Digital Commons Network^™

The Declining Natural Fish Stock: A Proposed Solution To Public Fear And Perceptions Of Genetically Modified Fish, Morgan Beltz

CMC Senior Theses

The global fish population is declining. Aquaculture production is saturated and the global fish stock is operating at an unsustainable level. Genetically modified (GM) fish is a potential solution to relieve the natural fish stock, if the FDA grants the approval. The global fish population is harmed by environmental conditions and the inability for fish to adapt to changing conditions and human interactions. Genetic modification is a growing technology that has the ability to alleviate the fishing industry by modifying fish to grow faster, be disease tolerant, eat plant-based food, and be more nutritious. However, the approval process has been …

Simultaneity Bias In Campaign Spending Games, Chloe Whang

CMC Senior Theses

In this paper, I replicate Erikson and Palfrey (2000) who propose that the simultaneity problem in measuring the effects of candidate spending can be resolved by restricting the sample to close elections. Vote-on-spending effects, which vary with the expected closeness of the election outcome in a systematic way, determine the extent of simultaneity bias. The simultaneity bias becomes progressively more severe as the anticipated vote margin decreases, plaguing the estimates of spending-on-vote effects on the full sample. In the range of a 50-50 expected vote, however, the vote-on-spending effects approach zero. Thus, by restricting the sample to extremely close races, …

State Level Earned Income Tax Credit’S Effects On Race And Age: An Effective Poverty Reduction Policy, Anthony J. Barone

CMC Senior Theses

In this paper, I analyze the effectiveness of state level Earned Income Tax Credit programs on improving of poverty levels. I conducted this analysis for the years 1991 through 2011 using a panel data model with fixed effects. The main independent variables of interest were the state and federal EITC rates, minimum wage, gross state product, population, and unemployment all by state. I determined increases to the state EITC rates provided only a slight decrease to both the overall white below-poverty population and the corresponding white childhood population under 18, while both the overall and the under-18 black population for …

Life And Death: Spiritual Philosophy In Anna Karenina, Jillian Avalon

CMC Senior Theses

This paper examines the structure, title, epigraph, and spiritual philosophy of Leo Tolstoy’s great novel, Anna Karenina. The intricate structure of the novel can leave more questions than it answers, and as the novel was written at such a critical, complex time of Tolstoy’s life, the ideas the characters struggle with in Anna Karenina are of both daily and cosmic importance. Considering influences and criticism of the novel, the method of Tolstoy’s vision of living well as shown in Anna Karenina leads to a very specific and intricate spiritual philosophy. It is also found that the novel’s structure and …

The Effect Of Organized Sports On Academic Achievement And Youth Development, Nicole Franklin

CMC Senior Theses

This thesis explores the relationship between sports, academics, and youth development, in 5^th- 9^th grade boys and girls from low-income families. This exploration includes an analysis of a non-profit organization called “Rainier Athletes.” This program underwrites the cost of organized sports for low-income children with the belief that sports help empower students so that they make positive choices inside the classroom and in the future. Rainier Athletes uses a token economy design in the classroom where students earn points by fulfilling academic expectations and displaying positive behavior.

Researchers concluded that sports participation had a beneficial effect on …

Fundamental Limits Of Detection In The Near And Mid Infrared, Nathan Lenssen

CMC Senior Theses

The construction of the James Webb Space Telescope has brought attention to infrared astronomy and cosmology. The potential information about our universe to be gained by this mission and future infrared telescopes is staggering, but infrared observation faces many obstacles. These telescopes face large amounts of noise by many phenomena, from emission off of the mirrors to the cosmic infrared background. Infrared telescopes need to be designed in such a way that noise is minimized to achieve sufficient signal to noise ratio on high redshift objects. We will investigate current and planned space and ground based telescopes, model the noise …

An Investigation On How Operational Wind Turbines Are Used In Secondary Classrooms, James Smith

Dissertations and Theses @ UNI

Through a review of literature, it was found that many schools in the United States are installing operational wind turbines, but it was unclear how teachers were using them in their science, technology, engineering and mathematics (STEM) classrooms. In order to identify how these operational wind turbines were being used and to create a list of expectations for schools with operational wind turbines, this exploratory study surveyed STEM teachers from all across the United States. A stratified random sample was created using a U.S. Department of Energy database of schools with operational wind turbines. Administrators from the selected schools identified …

A Review Of Pharmaceuticals And Endocrine-Disrupting Compounds: Sources, Effects, Removal, And Detections, Jimoh O. Tijani, Ojo O. Fatoba, Leslie F. Petrik

Mining Engineering Faculty Research & Creative Works

There are growing concerns about the increasing trends of emerging micropollutants in the environment due to their potential negative impacts on natural ecosystems and humans. This has attracted attention from both governmental and non-governmental organizations worldwide. Pharmaceuticals, personal care products, and endocrine disruptors are continuously being released consciously or unconsciously into water sources due to poor regulatory frameworks especially in the developing countries. The effects of these contaminants are poorly known. They are not easily biodegradable and have become an environmental nuisance and public health issue. This has heightened the risk of exposure to their deleterious effects in such countries …

Effect Of Thermal Annealing And Carbon Implantation On The Functional Properties Of Nanocomposite Tisin Coatings On Steel, Mohammad Shoeb Ahmed

Theses: Doctorates and Masters

This PhD research contributes to the part of advanced materials technology. The machining industry currently faces tremendous pressures with the need for durable cutting tools suitable for eco-friendly high speed machining operations becoming acute. In this thesis innovative design and synthesis strategies are explored to tailor the properties of nanocomposite coatings. Advanced characterisation techniques are applied to identify the mechanisms that control the mechanical, tribological, and corrosion behaviours of these coatings. Cutting tools protected by these coatings are anticipated to exhibit a unique combination of superior toughness and greater resistance to wear and corrosion, providing significant economic and environmental benefits. …

Characterising The Deformation Behaviour Of Human Tooth Enamel At The Microscale, Simona O'Brien

Theses: Doctorates and Masters

Enamel plays an important role in tooth function. Optimal combinations of composition and structure endow enamel with unique mechanical properties that remain largely unexplored. Specifically, more detailed understanding of the loadbearing ability of enamel is needed to mimic it synthetically and to design next generation biocomposite materials. This research investigates the variables that influence deformation behaviour of tooth enamel in relation to its hierarchical structure. Initially, a new method was developed for preparing flat, finely polished tooth samples that were maintained in their normal hydrated state for nanoindentation testing. In contrast to conventional methods, which commonly utilise either inappropriate or …

An Investigation Into The Volatility And Cointegration Of Emerging European Stock Markets, Anna Golab

Theses: Doctorates and Masters

This dissertation examines the interaction between European Emerging markets including cointegration, volatility, correlation and spillover effects. This study is also concerned with the process of the enlargement of the European Union and how this affects the emerging markets of newcomers. The twelve emerging markets studied are Bulgaria, the Czech Republic, Cyprus, Estonia, Hungry, Latvia, Lithuania, Malta, Poland, Romania, Slovakia and Slovenia, which are all progressing very rapidly in their reforms and domestic economic stability.

The majority of prior studies on stock market comovements and integration have concentrated on mature developed markets or the advanced emerging markets of the Czech Republic, …

Improving Classroom Discourse In Inquiry-Based Primary Science Education, Prudence Smith

Theses: Doctorates and Masters

Teachers‟ capacity to use classroom discourse to deepen student learning through sustained conversation is considered crucial to increasing students‟ intellectual development. Learners actively construct knowledge and develop understandings from their shared experiences and via interaction with others (Driver, Asoko, Leach, Mortimer & Scott, 1994). However, talk that fosters students‟ capacity to reason is lacking in many classrooms (Alexander, 2006) and, what is more, teachers tend to control the discourse by asking a predominance of closed questions and using a question-answer recitation script which limits the exploration of students‟ ideas (Nystrand, Gamoran, Kachy, & Prendergast, 1997). The purpose of this study …

Surface Plasmons For Enhanced Metal-Semiconductor-Metal Photodetectors, Ayman A. Karar

Theses: Doctorates and Masters

Surface Plasmon Polaritons (SPPs) are quantized charge density oscillations that occur when a photon couples to the free electron gas of the metal at the interface between a metal and a dielectric. The extraordinary properties of SPP allow for sub-diffraction limit waveguiding and localized field enhancement. The emerging field of surface plasmonics has applied SPP coupling to a number of new and interesting applications, such as: Surface Enhanced Raman Spectroscopy (SERS), super lenses, nano-scale optical circuits, optical filters and SPP enhanced photodetectors. In the past decade, there have been several experimental and theoretical research and development activities which reported on …

Environmental Film Festivals: Beginning Explorations At The Intersections Of Film Festival Studies And Ecocritical Studies, Salma Monani

Environmental Studies Faculty Publications

Drawing from the burgeoning field of film festival studies and its engagement with public sphere theory, I examine environmental film festivals to suggest that their festival terrain is bounded by three end-member festival types, that of the official public sphere, the alternative public sphere, and the corporate or trade-show sphere. Few environmental festivals fall neatly into a single end-member category. Analyzing how they construct their identities suggests the complex ways in which these festivals work to negotiate their presence in a heterogeneous environmental and media landscape and makes room for continued attention to these unique sites of ecocinema engagement.

Modules And Dialects As Objects In Grace, Michael Homer, James Noble, Kim B. Bruce, Andrew P. Black

Computer Science Faculty Publications and Presentations

Grace is a gradually typed, object-oriented language for use in education; consonant with that use, we have tried to keep Grace as simple and straightforward as possible. Grace needs a module system for several reasons: to teach students about modular program design, to organise large programs, especially its self-hosted implementation, to provide access to resources defined in other languages, and to support different “dialects”—language subsets, or domain specific languages, for particular parts of the curriculum. Grace already has several organising constructs; this paper describes how Grace uses two of them, objects and lexical scope, to provide modules and dialects.

The Grace Programming Language Draft Specification Version 0.3.1261, Andrew P. Black, Kim B. Bruce, James Noble

Computer Science Faculty Publications and Presentations

This is a specification of the Grace Programming Language. This specification is notably incomplete, and everything is subject to change.

On The Role Of Shape Prototypes In Hierarchical Models Of Vision, Michael David Thomure, Melanie Mitchell, Garrett T. Kenyon

Computer Science Faculty Publications and Presentations

We investigate the role of learned shape-prototypes in an influential family of hierarchical neural-network models of vision. Central to these networks’ design is a dictionary of learned shapes, which are meant to respond to discriminative visual patterns in the input. While higher-level features based on such learned prototypes have been cited as key for viewpointinvariant object-recognition in these models [1], [2], we show that high performance on invariant object-recognition tasks can be obtained by using a simple set of unlearned, “shape-free” features. This behavior is robust to the size of the network. These results call into question the roles of …

The Problem Of Semantics In The Metadata Mess, Veronika Margaret Megler, David Maier

Computer Science Faculty Publications and Presentations

This presentation addresses problems related to the volume of available scientific data, and its accessibility or inaccessibility to researchers who seek it. Topics addressed include metadata and reducing semantic diversity, especially as they refer to geospatial and other architectures

Taming The Metadata Mess, Veronika Margaret Megler

Computer Science Faculty Publications and Presentations

The rapid growth of scientific data shows no sign of abating. This growth has led to a new problem: with so much scientific data at hand, stored in thousands of datasets, how can scientists find the datasets most relevant to their research interests? We have addressed this problem by adapting Information Retrieval techniques, developed for searching text documents, into the world of (primarily numeric) scientific data. We propose an approach that uses a blend of automated and “semi-curated” methods to extract metadata from large archives of scientific data, then evaluates ranked searches over this metadata. We describe a challenge identified …

Interpreting Individual Classifications Of Hierarchical Networks, Will Landecker, Michael David Thomure, Luis M.A. Bettencourt, Melanie Mitchell, Garrett T. Kenyon, Steven P. Brumby

Computer Science Faculty Publications and Presentations

Hierarchical networks are known to achieve high classification accuracy on difficult machine-learning tasks. For many applications, a clear explanation of why the data was classified a certain way is just as important as the classification itself. However, the complexity of hierarchical networks makes them ill-suited for existing explanation methods. We propose a new method, contribution propagation, that gives per-instance explanations of a trained network's classifications. We give theoretical foundations for the proposed method, and evaluate its correctness empirically. Finally, we use the resulting explanations to reveal unexpected behavior of networks that achieve high accuracy on visual object-recognition tasks using well-known …

Nonnegativity Of Exact And Numerical Solutions Of Some Chemotactic Models, Patrick De Leenheer, Jay Gopalakrishnan, Erica Zuhr

Mathematics and Statistics Faculty Publications and Presentations

We investigate nonnegativity of exact and numerical solutions to a generalized Keller–Segel model. This model includes the so-called “minimal” Keller–Segel model, but can cover more general chemistry. We use maximum principles and invariant sets to prove that all components of the solution of the generalized model are nonnegative. We then derive numerical methods, using finite element techniques, for the generalized Keller–Segel model. Adapting the ideas in our proof of nonnegativity of exact solutions to the discrete setting, we are able to show nonnegativity of discrete solutions from the numerical methods under certain standard assumptions. One of the numerical methods is …

Comment On "Density And Physical Current Density Functional Theory", Xiao-Yin Pan, Viraht Sahni

Publications and Research

In this letter to the editor, the authors comment on an earlier article they had published, "Density and Physical Current Density Functional Theory" (Pan, X.-Y. and Sahni, V. (2010), Density and physical current density functional theory. Int. J. Quantum Chem., 110: 2833–2843. doi: 10.1002/qua.22862).

Online Learning In A Chemical Perceptron, Peter Banda, Christof Teuscher, Matthew R. Lakin

Computer Science Faculty Publications and Presentations

Autonomous learning implemented purely by means of a synthetic chemical system has not been previously realized. Learning promotes reusability and minimizes the system design to simple input-output specification. In this article we introduce a chemical perceptron, the first full-featured implementation of a perceptron in an artificial (simulated) chemistry. A perceptron is the simplest system capable of learning, inspired by the functioning of a biological neuron. Our artificial chemistry is deterministic and discrete-time, and follows Michaelis-Menten kinetics. We present two models, the weight-loop perceptron and the weight-race perceptron, which represent two possible strategies for a chemical implementation of linear integration and …

Using Shared Leadership To Achieve School Improvement Goals: A Qualitative Study Of One High School's Journey, Leigh Putman

Doctoral Dissertations and Projects

This qualitative phenomenological study examined the impact of shared leadership committees on school improvement efforts. The research identified which leadership factors lead to successful shared leadership committees and which supports and structures were needed for the committees to be meaningful in regards to school improvement. Certified staff who had been a part of the shared leadership committees at one high school in a suburb of Atlanta, Georgia took part in the study. The participants were divided according to the committee on which they served and two were randomly selected two from each committee for participation in the study. All study …

Rethinking Discipleship In The Area Of High School Ministry: Key Strategies For Transforming Urban Youth, Michael Rackley

Doctoral Dissertations and Projects

According to a Barna Research Group study titled "Third Millennium Teens" 60% of young people will leave the church permanently or for an extended period. Decreasing the number of urban youth ages 14-18 from defecting from the church and to increase retention of church dropouts using Twenty-First Century transformational strategies is the goal of this project. Having served as a youth pastor the writer will analyze key strategies that will benefit high school ministry by raising the bar on expectations and by building future leaders in the church.

This project will include an anonymous survey of 125 participants aged 18-24 …

A Comparison Of Georgia Criterion Referenced Competency Test Math Scores Between At-Risk Fifth Grade Students Receiving Computer Based Math Instruction And At-Risk Students Not Receiving Computer Based Math Instruction, Katherine Arnold

Doctoral Dissertations and Projects

This causal comparative research study compared the mean score differences from two groups of fifth grade students. Both groups were identified at-risk, based on a curriculum based math measure and their 4th grade performance on the state assessment, for failure to meet math standards on the state assessment. The curriculum-based measure in this study was the 2011-12 AIMSweb Mathematic Concepts and Applications (M-CAP). Mathematics achievement was measured by scores on the 2012 math subtest of the Georgia Criterion Referenced Competency Test (CRCT). Each group received classroom instruction using Learning Focused Schools (LFS) math strategies. The treatment group received additional computer …

Simulation Studying Effects Of Multiple Primary Aberrations On Donut-Shaped Gaussian Beam, Chen Zhang, K. Wang, J. Bai, Y. Liu, Guiren Wang

Faculty Publications

In this paper, we demonstrate the variation of donut-shaped depletion pattern which influenced by multiple primary aberrations. The simulation is base on a common stimulation emission of depletion (STED) system composed by Gaussian laser and vortex phase plate. The simulation results are helpful guidelines for analyzing the aberration of depletion patterns in real situations.

An Acid Catalyzed Reversible Ring-Opening/Ring-Closure Reaction Involving A Cyano-Rhodamine Spirolactam, H. Li, H. Guan, X. Duan, J. Hu, Guiren Wang, Qian Wang

Faculty Publications

Cyanamide was introduced into the rhodamine spirolactam framework to produce a colorless and non-fluorescent compound RBCN. It shows a reversible ring-opening/ring-closure process in response to the solution pH, which exhibits an “ON/OFF” switching in its fluorescence. Different from other rhodamine-type dyes, the ring-open form of RBCN is stable in protic solvents under neutral, near neutral and basic conditions, showing a pink color and very strong fluorescence. We also demonstrated the potential of RBCN in live cell imaging.

The Metalogicon Of John Of Salisbury: Medieval Rhetoric As Educational Praxis, Brian Gilchrist

Electronic Theses and Dissertations

This dissertation addresses the following question: what are the implications of John of Salisbury's rhetorical theory for his approach to education? The Metalogicon, John's defense of the trivium, represents the primary text analyzed throughout the project. John's medieval rhetorical theory explicated the reciprocal relationship between rhetoric and education. The art of rhetoric acquired educational elements by providing ethical-theoretical frameworks to inform the practices of students and teachers. Experiences from the practices of students and teachers influenced the art of rhetoric. John called for an approach to medieval rhetorical education that could be placed into the service of all people living …

Integration Of Arbitrary Lumped Multiport Circuit Networks Into The Discontinuous Galerkin Time-Domain Analysis, Ping Li, Li Jun Jiang

Electrical and Computer Engineering Faculty Research & Creative Works

A hybrid electromagnetic (EM) circuit simulator is proposed for incorporating multiport lumped circuit networks through their admittance matrices into the discontinuous Galerkin time-domain (DGTD) method. The admittance matrix in the Laplace domain can be derived analytically or obtained from network parameters such as -parameters in the frequency domain. To convert frequency-dependent -parameters into the admittance matrix in the Laplace domain, the vector-fitting technique is employed to facilitate the mapping process. The computational domain of interest is split into two subdomains. One is the EM part solved by the DGTD, and another is the circuit part modeled by the basic I-V …