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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 209 for “"magnification"”.
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Video Magnification for Structural Analysis Testing
… a stabilization algorithm and permitting the magnification filter to operate on multiple frequency ranges to enable visualization of the natural frequencies of structures in the field. To implement multiple frequency ranges a new function was developed to implement the magnification filter at …
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Colour Morphology with Application to Image Magnification
Mathematische morfologie is een theorie voor de analyse van ruimtelijke structuren, gebaseerd op verzamelingenleer en het begrip verschuiving. In de jaren zestig voerden G. Matheron en J. Serra, beiden geïnspireerd door de studie naar de geometrische vorm van poreus medium, het begrip mathematische …
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High-Magnification Digital Staining of FTIR Spectroscopic Images
… staining techniques that can be applied to high-magnification samples collected using Fourier-transform infrared (FTIR) and discrete-frequency infrared (DFIR) images.
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Mantis: A Screen Magnification Tool for Diagram Traversal
… can be difficult for people who use screen magnification to navigate. A sense of spatial context and of the diagram’s overall structure is oftentimes lost, as magnifiers can only magnify a fraction of the screen at any given time. So, while sighted users have both clarity and full context …
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Ecological Magnification of Persistent Organochlorine Pesticides in an Illinois Watershed
The concentration and ecological magnification of selected organochlorine pesticides in aquatic organisms of the Lake Decatur watershed in central Illinois were determined in this study. A review of the use of persistent organochlorine pesticides in the United States and the study area is provided. …
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Applying video magnification techniques to the visualization of blood flow
In this thesis, we investigate the use of video magnification for the visualization and assessment of blood flow. We address the challenge of low signal-to-noise ratios in video magnification by modeling the problem and developing an algorithm for measuring the SNR in the context of video …
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Optimum magnification and perspective for non-single-lens-reflex camera systems
… of this investigation was to determine how magnification and perspective alter a person's judgements of pleasantness for images recorded in photographic prints. The magnification and perspective of four scenes were varied by recording each scene with each of six camera-lens focal lengths (28 …
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The Effect of Magnification Loupes on Posture During Instrumentation by Dental Hygienists
… study was to determine the effects of dental magnification loupes on posture during instrumentation. Methods: A convenience sample of twenty-seven righthanded dental hygienists with no history of injuries or disabilities of the head, neck, and trunk regions was enrolled. Baseline posture …
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Characterization of the physical properties of massive dark matter halos from magnification bias
Esta tesis explora en profundidad el sesgo de magnificación utilizando galaxias submilimétricas (SMGs, por sus siglas en inglés) como fuentes de fondo para estudiar los perfiles de densidad de masa de diversos tipos de lentes, incluyendo cuásares, galaxias y cúmulos de galaxias. La metodología se …
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Aircraft Pilot Performance as a Function of the Extent and Magnification of the Visible Horizon
Made available in DSpace on 2014-12-03T23:50:16Z (GMT). No. of bitstreams: 1 0002223.pdf: 4569806 bytes, checksum: 571539a1c4edfcba795cff73de67de75 (MD5) Previous issue date: 1950
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FRACTALS IN PUPILLARY OSCILLATION PATTERNS: FROM GRAY IMAGES TO JACKSON POLLOCK PAINTINGS
… are structures which are self-similar at varying magnification and can be either statistical (meaning they are not identical when magnification varies but are self-similar by some statistical measure) or mathematical (the structure remains identical as magnification varies) (Fairbanks & Taylor, …
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Generalized Constrained Interpolation
… in digital image processing, especially magnification. Many different approaches to interpolation specific to magnification have been developed in an effort to overcome the shortcomings of bilinear and bicubic interpolation. One of these approaches, Constraint-Based Interpolation, …
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Preprocessing Realistic Video for Contactless Heart rate Monitoring Using Video Amplification Methodologies
… we improved the outcomes of Eulerian Video Magnification in real life scenarios. The proposed system minimizes or eliminates the motion constrained effect. The system will preprocess the video through multi staged tasks using subject targeting and stabilizing. The resulted prepared video …
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Comparison of P-Delta Analyses of Plane Frames Using Commercial Structural Analysis Programs and Current AISC Design Specifications
… design specification, the AISC LRFD moment magnification method. For this research, the second-order moments for ten commonly designed frames were compared. An overview of various second-order analysis procedures is presented first. The solution procedure utilized by each computer program …
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Image analysis of Bacillus thuringiensis
… counting chamber (Webber Scientific) at 200x magnification under dark field illumination. It was found that at this magnification the problem of out of focus cells was eliminated. The use of a thick coverslip, which reduces variability in slide preparation, was also possible at …
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Image segmentation and object classification for automatic detection of tuberculosis in sputum smears
… using a microscope with 100x objective lens magnification. The bacillus identification route established for the 100x images, was applied to images obtained using a microscope with 20x objective lens magnification. In addition, one-class classification was applied the 100x images. A …
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Size is everything : universal features of quasar microlensing with extended sources
… and a Shakura-Sunyaev thermal model) with two magnification patterns in the source plane, one with convergence [kappa] = 0.4 and shear [gamma] = 0 (positive parity), and the other with [kappa]=[gamma]= 0.6 (negative parity). By looking at magnification histograms of the convolutions and using …
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The Identification of Composite Resin Restorations within Natural Teeth
… was to assess the accuracy of normal vision, magnification loupes and UVL for identifying composite resin restorations. Forty one composite resin restorations were placed in 113 natural teeth mounted in four sets of models. These four sets were examined by 20 dental volunteers using the three …
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Optimising image quality and radiation dose with a focus on geometry and attenuation
… The first paper explores the impact of SID and magnification on image quality and radiation dose for AP pelvis on the x-ray tabletop. The next two papers explore SID for AP pelvis trolley work. The additional geometry and attenuation considerations from the mattresses and image receptor holder, …
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