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 13502 for “"contrast"”.
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Contrast
<p>This thesis will discuss the importance of contrast within a piece of artwork as well as a history and explanation of the other elements and principles of art. It is important for artists to understand the elements and principles to have a good base in creating artwork. This thesis will explore …
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CONTRAST-ENHANCED MAMMOGRAPHY: THE EMERGENT CONTRAST-ENHANCED BREAST IMAGING MODALITY
… if background parenchymal enhancement (BPE) on contrast-enhanced mammography (CEM), graded according to 2022 CEM-dedicated Breast Imaging Reporting and Data System (BI-RADS) lexicon, is associated with breast density, menstrual status, and age. Methods: This bi-centric retrospective analysis …
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Existing in contrast
In the act of building, man places himself between earth and sky. Where a wall is raised, a place becomes divided. Architecture occurs. One wall in one place begins to define three physical realities. The form and matter of a wall exist as one thing. Each side of the wall exists separately and face …
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Multi-contrast Photoacoustic Microscopy
… moderate imaging depth, excellent imaging contrast and functional imaging capability. Taking full advantage of this powerful weapon, we have investigated different anatomical, functional, flow dynamic and metabolic parameter measurements using photoacoustic microscopy. Specifically, …
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Unity Emerging from Contrast
Two architectural entities meet at a point in time, to form a simultaneous presence of both, habitation and expression. An architectural intervention in that sense is an evolutionary process in which ideas of different periods and languages are examined, translated and confronted. Even though …
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Contrast baths: A systematic review of the effects of contrast baths on edema
… evidence based research on the effectiveness of contrast baths as a treatment modality for edema management. Method. A search of several databases for research articles dating back 25 years. The American Occupational Therapy Association Guidelines for Systematic Review was used to guide the …
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Small Gadolinium Oxide Contrast Agents: A Novel Class of Multi-Modality Contrast and Therapeutic Agents
… characterization of gadolinium oxide particulate contrast agents as a novel class of prototype multi-modality contrast agent. In chapter 2 an analysis of the MR contrast enhancement and X-ray attenuation properties of small particulate gadolinium oxide and gadolinium oxide albumin microspheres for …
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Contrast: Unifying the Nuts and Bolts
… is full of extremes and I enjoy studying the contrasts of these extremes. I am influenced by the soft and subtle, as well as the rough and unrefined. From printing on the most delicate of papers, to constructing objects from scrap metal and reclaimed barn wood, the pieces I produce are studies …
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Alignment of contrast enhanced medical images
… of medical images in which there are multiple contrast variations is difficult. The reason for this is that the popularmeasures of image similarity used to drive the alignment procedure do not separate the influence of intensity variation due to image feature motion and intensity variation due …
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Functionalism, Lexical Contrast And Sound Change
… sound changes that result in the loss of a sound contrast in the speaker's grammar, it is not true for other common types of sound change. I motivate this hypothesis by showing that lexical contrast is a factor that influences early phonological development.
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Self-supervised multi-contrast MRI denoising
… in medical diagnostics, offering essential multi-contrast imaging capabilities. However, MRI quality is often compromised by inherent noise, which can hinder both image clarity and analytical accuracy. This thesis presents the "Corruption2Self" (C2S) framework, a self-supervised method for …
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High-index-contrast electromechanical optical switches
… optical switches are based on high-index-contrast waveguide optics that is integrated with electrostatic parallel plate actuators on submicron scales. High-index-contrast waveguides are attractive due to their reduced bending radius and low in-plane scattering and optical loss. These …
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Dynamic contrast sensitivity: methods and measurements
… At each of two different testing sessions, the contrast sensitivities of 60 undergraduate psychology majors were measured at a static, 25 deg/sec, and 50 deg/sec target movement condition. The results indicate that as target velocity was increased, contrast sensitivity decreased at middle and …
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Accomodation with displays having color contrast
… good predictor of image quality where only color contrast exists between foreground and surround. Task performance was highly correlated with effective contrast between the target and background as quantified by uniform color space modeling.
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Gallery design focused on contrast & dynamism
… of this study is, first of all, to establish contrast and dynamism as a method to figure out the static and uniform experience through space. Second, through a study of books and an analysis of previous works of other architects, it will give a direction on how the actual design would be used …
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Comparative imaging of surgical small intestinal disease in dogs: evaluation of pre-operative contrast-enhanced ultrasound, intra-operative contrast-enhanced ultrasound, and triple-phase contrast-enhanced computed tomography
… revision, and lead to sepsis or death. Currently contrast-enhanced computed tomography (CT) is the standard of care for evaluating ischemic lesions of the bowel in humans. Contrast-enhanced ultrasound (CEUS) is an alternative method for evaluating tissue perfusion whose utility for evaluation of …
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Developing a Microbubble-based Contrast Agent for X-ray Phase Contrast Imaging to Detect Neovasculature in Breast Cancer
X-ray phase contrast imaging (XPC) generates contrast from refraction and scattering of X-rays, unlike absorption in conventional radiology. This technique greatly improves the sharpness of boundaries and reveals micro-structured tissues that are not easily detected by conventional absorption-based …
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Behavioral Contrast and Alternative Response Key Availability
… stimuli on the production of behavioral contrast was examined. Procedure. Pigeons in Group 1 were exposed to a two-key procedure in which one key served as the operandum and the other key signaled scheduled consequences (see Keller,1974). The pigeons in Group 2 were exposed to the same …
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