Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- MC252 (3)
- Nanoparticles (3)
- PAHs (3)
- Biodegradation (2)
- Biofuels (2)
-
- Driving Simulator (2)
- Fatigue (2)
- Fault diagnosis (2)
- Lean (2)
- Oil (2)
- PLGA (2)
- Performance (2)
- Pyrolysis (2)
- Sustainability (2)
- Sustained Casing Pressure (2)
- Thermography (2)
- 3D reconstruction (1)
- AASHTO girders (1)
- AFM (1)
- Acceptance (1)
- Aeration (1)
- Age (1)
- Agent-based modeling (1)
- Alarm interface (1)
- Alkanes (1)
- Alpha-tocopherol (1)
- Aluminum (1)
- Ammonia-N removal (1)
- Anaerobic bioreactor (1)
- Annular Fluid (1)
Articles 1 - 30 of 82
Full-Text Articles in Entire DC Network
Determining The Location Of Congestion Hot Spots In Urban Areas Using Image Analysis, Aditya Mokkapati
Determining The Location Of Congestion Hot Spots In Urban Areas Using Image Analysis, Aditya Mokkapati
LSU Master's Theses
The identification of congestion hot spots plays an important role in congestion monitoring of highway and arterial systems. Traditionally, vehicle detection systems or probe vehicles are used to measure travel time and identify congestion hot spots. This approach is time-consuming and resource intensive. With the advent of new technologies like crowdsourcing, travel time can be collected more cost-effectively using fewer resources. The research presented in this paper develops a new methodology to identify congestion hot spots in an urban area using freely available historical speed data gathered by Google and published as a traffic layer in Google maps. The methodology …
A Sustainable Remediation Approach For Complete Destruction Of Chloroethanes In Groundwater, Michael Joseph Cheatham
A Sustainable Remediation Approach For Complete Destruction Of Chloroethanes In Groundwater, Michael Joseph Cheatham
LSU Master's Theses
An up-flow column study was operated in a greenhouse composed of a sand/peat mixed media to investigate the effectiveness of an aerobic zone on the disappearances of chloroethane. The oxygen was supplied by mean of porous Silastic tubing under pressure with a breathing air gas cylinder. Chloroethane was generated via reductive dechlorination of 1,1,1-trichloroethane (TCA) and 1,1-dichloroethane (DCA) in anaerobic bioreactors (ABRs). The columns study was conducted with two duplicate reactors (operated in parallel) that underwent separate perturbations of breathing air introduction. Aqueous samples were collected in 160 mL microcosm bottles and analyzed on a GC equipped with a Flame …
Framework Development For A Performance-Based Specifications For Asphaltic Concrete Pavements, Harshavardhan Challa
Framework Development For A Performance-Based Specifications For Asphaltic Concrete Pavements, Harshavardhan Challa
LSU Master's Theses
The objective of this study was to develop a framework for performance-based specifications (PBS) which rely on the fundamental mechanistic asphalt mixture properties as performance predictors, verified to actual field performance, to compliment current QC/QA specifications for Louisiana. Nine asphalt paving projects were selected across the state with a total of 14 pavement sections that included 21 asphalt mixtures. A suite of laboratory tests using the Hamburg loaded-wheel tracking (LWT) test and the Semi-Circular Bending (SCB) were performed to evaluate the rutting and cracking resistance, respectively. In addition, the Indirect tensile dynamic modulus test (IDT E*) was conducted to evaluate …
Evaluation Of Different Harvesting And Storage Practices: Sweet Sorghum And Energycane, Ana Lucia Amaya Arroyave
Evaluation Of Different Harvesting And Storage Practices: Sweet Sorghum And Energycane, Ana Lucia Amaya Arroyave
LSU Master's Theses
Two attractive potential feed stocks for biofuel production are energycane and sweet sorghum due to the environmental adaptability, sugars concentration and yield. Evaluation and development of harvesting, transportation and storage practices is critical for bringing the production of these crops to industrial levels. This research aims to analyze the supply system of energy crops and evaluate the effect of different harvesting and storage in the yields of the feedstock and the efficiencies of the processes. Harvesting trials were conducted at St. Gabriel, LA for evaluating the feasibility of using energy crops as inputs for ethanol production. The parameters that were …
Biogeochemical Controls On Fate Of Subsurface Oiled Sands On A Coastal Headland Beach, Autumn Anastasia Westrick
Biogeochemical Controls On Fate Of Subsurface Oiled Sands On A Coastal Headland Beach, Autumn Anastasia Westrick
LSU Master's Theses
The fate of subsurface oiled sands collected from Fourchon Beach in Louisiana were determined while modifying biogeochemical controls on the degradation of PAHs. Groundwater on the beach has intrinsically low dissolved oxygen concentrations, which may limit natural biodegradation of the crude oil components. The intent of this research was to characterize the biogeochemical properties and degradability of oiled sands (with >10% of pore filled with MC252 oil) using a combination of laboratory flow-through reactor studies, field measurements and time-series microelectrode profiles of down-flow and cross flow geometries. Reactor experiments indicate that optimal conditions for substantial oil degradation are aerobic under …
Fabrication And Enhancement Of Aluminum-Based Microchannel Devices, Paul Joseph Hymel
Fabrication And Enhancement Of Aluminum-Based Microchannel Devices, Paul Joseph Hymel
LSU Master's Theses
Microscale molding replication and transient liquid phase (TLP) bonding were used to fabricate Al-based microchannel heat exchangers (MHEs) and micro gas chromatograph (mGC) columns. Metal-based microchannel heat exchangers often experience corrosion as a result of their operating conditions. To address this problem, an internal anodization method was developed in Al microtubes by pulsing the flow of electrolyte through a microtube when the current dropped below a set value. The anodic aluminum oxide (AAO) films were characterized by scanning electron microscopy (SEM), focused ion beam (FIB) cross sections, and X-ray energy dispersive spectroscopy (EDS) to determine their growth rate and morphology. …
Physico-Chemical Properties Of Green Leaf Volatiles, Harsha Satyanarayana Vempati
Physico-Chemical Properties Of Green Leaf Volatiles, Harsha Satyanarayana Vempati
LSU Master's Theses
Green Leaf Volatiles (GLVs) is a class of vegetation emissions whose release is greatly enhanced in the event of thermal or mechanical stress. These oxygenated hydrocarbons that have been identified as a potential source of Secondary Organic Aerosols (SOA) via aqueous oxidation. The physico-chemical properties of GLVs are vital to understanding their fate and transport in the atmosphere, but few experimental data are available. We studied the aqueous solubility, 1-Octanol/Water Partition Coefficient, and Henry’s Constant (KH) of five GLVs at 25&176;C: methyl jasmonate, methyl salicylate, 2-methyl-3-buten-2-ol, cis-3-hexen-1-ol, and cis-3-hexenyl acetate. Henry’s constant was additionally measured at 30&176;C & 35&176;C, and …
Mechanical And Thermal Properties Of Fly Ash-Based Geopolymer Cement, Fenghong Fan
Mechanical And Thermal Properties Of Fly Ash-Based Geopolymer Cement, Fenghong Fan
LSU Master's Theses
The geopolymer concrete is a more durable and green material with less CO2 emission and less energy consuming as compared with the widely used Portland cement (PC) concrete. In this thesis, an experimental study of the thermo-mechanical properties of a cement prepared using a class F fly ash and three different alkali-activators (NaOH activator, NaOH and Na2SiO3 mixture activator, and KOH and Na2SiO3 mixture activator) is presented. The mechanical properties, including the compressive strength, shrinkage, weight loss, and chemical composition, are investigated utilizing several key tools, such as X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and Energy Dispersive X-ray Spectroscopy …
Comparison Of Land Building By Mississippi River Diversion Using One And Two Dimensional Numerical Models, Gyan Prasad Basyal
Comparison Of Land Building By Mississippi River Diversion Using One And Two Dimensional Numerical Models, Gyan Prasad Basyal
LSU Master's Theses
River sediment diversions have been identified as one strategy for creating new land and offsetting Mississippi River delta plain land loss. Numerical modeling is one tool for estimating the amount of land, geomorphic features and ecological benefits from diversions. There are a number of models proposed to estimate sediment diversion land building, ranging from simplistic approaches that provide bulk characteristics and use little computational resources to process-based models that require a large amount of input parameters and computing power. This thesis aims to compare and contrast two approaches to simulating the land building processes in a simplified receiving basin: a …
Assimilation, A Biological Nitrogen Removal Strategy For Freshwater Ornamental Fish Hatcheries, Fatemehsadat Fahandezhsadi
Assimilation, A Biological Nitrogen Removal Strategy For Freshwater Ornamental Fish Hatcheries, Fatemehsadat Fahandezhsadi
LSU Master's Theses
Freshwater ornamental fish production is a major component of aquaculture in the southeastern United States. Closed recirculating aquaculture systems (RASs) allow freshwater ornamental fish hatcheries to mimic native water quality conditions for sensitive species. Total ammonia-N (TAN) removal is the major concern for closed RASs. Biological nitrification is the common method to control TAN. However, the nitrification process might be impaired in acidic water condition with pH<7. Another issue of using the nitrification process for TAN removal is that the nitrification is not sufficient to compensate for the amount of ammonia released in larval production systems because of slow growth rate of nitrifying bacteria. To address these issues, this study suggests an aerobic assimilation strategy in which fast growing heterotrophic bacteria directly convert TAN into microbial biomass. The heterotrophic bacteria needs an external carbon source. This study employed polyhydroxybutyrate (PHB) that is a solid insoluble bioplastic, as a carbon source in the aerobic assimilation process to avoid releasing carbon into the system. In order to understand the applicability of an assimilation process instead of nitrification, this study compared the ammonia-N removal rate by aerobic assimilation biofilters operating @ pH 8 and 6.5 in a batch system. The study also quantified the performance of an aerobic assimilation strategy under different continuous nitrogen loading regimes. This investigation can be used to establish the biofilter air pulsing frequency, which is the optimized air pulsing frequency that avoids clogging in the system. The results showed that there was no apparent release of carbon in the water tank. Unlike nitrification, assimilation strategy for TAN removal was not significantly different in two pH of 8 and 6.5 @ 28 ° C. The average consumption rate of the PHB was found as 21.93± 0.43 grams of PHB consumed per gram of TAN. The results from the continuous system, at a continuous feeding rate of 350 mg-N/d, suggested that the optimum air pulsing frequency through the PHB bed for releasing the excess biosolids was about 6-hour. In general, the study found that the aerobic assimilation using polyhydroxybutyrate (PHB) as a carbon source is an applicable method for ammonia-N removal particularly for freshwater ornamental fish production systems. The drawback against this approach is that the PHB beads are expensive. However, our investigations show that the average cost of the PHB beads have been decreased dramatically during the last few years. This might indicate that the assimilation using PHB beads can be a reasonable choice for ammonia-N removal particularly for freshwater ornamental fish production systems.
Field And Numerical Investigation Of Wave Power And Shoreline Retreat In Terrebonne Bay, Southern Louisiana, Kyle Ryan Parker
Field And Numerical Investigation Of Wave Power And Shoreline Retreat In Terrebonne Bay, Southern Louisiana, Kyle Ryan Parker
LSU Master's Theses
The marshland in southern Louisiana is a vital resource that many people and wildlife depend on. Terrebonne Bay was chosen for this research because it has experienced one of the largest wetland loss rates among Louisiana estuaries. Investigations of wave power and shoreline retreat rate could provide decision makers with a better understanding of the contributing wave force responsible for local shoreline retreat. A strong relationship has been shown to exist between wave power and shoreline retreat [Schwimmer (2001) and Marani et al. (2011)]. Whether or not this strong relationship exists in Terrebonne Bay is the subject of this research. …
Evaluating The Impact Of Lean On Employee Ergonomics, Safety, And Job Satisfaction In Manufacturing, Amanda Morse
Evaluating The Impact Of Lean On Employee Ergonomics, Safety, And Job Satisfaction In Manufacturing, Amanda Morse
LSU Master's Theses
The goal of this study was to explore the proposed relationship between employee satisfaction, ergonomics, and safety while implementing a Kaizen event. In order to address this goal, two Kaizen events (K1 and K2) were conducted in a heavy equipment manufacturing plant. Before and after both events, levels of employee satisfaction were documented for Kaizen and Non-Kaizen (NK) participants using the Job Diagnostic Survey (JDS). The objective of the first event (K1) was to improve the efficiency of the task of torqueing the rear axle bolts in Station #1- skid assembly. The K1 methodology followed a traditional Kaizen structure, enhanced …
Uptake And Deposition Of Pyrogenic And Petrogenic Pahs On Spartina Alterniflora, Yasmin Mohammad
Uptake And Deposition Of Pyrogenic And Petrogenic Pahs On Spartina Alterniflora, Yasmin Mohammad
LSU Master's Theses
Saline marshes dominated by Spartina alterniflora were impacted by MC252 crude oil along Louisiana’s shoreline. Two locations were evaluated in this study; a lightly oiled, saline marsh near Port Fourchon, LA and a less saline, heavily oiled marsh near Bay Jimmy in the Barataria Basin, LA. Objectives of this study were to develop a method to extract polycyclic aromatic hydrocarbons (PAHs) from Spartina leaves and to compare and contrast the relative uptake and deposition of petrogenic and pyrogenic PAHs in Spartina leaves. A three-step sequential extraction procedure was developed for the extraction and analysis of PAHs on Spartina leaves. In …
Travel Time Reliability And Level Of Service, Marlene Beverley Russell
Travel Time Reliability And Level Of Service, Marlene Beverley Russell
LSU Master's Theses
Travel time reliability (TTR) is familiar to travelers, and its indices are useful measures of the quality of a freeway’s service. Technical groups such as highway agencies are more familiar with a freeway’s level of service (LOS), but the LOS does not capture the variability in travel time. Similar to Pu (2011) this thesis introduces a modified buffer index (BI) incorporating a median rather than average travel time as a new travel time reliability measure. Current research by the SHRP 2 L08 Project Team defines freeway reliability LOS by determining equivalent travel time index for similar travel speed ranges shown …
Effect Of Different Alarm Interfaces On Controller Response, Aritra Datta
Effect Of Different Alarm Interfaces On Controller Response, Aritra Datta
LSU Master's Theses
Pipelines transport millions of barrels of petroleum products every day. Oil and gas pipelines have become important assets of the economic development of almost any country. Government regulations or internal policies regulate the safety of the assets for the population and environment where these pipelines run. Various strategies and technologies have been introduced for monitoring pipelines, but the most common technology to protect pipelines from occasional hazardous incidents is Computational Pipeline Monitoring (CPM). This technique collects and gathers information from the field related to pressures, flows, and temperatures to estimate the hydraulic behavior of the product being transported. Using the …
Laboratory Evaluation Of Asphalt Mixtures And Binders With Reclaimed Asphalt Shingle Prepared Using The Wet Process, Alejandro Jose Alvergue
Laboratory Evaluation Of Asphalt Mixtures And Binders With Reclaimed Asphalt Shingle Prepared Using The Wet Process, Alejandro Jose Alvergue
LSU Master's Theses
The objective of this study is to conduct a laboratory evaluation of asphalt mixtures and binders containing RAS prepared using the newly-developed wet process. In the proposed wet process, RAS material is blended with the binder at high temperature prior to mixing with the aggregates. The proposed wet process offers the potential to better control the Superpave Performance Grade (PG) of the binder blend, to stimulate chemical and physical interactions taking place in the blend between asphalt binder in shingles and virgin asphalt binder in the mix, and to reduce maintenance issues at the plant due to the high content …
Pah Degradation In Wetland Soils As Influenced By Redox Potential, Haoxuan Zhang
Pah Degradation In Wetland Soils As Influenced By Redox Potential, Haoxuan Zhang
LSU Master's Theses
Polycyclic aromatic hydrocarbons (PAHs) are a common contaminant in wetland soils. They are a group of compounds widely distributed in the environment and tend to accumulate in soils. Major contribution to removal of PAHs is biological degradation. For investigating the biodegradation potential of PAHs influenced by tidal actions, equipment was built for simulating the tidal actions, and concentrations of phenanthrene, pyrene, and benzo[e]pyrene were added to the soils samples which were collected from wetland. Experiments were then conducted over 120 days. Redox potentials and PAHs concentrations were measured and analyzed. Results are concluded: 1) influenced by tidal action, phenanthrene, pyrene, …
Analysis Of Data Selection And Inclusion For Highway Safety Manual Model Calibration, Bridget Scheyd Robicheaux
Analysis Of Data Selection And Inclusion For Highway Safety Manual Model Calibration, Bridget Scheyd Robicheaux
LSU Master's Theses
The application of the American Association of State Highway and Transportation Officials’ (AASHTO) Highway Safety Manual (HSM) to Louisiana roads is a key component to the Louisiana Department of Transportation and Development’s (LA DOTD) plan to improve safety on state highways and reach the goal of “Destination Zero Deaths.” To apply the HSM the research sought to develop state-specific HSM calibration factors for eight facility types. During the development process, the data-intensive computational procedure followed to compute the calibration factors revealed numerous issues associated with the inclusion and definitions of various data elements required by the HSM. These included coding …
Investigating Different Coding Environments For Simplified Reservoir Characterization Models, Atheer Mohammad Al Attar
Investigating Different Coding Environments For Simplified Reservoir Characterization Models, Atheer Mohammad Al Attar
LSU Master's Theses
Reservoir characterization is one of the most important tasks that determines the recovery plan for a specific reservoir. This process incorporates a significant amount of data acquisition and processing to finally develop an acceptable model that matches the production history and can forecast the future production behavior. The model also should be able to adapt to changes along the way: adding or removing producers or injectors, changing the injection pattern, recompletions and converting wells are all examples of possible changes that are common in the oil and gas industry. Usually these changes are modeled by running field-scale simulations and providing …
Integrating Recycled Glass Cullet In Asphalt Roof Shingles To Mitigate Heat Island Effect, Micah Kiletico
Integrating Recycled Glass Cullet In Asphalt Roof Shingles To Mitigate Heat Island Effect, Micah Kiletico
LSU Master's Theses
As an approach to mitigate the harmful effects of Urban Heat Island (UHI), the use of glass cullet in the production of asphalt roof shingles has the potential to be employed as a cool roof strategy. The objective of this study was to test the hypothesis that the use of recycled glass increases solar reflectance index (SRI) without affecting the performance of asphalt roof shingles. In order to evaluate the feasibility of recycled glass for alternative uses, the engineering properties of glass cullet were investigated and compared to conventional aggregates used in the production of asphalt roof shingles. Laboratory samples …
Carbon Nanotube Inkjet Printing For Flexible Electronics And Chemical Sensor Applications, Ryan P. Tortorich
Carbon Nanotube Inkjet Printing For Flexible Electronics And Chemical Sensor Applications, Ryan P. Tortorich
LSU Master's Theses
Carbon nanotubes (CNTs) are becoming a promising new material for use in many fields including the field of electronics. Their mechanical and electrical properties lend themselves to be used in a new generation of electronic devices, namely flexible electronics. Although many deposition methods for carbon nanotubes exist, inkjet printing offers many advantages including superior patterning ability and low-cost fabrication. Presented in this work is the use of inkjet printing in order to deposit carbon nanotubes onto a flexible transparency film. The methods for developing and printing an aqueous single-walled carbon nanotube (SWCNT) ink and an aqueous multi-walled carbon nanotube (MWCNT) …
An Experimental Investigation Of Corrosion Fatigue Life Via Thermographic Method, Richard Wayne Purvis
An Experimental Investigation Of Corrosion Fatigue Life Via Thermographic Method, Richard Wayne Purvis
LSU Master's Theses
The effect of prior corrosion fatigue damage on the thermographic response of 1018 low carbon steel is investigated. Specimens were subject to rotating bending fatigue at 38 Hz loading frequency while being exposed to a 3.5% NaCl and distilled water solution. Some specimens were subject to corrosion fatigue for part of their fatigue life and then their thermographic response measured under fatigue in air at 62 Hz loading frequency. Fatigue tests in air with thermographic measurement were performed as a comparison. It was observed that the initial temperature rise after corrosion fatigue fits the previously proposed model for air fatigue, …
Analyses Of Online Monitoring Signals For A Gmaw Process Before And After Improvement, Aniruddha Joshi
Analyses Of Online Monitoring Signals For A Gmaw Process Before And After Improvement, Aniruddha Joshi
LSU Master's Theses
The ability to detect the onset of welding instability is a very powerful tool in welding process monitoring and control. Toward this goal, this study investigates a gas metal arc welding (GMAW) process by analyzing online monitoring signals. Two separate data sets are obtained from the process, which correspond to (a) a stable process after improvement and (b) a relatively unstable process which tends to exhibit spatter and poor weld bead geometry. Voltage, current, wire-feeding speed and line speed signals for both data sets are analysed and features are extracted from the raw signals using different signal processing techniques. Specifically, …
Effect Of Forced Flow Oscillation On Churn And Annular Flow In Vertical Wellbores, Catalina Posada
Effect Of Forced Flow Oscillation On Churn And Annular Flow In Vertical Wellbores, Catalina Posada
LSU Master's Theses
Producing oil and gas from marginal hydrocarbon reservoirs and mature fields present particular challenges. One of the challenges for these types of fields is flow instability. Pipeline risers and artificial gas-lift systems experience instabilities, which cause significant reductions in production among others operational drawbacks. Different types of instabilities (static and dynamic) have been identified affecting those systems. However, there is still a lack of systematic investigations associated with the understanding of dynamic instabilities (periodic oscillations) and their impact in production systems. A systematic investigation of the effects of periodic forced oscillations on gas-liquid flows in a 42 m (140-ft) long, …
Composition Control Of Spinel Lithium Manganese Oxide For High Voltage, High Energy Lithium Ion Batteries, Hilary Eikhuemelo
Composition Control Of Spinel Lithium Manganese Oxide For High Voltage, High Energy Lithium Ion Batteries, Hilary Eikhuemelo
LSU Master's Theses
In the quest for renewable source of energy, a remarkable step made was in the introduction of the battery system. The lithium ion battery was revolutionary in this regard particularly for its light weight and high energy density. There has been significant progress in the development of this battery system since the present form was introduced in the 1990s. There is currently a global dependence on the use of lithium ion battery in diverse applications such as in the electronics, communications and automobiles. Unfortunately, the energy obtainable from the lithium ion battery continuously falls behind the energy demand. This setback …
Effects Of Drill-Pipe Whirling Motion On Cuttings Transport Performance For Horizontal Drilling, Yasin Demiralp
Effects Of Drill-Pipe Whirling Motion On Cuttings Transport Performance For Horizontal Drilling, Yasin Demiralp
LSU Master's Theses
Dispersion, deposition, and suspension of particulate materials in the carrier fluid play a significant role in the oil industry. Increasing the cuttings transport performance in deviated wells is difficult due to the rolling/sliding transport, and cuttings settling on the low side of the annulus. Insufficient cuttings transport may lead to some crucial problems such as pipe sticking, increasing in torque and drag, material damage and bed cementing quality. Increasing flow rates and improving mud properties may not be applicable for a proper hole cleaning because of the hydraulic and mechanical limitations. In such cases, additional pressure may be generated, and …
Low Frequency Improvements To Commercial Geophones, Brian Michael Holden
Low Frequency Improvements To Commercial Geophones, Brian Michael Holden
LSU Master's Theses
Commercial geophones have been used in the field of geology for many years. They are commonly used to detect oil and gas deposits and create three dimensional simulations of the earth. Geophones are commonly made up of a spring mounted magnetic mass moving back and forth in a wire coil to create a voltage. The response of the coil is proportional to the velocity of the ground. At various frequencies, seismic events can be measured using a geophone. However, most commercial geophones only allow accurate measurements of frequencies down to approximately five hertz. By using a feedback circuit, an attempt …
Efficient Dense 3d Reconstruction Using Image Pairs, Padmapriya Ravi
Efficient Dense 3d Reconstruction Using Image Pairs, Padmapriya Ravi
LSU Master's Theses
The 3D reconstruction of a scene from 2D images is an important topic in the _x000C_eld of Computer Vision due to the high demand in various applications such as gaming, animations, face recognition, parts inspections, etc. The accuracy of a 3D reconstruction is highly dependent on the accuracy of the correspondence matching between the images. For the purpose of high accuracy of 3D reconstruction system using just two images of the scene, it is important to _x000C_nd accurate correspondence between the image pairs. In this thesis, we implement an accurate 3D reconstruction system from two images of the scene at …
Using Eye-Tracking To Investigate Strategy And Performance Of Expert And Novice Control Room Operators, Christina Marie Koffskey
Using Eye-Tracking To Investigate Strategy And Performance Of Expert And Novice Control Room Operators, Christina Marie Koffskey
LSU Master's Theses
There is lacking research within the Petrochemical Industry that uses eye-tracking to explore the differences between the strategies of expert and novice control room operators as they monitor and address process parameters that could be used to improve novice training programs and interface design. Scan paths and three eye-tracking metrics (Fixation Frequency, Gaze Duration Mean, and Gaze Percentage) were used to investigate the differences in eye behavior of three expert control room operators and six novice students as they monitored and corrected a Crude Refinement simulation. A 2x2x2 mixed factor design was used to explore the effects that expertise (expert …
Assessing The Effects Of Work Zone Configurations On Drivers' Visual Attention, Karthy Punniaraj
Assessing The Effects Of Work Zone Configurations On Drivers' Visual Attention, Karthy Punniaraj
LSU Master's Theses
This study assessed the effects of two different work zone configurations on driver’s visual attention by eye movement monitoring. A driving simulator study was conducted with thirty participants. Variations in traffic density and warning sign placement distance were added to the merge configurations to simulate the real time situation. A 2 x 2 x 3 within-subjects factorial design was used for this research. The independent variables used in this study were (1) merge configuration [(i) Conventional Lane Merge (CLM) and (ii) Joint Lane Merge (JLM)], (2) traffic density [(i) high and (ii) low] and (3) distance between traffic signs [(i) …