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Full-Text Articles in Operations Research, Systems Engineering and Industrial Engineering
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 …
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 …
Investigating Fabrication Methods For Micro Single-Chamber Solid Oxide Fuel Cells, Man Yang
Investigating Fabrication Methods For Micro Single-Chamber Solid Oxide Fuel Cells, Man Yang
Dissertations
A Solid Oxide Fuel Cell (SOFC) is a green energy technology that offers a cleaner and efficient alternative to fossil fuels. The efficiency and utility of SOFCs can be enhanced by fabricating miniaturized component structures within the fuel cell footprint. This research focuses on the microfabrication of parallel-connected inter-digitized design of micro single chamber SOFC (μ-SC-SOFCs). In this dissertation, candidate micro/nano fabrication techniques to precisely fabricate micro patterns on planar substrates have been studied. These include EBL, soft lithography, photolithography, and direct-writing. After analyzing preliminary results, two combinational approaches were further investigated. The first method involves the combination of the …