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Operations Research, Systems Engineering and Industrial Engineering Commons

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2018

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Articles 1 - 30 of 640

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

Teen Driver System Modeling: A Tool For Policy Analysis, Celestin Missikpode, Corrine Peek-Asa, Daniel V. Mcgehee, James Torner, Wayne Wakeland, Robert Wallace Dec 2018

Teen Driver System Modeling: A Tool For Policy Analysis, Celestin Missikpode, Corrine Peek-Asa, Daniel V. Mcgehee, James Torner, Wayne Wakeland, Robert Wallace

Systems Science Faculty Publications and Presentations

Background: Motor vehicle crashes remain the leading cause of teen deaths in spite of preventive efforts. Prevention strategies could be advanced through new analytic approaches that allow us to better conceptualize the complex processes underlying teen crash risk. This may help policymakers design appropriate interventions and evaluate their impacts.

Methods: System Dynamics methodology was used as a new way of representing factors involved in the underlying process of teen crash risk. Systems dynamics modeling is relatively new to public health analytics and is a promising tool to examine relative influence of multiple interacting factors in predicting a health outcome. Dynamics ...


A Biofuel Supply Chain Equilibrium Analysis With Subsidy Consideration, Amirsaman Hamzeh Bajgiran Dec 2018

A Biofuel Supply Chain Equilibrium Analysis With Subsidy Consideration, Amirsaman Hamzeh Bajgiran

Theses and Dissertations

Growing environmental concerns in the last few decades along with the energy security issues have led governments to take actions to reduce their dependence on fossil fuels and enhance renewable energy usage, including biofuels. Enforcement of federal or state mandates and regulations that obligate a certain amount of biofuel production are one of the main levers that governments use to achieve their goals. In the U.S. as an example, Renewable Fuel Standard (RFS) requires the production of 36 billion gallons of ethanol by 2022, 21 billion gallons of which should be advanced biofuels derived from biostocks other than corn ...


Heuristic Algorithm To Minimize Total Weighted Tardiness On The Unrelated Parallel Machine With Sequence Dependent Setup And Future Ready Time, Tzu Yi Li Dec 2018

Heuristic Algorithm To Minimize Total Weighted Tardiness On The Unrelated Parallel Machine With Sequence Dependent Setup And Future Ready Time, Tzu Yi Li

Theses and Dissertations

This study presents a heuristic algorithm to minimize total weighted tardiness on unrelated parallel machines with sequence-dependent setup time and future ready time. We propose a new rule based on Apparent Tardiness Cost (ATC). The performance of the rule is evaluated on unrelated parallel machines. In order to solve a problem, we use a look-ahead method and a job-swap method. When a machine becomes idle, the heuristic compares the jobs on the machine and selects the one with the smallest total tardiness value to carry out a process.

The propose heuristic is divided into three stages: The first stage employs ...


In Silico Analysis Of Advanced Processing Methods For Light-Weight Alloys Powders, Marjan Nezafati Dec 2018

In Silico Analysis Of Advanced Processing Methods For Light-Weight Alloys Powders, Marjan Nezafati

Theses and Dissertations

Light-weight Al and Mg-based metal-matrix nanocomposites (MMNCs) are lauded as one of the most promising structural materials for vehicle, military, and construction applications. These MMNCs are often synthesized using the powder metallurgy (PM) process under liquid nitrogen cryogenic environments to control the grain sizes. It is believed that proper incorporation of the nitrogen species into the bulk lattice during processing could strongly enhance the mechanical properties of MMNCs by forming N-rich dispersoids. In this work, using the density-functional theory (DFT), the adsorption, absorption and diffusion behavior of nitrogen molecule/atoms have been studied and related to t Al and Mg ...


Thermal Comfort In Heated-And-Ventilated-Only Warehouses, Christian Taber, Donald G. Colliver Dec 2018

Thermal Comfort In Heated-And-Ventilated-Only Warehouses, Christian Taber, Donald G. Colliver

Biosystems and Agricultural Engineering Faculty Publications

Building energy codes and standards contain minimum requirements that provide a path to energy efficient buildings and building systems. ASHRAE/IES Standard 90.1 and the International Energy Conservation Code (IECC) are the main national building code models in the United States. Both Standard 90.1 and the IECC are updated on three-year cycles with the goal of reducing building energy consumption.


Global Renewable And Nonrenewable Energy Use Impact Assessment Of U.S. Manufacturing: An Integrated Cradle-To-Gate Lca And Dea Approach, Bahadir Ezici Dec 2018

Global Renewable And Nonrenewable Energy Use Impact Assessment Of U.S. Manufacturing: An Integrated Cradle-To-Gate Lca And Dea Approach, Bahadir Ezici

Master's Theses

In this thesis, U.S. manufacturing industries` global supply chain-linked energy use and economic output are investigated considering a total of 16 renewable and nonrenewable energy carriers. A multiregion input output (MRIO) framework is employed to conduct the global supply chain-linked energy use impact assessment. The study period was between 1995 and 2014 based on data availability. Thus, 20 MRIO models were developed. Each MRIO model consists of the 40 largest economies of the world and the rest of the world (ROW) as the 41st country. Each country’s economy was structured into 35 manufacturing and service industries based on ...


Midpoint And Endpoint Sustainability Assessment Of U.S. And China Manufacturing: A Comparative Mrio+Recipe Analysis, Mustafa Saber Dec 2018

Midpoint And Endpoint Sustainability Assessment Of U.S. And China Manufacturing: A Comparative Mrio+Recipe Analysis, Mustafa Saber

Master's Theses

Manufacturing is among the most important industries for an economy, which creates value-added, fosters innovation, stimulates employment and economic growth. Therefore, manufacturing industries are crucial for a country’s sustainable development not only for economic reasons but also for social (.e.g. employment, tax, etc.) and environmental ones. Thus, manufacturing activities’ contribution to the economy is critically related with environmental and social impacts. Sustainable economic growth is essential and necessary for a country to provide all necessary goods and services to its growing population.

And, this is highly linke with the creation of new jobs and in this context, manufacturing ...


Real-Time Heuristics And Metaheuristics For Static And Dynammic Weapon Target Assignments, Alexander G. Kline Dec 2018

Real-Time Heuristics And Metaheuristics For Static And Dynammic Weapon Target Assignments, Alexander G. Kline

Theses and Dissertations

The problem of targeting and engaging individual missiles (targets) with an arsenal of interceptors (weapons) is known as the weapon target assignment problem. This problem has been well-researched since the seminal work in 1958. There are two distinct categories of the weapon target assignment problem: static and dynamic. The static weapon target assignment problem considers a single instance in which a known number of incoming missiles is to be engaged with a finite number of interceptors. By contrast, the dynamic weapon target assignment problem considers either follow on engagement(s) should the first engagement(s) fail, a subsequent salvo of ...


Reactive Navigation In Partially Known Non-Convex Environments, Vasileios Vasilopoulos, Daniel E. Koditschek Dec 2018

Reactive Navigation In Partially Known Non-Convex Environments, Vasileios Vasilopoulos, Daniel E. Koditschek

Departmental Papers (ESE)

This paper presents a provably correct method for robot navigation in 2D environments cluttered with familiar but unexpected non-convex, star-shaped obstacles as well as completely unknown, convex obstacles. We presuppose a limited range onboard sensor, capable of recognizing, localizing and (leveraging ideas from constructive solid geometry) generating online from its catalogue of the familiar, non-convex shapes an implicit representation of each one. These representations underlie an online change of coordinates to a completely convex model planning space wherein a previously developed online construction yields a provably correct reactive controller that is pulled back to the physically sensed representation to generate ...


Credit Assignment For Collective Multiagent Rl With Global Rewards, Duc Thien Nguyen, Akshat Kumar, Hoong Chuin Lau Dec 2018

Credit Assignment For Collective Multiagent Rl With Global Rewards, Duc Thien Nguyen, Akshat Kumar, Hoong Chuin Lau

Research Collection School Of Information Systems

Scaling decision theoretic planning to large multiagent systems is challenging due to uncertainty and partial observability in the environment. We focus on a multiagent planning model subclass, relevant to urban settings, where agent interactions are dependent on their collective influence'' on each other, rather than their identities. Unlike previous work, we address a general setting where system reward is not decomposable among agents. We develop collective actor-critic RL approaches for this setting, and address the problem of multiagent credit assignment, and computing low variance policy gradient estimates that result in faster convergence to high quality solutions. We also develop difference ...


Integrated Reward Scheme And Surge Pricing In A Ride-Sourcing Market, Hai Yang, Chaoyi Shao, Hai Wang, Jieping Ye Dec 2018

Integrated Reward Scheme And Surge Pricing In A Ride-Sourcing Market, Hai Yang, Chaoyi Shao, Hai Wang, Jieping Ye

Research Collection School Of Information Systems

Surge pricing is commonly used in on-demand ride-sourcing platforms (e.g., Uber, Lyft and Didi) to dynamically balance demand and supply. However, since the price for ride service cannot be unlimited, there is usually a reasonable or legitimate range of prices in practice. Such a constrained surge pricing strategy fails to balance demand and supply in certain cases, e.g., even adopting the maximum allowed price cannot reduce the demand to an affordable level during peak hours. In addition, the practice of surge pricing is controversial and has stimulated long debate regarding its pros and cons. To address the limitation ...


Design And Implementation Of Decision Support For Traffic Management At Multipurpose Port Gates, Ketki Kulkarni, Hoong Chuin Lau, Hai Wang, Sathyavarathan Sivabalasingam, Trong Khiem Tran Dec 2018

Design And Implementation Of Decision Support For Traffic Management At Multipurpose Port Gates, Ketki Kulkarni, Hoong Chuin Lau, Hai Wang, Sathyavarathan Sivabalasingam, Trong Khiem Tran

Research Collection School Of Information Systems

Effective traffic management can help port operators gain a competitive edge in service level and efficient use of limited resources. One critical aspect of traffic management is gate operations management, ensuring a good customer experience to logistic carriers and considering the impact of congestion in and around the port. In this paper, we describe the design and implementation of a decision support tool to help gate operators plan for future scenarios with fluctuating demand and limited resources. We propose a simulation optimization framework which incorporates theoretical results from queuing theory to approximate complex multi-lane multi-server systems. Our major contribution in ...


Budget-Constrained Regression Model Selection Using Mixed Integer Nonlinear Programming, Jingying Zhang Dec 2018

Budget-Constrained Regression Model Selection Using Mixed Integer Nonlinear Programming, Jingying Zhang

Theses and Dissertations

Regression analysis fits predictive models to data on a response variable and corresponding values for a set of explanatory variables. Often data on the explanatory variables come at a cost from commercial databases, so the available budget may limit which ones are used in the final model.

In this dissertation, two budget-constrained regression models are proposed for continuous and categorical variables respectively using Mixed Integer Nonlinear Programming (MINLP) to choose the explanatory variables to be included in solutions. First, we propose a budget-constrained linear regression model for continuous response variables. Properties such as solvability and global optimality of the proposed ...


System Engineering Analysis Of Terraforming Mars With An Emphasis On Resource Importation Technology, Brandon Wong Dec 2018

System Engineering Analysis Of Terraforming Mars With An Emphasis On Resource Importation Technology, Brandon Wong

LMU/LLS Theses and Dissertations

This project uses System Engineering principles to delve into the viability of different methods for Terraforming Mars, with a comparison between Paraterraforming, Terraforming and Bioforming. It will then examine one subsystem that will be integral to the terraforming process, which is the space infrastructure necessary to import enough gases to recreate Earth’s atmosphere on Mars. It will analyze the viability of Chemical Rockets, Nuclear Rockets, Space Elevators, Skyhooks, Rotovators, Mass Drivers, Launch Loops and Orbital Rings for this subsystem and provide recommendations for an implementation plan.


Crude Oil Prices Forecasting: Time Series Vs. Svr Models, Xin James He Dec 2018

Crude Oil Prices Forecasting: Time Series Vs. Svr Models, Xin James He

Journal of International Technology and Information Management

This research explores the weekly crude oil price data from U.S. Energy Information Administration over the time period 2009 - 2017 to test the forecasting accuracy by comparing time series models such as simple exponential smoothing (SES), moving average (MA), and autoregressive integrated moving average (ARIMA) against machine learning support vector regression (SVR) models. The main purpose of this research is to determine which model provides the best forecasting results for crude oil prices in light of the importance of crude oil price forecasting and its implications to the economy. While SVR is often considered the best forecasting model in ...


Table Of Contents Jitim Vol 27 Issue 3, 2018 Dec 2018

Table Of Contents Jitim Vol 27 Issue 3, 2018

Journal of International Technology and Information Management

Table of Contents


Process Improvement For Material Breakdown, Steven Brousseau, Matthew Klug, Kirshanthi Ganesa Moorthy, Michael Patten Nov 2018

Process Improvement For Material Breakdown, Steven Brousseau, Matthew Klug, Kirshanthi Ganesa Moorthy, Michael Patten

TSM 415 Technology Capstone Posters

Cell workers at Cardinal Glass are spending too much time and labor manually breaking down larger materials into smaller and more usable parts.


Batch To Single Piece Flow, Ryan Hood, Miles Martin, Michael Shultz Nov 2018

Batch To Single Piece Flow, Ryan Hood, Miles Martin, Michael Shultz

TSM 415 Technology Capstone Posters

Assess the current T1 Snap product line and propose a move from batch production to single piece flow.


Integrating Tool Holders For Vertical Lathe, Garrett Deschaine, Graham Fiebiger, Nicholas Gambs, Brendan Maye, Theodore Payne Nov 2018

Integrating Tool Holders For Vertical Lathe, Garrett Deschaine, Graham Fiebiger, Nicholas Gambs, Brendan Maye, Theodore Payne

TSM 415 Technology Capstone Posters

• In order to run Sandvik Coromant Capto C8 tooling the operator must remove the existing stick tool holder from the vertical lathe’s ram. This process takes several hours and has the potential to damage the ram.

• Avoid removing the stick tool holder when running C8 and cam lock style tooling.


Grain Cart Compaction Impact, Tyler Ehlers, Kyle Lafrenz Nov 2018

Grain Cart Compaction Impact, Tyler Ehlers, Kyle Lafrenz

TSM 415 Technology Capstone Posters

• Soil compaction poses a large threat in potential yield reduction in row crop operations across the globe.

• The tractor and grain cart is the heaviest piece of machinery pulled through a field, making it the most likely to leave highest level of compaction.


Keying Process, Benjamin Shaver, Jacob Raveling, Mary Gail Knutson Nov 2018

Keying Process, Benjamin Shaver, Jacob Raveling, Mary Gail Knutson

TSM 415 Technology Capstone Posters

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.


Designing And Building A Grain Dryer Test Stand, Luke Fischer, Travis Hursh, Riley Schnell, Jet Wayne Nov 2018

Designing And Building A Grain Dryer Test Stand, Luke Fischer, Travis Hursh, Riley Schnell, Jet Wayne

TSM 415 Technology Capstone Posters

The ISU Feed Mill is in need of an operating grain dryer test stand that can accurately represent four different grain mixing styles used in the market today.


Creation Of The Ideal Welding Cell For Sprayer Booms, Paul Appleget, Katie Larson, Matthew Rowan, Jon Thomas Nov 2018

Creation Of The Ideal Welding Cell For Sprayer Booms, Paul Appleget, Katie Larson, Matthew Rowan, Jon Thomas

TSM 415 Technology Capstone Posters

Welding production requires an increase to 2 machines per day. Hagie has full capability to keep up with John Deere’s standards set by a newer business deal between the companies.


Separation Of Nutrient Solids And Liquids In Swine Manure, Lucas Meyer, Mason Moeller, Todd Muell Nov 2018

Separation Of Nutrient Solids And Liquids In Swine Manure, Lucas Meyer, Mason Moeller, Todd Muell

TSM 415 Technology Capstone Posters

• Producers want to provide transportation of solids and increase the available storage capacity of a storage system by separating nutrients produced in a shallow pit, external storage swine facility.

• Producers transporting manure to fields don’t want to pay to transport slurry that is 95% water.


Journal Bearing Removal Improvement, Ben Gibson, Matt Johnson, Lucas Kramer, Chad Martin Nov 2018

Journal Bearing Removal Improvement, Ben Gibson, Matt Johnson, Lucas Kramer, Chad Martin

TSM 415 Technology Capstone Posters

• Current method of removing journal bearings from castings is labor intensive, poses safety risks, and creates contamination.

• Develop a new method and, if necessary, tooling, to improve the bearing removal process.


Makusafe Wearable Device Testing, Nicholas Campbell, Alexander Foust, Dawson Knapp, Andrew Yi Nov 2018

Makusafe Wearable Device Testing, Nicholas Campbell, Alexander Foust, Dawson Knapp, Andrew Yi

TSM 415 Technology Capstone Posters

MakuSafe Corporation needs data collected on the strength and comfortability of the holster for their wearable safety device.


Improvement Of Moulder Uptime, Kritika Chopra, Layne Mcmahon, Payton Stadtlander, Trevor Sorensen Nov 2018

Improvement Of Moulder Uptime, Kritika Chopra, Layne Mcmahon, Payton Stadtlander, Trevor Sorensen

TSM 415 Technology Capstone Posters

A cell that consists of 2 moulders, an electronic press, and a robot is not meeting the efficiency and uptime goals that Pella would desire.


Improve Agricultural Practices Through Waterflow Modeling & Visualization, Warren Jennings, Riley Nylin, Josh Pederson, James Pollock Nov 2018

Improve Agricultural Practices Through Waterflow Modeling & Visualization, Warren Jennings, Riley Nylin, Josh Pederson, James Pollock

TSM 415 Technology Capstone Posters

Current farming tools do not provide an easy solution for waterflow modeling; therefore, farmers are not aware of what happens in their fields after rainfall events.


Grain Drying, Brett Olson, Michael Shippy, Jacob Titmus, Todd Van Dyke Nov 2018

Grain Drying, Brett Olson, Michael Shippy, Jacob Titmus, Todd Van Dyke

TSM 415 Technology Capstone Posters

• Mold toxins (Aflatoxin) consumed by children can stunt growth, cause mental impairment and acute poisoning

• Corn left in field is susceptible to loss from insects, rats, birds, and theft


Economic Model For Investing Small Vs. Large Ag Equipment, Jonathan Alas, Chris Davis, Grant Pieper Nov 2018

Economic Model For Investing Small Vs. Large Ag Equipment, Jonathan Alas, Chris Davis, Grant Pieper

TSM 415 Technology Capstone Posters

• Producers can have a difficult decision when it comes to purchasing equipment.

• Producers are always looking to minimize costs and maximize efficiency when it comes to their equipment.

• In a state that is a big player in the agriculture industry it is important for our producers to produce at the highest efficiency possible.