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Full-Text Articles in Operations Research, Systems Engineering and Industrial Engineering
Quantitative Analyses Of Acceptable Noise Level For Air Conduction Listening, Bankole K. Fasanya
Quantitative Analyses Of Acceptable Noise Level For Air Conduction Listening, Bankole K. Fasanya
Dissertations
This study was conducted to develop quantitative models for Acceptable Noise Level (ANL) under air conduction (AC) listening conditions. Experimental results on the effects of frequency bandwidths on ANL under two listening conditions involving earphones and loudspeaker (sound field) with high and low frequencies and babble noise and white noise revealed: (a) there are statistically significant interactions among the background noise types, the background noise frequency bandwidths and signal source; (b) background noise and noise frequency bandwidths have effects on listener discriminability bias toward the noise and the signal intensity; (c) different listening conditions had different ANL thresholds; and (d) …
Assessment Of Neck And Shoulder Muscle Coactivations And The Effect On The Musculoskeletal System, Regina Derria Pope-Ford
Assessment Of Neck And Shoulder Muscle Coactivations And The Effect On The Musculoskeletal System, Regina Derria Pope-Ford
Dissertations
Musculoskeletal disorders (MSDs) constitute one of the most important occupational health issues in healthcare workers who are susceptible to upper extremity disorders. Yet MSDs in the healthcare professions have not been studied extensively beyond the lower back. The focus population for this research is the field of dentistry where neck and shoulder disorders have been documented to have a high prevalence. Though quantitative data has been collected, many prior studies have focused on self-reported information. The goal of this research is to provide insight into the inter-relationship of muscles in the upper extremities. One way to accomplish this is to …
A Mathematical Modeling Framework For Phlebotomist Scheduling And Blood Draw Assignments In Laboratory Medicine, Laquanda T. Leaven
A Mathematical Modeling Framework For Phlebotomist Scheduling And Blood Draw Assignments In Laboratory Medicine, Laquanda T. Leaven
Dissertations
Laboratory services in healthcare delivery systems play a vital role in inpatient care. Studies have shown that laboratory data affects approximately 65% of the most critical decisions on admission, discharge, and medication. Laboratory testing accounts for approximately 10% of hospital billing. Reducing laboratory costs would contribute to reducing total healthcare cost, which is one of the major goals for the U.S. healthcare delivery system. This research focuses on improving the performance of the hospital laboratory in a large hospital system. The intention of this study is to identify and then optimize the most critical stage to improve the entire laboratory …