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Information Literacy In The Active Learning Classroom, Clarence Maybee, Tomalee Doan, Michael Flierl Jan 2016

Information Literacy In The Active Learning Classroom, Clarence Maybee, Tomalee Doan, Michael Flierl

IMPACT Publications

No abstract provided.

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Graph Theoretical Analysis Of The Dynamic Lines Of Collaboration Model For Disruption Response, Arfinandi Ferialdy Jan 2016

Graph Theoretical Analysis Of The Dynamic Lines Of Collaboration Model For Disruption Response, Arfinandi Ferialdy

Open Access Theses

The Dynamic Lines of Collaboration (DLOC) model was developed to address the Network-to-Network (N2N) service challenge found in e-Work networks with pervasive connectivity. A variant of the N2N service challenge found in emerging Cyber-Physical Infrastructures (CPI) networks is the collaborative disruption response (CDR) operation under cascading failures. The DLOC model has been validated as an appropriate modelling tool to aid the design of disruption responders in CPIs by eliciting the dynamic relation among the service team when handling service requests from clients in the CPI network.

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Development Of Drift-Flux Correlation And Flow Pattern Transition Criteria For Two-Phase Cross-Flow In Horizontal Tube Bundles, Keyou Mao Jan 2016

Development Of Drift-Flux Correlation And Flow Pattern Transition Criteria For Two-Phase Cross-Flow In Horizontal Tube Bundles, Keyou Mao

Open Access Theses

In relation to void fraction and flow regime transition predictions of cross-flow in horizontal tube bundle of steam generator, a phenomenological drift-flux correlation and new flow regime transition criteria have been developed to meet the demand on the study of two-phase flow gas and liquid velocities, two-phase pressure drop, heat transfer, flow patterns and flow induced vibrations in the shell side of the U-bend section of the steam generator.

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Differences In Context: Revealing Expert-Novice Graph Knowledge In Biology, Mozhu Li Jan 2016

Differences In Context: Revealing Expert-Novice Graph Knowledge In Biology, Mozhu Li

Open Access Theses

Graphs are typically defined as visual representations that depict and sometimes summarize quantitative data. Visual representation of quantitative data is broadly used in scientific textbooks, papers, and lectures as well as popular media seen in everyday life. Thus, understanding graphs and data became an essential skill for all students to master. However, correctly and fully using graphs requires a person to have multiple competencies (diSessa & Sherin, 2000). For an instance, during graph construction, variables need to be identified and characterized, data are screened and often reduced, and a graph type needs to be chosen that is appropriate for the …

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Multi-Objective Optimization Of The Switched Reluctance Motor For Improved Performance In A Heavy Hybrid Electric Vehicle Application, Sashankh Ravi Jan 2016

Multi-Objective Optimization Of The Switched Reluctance Motor For Improved Performance In A Heavy Hybrid Electric Vehicle Application, Sashankh Ravi

Open Access Theses

The goal of this research is to improve the performance of the switched reluctance

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Mitigation Of Dc-Link Voltage Oscillations Caused By Resolver Error In An Electric Vehicle Drivetrain, Ayesha Sayed Jan 2016

Mitigation Of Dc-Link Voltage Oscillations Caused By Resolver Error In An Electric Vehicle Drivetrain, Ayesha Sayed

Open Access Theses

Resolvers are commonly used to measure the rotor position in motor drive applica-

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Profile Fitting In Crowded Astronomical Images, Raja Manish Jan 2016

Profile Fitting In Crowded Astronomical Images, Raja Manish

Open Access Theses

Around 18,000 known objects currently populate the near Earth space. These constitute active space assets as well as space debris objects. The tracking and cataloging of such objects relies on observations, most of which are ground based. Also, because of the great distance to the objects, only non-resolved object images can be obtained from the observations.

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Design And Fabrication Of A Microelectromechanical Double-Ended Tuning Fork Strain Gauge, Achilleas Bardakas Jan 2016

Design And Fabrication Of A Microelectromechanical Double-Ended Tuning Fork Strain Gauge, Achilleas Bardakas

Open Access Theses

A double-ended tuning fork (DETF) strain gauge that can be used for strain and force measurements is designed and fabricated in this work. The design of the sensor was augmented by an analytical model using the linear beam theory, by numerical simulations performed in COMSOL Multiphysics 5.2 and by an electromechanical state-space model simulated in Matlab. The predicted sensitivity of the gauge was 57.7 Hz/με for the analytical formulation and 49.8 Hz/με for the FEM model. The fabrication of the device was performed at the Birck Nanotechnology Center cleanroom using UV photolithography for metal pad and device layer definition, followed …

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Establishing And Improving Control Strategies That Sustain Plant Health In A Botanical Bio-Filter, Bhargav Ronjoy Rajkhowa Jan 2016

Establishing And Improving Control Strategies That Sustain Plant Health In A Botanical Bio-Filter, Bhargav Ronjoy Rajkhowa

Open Access Theses

This research is a study of the effectiveness of the mechanical, hydroponic and software components of a biowall that improves indoor air quality through plant assisted phytoremediation. The research investigates the ability of the device to sustain plant health in a controlled environment over an extended period. This is because, the biowall has intermittent airflow through it. This airflow, has a detrimental effect on the health of the plants in the biowall. After studying the horticultural and mechanical aspects needed to operate a biowall, appropriate control algorithms were developed. These algorithms controlled the biowall’s lights, irrigation, and fan.

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Usability Of Real Time Data For Cold Chain Monitoring Systems, Arush Saxena Jan 2016

Usability Of Real Time Data For Cold Chain Monitoring Systems, Arush Saxena

Open Access Theses

One in every nine people on earth do not have enough food to lead a healthy life, according to The World Food Programme. That's nearly 800 million people. In addition to that, billions of tons of perishable food products are wasted during transportation and logistics before it reaches the end consumers as thousands of people die every day due to hunger related causes. Perishable foods, medicine and other goods impose severe challenges on inventory management. Businesses debate on whether to keep limited stock just to meet demand and fear losing additional customers or keep excess stock and face the risk …

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Accuracy And Performance Improvements In Custom Cnn Architectures, Aliasger Zaidy Jan 2016

Accuracy And Performance Improvements In Custom Cnn Architectures, Aliasger Zaidy

Open Access Theses

Convolutional Neural Networks (CNNs) are biologically inspired feed forward artificial neural networks. The artificial neurons in CNNs are connected in a manner similar to the neurons in the mammalian visual system. CNNs are currently used for image recognition, semantic segmentation, natural language processing, playing video games and many other applications. A CNN can consist of millions of neurons that require billions of computations to produce a single output.

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A Micromechanical Fracture Model For Ductile-Brittle Interfaces, Dhrubajyoti Datta Jan 2016

A Micromechanical Fracture Model For Ductile-Brittle Interfaces, Dhrubajyoti Datta

Open Access Theses

The micromechanical properties of a bimaterial interface depend on the (i) bonded slip and friction parameters (ii) release of fracture energy during crack growth and (iii) propagation, residual energy and shape formulations defining the failure envelope. A non-empirical fracture model is proposed for a ductile-brittle bimaterial interface. Such interfaces occur in Steel-Concrete (SC) composite wall modules, which are building blocks of nuclear and containment facilities. Similar bimaterial interfaces can occur in geotechnical structures, aerospace, ceramics and other composite applications. The thesis identifies the primary microstructural failure modes associated with such interfaces. A controlled volume fracture model for adhesively bonded interfaces …

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Understanding, Evaluating, And Diagnosing Undergraduate Student Difficulties With Graph Choice And Construction, Aakanksha Angra Jan 2016

Understanding, Evaluating, And Diagnosing Undergraduate Student Difficulties With Graph Choice And Construction, Aakanksha Angra

Open Access Dissertations

Creating effective graphical representations of biological data is an essential component in the practices of science and involves engaging concepts and skills of quantitative literacy. With undergraduate biology students increasingly involved in scientific inquiry and experimentation, they are faced with the task of choosing and creating appropriate graphical representations of their data to communicate their findings. However, difficulties with graph choice and construction that were previously documented in literature, still exist today at both the K-12 and undergraduate levels. The purpose of this dissertation is to understand the reasoning involved behind choosing certain graph types and the process that occurs …

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Sustainability Assessment Of Large-Scale Carbon Capture And Sequestration Deployment Outside The System Boundaries - Opportunities And Challenges, Mohammed Abotalib Jan 2016

Sustainability Assessment Of Large-Scale Carbon Capture And Sequestration Deployment Outside The System Boundaries - Opportunities And Challenges, Mohammed Abotalib

Open Access Dissertations

Most power generation in the United States is derived from the combustion of fossil fuels, primarily coal and natural gas. As a result, greenhouse gases (GHGs) are generated, and they act to trap radiant heat from the Earth. When GHGs are discussed, attention is usually concentrated on carbon dioxide (CO2) because it is believed to be the most manageable anthropogenic GHG. Therefore, introducing new technologies, primarily those which deal with CO2 capture and storage, is seen as a potential option for managing GHGs. Oil and gas reservoirs, saline formations, and un-mineable coal beds are examples of underground CO2 storage sites. …

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Social Network Influence On Ridesharing, Disaster Communications, And Community Interactions, Arif Mohaimin Sadri Jan 2016

Social Network Influence On Ridesharing, Disaster Communications, And Community Interactions, Arif Mohaimin Sadri

Open Access Dissertations

The complex topology of real networks allows network agents to change their functional behavior. Conceptual and methodological developments in network analysis have furthered our understanding of the effects of interpersonal environment on normative social influence and social engagement. Social influence occurs when network agents change behavior being influenced by others in the social network and this takes place in a multitude of varying disciplines. The overarching goal of this thesis is to provide a holistic understanding and develop novel techniques to explore how individuals are socially influenced, both on-line and off-line, while making shared-trips, communicating risk during extreme weather, and …

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An Ecology Of Place In Composition Studies, Jonathan Scott Wallin Jan 2016

An Ecology Of Place In Composition Studies, Jonathan Scott Wallin

Open Access Dissertations

Wallin, Jonathan Scott, Ph.D, Purdue University, December 2016. An Ecology of Place in Composition Studies. Major Professor: Patricia Sullivan.

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Development Of Novel Design And Control Approaches For Integrated Crystallization Operation And Systems, Yang Yang Jan 2016

Development Of Novel Design And Control Approaches For Integrated Crystallization Operation And Systems, Yang Yang

Open Access Dissertations

Crystallization is an important separation and purification technique for a wide variety of solid products in pharmaceutical, food and fine chemical industries. The production of more than 90% of the active pharmaceutical ingredients (APIs) involves crystallization. Therefore, it is crucial to design and control pharmaceutical crystallization processes so that the desired process requirement and product critical quality attributes (CQAs), including process yield, crystal purity, crystal size distribution (CSD), crystal shape and polymorphic form can be obtained. Studies about cooling or antisolvent only batch crystallization of pure APIs have been extensively reported in the literature in the last century. But design …

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Developing Condition-Based Triggers For Bridge Deck Maintenance And Rehabilitation Treatments, Zhibo Zhang Jan 2016

Developing Condition-Based Triggers For Bridge Deck Maintenance And Rehabilitation Treatments, Zhibo Zhang

Open Access Dissertations

The bridges in the U.S. highway system suffer from deficiencies in both their structural condition and functionality. In an effort to improve the condition of bridges, highway agencies continually seek effective and efficient approaches to maintenance and rehabilitation (M&R) treatments for their bridges. However, one drawback to new approaches is that highway agencies have long relied on the subjective judgment of their engineers to determine the time or condition at which to implement the treatments as well as the types of treatments to be applied. The literature shows that previous researchers mainly focused on time-based M&R strategies, but there have …

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Structural Elucidation Of Deprotonated Analytes Via Tandem Mass Spectrometry Based On Ion-Molecule Reactions And Collision-Activated Dissociation, Hanyu Zhu Jan 2016

Structural Elucidation Of Deprotonated Analytes Via Tandem Mass Spectrometry Based On Ion-Molecule Reactions And Collision-Activated Dissociation, Hanyu Zhu

Open Access Dissertations

Mass Spectrometry has emerged as a powerful analytical tool for the characterization of unknown molecules. Molecular weight information and chemical formulas of the unknowns can be derived by measuring the m/z value of the ionized analyte. In addition, structural information can be obtained via tandem mass spectrometry methods such as collision-activated dissociation (CAD). However, CAD does not always guarantee unambiguously assignment of chemical structures, therefore, additional tandem mass spectrometric methods such as ion-molecule reactions were developed.

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Characterization Of Water Mediated Hydrophobic And Ionic Interactions Using Raman Spectroscopy, Samual Robert Zukowski Jan 2016

Characterization Of Water Mediated Hydrophobic And Ionic Interactions Using Raman Spectroscopy, Samual Robert Zukowski

Open Access Dissertations

Raman spectroscopy can be combined with multivariate curve resolution (MCR),

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Carbon-Based Nanomaterials And Their Ensembles For High Temperature Thermal Applications, Menglong Hao Jan 2016

Carbon-Based Nanomaterials And Their Ensembles For High Temperature Thermal Applications, Menglong Hao

Open Access Dissertations

Carbon nanomaterials, mainly including carbon nanotubes and graphene, have high potential for heat transfer applications at high temperatures because of their superb heat transport properties and good thermal stability. However, due to the small physical sizes of carbon nanomaterials, real-world applications often require an ensemble of them. The present study aims to characterizing the thermal properties of carbon nanomaterial ensembles and understanding the underlying mechanism with an emphasis on high temperature applications.

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Low-Cost And Energy-Efficient Solutions For Multicomponent Distillation, Gautham Madenoor Ramapriya Jan 2016

Low-Cost And Energy-Efficient Solutions For Multicomponent Distillation, Gautham Madenoor Ramapriya

Open Access Dissertations

Distillation accounts for 90-95% of all the separations on a chemical plant, and for about 3% of the world energy consumption. Even modest improvements to the process of distillation can have tremendous impact on the chemical economy world over. The goal of a major part of this thesis is to use process intensification methods to present, thoroughly investigate and systematically synthesize new processes for multicomponent separations which can serve as attractive candidates for distillation technology of tomorrow.

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A Methodology To Determine Non-Fixed Performance Based Thresholds For Infrastructure Rehabilitation Scheduling, Jackeline Murillo Hoyos Murillo Hoyos Jan 2016

A Methodology To Determine Non-Fixed Performance Based Thresholds For Infrastructure Rehabilitation Scheduling, Jackeline Murillo Hoyos Murillo Hoyos

Open Access Dissertations

In an era of increasing demand and loading, aging infrastructure, and funding shortfalls, infrastructure agencies continue to seek cost-effective solutions to persistent and pervasive questions regarding the upkeep of their physical assets. One such question is the appropriateness of the current fixed condition thresholds used at several agencies for rehabilitation timing purposes, whether there is the possibility of having flexible rather than fixed thresholds, and determining what these thresholds should be. A related question is how these flexible thresholds may vary, depending on the objectives of the decision maker, the relative weight of agency and user costs, and the form …

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Investigation Of Novel Displacement-Controlled Hydraulic Architectures For Railway Construction And Maintenance Machines, Damiano Padovani Jan 2016

Investigation Of Novel Displacement-Controlled Hydraulic Architectures For Railway Construction And Maintenance Machines, Damiano Padovani

Open Access Dissertations

This dissertation aims at showing how to transform hydraulic systems of railway multi-actuator machinery characterized by inefficient state-of-the-art systems into the 21st Century. Designing machines that are highly efficient, productive, reliable, and cost affordable represents the target of this research. In this regard, migrating from valve-controlled architectures to displacement-controlled layouts is the proper answer. Displacement-controlled systems remove the losses generated by flow throttling typical of conventional circuits, allow an easy implementation of energy recovery (e.g. during regenerative braking), and create the possibility for the use of hybrid systems capable of maximizing the downsizing of the combustion engine. One portion of …

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Approaching Dna Methylation At The Nanoscale, Yi Cui Jan 2016

Approaching Dna Methylation At The Nanoscale, Yi Cui

Open Access Dissertations

Epigenetics involves a variety of biochemical modifications occurring on chromatin that are able to regulate and fine-tune genetic activities without altering the underlying DNA sequence. So far, four types of epigenetic modulation have been extensively studied: DNA methylation, histone post-translational modification, non-coding RNA, and nuclear organization. A fast-growing body of evidence suggests that epigenetic mechanism plays a fundamental role in physiology and pathology. Of the elucidated epigenetic processes, DNA methylation is the one under intense research due to its direct impact on gene expression, which dynamically bridges the microscale genotype and macroscale phenotype. However, to date our understanding of DNA …

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Struggling Students Become Successful Art Mentors: A Mixed Method Multi-Case Study, Amanda Mayes Jan 2016

Struggling Students Become Successful Art Mentors: A Mixed Method Multi-Case Study, Amanda Mayes

Open Access Dissertations

In the era of high stakes testing and teacher accountability, schools in the US continue the fight to prevent high school drop-outs and meet the needs of academically struggling students. Both the visual arts and mentoring programs have been shown to improve academic performance and emotional well-being. This study examined the impact of an art mentoring program on academically struggling high school students who became art mentors to elementary students. It considered the impact being an art mentor would have on academic success, delinquent behavior, and self-concept. Results suggest a positive relationship between being an art mentor and academic performance …

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Design, Compact Modeling And Characterization Of Nanoscale Devices, Yanfei Shen Jan 2016

Design, Compact Modeling And Characterization Of Nanoscale Devices, Yanfei Shen

Open Access Dissertations

Electronic device modeling is a crucial step in the advancement of modern nanotechnology and is gaining more and more interest. Nanoscale complementary metal oxide semiconductor (CMOS) transistors, being the backbone of the electronic industry, are pushed to below 10 nm dimensions using novel manufacturing techniques including extreme lithography. As their dimensions are pushed into such unprecedented limits, their behavior is still captured using models that are decades old. Among many other proposed nanoscale devices, silicon vacuum electron devices are regaining attention due to their presumed advantages in operating at very high power, high speed and under harsh environment, where CMOS …

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Significance Of Specific Force Models In Two Applications: Solar Sails To Sun-Earth L4/L5 And Grail Data Analysis Suggesting Lava Tubes And Buried Craters On The Moon, Rohan Sood Jan 2016

Significance Of Specific Force Models In Two Applications: Solar Sails To Sun-Earth L4/L5 And Grail Data Analysis Suggesting Lava Tubes And Buried Craters On The Moon, Rohan Sood

Open Access Dissertations

In the trajectory design process, gravitational interaction between the bodies of interest plays a key role in developing the over-arching force model. However, non-gravitational forces, such as solar radiation pressure (SRP), can significantly influence the motion of a spacecraft. Incorporating SRP within the dynamical model can assist in estimating the trajectory of a spacecraft with greater precision, in particular, for a spacecraft with a large area-to-mass ratio, i.e., solar sails. Subsequently, in the trajectory design process, solar radiation pressure can be leveraged to maneuver the sail-based spacecraft. First, to construct low energy transfers, the invariant manifolds are explored that form …

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The Development Of A Computerized Interactive Teaching Assistant In Physics: The Cita On Chip Project, Cyrus Marazban Vandrevala Jan 2016

The Development Of A Computerized Interactive Teaching Assistant In Physics: The Cita On Chip Project, Cyrus Marazban Vandrevala

Open Access Dissertations

One of the many roles of university instructors is to provide help to students throughout the semester - especially in the form of feedback on homework. Personalized feedback from the instructor might be possible in a small classroom setting, but becomes unmanageable when class sizes grow to dozens or even hundreds of students. As a result, universities are turning to computerized homework systems that guide students through problems and provide focused grades and feedback.

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Models And Optimization For Elective Surgery Scheduling Under Uncertainty Considering Patient Health Condition, Joonyup Eun Jan 2016

Models And Optimization For Elective Surgery Scheduling Under Uncertainty Considering Patient Health Condition, Joonyup Eun

Open Access Dissertations

The managerial aspects to run a healthcare system are becoming increasingly important for patient safety. More than one patients are competing each other to be treated using limited medical resources in a healthcare system. The limited medical resources include surgeons, physicians, anesthesiologists, nurses, operating rooms, wards, etc. Therefore, patient safety is related to how to run a healthcare system with the limited resources.

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