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 344 for “"Non-contact"”.
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Non-contact ultrasound
… design, development, and evaluation of two novel non-contact ultrasound imaging methods: immersion ultrasound and optical ultrasound. Immersion ultrasound utilizes traditional piezoelectric elements in a tomographic framework to develop new algorithms and acquisition methods for quantification of …
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Non-contact surface inspection
This thesis describes the development of a non-contact inspection system, used in providing a comparative method for gauging a surface. The purpose of this system is not to measure the 3-D shape of a part. The volume difference between the part to be inspected and a master, is merely part of the …
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Non-Contact Sleep Monitoring
"The road ahead for preventive medicine seems clear. It is the delivery of high quality, personalised (as opposed to depersonalised) comprehensive medical care to all." Burney, Steiger, and Georges (1964) This world's population is ageing, and this is set to intensify over the next forty years. …
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Non-Contact Sensing for Protected Cropping
… This thesis explores innovative, non-contact sensing methodologies to address key challenges in plant water management and crop quality assessment within protected cropping. By leveraging advancements in millimeter-wave (mmWave) radar and near-infrared (NIR) spectroscopy, this work …
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Non-contact defect detection in silicon
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1984.
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Kiosks for Non-Contact Vital Sign Detection
… a modular hardware and software platform for contact-less vital sign detection. The kiosk is intended collect users’ vital sign data to track changes over time and try to identify periods of illness. It is modular and transportable, able to be deployed and moved quickly, and reconfigured with …
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Horizontal non-contact slumping of flat glass
… of M. Akilian and A. Husseini on developing a noncontact glass slumping/shaping process. The shift from vertical slumping to horizontal slumping is implemented and various technologies required for the horizontal slumping process are developed. In the horizontal slumping process, a thin sheet …
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Non-Contact Lap Splices in Dissimilar Concretes
Non-contact lap splices placed within a single concrete placement are often used and have been studied in previous research projects. However, non-contact lap splices used with each bar in a different concrete placement such that there is a cold joint between the bars, have not been investigated. …
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DEVELOPMENT OF NON-CONTACT MICROSPHERE CONFOCAL SCANNING MICROSCOPE
… In this thesis, a novel technique, called the non-contact microsphere confocal scanning microscope, is proposed and developed. This setup can enhance the lateral resolution to 110 nm, the axial resolution to 100nm and image contrast to 71%, while retaining the key features of the conventional …
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Quantum non-contact friction in resonant dielectric media
We compute the non-contact friction force induced between two isotropic planar dielectric slabs which obey a plasma model dielectric function using scalar electromagnetism. All computations are carried out at zero temperature. Strong constraints on the integration parameters which define the …
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Development of non-contact measurements for carrier recombination lifetime
Includes bibliographical references (pages 108-112).
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Non-contact voltage monitoring of three-phase power cables
Non-contact voltage monitoring involves continuously measuring conductor voltages without contacting the conductors. This thesis explores several methods of using parasitic capacitive coupling to monitor AC voltages in three-phase power cables. Using an existing sensor architecture, three-phase …
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Mapping bulk electrical properties with non-contact RF measurements
… of the patient's body with both MR and non-MR techniques. Such mapping has direct applications for medical imaging and SAR calculation.
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Inferring Microstructural Change via Non-Contact Ultrasonic Property Measurements
… demands, these RPVs need to be evaluated with non-destructive methods due to the limited number of representative RPV coupons that exist for material evaluation via destructive tests. Transient Grating Spectroscopy (TGS) has been proposed as a non-destructive technique that can evaluate …
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Non-contact Methods for Detecting Hot-mix Asphalt Nonuniformity
Segregation, or non-uniformity, in Hot Mix Asphalt (HMA) induces accelerated pavement distress(es) that can reduce a pavement's service life up to 50%. Quality Assurance procedures should detect and quantify the presence of this problem in newly constructed pavements. Current practices are usually …
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An investigation of remote non-contact photoplethysmography and pulse oximetry
This thesis presents an investigation of non-contact remote pulse oximetry and photoplethysmography. A thorough description is given of the technique of pulse oximetry along with some physiological effects and some characteristics of light-tissue interaction that underlie pulse oximetry. A device …
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Non-Contact NDT of Concrete Structures Using Air -Coupled Sensors
The second application is air-coupled impact-echo. Two reinforced concrete slabs containing different types of defects were inspected using an air-coupled impact test testing scheme. 2-D scanning impact-echo tests were conducted over the slab containing voids and delaminations. The 2-D scanning …
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The development of a non-contact co-ordinate measurement machine
… at the University of Cape Town have developed a non-contact co-ordinate measurement machine in a project called MILIMAP. The project had the following objectives : 1. To determine unique surface co-ordinates for continuous, complex objects with submillimetre accuracy. 2. The representation of the …
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