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 13 of 13 for “"conspicuity"”.
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Improvement of Conspicuity for Trailblazing Signs
… letters. Study 2 was an on-road field study of conspicuity, conducted using an instrumented vehicle through a construction zone-related detour, and a survey questionnaire. The findings indicated that use of a color combination other than traditional black on orange will improve driver …
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Bicycle Travel, Injury Risk and Conspicuity. Application of Epidemiological Methods
… to detect the cyclist in time, suggesting that conspicuity may be a contributing factor. Conspicuity can be categorised into physical conspicuity and attention conspicuity. The former may be enhanced by using conspicuity aids whereas the latter may be improved through the safety in numbers …
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On-Road Investigation of Fluorescent Sign Colors to Improve Conspicuity
… of fluorescent colors on signs improves their conspicuity. The purpose of Phase III was to evaluate fluorescent sign color combinations for incident management trailblazing purposes. This study consisted of an on-road investigation using an instrumented vehicle over a 12.2-mile route in urban …
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Visual performance in the mesopic range
… and luminance contrast to a measure of stimulus conspicuity and to visual search time. The conspicuity of a stimulus defined by colour and luminance contrast was defined as the value of achromatic contrast of a similar stimulus with an equal perceived conspicuity. An empirical model was developed …
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Applied Error Related Negativity: Single Electrode Electroencephalography in Complex Visual Stimuli
… ERN in a complex visual search task: motorcycle conspicuity. Drivers regularly fail to see motorcycles, with tragic results. To reproduce the issue in the lab, static pictures of traffic were presented, either including or not including motorcycles. A standard flanker letter task replicated from …
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An Investigation of the Effectiveness of A Strobe Light As An Imminent Rear Warning Signal
… in many transportation applications to increase conspicuity. It was hoped that a strobe signal could also be applied to more effectively warn distracted drivers of an unexpected rear end conflict. This "proof of concept study" used a 2 x 2 between-subjects design using thirty-three subjects (16 …
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Robert Lowth's Hebraic Sublime and the "Ample Field of Poetry"
… Lowth argues from the Hebrew Scriptures that the conspicuity of the rhetorical construction is key to the excitation of the passions that follows the sublime encounter. Seeking to contextualize Lowth’s theorizing within intersecting critical, social and literary discourses, I investigate Lowth’s …
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The impact of simulated motion blur on breast cancer detection performance in full field digital mammography (FFDM)
… of malignant masses was assessed using a conspicuity index; for microcalcifications, a new novel metric, known as dispersion index, was used. Results: wJAFROC analysis found a statistically significant difference in lesion detection performance for both masses (F (2,22) = 6.01, P=0.0084) …
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Technical Development of Hyperpolarized [1-13C]Pyruvate Imaging for Clinical Translation
… genuinely poor, compromising the overall image conspicuity and limiting accurate assessment of the hyperpolarized 13C metabolites. The PA was validated in simulation and phantom studies, and was further applied to low-resolution human brain metabolite maps of hyperpolarized [1-13C]pyruvate and …
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Functional Magnetic Resonance Imaging of Breast Cancer
… qualitative image quality metrics such as lesion conspicuity and diagnostic confidence, increasing the clinical utility of DWI. This thesis investigates the use of dynamic contrast-enhanced MRI (DCE-MRI) in the detection of breast cancer and the prediction of pCR. Abbreviated MRI (ABB-MRI) …
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A comparative study evaluating the performance of diagnostic radiography units and protocols for paediatric and adult chest radiography examinations
… ratios (SNR), contrast to noise ratios (CNR) and conspicuity indices (CI) were calculated for all phantom image data in this study. Incident air karma (IAK) was measured using a solid-state dosimeter. Results: Regarding the validation of utilising LCD detectability for evaluating visual IQ and LV, …