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

Prediction Of Extraction Forces For Entrapment Victim In Common Grain Storage Conditions, Charles V. Schwab, Pamela J. Schwab, Lauren E. Schwab Jan 2018

Prediction Of Extraction Forces For Entrapment Victim In Common Grain Storage Conditions, Charles V. Schwab, Pamela J. Schwab, Lauren E. Schwab

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

One contributor to agriculture’s high death rate is confined space fatalities caused by entrapment in granular materials. Over 1,000 grain-related fatalities have been documented by researchers in 43 states, and those states with the largest grain storage capacities have been shown to experience a proportionally large number of the suffocation fatalities. Several researchers have measured extraction forces in specific conditions, but a reference standard for estimating the extraction forces for a grain suffocation victim in common conditions is needed. A prediction model for estimating extraction forces was developed using the principle of boundary shear, an approximation of human ...


Virtual Operator Models For Off-Highway Machine Virtual Prototyping, Yu Du, Michael C. Dorneich, Brian L. Steward Jul 2017

Virtual Operator Models For Off-Highway Machine Virtual Prototyping, Yu Du, Michael C. Dorneich, Brian L. Steward

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Increasing demands on the world‘s resources require the design of off-highway machines that provide greater functionality and productivity along with greater efficiency. Model-based or virtual design provides a means for achieving these design improvements with reduced time and costs. However, virtual design is often limited by the fidelity with which human operators are modeled. A greater understanding of how highly skilled operators obtain high machine performance and productivity can inform machine development and advance agricultural and construction machine automation technology. This research investigated how machine operator expertise, strategies, and decision-making can be integrated into operator models that simulate authentic ...


A Design Framework For Off-Road Equipment Automation, Brian L. Steward, Lie Tang, Shufeng Han Jan 2015

A Design Framework For Off-Road Equipment Automation, Brian L. Steward, Lie Tang, Shufeng Han

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Design frameworks can be helpful in the development of complex systems needed to automate machines. Designing autonomous off-road machinery requires having the means for managing the complexity of multiple interacting systems. A design framework, consisting of four technical layers, is presented. These layers are (1) machine architecture, (2) machine awareness, (3) machine control, and (4) machine behavior. Examples of technology advanced in development efforts of autonomous, robotic platforms for agricultural applications are provided. Linkages were made to applications in the construction machinery sector. Similarities between agricultural and construction automation exist in each of the technical layers.


Evaluating Program Outcomes Via Decision Making Simulations, Steven A. Freeman, Nir Keren Nov 2012

Evaluating Program Outcomes Via Decision Making Simulations, Steven A. Freeman, Nir Keren

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Decision making-based methodology was proposed for evaluating program outcomes. The methodology was tested to measure the effect of safety enhancing curriculum on Safety Awareness, one of the 15 competencies ABE is using in program outcome evaluations. The results indicated a significant increase in safety awareness and shift in cognitive processes following implementation of the curriculum. Since ABE measures competencies via supervisory evaluation of graduates, the authors examine the opportunity of developing a longitudinal study for measuring the magnitude of impact of curriculum on outcomes at the workplace.


Factors Considered In The Development Of Curricular Content In Engineering Technology For Diverse Audiences, Gretchen A. Mosher, Chad M. Laux Nov 2012

Factors Considered In The Development Of Curricular Content In Engineering Technology For Diverse Audiences, Gretchen A. Mosher, Chad M. Laux

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Supply chains which handle and process bulk materials such as food ingredients and food stuffs have unique needs and challenges. Bulk material supply chains are characterized by the aggregation of large, homogeneous lots of product intended for a wide spectrum of end uses. Transportation and storage functions are also completed within a large-scale system, which add complexity to the management of these types of supply chains (Thakur & Hurburgh, 2009). Uncertainty and risk management are especially challenging.

The systems approach of engineering technology offers strategies for managing operations, risk and uncertainty in bulk materials supply chains. Furthermore, engineering technology graduates often ...


Measurement Of Quality-Based Risks In The Bulk Material Supply Chain, Gretchen A. Mosher Nov 2012

Measurement Of Quality-Based Risks In The Bulk Material Supply Chain, Gretchen A. Mosher

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

The audience will learn about the process used to identify, quantify, and evaluation quality risks in the bulk material supply chain. Use of the process map will be discussed from a quality management perspective. Implications for industrial practice will be shared.


What We Have Learned About Experience, Time Pressure, And Difficult Tradeoffs From Experiments With Firefighters In Virtual Reality, Nir Keren Nov 2012

What We Have Learned About Experience, Time Pressure, And Difficult Tradeoffs From Experiments With Firefighters In Virtual Reality, Nir Keren

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

In general, attendees will learn that experience does not guarantee faster and more accurate decisions. Furthermore, experienced firefighters demonstrated higher level of threat‐related stress than inexperienced firefighters.


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 ...


Measuring The Relationship Between Employee Trust And Quality Decision-Making, Gretchen A. Mosher Nov 2011

Measuring The Relationship Between Employee Trust And Quality Decision-Making, Gretchen A. Mosher

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Quality is one of several workplace goals and several factors influence the quality climate of an organization. One factor believed to play a role in quality climate is trust. Although limited research has examined the relationship between trust and quality climate, no previous inquiry has examined the role worker trust levels play in quality-related decision-making in a workplace setting. Because workplace quality outcomes depend heavily on the decisions made by employees, an understanding of the factors which influence the decisionmaking process of employees is an important component of workplace quality initiatives.


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.


Delivery Of An Online Quality Management Course For Adult Learners, Gretchen A. Mosher, Steven A. Freeman Oct 2010

Delivery Of An Online Quality Management Course For Adult Learners, Gretchen A. Mosher, Steven A. Freeman

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

The introduction of quality management systems in the workplace offers strategies for process improvement, strategic organizational change, and continuous quality improvement. Opportunities to learn these concepts in an online format allows for an efficient and cost effective delivery method. However, adult learners often do not have the comfort level with online learning that college-aged students take for granted. This presentation will describe the process which was used to develop and deliver an online non-credit course in quality management systems for adult students. Strategies used to encourage online discussion and student interaction will also be discussed.


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 ...


Traceability Activities In The United States And The Trace Project, Maitri Thakur, Charles R. Hurburgh Jr. Dec 2009

Traceability Activities In The United States And The Trace Project, Maitri Thakur, Charles R. Hurburgh Jr.

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

No abstract provided.


Using Mock Recall Data To Measure Continuous Quality Improvement, Gretchen A. Mosher, Chad M. Laux, Charles R. Hurburgh Jr. Nov 2009

Using Mock Recall Data To Measure Continuous Quality Improvement, Gretchen A. Mosher, Chad M. Laux, Charles R. Hurburgh Jr.

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Continuous quality improvement is essential to firms who wish to function within a global business environment. Strategic quality improvement is often facilitated through a formalized quality management system (West & Cianfrani, 2004). Quality management systems have been used for many years in industries such as manufacturing and health care to improve efficiencies and maintain high levels of customer satisfaction (Deming, 2000; Bowersox et al., 2007), but their use in processing industries such as food and agriculture is a more recent trend (Hurburgh & Lawrence, 2003). These systems provide a way for firms to focus on customer requirements and tighten their supply chains by clearly defining and controlling their operations and processes (West & Cianfrani, 2004).


A Lot Aggregation Optimization Model For Minimizing Food Traceability Effort, Maitri Thakur, Lizhi Wang, Charles R. Hurburgh Jr. Jun 2009

A Lot Aggregation Optimization Model For Minimizing Food Traceability Effort, Maitri Thakur, Lizhi Wang, Charles R. Hurburgh Jr.

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

This paper proposes a lot aggregation optimization model for minimizing the traceability effort at a grain elevator. The problem involves blending of bulk grain to meet customer specifications. A mathematical multi-objective mixed integer programming (MIP) model is proposed with two objective functions. The objective functions allow in calculating the minimum levels of lot aggregation and minimum discounts that need to be applied to a shipment when the customer contract specifications are not met. Constraints on the system include customer contract specifications, availability of grain at the elevator and the blending requirements. The solutions include the quantities of grain lots from ...


Using Quality Management Systems To Meet Food Traceability Requirements Of The Bioterrorism Act Of 2002, Chad M. Laux, Charles R. Hurburgh Jr., Gretchen A. Mosher Nov 2008

Using Quality Management Systems To Meet Food Traceability Requirements Of The Bioterrorism Act Of 2002, Chad M. Laux, Charles R. Hurburgh Jr., Gretchen A. Mosher

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

The events of 9/11 intensified concerns about the safety of food. Legislation requirements for food traceability present challenges for US grain handlers in meeting new regulations of the Food and Drug Administration (FDA) (Iowa Grain Quality Initiative, 2006). With the goal of protecting the US food supply, the Public Health Security and Bioterrorism Preparedness and Response Act of 2002 (known as ‘the Act’).


Gauge R&R: An Effective Methodology For Determining The Adequacy Of A New Measurement System For Micron-Level Metrology, David W. Hoffa, Chad M. Laux Oct 2007

Gauge R&R: An Effective Methodology For Determining The Adequacy Of A New Measurement System For Micron-Level Metrology, David W. Hoffa, Chad M. Laux

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

To compete in a global marketplace, manufacturers are increasingly turning to advanced manufacturing techniques to increase productivity and gain a competitive advantage. This trend requires management to be able to make decisions based on proper quantitative analysis of data. In the manufacturing process, control of variation with an increasingly high degree of precision demands an improved degree of measurement effectiveness. Measurement Systems Analysis (MSA) is a collection of statistical methods (which includes the Gauge Repeatability and Reproducibility study) for the analysis of measurement system capability (Automotive Industry Action Group [AIAG], 2002; Smith, McCrary, & Callahan, 2007).