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Partition Density Functional Theory, Jonathan R. Nafziger Apr 2015

Partition Density Functional Theory, Jonathan R. Nafziger

Open Access Dissertations

Partition density functional theory (PDFT) is a method for dividing a molecular electronic structure calculation into fragment calculations. The molecular density and energy corresponding to Kohn Sham density-functional theory (KS-DFT) may be exactly recovered from these fragments. Each fragment acts as an isolated system except for the influence of a global one-body 'partition' potential which deforms the fragment densities. In this work, the developments of PDFT are put into the context of other fragment-based density functional methods. We developed three numerical implementations of PDFT: One within the NWChem computational chemistry package using basis sets, and the other two developed from …

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Evaluating Breast Cancer Stem Cell Response To Antiangiogenic Therapy, Connor J. Holloway Apr 2015

Evaluating Breast Cancer Stem Cell Response To Antiangiogenic Therapy, Connor J. Holloway

Open Access Theses

Angiogenic inhibitors function by blocking tumor cell signals used to recruit host tissue vasculature to the tumor site, thereby depriving the cancer of the nutriment needed for further expansion. The development and implementation of angiogenic inhibitors in conjunction with standard chemotherapy agents has increased progression-free survival but not overall patient survival. It is hypothesized that chronic exposure to large doses of AAT drugs worsens hypoxic conditions within the tumor mass, selectively stimulating aggressive cancer stem cell populations to grow and proliferate. ^ In this study, the expression of the CSC biomarkers ALDH1, DLL1, and EpCAM were evaluated in breast cancer …

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Delamination Of C/Pekk I-Beam Using Virtual Crack Closure Technique And Cohesive Zone Method, Greeshma Ramakrishna Apr 2015

Delamination Of C/Pekk I-Beam Using Virtual Crack Closure Technique And Cohesive Zone Method, Greeshma Ramakrishna

Open Access Theses

A damage study is conducted on a carbon epoxy/PEKK (poly-ether-ketone-ketone) thermoplastic composite I-Beam, with a pre crack of 100 mm modeled between the top flange and the filler (butt joint between filler and web). This project is in collaboration with Fokker Aerostructures, Netherlands and is part of the Thermoplastic Primary Aircraft Structure innovation program (TAPAS). The C/PEKK I-Beam is modeled after a section of the Gulfstream G650 aircraft's centre beam, which was previously a carbon fiber/epoxy hat-stiffened skin construction. The objective of the thesis is to identify if the crack propagates in the I-Beam within the load range that act …

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Development And Application Of Quantitative Methods For Ecosystem Services, Rebecca A. Logsdon Apr 2015

Development And Application Of Quantitative Methods For Ecosystem Services, Rebecca A. Logsdon

Open Access Dissertations

Ecosystem services are benefits that people receive from the environment. Despite recent exponential increases in ecosystem service research, the ecosystem service framework has made little impact on policy and land management decisions, especially in the United States. Two of the main limitations for a lack of ecosystem service considerations in both policy and land management decisions are a need for more advanced quantification methods and the lack of engagement of key stakeholders who are responsible for making land management decisions. This research seeks to address these two limitations by testing and improving quantification methods of ecosystem services and by evaluating …

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Modeling On Single-Sided Wind-Driven Natural Ventilation, Haojie Wang Apr 2015

Modeling On Single-Sided Wind-Driven Natural Ventilation, Haojie Wang

Open Access Dissertations

Buildings use 40% of the total primary energy in the United States, with a significant part of this energy being used for ventilation and cooling. Despite the large amount of energy used in buildings, reports have shown that the indoor air quality (IAQ) and thermal comfort are not satisfactory. The lowered productivity due to the bad IAQ could cause $125 billion loss per year and the sick building syndromes could cause $32 billion direct healthcare costs. Most of the problems related to IAQ are caused by insufficient fresh outdoor air supply or lack of maintenance with traditional mechanical ventilation systems. …

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Spatial Analysis Of Passenger Vehicle Use And Ownership And Its Impact On The Sustainability Of Highway Infrastructure Funding, Matthew Volovski Apr 2015

Spatial Analysis Of Passenger Vehicle Use And Ownership And Its Impact On The Sustainability Of Highway Infrastructure Funding, Matthew Volovski

Open Access Dissertations

Across the United States, the sustainability of highway funding is at risk due to increasing need and uncertainty in the factors that drive revenue. Past studies on highway funding sustainability have identified that the root cause of changing highway revenue are the shifts in social demographics and economic characteristics. Unfortunately, from the revenue perspective (the focus of this dissertation), the ability of previous research to account for these factors has been rather limited in two ways; first, the inability to accurately assess current regional vehicle use (a typical prerequisite for statistical modeling of highway revenues) due to difficulties associated with …

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Assessment Of The Learning Climate, Basic Psychological Needs And Perceived Knowledge Transfer In An Active Classroom, Sanjana Hemanth Apr 2015

Assessment Of The Learning Climate, Basic Psychological Needs And Perceived Knowledge Transfer In An Active Classroom, Sanjana Hemanth

Open Access Theses

he thesis analyzes the impact of introducing active learning components by measuring the learning climate, basic psychological needs and perceived knowledge transfer of one course. This thesis has utilized the data obtained by the IMPACT team to evaluate the learning climate of the classroom with the evolution of the course by measuring the cognitive presence, learning presence and teaching presence in each of the semesters. The results of this study show the impact of the different elements of active learning in a classroom. The study of data over three semesters for one class is a model for other large intake …

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A Probabilistic Model Of Benefit-Cost Analysis For Highway Construction Projects, Yue He Apr 2015

A Probabilistic Model Of Benefit-Cost Analysis For Highway Construction Projects, Yue He

Open Access Theses

Deterministic method occupies the predominant position in economic analysis. However, by using a single value to estimate the project value, deterministic method would hide the risk under it. Analysts may make incorrect judgments by looking at a value without knowing the likelihood of its occurrence and the consequences of its occurrence. A probabilistic model was developed in this study to address this problem. It was found in this study that the traffic flows on Indiana highways follow logistic distributions rather than normal distributions as generally believed. The application of the probabilistic model was illustrated through a case study. The results …

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The "Real Black Power": Mattie Coney And The Pragmatic Politics Of Black Conservatism, Olivia M. Hagedorn Apr 2015

The "Real Black Power": Mattie Coney And The Pragmatic Politics Of Black Conservatism, Olivia M. Hagedorn

Open Access Theses

This project examines the life and activism of Mattie Rice Coney, a black civic leader from Indianapolis, Indiana. Coney founded the Citizens Forum, Inc., in July 1964 to facilitate the smooth implementation of recently enacted civil rights legislation such as the 1964 Civil Rights Act and Indianapolis's Open Housing Ordinance. Employing a language of racial uplift and civic duty, Coney deftly crafted an image of black conservatism that appealed to moderate white conservatives. In articulating a "quiet," alternative civil rights agenda centered on individual improvement, Coney legitimized her sociopolitical status among whites as a respectable black leader. This status helped …

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Impact Of Biogenic Volatile Organic Compounds On Peroxyacetyl Nitrate Production In The Southeast United States, Christopher John Groff Apr 2015

Impact Of Biogenic Volatile Organic Compounds On Peroxyacetyl Nitrate Production In The Southeast United States, Christopher John Groff

Open Access Theses

Our atmosphere is arguably the fundamental entity that has made life on Earth possible. Knowledge of the delicate nature of our atmosphere continues to spread as "green" initiatives promote awareness of human influence on the environment. However, many climate scientists fear that unless immediate mitigation occurs, the reversal of human impact on our planet will be impossible, leading to unknown consequence. Perturbations to natural processes are likely to cause drastic change to the planet as we know it and ultimately result in significant health issues. It is important to push the boundaries of our understanding of atmospheric processes with intent …

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Xbox One File System Data Storage: A Forensic Analysis, Caitlin Elizabeth Gravel Apr 2015

Xbox One File System Data Storage: A Forensic Analysis, Caitlin Elizabeth Gravel

Open Access Theses

The purpose of this research was to answer the question, how does the file system of the Xbox One store data on its hard disk? This question is the main focus of the exploratory research and results sought. The research is focused on digital forensic investigators and experts. An out of the box Xbox One gaming console was used in the research. Three test cases were created as viable scenarios an investigator could come across in a search and seizure of evidence. The three test cases were then analyzed individually and cross analyzed with each other for differing digital artifacts. …

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Trajectory Generation For Lane-Change Maneuver Of Autonomous Vehicles, Ashesh Goswami Apr 2015

Trajectory Generation For Lane-Change Maneuver Of Autonomous Vehicles, Ashesh Goswami

Open Access Theses

Lane-change maneuver is one of the most thoroughly investigated automatic driving operations that can be used by an autonomous self-driving vehicle as a primitive for performing more complex operations like merging, entering/exiting highways or overtaking another vehicle. This thesis focuses on two coherent problems that are associated with the trajectory generation for lane-change maneuvers of autonomous vehicles in a highway scenario: (i) an effective velocity estimation of neighboring vehicles under different road scenarios involving linear and curvilinear motion of the vehicles, and (ii) trajectory generation based on the estimated velocities of neighboring vehicles for safe operation of self-driving cars during …

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Characterization Of Wake Effects And Loading Status Of Wind Turbine Arrays Under Different Inflow Conditions, Xiangyu Gao Apr 2015

Characterization Of Wake Effects And Loading Status Of Wind Turbine Arrays Under Different Inflow Conditions, Xiangyu Gao

Open Access Theses

The objective of the present work is to improve the accuracy of Actuator Line Modeling (ALM) in predicting the unsteady aerodynamic loadings on turbine blades and turbine wake by assessing different methods used to determine the relative velocity between the rotating blades and wind. ALM is incorporated into a Large Eddy Simulation (LES) solver in OpenFOAM (Open Field Operations and Manipulations). The aerodynamic loadings are validated by experiment results from National Renewable Energy Laboratory (NREL). Turbine wakes are validated by predictions of large eddy simulation using exact 3D blade geometries from a two-blade NREL Phase VI turbine. Three different relative …

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Air Traffic Management Under Uncertain Weather Impact, Le Gao Apr 2015

Air Traffic Management Under Uncertain Weather Impact, Le Gao

Open Access Theses

Air traffic management under uncertain weather impact is a difficult problem. In this thesis, by dividing the whole air traffic systems into small cells, a new method using database to integrate weather and flight data is proposed. An algorithm has been developed to project weather data onto cells. This research also uses a predictive view to find ights which are affected by severe weather. And a prototype detour algorithm is applied on those flights based on the status information of each cell.

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Drop Volume Modulation Via Modulated Contact Angle In Inkject Systems, Aaron Fulton Apr 2015

Drop Volume Modulation Via Modulated Contact Angle In Inkject Systems, Aaron Fulton

Open Access Theses

To date, there are limited options in the ability to adjust feature sizes when inkjet printing. The reduction of nozzle size has been the primary method by which smaller features are created. Prior attempts to reduce feature sizes have all come with some restriction or another, as they are only accessible on certain systems, are difficult to manufacture, tune, cause clogging, etc. Few attempts to create droplets of smaller radii than that of the nozzle from which they are produced have been successful. Additionally, many fluids cannot be jetted whatsoever. Existing methods pertain largely to piezoelectric inkjet printing and time …

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The Theory Of Imaginative Resistance: Narrative Conflict & Contested Realities In The Right To Die Versus Disability Studies Perspectives On Medical Euthanasia, Jessica Fawley Apr 2015

The Theory Of Imaginative Resistance: Narrative Conflict & Contested Realities In The Right To Die Versus Disability Studies Perspectives On Medical Euthanasia, Jessica Fawley

Open Access Theses

In this thesis, I introduce a philosophic concept termed "imaginative resistance," a concept which targets the unimaginability of narratives, which I argue offers new insights into polarized communication. I discuss the philosophic debate on imaginative resistance to date, and piece out central puzzles and approaches. I show that imaginative resistance can be applied to broader types of communication than those currently being discussed by philosophers, and indicate that polarized debates are especially likely places to uncover imaginative resistance. I discuss, and respond to, a recent article by Susan M. Behuniak (2011) in which she analyzes a subsection of the contemporary …

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Visual Translation Of Urban Typography, Fahinaz Ferdous Apr 2015

Visual Translation Of Urban Typography, Fahinaz Ferdous

Open Access Theses

This paper focuses on aspects that can be looked upon in translating typography found in the urban environment of Dhaka and Chicago, how we can relate and interpret typography with the help of contextual design elements, images as well as historic references. Layers behind perception of typefaces, variation in the geographic location of two cities moreover the cultural differences make it an even more interesting subject matter to examine.

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Securing Communication Within The Harms Model For Use With Firefighting Robots, Maxwell D. Dewees Apr 2015

Securing Communication Within The Harms Model For Use With Firefighting Robots, Maxwell D. Dewees

Open Access Theses

Humans and robots must work together in increasingly complex networks to achieve a common goal. In this research, firefighting robots are a part of a larger, decentralized system of humans, agents, robots, machines, and sensors (HARMS). Although communication in a HARMS model has been utilized in previous research, this new study looks at the security considerations of the communications layer of the HARMS model. A network attack known as a man-in-the-middle attack is successfully demonstrated in this paper. Then, a secure communications protocol is proposed to help provide confidentiality and authentication of HARMS actors. This research is applied to any …

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Improving Product Design Phase For Engineer To Order (Eto) Product With Knowledge Base Engineering (Kbe), Hanhdung Thi Dinh Apr 2015

Improving Product Design Phase For Engineer To Order (Eto) Product With Knowledge Base Engineering (Kbe), Hanhdung Thi Dinh

Open Access Theses

In industry currently Computer Aided Design (CAD) is an important tool for the modification, analysis, or optimization of the 3D virtual environment that replicates the physical product. CAD software is an efficient and reliable tool. However, as globalization increases customer demands, this process needs to be faster and more efficient to accommodate changing product design situations, especially for Engineer-to- Order (ETO) products. ^ The traditional method of product design process is to operate CAD software without argumentation. Design engineers create CAD prototypes and drawings based on available knowledge and information which comes from engineering experts, company standards, industrial practices as …

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Password Strength Analysis: User Coping Mechanisms In Password Selection, Brian Thomas Curnett Apr 2015

Password Strength Analysis: User Coping Mechanisms In Password Selection, Brian Thomas Curnett

Open Access Theses

The security that passwords provide could be seriously flawed due to the way people cope with having to memorize and recall their passwords. The National Institute of Standards and Technology (NIST) standard that is used to measure the password strength, known as entropy, is designed for a single use and does not consider that users may choose to keep parts of their password across password changes. This study shows that a portion of users keep some information from previous passwords across changes. These habits which will be called coping mechanisms that over time serve to erode the protection provided by …

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Conflict And Error Management: A Case In The Furniture Industry, Glenn Candranegara Apr 2015

Conflict And Error Management: A Case In The Furniture Industry, Glenn Candranegara

Open Access Theses

The purpose of this study is to investigate and provide tools for the furniture industry, for detecting and preventing damage from propagating errors. Many of the errors cascading in a furniture manufacturing facility are typically detected only after the original process that causes the error had already caused errors. Previous research has developed and validated theoretical methods, such as CEPD, to prevent and detect errors and conflicts. This thesis is the first effort to implement the logic of CEPD in the furniture industry. There are four relevant measures that are analyzed and improved in this thesis; they are preventability, reliability, …

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Modeling And Analysis Of A Resonant Nanosystem, Scott L. Calvert Apr 2015

Modeling And Analysis Of A Resonant Nanosystem, Scott L. Calvert

Open Access Theses

The majority of investigations into nanoelectromechanical resonators focus on a single area of the resonator's function. This focus varies from the development of a model for a beam's vibration, to the modeling of electrostatic forces, to a qualitative explanation of experimentally-obtained currents. Despite these efforts, there remains a gap between these works, and the level of sophistication needed to truly design nanoresonant systems for efficient commercial use. Towards this end, a comprehensive system model for both a nanobeam resonator and its related experimental setup is proposed. Furthermore, a simulation arrangement is suggested as a method for facilitating the study of …

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Numerical Characterization Of Convective Heat Transfer Of Low-Rise Buildings, Ranchi Chen Apr 2015

Numerical Characterization Of Convective Heat Transfer Of Low-Rise Buildings, Ranchi Chen

Open Access Theses

The convective heat transfer coefficient (CHTC) is an important parameter to evaluate the efficiency of building-integrated photovoltaic/Thermal (PV/T) system and the energy exchange within the turbulent atmospheric boundary layer. Reynolds-average Navier-Stokes approach has been frequently used to predict the CHTC at the surface of low rise roof but incapable of predicting transient behavior of separation, reattachment and recirculation both on the windward and leeward surface. However, Large Eddy Simulation approach (LES) could provide accurate flow field and temperature field around the low rise building. ^ The current study uses Large Eddy Simulation with Smagorinsky-Lily model and the Shear Stress Transport …

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Low Income, Supermarket Accessibility, And The Transportation Network: A Multimodal Analysis Identifying Areas Of Poor Accessibility And Intervention Strategies In Indianapolis, Indiana, Andrea Leigh Bailey Apr 2015

Low Income, Supermarket Accessibility, And The Transportation Network: A Multimodal Analysis Identifying Areas Of Poor Accessibility And Intervention Strategies In Indianapolis, Indiana, Andrea Leigh Bailey

Open Access Theses

The United States Department of Agriculture (USDA) Economic Research Service estimates that 23.5 million people live in food deserts, over half of which are considered low-income residents. Accurately defining a food desert is crucial as the designated areas can benefit from grant opportunities and funding priority. To qualify as an urban food desert, the USDA requires that at least 500 residents or one-third of the population live outside a one-mile buffer from a supermarket as well as have a median income of less than 80% of the area average or a poverty rate of greater than 20%. Approaches in the …

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Digital Forensics And Community Supervision: Making A Case For Field Based Digital Forensics Training, Christopher Michael Flory Apr 2015

Digital Forensics And Community Supervision: Making A Case For Field Based Digital Forensics Training, Christopher Michael Flory

Open Access Theses

In this paper I will review the literature concerning investigator digital forensics models and how they apply to field investigators. A brief history of community supervision and how offenders are supervised will be established. I will also cover the difference between community supervision standards and police standards concerning searches, evidence, standards of proof, and the difference between parole boards and courts. Currently, the burden for digital forensics for community supervision officers is placed on local or state law enforcement offices, with personnel trained in forensics, but may not place a high priority on outside cases. Forensic field training for community …

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Asymptotic Modelling Of A Thermopiezoelastic Anisotropic Smart Plate, Yufei Long Apr 2015

Asymptotic Modelling Of A Thermopiezoelastic Anisotropic Smart Plate, Yufei Long

Open Access Theses

Motivated by the requirement of modelling for space flexible reflectors as well as other applications of plate structures in engineering, a general anisotropic laminated thin plate model and a monoclinic Reissner-Mindlin plate model with thermal deformation, two-way coupled piezoelectric effect and pyroelectric effect is constructed using the variational asymptotic method, without any ad hoc assumptions. Total potential energy contains strain energy, electric potential energy and energy caused by temperature change. Three-dimensional strain field is built based on the concept of warping function and decomposition of the rotation tensor. The feature of small thickness and large in-plane dimension of plate structure …

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Future-Proof Designers, Joshua Lowe Apr 2015

Future-Proof Designers, Joshua Lowe

Open Access Theses

The need for professional graphic designers may be fading. Their value may not hold up over time. Soon longstanding skills such as photo manipulation, color combination, and logo generation will instead be accomplished with the click of a button by anyone with internet access. Because of this, educators, students, and professionals must ask what should be done to maintain or increase their value regardless of what the future holds? Furthermore, what skills and characteristics can be identified as being most valuable, timeless, and effective for the success of a designer, not just upon entering the field, but throughout their entire …

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International Comparison Of Cost Efficiency Of Corn And Soybean Production, Elizabeth Anne Lunik Apr 2015

International Comparison Of Cost Efficiency Of Corn And Soybean Production, Elizabeth Anne Lunik

Open Access Theses

Comparing detailed production costs and input use across countries allows producers to see if they are competitive with similar operations in other countries. This thesis looks at the cost efficiency of a sample of corn and soybean farms representing 16 countries to understand efficiency and cost trends at the farm-level, compare these farms, and identify factors that might explain farm-level performance. This analysis delves into detailed production data to calculate an important international benchmark, which is currently not available. ^ The data consist of a six-year (2008-2013) unbalanced panel of 35 corn-producing farms and 16 soybean-producing farms, which come from …

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Extended Scaffolding: A More General Theory Of Scaffolded Cognition, Zachary R. Murphy Apr 2015

Extended Scaffolding: A More General Theory Of Scaffolded Cognition, Zachary R. Murphy

Open Access Theses

New and emerging technologies called neuroprostheses are challenging our ideas about where one's mind ends and the environment begins. Cochlear implants, which completely replace the functioning of the inner ear, are now a common treatment for deafness. Berger et al. developed a device that replaces long-term memory in rats (2012), while Hampson et al. created a brain-machine interface that converts a desire to move one's arm into the motor neuron impulses required to achieve that movement (2013)--both offering promising treatments for dementia, Alzheimer's disease, and paralysis. Deep brain stimulation is now a common way of regulating neural activity to manage …

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Sentence Final Particles In Shanghainese: Navigating The Left Periphery, Ethan C. Myers Apr 2015

Sentence Final Particles In Shanghainese: Navigating The Left Periphery, Ethan C. Myers

Open Access Theses

The purpose of the present study was to provide a modern syntactic analysis of Shanghainese, the regional language spoken in Shanghai, China. While Shanghainese has received significantly less exposure in the published literature compared to other regional counterparts, there is much that the language can contribute to the overall study of human language. In spite of the fact that Shanghainese has been experiencing a decline in first language learners in recent generations, this thesis aims to increase its exposure in the academic discourse and enforce the legitimacy of its standing as a distinct, living language and as a valuable piece …

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