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Physiological considerations suggest that the response of the vestibular system can be substantially modified during weightlessness and that such modifications affect susceptibility to motion sickness and to judgment of spatial localization. Evaluation of such effects requires measurement of responses to rotational accelerations before, during, and after exposure to conditions of prolonged zero-gravity. For this purpose, a precisely controlled rotating chair was designed, constructed, tested, and installed in the Skylab Orbital Workshop. The chair was used in three test modes to measure changes in the vestibular (balance) organs of the astronauts.
Thesis in short fiction written by a student in the UNT Honors College. Two short stories are included after a short introduction. The first, "Euston Station," deals with a man disappointed with his visit to England. The second, "The Master's Chair," features a priest falling in love with a woman and trying to impress her son.
Quantification of the biomechanical factors that underlie the inability to rise from a chair can help explain why this disability occurs and can aid in the design of chairs and of therapeutic intervention programs. Experimental data collected earlier from 17 young adult and two groups of elderly subjects, 23 healthy and 11 impaired, rising from a standard chair under controlled conditions were analyzed using a planar biomechanical model. The joint torque strength requirements and the location of the floor reaction force at liftoff from the seat in the different groups and under several conditions were calculated. Analyses were also made of how body configurations and the use of hand force affect these joint torques and reaction locations.In all three groups, the required torques at liftoff were modest compared to literature data on vol...
The purpose of this study was twofold. The first purpose was to survey chairs to describe their attitudes toward and knowledge about the continuous quality improvement (CQI) philosophy, determine why department implementation efforts were or were not undertaken, provide a self-assessment of CQI department implementation, and allow for the reporting of existing and planned implementation results. The second purpose was to examine chairs' CQI implementation strategies within their departments and to determine the achieved results. The Malcolm Baldrige National Quality Award Education Pilot Criteria were utilized as an assessment template to help achieve this twofold purpose.^ Focusing on four higher education institutions where efforts had been initiated to institutionalize the CQI process, a two-phase design was utilized, consisting ...
This research investigated the need, design, and evaluation of a product capable of providing support to forward-leaning postures. Due to the high occurrence of low-back pain in industry potentially due to workers performing their tasks while assuming forward-leaning postures, along with the biological plausibility of these postures causing low-back pain, the need was established for a product that provides forward-leaning support. An envelope was quantified, ranging from the 5th percentile female to the 95th percentile male, to establish the range of potential forward-leaning postures. The design of a Support-Arm for use with current ergonomic chairs was discussed and design feature specifications were then provided. A Latin Square statistical design was employed to evaluate a Support-Arm model alongside 8 other commonly used chairs ...
The compensation of a professor who is awarded an internal Canada Research Chair (CRC) increases by 6.3 percent on average in our sample. This gain is large initially but quickly erodes over CRC tenure. The gain is slightly larger for professors who change university to obtain a CRC Chair. Assuming that the CRC program has achieved its goal of attracting and retaining top talents, we infer that the compensation cost of doing so is modest. In addition, only a small fraction of the CRC grants have been passed through to professors as compensation increases. This is despite the fact that universities report spending more than half of the CRC grants on chairholder compensation.
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