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 30 for “"Head position"”.
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Using head position to enhance human interfaces
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Architecture, 1990.
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Head Position Variability During Single and Dual-task Tandem Gait Concussion Testing Protocol
… possible sports-related concussions. To date, head position is not controlled for, nor has its potential influence been studied during TG testing. PURPOSE: Examine the difference in the mediolateral (ML) sway and velocity and time to complete between two head positions of cervical neutral and …
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Evaluation of two reference planes to the horizon in the natural head position
… horizontal when the patient is in the natural head position. Ten subjects were evaluated in the natural head position with angular measurements made from lateral photographs and lateral skull radiographs to determine the relationship of these two reference planes to the true horizontal plane. …
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The effects of changing head position and posture on head tremor in individuals with essential tremor involving the head
Objective: To determine the effects of head position and of different postural control demands on head tremor measures in participants with essential tremor. Methods: Seventeen participants with essential tremor (ET) of the head and 17 control participants took part. Individuals held their heads in …
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Visual-Oculomotor and Head Movement Strategies in Postural Control
… technology provides the opportunity to track head and eye movements, which reflect both biomechanical adjustments and sensory integration, and may serve as an alternative for evaluating postural stability. This dissertation investigates the use of head and eye movements as markers of postural …
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The Effect of Optic Flow During Attention Related Tasks and Quiet Stance
… within virtual reality (VR) relative to the head position while participants stood quietly on a force plate that measure ground reaction forces and completed 12 randomized trials across 3 conditions. Kinematics were collected through 8 markers placed on different parts using motion capture. …
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Evolution of Female Profile Aesthetics in Fashion Magazines Over the Last Century (1920-2019): An Orthodontic Soft-Tissue Analysis
… standardized for size, orientation, and head position. Key soft-tissue landmarks were digitized, with measurements focusing on facial convexity, maxillary and mandibular position, lip projection and volume, and chin and throat dimensions. Significant changes (p < 0.05) were observed …
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Evaluation and Feasibility of a Head Positioning Intervention in Patients with Intraparenchymal Hemorrhage
… outcomes in IPH stroke patients; however, head elevation may be one of the most important first steps to promote clinical stability in the hyperacute stage of IPH stroke because of the risk of increased intracranial pressure (ICP) in these patients. Nursing research completed in the late …
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Filter and bounding algorithm development for a helmet mounted micromechanical inertial sensor array
The technical evolution of head mounted displays (HMDs) and micromechanical inertial sensor arrays (MMISAs) have, until recently, occurred independently. This thesis details the development and simulation results of an inertial helmet-mounted head tracker for a T- 38 jet aircraft flight …
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Automatic design tool for robust radio frequency decoupling matrices in magnetic resonance imaging
… sensitivity analysis with respect to patient head-size and head-position for MRI coils.
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A high-throughput antiepileptic drug screening system based on chemically Induced zebrafish behavioral model
… that tracks the locomotion variables like the head position, the tail movement and sideway orientation etc. is developed. The tracking results are treated either by simply computing the statistics of the tracking variables or implementing behavior pattern classifications. Two test datasets …
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AP Relationship of the Maxillary Central Incisors to the Forehead in Adult Korean Females
… of the maxillary central incisors to the forehead in adult Korean females with harmonious profiles and in adult Korean female orthodontic patients. Methods: Ninety five photographic images of adult Korean females with good facial harmony (control group) were compared with 95 photographs of …
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Experimental and Analytical Examination of Golf Club Dynamics
… available equipment. This has led to larger club-heads, with larger ?sweet spots?, different shaft thickness for different swing styles, and the use of advanced materials, such as graphite and titanium, for the construction. The development of improved equipment, which utilizes advanced materials, …
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An investigation into regional ventilation in infants and children; its distribution and determinants
Changing body position is commonly used in the management of individuals with respiratory diseases and those receiving mechanical ventilation, in order to optimise ventilation and oxygenation. In acute respiratory distress syndrome (ARDS), prone positioning is reported to improve oxygenation by …
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Head tracking two-image 3D television displays
… of an appropriate non-contact infrared head tracking method suitable for use with 3D television displays is also included. The thesis describes how the operating principle of the displays is based upon a twoimage system comprising a pair of images presented to the appropriate viewers' …
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Usability Studies with Virtual and Traditional Computer Aided Design Environments
… system is employed for tracking of the user's head position and position of a wand in 3D space. It is argued that with these immersive technologies along the use of gestures and hand movements should provide a more natural interface with the immersive virtual environment. This allows a more …
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The impact of head and body postures on the acoustic speech signal
… carried out to quantify the influence of five head positions and three body orientations on the acoustic speech signal. Results show that there is a consistent change in the third formant, a change which was most evident in the body orientation measurements, and to a lesser extent in the head …
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Using Eye Movements to Establish a Normative Database of Control Participants Across the Lifespan
… upon a visual colour instruction. Participant head position was stabilized using a fixed head mount and participants sat in front of a computer screen to conduct the task. Our results show that individuals between 17 and 29 years of age outperformed younger and older participants by generating …
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Nutukusių asmenų laikysenos ir eisenos ypatumai /
… body weight to have postural problems such as: head position, increased cervical and lumbar lordosis, increased thoracic and sacral kyphosis. 2. Obese individuals often have gait problems such as: too small a stride length and too large a stride width.
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Effects of altered sensory input from the neck on cerebellar function, body schema and sensorimotor integration
… is critical for formulating the perception of head position relative to the body. Chronic alterations in afferent input from the neck may be studied in individuals with subclinical neck pain (SCNP), defined as non-severe recurrent neck pain lasting at least three months in the past year and …
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