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2015

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Stress-Assisted Grain Growth In Nanocrystalline Metals Inhibited By Grain Boundary Segregation, Yang Zhang Dec 2015

Stress-Assisted Grain Growth In Nanocrystalline Metals Inhibited By Grain Boundary Segregation, Yang Zhang

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Stress-assisted grain growth in nanocrystalline metals transpires collectively with a number of competing deformation mechanisms. In this study, molecular dynamics simulations of surface nanoindentation were performed to quantify the plastic strain distribution among competing mechanisms as a function of grain size and temperature during stress-assisted grain growth in nanocrystalline Ni and a Ni-1 at. % P alloy. Under identical conditions of rate and temperature in nominally the same grain size structure, stress-assisted grain growth found to be prevalent in pure nanocrystalline Ni was virtually absent in the Ni-P alloy with P enriched grain boundaries. A reduction in the deformation temperature …

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Multi-Model Validation Assessment Of Groundwater Flow Simulation Models Using Area Metric Approach, Omkar Aphale Dec 2015

Multi-Model Validation Assessment Of Groundwater Flow Simulation Models Using Area Metric Approach, Omkar Aphale

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

A model's validity, or its goodness-of-fit to the real world system, is commonly assessed by quantifying the level of agreement between the observed data and their corresponding model-simulated outputs. However, the observed data could be uncertain given inaccuracies in the observational tools and techniques while the model-simulated outputs may be incomparable since models are simplified versions, and not exact replicas, of the real world system. This limits the abilities of the traditional validation approaches. Here, an alternative approach called the area metric (Ferson et al. 2008) was adopted for multi-model validation assessment. This approach quantifies the level of agreement between …

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Three-Dimensional Macroporous All-Carbon Scaffolds For Tissue Engineering Applications, Gaurav Lalwani Dec 2015

Three-Dimensional Macroporous All-Carbon Scaffolds For Tissue Engineering Applications, Gaurav Lalwani

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Assembly of carbon nanomaterials into three-dimensional (3D) architectures is necessary to harness their unique physiochemical properties for tissue engineering and regenerative medicine applications. In this dissertation, fabrication and characterization of 3D chemically crosslinked macro-sized (5-8 mm height and 4-6 mm diameter) porous carbon nanotube (CNT) scaffolds, their in vitro cytocompatibility and interactions with human mesenchymal stem cells (hMSCs) are reported. Single- or multi-walled carbon nanotubes (SWCNTs or MWCNTs) scaffolds were fabricated using a novel radical initiated thermal crosslinking and annealing method using SWCNTs or MWCNTs as nanoscale building blocks. The scaffolds possess macroscale interconnected pores, robust structural integrity, stability, and …

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Synthesis Of Carbon-11 Labeled Organic Molecules For Pet Studies, So Jeong Lee Dec 2015

Synthesis Of Carbon-11 Labeled Organic Molecules For Pet Studies, So Jeong Lee

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

PET has played a key role in the field of molecular imaging and nuclear medicine over the past decades. PET represents a non-invasive molecular imaging technique to study and visualize human physiology by detecting positron-emitting radiopharmaceuticals labeled with short half-live radioisotopes (i.e. | 11C, 13N, 15O, and 18F) that visualize in vivo biochemical processes and metabolic pathways (i.e. | glycolysis and protein/DNA synthesis). PET is also an emerging method for measuring body function and tailoring disease treatment in living human by detecting biochemical changes preceding anatomical changes occurring a disease. The capability of imaging quantitatively and with high sensitivity without …

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Digital Implementation Of A Synchronous First-In First-Out ( Fifo) Using Cad Tools, Aseem Gupta Dec 2015

Digital Implementation Of A Synchronous First-In First-Out ( Fifo) Using Cad Tools, Aseem Gupta

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Over the past couple of decades, digital design has prospered many miles. The availability of advanced EDA tools help cut design times, debugging issues and time-to-market (TTM). Understanding the digital design flow has now become crucial and many IP cores are being built in no time with use of advanced tools. The tools for front-end, back-end simulations have given industry freedom to experiment new complex designs. The productivity of a digital designer is also a function of his ability to step up of a ramp and use the EDA tools to achieve faster designs and get the job done. Tools …

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Writing At The Intersection: Understanding International Student Writers, Soni Adhikari Dec 2015

Writing At The Intersection: Understanding International Student Writers, Soni Adhikari

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

In U.S. colleges and universities, non-native English speaking international students are generally described in terms of their challenges with the English language. Even after the focus of scholarship has recently shifted to these students’ strengths as “multilingual†writers, their challenges and strengths in other areas of their development as writers are still overlooked. This thesis addresses the need to inform and influence teaching/learning practices about international multilingual students by using multidimensional frameworks. Considering that international students’ challenges (and strengths) of language intersect with a variety of other academic skills and also their motivation to learn, I argue that in order …

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Statistical Methods For Optimizing Task Performance In Nuclear Medicine Imaging And In X-Ray Breast Imaging, Lin Chen Dec 2015

Statistical Methods For Optimizing Task Performance In Nuclear Medicine Imaging And In X-Ray Breast Imaging, Lin Chen

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

In many medical imaging systems used in radiology, the hardware delivers raw data to a sensor and a computer is used to convert the sensor data to a viewable image by implementing tomographic reconstruction algorithms. The radiologist views the image and performs a task, such as detecting a lesion. Engineers and applied mathematicians seek to improve medical imaging systems by making hardware changes and changes in the reconstruction algorithm. Improvement in this thesis is measured by scalar figures of merit, FOM, for task performance. We consider two modalities: SPECT (Single Photon Emission Computed Tomography) and Contrast-Enhanced DBT (Digital Breast Tomosynthesis). …

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A Novel Methodology For Stochastic Formulation Of Short Term Cloud Cover Forecasts, Ya-Ting Huang Dec 2015

A Novel Methodology For Stochastic Formulation Of Short Term Cloud Cover Forecasts, Ya-Ting Huang

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Following the chaos theory proposed by Lorenz, probabilistic approaches have been widely used in numerical weather prediction research. This paper introduces an innate methodology to measure the uncertainty of stochastic cloud boundary forecast. A stochastic partial differential equation is inserted into a numerical weather prediction model, and backtested to validate the probabilistic results of the model. This methodology can be applied to a variety of topics in numerical weather prediction research. The proposed method is applied to the short term forecast of cloud cover. A two parameter model based on physical principles of wind velocity dispersion and surface evaporation rate …

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Secularization As Pastoral Power: Governmentality And Christianity, Maria Angeles Prado Ballarin Dec 2015

Secularization As Pastoral Power: Governmentality And Christianity, Maria Angeles Prado Ballarin

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

I focus on Foucault's Lectures at the Collège de France in order to show how his genealogy of the modern normalizing society leads him to trace the historical beginnings and the condition of possibility of bio-disciplinary practices of individual and collective government- together with the discourse of the hermeneutics of the subject that serves to justify them- to the organization and development of the Christian pastorate from the fourth century onwards. Taking up Nietzsche's critique of Western Christianity, Foucault analyses the emergence and deployment of the procedures or modalities of modern governmentality as effects of the extension or generalization of …

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A Ϭ Rst-Principles Study Of Structural, Electronic And Optical Properties Of Gan, Zno And (Gan)1ˆ’X(Zno)X, Jian Liu Dec 2015

A Ϭ Rst-Principles Study Of Structural, Electronic And Optical Properties Of Gan, Zno And (Gan)1ˆ’X(Zno)X, Jian Liu

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

The pseudobinary (GaN)$_{1-x}$(ZnO)$_{x}$ alloy is attractive for its high efficiency in photocatalytic water splitting. Its reduced band gap is a main advantage for harvesting solar energy. Short-range order (SRO) dramatically affect the atomic and electronic structures due to the non-isovalent nature of the alloy. In this thesis, I perform Monte-Carlo simulations on a first-principles-based cluster-expansion model to show the existence of SRO in (GaN)$_{1-x}$(ZnO)$_{x}$ alloy. I also construct the “special quasi-ordered structures†to faithfully include SRO in a computationally affordable supercell. Subsequent density-functional theory (DFT) calculations reveal significant influence of SRO on the structural, electronic and optical properties of (GaN)$_{1-x}$(ZnO)$_{x}$ …

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Dynamics Of Atomic Matter Waves In Optical Lattices, Jeremy Brian Reeves Dec 2015

Dynamics Of Atomic Matter Waves In Optical Lattices, Jeremy Brian Reeves

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Quantum gases in optical lattices allow for fundamental studies in atomic and condensed-matter physics and the exploration of novel effects. After a brief introduction to the fundamentals of quantum gas experiments in optical lattices, we discuss two recent experiments focusing on driven matter waves in a one-dimensional optical lattice. The first experiment uses a tilted bichromatic optical lattice to investigate the interplay of disorder and collisional interactions in the accelerated transport of a Bose-Einstein condensate. Here, a screening effect is observed, in which the interactions effectively cancel the damping of Bloch oscillations induced by a (quasi-)disordered potential. This effect can …

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Understanding Social Mobility, Economic Environment, And Their Effects On Social Policy Attitudes, Patrick Lown Dec 2015

Understanding Social Mobility, Economic Environment, And Their Effects On Social Policy Attitudes, Patrick Lown

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Economic opportunity has long been a topic of interest among students of society and politics, and has made its way back to the forefront of inquiry with the resurgence of levels of inequality beyond those observed during the Gilded Age in the 1920s. Recent studies conducted by The Pew Charitable Trust Mobility Project, as well as others, have revealed that despite Americans’ beliefs in a land of opportunity, the chances to get ahead in life have dwindled for many. However, there is a dearth of information about what members of the public think about their own economic mobility and the …

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The Resurrection Of Self: How Deconversion From Religious Belief To Atheism Healed A History Of Rejection, Trauma, And Shame, Amy Phillips Dec 2015

The Resurrection Of Self: How Deconversion From Religious Belief To Atheism Healed A History Of Rejection, Trauma, And Shame, Amy Phillips

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

There are two experiences that atheists have which are not yet well understood: discrimination and deconversion. Through semi-structured interviews, designed to better understand the deconversion process and the relationships of 35 American atheists living in both the Northeast and Southern regions of the United States, a better understanding of these experiences emerged. These individuals had damaging histories, which included abuse, abandonment and/or outsider status. These elements combined with religious teachings yielded a sense of self-as-bad in which respondents experienced feelings of shame, depression, anxiety, and in some cases suicidality. The 25 males, 9 females and 1 transwoman in this study …

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Formal Verification Of Nonlinear Biological Systems, Md Ariful Islam Dec 2015

Formal Verification Of Nonlinear Biological Systems, Md Ariful Islam

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Abstraction and composition have proved to be particularly useful in extending the reach of formal verification. Abstraction reduces the size of the system under investigation by neglecting details irrelevant to the properties of interest. Compositionality allows us to decompose large-scale system into smaller components and verify each component individually and reason about the verification of entire system from verified components. Together, these two techniques permit us to substitute a component with its equivalent abstraction such that the overall system retains the property of interest. In this thesis, we first show that in the context of the Iyer et al. (IMW) …

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Optimal Mass Transport And Its Applications, Zhengyu Su Dec 2015

Optimal Mass Transport And Its Applications, Zhengyu Su

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Optimal Mass Transport theory has deep roots in pure mathematics, combining complex analysis, Riemannian geometry and measure theory. Monge first raised the classical Optimal Mass Transport Problem that concerns determining the optimal way, with minimal transportation cost, to move a pile of soil from one place to another. Kantorovich has proven the existence and uniqueness of the optimal transport plan based on linear program. Monge-Kantorovich optimization has been used in numerous fields from physics, econometrics to computer science including computer vision, medical imaging and statistics. However, it has one fundamental disadvantage that the complexity is $O(k^2)$, which is unacceptable to …

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The Effects Of Ketorolac And Its Enantiomers On Breast Cancer Proliferation And Metastasis, Amanda Sheree Peretti Dec 2015

The Effects Of Ketorolac And Its Enantiomers On Breast Cancer Proliferation And Metastasis, Amanda Sheree Peretti

Biomedical Sciences ETDs

Breast cancer is the second leading cause of cancer related deaths in women. Advanced breast cancer can metastasize to the lungs, liver, bones and brain becoming fatal conditions for many patients. There is a dire need for metastasis preventing medications, however the process required for a medication to become FDA approved for clinical use is long and arduous. Studies have found promising benefits for breast cancer patients given ToradolTM, or racemic ketorolac, as an NSAID during resection surgery. However, long-term use of racemic ketorolac is not recommended. Currently FDA-approved for use in the racemic form, ketorolac has the potential to …

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University Of Dayton Magazine, Winter 2015-16, University Of Dayton Magazine Dec 2015

University Of Dayton Magazine, Winter 2015-16, University Of Dayton Magazine

University of Dayton Alumni Publications

This issue includes articles "Still Crazy After All These Years"; "What the Pope Says (And Why We Care)"; and "Seeking to be Safe".

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Mariah Haffield Honors Portfolio, Mariah Jean Haffield Dec 2015

Mariah Haffield Honors Portfolio, Mariah Jean Haffield

Honors Capstone Portfolios

Mariah Haffield's honors portfolio captured in December 2015.

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The Current Volume 26 : Issue 14, Nova Southeastern University Dec 2015

The Current Volume 26 : Issue 14, Nova Southeastern University

Student Newspapers

No abstract provided.

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Creating A Consolidated Business Systems Toolkit For Enterprise Resource Planning, April Shortt Dec 2015

Creating A Consolidated Business Systems Toolkit For Enterprise Resource Planning, April Shortt

2015 Fall Honors Capstone Projects - Archive

A major problem in many manufacturing facilities revolves around the need to consolidate and streamline production processes. Triumph Aerostructures’ Vought Aircraft Division is experiencing systemic functional redundancies that adversely impacts the efficiency, productivity, and bottom line of the division. An investigation of system usage across all business streams was performed where we analyzed which systems are used for which operational functions, and why these particular systems are utilized. The problem was researched using the DMADV methodology, along with other Six Sigma process analysis tools. Results showed that these problems are due to a lack of lower-level employee training on the …

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Heat Dissipation During Hovering And Forward Flight In Hummingbirds, Don Powers, Bret W. Tobalske, J. Keaton Wilson, Keeley R. Corder Dec 2015

Heat Dissipation During Hovering And Forward Flight In Hummingbirds, Don Powers, Bret W. Tobalske, J. Keaton Wilson, Keeley R. Corder

Faculty Publications - Department of Biological & Molecular Science

Flying animals generate large amounts of heat, which must be dissipated to avoid overheating. In birds, heat dissipation is complicated by feathers, which cover most body surfaces and retard heat loss. To understand how birds manage heat budgets during flight, it is critical to know how heat moves from the skin to the external environment. Hummingbirds are instructive because they fly at speeds from 0 to more than 12ms−1, during which they transit from radiative to convective heat loss. We used infrared thermography and particle image velocimetry to test the effects of flight speed on heat loss from specific body …

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Commencement Program 2015 December: College Of Science, The University Of Texas At Arlington Dec 2015

Commencement Program 2015 December: College Of Science, The University Of Texas At Arlington

Commencement Programs, Photos, and Video

No abstract provided.

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Medium-Range Ensemble Precipitation And Streamflow Forecasting For The Upper Trinity River Basin In Texas Via The Nws Hydrologic Ensemble Forecast Service, Hossein Sadeghi Dec 2015

Medium-Range Ensemble Precipitation And Streamflow Forecasting For The Upper Trinity River Basin In Texas Via The Nws Hydrologic Ensemble Forecast Service, Hossein Sadeghi

Civil Engineering Theses - Archive

Compared to forecasts of short-term precipitation accumulations (daily or shorter) at lead times larger than a few days, those of longer-term accumulations (3-daily or longer) are significantly more skillful owing to the larger temporal scale of aggregation. If one can utilize this skill present in medium-range precipitation forecast in hydrologic prediction, it is very likely that the lead time of hydrologic forecasts, in particular, of streamflow and soil moisture may be extended. Though forecasts of longer-term accumulations of precipitation are more skillful than those of shorter-term accumulations, precipitation forecasts in general are too uncertain to be used as deterministic, or …

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Feasibility Of Underground Freight Transportation (Uft) In Texas, Seyedeh Hosna Mousavipour Dec 2015

Feasibility Of Underground Freight Transportation (Uft) In Texas, Seyedeh Hosna Mousavipour

Civil Engineering Theses - Archive

The U.S. economy is expected to double in size over the next 30 years. Truck and rail freight traffic is expected to increase by approximately 45 percent. Air freight is expected to triple in response to demand for the rapid movement of high-value merchandise, while multimodal shipments will likely double. Texas with a gross state product (GSP) of $1.4 trillion dollars is the second largest economy in the U.S. Its size and population, central location, Gulf coastline, and energy resources require a reliable freight transportation system to facilitate further growth. This thesis focuses on the feasibility of Underground Freight Transportation …

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Bayesian Statistics And Information Fusion For Gps-Denied Navigation, Brian Lee Copp Dec 2015

Bayesian Statistics And Information Fusion For Gps-Denied Navigation, Brian Lee Copp

Mechanical and Aerospace Engineering Dissertations - Archive

It is well known that satellite navigation systems are vulnerable to disruption due to jamming, spoofing, or obstruction of the signal. The desire for robust navigation of aircraft in GPS-denied environments has motivated the development of feature-aided navigation systems, in which measurements of \textit{environmental features} are used to complement the dead reckoning solution produced by an inertial navigation system. Examples of environmental features which can be exploited for navigation include star positions, terrain elevation, terrestrial wireless signals, and features extracted from photographic data. Feature-aided navigation represents a particularly challenging estimation problem because the measurements are often strongly nonlinear, and the …

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Development, Testing And Characterization Of Electronic Skins For Robots, Ritvij Sahasrabuddhe Dec 2015

Development, Testing And Characterization Of Electronic Skins For Robots, Ritvij Sahasrabuddhe

Electrical Engineering Theses - Archive

The main purpose of this thesis is to test and characterize newly developed pressure sensors integrated into robot skin and understand their behavior for different testing parameters such as sensor and skin materials and geometry. Flexible electronic skin is meant to behave similar to human skin acting as a tactile interface with the robot environment. Before placing electronic skin onto robots, it is important to test and characterize such structures. Since the behavior of our pressure sensors embedded in robot skin was still unknown, an experimental setup has been developed in order to test and characterize the sensors and collect …

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Evaluation Of Coding Tools For Screen Content In High Efficiency Video Coding, Shwetha Chandrakant Kodpadi Dec 2015

Evaluation Of Coding Tools For Screen Content In High Efficiency Video Coding, Shwetha Chandrakant Kodpadi

Electrical Engineering Theses - Archive

High Efficiency Video Coding (HEVC) [1] is the latest Video Coding format. It challenges the state-of-the-art H.264/AVC [3] Video Coding standard which is in current use in the industry by being able to reduce the bit rate by 50% and retaining the same video quality. It came into existence in the early 2012 although Joint Collaborative Team on Video Coding (JCT-VC) was formed in January 2001 to carry out developments on HEVC, and ever since then a huge range of development has been going on. On 13 April 2013 [11], HEVC standard also called H.265 was approved by ITU-T, Joint …

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Robotic Wheelchair Platform With Autonomous Mobility, Pragya Neupane Dec 2015

Robotic Wheelchair Platform With Autonomous Mobility, Pragya Neupane

2015 Fall Honors Capstone Projects - Archive

An automated robotic wheelchair can allow for increased efficiency in terms of motion. This work details how through the use of computing, a wheelchair can be teleoperated to produce a system that can obviate the need for manual wheelchairs that can be difficult to operate. At this stage, the system is composed of various components and subsystems interacting to deliver precise control and navigation. By sending and receiving signals between the wheelchair platform and the computer, this system is able to communicate with the wheelchair platform and pass on instructions. The robotic wheelchair platform is able to record movement information, …

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Design For A Variable Pipe Cutting Jig, Truitt Ammons Dec 2015

Design For A Variable Pipe Cutting Jig, Truitt Ammons

2015 Fall Honors Capstone Projects - Archive

Parker-Hannifin is an aerospace company located in Fort Worth, Texas. A large part of their business entails creating custom metal pipes that are used for aerospace applications. These pipes are all bent and cut at different specifications. Currently, the method being used to cut these pipes takes a lot of storage space, it is lengthy, it uses unsafe methodology and it adds up to be costly. My team and I were commissioned by Parker-Hannifin to design a system that will alleviate these problems. The solution that this team has proposed will save the company storage space, lower the time it …

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An Investigation Of The Relation Between Sleep Disordered Breathing And Cognitive Function, Nazaneen Mousavi Dec 2015

An Investigation Of The Relation Between Sleep Disordered Breathing And Cognitive Function, Nazaneen Mousavi

Bioengineering Theses - Archive

Obstructive sleep apnea (OSA) is one of the most prevalent sleep related breathing disorders, with an estimated amount 17% of affected adults in the U.S. Research has linked OSA to mood and cognitive disorders, including Alzheimer’s disease. Structural changes in the brain have also been found to be associated with OSA. Several studies have shown deterioration of cognition in OSA patients because of structural and physiological changes due to apnea. The purpose of this research is to study the correlational relationships between cognitive measures and 1) quantitative measures of sleep quality; 2) measures of sleep disordered breathing; and 3) hypoxia …

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