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 660 for “"Repeatability"”.
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Design of Electromechanical Attachments for Improved Ultrasound Imaging Repeatability
Ultrasound imaging (or ultrasonography) is a common tool used for medical diagnostics. It has many advantages over other imaging modalities (such as MRI and CT) such as being more portable, less expensive, and lower power. Ultrasound imaging is emerging as a noninvasive diagnostic alternative in …
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Repeatability of alternating-current magnetization curves for ferromagnetic circuits
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1961.
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Validation and Repeatability of Pediatric Refractive Error Profile 2 (PREP2)
… The purpose of this study is to compare therepeatability and validity of the PREP2 to the PREP.This was done by having subjects take two administrations of the each survey,separated by a week. On the initial visit, the parents also completed a survey of how theybelieved their child felt …
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METHODOLOGIES FOR ESTIMATING REPEATABILITY AND REPRODUCIBILITY VARIANCES IN MULTIVARIATE DATABASES
Due to the huge amount of information available from spectra obtained from the analyses of biological samples using spectroscopic analytical techniques such as NMR or MIR/NIR multivariate analysis such as Principal Component Analysis (PCA) are required to understand the influence of major …
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Design of planar-flexure-based contacts for high-repeatability kinematic couplings
… the effects of planar flexural elements on the repeatability of a high-precision kinematic coupling. Few devices exist that are capable of passive, repeatable nanoscale fixturing; this research facilitates the design of such devices by providing a more complete understanding of how flexural …
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Assessment of the Repeatability and Sensitivity of the Thermoelectric Perfusion Probe
… the Thermoelectric Perfusion Probe displays good repeatability and sensitivity for continuously measuring perfusion. The sensitivity and repeatability of the Thermoelectric Perfusion Probe was proven when the perfusion estimates were compared to the perfusion estimates predicted by the Convective …
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Echocardiographic Assessment of the Canine Right Heart: Reference Intervals and Repeatability
… normal canine right heart. Phase 2) Describe the repeatability of normal right heart echocardiographic measurements. Phase 3) Describe the repeatability of right heart echocardiographic measurements which predict pulmonary artery pressure. Materials and Methods: Phase 1) 45 healthy adult dogs. …
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Machine design to improve accuracy and repeatability in on-site circular milling
… machine design to primarily improve accuracy and repeatability in on-site circular machining. On-site circular machining is used in the finishing and repairing of flanges most commonly used for mating with slewing bearings. The expected outcomes of the manufacturing processes are always …
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Methods of estimating repeatability and most probable producing ability in beef cattle
… for further study. To obtain a realistic repeatability value of adjusted 205-day calf weight, needed for calculating MPPA, separate estimates were first obtained for each herd by intraclass correlation. These values were 0.34, 0.00, 0.35 and 0.14. The individual herd sums of squares and …
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Analysis of the repeatability of time-lapse 3D VSP multicomponent surveys, Delhi field
… effects within the reservoir as well as non-repeatability effects. In order to get reliable results from time-lapse seismic methods, it is important to distinguish the production and injection effects from the non-repeatability effects in the 4D seismic signal. Repeatability of 4D land …
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Application of the ISO 9283 standard to test repeatability of the Baxter robot
… for Baxter, there is some confusion about the repeatability specification of Baxter. This thesis applies the ISO 9283 standard to test the manipulation repeatability of Baxter using an IR motion capture system. This test method varies movement speed, payload weight, and target location while …
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Evaluation of the Repeatability and Reproducibility of Network-Level Pavement Macrotexture Measuring Devices
The purpose of this thesis was to assess the repeatability and reproducibility of two high-speed macrotexture measuring systems. The first portion of the study collected macrotexture measurements using the two high-speed systems on the Virginia Smart Road facility and validated the reproducibility …
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Heritability and repeatability of speed for two- and three-year- old standardbred racehorses
… .79 ± .05. When records were adjusted for pace, repeatability and heritability estimates ranged from .32 ± .08 to .55 ± .04 and from -.25 ± .22 to .66 ± .15, respectively. Pooled estimates of t and h² were .44 ± .01 and .29 ± .03, respectively. When records were not adjusted for pace, sire, horse …
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Robustness and repeatability of interdigitated electrodes on a substrate tested in an aqueous environment
… impedance to the solution conductivities. The repeatability tests found an average slope of 1.438x10-5 cm/characteristic length with a standard deviation of 8.52x10 -8 cm/characteristic length. It was found that the number of defective fingers or bending the electrodes significantly changes the …
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A parametric study of the repeatability of 3D printed LEGO®-like mechanical couplings
… locators must enable sufficient accuracy and repeatability of the couplings. In this thesis, locator design was formulated and verified using contact area, interference, and stiffness of the couplings as the design variables. A LEGO®-like coupling design was printed out of ABS on an Afinia …
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The impact of sire daughter variability and repeatability on the accuracy of sire selection
… could be accounted for by factors examined. Repeatability of sire daughter variances suggested that 23 to 32% of the differences in sire variances could be attributed to sire differences. Heritability estimates of sire daughter variance were low to moderate and ranged from -.14 to .29. The …
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Assessment of the Measurement Repeatability and Sensitivity of a Noninvasive Blood Perfusion Measuring Probe
… of this research was to assess the measurement repeatability and sensitivity of the blood perfusion probe by testing the probe on phantom tissue, such that the effects of physiologic or pathologic conditions on the blood perfusion could be eliminated. Another objective was to conduct a …
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Heritability and repeatability estimates of first service conception and first cycle calving in Angus cattle
… the end result estimates of heritability and repeatability for these traits in Angus cattle. Data used for this analysis was sourced from the Colorado State University Beef Improvement Center (1985 to 2018; CSU-BIC; N = 8,206) near Saratoga, Wyoming where an Angus cow herd is managed for …
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