Reliability of a Shuttle reaction timer

Reaction, movement, and task times refer to the times needed to initially respond to a stimulus, make the specific movement, and complete the entire task. This study evaluated the reliability of a simple reaction timer designed to mimic a Space Shuttle task (turning on an overhead switch)

The Forgotten Politicians: Court Clerks

Although court clerks occupy a strategic position in county government, they have not been examined in detail. Their crucial role in the budgetary process, coupled with the vast panoply of duties assigned them, elevates their office to semi-sovereign status within the county. The state of Florida was chosen as a focus for an indepth study of the clerk\u27s office. The study revealed that despite the fact that clerks are well-educated, they are relatively unknowledgeable about modern technology and techniques to assist in the operation and management of their offices. This, coupled with the county court clerk\u27s conservative nature, accounts in part for why states have been victims of archaic and outdated court systems and procedures

Estimating individual health-related quality of life changes in low back pain patients.

BACKGROUND: There is a need to evaluate different options for estimating individual change in health-related quality of life for patients with low back pain. METHODS: Secondary analysis of data collected at baseline and 6 weeks later in a randomized trial of 749 adults with low back pain receiving usual medical care (UMC) or UMC plus chiropractic care at a small hospital at a military training site or two large military medical centers. The mean age was 31; 76% were male and 67% were White. The study participants completed the Patient-Reported Outcomes Measurement Information System (PROMIS®)-29 v 1.0 physical function, pain interference, pain intensity, fatigue, sleep disturbance, depression, anxiety, satisfaction with participation in social roles, physical summary, and mental health summary scores (T-scored with mean = 50 and standard deviation (SD) = 10 in the U.S. general population). RESULTS: Reliability estimates at the baseline ranged from 0.700 to 0.969. Six-week test-retest intraclass correlation estimates were substantially lower than these estimates: the median test-retest intraclass correlation for the two-way mixed-effects model was 0. 532. Restricting the test-retest reliability estimates to the subset who reported they were about the same as at baseline on a retrospective rating of change item increased the median test-retest reliability to 0.686. The amount of individual change that was statistically significant varied by how reliability was estimated, and which SD was used. The smallest change needed was found when internal consistency reliability and the SD at baseline were used. When these values were used, the amount of change needed to be statistically significant (p < .05) at the individual level ranged from 3.33 (mental health summary scale) to 12.30 (pain intensity item) T-score points. CONCLUSIONS: We recommend that in research studies estimates of the magnitude of individual change needed for statistical significance be provided for multiple reliability and standard deviation estimates. Whenever possible, patients should be classified based on whether they 1) improved significantly and perceived they got better, 2) improved significantly but did not perceive they were better, 3) did not improve significantly but felt they got better, or 4) did not improve significantly or report getting better

Design, Construction and Test Arrangement of a Fast-Cycling HTS Accelerator Magnet

Design, fabrication and assembly of a novel fast-cycling accelerator magnet is presented. A short-sample magnet is powered with a single-turn HTS cable capable to carry 80 kA current at 20 K and generate 1.75 T field in a 40 mm magnet gap. The applied conventional leads and the power supply, however, allow only for a sin-wave 24 kA, 20 Hz current limiting test magnet to a B-field of 0.5 T and to a maximum cycling rate of 20 T/s. The critical aspects of the cable construction and the splicing connection to the power leads are described. Tentative power losses of the proposed HTS accelerator magnet in a possible application for proton and muon accelerators are presented.Comment: 4 p. Presented at 23rd International Conference on Magnet Technology Conferenc

The Separate Spheres of Women and Science

Through the 19th century ideology of separate spheres, Frankenstein shows how the exclusion of women from science is detrimental to science and destructive to society.https://scholarworks.sjsu.edu/frankenstein200_posters/1001/thumbnail.jp

Record High Ramping Rates in HTS Based Super-conducting Accelerator Magnet

We report results of the experimental test of the High Temperature Superconductor based fast cycling prototype accelerator magnet capable to operate up to about 300 Tesla per second field ramping rate with some 0.5 T field in the magnet gap. The measured upper limit for the cryogenic cooling power required to support magnet conductor operation at high ramping rates indicates great potential for such types of magnets in rapid cycling synchrotrons for neutrino research or muon acceleration. The test magnet design, construction, and supporting cryogenic and power systems are briefly described. The magnet power test results are discussed in terms of a possible upgrade of this magnet design to 2 T field, a maximum feasible with superferric magnet.Comment: 4 pages, 10 figures; presented at the 27th International Conference on Magnet Technology (MT27, Fukuoka, Japan, November 15-19, 2021