallic Glass, Palladium Nickel Phosphorus, Near the Glass Temperature
… with enough precision to determine how its time constant, tau, changes as the relaxation progresses. The results discriminate against models of glassy relaxation commonly found in the literature and are consistent with the Interstitialcy Theory.
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Artificial gravity : changing the intensity of coriolis cross-coupled stimulus with head-angle
… had an effect on adaptation on VOR gain, on time-constant, and on subjective reports (motion sickness, motion illusion and body-tilt). We found that: 1. The pattern of adaptation is different for the time constant r from that of the amplitude of the VOR: higher fractional decreases in r are …
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Organizational Relationships Through the Family Nutrition Program as Affected by Time and Rural and Urban Settings
When holding length of time constant, the data indicate that in urban settings, organizations making monetary contributions and participating for three or more years are proportionately more likely to contribute at a higher level per organization than those organizations participating in rural …
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Study of spray-cooling control for maintaining metallurgical length or surface temperature during speed drop for steel continuous casting
… key processing variables requiring a proper real-time control to meet product quality and operational safety demands. The main focus of the control methods currently used in the steel industry is maintaining steel surface temperature. Most of these control methods are open-loop. The main reason is …
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Analysis of hydrologic systems
… in the transfer function (Eq. 5-4) such as the time constant and the nonlinear parameter depend on basin characteristics and input intensity.
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AN UNBIASED SOURCE LOCATION ALGORITHM AND PERFORMANCE SURFACE OF ZERO TRACKING ALGORITHMS
… the saddle points for an appreciable amount of time. With only a single asymptotic time constant, the use of zero tracking has been found to have a transient convergence which is generally much faster and more uniform with respond to the starting positions and environment. Together with the …
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