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

A Machine Learning Approach For Predicting Clinical Trial Patient Enrollment In Drug Development Portfolio Demand Planning, Ahmed Shoieb May 2023

A Machine Learning Approach For Predicting Clinical Trial Patient Enrollment In Drug Development Portfolio Demand Planning, Ahmed Shoieb

Masters Theses

One of the biggest challenges the clinical research industry currently faces is the accurate forecasting of patient enrollment (namely if and when a clinical trial will achieve full enrollment), as the stochastic behavior of enrollment can significantly contribute to delays in the development of new drugs, increases in duration and costs of clinical trials, and the over- or under- estimation of clinical supply. This study proposes a Machine Learning model using a Fully Convolutional Network (FCN) that is trained on a dataset of 100,000 patient enrollment data points including patient age, patient gender, patient disease, investigational product, study phase, blinded …


Towards Structured Planning And Learning At The State Fisheries Agency Scale, Caleb A. Aldridge Dec 2022

Towards Structured Planning And Learning At The State Fisheries Agency Scale, Caleb A. Aldridge

Theses and Dissertations

Inland recreational fisheries has grown philosophically and scientifically to consider economic and sociopolitical aspects (non-biological) in addition to the biological. However, integrating biological and non-biological aspects of inland fisheries has been challenging. Thus, an opportunity exists to develop approaches and tools which operationalize planning and decision-making processes which include biological and non-biological aspects of a fishery. This dissertation expands the idea that a core set of goals and objectives is shared among and within inland fisheries agencies; that many routine operations of inland fisheries managers can be regimented or standardized; and the novel concept that current information and operations can …


Simulating Autonomous Cruise Missile Swarm Behaviors In An Anti-Access Area Denial (A2ad) Environment, Kyle W. Goggins Mar 2022

Simulating Autonomous Cruise Missile Swarm Behaviors In An Anti-Access Area Denial (A2ad) Environment, Kyle W. Goggins

Theses and Dissertations

The increasingly sophisticated anti-access area denial (A2AD) threat imposed by the modern integrated air defense system (IADS), coupled with the decreasingly potent advantage provided by high-end stealth platforms, has prompted Air Force senior leaders to invest in radically changing the nature of air power for the year 2030 and beyond. A prominent element of this new vision is weapon swarming, which aims to address this challenge by overwhelming the IADS with huge numbers of low-cost, attritable aerial assets emboldened by autonomous capabilities. This research proposes a framework for classifying the different levels of autonomous capability along three independent dimensions—namely ability …


Integration Of Blockchain Technology Into Automobiles To Prevent And Study The Causes Of Accidents, John Kim Dec 2021

Integration Of Blockchain Technology Into Automobiles To Prevent And Study The Causes Of Accidents, John Kim

Electronic Theses, Projects, and Dissertations

Automobile collisions occur daily. We now live in an information-driven world, one where technology is quickly evolving. Blockchain technology can change the automotive industry, the safety of the motoring public and its surrounding environment by incorporating this vast array of information. It can place safety and efficiency at the forefront to pedestrians, public establishments, and provide public agencies with pertinent information securely and efficiently. Other industries where Blockchain technology has been effective in are as follows: supply chain management, logistics, and banking. This paper reviews some statistical information regarding automobile collisions, Blockchain technology, Smart Contracts, Smart Cities; assesses the feasibility …


Statistically Defensible Wind Tunnel Models, Timothy A. Roche Jun 2021

Statistically Defensible Wind Tunnel Models, Timothy A. Roche

Theses and Dissertations

Wind tunnels are used to test scale-model air frames in order to collect aerodynamic data. The Subsonic Aerodynamic Research Laboratory (SARL) Wind Tunnel is a low speed wind tunnel located at Wright-Patterson Air Force Base. The SARL Wind Tunnel team approached AFIT for assistance in creating statistically defensible models for the conditions inside the wind tunnel. During a wind tunnel test, pressure sensors cannot be placed at the test model. Instead, pressure is measured by a pitot probe permanently mounted in the corner of the test chamber. The pressure at the model location is predicted from the measurements taken by …


A Transdisciplinary Analysis Of Just Transition Pathways To 100% Renewable Electricity, Adewale Aremu Adesanya Jan 2021

A Transdisciplinary Analysis Of Just Transition Pathways To 100% Renewable Electricity, Adewale Aremu Adesanya

Dissertations, Master's Theses and Master's Reports

The transition to using clean, affordable, and reliable electrical energy is critical for enhancing human opportunities and capabilities. In the United States, many states and localities are engaging in this transition despite the lack of ambitious federal policy support. This research builds on the theoretical framework of the multilevel perspective (MLP) of sociotechnical transitions as well as the concept of energy justice to investigate potential pathways to 100 percent renewable energy (RE) for electricity provision in the U.S. This research seeks to answer the question: what are the technical, policy, and perceptual pathways, barriers, and opportunities for just transition to …


Cost Estimating Using A New Learning Curve Theory For Non-Constant Production Rates, Dakotah Hogan, John J. Elshaw, Clay M. Koschnick, Jonathan D. Ritschel, Adedeji B. Badiru, Shawn M. Valentine Oct 2020

Cost Estimating Using A New Learning Curve Theory For Non-Constant Production Rates, Dakotah Hogan, John J. Elshaw, Clay M. Koschnick, Jonathan D. Ritschel, Adedeji B. Badiru, Shawn M. Valentine

Faculty Publications

Traditional learning curve theory assumes a constant learning rate regardless of the number of units produced. However, a collection of theoretical and empirical evidence indicates that learning rates decrease as more units are produced in some cases. These diminishing learning rates cause traditional learning curves to underestimate required resources, potentially resulting in cost overruns. A diminishing learning rate model, namely Boone’s learning curve, was recently developed to model this phenomenon. This research confirms that Boone’s learning curve systematically reduced error in modeling observed learning curves using production data from 169 Department of Defense end-items. However, high amounts of variability in …


Ground Weather Radar Signal Characterization Through Application Of Convolutional Neural Networks, Stephen M. Lee Mar 2020

Ground Weather Radar Signal Characterization Through Application Of Convolutional Neural Networks, Stephen M. Lee

Theses and Dissertations

The 45th Weather Squadron supports the space launch efforts out of the Kennedy Space Center and Cape Canaveral Air Force Station for the Department of Defense, NASA, and commercial customers through weather assessments. Their assessment of the Lightning Launch Commit Criteria (LLCC) for avoidance of natural and rocket triggered lightning to launch vehicles is critical in approving space shuttle and rocket launches. The LLCC includes standards for cloud formations, which requires proper cloud identification and characterization methods. Accurate reflectivity measurements for ground weather radar are important to meet the LLCC for rocket triggered lightning. Current linear interpolation methods for ground …


Conditional Survival Analysis For Concrete Bridge Decks, Azam Nabizadeh, Habib Tabatabai, Mohammad A. Tabatabai Nov 2019

Conditional Survival Analysis For Concrete Bridge Decks, Azam Nabizadeh, Habib Tabatabai, Mohammad A. Tabatabai

Civil and Environmental Engineering Faculty Articles

Bridge decks are a significant factor in the deterioration of bridges, and substantially affect long-term bridge maintenance decisions. In this study, conditional survival (reliability) analysis techniques are applied to bridge decks to evaluate the age at the end of service life using the National Bridge Inventory records. As bridge decks age, the probability of survival and the expected service life would change. The additional knowledge gained from the fact that a bridge deck has already survived a specific number of years alters (increases) the original probability of survival at subsequent years based on the conditional probability theory. The conditional expected …


Spatial And Temporal Correlations Of Freeway Link Speeds: An Empirical Study, Piotr J. Rachtan Jan 2012

Spatial And Temporal Correlations Of Freeway Link Speeds: An Empirical Study, Piotr J. Rachtan

Masters Theses 1911 - February 2014

Congestion on roadways and high level of uncertainty of traffic conditions are major considerations for trip planning. The purpose of this research is to investigate the characteristics and patterns of spatial and temporal correlations and also to detect other variables that affect correlation in a freeway setting. 5-minute speed aggregates from the Performance Measurement System (PeMS) database are obtained for two directions of an urban freeway – I-10 between Santa Monica and Los Angeles, California. Observations are for all non-holiday weekdays between January 1st and June 30th, 2010. Other variables include traffic flow, ramp locations, number of lanes and the …


Response Surface Methodology As A Sensitivity Tool In Decision Analysis, David A. Meyers Mar 1995

Response Surface Methodology As A Sensitivity Tool In Decision Analysis, David A. Meyers

Theses and Dissertations

The purpose of this study is to evaluate response surface methodology as a sensitivity analysis tool in the area of decision analysis. The advent of low-cost personal computer software, such as DPLTM, has created an accessible tool with the ability to frame and solve influence diagrams for decision problems. This study provides a comparison of current sensitivity analysis techniques vs those made possible through response surface methodology (RSM). Sensitivity analysis alternatives are demonstrated on a decision problem concerning the evaluation of force structure options for the Department of Defense. Sensitivity analysis is performed on both one-way and two-way perturbations of …


Dickey-Lincoln School Lakes Transmission Project: Final Environmental Impact Statement: Appendix L, New England Division, United States Army Corps Of Engineers, United States Department Of Energy Jan 1981

Dickey-Lincoln School Lakes Transmission Project: Final Environmental Impact Statement: Appendix L, New England Division, United States Army Corps Of Engineers, United States Department Of Energy

Dickey-Lincoln School Lakes Project

This draft EIS Supplement describes the environmental impacts of updated transmission plans of the Department of Energy (DOE) for the proposed Dickey-Lincoln School Lakes Project. Energy produced by the project is to be integrated into the New England electric system if the project is constructed.


Dickey-Lincoln School Lakes Project Transmission Studies Environmental Impact Statement: Appendix H: Socio-Economic Impact Study, Edward C. Jordan Co., Inc., United States Department Of Energy Jan 1978

Dickey-Lincoln School Lakes Project Transmission Studies Environmental Impact Statement: Appendix H: Socio-Economic Impact Study, Edward C. Jordan Co., Inc., United States Department Of Energy

Dickey-Lincoln School Lakes Project

The principal objective of this study is to identify the major types and intensity of social and economic impacts anticipated with the proposed pre-construction, construction, operation and maintenance of the Dickey-Lincoln transmission line. In order to address the types of anticipated impacts it was necessary to first develop a socio-economic profile of the affected area.


Ecological Resources Impact Study. Map Volume, United States. Department Of Energy Jan 1978

Ecological Resources Impact Study. Map Volume, United States. Department Of Energy

Dickey-Lincoln School Lakes Project

Environmental Assessment of Alternative Routes, Ecological Resources Impact Study, Maps and Legend land cover types


Visual-Recreation Resources Impact Study. Map Volume, United States. Department Of Energy Jan 1978

Visual-Recreation Resources Impact Study. Map Volume, United States. Department Of Energy

Dickey-Lincoln School Lakes Project

Environmental Assessment of Alternative Routes, Visual/Recreational Resources Impact Studies, Maps of Recreational Resources


Dickey-Lincoln School Lakes Project: Transmission System Planning Study, United States Department Of The Interior Jan 1977

Dickey-Lincoln School Lakes Project: Transmission System Planning Study, United States Department Of The Interior

Dickey-Lincoln School Lakes Project

The purpose of this report is to investigate various transmission system alternatives and recommend a plan of service to integrate power from the Dickey-Lincoln School Lakes (D-L) Project into the New England electric power transmission system.


Economic Impacts Summary : Dickey-Lincoln School Lakes Project, Edward C. Jordan Co. Inc, United States Army Corps Of Engineers, New England Division Jan 1977

Economic Impacts Summary : Dickey-Lincoln School Lakes Project, Edward C. Jordan Co. Inc, United States Army Corps Of Engineers, New England Division

Dickey-Lincoln School Lakes Project

Objective of this study will be to assess Dickey-Lincoln in terms of its attainment of project objectives. How will this be done? The Water Resources Council in "Water and Related Land Resources -Establishment of Principles and Standards for Planning"' states that: The overall purpose of water and land resource planning is to promote the quality of life, by reflecting society's preferences for attainment of the objectives...


Recommendations Of Alternative System Plans And Transmission Corridors For The Dickey/Lincoln School Hydroelectric Project, Vtn Environmental Sciences (Firm), Interior Jan 1976

Recommendations Of Alternative System Plans And Transmission Corridors For The Dickey/Lincoln School Hydroelectric Project, Vtn Environmental Sciences (Firm), Interior

Dickey-Lincoln School Lakes Project

This second volume of the Assessment of Alternative Power Transmission Corri-dors related to the Dickey Lincoln/School Hydroelectric Project, contains all relevant background materials to support the mapping and analysis of en-vironmental resource information. Narrative explaining what information was evaluated and the sources and reasons for its consideration are integral to this assessment.


Maine Comprehensive Energy Plan, Maine. Office Of Energy Resources Jan 1976

Maine Comprehensive Energy Plan, Maine. Office Of Energy Resources

Dickey-Lincoln School Lakes Project

Prepare a comprehensive energy resources plan to be revised and updated at least annually and more often as the Director of the Office of Energy Resources or the State Legislature deem necessary.


Hydroelectric Power Potential At Corps Of Engineers Projects : A Report, Ralph L. Trisko, United States. Army., Institiute For Water Resources Jan 1975

Hydroelectric Power Potential At Corps Of Engineers Projects : A Report, Ralph L. Trisko, United States. Army., Institiute For Water Resources

Dickey-Lincoln School Lakes Project

This report completes phase one of the study. It is intended to fill the need, recognized at the outset, for a broad framework within which subsequent more detailed study at the project level might take place. It is an overview of physical hydropower potential in the context of energy and water resources and demands, energy economics, and federal policy, organization, and practices pertaining to hydropower development and marketing.