Open Access. Powered by Scholars. Published by Universities.®

Engineering Commons

Open Access. Powered by Scholars. Published by Universities.®

Articles 1 - 30 of 32

Full-Text Articles in Engineering

Design Thinking: An Approach With Various Perceptions, Sanne Bouwman, Jesper Voorendt, Boris Eisenbart, Seda Mckilligan Aug 2019

Design Thinking: An Approach With Various Perceptions, Sanne Bouwman, Jesper Voorendt, Boris Eisenbart, Seda Mckilligan

Industrial Design Conference Presentations, Posters and Proceedings

Design Thinking has become increasingly popular across different disciplines. However, what it exactly entails is becoming more and more vague, leading to the term being used for many different approaches and applications. This paper presents an interview study with experts on the application and training of Design Thinking in academia and industry. We find a divide with some seeing Design Thinking as a mere toolbox of methods, while others see it as an umbrella term for the mindset that determines how designers think and act. Subjects unanimously attest the approach large potential to support certain types of businesses, when applied ...


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 ...


Shoulder Muscular Fatigue From Static Posture Concurrently Reduces Cognitive Attentional Resources, Mitchell L. Stephenson, Alec G. Ostrander, Hamid Norasi, Michael C. Dorneich Jun 2019

Shoulder Muscular Fatigue From Static Posture Concurrently Reduces Cognitive Attentional Resources, Mitchell L. Stephenson, Alec G. Ostrander, Hamid Norasi, Michael C. Dorneich

Industrial and Manufacturing Systems Engineering Publications

Objective: The goal of this work is to determine whether muscular fatigue concurrently reduces cognitive attentional resources in technical tasks for healthy adults.

Background: Muscular fatigue is common in the workplace but often dissociated with cognitive performance. A corpus of literature demonstrates a link between muscular fatigue and cognitive function, but few investigations demonstrate that the instigation of the former degrades the latter in a way that may affect technical task completion. For example, laparoscopic surgery increases muscular fatigue, which may risk attentional capacity reduction and undermine surgical outcomes.

Method: A total of 26 healthy participants completed a dual-task cognitive ...


Nutrient Storage Cover, Nick Jamison, Cole Reighard, Andy Russ, Shweta Chopra, Jacek A. Koziel Apr 2019

Nutrient Storage Cover, Nick Jamison, Cole Reighard, Andy Russ, Shweta Chopra, Jacek A. Koziel

TSM 416 Technology Capstone Projects

Smithfield Hog Production has several processing facilities across the state of Iowa along with numerous contract finishing farms where producers grow their pigs. The hog manure on these sites is pumped into a slurry store for storage. A slurry store is a 1.2-million-gallon round tank that is 18-feet-tall and 120-foot diameter. Since the slurry store is open to the weather, it accumulates rain, snow, and other types of precipitation.

While evaporation generally equals precipitation, there are some years where precipitation is greater than evaporation. The result is a reduction in manure holding capacity and additional cost to hog production ...


Conduction Maize Drying For Emerging African Communities, Todd Van Dyke, Brett Olson, Jacob Titmus, Michael Shippy, Shweta Chopra, Jacek A. Koziel Apr 2019

Conduction Maize Drying For Emerging African Communities, Todd Van Dyke, Brett Olson, Jacob Titmus, Michael Shippy, Shweta Chopra, Jacek A. Koziel

TSM 416 Technology Capstone Projects

Currently, in emerging African Communities, they are putting their maize out on mats to be dried under the sun. They are having problems with animals and humans stealing their produce along with maize weevils destroying their crops. Our objective is to create a mobile and efficient system that can dry grain on a need basis. It also needs to be made from materials that are easily obtained in these communities. The product will not be able to utilize electricity or gas to the main source of fuel will be fire. This is not the first time that this problem is ...


Cardinal Ig: Keying Process, Jacob Raveling, Benjamin Shaver, Mary Gail Knutson, Shweta Chopra, Jacek A. Koziel Apr 2019

Cardinal Ig: Keying Process, Jacob Raveling, Benjamin Shaver, Mary Gail Knutson, Shweta Chopra, Jacek A. Koziel

TSM 416 Technology Capstone Projects

The current process for setting guide keys into aluminum extrusions is performed manually. It is a tedious and unergonomic process. The team needs to evaluate the process for improvement or replacement.

The keying process is done by hand. Each key has to be placed in a channel one by one. Then keys are secured into the channels by using a wooden block which is smashed against the keys. This process is taking too much time, and it is hard on the employee’s hands. When attempting to secure the keys in the channels, a hole begins to wear into their ...


Process Improvement For Material Breakdown, Kirshanthi Ganesa Moorthy, Michael Patten, Matthew Klug, Steven Brousseau, Shweta Chopra, Jacek A. Koziel Apr 2019

Process Improvement For Material Breakdown, Kirshanthi Ganesa Moorthy, Michael Patten, Matthew Klug, Steven Brousseau, Shweta Chopra, Jacek A. Koziel

TSM 416 Technology Capstone Projects

  • Cardinal Glass Industries is a management-owned S-Corporation. They develop residential glass for windows and doors. Cardinal Glass has around 6000 employees in 37 locations across the United States and two research centers located in Wisconsin and Minnesota. Their goal is to design and fabricate the most advanced residential glass products in the industry.
  • The problem that they are facing right now is maximizing the efficiency of cutting down foam blocks and sponge material. The foam blocks are used during the key-in process while the sponge material is used for wiping excess glue off the glass.


Cost Analysis Of Swine Manure Separation, Lucas Meyer, Mason Moeller, Todd Muell, Shweta Chopra, Jacek A. Koziel Apr 2019

Cost Analysis Of Swine Manure Separation, Lucas Meyer, Mason Moeller, Todd Muell, Shweta Chopra, Jacek A. Koziel

TSM 416 Technology Capstone Projects

Smithfield Foods Inc. was founded in 1936 by Joseph W. Luter and his son Joseph W. Luter, Jr., with the name Smithfield Packing Company. The company name was later changed to Smithfield Foods in 1974. Smithfield Foods Inc. is quite proud of their guiding principles (Responsibility, Operational Excellence & Innovation) and this small excerpt defines their company as a whole, “We will seek fresh ideas in all aspects of business, including ways to work smarter, serve customers better, and make Smithfield a better company.” (Smithfield Foods, 2019).

The issue that we worked on was how swine producers want to decrease the inefficiency of hauling raw manure slurry and increase manure application systems by separating solids and liquids produced in a typical shallow pit barn with an external manure storage system. There is a moderate amount of research that has been done on swine manure separation, but quite a bit of it is outdated. The current application of raw manure slurry is altogether expensive and inefficient by the traditional method of transporting the manure by large tanks, while post-separated manure could be transported further distances more efficiently. The increasing manure application possibilities and transporting regulations have been a large part of the project in the context of the future of swine production.

Given the elements of the project:

  • Minimal research has been completed on current swine manure separation methods
  • Manure separation is expensive, and its feasibility is all dependent on a producer's budget and the overall size of their operation
  • Multiple costs associated with implementing a separation method (Solid & liquid storage, separation equipment, additional labor, etc.)

It is critical for producers/growers to comprehend the true benefits of implementing a separation method at this time before future regulations become required. The cost analysis tool will give producers the capability to view several costs associated with a particular separation method. When adopting a separation method, there two important benefits; higher efficiency of transporting manure farther distance and the cost-effectiveness increase tremendously.


Hagie Warehouse Consolidation, Nick Mignery, Keagan Hedrick, Christopher Sjoblom, Vincent Breedlove, Shweta Chopra, Jacek A. Koziel Apr 2019

Hagie Warehouse Consolidation, Nick Mignery, Keagan Hedrick, Christopher Sjoblom, Vincent Breedlove, Shweta Chopra, Jacek A. Koziel

TSM 416 Technology Capstone Projects

  • Hagie Manufacturing is a small manufacturer of agricultural sprayers that recently partnered with John Deere. They have a manufacturing and storage facility in central Iowa.
  • Hagie Manufacturing is having difficulty using their current organization system of parts and how to pick them to meet their increased goal of building more (33%) sprayers a day.
  • This is creating a problem for the company because parts are in multiple locations which makes it difficult to quickly get parts to where they are needed in a correct rotating habit efficiently.
  • This project will immediately affect the workers of warehouse one and five on ...


Danfoss Journal Bearing Removal, Chad Martin, Lucas Kramer, Matt Johnson, Ben Gibson, Shweta Chopra, Jacek A. Koziel Apr 2019

Danfoss Journal Bearing Removal, Chad Martin, Lucas Kramer, Matt Johnson, Ben Gibson, Shweta Chopra, Jacek A. Koziel

TSM 416 Technology Capstone Projects

Danfoss Power Solutions is a global leader in the mobile hydraulic power market. As a key supplier to some of the world’s most recognized names in construction and agricultural machinery, Danfoss’s market share includes remanufactured hydraulic pumps and motors. Parts and Service is responsible for producing these remanufactured units and continues to encounter and overcome challenges unique to remanufacturing. One such problem is the removal of journal bearings from the pump and motor castings.

Journal bearings are thin, press-fit bushings that provide a bearing surface for shafts in low load locations. Most bearings are installed in blind holes ...


Grain Cart Compaction Impact, Kyle Lafrenz, Harrison Kruse, Tyler Ehlers, Shweta Chopra, Jacek A. Koziel Apr 2019

Grain Cart Compaction Impact, Kyle Lafrenz, Harrison Kruse, Tyler Ehlers, Shweta Chopra, Jacek A. Koziel

TSM 416 Technology Capstone Projects

  • Many factors influence the yield. Harvest is a busy time, and often there is not clear direction or guidance on where to drive or not drive the Grain Cart or other heavy equipment. Path of travel is something that could be changed by educating operators and growers on the benefits and tools they can use.
  • Traffic in the field has inconsistent patterns across the field to minimize time to and from the combine. It is not clear where to place the “path” to the loading area. The heavy axle loads when full can and do contribute to compaction. It is ...


Improving Agricultural Practices Through Water-Flow Modeling And Visualization, Warren Jennings, Riley Nylin, Josh Pederson, James Pollock, Shweta Chopra, Jacek A. Koziel Apr 2019

Improving Agricultural Practices Through Water-Flow Modeling And Visualization, Warren Jennings, Riley Nylin, Josh Pederson, James Pollock, Shweta Chopra, Jacek A. Koziel

TSM 416 Technology Capstone Projects

Current farming tools do not provide an easy solution for water-flow modeling or visualization; therefore, farmers are not aware of what happens in their fields following rainfall events.

Our client, Cedar Valley Innovation (CVI), is a small company owned and operated by Bob Recker out of Waterloo, IA. CVI has supported several projects related to water flow, erosion, and alternative planting in the past including "Row Crop Headland Management Economic Opportunity: Applicator Pathway” and "Alternative Sources of Accurate Agricultural Topography." Mr. Recker’s main focus is on improving the farmer’s triple bottom line of a sustainable income, feeding the ...


Donaldson Single-Piece Flow, Ryan Hood, Miles Martin, Michael Shultz, Shweta Chopra, Jacek A. Koziel Apr 2019

Donaldson Single-Piece Flow, Ryan Hood, Miles Martin, Michael Shultz, Shweta Chopra, Jacek A. Koziel

TSM 416 Technology Capstone Projects

The client for this project is Donaldson Company. They have nearly 12,000 employees worldwide specializing in the production of filters and filter readers that are used in many industries. This project took place at Donaldson’s Waterloo, Iowa facility.

The Capstone team has been tasked to update their oldest and least changed Mechanical Air production line from a batch process to a single-piece flow. The current line utilizes too much overtime to meet demand, and Donaldson would like us to solve that without the addition of more operators. Donaldson wants to consolidate space to make room for new product ...


Automated Finishing Pig Feeder Adjustment, Ryan Godfredsen, Kelley Mabeus, Michael Meyer, Brett C. Ramirez, Shweta Chopra, Jacek A. Koziel Apr 2019

Automated Finishing Pig Feeder Adjustment, Ryan Godfredsen, Kelley Mabeus, Michael Meyer, Brett C. Ramirez, Shweta Chopra, Jacek A. Koziel

TSM 416 Technology Capstone Projects

Feed costs in the swine industry are typically 60-70% of the total swine production costs. Feeder adjustment is used to decrease feed costs. When feeders are properly adjusted, the growth rate can be improved while the wasted feed is minimized. Currently, feeders are manually monitored and adjusted by daily caretaker inspection, which is very laborious. Automated adjustment would reduce labor need and allow for the integration of precision management in the future.


Grain Drying Test Stand, Luke Fischer, Travis Hursh, Riley Schnell, Jet Wayne, Shweta Chopra, Jacek A. Koziel Apr 2019

Grain Drying Test Stand, Luke Fischer, Travis Hursh, Riley Schnell, Jet Wayne, Shweta Chopra, Jacek A. Koziel

TSM 416 Technology Capstone Projects

  • Dr. Dirk Maier is a post-harvest engineering professor at Iowa State University and wants to expand the grain processing program
  • A continuous-flow grain dryer for labs and research is needed.
  • The dryer is to be designed, built, and configured all from scratch by the capstone team, implementing the designs and specifications Dr. Maier requires.
  • Our dryer will be finished by the next technology capstone team and be used by classes to come.
  • This project’s broader scope and initial capstone stages were developed from two previous capstone projects, referenced below.


Makusafe Corporation Device Testing, Nicholas Campbell, Alexander Foust, Dawson Knapp, Andrew Yi, Shweta Chopra, Jacek A. Koziel Apr 2019

Makusafe Corporation Device Testing, Nicholas Campbell, Alexander Foust, Dawson Knapp, Andrew Yi, Shweta Chopra, Jacek A. Koziel

TSM 416 Technology Capstone Projects

MakuSafe is a startup company based out of West Des Moines, Iowa with a focus on worker safety. They have developed a wearable safety monitoring device that aims to improve workplace safety by monitoring the environmental conditions, as well as slips, trips, falls, near misses, and other potential hazards around the worker. A safety manager can then review this data and take proactive steps to improve the work environment. The device is mounted in a holster that is worn on the arm of an individual. MakuSafe needs data collected on the force required to break the holster away from a ...


Vertical Lathe Tooling Optimization, Garrett Deschaine, Nicholas Gambs, Brendan Maye, Graham Fiebiger, Theodore Payne, Shweta Chopra, Jacek A. Koziel Apr 2019

Vertical Lathe Tooling Optimization, Garrett Deschaine, Nicholas Gambs, Brendan Maye, Graham Fiebiger, Theodore Payne, Shweta Chopra, Jacek A. Koziel

TSM 416 Technology Capstone Projects

In order to run Sandvik Coromant Capto C8 tooling, the operator must remove the existing stick tool holder from the vertical lathes ram. This process takes multiple hours and has the potential to damage the ram. Our sponsor would like to avoid removing the stick tool holder when running C8 and cam lock style tooling.


Pella Lean Utilization Cell Improvement, Kritika Chopra, Layne Mcmahon, Trevor Sorensen, Payton Stadtlander, Shweta Chopra, Jacek A. Koziel Apr 2019

Pella Lean Utilization Cell Improvement, Kritika Chopra, Layne Mcmahon, Trevor Sorensen, Payton Stadtlander, Shweta Chopra, Jacek A. Koziel

TSM 416 Technology Capstone Projects

Observe a wood utilization that is not meeting the efficiency and output goals they are looking for and give feedback on different ways to improve uptime and efficiency. The cell is comprised of a cell that includes two moulders, an electronic press, a gluer, and a robot. This cell is used to combine boards that are made of scrap material from another line with full-length edge boards to create an array of larger boards that are used on various products that Pella.

The utilization cell in question is the newest Utilization Cell (U-Cell) at the Pella, Iowa facility and has ...


Economic Model For Investing Small Versus Large Ag Equipment, Jonathan Alas, Chris Davis, Grant Pieper, Shweta Chopra, Jacek A. Koziel Apr 2019

Economic Model For Investing Small Versus Large Ag Equipment, Jonathan Alas, Chris Davis, Grant Pieper, Shweta Chopra, Jacek A. Koziel

TSM 416 Technology Capstone Projects

  • This project will allow the client to give economic advice to its customers while making equipment purchase decisions.
  • The client has customers who invest in equipment who want to maximize their efficiency and return on investment.
  • This problem is not one that many operators consider, but it is something that could benefit many producers if they consider our deliverable. Solving this problem could save producers money and increase equipment field capacity allowing operators to get more done in less time. This solution can create a business opportunity for dealerships to work with their customers to find the right size equipment ...


Hagie Ideal Welding Cell, Paul Appleget, Katie Larson, Jon Thomas, Matt Rowan, Shweta Chopra, Jacek A. Koziel Apr 2019

Hagie Ideal Welding Cell, Paul Appleget, Katie Larson, Jon Thomas, Matt Rowan, Shweta Chopra, Jacek A. Koziel

TSM 416 Technology Capstone Projects

Hagie Manufacturing is a company based in Clarion, Iowa, where they build sprayers for agricultural applications. There are around 140 employees currently working at Hagie, and they are ranked in 2nd among their other top 10 competitors. Hagie has an impact in Iowa by being known as a locally established company, created by a friendly farmer that wanted to have personal and family-oriented business to support his neighboring farmers. Welding production requires an increase to 2 machines per day in order to stay up with demand. Hagie has full capability to keep up with John Deere’s standards, which have ...


Design By Taking Perspectives: How Engineers Explore Problems, Jaclyn K. Murray, Jaryn A. Studer, Shanna R. Daly, Seda Mckilligan, Colleen M. Seifert Apr 2019

Design By Taking Perspectives: How Engineers Explore Problems, Jaclyn K. Murray, Jaryn A. Studer, Shanna R. Daly, Seda Mckilligan, Colleen M. Seifert

Industrial Design Publications

Background: Problem exploration includes identifying, framing, and defining design problems and bounding problem spaces. Intentional and unintentional changes in problem understanding naturally occur as designers explore design problems to create solutions. Through problem exploration, new perspectives on the problem can emerge along with new and diverse ideas for solutions. By considering multiple problem perspectives varying in scope and focus, designers position themselves to increase their understandings of the “real” problem and engage in more diverse idea generation processes leading to an increasing variety of potential solutions.

Purpose/Hypothesis: The purpose of this study was to investigate systematic patterns in problem ...


Evaluation Of An Intelligent Team Tutoring System For A Collaborative Two-Person Problem: Surveillance, Alec Ostrander, Desmond Bonner, Jamiahus Walton, Anna Slavina, Kaitlyn M. Ouverson, Adam Kohl, Stephen Gilbert, Michael Dorneich, Anne Sinatra, Eliot H. Winer Jan 2019

Evaluation Of An Intelligent Team Tutoring System For A Collaborative Two-Person Problem: Surveillance, Alec Ostrander, Desmond Bonner, Jamiahus Walton, Anna Slavina, Kaitlyn M. Ouverson, Adam Kohl, Stephen Gilbert, Michael Dorneich, Anne Sinatra, Eliot H. Winer

Industrial and Manufacturing Systems Engineering Publications

This paper describes the development and evaluation of an Intelligent Team Tutoring System (ITTS) for pairs of learners working collaboratively to monitor an area. In the Surveillance Team Tutor (STT), learners performed a surveillance task in a virtual environment, communicating to track hostile moving soldiers. This collaborative problem solving task required significant communication to achieve the common goal of perfect surveillance. In a pilot evaluation, 16 two-person teams performed the task within one of three feedback conditions (Individual, Team, or None) across four trials each. The STT used a unique approach to filtering feedback so that teams in both individual ...


Simulating Severe Supply Chain Disruptions With Multiple Suppliers And Firms, Kevin Korniejczuk Jan 2019

Simulating Severe Supply Chain Disruptions With Multiple Suppliers And Firms, Kevin Korniejczuk

Creative Components

Global supply chains are susceptible to disruptions. Disruptions in one part of the world can lead to supply chain problems for companies around the world. This creative component analyzes a model of severe supply chain disruptions where several suppliers encounter inoperable facilities, resulting in potential shortages for firms which purchase from those suppliers. All entities within the model are able to choose strategic initiatives to maintain operations. If an entity’s facility is closed because of a disruptive event, the entity can choose to move production to an alternate facility. If an entity’s facility is undamaged, the entity can ...


Principal Global Investor Dynamic Risk Premia Performance Tracking Project -Binary Classification Validation And Visualization, Yurui Li Jan 2019

Principal Global Investor Dynamic Risk Premia Performance Tracking Project -Binary Classification Validation And Visualization, Yurui Li

Creative Components

No abstract provided.


A Top-Down Human-Centered Approach To Exoskeleton Design, Thomas Michael Schnieders Jan 2019

A Top-Down Human-Centered Approach To Exoskeleton Design, Thomas Michael Schnieders

Graduate Theses and Dissertations

This dissertation begins, as all good research does, with a thorough review of the literature. The literature is broken into three primary sections covering the early 1960’s when information on exoskeletons was first published up to 1970, then the formative years of 1970 to 2000 where much of the primary technology was developed, and finally 2000 to present where new advancements in battery density, computer processing, and materials leads to more robust and advanced exoskeleton designs. The literature review determines the areas where there is a dearth of research or places needing further examination and lays the groundwork for ...


Performance Archery Shooting, Hunter Sabers Jan 2019

Performance Archery Shooting, Hunter Sabers

Graduate Theses and Dissertations

Bows and arrows can be traced all the way back to 65,000 BC and have evolved from a tool used for hunting, to a tool for war, and today used by hobbyists in competition. The evolution of this technology has progressed for the most part without an understanding of the effect it has on humans. The present study aims to connect how technology effects humans specifically looking at archery. The study measured the muscle activity in the bow arm of the archer and the vibration experienced on the bow arm of the archer during the shooting process. From those ...


Optimizing Ensemble Weights For Machine Learning Models: A Case Study For Housing Price Prediction, Mohsen Shahhosseini, Guiping Hu, Hieu Pham Jan 2019

Optimizing Ensemble Weights For Machine Learning Models: A Case Study For Housing Price Prediction, Mohsen Shahhosseini, Guiping Hu, Hieu Pham

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

Designing ensemble learners has been recognized as one of the significant trends in the field of data knowledge especially in data science competitions. Building models that are able to outperform all individual models in terms of bias, which is the error due to the difference in the average model predictions and actual values, and variance, which is the variability of model predictions, has been the main goal of the studies in this area. An optimization model has been proposed in this paper to design ensembles that try to minimize bias and variance of predictions. Focusing on service sciences, two well-known ...


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 ...


Facility Location Selection For The Humanitarian Needs Of Refugees, Elif Elçin Günay, Kijung Park, Srujana Kandukuri, Gül E. Okudan Kremer Jan 2019

Facility Location Selection For The Humanitarian Needs Of Refugees, Elif Elçin Günay, Kijung Park, Srujana Kandukuri, Gül E. Okudan Kremer

Industrial and Manufacturing Systems Engineering Conference Proceedings and Posters

As a result of civil war in Syria and Turkey’s open-door policy, almost 3 million refugees moved to Turkey since March 2011. The unexpected arrival of a large number of refugees within a relatively short period of time caused inadequate planning of the government-operated camps to fulfill the humanitarian needs of those affected individuals. The purpose of this study is to develop an optimization model that helps in the distribution of humanitarian aid to the refugees. The multi-objective optimization model decides on the facility locations by integrating total transportation distance minimization and covered demand maximization. Uncertainties in the supply ...


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 ...