Digital Commons Network^™

From Double Lie Groupoids To Local Lie 2-Groupoids, Rajan Amit Mehta, Xiang Tang

Mathematics Sciences: Faculty Publications

We apply the bar construction to the nerve of a double Lie groupoid to obtain a local Lie 2-groupoid. As an application, we recover Haefliger's fundamental groupoid from the fundamental double groupoid of a Lie groupoid. In the case of a symplectic double groupoid, we study the induced closed 2-form on the associated local Lie 2-groupoid, which leads us to propose a definition of a symplectic 2-groupoid.

Broader Questions And A Bigger Toolbox:A Problem-Centered And Student-Centered Approach To Teaching Pluralist Economics, Julie A. Nelson

Economics Faculty Publication Series

This essay discusses a "broader questions and bigger toolbox" approach to teaching pluralist economics. This approach has three central characteristics. First, economics is defined so as to encompass a broad set of (provisioning) concerns. Second, emphasis is placed on contemporary real-world issues, institutions, and current events, rather than on debates in the history of economic thought. Third, a variety of concepts and theories are introduced, all of which are treated as partial and fallible--useful in some (perhaps very limited) situations while not so useful in others. Possible reasons an instructor might want to adopt this approach, and examples of use …

Prototype Automated Flow-Through Sensor For Measuring Waterborne Microbial Concentrations Using Bulk Fluorescence, Susan M. Savill

Graduate Masters Theses

Timely and inexpensive monitoring of microbial ecology in the world's water supplies is crucial to the study of environmental and human impact on water quality and the prevention of disease outbreaks. Current technology is lacking in its ability to accurately measure and predict the presence of possible disease pathogens in a timely and cost effective manner. This paper describes the construction and initial testing of an automated prototype water sensor intended to detect fluctuations in microbial density in real-time by using bulk fluorescence of SYBR Gold stained bacteria. The sensor is comprised of off-the-shelf hardware and an in-house designed and …

Astronomical Spectroscopy At The Cal Poly Observatory, Christopher James Almich

Physics

Embarking on the first ever astronomical spectroscopy project at the Cal Poly Observatory, I have tested the capabilities of our equipment. Our spectrograph, in conjunction with a telescope and CCD camera, is capable of making fairly precise measurements of absorption and emission lines with sub-nanometer precision. In my research I obtained a spectrum of Jupiter and was able to confidently identify a number of Fraunhofer solar absorption lines.

A Comparison Of The Performance Of Neural Q-Learning And Soar-Rl On A Derivative Of The Block Design (Bd)/Block Design Multiple Choice (Bdmc) Subtests On The Wisc-Iv Intelligence Test, Charreau Bell

All Theses

Teaching an autonomous agent to perform tasks that are simple to humans can be complex, especially when the task requires successive steps, has a low likelihood of successful completion with a brute force approach, and when the solution space is too large or too complex to be explicitly encoded. Reinforcement learning algorithms are particularly suited to such situations, and are based on rewards that help the agent to find the optimal action to execute given a certain state. The task investigated in this thesis is a modified form of the Block Design (BD) and Block Design Multiple Choice (BDMC) subtests, …

An Early Warning Monitoring System For Cnc Spindle Bearing Failure, Andrew Werner

All Theses

Equipment employed in a manufacturing environment must be able to operate as long as possible having as little downtime as possible. Therefore, maintenance is crucial in order to allow for the equipment to perform its designated tasks without failure, especially on critical systems. In a CNC machine, if the spindle fails, the machine is useless. Having the ability to detect spindle degradation to the point where a replacement spindle installation can be planned, via condition monitoring, is invaluable to a manufacturer who utilizes these types of machines.
An early warning monitoring system for CNC spindle bearing failure has been developed …

On Gorenstein Projective And Gorenstein Flat Modules, Chasen Grady Smith

College of Graduate Studies: Theses & Dissertations

Purpose: H. Holm's metatheorem states, "Every result in classical homological algebra has a counterpart in Gorenstein homological algebra". We support this statement by showing over commutative Noetherian rings of finite Krull dimension, every Gorenstein at module has finite Gorenstein projective dimension. This statement is the Gorenstein counterpart of a famous theorem of Gruson, Jensen, and Raynaud. Using this result we prove that over such rings, a module M having finite Gorenstein at dimension is equivalent to M having finite Gorenstein projective dimension.

The Examination Of Real-Life Implementations Of Critical Elements In A Professional Learning Community For High-Performing Middle Schools And Low-Performing Middle Schools, Damita Griffin Bynes

College of Graduate Studies: Theses & Dissertations

In a September 2 Education Week Commentary, Kahlenberg (2009) identified 5,000 schools across the nation categorized as failing or low-performing schools. A significant amount of attention and resources are dedicated to transform low-performing schools to high-performing schools promoting student achievement. Because of the increasing demand that low-performing schools be turned around, Georgia schools that do not make Adequate Yearly Progress (AYP) two consecutive years for the same indicator are placed in Needs Improvement (NI) status and face escalating consequences from the Georgia Department of Education (GaDOE). In the midst of all of the demands to meet local and state requirements, …

Overcharge But Don't Overestimate: Calculating Damages For Antitrust Injuries In Two-Sided Markets, Daniel M. Tracer

Cardozo Law Review

No abstract provided.

Modeling And Analysis Of Multiple Engine Aircraft Configurations For Fault Tolerant Control, Frederick M. Beamer

Graduate Theses, Dissertations, and Problem Reports (ETD)

A formal framework is presented that allows for the analysis of the potential for using engine thrust control for aircraft actuator failure accommodation. Three sets of parameters have been identified as critical: number of engines and their position, engine thrust and throttle dynamics, and type and severity of the actuator failure. A mathematical model was developed that allows for the determination of the values of some of the parameters when the others are imposed such as determining the thrust control authority when the engine locations and Euler angles are known. Additionally, the engine locations can be determined when the thrust …

Utilization Of Igs Information For Improved Real-Time Gps Positioning, Francis James Barchesky

Graduate Theses, Dissertations, and Problem Reports (ETD)

The estimation of a precise user's position is a difficult and complex problem. In addition, the use of geodetic grade position instruments is often not possible for Small Unmanned Aerial Vehicle (SUAV) systems. However, the availability of the global navigation satellite system (GNSS) and International GNSS Service (IGS) predicted product data allows an attempt to increase the precision of a navigation algorithm, which is the aim in this thesis.;The utilization of this information within an algorithm work environment is a complex problem, requiring the development of multiple tools in order to use and access the IGS raw and product data. …

Educators' Perceptions Of Preparation And Practice For Teaching Algebra I To Students With Mathematical Learning Disabilities, Sararose Devore Lynch

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this mixed methods study was to describe the current state of Algebra I instruction for students with mathematical learning disabilities (MLD) in West Virginia and teachers. preparation for this practice, as perceived by teachers. Further, this study examined the extent teachers. instructional practices for teaching students with MLD Algebra I aligned with best practices recommended in the research literature. Fifty-seven educators from West Virginia who taught Algebra I to students with Mathematical Learning Disabilities completed the Survey of Instructional Practices Implemented by Algebra I General and Special Educators When Educating Students with a MLD. In addition, a …

Iris Recognition: Robust Processing, Synthesis, Performance Evaluation And Applications, Jinyu Zuo

Graduate Theses, Dissertations, and Problem Reports (ETD)

The popularity of iris biometric has grown considerably over the past few years. It has resulted in the development of a large number of new iris processing and encoding algorithms. In this dissertation, we will discuss the following aspects of the iris recognition problem: iris image acquisition, iris quality, iris segmentation, iris encoding, performance enhancement and two novel applications.;The specific claimed novelties of this dissertation include: (1) a method to generate a large scale realistic database of iris images; (2) a crosspectral iris matching method for comparison of images in color range against images in Near-Infrared (NIR) range; (3) a …

Determine The Optimal Policy For The Function Of Pareto Distribution Reliability Estimated Using Dynamic Programming, Sarmad Alwan Saleh, Samera Khaleel Ibraheem

Journal of Economics and Administrative Sciences

The goal (purpose) from using development technology that require mathematical procedure related with high Quality & sufficiency of solving complex problem called Dynamic Programming with in recursive method (forward & backward) through finding series of associated decisions for reliability function of Pareto distribution estimator by using two approach Maximum likelihood & moment .to conclude optimal policy

Finitely Presented Modules Over The Steenrod Algebra In Sage, Michael J. Catanzaro

Wayne State University Theses

No abstract provided.

Interacting Stochastic Processes: From Viciousness To Caging To Force Chains, Shiliyang Xu

Physics - Dissertations

This thesis documents a quest to develop and study several novel interacting stochastic processes. As for the first example, we generalize a system of vicious random walkers in which the only interaction between any two random walkers is that when they intersect, both walkers are annihilated. We define a system of N vicious accelerating walkers with each walker undergoing random acceleration and compute the survival probability distribution for this system. We also define and study a system of N vicious Levy flights in which any two Levy flights crossing one another annihilate each other. The average mean-squared displacement of a …

The Effect Of Physical Activity On The Insulin Response To Frequent Meals, Michael E. Holmstrup

Exercise Science - Dissertations

Long, uninterrupted bouts of sedentary behavior are thought to negatively influence insulin sensitivity, and may impact metabolic function regardless of adherence to general physical activity guidelines. The purpose of this study was to determine the combined effect of physical activity (1 h continuous exercise v. intermittent exercise throughout the day) and meal consumption on glucose excursions, insulin secretion, and appetite markers in obese individuals with prediabetes. Methods: Eleven healthy, obese subjects (>30 kg/m2) with prediabetes underwent 3, 12 h study days including sedentary behavior (SED), exercise (EX; 1h morning exercise, 60-65% VO2 max), and physical activity (PA; 12 hourly, …

Thomas Hobbes' Response To The Fool: Justice And Magnanimity, Andrew James Corsa

Philosophy - Dissertations

I focus on Thomas Hobbes' response to the moral skeptic - the Fool - who claims it is sometimes reasonable to break valid covenants (contracts). The Fool maintains that, in some circumstances, violating a covenant will be in a person's best self-interest, and it will be reasonable to violate when it is. I interpret Hobbes to respond that it will never be reasonable for anyone to break a valid covenant, even in the state of nature (prior to society). In fact, everyone is obliged to keep all of his valid covenants, and it is always both reasonable and in each …

Dynamic Botanical Filtration System For Indoor Air Purification, Zhiqiang Wang

Mechanical and Aerospace Engineering - Dissertations

A dynamic botanical air filtration (DBAF) system was developed, tested and modeled for indoor air purification. The DBAF system consisted of an activated-carbon/hydroculture-based root bed for potted-plant, a fan for driving air through the root bed for purification, and an irrigation system for maintaining proper moisture content in the root bed. Results from test conducted in a full-scale open office space indicated that the filtration system had ability to supply clean air equivalent to 80% of required outdoor air supply for the space. The DBAF was effective for removing both formaldehyde and toluene at 5 to 32% volumetric water content …

Design And Implementation Of An Open Framework For Ubiquitous Carbon Footprint Calculator Applications, Farzana Rahman, Casey O'Brien, Sheikh Iqbal Ahamed, He Zhang, Lin Liu

Mathematics, Statistics and Computer Science Faculty Research and Publications

As climate change is becoming an important global issue, more and more people are beginning to pay attention to reducing greenhouse gas emissions. To measure personal or household carbon dioxide emission, there are already plenty of carbon footprint calculators available on the web. Most of these calculators use quantitative models to estimate carbon emission caused by a user's activities. Although these calculators can promote public awareness regarding carbon emission due to an individual's behavior, there are concerns about the consistency and transparency of these existing CO₂ calculators. Apart from a small group of smart phone based carbon footprint calculator …

Cross Media Hyperlinking For Search Topic Browsing, Song Tan, Chong-Wah Ngo, Hung-Khoon Tan, Lei Pang

Research Collection School Of Computing and Information Systems

With the rapid growth of social media, there are plenty of information sources freely available online for use. Nevertheless, how to synchronize and leverage these diverse forms of information for multimedia applications remains a problem yet to be seriously studied. This paper investigates the synchronization of multiple media content in the physical form of hyperlinking them. The ultimate goal is to develop browsing systems that author search results with rich media information mined from various knowledge sources. The authoring enables the vivid visualization and exploration of different information landscapes inherent in search results. Several key techniques are studied in this …

Prediction Models For Estimation Of Soil Moisture Content, Swathi Gorthi

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Center for Self-Organizing Intelligent Systems (CSOIS) has been successful in developing personal remote sensing systems. These systems can be further enhanced to monitor important resources of earth such as soil moisture content. Soil moisture is the major component of the soil in relation to plant growth. Soil water dissolves salts and makes up the soil solution, which is important as medium for supply of nutrients to growing plants.

Usually, measuring such physical quantities would include using derived formulas that mathematically describe the relationships between the parameters involved. With the advancements in computer modeling, other methods such as empirical modeling …

Temporal Pier Scour Evolution Under Stepped Hydrographs, Mark Schillinger

All Theses

The present study was aimed at measuring the scour hole profile at bridge piers under clear water scour. Scour tests were performed under both steady state flow and under stepped hydrographs. Multiple smaller flood events were run to determine how flood history affects scour hole development. Various equilibrium scour depth equations and proposed temporal scour models were compared. The similarity of the scour hole profiles with time and flow history were evaluated.
Experiments were conducted in a 14.8 m long, 1.19 m wide, 1.22 m deep rectangular flume with a model bridge pier. A uniform sediment bed (d₅₀= …

A Web-Integrated Environment For Component-Based Software Reasoning, Charles Cook

All Theses

This thesis presents the Web IDE, a web-integrated environment for component-based software reasoning. The Web IDE is specifically tailored to emphasize the relationships among various components in component-based software engineering (CBSE) and to facilitate reasoning. It allows students to use RESOLVE, a component-based, integrated specification and programming language, to build components and systems, providing real-time feedback that can be used to reason about the correctness of their component implementations. Real-time interaction and relationship focused component presentation reinforces CBSE and reasoning principles in a way not possible with traditional programming exercises and file management systems.
The Web IDE has gone through …

Robust Design And Monitoring Tools For Sustainable And Resilient Structural Design And Infrastructure Management, Sarah Dalton

All Theses

Structural systems are subject to inherent uncertainties due to the variability in many hard-to-control `noise factors' that include but are not limited to external loads, material properties, and construction workmanship. Two design methodologies have been widely accepted in the practicing engineering realm to manage the variability associated with operational structures: Allowable Stress Design (ASD) and Load and Resistance Factor Design (LRFD). These traditional approaches explicitly recognize the presence of uncertainty; however, they do not take robustness against this uncertainty into consideration. Overlooking this robustness against uncertainty in the structural design process has two drawbacks. First, the design may not satisfy …

Fabrication And Characterization Of Multi-Functional Non-Spherical Particles Via Mechanical Deformation, Venkata Shilpa Varahagiri

All Theses

Nanoparticles bridge the gap between bulk materials and molecules. They possess exciting but contrasting mechanical, chemical, magnetic and optical properties when compared to their bulk counterparts due to their shape and size. When the size of noble metal nanoparticles is reduced to less than the wavelength of light, the particles intensely absorb and scatter light at wavelengths that depend on the particle size, shape, and local dielectric environment due to Localized Surface Plasmon Resonance (LSPR) modes. Recently, plasmonic particles have been used in a wide variety of sensor and optical device applications including immunoassays and surface enhanced Raman spectroscopy substrates. …

Laminar Flame Speed Estimation From Experimental Data Using A Quasi-Dimensional Turbulent Flame Entrainment Combustion Simulation For Spark Ignition Engines, Akash Desai

All Theses

The goal of this research is to develop a thermodynamic simulation of spark-ignition engine combustion that uses a predictive burn-rate model. Previously done thermodynamic engine simulations in MATLAB are based on a specified burn rate model. Also, the effect of turbulence parameters on the rate of mass burn up is not considered. A predictive burn rate model is necessary to study the effect of different fuels on spark ignition engine combustion. The effect of laminar flame speed and turbulent intensity on combustion is difficult to assess experimental due to the difficulty in the measurement of these two variables. Thus, the …

A Comparison And Evaluation Of Three Different Pose Estimation Algorithms In Detecting Low Texture Manufactured Objects, Robert Kriener

All Theses

This thesis examines the problem of pose estimation, which is the problem of determining the pose of an object in some coordinate system. Pose refers to the object's position and orientation in the coordinate system. In particular, this thesis examines pose estimation techniques using either monocular or binocular vision systems.
Generally, when trying to find the pose of an object the objective is to generate a set of matching features, which may be points or lines, between a model of the object and the current image of the object. These matches can then be used to determine the pose of …

Quantifying Damages For Lucrum Cessans In Tort: A Fusion Of Sources Creating A Unique Legal Structure For Malta, Fiona Cilia

Journal of Civil Law Studies

No abstract provided.

Design And Implementation Of Metamaterial Based Strain Sensor Using Aperture Coupled Antenna, Michael Brandon Buscher

Graduate Theses and Dissertations

Strain sensors are used to convert the physical measured quantity of strain into an electrical signal suitable for processing by electronic equipment. Traditional strain sensors are comprised of a thin flexible film with a resistive pattern traced on the surface. As the sensor is deformed, the electrical resistance changes proportionally, giving a direct measure of the strain incurred. Metamaterials, particularly split ring resonators (SRR), lend themselves as a valuable tool for sensing applications due to their highly resonant nature and their very narrow bandwidth (high Q-factor). Due to very high field localization effects, they are extremely sensitive to both the …