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 54 for “"scaling factor"”.
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Algorithms for three-dimensional free-form object matching
… correspondence or initial transformation and no scaling effects, namely the KH and the umbilic method. The KH method establishes a correspondence between two objects by utilizing the Gaussian and mean curvatures. The umbilic method uses the qualitative properties of umbilical points to find …
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Deuteron compton scattering below pion threshold
… that matched prior experiments but needed a scaling factor to bring the absolute cross section into agreement. This scaling factor was determined to have a value of 1.47 $\pm$ 0.10. Suggestions are made for future studies that could yield further knowledge of the scaling factor and …
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An experimental investigation of circular plates, beams and stiffened circular plates subjected to impulsive loading
… was modified to include an experimental mass scaling factor due to the ballistic pendulum mass. A non-dimensional number for rectangular beams was developed, including a similar experimental mass scaling factor. Comparing the beam and plate results from this study with those of previous work, …
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Modelling and Control of Chemical Processes using Local Linear Model Networks
… first order pH model with 4 local models and the scaling factor is 20. Moreover, local linear model networks are also used to identify and control the level of dissolved oxygen. To select the best method for system identification, a gradient descent learning algorithm is also used to update the …
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High -Throughput and Universal Architectures for Reed -Solomon Decoders
… respect to two polynomial bases are studied. The scaling factor associated with the universal multiplier is shown to be inconsequential to the universal RS decoder. Architectures for all three blocks of universal decoder are discussed.
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X-Ray Debye -Waller Factor Measurements of Helium Crystals
… larger at similar densities. A 3He-4He mass-scaling factor of 4/3 for the equivalent Debye temperature for the measured Debye-Waller factor was observed. This Debye temperature falls with increasing temperature, contrary to what would be expected for a quasi-harmonic model, most likely due to …
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Structural Vulnerability of Coastal Bridges Under Hurricane Conditions
… models with a range of explicit parameters (mass scaling factor, damping hourglass control, displacement hourglass scaling factor, and bulk viscosity scaling factors) and configurations (mesh size) and to determine optimal filter designs. This work resulted in recommendations for conducting …
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The unsteady combustion of radiant heat flux-driven energetic solids
… is somewhat more complicated than a constant scaling factor. Even for surface absorption, a constant scaling factor may sometimes be inadequate. Steady burning in the presence of a radiant flux has been considered briefly also.
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Scalability in Real-Time Systems
… are qualified by a measure (called the scaling factor) of the systems ability to continue to provide these guarantees under possible changes to the tasks. This measure is shown to have many applications in the design (task execution time estimation), development (portability and fault …
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Total-to-peak ratios of high purity germanium gamma ray detector
… these points and after an energy independent scaling factor fit the data with a reduced [chi]² slightly below 1. The same experiment was repeated with a lead brick and then a β detector near the Ge detector and these objects were found to not have an effect on the total-to-peak ratios within …
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QT variability calculation using a template matching algorithm and power spectral analysis
… error function, which is minimized to find the scaling factor for that beat. These scaling factors are compiled into an array, and an interpolated signal is generated of QT interval times. Using Lab VIEW and MATLAB, the algorithm was put into place, and frequency spectral analysis conducted on …
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Simulação do fenômeno de infiltração em modelos chuva-vazão
… were briefly analyzed. Similar media and scaling factor concepts were introduced in order to simulate soil spatial variability.
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Precision spectroscopy of circular Rydberg states of hydrogen
The Rydberg constant, R[infinity], is the scaling factor which link the spectrum of atomic hydrogen to practical laboratory energy units. Thus it has intrinsic importance by providing information on our simplest atomic system. Precision measurements of the Rydberg constant, or more accurately of …
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Evaluation of Non-Covalent Interaction Models in Molecular Crystals Using Terahertz Spectroscopy
… has been identified. Modifications of the scaling factor and atomic parameters within this method have led to more accurate simulations, termed the DFT-DX model. In addition to this work on improving London dispersion force corrections, solid-state DFT calculations with these enhancements …
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Direct simulation Monte Carlo (DSMC) in micro flows
… control method and mass flux method. The scaling factor and the number of particles in each cell in DSMC have significant effects on the accuracy of results. Their effects are systematically studied in this thesis and the guidance was provided to ensure the accuracy and efficiency of the …
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Macroscale Design and Modeling of Multifluidic Cantilever Devices for Advanced Nanoscale 3D Printing Applications
… and attempt to determine a suitable scaling factor for transitioning the macroscale model to micro/nanoscale dimensions while ensuring that performance of the device remains replicable. Preliminary functional requirements of the device/mechanism include steady state fluid switching …
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An investigation of the response of different materials to blast loading
… of the materials except for Dyneema. Initially a scaling factor was used to account for the varying stand-off distances but proved to be unnecessary due to the type of confinement used (unconfined free air-blasts versus partially confined tube). Once the scaling factor was removed, the …
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Development of a Prospectively Motion Corrected Free-breathing FLASH Sequence.
… is then prospectively adjusted using a linear scaling factor to perform slice following of the heart. Typically, a generalized scaling factor of 0.6 is used but this does not compensate for the variation amongst subjects nor the 3D nature of the heart. The performance of the control system was …
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Finite Element Modelling of Ventilated Brake Disc Hot Spotting
… axisymmetric brake pad assumption with material scaling factor and the friction characteristics were defined by a user-subroutine. The computing accuracy and efficiency of this method were then verified by comparing with traditional FE models. 2D in-plane, 2D out-of-plane, and 3D models were …
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On triangular finite elements for general shell structures
… shell problem which has a fluctuating load-scaling factor. These results provide basic information for effective numerical tests of shell finite elements. We develop a new systematic procedure for the strain interpolation of MITC triangular shell finite elements that results into spatially …
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