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Full-Text Articles in Operations Research, Systems Engineering and Industrial Engineering

Effects Of Light Illumination On Ocular Responses And Visual Comfort, Shun-Nan Yang, Manho Jang, Jim Sheedy, Yeokyung Seo Jan 2019

Effects Of Light Illumination On Ocular Responses And Visual Comfort, Shun-Nan Yang, Manho Jang, Jim Sheedy, Yeokyung Seo

VPI Research

Background: Artificial light sources such as Light-emitting Diode (LED) emit more intensive blue light (460 to 490 nm) and are with a wavelength distribution deviating from the peak wavelength of 550 nm in natural sun light. The present study examined how cold and warm LED lamps with high- and low-blue light emission differently affected objective ocular responses and subjective viewing symptoms. Methods: 34 adults with normal or correct-to-normal vision read printed continuous text with one of three lamps (LED 4000 K, LED 6500 K and OLED 4000 K) generating 50 and 110 Nits for 60 mins respectively while their pupil ...


Vaccine Distribution Strategies Against Polio: An Analysis Of Turkey Scenario, Elif Elçin Günay, Kijung Park, Sena Aydoğan, Gül E. Okudan Kremer Jan 2019

Vaccine Distribution Strategies Against Polio: An Analysis Of Turkey Scenario, Elif Elçin Günay, Kijung Park, Sena Aydoğan, Gül E. Okudan Kremer

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

As a result of the ongoing Syrian civil war, almost 3 million refugees moved to Turkey since 2011 because of security reasons. However, the government operated refugee camps have been largely inadequate to accommodate this huge number of refugees. Therefore, almost 91% of the Syrian refugees live out of government-operated camps. According to a Turkish Disaster and Emergency Management Agency (AFAD) report, 45.4% of the children under 5 years old who live out of camps are not vaccinated against polio. This presents a serious health threat to the local population and the whole region. In order to deal with ...


Assessment Of Ergonomics In Indian Dental Practice: A Workplace Analysis, Divya Gadde Apr 2018

Assessment Of Ergonomics In Indian Dental Practice: A Workplace Analysis, Divya Gadde

Masters Theses & Specialist Projects

Dental practice requires unique working conditions such as prolonged working hours, strained body postures and laborious, high finesse dental techniques. However, it can be more efficiently performed by the application of ergonomics, rather than physically forcing the worker's body to fit the job. Posture is highly influenced by factors such as inadequate working level, incorrect patient positioning, and poor visual comfort. In order to eliminate musculoskeletal disorders it is necessary to control these and other factors, and design the human work environment to be more ergonomic. The aim of this study was to assess ergonomics within Indian dental practice ...


Evaluation Of The Effectiveness Of A Gaze-Based Training Intervention On Latent Hazard Anticipation Skills For Young Drivers: A Driving Simulator Study, Yasuke Yamani, Pinar Biçaksiz, Dakota B. Palmer, Nathan Hatfield, Siby Samuel Apr 2018

Evaluation Of The Effectiveness Of A Gaze-Based Training Intervention On Latent Hazard Anticipation Skills For Young Drivers: A Driving Simulator Study, Yasuke Yamani, Pinar Biçaksiz, Dakota B. Palmer, Nathan Hatfield, Siby Samuel

Psychology Faculty Publications

A PC-based training program (Road Awareness and Perception Training or RAPT; Pradhan et al., 2009), proven effective for improving young novice drivers' hazard anticipation skills, did not fully maximize the hazard anticipation performance of young drivers despite the use of similar anticipation scenarios in both, the training and the evaluation drives. The current driving simulator experiment examined the additive effects of expert eye movement videos following RAPT training on young drivers' hazard anticipation performance compared to video-only and RAPT-only conditions. The study employed a between-subject design in which 36 young participants (aged 18-21) were equally and randomly assigned to one ...


Using Workers’ Compensation Claims Data To Characterize Occupational Injuries In The Biofuels Industry, Sai K. Ramaswamy, Gretchen A. Mosher Mar 2018

Using Workers’ Compensation Claims Data To Characterize Occupational Injuries In The Biofuels Industry, Sai K. Ramaswamy, Gretchen A. Mosher

Agricultural and Biosystems Engineering Publications

Biofuels production is a fast growing and emerging industry. Occupational injuries are a serious problem due to their human, financial and social costs, yet little research has been published on injuries in the biofuels industry. Learning from past injuries are essential for preventing future occurrences, but the lack of injury information hinders this effort in the biofuels industry. The present study addresses this knowledge gap by utilizing data from over 900 workers’ compensation claims reported from 2008 to 2016 by ethanol and biodiesel facilities in the U.S. to characterize injury costs and severity. The total amount paid for each ...


The Effect Of Magnification Loupes On Dental Hygienists' Posture While Exploring, Emily Ludwig, Gayle B. Mccombs, Susan L. Tolle, Daniel M. Russell Aug 2017

The Effect Of Magnification Loupes On Dental Hygienists' Posture While Exploring, Emily Ludwig, Gayle B. Mccombs, Susan L. Tolle, Daniel M. Russell

Dental Hygiene Faculty Publications

Purpose: The purpose of this study was to determine the effects of dental magnification loupes on posture during instrumentation.

Methods: A convenience sample of 27 right-handed dental hygienists, with no prior history of injuries or disabilities of the head, neck, or trunk region, enrolled in the study. Baseline posture calibration was taken and tri-axial accelerometers were placed on four locations of the head and trunk (occipital region of head; cervical vertebrae C5; thoracic vertebrae T5; lumbar vertebrae L1) to measure acceleration and the orientation of the body to gravity. Participants were randomly assigned to wear self-supplied magnification loupes during either ...


Likelihood Of Entanglement When Materials Are Dropped Vertically Onto A Rotating Pto Knuckle, Charles V. Schwab, Isaac J. Rempe Jan 2017

Likelihood Of Entanglement When Materials Are Dropped Vertically Onto A Rotating Pto Knuckle, Charles V. Schwab, Isaac J. Rempe

Agricultural and Biosystems Engineering Publications

Power take-off (PTO) is a common method of transferring power from a tractor to a towed piece of machinery. The PTO is also a well-documented cause of severe and often permanent disabling injuries to farm operators. The physical conditions that cause entanglements are not well established. Several studies have explored the parameters of PTO entanglements as materials have been drawn across a rotating PTO knuckle to test for entanglement probability. The objective of this study was to determine probability of entanglement when materials are dropped vertically onto a PTO knuckle spinning at 540 rpm. A total of 360 randomized trials ...


Robust System For Infection Control - An Industrial Systems Engineering Approach, Sundaravel Vinay Swarup Achudhan May 2014

Robust System For Infection Control - An Industrial Systems Engineering Approach, Sundaravel Vinay Swarup Achudhan

Mechanical (and Materials) Engineering -- Dissertations, Theses, and Student Research

Health care delivery in the United States needs improvement. Each year about 98,000 people die as a result of medical errors and the United States is outranked by a number of developed countries in life expectancy, mortality and comorbidity. Healthcare quality is determined based on the quality of the service provided to the patient during their visit. Apart from the traditional problem solving design and development tools used to improve healthcare quality, The National Academy of Engineering and the Institute of Medicine recommend systems engineering principle and systems engineering tools to be used in health care to improve the ...


A System Dynamics Model For Simulating Ambulatory Health Care Demands, Rafael Diaz, Joshua G. Behr, Mandar Tulpule Jan 2012

A System Dynamics Model For Simulating Ambulatory Health Care Demands, Rafael Diaz, Joshua G. Behr, Mandar Tulpule

VMASC Publications

Introduction: This article demonstrates the utility of the system dynamics approach to model and simulate US demand for ambulatory health care service both for the general population and for specific cohort subpopulations over the 5-year period, from 2003 to 2008. A system dynamics approach that is shown to meaningfully project demand for services has implications for health resource planning and for generating knowledge that is critical to assessing interventions.

Methods: The study uses a cohort-component method in combination with structural modeling to simulate ambulatory health care utilization. Data are drawn from the National Ambulatory Medical Care Survey and the National ...


Analysis Of Safety Decision-Making Data Using Event Tree Analysis, Gretchen A. Mosher, Nir Keren Nov 2011

Analysis Of Safety Decision-Making Data Using Event Tree Analysis, Gretchen A. Mosher, Nir Keren

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Predicting and analyzing employee safety decision-making is an important component of managing safety in the workplace. This presentation will discuss the process of transforming existing safety decisionmaking data into an event tree pathway. Event tree analysis methodology is utilized to identify contributing factors in complex systems, illustrate interrelationships of the causes of specified events, and to quantify probabilities of occurrence for each pathway of events. Once pathways are constructed and probabilities for each are estimated, safety decision paths with the highest probabilities can be targeted for educational intervention. Thus, the use of safety decision-making data with event tree analysis has ...


Measurement And Analysis Of Safety And Quality Decision-Making In The Workplace, Gretchen A. Mosher Oct 2010

Measurement And Analysis Of Safety And Quality Decision-Making In The Workplace, Gretchen A. Mosher

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Human factors play an important, but often overlooked, role in the management of safety and quality in the work environment. One of these factors is trust. Little research has been done to explore the linkages between trust and safety or quality workplace outcomes. Safety and quality programs depend heavily on the decisions employees make on the job, therefore, an increased understanding of factors influencing their decision-making process is an important component of safety and quality educational intervention.


The Impact Of Employee Trust On The Perceptions Of Organizational Safety And Quality, Gretchen A. Mosher, Nir Keren, Steven A. Freeman Oct 2010

The Impact Of Employee Trust On The Perceptions Of Organizational Safety And Quality, Gretchen A. Mosher, Nir Keren, Steven A. Freeman

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Human factors play an important, but often overlooked, role in the management of safety and quality in the work environment. One of these factors is the level of trust employees have in their supervisor and the management of the organization. Anecdotal evidence has linked a stronger safety climate with a more robust quality climate as both programs depend on teamoriented employees who can spot potential issues and correct them on the job. An increased understanding of factors influencing employee perceptions of the priority of safety and quality within the organization is an important consideration when planning safety and quality educational ...


Incident Database-Based Framework For Establishing Industrial Safety Performance Assessments, Nir Keren Apr 2010

Incident Database-Based Framework For Establishing Industrial Safety Performance Assessments, Nir Keren

Agricultural and Biosystems Engineering Publications

Many organizations collect data on industrial incidents. These organizations differ from each other in their interests, data collection procedures, definitions, and scope, and each of them is analyzing its data to achieve its goal and to accomplish its mission. However, there were no attempts to explore the potential hidden in integrating data sources. Extensive efforts are required in order to integrate information from different data sources as well as to identify the effects of the individual aspects of data collection procedures on the quality and completeness of the data. This work presents a methodology for incident data collection from various ...


Ergonomic Risk Factors For Low Back Pain In North Carolina Crab Pot And Gill Net Commercial Fishermen, Kristen L. Kucera, Dana Loomis, Hester J. Lipscomb, Stephen W. Marshall, Gary A. Mirka, Julie Daniels Jan 2009

Ergonomic Risk Factors For Low Back Pain In North Carolina Crab Pot And Gill Net Commercial Fishermen, Kristen L. Kucera, Dana Loomis, Hester J. Lipscomb, Stephen W. Marshall, Gary A. Mirka, Julie Daniels

Industrial and Manufacturing Systems Engineering Publications

Background The objective of this research was to determine the association between LBP that limited or interrupted fishing work and ergonomic low back stress measured by (1) self-reported task and (2) two ergonomic assessment methods of low back stress.

Methods Eligible participants were from a cohort of North Carolina commercial fishermen followed for LBP in regular clinic visits from 1999 to 2001 (n = 177). Work history, including crab pot and gill net fishing task frequency, was evaluated in a telephone questionnaire (n = 105). Ergonomic exposures were measured in previous study of 25 fishermen using two methods. The occurrence rate of ...


Dickey-Lincoln School Lakes Project Environmental Impact Statement: Appendix H: Noise Impact Assessment, Stone & Webster Engineering Corporation, New England Division, United States Army Engineer Division Jan 1977

Dickey-Lincoln School Lakes Project Environmental Impact Statement: Appendix H: Noise Impact Assessment, Stone & Webster Engineering Corporation, New England Division, United States Army Engineer Division

Dickey-Lincoln School Lakes Project

The overall project area can be described as a very quiet natural area remote from any major industrial activity, but subject to high traffic noise levels along the main road. Noise sensitive areas consist of low density residential areas in the villages and widely spaced residences along the main road. The estimated yearly average Ldn for all noise sensitive areas 1s 60 dB due to the close proximity of traffic to all residences. The yearly average Ldn decreases to 40 dB at 600 ft from the main road, and to 30 dB 1n the timberland areas.