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 473 for “"tilt"”.
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Sindrome Tilt: reporte de caso
… años con dolor de muñeca causado por síndrome de TILT manejado por el servicio de cirugía de mano del Hospital universitario mayor Méderi sede barrios unidos en el 2021, por medio de un reporte de caso en el cual se documenta un cuadro clínico de dolor crónico de más de 7 años de evolución, sin …
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Tilt-Compensated Magnetic Field Sensor
Motion and tilt have long hindered the accuracy, reliability, and response of magnetic detection systems. Perturbations in the magnetic field reading resulting from motion cause degradation of the output signal, compromising the performance and reliability of the magnetometer system. The purpose of …
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Tilt bed testing of the subjective horizontal
… organs, which could be measured on Earth using a tilting bed. Mittelstaedt showed that when individual subjects were asked to repeatedly position themselves to the gravireceptive subjective horizontal, individuals showed a small (<5 deg.) but consistent head up or head down bias that remained …
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Planitia : a real-time fuzzy-logic tilt controller
… readings the system would adjust the angle of tilt of this platform in real-time. Effectively the target result would be that the object on the platform does not experience any horizontal acceleration even when the platform is in motion. Practically, this should allow say a glass to remain on …
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Analytical investigation of the tilt rotor whirl instability
This dissertation presents a generalized analytical study of the whirl instability of a rotating propeller or rotor system. The mathematical model consists of rigid members with three degrees-of-freedom at the wing root and the wing-drive-shaft joints. In addition, each blade has lagging and …
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Tilt simulation : virtual reality based upper extremity stroke rehabilitation
… design and features of this latest simulation - Tilt. Tilt uses physics to develop an engaging training experience and provides a realistic approach to virtual reality simulation including friction, elasticity and collisions between objects. It is designed to train upper extremity function as a …
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Earthquake-induced tilt of retaining wall with saturated backfill
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1993.
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Analysis, design, and construction of tilt-up wall panel
The idea of tilt-up construction started in America in the early I900’s. In the beginning, this technique was mainly used on structures such as industrial warehouses and factories. However, recent developments and improvements in tilt-up construction technique and accessories have enabled this …
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Numerical modelling of the tilt casting processes of titanium alumindes
… the modelling and optimisation of the tilt casting process of Titanium Aluminides (TiAl). This study is carried out in parallel with the experimental research undertaken in IRC at the University of Birmingham. They propose to use tilt casting inside a vacuum chamber and attempt to …
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Corrosion of Some Tilt and Twist Boundaries in Aluminum Bicrystals
Made available in DSpace on 2014-12-10T17:57:41Z (GMT). No. of bitstreams: 1 6507066.pdf: 1789755 bytes, checksum: 12ecbb6a4bc6615e0d30c9759c159bfc (MD5) Previous issue date: 1965
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Design and fabrication of active tilt-stage for laser rangefinder
A design for an active tilt-stage that will carry the UTM-30LX, a laser rangefinder sensor (LRF) that is fabricated to scan in a 2-D plane, was determined by analysis. The LRF will be mounted with the tilt-stage on the PIONEER 3-AT (P3-AT), a robot designed to be mobile in rough-terrains, such that …
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Computer Vision Tracking of sUAS From a Pan/Tilt Platform
… off-the-shelf (COTS) cameras and a pan-tilt unit (PTU), along with custom developed code, is developed for the purpose of continuously pointing at and tracking the motion of a sUAS in flight. Mixtures of Gaussians Background Modeling (MOGBM) is used to track the motion of the sUAS in …
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Determination of the Functional Relationship Between Lumbar Lordosis and Pelvic Tilt
… lumbar lordosis by manipulating their pelvic tilt and torso alignment to maintain a normal plumbline. To investigate this hypothesis 10 healthy subjects (6 female, 4 male), aged 18-35 years, with no back, spine, or lower extremity injuries or surgeries were evaluated during static stance, …
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Autonomous Autorotation of a Tilt-Rotor Aircraft Using Model Predictive Control
<p>Tilt rotor vehicles are governed by FAA laws also used for conventional helicopters, which require autorotational maneuvering and landing given a total power failure. With low inertia rotors and high disk loading of tilt rotor vehicles, this already difficult task becomes significantly more …
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The Effect of Hamstring Lengthening on Pelvic Tilt and Lumbar Lordosis
… knee flexion, hip extension and posterior pelvic tilt. Posterior pelvic tilt causes the lumbar spine to flatten (hypolordosis) which places pressure on the anterior structures of the spine, including the intervertebral disc. This increased pressure may predispose individuals to disc degeneration …
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Examination of the Anterior Drawer and Talar Tilt Manual Stress Tests
… The Anterior Drawer Test (ADT) and the Talar Tilt (TT) are two tests used at the ankle to determine mechanical instability. Upon review of previous research there is a paucity of studies that rate the reliability of the ADT and TT. Research has shown that manual stress tests at the knee and …
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A tilt rotor UAV for long endurance operations in remote environments
… preliminary vehicle and controller design for a tiltrotor UAV that achieves long endurance operation by combining autonomous takeoff and landing capabilities with a solar energy harvesting system. Mass and power models are developed for the proposed vehicle configuration to provide mission …
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Virtual pan-tilt-zoom for a wide-area-video surveillance system
… a surveillance technique called Virtual Pan-Tilt-Zoom. Virtual Pan-Tilt-Zoom provides the same functional properties as a mechanical pan-tilt-zoom setup, but it does not suffer from the physical limitations presented by a mechanical setup. A video system using Virtual Pan-Tilt-Zoom would have …
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Design and testing of a pan-tilt mechanism for severe environments
U.S. Navy ships have non-rotating radar and electronic warfare devices installed, which are often supported and trained by two-axis gimbals. In current shipboard solutions the payloads are often placed on a platform above the gimbal drive train, which results in high moment loads on drive …
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