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.
Results
Showing 1 to 20 of 534 for “"Scanner"”.
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Design of a programmable optical scanner
Thesis. 1976. B.S.--Massachusetts Institute of Technology. Dept. of Mechanical Engineering.
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An electro-mechanical acoustic imaging scanner assembly.
The design of "a combined electro-mechanical acoustic image scanning assembly is described. Various acoustic imaging system techniques have demonstrated an ability to form underwater images at distances greater than those obtained by optical means. The scanning assembly -utilizes a sixteen element …
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Gamma scanner for MITR II fuel plates.
Massachusetts Institute of Technology. Dept. of Nuclear Engineering. Thesis. 1974. M.S.
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Adding liveness detection to the hand geometry scanner
… a feature to be added to the Hand Geometry Scanner in order to detect vitality in the hand, reducing spoofing possibilities.;This thesis demonstrates how the Hand Reader was successfully spoofed and shows the implementation of the live detection feature through an inexpensive but efficient …
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Design of a single element 3D ultrasound scanner
Over the past decade, substantial effort has been directed toward developing ultrasonic systems for medical imaging. With advances in computational power, previously theorized scanning methods such as ultrasound tomography can now be realized. This thesis presents the design, error analysis, and …
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Developing an Optical Scanner Card for Computerized Football Scouting
… purpose of this study is to develop an optical scanner scouting card to use in conjunction with the computer for football scouting.</p>
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Digital ear scanner : measuring the compliance of the ear
… industry is ready to take advantage of a digital scanner. A one dimensional calibration was made, and qualitative 3-D data is shown. The imaging technique was implemented with much lower cost equipment then would be needed by other 3-D techniques such as interferometry. A technique for the …
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Experiments and simulations on a metamaterial based ultrasonic scanner
… to identify individuals. Ultrasonic fingerprint scanners use acoustic waves to obtain the fingerprint image and their performance is invariant to the surface conditions typically found on the finger surface due the ability of ultrasound to penetrate into sub-surfaces. This makes ultrasonic …
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The design and application of a personal printer/scanner system
… are derived. Both conventional printers and scanners contain mechanisms for moving either documents, sensors or mirrors. Combining a printer and a scanner into a single device offers a potential reduction in cost because the printer's mechanisms then serve a double duty. A scanner makes …
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Gas electron multipliers and a scanner for automated quality control
… To improve foil quality control, an automated scanner has been constructed to optically examine every hole in a GEM. The machine can measure each hole's outer copper diameter and inner Kapton diameter and locate and geometrically classify any foil imperfections. The scanner has been used to …
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An emittance scanner for high-intensity, low-energy ion beams
… assembling, and commissioning an emittance scanner. The main challenges I faced were the high-intensity of the beam and a need for high precision. I designed an emittance scanner using CAD software. Its parts were then machined in MIT's Central Machine Shop and subsequently built and …
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Modeling Forest Canopy Distribution from Ground-Based Laser Scanner Data
… available, tripod mounted, ground-based laser scanner was used to assess forest canopies and measure individual tree parameters. The instrument is comparable to scanning airborne light detection and ranging (lidar) technology but gathers data at higher resolution over a more limited scale. The …
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Quantification of bone using a 3.0 tesla clinical magnetic resonance scanner
… in this thesis was to use the clinical 3.0 T MR scanner to acquire data from bone and bone marrow for identification of structural and chemical properties and to use those features to identify differences in bone strength and condition. The volunteers in this thesis were part of the high bone …
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UBV photometry of close visual double stars using an area scanner
A computer-controlled area scanner designed for use on close visual double stars is described. Techniques used in making observations and in subsequent reduction of the data are given. Problems encountered are discussed. Magnitude differences and magnitudes and colours of components are given for …
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Automated precision three-axis scanner and velocity sensor for laser dermatology
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1999.
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Deep Learning Models of Scanner/Vision Tunnel Performance in Sortation Subsystems
… an end-to-end process and tool to deep-dive scanner issues at Amazon’s sorter sites, allowing us to categorize no-reads into operational issues or actual equipment issues. Our tool sends no-read scanner images to a separate Amazon Web Services (AWS) server and post-processes them through …
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Scan Iceland - Vᛟlva : Architecture and Implementation of a Continuous National Network Scanner
… Völva, a national-scale network exposure scanner designed to map and monitor Iceland's public IPv4 address space. Völva performs continuous, ethical reconnaissance by discovering live hosts, conducting horizontal TCP port scans, and summarising service metadata. It is built to operate …
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Single-sided magnetic nanoparticles imaging scanner for early detection of breast cancer
… the basis of magnetic particle imaging (MPI) scanners. Previous scanner designs employ Helmholtz coil arrangement which has low sensitivity and high cost of fabrication. Furthermore, the scanners have long signal acquisition time and high memory requirement. This research focuses on developing …
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The Creation of Cargo Scanner Software to Improve the Container Packing Process
Dr. Joel Henry was tasked under a research and development contract with the DPRA to create a computer program that, when given a list of cargo items and a list of containers, would approximate the number of containers required to pack the items and determine a packing order for the cargo items. …
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