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 24 for “"Angular Displacement"”.
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The Effect of Optic Flow During Attention Related Tasks and Quiet Stance
… quantify balance. The mean angle RMS of relative angular displacement of the hip, knee and ankle was calculated, and the mean angle RMS of absolute angular displacement of the trunk, thigh, shank, foot was calculated to quantify balance. Developing a greater understanding of complex dynamics of …
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The Relationship Between Torque and IEMG During Proportional Shortening of the Biceps Brachii Muscle
… of the biceps brachii muscle where the angular displacement to each subject was based upon the resting length of their muscle. Thirty male subjects participated in the investigation after giving informed consent. The results of the investigation supported the conclusion that the …
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An Investigation of the Relationships Between the Angle of Mental Rotation Required For Spatial Orientation, Response Times, and Accuracy
… of the data indicated that as the amount of angular displacement increased from the straight ahead and directly behind positions, the response times and accuracy rates increased and decreased respectively. Additionally, responses for the cardinal orientations were faster than the non-cardinal …
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An experimental and simulation based approach toward understanding the effects of obesity on balance recovery from a postural perturbation
… types of postural perturbations: an initial angular displacement, an initial angular velocity from the natural stance, and an initial angular velocity from a prescribed position. Obese participants were unable to recover balance using an ankle strategy as well as normal-weight participants …
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NMR von rotatorischer und translatorischer Dynamik
… is described that allows the computation of angular displacement propagators out of two-dimensional solid-state exchange NMR spectra, describing the rotational motion of the molecules. This analysis was performed for the example of dimethylsulfone and simulated data. PFG-NMR is used to …
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Gait pattern detection for amputated prosthetic using fuzzy algorithm
… focuses on developing a system to measure the angular displacement of human joint of lower part with patients having this problem and then applying gait phase detection using intelligent algorithm. The developed prototype has three inertial measurement units (IMU) sensor to measure and quantify …
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Development of a method for kinematic analysis of the doffing process for a specific garment style
… WATSMART® (electro-optical) cameras. Relative angular displacement vs. time data were generated from video recordings using the Posture Taxonomy instrument, and from WATSMART recordings using a computer program. The movement experienced by the shoulder and elbow joints were close to the maximum …
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Examination of the magnitude and timing of hip flexion torque in high degree of difficulty forward somersault dives on the 3m springboard
… to yield vertical and horizontal velocity and angular displacement data. Furthermore, the hip joint torque was calculated via a six segment 'top-down' model. An independent sample t-test was used to determine whether there were any significant differences between the two gender groups for …
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Dynamic stability of an elliptical pendulum with unilateral simple supports
… was at rest (in the vertical position). The angular displacement, angular velocity and angular acceleration were calculated with respect to time, for systems with fixed or unilateral supports.;A mathematical model was developed to simulate the dynamic response of the elliptical pendulum with …
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Dynamics and structures of linear and supercoiled DNAs
… An expression is given for the mean squared angular displacement $$ of the $m\sp{th}$ bond-vector around the instantaneous x-axis (perpendicular to the end-to-end vector z). The normal mode theory is compared with Brownian dynamics simulations for the same model by examining $3 $ for the …
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Quantification of Cervical Spine Motion During Application of a Rigid Cervical Immobilization Collar
… <p>Measurements: During application, peak angular displacement (PAD), total linear distance (TLD), total angular distance (TAD), and application time were recorded. PAD was also recorded during the supine and seated ROM testing.</p> <p>Results: Significant differences (p < .01) between …
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Passive Stiffness Characteristics of the Scoliotic Lumbar Torso in Trunk Flexion, Extension, Lateral bending, and Axial Rotation
… and inertial measurement units (IMU) recorded angular displacement of the upper torso relative to the pelvis and lower extremities. Torque-rotational displacement data were fit using a double sigmoid function, resulting in excellent overall fit (R2 > 0.901). The neutral zone (NZ) width, or the …
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Biomechanics of the canine thoracolumbar spine in lateral bending
… point bending. The slopes of bending moment vs. angular displacement curves were compared and significance determined by the method of least squares. A statistical difference (p < 0.05) was found between the stiffness of all diskectomy groups when compared to any other group. Unilateral and …
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The Effects of Fatigue on Biomechanics of Soccer Shooting
… No significant difference was showed on the angular displacement, velocity, and acceleration of the lower extremities. The results of this study showed that fatigue caused ball’s shooting velocity to be significantly lower. Therefore, this study provides a crucial understanding about how …
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Fish fins and fast-starts: Multi-level analyses reveal functional variation within median fins of bluegill sunfish.
… the fish undergoes a rapid acceleration and displacement to avoid predation. During this behavior, timing and magnitude of angular displacement and curvatures among fin-rays also differed predictably with longitudinal position. Most interestingly, a chordwise cupping of all three fins during …
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Development of Continuous Two-Dimensional Thermal Field-Flow Fractionation for Polymers : Academic Dissertation
… the channel thickness and the radial and angular flow rates of the carrier caused significant narrowing of the zone broadening. Systematic variation of the experimental parameters allowed determination of the conditions required for the continuous fractionation of polystyrene polymers …
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Scoliosis Analog Model for the Evaluation of Bracing Technology
… of the force components applied to the model and angular displacement of the linkage assembly were used to calculate the brace structural stiffness properties. The brace was tested using two types of straps (Velcro and buckle) applied in various configurations and compared to an unconstrained …
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Quantitative characterization of multi-variable human ankle mechanical impedance
… which is a dynamic relationship between angular displacement and the corresponding torque at the ankle joint, plays a key role in natural interaction of the lower-extremity with the environment. The human ankle is a biomechanically complex joint consisting of three bones with …
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Spine Lifting Biomechanics Between Varying Occupational Activity Levels And Recreational Physical Activity Levels
… curves of trunk segments; included was maximum angular displacement of the middle trunk and lower trunk. Kinetic dependent variables were calculated from the GRF and GRM data, including maximum anterior excursion, maximum anterior velocity, and sway area of the center of pressure (COP) …
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