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Iowa State University

Agricultural and Biosystems Engineering Publications

Articles 1 - 16 of 16

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

Evaluating Machine Learning Performance In Predicting Injury Severity In Agribusiness Industries, Fatemeh Davoudi Kakhki, Steven A. Freeman, Gretchen A. Mosher Aug 2019

Evaluating Machine Learning Performance In Predicting Injury Severity In Agribusiness Industries, Fatemeh Davoudi Kakhki, Steven A. Freeman, Gretchen A. Mosher

Agricultural and Biosystems Engineering Publications

Although machine learning methods have been used as an outcome prediction tool in many fields, their utilization in predicting incident outcome in occupational safety is relatively new. This study tests the performance of machine learning techniques in modeling and predicting occupational incidents severity with respect to accessible information of injured workers in agribusiness industries using workers’ compensation claims. More than 33,000 incidents within agribusiness industries in the Midwest of the United States for 2008–2016 were analyzed. The total cost of incidents was extracted and classified from workers’ compensation claims. Supervised machine learning algorithms for classification (support vector machines ...


Techno-Economic Analysis (Tea) Of Extruded Aquafeeds, Rashid Suleiman, Kurt A. Rosentrater Jul 2018

Techno-Economic Analysis (Tea) Of Extruded Aquafeeds, Rashid Suleiman, Kurt A. Rosentrater

Agricultural and Biosystems Engineering Publications

The worldwide decline and overexploitation of ocean fisheries stocks had provided an incentive for the rapid growth of aquaculture. The aquaculture industry has been recognized as the fastest-growing food production system globally, with a 10% increase in production per year and is one of the most reliable and sustainable growth markets for manufactured feeds. Extrusion technology has been extensively used in the modern aquatic feed manufacturing, due to nutritional, physical properties improvements and cost effectiveness of feeds. Cost related to aquatic feed remains the biggest challenge, especially for small-scale producers. In order to understand costs and potential breakeven points, a ...


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 ...


Challenges In Technology Adoption In Indian Public Distribution System: A Quality Management Approach, Varun Chhabra, Shweta Chopra, Prashant Rajan Jan 2018

Challenges In Technology Adoption In Indian Public Distribution System: A Quality Management Approach, Varun Chhabra, Shweta Chopra, Prashant Rajan

Agricultural and Biosystems Engineering Publications

Information and communication technologies are being used by various countries to provide faster and transparent services to their citizens through e-government initiatives. A large population in developing countries remain deprived of these services due to lack of skills, training and infrastructure. Local community intermediaries with necessary skills are employed to provide these services to beneficiaries. The purpose of this study was to identify and prioritise the challenges faced by intermediaries in adopting e-government technology. Quality management tools of list reduction, affinity diagram and Pareto chart were used for this purpose. Utilising quality management tools is an unconventional approach to problem ...


3d Perception-Based Collision-Free Robotic Leaf Probing For Automated Indoor Plant Phenotyping, Yin Bao, Dylan Shah, Lie Tang Jan 2018

3d Perception-Based Collision-Free Robotic Leaf Probing For Automated Indoor Plant Phenotyping, Yin Bao, Dylan Shah, Lie Tang

Agricultural and Biosystems Engineering Publications

Various instrumentation devices for plant physiology study such as spectrometer, chlorophyll fluorimeter, and Raman spectroscopy sensor require accurate placement of their sensor probes toward the leaf surface to meet specific requirements of probe-to-target distance and orientation. In this work, a Kinect V2 sensor, a high-precision 2D laser profilometer, and a six-axis robotic manipulator were used to automate the leaf probing task. The relatively wide field of view and high resolution of Kinect V2 allowed rapid capture of the full 3D environment in front of the robot. The location and size of each plant were estimated by k-means clustering where “k ...


Design And Field Evaluation Of A Ground Robot For High-Throughput Phenotyping Of Energy Sorghum, Sierra N. Young, Erkan Kayacan, Joshua Peschel Jan 2018

Design And Field Evaluation Of A Ground Robot For High-Throughput Phenotyping Of Energy Sorghum, Sierra N. Young, Erkan Kayacan, Joshua Peschel

Agricultural and Biosystems Engineering Publications

This article describes the design and field evaluation of a low-cost, high-throughput phenotyping robot for energy sorghum for use in biofuel production. High-throughput phenotyping approaches have been used in isolated growth chambers or greenhouses, but there is a growing need for field-based, precision agriculture techniques to measure large quantities of plants at high spatial and temporal resolutions throughout a growing season. A low-cost, tracked mobile robot was developed to collect phenotypic data for individual plants and tested on two separate energy sorghum fields in Central Illinois during summer 2016. Stereo imaging techniques determined plant height, and a depth sensor measured ...


Let’S Stop Treating Our Youth Like Dummies, William E. Field, Yuan-Hsin Cheng, Roger Tormoehlen, Robert Aherin, Charles V. Schwab, Daniel Neenan, Matthew Roberts Jan 2018

Let’S Stop Treating Our Youth Like Dummies, William E. Field, Yuan-Hsin Cheng, Roger Tormoehlen, Robert Aherin, Charles V. Schwab, Daniel Neenan, Matthew Roberts

Agricultural and Biosystems Engineering Publications

At a recent training event to evaluate various types of rescue devices and strategies to extricate victims from partial entrapment in free-flowing grain, a group of volunteer high school students were invited to participate as test subjects. For each test, two youth were equipped with full-body harnesses and lifelines, asked to stand on the grain surface in a semi-trailer load of dry corn, and then allowed to be drawn into the grain as the bottom discharge gate under each youth was opened. Both “victims” were drawn into the grain at either end of the trailer at the same time, each ...


Estimating Passive Stress Acting On A Grain Entrapment Victim’S Chest, Salah F. Issa, Carl Wassgren, Charles V. Schwab, Richard Stroshine, William E. Field Jan 2018

Estimating Passive Stress Acting On A Grain Entrapment Victim’S Chest, Salah F. Issa, Carl Wassgren, Charles V. Schwab, Richard Stroshine, William E. Field

Agricultural and Biosystems Engineering Publications

Grain entrapments remain a major concern in the grain industry, with 1,100 incidents documented since the 1970s. One particular concern is the ability of a victim to breathe while entrapped in grain. Anecdotal reports suggest that victims struggle to breathe when entrapped in grain to a depth that covers their chests, yet some evidence indicates that victims should be able to breathe normally as long as their airways are not blocked regardless of depth. The hypothesis for this discrepancy is that previously published experiments measured an active stress state in the grain, while a person breathing also experiences a ...


Lean Adoption In A Small And Medium Enterprise: Model Validation, Kimberly Deranek, Shweta Chopra, Gretchen A. Mosher Aug 2017

Lean Adoption In A Small And Medium Enterprise: Model Validation, Kimberly Deranek, Shweta Chopra, Gretchen A. Mosher

Agricultural and Biosystems Engineering Publications

Globally, numerous manufacturing and service organizations are incorporating lean techniques to identify waste, eliminate non-value-added activities, and increase efficiency. Some small and medium sized enterprises (SMEs) have also incorporated lean principles, yet others remain laggards. There is evidence that suggests if critical success factors (CSFs) exist in SMEs, there is a higher probability of the successful implementation of lean practices. Using a case study approach regarding the successful adoption of lean practices within a SME, this paper validated and tested the credibility of a CSF model. During a 12-month consulting arrangement, the research team used formal and informal observations and ...


Agricultural Worker Injury Comparative Risk Assessment Methodology: Assessing Corn And Biofuel Switchgrass Production Systems, Gretchen A. Mosher, Saxon J. Ryan, Charles V. Schwab Jan 2017

Agricultural Worker Injury Comparative Risk Assessment Methodology: Assessing Corn And Biofuel Switchgrass Production Systems, Gretchen A. Mosher, Saxon J. Ryan, Charles V. Schwab

Agricultural and Biosystems Engineering Publications

Keeping workers safe is a continuing challenge in agricultural production. Risk assessment methodologies have been used widely in other industries to better understand systems and enhance decision making, yet their use in production agriculture has been limited. This article describes the considerations and the approach taken to measure the difference in worker injury risks between two agricultural production systems. A model was developed specifically for the comparison of worker injury risk between corn and biofuel switchgrass production systems. The model is composed of injury and exposure values that were used in a Monte Carlo simulation. The output of this risk ...


Apparent Coefficient Of Friction Of Wheat On Denim, Charles V. Schwab Jan 2017

Apparent Coefficient Of Friction Of Wheat On Denim, Charles V. Schwab

Agricultural and Biosystems Engineering Publications

Calculation of the extraction force for a grain entrapment victim requires a coefficient of friction between the grain and the surface of the victim. Because denim is a common fabric for the work clothes that cover entrapment victims, the coefficient of friction between grain and denim becomes necessary. The purpose of this research was to calculate the apparent coefficient of friction of wheat on denim fabric using a proven procedure. The expectation is to improve the current understanding of conditions that influence extraction forces for victims buried in wheat. The apparent coefficient of friction of wheat on denim fabric was ...


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 ...


Development Of A Quality Decision-Making Scenario To Measure How Employees Handle Out-Of-Condition Grain, Gretchen A. Mosher, Nir Keren, Charles R. Hurburgh Jr. Jan 2013

Development Of A Quality Decision-Making Scenario To Measure How Employees Handle Out-Of-Condition Grain, Gretchen A. Mosher, Nir Keren, Charles R. Hurburgh Jr.

Agricultural and Biosystems Engineering Publications

Quality management systems have been shown to improve inventory management, increase internal efficiencies, and enhance the ability of businesses to meet customer specifications, but little work has explored the role of employee decisions in the success of such systems. This work used the methodology of process-tracing to examine the decision-making process of grain elevator employees (n=164) as they determined how to handle out-of-condition corn. Employees overwhelmingly chose to either follow management orders or to make a non-choice rather than to make a decision which would preserve the quality of the grain. Employees equally emphasized decision-making dimensions of storage risk ...


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 ...


The Effects Of Age And Type Of Carrying Task On Lower Extremity Kinematics, Jason C. Gillette, Catherine A. Stevermer, Ross H. Miller, Stacey A. Meardon, Charles V. Schwab Feb 2010

The Effects Of Age And Type Of Carrying Task On Lower Extremity Kinematics, Jason C. Gillette, Catherine A. Stevermer, Ross H. Miller, Stacey A. Meardon, Charles V. Schwab

Agricultural and Biosystems Engineering Publications

The purpose of this study was to determine the effects of age, load amount and load symmetry on lower extremity kinematics during carrying tasks. Forty-two participants in four age groups (8–10 years, 12–14 years, 15–17 years and adults) carried loads of 0%, 10% and 20% body weight (BW) in large or small buckets unilaterally and bilaterally. Reflective markers were tracked to determine total joint range of motion and maximum joint angles during the stance phase of walking. Maximum hip extension, hip adduction and hip internal rotation angles were significantly greater for each of the child/adolescent age ...


Economic Simulation Modeling Of Reprocessing Alternatives For Corn Masa Byproducts, Kurt A. Rosentrater, Thomas L. Richard, Carl J. Bern, Rolando A. Flores Nov 2003

Economic Simulation Modeling Of Reprocessing Alternatives For Corn Masa Byproducts, Kurt A. Rosentrater, Thomas L. Richard, Carl J. Bern, Rolando A. Flores

Agricultural and Biosystems Engineering Publications

Increasing production of corn masa for tortillas, chips, and related snack foods is resulting in large quantities of organic residuals requiring environmentally sound management. These byproduct streams appear suitable for use as livestock feed material, thus eliminating landfilling costs. Possibilities for developing livestock feed include direct shipping to livestock feeding facilities, blending prior to shipping, extrusion processing, pellet mill processing, and dehydration. To assess the viability of these options for reprocessing masa byproducts as livestock feed materials, an economic model was developed and applied to each of these alternatives. Through a series of simulation runs with this model, it was ...