Written, oral, and practical flight tests, along with challenging flying tasks, place pilot trainees in stressful situations. The initial goals of this research were to determine assessment tools for identifying pilot trainees who might perform poorly in stressful flight testing environments, and measure the efficacy of a test anxiety (TA) workshop on anxiety levels and Federal Aviation Administration (FAA) knowledge assessments of pilot trainees. The researchers determined that: Scholastic Achievement Test (SAT) scores marginally predict facilitating anxiety levels, and FAA knowledge tests, taken in authentic testing environments, correlate significantly with debilitating anxiety, facilitating anxiety, and FAA exam scores. The researchers recommend continuing longitudinal assessment of freshman flight students that potentially links anxiety and performance on low-risk assessments with these measures on higher-risk practical flight tests. Further study is needed to determine if a more intense anxiety treatment can lower debilitating anxiety, raise facilitating anxiety, or improve performance on FAA exams.
Abstract. Frequency Domain (FD) fluorimetry, capitalizes on the frequency response function of a fluorophore and offers independence from light scatter and excitation/emission intensity variations in order to extract the sample's fluorescent lifetime. Mercury vapor lamps, a common source of industrial facility lighting, emit radiation that overlaps the UV/blue absorption spectrum of many fluorophores and may be used as an efficient and portable excitation source. The AC power modulation of mercury vapor lamps modulates the lamp's intensity at 120 Hz (in the United States) and higher harmonics. The fluorescent lifetimes for 3 different materials (willemite, uranium doped glass and U 3 O 8 ) are measured with conventional techniques and compared with the FD technique using the power harmonics from a mercury vapor lamp. The mercury lamp measurements agree to within 25% of the conventional methods.
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