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A Proposed Method To Identify Requirements Significant To Mass Reduction, James Mclellan May 2010

A Proposed Method To Identify Requirements Significant To Mass Reduction, James Mclellan

All Theses

Reducing the mass of engineering products holds the potential for significant benefits by reducing material costs, environmental impact, transportation costs, and in the case of vehicles, reducing fuel consumption. While there are many approaches for reducing mass, analyzing requirements has the greatest potential since requirements definition is the earliest phase of product development, where the most design freedom exists. This thesis proposes a requirement analysis method that identifies requirements that impact significant amounts of mass. The research hypothesis is: Engineering requirements can be represented and processed in a systematic manner and linked to physical components and systems, thus enabling mass …

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Timing Side-Channel Attacks On Ssh, Harikrishnan Bhanu May 2010

Timing Side-Channel Attacks On Ssh, Harikrishnan Bhanu

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In most secure communication standards today, additional latency is kept to a minimum to preserve the Quality-of-Service. As a result, it is possible to mount side-channel attacks using timing analysis. In this thesis we discuss the viability of these attacks, and demonstrate them by inferring Hidden Markov Models of protocols. These Hidden Markov Models can be used to both detect protocol use and infer information about protocol state. We create experiments that use Markov models to generate traffic and show that we can accurately reconstruct models under many circumstances. We analyze what occurs when timing delays have enough jitter that …

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A Discounted Cash Flow Method Of Valuation For Single Trees And Urban Forests, Kristin Heffelfinger May 2010

A Discounted Cash Flow Method Of Valuation For Single Trees And Urban Forests, Kristin Heffelfinger

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Urban foresters need a consistent method for valuing single trees with specific non-timber values. There are several accepted methods to accomplish this; comparison of results across the methods ensures consistency. Discounted cash flow analysis (DCF) is one of these methods, but many appraisers or others valuing urban tree are reluctant to use it because it requires complex calculations and assumptions. However, DCF has the advantage of accounting for the time value of money and certain intangible benefits presented by urban trees. Current models are adapted to specific locations and species; a general method for urban tree valuation has not been …

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Building Scientific Clouds: The Distributed, Peer-To-Peer Approach, Linton Vadakedathu May 2010

Building Scientific Clouds: The Distributed, Peer-To-Peer Approach, Linton Vadakedathu

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The Scientific community is constantly growing in size. The increase in personnel number and projects have resulted in the requirement of large amounts of storage, CPU power and other computing resources. It has also become necessary to acquire these resources in an affordable
manner that is sensitive to work loads. In this thesis, the author presents a novel approach that provides the communication platform that will support such large scale scientific projects. These resources could be difficult to acquire due to NATs, firewalls and other site-based restrictions and policies. Methods used to overcome these hurdles have been discussed in detail …

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Acceleration Of Spiking Neural Networks On Single-Gpu And Multi-Gpu Systems, Venkittaraman Vivek Pallipuram Krishnamani May 2010

Acceleration Of Spiking Neural Networks On Single-Gpu And Multi-Gpu Systems, Venkittaraman Vivek Pallipuram Krishnamani

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There has been a strong interest in modeling a mammalian brain in order to study the architectural and functional principles of the brain and offer tools to neuroscientists and medical researchers for related studies. Artificial Neural Networks (ANNs) are compute models that try to simulate the structure and/or the functional behavior of neurons and process information using the connectionist approach to computation. Hence, the ANNs are the viable options for such studies.
Of many classes of ANNs, Spiking Neuron Network models (SNNs) have been employed to simulate mammalian brain, capturing its functionality and inference capabilities. In this class of neuron …

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Sparse Representation For Detection Of Transients Using A Multi-Resolution Representation Of The Auto-Correlation Of Wavelets, Caroline Sieger May 2010

Sparse Representation For Detection Of Transients Using A Multi-Resolution Representation Of The Auto-Correlation Of Wavelets, Caroline Sieger

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This thesis seeks to detect damped sinusoidal transients, specifically capacitor switching transients, buried in noise and to answer the following questions: 1.) Can the transient s(t;q) be sparsely represented from s&delta(t) = s(t;q) + &epsilon(t) using sparsity methods, where &epsilon(t) is white Gaussian noise? 2.) Does computing the local auto-correlation of the signal around the transient improve detection? 3.) How does the auto-correlation shell representation compare to the wavelet representation? 4.) Which basis is ''best''? 5.) Which method and representation is best? This thesis explores detection schemes based on classical methods and newer sparsity methods. Classical methods considered include reconstruction …

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Sensitivity Constrained Pmu Placement Utilizing Multiple Methods, Zheng Zhao May 2010

Sensitivity Constrained Pmu Placement Utilizing Multiple Methods, Zheng Zhao

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Phasor Measurement Unit (PMU), which is based on the GPS technique, is able to provide power engineers with immediate and precise measurements. By utilizing PMUs, the reliability and stability in power system are expected to be improved. Conventionally, an optimal PMU placement is considered to use the least number of units to make the entire system completely observable. In this thesis, it is recommended to not only optimize the number of PMUs but also install the majority of PMUs on the most sensitive buses in a power system. Thus a bus sensitivity analysis based on Decoupled Power Flow method is …

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A Comparison Of Small Scale Laboratory Experiments With The Environmetnal Protection Agency Reccomended Dense Gas Dispersion Models: An Assessment Of The Validity Of Salt Bath Modeling Of Atmospheric Flows, Katie Betz May 2010

A Comparison Of Small Scale Laboratory Experiments With The Environmetnal Protection Agency Reccomended Dense Gas Dispersion Models: An Assessment Of The Validity Of Salt Bath Modeling Of Atmospheric Flows, Katie Betz

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Accurate dense gas dispersion modeling is important in a number of fields from modeling smoke movement in a room to the spreading of dense toxic gas releases such as resulted from the Chlorine spill in Graniteville, SC in 2005. To this end, a series of small scale laboratory experiments using instantaneous releases of a cylindrical, finite volume of dense salt water were performed. In the experiments, the horizontal spread of the dense liquid over a flat surface(i.e. gravity current front position over time) was measured.
The results of these small scale experiments were compared to two dense gas dispersion models …

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A Study Of Coastal Headwater Stream Hydrology: Bannockburn Plantation, Georgetown County, Sc, Drake Rogers May 2010

A Study Of Coastal Headwater Stream Hydrology: Bannockburn Plantation, Georgetown County, Sc, Drake Rogers

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Coastal headwater streams in undeveloped forested landscapes function as a natural storage and conveyance mechanism for rainfall and groundwater. Stream flows are often driven by groundwater table depth, while soil saturation with a high water table may drive rainfall response. Evapotranspiration also plays a significant role in groundwater levels and influences stream flows both seasonally and diurnally. The dynamics of coastal forested watersheds are complex, and water budgets of these low gradient headwater streams are difficult to quantify.
Understanding these hydrologic dynamics is critical to water resources protection and flood prevention in coastal landscapes, especially as forested areas are converted …

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The Steiner Linear Ordering Problem: Application To Resource-Constrained Scheduling Problems, Mariah Magagnotti May 2010

The Steiner Linear Ordering Problem: Application To Resource-Constrained Scheduling Problems, Mariah Magagnotti

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When examined through polyhedral study, the resource-constrained scheduling problems have always dealt with processes which have the same priority. With the Steiner Linear Ordering problem, we can address systems where the elements involved have different levels of priority, either high or low. This allows us greater flexibility in modeling different resource-constrained scheduling problems. In this paper, we address both the linear ordering problem and its application to scheduling problems, and provide a polyhedral study of the associated polytopes.

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Game-Street: Rhetoric And Critical Play For Business Ethics Instruction, Glen Southergill May 2010

Game-Street: Rhetoric And Critical Play For Business Ethics Instruction, Glen Southergill

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This thesis explores business ethics instruction as a rhetorical problem and discusses critical play as a means of learning. Artistotle's concept of phronesis, or practical wisdom, is used as a way of demonstrating the problematic nature of business ethics pedagogy theory and practice when viewed through a lens of social epistemic rhetorical theory. Rather than attempting to quantify business ethics, this work argues for a subversive paradigm achievable through critical play.

Game space is observed in two domains of ethical learning. I argue that the business ethics classroom space of Clemson University is a form of remediated non-space constrained by …

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Ie Tools In Construction - Small Tools Spreadsheet, Ronald Goodson May 2010

Ie Tools In Construction - Small Tools Spreadsheet, Ronald Goodson

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This document will explore the development and implementation of a spreadsheet tool that will provide for effective planning, procurement, and management of 'small tools' on a construction site - small tools are relatively inexpensive items that are usually handheld. The following five chapters cover the development of the spreadsheet. Both methodology and the calculation process are explored in detail and all facets of the spreadsheet are explained. A key component of the development process is that end users were involved in the entire development process to ensure the spreadsheet met their needs. In general, users input several criteria regarding work …

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Shrinkage Estimation In Partially Linear Models With Measurement Error, Yifang Li May 2010

Shrinkage Estimation In Partially Linear Models With Measurement Error, Yifang Li

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In practice, measurement error in the covariates is often encountered. Measurement error has several effects when using ordinary least squares for the regression problems. In this thesis, we introduce the basic idea of correcting the bias caused by different types of measurement error. We then focus on the variable selection for partially linear models when some of the covariates are measured with additive errors. The bias caused by the measurement error is corrected by subtracting a bias correction term in the squared loss function. Adaptive LASSO is used for the variable selection procedure. The rate of convergence and the asymptotic …

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Increased Accuracy And Efficiency In Finite Element Computations Of The Leray-Deconvolution Model Of Turbulence, Abigail Bowers May 2010

Increased Accuracy And Efficiency In Finite Element Computations Of The Leray-Deconvolution Model Of Turbulence, Abigail Bowers

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This thesis develops, analyzes and tests a finite element method for approximating solutions to the Leray–deconvolution regularization of the Navier–Stokes equations. The scheme combines three ideas in order to create an accurate and effective algorithm: the use of an incompressible filter, a linearization that decouples the velocity–pressure system from the filtering and deconvolution operations, and a stabilization that works well with the linearization. A rigorous and complete numerical analysis of the scheme is given, and numerical experiments are presented that show clear advantages of the scheme.

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The Relationship Between The Use Of Written Symbols In Preschoolers And Exposure And Use Of Art Media, Helen Prince May 2010

The Relationship Between The Use Of Written Symbols In Preschoolers And Exposure And Use Of Art Media, Helen Prince

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The Visual Arts are an important part of the daily life of an early childhood classroom. Through drawing, painting, and other expressive media, young children develop early representational skills. These skills are an important component of early literacy development. This paper documents an action research project that took place in a 4K classroom. The aim of the project was to understand why the children in this classroom did not voluntarily spend time writing and drawing in the arts center while also working on strategies for promoting the children's use of the arts center and representational experiences. This research provides support …

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Effect Of Refrigerated Vacuum Storage On The Shelf Life Of Comingled Broccoli, Cauliflower, And Carrots, Ashley Spokowski May 2010

Effect Of Refrigerated Vacuum Storage On The Shelf Life Of Comingled Broccoli, Cauliflower, And Carrots, Ashley Spokowski

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The objective of this research was to study the interaction of comingled vegetables (broccoli, cauliflower, and carrots) in a refrigerated 30% vacuum system at various temperatures for 15 days. The vegetables were trimmed, washed, and randomly separated into 200 gram lots. They were placed into vacuum chambers and sealed. Each chamber was labeled with a temperature, sampling day, and treatment identification (vacuum vs non-vacuum). Samples were stored refrigerated set at 3, 7, and 11¡C. Samples were evaluated at (0, 5, 10, and 15 days). Analytical testing included; microbial population, texture, color, and gas headspace composition. There was no evidence that …

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A Numerical Study Of Subgrid Artificial Viscosity Methods For The Navier-Stokes Equations, Keith Galvin May 2010

A Numerical Study Of Subgrid Artificial Viscosity Methods For The Navier-Stokes Equations, Keith Galvin

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This paper studies two artificial viscosity methods for approximating solutions to the Navier&ndashStokes Equations. Both methods that are introduced add stabilization, then remove it only on a coarse mesh. Both methods can be considered as conforming, mixed methods for 1) velocity and its gradient, and 2) velocity and vorticity. Herein we rigorously study the schemes both analytically and computationally, showing that both methods are unconditionally stable and optimally convergent. Numerical experiments show both methods provide improved results over the unstabilized Navier&ndashStokes Equations.

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Analysis Of Egg-Lay Dates Of Bald Eagles As A Potential Indicator Of Global Climate Change, Jennifer Garrison May 2010

Analysis Of Egg-Lay Dates Of Bald Eagles As A Potential Indicator Of Global Climate Change, Jennifer Garrison

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The effects of climate change on many wildlife species is a new area of research. Long&ndashterm data sets on raptor populations may hold the key to documenting these impacts from local to ecosystem scales. The Michigan bald eagle (Haliaeetus leucocephalus) population has been monitored continuously since 1961, and virtually all reproductive outcomes are known since 1963. The bald eagle population at Voyageurs National Park, Minnesota has been monitored continuously since 1973. Though these data sets are extensive, little is known about the effects of climate change on egg laying dates in sea eagles (Haliaeetus spp). Understanding these effects could ultimately …

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Performance Of Expanded Polymer Cushion Materials At Less Than One Inch In Thickness, Glen Potter May 2010

Performance Of Expanded Polymer Cushion Materials At Less Than One Inch In Thickness, Glen Potter

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The purpose of this work is to determine whether peak acceleration values can be predicted from existing cushion curves for polymeric materials with thicknesses less than one inch. The secondary purpose is to determine whether the stress energy method of cushion testing can be applied to polymeric foams with thicknesses less than one inch. Cushion curves were created from materials greater than one inch in thickness and from materials less than one inch in thickness. The curves were compared using three methods; linear regression, comparison of cushion curves by ASTM allowable difference between curves and comparison of predicted acceleration values …

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System Modeling And Power Management Strategy For A Series Hydraulic Hybrid Vehicle, Sisay Molla May 2010

System Modeling And Power Management Strategy For A Series Hydraulic Hybrid Vehicle, Sisay Molla

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A hydraulic hybrid vehicle draws propulsion power from an internal combustion engine as its prime mover and a gas-charged hydro-pneumatic accumulator as its energy buffer. The accumulator serves the purposes of storing regenerated braking energy and supplementing engine power as determined by an on-board power management strategy. In the configuration known as a series hydraulic hybrid powertrain, the engine is mechanically decoupled from the vehicle's wheels thereby offering excellent opportunities for maximizing energy efficiency and reducing pollutant emissions.
This thesis dealt with the development of a causally interconnected, non-linear, dynamic model of a series hydraulic hybrid powertrain featuring independently controllable …

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Compressive Sensing, Yue Mao May 2010

Compressive Sensing, Yue Mao

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Compressive sensing is a novel paradigm for acquiring signals and has a wide range of applications. The basic assumption is that one can recover a sparse or compressible signal from far fewer measurements than traditional methods. The difficulty lies in the construction of efficient recovery algorithms. In this thesis, we review two main approaches for solving the sparse recovery problem in compressive sensing: l1-minimization methods and greedy methods. Our contribution is that we look at compressive sensing from a different point of view by connecting it with sparse interpolation. We introduce a new algorithm for compressive sensing called generalized eigenvalues …

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Acceleration Of Biomolecular Simulations Using Fpga-Based Reconfigurable Computing, Ananth Nallamuthu May 2010

Acceleration Of Biomolecular Simulations Using Fpga-Based Reconfigurable Computing, Ananth Nallamuthu

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A paradigm shift is occurring in the way compute-intensive scientific applications are developed. Thanks to advancements in commercially viable hybrid architectures for High-Performance Computing (HPC), the focus has shifted from improving performance by merely scaling algorithms on von Neumann computing nodes to fully exploiting additional computational capabilities provided by accelerators such as FPGAs (Field Programmable Gate Arrays) and GPGPUs (General Purpose Graphical Processing Units).
Computational chemists use Molecular Dynamics (MD) simulations like LAMMPS (Large Scale Atomic Molecular Massively Parallel Systems) and NAMD (NAnoscale Molecular Dynamics) to simulate biomolecular behaviour such as protein folding and small molecule docking to proteins. MD …

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Development Of A Spatialy Explicit Habitat Patch Model (C-Pan) And Comparative Analysis Of Patch Modeling Techniques: The Crafting Of A New Tool For Conservation Planners, Ryan Perkl May 2010

Development Of A Spatialy Explicit Habitat Patch Model (C-Pan) And Comparative Analysis Of Patch Modeling Techniques: The Crafting Of A New Tool For Conservation Planners, Ryan Perkl

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ABSTRACT
Ecological theories including island biogeography, intermediate disturbance, metapopulation and metacommunity all suggest that habitat patches of larger size and those comprised of substantial configurations of interior or core habitat possess the greatest potential for long-term species viability. As a direct means of mitigating edge encroachment and fragmentation's other adverse effects, there is a growing consensus among conservation planners that assembling larger, more cohesive tracts with substantial core area is of ecological value in conservation planning. Larger and more cohesive patches are believed to sustain larger and more viable local populations, enhance overall biodiversity, incorporate a wider array of natural …

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Charleston History Through Architecture: Educating Students About Historic Preservation, Cultural Heritage, And Social History In Charleston, South Carolina, Katherine Leslie Stamps May 2010

Charleston History Through Architecture: Educating Students About Historic Preservation, Cultural Heritage, And Social History In Charleston, South Carolina, Katherine Leslie Stamps

Master of Science in Historic Preservation Terminal Projects

No abstract provided.

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Virtual Organization Clusters: Self-Provisioned Clouds On The Grid, Michael Murphy May 2010

Virtual Organization Clusters: Self-Provisioned Clouds On The Grid, Michael Murphy

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Virtual Organization Clusters (VOCs) provide a novel architecture for overlaying dedicated cluster systems on existing grid infrastructures. VOCs provide customized, homogeneous execution environments on a per-Virtual Organization basis, without the cost of physical cluster construction or the overhead of per-job containers. Administrative access and overlay network capabilities are granted to Virtual Organizations (VOs) that choose to implement VOC technology, while the system remains completely transparent to end users and non-participating VOs. Unlike alternative systems that require explicit leases, VOCs are autonomically self-provisioned according to configurable usage policies. As a grid computing architecture, VOCs are designed to be technology agnostic and …

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The Impact Of A Noise-Reducing Learning Accommodation Utilized By Students With Learning Disabilities During An Independent Reading Inventory, Gregory Smith May 2010

The Impact Of A Noise-Reducing Learning Accommodation Utilized By Students With Learning Disabilities During An Independent Reading Inventory, Gregory Smith

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The ill-effect of noise on human performance has been studied by researchers in the fields of cognitive psychology and education for almost a decade. The learning theory Cognitive Information Processing was applied to a new empirical study that builds upon past relevant research on (a) working memory and individuals with learning disabilities, and (b) auditory distraction and academic performance. Reading comprehension assessments were completed by students with learning disabilities while wearing and not wearing noise-reducing headphones. Findings indicate a positive relationship between the wearing of noise-reducing headphones and the results of the reading comprehension assessments for students with learning disabilities. …

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Investigation Of Remedial Education Course Scores As A Predictor Of Freshman-Level Course Performances, Larry Ulmer May 2010

Investigation Of Remedial Education Course Scores As A Predictor Of Freshman-Level Course Performances, Larry Ulmer

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This study sought to determine the relationship between the performance in remedial courses (English and math) and college-level course performances among students in a large university. This study investigated whether remedial education improves the achievement in freshman level collegiate courses. The study contributes to the literature on remedial education courses and placement testing, therefore offering possible enhancements and improvements to the improvement in remedial education.
The researcher selected the correlational research design because the study sought to explore relationships between remedial course scores and freshman-level course scores. The findings from this study showed remedial course performance was associated in a …

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Mapping Quantitative Trait Loci Associated With Chilling Requirement And Bloom Date In Peach, Shenghua Fan May 2010

Mapping Quantitative Trait Loci Associated With Chilling Requirement And Bloom Date In Peach, Shenghua Fan

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Chilling requirement (CR), together with heat requirement (HR), determines bloom date (BD), which impacts climatic distribution of genotypes of temperate tree species. The molecular basis of floral bud CR is poorly understood despite its importance to fruit tree adaptation and production. A peach F2 populations developed from two genotypes with contrasting CR values was used for QTL mapping for CR, HR and BD. Using the Contender × Fla.92-2c population, 20 QTLs with additive effects were identified for three traits including one major QTL for CR and two major QTLs for BD. Particularly, one genomic region of 2cM pleiotropic for the …

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Understanding The Biological And Environmental Implications Of Nanomaterials, Sijie Lin May 2010

Understanding The Biological And Environmental Implications Of Nanomaterials, Sijie Lin

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The last two decades have witnessed the discovery, development, and large-scale manufacturing of novel nanomaterials. While nanomaterials bring in exciting and extraordinary properties in all areas of materials, electronics, mechanics, and medicine, they also could generate potential adverse effects in biological systems and in the environment. The currently limited application of nanomaterials in biological and ecological systems results from the insufficient and often controversial data on describing the complex behaviors of nanomaterials in living systems. The purpose of this dissertation intends to fill such a knowledge void with methodologies from the disciplines of biophysics, biology, and materials science and engineering. …

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The Effects Of Participating In A Service-Learning Experience On The Development Of Self-Efficacy For Self-Regulated Learning Of Third Graders In An Urban Elementary School In Southeastern United States, Nancy Arrington May 2010

The Effects Of Participating In A Service-Learning Experience On The Development Of Self-Efficacy For Self-Regulated Learning Of Third Graders In An Urban Elementary School In Southeastern United States, Nancy Arrington

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Abstract
The teacher-researcher employed multiple methods in this action research to analyze the effects of service-learning on the self-efficacy for self-regulated learning of her third-grade music students as they participated in an intergenerational project--sharing music and writing with residents in a local nursing home.
Quantitative data were analyzed using independent samples t-tests and regression analyses. The quantitative data included the results from the Children's Self-Efficacy Scale (Bandura, 2006) and progress rating scales administered by the teacher-researcher. Emergent coding of qualitative data revealed recurring themes derived from the following sources: observation and field notes, students' reflective journals, student and teacher interviews, …

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