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Operations Research, Systems Engineering and Industrial Engineering Commons™
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- Acceptable Noise Level (ANL) (1)
- Brain Activity (1)
- Complex Adaptive Systems (1)
- Electromyography (1)
- Excavation Work (1)
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- Geospatial Intelligence (1)
- Healthcare Delivery System (1)
- Human Performance (1)
- Human-Machine Interface (HMI) (1)
- Hydraulic Excavator (1)
- Job Performance (1)
- Laboratory Testing (1)
- Modeling Decision Making (1)
- Musculoskeletal Disorders (1)
- Neuroscience (1)
- Occupational Health Issues (1)
- Phlebotomist (1)
- Psychophysical Factors (1)
- Pupil Dilation (1)
- Satellite (1)
- Signal and Noise Level (1)
- Trauma Center (1)
- Virtual Simulation (1)
- Visual Analytic Cognitive Model (1)
- Visual Fatigue (1)
Articles 1 - 7 of 7
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) …
A Neurophysiologic Study Of Visual Fatigue In Stereoscopic Related Displays, Hanniebey Dolphyne Nutung-Wiyor
A Neurophysiologic Study Of Visual Fatigue In Stereoscopic Related Displays, Hanniebey Dolphyne Nutung-Wiyor
Dissertations
Two tasks were investigated in this study. The first study investigated the effects of alignment display errors on visual fatigue. The experiment revealed the following conclusive results: First, EEG data suggested the possibility of cognitively-induced time compensation changes due to a corresponding effect in real-time brain activity by the eyes trying to compensate for the alignment. The magnification difference error showed more significant effects on all EEG band waves, which were indications of likely visual fatigue as shown by the prevalence of simulator sickness questionnaire (SSQ) increases across all task levels. Vertical shift errors were observed to be prevalent in …
A Decision Support System For The Intelligence Satellite Analyst, Gi Yeon Park
A Decision Support System For The Intelligence Satellite Analyst, Gi Yeon Park
Dissertations
The study developed a decision support system known as Visual Analytic Cognitive Model (VACOM) to support the Intelligence Analyst (IA) in satellite information processing task within a Geospatial Intelligence (GEOINT) domain. As a visual analytics, VACOM contains the image processing algorithms, a cognitive network of the IA mental model, and a Bayesian belief model for satellite information processing. A cognitive analysis tool helps to identify eight knowledge levels in a satellite information processing. These are, spatial, prototypical, contextual, temporal, semantic, pragmatic, intentional, and inferential knowledge levels, respectively. A cognitive network was developed for each knowledge level with data input from …
Modeling Decision Making In Trauma Centers From The Standpoint Of Complex Adaptive Systems, Castanon De Policarpo
Modeling Decision Making In Trauma Centers From The Standpoint Of Complex Adaptive Systems, Castanon De Policarpo
Dissertations
This research examines complex clinical decision-making processes in trauma center units of hospitals in terms of the impact of complexity on the medical team involved in the trauma event. The science of complex adaptive systems together with human judgment theories provide important concepts and tools for responding to health care challenges in this century and beyond. Clinical decision-makers in trauma centers are placed in urgent and anxious situations that are increasingly complex, making decision-making and problem-solving processes multifaceted. Under stressful circumstances, physicians must derive their decision-making schemas (―internal models‖ or ―mental models‖) without the benefits of judicious identification, evaluation, and/or …
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 …
An Augmented Interaction Strategy For Designing Human-Machine Interfaces For Hydraulic Excavators, Joseph Akyeampong
An Augmented Interaction Strategy For Designing Human-Machine Interfaces For Hydraulic Excavators, Joseph Akyeampong
Dissertations
Lack of adequate information feedback and work visibility, and fatigue due to repetition have been identified as the major usability gaps in the human-machine interface (HMI) design of modern hydraulic excavators that subject operators to undue mental and physical workload, resulting in poor performance. To address these gaps, this work proposed an innovative interaction strategy, termed “augmented interaction”, for enhancing the usability of the hydraulic excavator. Augmented interaction involves the embodiment of heads-up display and coordinated control schemes into an efficient, effective and safe HMI. Augmented interaction was demonstrated using a framework consisting of three phases: Design, Implementation/Visualization, and Evaluation …