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Operations Research, Systems Engineering and Industrial Engineering Commons

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Iowa State University

2010

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Articles 1 - 25 of 25

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

Adaptive User Interface For Semi-Automatic Operation: Patent Application, Michael C. Dorneich, Stephen Whitlow, William Rogers, Karen Feigh, Robert E. De Mers Dec 2010

Adaptive User Interface For Semi-Automatic Operation: Patent Application, Michael C. Dorneich, Stephen Whitlow, William Rogers, Karen Feigh, Robert E. De Mers

Industrial and Manufacturing Systems Engineering Patents

A method is provided for semi-automatic operation of a portable control device for a remote-controlled, unmanned vehicle. The method includes the steps of monitoring parameters of an operational environment of the portable control device, switching from a manual operation mode to a semi-automatic operation mode in response to occurrence of predetermined criteria within the operational environment, and presenting a semi-automatic operation graphical user interface to a user of the portable control device. The semi-automatic operation graphical user interface includes a reduced set of user interfaces for the semi-automatic operation mode presented by the portable control device.


Targeting Net Zero Energy At Marine Corps Air Station Miramar: Assessment And Recommendations, Samuel Booth, John Barnett, Kari Burman, Joshua Hambrick, Michael S. Helwig, Robert Westby Dec 2010

Targeting Net Zero Energy At Marine Corps Air Station Miramar: Assessment And Recommendations, Samuel Booth, John Barnett, Kari Burman, Joshua Hambrick, Michael S. Helwig, Robert Westby

Industrial and Manufacturing Systems Engineering Technical Reports and White Papers

In 2008, the Department of Defense (DoD) and Department of Energy (DOE) defined a joint initiative to address military energy use by identifying specific actions to reduce energy demand and increase use of renewable energy on DoD installations. A Task Force comprised of representatives from the Office of the Secretary of Defense (OSD), the four military Services, DOE’s Federal Energy Management Program (FEMP), and the National Renewable Energy Laboratory (NREL) was established. In light of DoD priorities, early attention was given to the possibility of net zero energy military installations (NZEI), that is, installations that would meet their energy ...


Heavy Traffic Analysis Of A Simple Closed-Loop Supply Chain, Arka P. Ghosh, Sarah M. Ryan, Lizhi Wang, Ananda Weerasinghe Nov 2010

Heavy Traffic Analysis Of A Simple Closed-Loop Supply Chain, Arka P. Ghosh, Sarah M. Ryan, Lizhi Wang, Ananda Weerasinghe

Industrial and Manufacturing Systems Engineering Publications

We consider a closed-loop supply chain where new products are produced to order and returned products are refurbished for reselling. The solution to aprice-setting problem enforces the heavy traffic condition, under which we address the production rate control problem for two types of cost functions. Wesolve a drift-control problem for an approximate system driven by a correlated two-dimensional Brownian motion. The solutions to this system are then used to obtain asymptotically optimal control policies. We also conduct a numerical study to explore the effects of different parameters on the optimal production rates and the resulting costs.


The Effect Of Sinusoidal Rolling Ground Motion On Lifting Biomechanics, Xiaopeng Ning, Gary A. Mirka Nov 2010

The Effect Of Sinusoidal Rolling Ground Motion On Lifting Biomechanics, Xiaopeng Ning, Gary A. Mirka

Industrial and Manufacturing Systems Engineering Publications

The objective of this study was to quantify the effects of ground surface motion on the biomechanical responses of a person performing a lifting task. A boat motion simulator (BMS) was built to provide a sinusoidal ground motion (simultaneous vertical linear translation and a roll angular displacement) that simulates the deck motion on a small fishing boat. Sixteen participants performed lifting, lowering and static holding tasks under conditions of two levels of mass (5 and 10 kg) and five ground moving conditions. Each ground moving condition was specified by its ground angular displacement and instantaneous vertical acceleration: A): +6°, −0 ...


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 ...


Ontology-Based Multiplatform Identification Method, Yanfeng Li, Xiaomeng Chang, Janis P. Terpenny, Tracee Gilbert Sep 2010

Ontology-Based Multiplatform Identification Method, Yanfeng Li, Xiaomeng Chang, Janis P. Terpenny, Tracee Gilbert

Center for e-Design Publications

This paper puts forward a multiplatform identification method to overcome the limitations of a single platform strategy when mass customization is required. The method is applied to redesign or consolidate an existing product family. The method consists of four steps: (1) the determination of component values, (2) the estimation of component redesign efforts, (3) the platform component identification, and (4) the formation of multiple platform instances. An ontology-based framework is also provided to facilitate the information representation and the data integration in the identification of multiplatform structure. Once the platforms are identified, an ontology reasoning mechanism verifies the platform sharing ...


A Semantic Information Model For Capturing And Communicating Design Decisions, Justin A. Rockwell, Ian R. Grosse, Sundar Krishnamurty, Jack C. Wileden Sep 2010

A Semantic Information Model For Capturing And Communicating Design Decisions, Justin A. Rockwell, Ian R. Grosse, Sundar Krishnamurty, Jack C. Wileden

Center for e-Design Publications

A semantic information model to improve reuse and communication of engineering design knowledge is presented in this paper. We consider design to be a process involving a sequence of decisions informed by the current state of information. As such, the information model developed is structured to reflect the conceptualizations of engineering design decisions with a particular emphasis on semantically capturing design rationale. Through the approach presented, knowledge reuse is achieved by communicating design rationale. A case study is presented to illustrate two key features of the approach: (1) seamless integration of separate modular domain ontologies and instance knowledge related to ...


Design Heuristics In Ideation Across Engineering And Industrial Design Domains, Seda Mckilligan, Shanna Daly, Colleen M. Seifert, Richard Gonzalez Sep 2010

Design Heuristics In Ideation Across Engineering And Industrial Design Domains, Seda Mckilligan, Shanna Daly, Colleen M. Seifert, Richard Gonzalez

Industrial Design Conference Presentations, Posters and Proceedings

How do designers explore a design space to generate diverse solutions? This work focuses on the identification of design heuristics used in the ideation process in the domains of industrial design and engineering design. Design heuristics are cognitive strategies applied to a design problem to help designers create novel solutions. In a think-aloud protocol, engineers and industrial designers with varying levels of experience were asked to develop multiple concepts for a novel design problem. The results show evidence of frequent heuristic use, and that heuristics are effective in generating diverse, creative, and practical concepts, which, as a result, may stimulate ...


Additive/Subtractive Rapid Pattern Manufacturing For Casting Patterns And Injection Mold Tooling, Matthew C. Frank, Frank Peters, Rajesh Kumar Karthikeyan Aug 2010

Additive/Subtractive Rapid Pattern Manufacturing For Casting Patterns And Injection Mold Tooling, Matthew C. Frank, Frank Peters, Rajesh Kumar Karthikeyan

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

This paper presents a Rapid Pattern Manufacturing system that involves both additive and subtractive techniques whereby slabs are sequentially bonded and milled using layered toolpaths. Patterns are grown in a bottom-up fashion, both eliminating the need for multi-axis operations and allowing small features in deep cavities. Similar approaches exist in the literature; however, this system is able to provide a larger range of both materials and sizes, from smaller conventional injection mold tooling to very large wood or urethane sand casting patterns. This method introduces a novel sacrificial support structure approach by integrating a flask into the pattern build process ...


Patient-Specific Bone Implants Using Subtractive Rapid Prototyping, Matthew C. Frank, Ashish Mukund Joshi, Donald D. Anderson, Thaddeus P. Thomas, M. James Rudert, Yuki Tochigi, J. Lawrence Marsh, Thomas D. Brown Aug 2010

Patient-Specific Bone Implants Using Subtractive Rapid Prototyping, Matthew C. Frank, Ashish Mukund Joshi, Donald D. Anderson, Thaddeus P. Thomas, M. James Rudert, Yuki Tochigi, J. Lawrence Marsh, Thomas D. Brown

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

This research involves the development of rapid manufacturing for patient-specific bone implants using a Subtractive Rapid Prototyping process. The geometry of segmental defects in bone, resulting from traumatic injury or cancerous tumor resection, can be reverse-engineered from medical images (such as CT scans), and then accurate defect fillers can be automatically generated in advanced synthetic or otherwise bioactive/biocompatible materials. This paper presents a general process planning methodology that begins with CT imaging and results in the automatic generation of process plans for a subtractive RP system. This work uniquely enables the rapid manufacturing of implant fillers with several key ...


Development Of A Sales Engineering Program By Collaborating With Industry, David P. Sly, Daniel Paul Bumblauskas, Frank Peters Jun 2010

Development Of A Sales Engineering Program By Collaborating With Industry, David P. Sly, Daniel Paul Bumblauskas, Frank Peters

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

Iowa State University recently established a program in technical sales for engineers. To develop the program, faculty and administrators reached out to an industrial advisory committee comprised of organizations with a vested interest in the program; the organizations that hire students from the College of Engineering for career tracks in technical sales and marketing.

The instructor used a combination of various sales techniques and strategies, from established technical sales programs to frame the syllabus for the course. A detailed course structure, with an associated lesson plan will be presented. A review was conducted of peer institutions with similar technical sales ...


Effects Of Uncertain Fuel Costs On Fossil Fuel And Electric Energy Flows In The Us, Yan Wang, Sarah M. Ryan May 2010

Effects Of Uncertain Fuel Costs On Fossil Fuel And Electric Energy Flows In The Us, Yan Wang, Sarah M. Ryan

Industrial and Manufacturing Systems Engineering Publications

To explore the effects of uncertain fuel costs on the bulk energy flows in the US, we introduce stochastic fuel costs in a generalized network flow model of the integrated electric energy system, including coal, natural gas, and electricity generation. The fuel costs are modeled as discretely distributed random variables. A rolling two-stage recourse stochastic programming approach is employed to simulate the decision process involving uncertain costs with forecast updates. All the data are derived from publicly available information for the years 2002, when natural gas prices rose much higher than forecast, and 2006, when gas prices were lower than ...


Improved Knowledge Management Through First-Order Logic In Engineering Design Ontologies, Paul Witherell, Sundar Krishnamurty, Ian R. Grosse, Jack C. Wileden May 2010

Improved Knowledge Management Through First-Order Logic In Engineering Design Ontologies, Paul Witherell, Sundar Krishnamurty, Ian R. Grosse, Jack C. Wileden

Center for e-Design Publications

This paper presents the use of first-order logic to improve upon currently employed engineering design knowledge management techniques. Specifically, this work uses description logic in unison with Horn logic, to not only guide the knowledge acquisition process but also to offer much needed support in decision making during the engineering design process in a distributed environment. The knowledge management methods introduced are highlighted by the ability to identify modeling knowledge inconsistencies through the recognition of model characteristic limitations, such as those imposed by model idealizations. The adopted implementation languages include the Semantic Web Rule Language, which enables Horn-like rules to ...


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 ...


Demand Price Sensitivity And Market Power In A Congested Fuel And Electricity Network, Sarah M. Ryan Jan 2010

Demand Price Sensitivity And Market Power In A Congested Fuel And Electricity Network, Sarah M. Ryan

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

IN restructured electricity markets, generating companies submit bids to supply electricity at prices based on their marginal costs, which are driven largely by fuel costs. In each regional wholesale power market, an independent system operator (ISO) manages electricity transmission and sets locational marginal prices (LMPs) to match supplies with demands at each location on the constrained grid. To understand the interaction between constraints on fuel supply and constraints on electricity transmission, we recently developed and tested a game theoretic model that combines both sets of constraints [1][2]. It includes (1) costs of extracting and transporting finite supplies of fuels ...


Value Of Condition Monitoring For Optimal Replacement In The Proportional Hazards Model With Continuous Degradation, Xiang Wu, Sarah M. Ryan Jan 2010

Value Of Condition Monitoring For Optimal Replacement In The Proportional Hazards Model With Continuous Degradation, Xiang Wu, Sarah M. Ryan

Industrial and Manufacturing Systems Engineering Publications

This article investigates the value of perfect monitoring information for optimal replacement of deteriorating systems in the Proportional Hazards Model (PHM). A continuous-time Markov chain describes the condition of the system. Although the form of an optimal replacement policy for system under periodic monitoring in the PHM was developed previously, an approximation of the Markov process as constant within inspection intervals led to a counter intuitive result that less frequent monitoring could yield a replacement policy with lower average cost. This article explicitly accounts for possible state transitions between inspection epochs to remove the approximation and eliminate the cost anomaly ...


Welfare Effects Of Expansions In Equilibrium Models Of An Electricity Market With Fuel Network, Sarah M. Ryan, Anthony Downward, Andrew Philpott, Golbon Zakeri Jan 2010

Welfare Effects Of Expansions In Equilibrium Models Of An Electricity Market With Fuel Network, Sarah M. Ryan, Anthony Downward, Andrew Philpott, Golbon Zakeri

Industrial and Manufacturing Systems Engineering Publications

The welfare of electricity producers and consumers depends on congestion in the transmission grid, generation costs that consist mainly of fuel costs, and strategic behavior. We formulate a game theoretic model of an oligopolistic electricity market where generation costs are derived from a fuel supply network. The game consists of a fuel dispatcher that transports fuels at minimum cost to meet generator demands, generators that maximize profit in Cournot competition, and an independent system operator (ISO) that sets nodal prices to balance electricity supply with linear demand functions. We prove the existence of an equilibrium. If fuel supplies are unlimited ...


Elementary Statistical Methods And Measurement Error, Stephen B. Vardeman, Joanne Wendelberger, Tom Burr, Michael S. Hamada, Leslie M. Moore, Marcus Jobe, Max Morris, Huaiqing Wu Jan 2010

Elementary Statistical Methods And Measurement Error, Stephen B. Vardeman, Joanne Wendelberger, Tom Burr, Michael S. Hamada, Leslie M. Moore, Marcus Jobe, Max Morris, Huaiqing Wu

Industrial and Manufacturing Systems Engineering Publications

How the sources of physical variation interact with a data collection plan determines what can be learned from the resulting dataset, and in particular, how measurement error is reflected in the dataset. The implications of this fact are rarely given much attention in most statistics courses. Even the most elementary statistical methods have their practical effectiveness limited by measurement variation; and understanding how measurement variation interacts with data collection and the methods is helpful in quantifying the nature of measurement error. We illustrate how simple one- and two-sample statistical methods can be effectively used in introducing important concepts of metrology ...


Hand-Hold Location And Trunk Kinematics During Box Handling, Omid Haddad, Gary Mirka Jan 2010

Hand-Hold Location And Trunk Kinematics During Box Handling, Omid Haddad, Gary Mirka

Industrial and Manufacturing Systems Engineering Publications

Trunk kinematics variables have been shown to be related to low back injury risk during lifting tasks and it was hypothesised that changes in hand-hold positions could influence trunk kinematics and thereby risk. Fourteen subjects lifted a 5 or 10 kg box using four different hand placement locations (two symmetric and two asymmetric) while their trunk kinematics (position, velocity and acceleration in the sagittal, coronal and transverse planes) were captured using the lumbar motion monitor (LMM). These kinematics data were then used to calculate the probability of high risk group membership (PHRGM) as defined in the LMM risk assessment model ...


The Effects Of Horizontal Load Speed And Lifting Frequency On Lifting Technique And Biomechanics, Boyi Dai, Sangeun Jin, Xiaopeng Ning, Gary Mirka Jan 2010

The Effects Of Horizontal Load Speed And Lifting Frequency On Lifting Technique And Biomechanics, Boyi Dai, Sangeun Jin, Xiaopeng Ning, Gary Mirka

Industrial and Manufacturing Systems Engineering Publications

Lifting loads that have a horizontal velocity (e.g. lifting from a conveyor) is often seen in industry and it was hypothesised that the inertial characteristics of these loads may influence lifting technique and low back stress. Seventeen male participants were asked to perform lifting tasks under conditions of four horizontal load speeds (0 m/s, 0.7 m/s, 1.3 m/s and 2.4 m/s) and two lifting frequencies (10 and 20 lifts/min) while trunk motions and trunk muscle activation levels were monitored. Results revealed that increasing horizontal load speed from 0 m/s to ...


An Empirical Validation Of A Base-Excitation Model To Predict Harvestable Energy From A Suspended-Load Backpack System, Xu Xu, Simon M. Hsiang, Gary Mirka Jan 2010

An Empirical Validation Of A Base-Excitation Model To Predict Harvestable Energy From A Suspended-Load Backpack System, Xu Xu, Simon M. Hsiang, Gary Mirka

Industrial and Manufacturing Systems Engineering Publications

Suspended-load backpacks have been proposed as a way to provide power for small electronic devices by capturing the mechanical energy generated by the vertical movement of the suspended load and converting it into electrical energy. The aim of the current study was to build a base excitation model able to predict the relative velocity of the load (an index of the amount of harvestable energy of such a system) using as inputs the mass of the suspended load, the walking speed and the leg length of the user. Nine human participants walked on a treadmill under two load conditions (15 ...


Designing Hands-On Teaming Activities: Exploring Sustainability Tradeoffs For Courses With Large Enrollments, Christopher R. Williams, Lisa D. Mcnair, Erin D. Crede, Marie C. Paretti, Janis P. Terpenny Jan 2010

Designing Hands-On Teaming Activities: Exploring Sustainability Tradeoffs For Courses With Large Enrollments, Christopher R. Williams, Lisa D. Mcnair, Erin D. Crede, Marie C. Paretti, Janis P. Terpenny

Center for e-Design Publications

In this paper, the authors explore sustainability issues that exist in the development of hands-on activities for classes with large enrollments. Specifically, the authors study four different teambuilding activities, all with varying levels of resource commitment, to assess potential tradeoffs between cost, environmental impact, and learning objectives pertaining to design and teaming. Faced with several alternatives and multiple, conflicting objectives, the authors approach this choice from a design context. Specifically, following the identification of activity constraints and objectives, activity alternatives are evaluated against several metrics with post-activity student surveys. Survey data is then translated into an appropriate input for a ...