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

A Multi-Stage Optimization Model For Flexibility In Engineering Design, Ramin Giahi, Cameron A. Mackenzie, Chao Hu Jan 2019

A Multi-Stage Optimization Model For Flexibility In Engineering Design, Ramin Giahi, Cameron A. Mackenzie, Chao Hu

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

Engineered systems often operate in uncertain environments. Understanding different environments under which a system will operate is important in engineering design. Thus, there is a need to design systems with the capability to respond to future changes. This research explores designing a hybrid renewable energy system while taking into account long-range uncertainties of 20 years. The objective is to minimize the expected cost of the hybrid renewable energy system over the next 20 years. A design solution may be flexible, which means that the design can be adapted or modified to meet different scenarios in the future. The value of ...


Optimizing Design For Resilience For Risk-Averse Firms Using Expected Utility And Value-At-Risk, Ramin Giahi, Cameron A. Mackenzie, Chao Hu May 2018

Optimizing Design For Resilience For Risk-Averse Firms Using Expected Utility And Value-At-Risk, Ramin Giahi, Cameron A. Mackenzie, Chao Hu

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

Research Problem •Determine how resilience should be integrated into a firm’s design decisions •Optimize design for a risk-averse firm that incorporates resilience


Online Testing To Assess Performance Of Students In A Large Engineering Class, Vrishtee Rane, Cameron A. Mackenzie May 2018

Online Testing To Assess Performance Of Students In A Large Engineering Class, Vrishtee Rane, Cameron A. Mackenzie

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

Fall 2017: Engineering Economic Analysis course •242 students: in-class and distance learning •New assessment procedure: Online testing modules •7 required online testing modules •2 bonus testing modules to earn an A •Semester grades determined completely by number of modules passed •Unlimited number of attempts for each testing module •Randomly chosen questions


Modeling Uncertainty In Rooftop Pv Investment, Anuj Mittal, Cameron A. Mackenzie, Caroline C. Krejci, Taylor B. Elkins May 2018

Modeling Uncertainty In Rooftop Pv Investment, Anuj Mittal, Cameron A. Mackenzie, Caroline C. Krejci, Taylor B. Elkins

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

No abstract provided.


Supply Chain Risk Analysis Using Dynamic Fault Tree, Xue Lei, Cameron A. Mackenzie May 2018

Supply Chain Risk Analysis Using Dynamic Fault Tree, Xue Lei, Cameron A. Mackenzie

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

Outline: 1. Motivations 2. Main-backup supply chain 3. Mutual-assistance supply chain 4. Conclusions


Decision Making For Different Types Of Variation In A Manufacturing System, Xue Lei, Cameron A. Mackenzie, Caroline Krejci May 2018

Decision Making For Different Types Of Variation In A Manufacturing System, Xue Lei, Cameron A. Mackenzie, Caroline Krejci

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

Common cause variation: Natural part of the process; Acting on process.

Special cause variation: From external sources; searching and mitigating causes.


Design Optimization Under Long-Range Uncertainty, Ramin Giahi, Cameron A. Mackenzie, Chao Hu May 2018

Design Optimization Under Long-Range Uncertainty, Ramin Giahi, Cameron A. Mackenzie, Chao Hu

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

Flexibility in engineering system design: •Flexibility in system design and implications for aerospace systems (Saleh et.al 2003) •A flexible and robust approach for preliminary engineering design based on designer's preference (Nahmet.al, 2007) •A real options approach to hybrid electric vehicle architecture design for flexibility (Kang et.al 2016) •Our research: •Simulation optimization •Long range uncertainty •Add flexibility and robustness to design


Application Of Bayesian Belief Network For Agile Kanban Backlog Estimation, Eric D. Weflen, Kevin Korniejczuk, Sharon Lau, Steven S. Kryk, Cameron A. Mackenzie, Iris V. Rivero Jan 2018

Application Of Bayesian Belief Network For Agile Kanban Backlog Estimation, Eric D. Weflen, Kevin Korniejczuk, Sharon Lau, Steven S. Kryk, Cameron A. Mackenzie, Iris V. Rivero

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

What is Agile Kanban?

  • Different from Kanban for JIT manufacturing!
  • Visualization of workflow
  • Limit work in process (WIP)


A Design Framework For Additive Manufacturing Through The Synergistic Use Of Axiomatic Design Theory And Triz, Sarath C. Renjith, Gül E. Okudan Kremer, Kijung Park Jan 2018

A Design Framework For Additive Manufacturing Through The Synergistic Use Of Axiomatic Design Theory And Triz, Sarath C. Renjith, Gül E. Okudan Kremer, Kijung Park

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

Additive manufacturing has emerged as an integral part of modern manufacturing because of its unique capabilities for rapid prototyping and the design flexibility. In order to take full advantage of additive manufacturing, Design for Additive Manufacturing (DfAM) has risen to provide design frameworks, methodologies, and a set of guidelines for effective product designs under additive manufacturing. However, the existing DfAM methods have limitations in that most methods rely on either too general or too specific design requirements and parameters for additive manufacturing; an effective design framework that can consider the capabilities and constraints of additive manufacturing at an early design ...


An Investigation On Selected Factors That Cause Variability In Additive Manufacturing, Anusha Velineni, Elif Elçin Günay, Kijung Park, Gül E. Okudan Kremer, Thomas M. Schnieders, Richard T. Stone Jan 2018

An Investigation On Selected Factors That Cause Variability In Additive Manufacturing, Anusha Velineni, Elif Elçin Günay, Kijung Park, Gül E. Okudan Kremer, Thomas M. Schnieders, Richard T. Stone

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

Additive manufacturing (AM) brings significant freedom in design, yet it can get hard to produce the same part at identical dimensional tolerances; this is also known as the reproducibility problem. Reproducibility, the ability to produce the same part under similar conditions, is one of the major challenges in AM as reproducibility plays an important role in the replacement of worn-out or damaged parts in an assembly. The objective of this paper is to identify the impacts of two most common factors (i.e., layer thickness and printing speed) on the dimensional accuracy of additively manufactured parts through a designed experiment ...


The Challenges Of Building Intelligent Tutoring Systems For Teams, Desmond Bonner, Stephen B. Gilbert, Michael C. Dorneich, Eliot Winer, Anne M. Sinatra, Anna Slavina, Anastacia Macallister, Joseph Holub Sep 2016

The Challenges Of Building Intelligent Tutoring Systems For Teams, Desmond Bonner, Stephen B. Gilbert, Michael C. Dorneich, Eliot Winer, Anne M. Sinatra, Anna Slavina, Anastacia Macallister, Joseph Holub

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

Intelligent Tutoring Systems have been useful for individual instruction and training, but have not been widely created for teams, despite the widespread use of team training and learning in groups. This paper reviews two projects that developed team tutors: the Team Multiple Errands Task (TMET) and the Recon Task developed using the Generalized Intelligent Framework for Tutoring (GIFT). Specifically, this paper 1) analyzes why team tasks have significantly more complexity than an individual task, 2) describes the two team-based platforms for team research, and 3) explores the complexities of team tutor authoring. Results include a recommended process for authoring a ...


Homcam: A Wireless 360-Degree Wearable Streaming Camera For Remote Situational Awareness, Brian Peck, Stephen Gilbert, Eliot Winer, Robert Ray Sep 2016

Homcam: A Wireless 360-Degree Wearable Streaming Camera For Remote Situational Awareness, Brian Peck, Stephen Gilbert, Eliot Winer, Robert Ray

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

The growth of mobile and wearable technologies has enabled a host of new applications, including remote situational awareness, in which a device worn by a remote partner can simulate being present in the remote location for an observer. We illustrate this idea by constructing the HomCam, a helmet-based omnidirectional video system that gives an observer the 360-degree perspective of a remote wearer. To our knowledge, the HomCam was the first wearable system that enabled real-time streaming of 360-degree video to a remote location built from commercial-of-the-shelf hardware. This paper describes related efforts, the HomCam prototype, its visual display, and an ...


An Agricultural Harvest Knowledge Survey To Distinguish Types Of Expertise, Chase Meusel, Chase Grimm, Stephen B. Gilbert, Greg R. Luecke Sep 2016

An Agricultural Harvest Knowledge Survey To Distinguish Types Of Expertise, Chase Meusel, Chase Grimm, Stephen B. Gilbert, Greg R. Luecke

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

Gaining insight into the unique characteristics of participants during user research is a valuable tool for both recruitment and understanding differences within the target population. This work describes an agricultural harvest knowledge survey that was created for user research studies that observed experienced combine operators driving a combine simulator in virtual crop fields. Two variations of the survey were designed, utilized, and evaluated in two separate studies. Both studies found a difference between low and high knowledge operators' performance on the knowledge survey in addition to performance differences. Based on the success of this survey as a population segmentation tool ...


The Wear Scale: Developing A Measure Of The Social Acceptability Of A Wearable Device, Norene Kelly, Stephen B. Gilbert Jan 2016

The Wear Scale: Developing A Measure Of The Social Acceptability Of A Wearable Device, Norene Kelly, Stephen B. Gilbert

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

The factors affecting the social acceptability of wearable devices are not well understood, yet they have a strong influence on whether a new wearable succeeds or fails. Factors uniquely affecting wearable acceptability as compared to other technology include manners, moral codes, the symbolic communication of dress, habits of dress, fashion, context of use, form, and aesthetics. This paper describes the development of the WEarable Acceptability Range (WEAR Scale), designed to predict acceptance of a particular wearable. First, the construct "social acceptability of a wearable" was defined using literature and an interview study. Second, the WEAR Scale's item pool was ...


The Hidden Challenges Of Team Tutor Development, Desmond Bonner, Anna Slavina, Anastacia Macallister, Joseph Holub, Stephen B. Gilbert, Anne M. Sinatra, Michael C. Dorneich, Eliot H. Winer Jan 2016

The Hidden Challenges Of Team Tutor Development, Desmond Bonner, Anna Slavina, Anastacia Macallister, Joseph Holub, Stephen B. Gilbert, Anne M. Sinatra, Michael C. Dorneich, Eliot H. Winer

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

This paper describes the unexpected challenges of team tutor development such as the task and logistics. Previously, a research team from Iowa State University (ISU) working with the U.S. Army Research Laboratory (ARL) developed the reconnaissance (Recon) task for simple team tutoring with the Generalized Intelligent Framework for Tutoring (GIFT) (Bonner et al., 2015; Gilbert et al., 2015). Considerations were included for the testing environment such as audio-based team interactions, initialization of the scenario simultaneously, and the inclusion of eyetracking and screen capture technology. Throughout the process of tutor development, several computational challenges have been encountered such as the ...


Operator-Centered Task Analysis: A Hybrid Methodology For Human-Machine Interaction Observation In The Field, Chase Meusel, Norene Kelly, Stephen Gilbert, Michael Dorneich, Brian Gilmore, Bruce Newendorp Sep 2015

Operator-Centered Task Analysis: A Hybrid Methodology For Human-Machine Interaction Observation In The Field, Chase Meusel, Norene Kelly, Stephen Gilbert, Michael Dorneich, Brian Gilmore, Bruce Newendorp

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

The practice of human factors in agriculture presents numerous challenges for the researcher. Difficulties include measuring operator behaviors in the agricultural field as well as identifying individual tasks, order of tasks, length of tasks, and operator motivation for each task. To confidently build a baseline for how operators use and appropriate their resources during the planting agricultural season, a variety of qualitative and quantitative research methods were combined to create OCTA (operator-centered task analysis), a hybrid methodology to observe, document, explain, and potentially predict operator behaviors in the field. The OCTA model draws from four main methodologies: observation, interview, behavioral ...


Characterization Of Information Automation On The Flight Deck, Rachel Dudley, Michael C. Dorneich, Emmanuel Letsu-Dake, William Rogers, Stephen D. Whitlow, Michael Dillard, Erik Nelson Jan 2014

Characterization Of Information Automation On The Flight Deck, Rachel Dudley, Michael C. Dorneich, Emmanuel Letsu-Dake, William Rogers, Stephen D. Whitlow, Michael Dillard, Erik Nelson

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

This paper summarizes the results of analyses to identify characteristics of flight deck information automation systems which can lead to potential human factors issues. Information automation systems are responsible for the collection, processing, analysis, and presentation of information to the flightcrew. Information automation systems can pose human factors issues and challenges particular to this type of automation. This paper presents a formal definition of information automation and identifies characteristics and associated human factors issues in the domain of aircraft flight deck systems. A method was developed to identify a set of consistent and independent characteristics of information automation. Characteristics, a ...


Using Industry To Drive Continuous Improvement In Capstone Design, Leslie Potter May 2012

Using Industry To Drive Continuous Improvement In Capstone Design, Leslie Potter

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

Iowa State University’s Industrial and Manufacturing Systems Engineering (IMSE) Department has been teaching and practicing continuous improvement for many years. Since 2003, a formal process for curriculum assessment related to ABET outcome items [a-k] and departmental outcome items [l-p] has been in place. This process has provided structure for obtaining, documenting, and using feedback from stakeholders, including students, alumni, faculty, and industry. Quantitative feedback is received through stakeholder surveys and outcome item assessment. Qualitative feedback is received from capstone design industry partners, alumni working in industry, and the IMSE Industrial Advisory Board. The IMSE capstone design course (IE441) has ...


Developing Students’ Understanding Of Global Issues Through Lean Manufacturing, Frank E. Peters, Leslie Potter, Kyung J. Min Jan 2008

Developing Students’ Understanding Of Global Issues Through Lean Manufacturing, Frank E. Peters, Leslie Potter, Kyung J. Min

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

While traditional international exchange programs provide valuable experience for engineering students, they are neither within reach nor practical for all students. An innovative course was developed and executed Spring 2007 to provide engineering students with an intense international experience. This course is aimed at strengthening ABET outcome item (h) [the broad education necessary to understand the impact of engineering solutions in a global, economic, environmental, and societal context]. Additionally, the course provides students the opportunity to practice contemporary, industry-relevant skills by exploring lean manufacturing, including tools, philosophies, and current literature. In the first offering of the course, fifteen students participated ...


Selection Of Products And Prices In Manufacturing And Remanufacturing Environment, Sasidhar Malladi, K. Jo Min Jan 2005

Selection Of Products And Prices In Manufacturing And Remanufacturing Environment, Sasidhar Malladi, K. Jo Min

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

In this paper, we consider a manufacturer who produces both new and remanufactured products facing a group of heterogeneous customers who self-select their optimal choices of products. Under such circumstances, we formulate a mathematical programming model that determines the products, prices, and acquisition prices for used products. Based on this model, we will discuss conditions under which remanufacturing can be encouraged.


Coordinating Forward And Reverse Flows Of Products For A Manufacturer-Retailer Supply Chain Model, Jie Li, K. Jo Min Jan 2005

Coordinating Forward And Reverse Flows Of Products For A Manufacturer-Retailer Supply Chain Model, Jie Li, K. Jo Min

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

In this paper, we formulate and analyze a manufacturer-retailer supply chain model with product remanufacturing. This model takes into account both forward flow of the new product as well as reverse flow of the used product. Specifically, we assume that the manufacturer can control the wholesale price of the new product as well the transfer price of the used product from the retailer while the retailer can control the retail price of the new product and the collecting price of the used product. Under this assumption, we compare and contrast the coordinated scenario vs. the uncoordinated scenario. Managerial insights and ...


The Use Of Sacrificial Support Structures In A Rapid Machining Process, Wutthigrai Boonsuk, Matthew C. Frank Jan 2005

The Use Of Sacrificial Support Structures In A Rapid Machining Process, Wutthigrai Boonsuk, Matthew C. Frank

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

Rapid prototyping techniques for CNC machining have been developed in an effort to produce functional prototypes in appropriate materials. One of the major challenges is to develop an automatic fixturing system for the part during the milling process. The current proposed method, sacrificial support fixturing, is similar to the support structures used in existing rapid processes, such as Stereolithography. During the machining process, the sacrificial supports emerge incrementally and, at the end of the process, are the only entities connecting the part to the stock material. In this paper, we propose methodologies for the design of sacrificial support structures for ...


Allocation And Inventory Policies For Reels In Printed Circuit Board Assemblies, Abhishek Bandyopadhyay, Sachin Sulakhe, Sasidhar Malladi, Viveck Rao, Krishna Lakshminarasimhan, K. Jo Min Jan 2003

Allocation And Inventory Policies For Reels In Printed Circuit Board Assemblies, Abhishek Bandyopadhyay, Sachin Sulakhe, Sasidhar Malladi, Viveck Rao, Krishna Lakshminarasimhan, K. Jo Min

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

In Printed Circuit Board (PCB) assemblies, various types of reels loaded with different components are extensively utilized. We examine the inventory and allocation policies across assembly lines when the number and size of the reels substantially affect the assembly efficiency (e.g., when the number of available slots in a chip shooter is relatively limited). Critical features of the policies are illustrated via numerical examples.


A New Analytical Evaluation Model For Kanban Controlled Systems With Fork/Join Synchronization Stations, Heedong Kim, Sarah M. Ryan Jan 2002

A New Analytical Evaluation Model For Kanban Controlled Systems With Fork/Join Synchronization Stations, Heedong Kim, Sarah M. Ryan

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

A nonlinear programming model is developed for analyzing the queuing model of a kanban controlled system with fork/join synchronization stations. The model finds the minimum number of kanbans for a given throughput requirement or the maximum throughput for a given number of kanbans, where servers have different exponential service times. Furthermore, it aids understanding of kanban systems.