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 39 for “"biomechanical model"”.
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Biomechanical model of the shoulder joint
A biomechanical model of the glenohumeral joint has been developed to investigate muscle and joint loading during real life three-dimensional activities. Based on a rigid body mechanics approach, the model incorporates algorithms to correct for curved muscle paths and bone geometry, providing …
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An Examination of a Morphological, Cardiorespiratory and Biomechanical Model of Endurance Running Performance
… selected morphological, cardiorespiratory and biomechanical measures make in accounting for individual differences in endurance running performance of trained adult recreational runners. It was hypothesized that (1) cardiorespiratory function is the major determinant of endurance running …
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Development of a biomechanical model of the interface between the residual limb and prosthesis for trans-femoral amputees
… investigates the use of finite element (FE) modelling techniques to predict the biomechanical behaviour at the residual limb / socket interface for the purpose of obtaining a quantitative evaluation of socket fit. Three dimensional FE models of the residual limb of trans-femoral amputees were …
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The use of a novel residuum model to design a variable-impedance transtibial prosthetic socket
… not clinically applicable solutions. Due to model identification procedures that employ non patient-specific and incomplete data sets, today's finite element (FE) models of the residuum are not predictive, leading to suboptimal socket designs. As such, there exists a need for a comprehensive …
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Magnetic Resonance Imaging of the Levator Veli Palatini Muscle During Speech and Swallowing
… studies will be incorporated into a functional biomechanical model of the human pharynx. Such models will be useful in the development of therapy protocols and to assist surgeons in the plan for reconstructive surgery.
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Optimizing American Football Kickoffs
… minimizes the field position, an aerodynamic model for the ball trajectory and a biomechanical model for running players was used. The model confirmed that kicking the ball at a higher angle and at a higher velocity is better as long as the ball doesn't go into the endzone for a touchback. …
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Chronic Shear Stress Effects on Endothelial Cell Response
… of chronic pulsatile shear stress in our model would lead to changes in endothelial cell release of regulatory molecules. We distinguished between high arterial shear stresses and low venous shear stresses and used static cell cultures as reference. The first part of this research thus …
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A Composite Material-based Computational Model for Diaphragm Muscle Biomechanical Simulation
… important and biomechanics-based motion models may provide the most robust method as they are based on the physics of motion. In this study, we aim to develop a patient specific biomechanical model that predicts the deformation field of the diaphragm muscle during respiration. The first …
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Evaluating Model-Estimated Shoulder Muscle Activity During Overhead Work with Varied Task Demands and Exoskeleton Use
… and resource-intensive. Musculoskeletal modeling could simplify the process of ASE evaluation, by replacing electromyography (EMG) sensors with estimates of muscle activation. However, there is no existing evidence to determine whether model performance with ASE is sufficient or …
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Restoring Upper Extremity Mobility through Functional Neuromuscular Stimulation using Macro Sieve Electrodes
… Work presented in this thesis uses computational modeling to study the interaction between Macro-Sieve electrodes and regenerated peripheral nerves. It provides a detailed understanding of how regenerated fibers, both on an individual level and on a population level respond differently to …
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Efficient Object-Oriented Modelling, Simulation and Parameter Estimation for Biomechanical Problems
We identify anthropometric parameter for models of human beings and the corresponding macroscopic movement. The models are based on rigid--body formalisms and formulated as mechanical DAEs. We use the Generalized Gauß--Newton method based on multiple shooting discretization to estimate the …
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The Effect of Stifle Angle on Stifle Kinematics following TPLO: An in vitro Experimental Analysis
… limbs from 12 dogs were compared in an in vitro biomechanical study. Each limb was placed in a custom designed jig at 120° of stifle extension under an axial load of 20% body weight. Electromagnetic motion tracking sensors were placed on the distal femur and proximal tibia. A force was applied at …
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Analysis of an Anti-vibration Glove for Vibration Suppression of a Steering Wheel
… of these studies are based on experimental or modeling techniques, the level of effectiveness and optimum glove properties for better performance remains unclear. To fill this gap, the dynamics of the hand-arm system, with and without gloves, coupled to a steering wheel is studied analytically …
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An Exploration of the Emergence of Pattern and Form from Constraints on Growth
… by insufficient information regarding the biomechanical properties of bark and the corresponding difficulties in faithfully modeling bark fractures using continuum mechanics. Grasstrees, however, have a discrete bark-like structure, making them particularly well suited for computational …
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Prediction of Human Hand Motions based on Surface Electromyography
… method for sensing electrical activity in biomechanical studies, and has also been applied to motion tracking in recent years. While most studies focus on the classification of human hand motions within a predefined motion set, the prediction of continuous finger joint angles and wrist …
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Optimization-based biomechanical evaluation of isometric exertions on a brake wheel
… hand brakes. A static three-dimensional low-back biomechanical model was developed to estimate the levels of compressive force on the L3/L4 spinal joint that existed in subjects during an experiment that simulated the hand brake setting task. We recorded three-dimensional body posture and …
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Development and validation of a functional outcome measure package for total knee arthroplasty
… 3.5(L)x2.1(H)x1.1(W)m) and bespoke cluster-based biomechanical model were developed. Assessments for quantifying knee range of motion (ROM), knee strength, gait kinematics, and gait stability were incorporated into the software. Most results were reported in real-time. Validation studies of the …
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Modeling the Sit-to-Stand Transition using Koopman Lifting Linearization and Human State Estimation
… thesis presents contributions to the dynamic modeling of STS and to human-robot collaboration for improving robotic assistance of STS. To coherently capture the multi-phase nature of STS, lifting linearization, a dynamic modeling methodology inspired by Koopman operator theory, to subsume …
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Linear System Analyses of the Role of Reflex Gain and Delay in a Dynamic Human Spine Model
… spine is not clear. Previous studies enlisted biomechanical models to aid in understanding of how intrinsic stiffness stabilizes the spine. This work expands these previous studies by modeling the neuromuscular dynamic control of the spine. The presence of delay in the reflexive system limits …
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Biomechanically Constrained Ultrasound to Computed Tomography Registration of the Lumbar Spine
… as a sub-volume and transformed individually. A biomechanical model is used to constrain the displacement of the vertebrae relative to one another. The sub-volumes are then reconstructed into a single volume. In each iteration of registration, an US image is simulated from the reconstructed CT …
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