Digital Commons Network^™

A Comparison Of Course Quality Surveiy Results From Students On Gender Balanced And Gender Imbalanced Field Courses At Nols, Alexandra M. Alway

Graduate Student Theses, Dissertations, & Professional Papers

There is an extensive database of literature about diversity in outdoor Environmental Education and any of the studies focus on NOLS specifically. Several studies have investigated the impact of course composition in terms of gender as well as socioeconomic diversity; however, the research studies about course composition and gender were limited to differences between single gender and coed groups. The role of gender ratios on coed groups has not been widely researched. This study was designed to fill this gap in the research literature. Using course quality survey data, results showed that the student responses were significantly different between gender …

Rapid Orbit Refinement Of Potential Near-Earth Objects And Recovery Of Nearly Lost Asteroids, Austin Lantz Caughey

Theses and Dissertations

The Minor Planet Center alerts researchers about potential discoveries of new Near-Earth Objects (NEOs) on their NEO Confirmation Page (NEOCP). Most of these are indeed previously unstudied objects, which must be studied very promptly while initial predictions of their motions are still accurate. My thesis project has focused on the observation of these bodies, and the submission of their measured positions to the MPC within a few hours of observation. Data has been obtained using the Skynet Robotic Telescope Network, including the R-COP telescope in Perth, Australia; the PROMPT 3 telescope in La Serena, Chile; and Yerkes Observatory in Williams …

Fuzzy Decision Tree-Based Inference System For Liver Disease Diagnosis, Himaja Sivaraju

Theses and Dissertations

Medical diagnosis can be challenging because of a number of factors. Uncertainty in the diagnosis process arises from inaccuracy in the measurement of patient attributes, missing attribute data and limitation in the medical expert’s ability to define cause and effect relationships when there are multiple interrelated variables. Given this situation, a decision support system, which can help doctors come up with a more reliable diagnosis, can have a lot of potential.

Decision trees are used in data mining for classification and regression. They are simple to understand and interpret as they can be visualized. But, one of the disadvantages of …

An Overview Of Causal Directed Acyclic Graphs For Substance Abuse Researchers, Michael Lewis, Alexis Kuerbis

Publications and Research

Background. Within substance abuse research, quantitative methodologists tend to view randomized controlled trials (RCTs) as the “gold standard” for estimating causal effects, in part due to experimental manipulation and random assignment. Such methods are not always possible due to ethical and other reasons. Causal directed acyclic graphs (causal DAGs) are mathematical tools for (1) precisely stating researchers' causal assumptions and (2) providing guidance regarding the specification of statistical models for causal inference with nonexperimental data (such as epidemiological data). Purpose. This manuscript describes causal DAGs and illustrates their use in regards to a long standing theory within the field of …

W423.1-009i-01 - College Of Arts And Sciences: Department Of Mathematics: Various Records, College Of Arts And Sciences

University Archives Finding Aids

No abstract provided.

W425-005e-01 - Student Organizations: Departmental Clubs: Various Records, Student Organizations

University Archives Finding Aids

No abstract provided.

W429.1-012l-01 - Accreditation And Association Membership Records: National Accreditation Of State Directors For Teacher Education And Certificate (Nasdtec): Self Study Records, Accreditation And Association Membership

University Archives Finding Aids

No abstract provided.

W442-001a-01 - Office Of Affirmative Action: Affirmative Action Officer: Departmental Applicants, Office Of Affirmative Action

University Archives Finding Aids

No abstract provided.

The Rise Of Cheap Nature, Jason W. Moore

Sociology Faculty Scholarship

We live at a crossroads in the history of our species – and of planetary life. What comes next is unknowable with any certainty. But it is not looking good. Environmentalist theory and research tells us, today, just how bad it is. Mass extinction. Climate Change. Ocean acidification. To these planetary shifts, one can add countless regional stories – runaway toxic disasters on land and at sea; cancer clusters; frequent and severe droughts. Our collective sense of " environmental consequences " has never been greater. But consequences of what? Of humanity as a whole? Of population? Of industrial civilization? Of …

Makerspaces And The Iowa Core: Connections In A High School Library, Tracie Marshall

Graduate Research Papers

Studies within the last five years have examined the subject of makerspaces, but few have explored the specific details of how standards and learning are achieved through use of a makerspace. The purpose of this qualitative study is to deepen understanding of five Iowa Core Standards while participants use a makerspace. Additionally, the study aims to determine the degree to which state learning standards are addressed through the activities students engage in during their use of a makerspace in a school library. A sample population of five participants, three students and two teachers were included in the study. One session …

Content Analysis Of Two Libraries Resources For Supporting Primary Economics Instruction, Lindsey J. Hilts

Graduate Research Papers

The teaching of some primary teachers is being compromised in schools with a lack of rich science and social studies library collections that have been intentionally developed by a professional teacher librarian in collaboration with teachers. The purpose of this study was to analyze and compare school library resources for the same economics unit taught in two different elementary schools’ primary classrooms, including the quality of resources available and their usefulness in teaching social studies economics standards. School B had a higher quantity of resources meeting the standards as well as more texts determined to be of high quality. The …

Utilizing Local Project Experts To Provide Professional Development For Early Childhood Educators : A Professional Development Project, Dawn Janette Johnson

Graduate Research Papers

This project consists of a series of professional development sessions designed to support early childhood educators in implementing Project Approach in their classrooms. The project utilizes local project experts of the Southeast Iowa Project Group. In addition, the project addresses the need of early childhood educators in rural southeast Iowa to have opportunities to attend professional development locally.

Research indicates that professional development is enhanced when educators are given opportunities to learn in authentic contexts, engage in problem-solving, practice new skills, and participate in extending learning experiences. Additionally, professional development greatly affects educators' abilities to provide children with high quality …

A Unit Design : Learning To Code With Finches, William V. Gruman

Graduate Research Papers

The purpose of this project was to develop a coding unit for students in grades 5-8 as an introductory programming course using the programming language SNAP! with a Finch robotics platform. The robotics platform provides a means of student engagement that allows them to complete computer programming challenges that drive interest and motivation. A series of five major learning activities were created as part of a middle school technology exploratory course. The beta testers included the four course instructors and around 30 of middle school student volunteers.

The designed unit was implemented once as a pilot, and was being implemented …

A New Vision For A 6-12 Library Science Curriculum, Jacqueline Leigh Seidl

Graduate Research Papers

The current perception of the teacher librarian's role in our Central Iowa school district is quite different than the role suggested in the professional research. Students leaving high school do not have the inquiry and evaluation skills expected at the postsecondary level (Donham, 2014). Students spend their free time using technology, but not for academic or voluntary reading (Igbokwe & Obidike, 2012). It is evident that the Common Core's focus on information inquiry and literacy, technology use, and pleasure reading are all facets of the teacher librarian's desired curriculum, but creating a curriculum where the three complement each other rather …

Bacterial Regulon Modeling And Prediction Based On Systematic Cis Regulatory Motif Analyses, Bingqiang Liu, Chuan Zhou, Guojun Li, Hanyuan Zhang, Erliang Zeng, Qi Liu, Qin Ma

School of Computing: Faculty Publications

Regulons are the basic units of the response system in a bacterial cell, and each consists of a set of transcriptionally co-regulated operons. Regulon elucidation is the basis for studying the bacterial global transcriptional regulation network. In this study, we designed a novel co-regulation score between a pair of operons based on accurate operon identification and cis regulatory motif analyses, which can capture their co-regulation relationship much better than other scores. Taking full advantage of this discovery, we developed a new computational framework and built a novel graph model for regulon prediction. This model integrates the motif comparison and clustering …

A Knowledge Analytic Comparison Of Cued Primitives When Students Are Explaining Predicted And Enacted Motions, Victor R. Lee

Instructional Technology and Learning Sciences Faculty Publications

The Knowledge in Pieces theoretical perspective posits p-prims as an important knowledge element in intuitive reasoning. Because p-prims are a class of knowledge elements developed and abstracted from everyday physical experiences, it seems plausible that immediate physical experiences, both in terms of sensations and actual observations of motion, would cue knowledge in different ways than when those experiences are just discussed as hypotheticals. This paper presents two cases to show that immediate embodied experiences with everyday objects does change which p-prims are cued and how they are deployed by students to explain situations involving motion. These cases come from a …

The Scholar Magician In English Renaissance Drama, Ashley M. Minnis-Lemley

Scripps Senior Theses

In this paper, I will explore the rise and fall of the scholar magician or sorcerer, both as a popular dramatic subject and as an arc for individual characters, and the ways in which these figures tied into contemporary fears about the intersection of religion and developing scientific knowledge.

Age, Growth And Natural Mortality Of Blackfin Snapper Lutjanus Buccanella From The Southeastern United States And U. S. Caribbean, Michael L. Burton, Jennifer C. Potts, Daniel R. Carr

Gulf and Caribbean Research

We determined ages of Blackfin Snapper (Lutjanus buccanella Cuvier 1828; n = 622) collected from the southeastern United States coast and U.S. Caribbean from 1979–2015 using sectioned sagittal otoliths. Opaque zones were determined to be annular, forming March – July (peaking in April–June). Blackfin Snapper ranged from 1–27 years and from 180–609 mm total length (TL). Body size relationships for Blackfin Snapper were: TL = 1.09 FL + 0.81 (n = 203, r2 = 0.99); FL = 0.91 TL + 3.38 (n = 203, r2 = 0.99); TL = 1.23 SL + 14.27 (n = 83, r2 = 0.97); FL …

Drained And Undrained Analyses Of Cylindrical Cavity Contractions By Bounding Surface Plasticity, S. L. Chen, Y. N. Abousleiman

Faculty Publications

This paper develops a rigorous semi-analytical approach for drained-undrained cylindrical cavity contraction problems in bounding surface elastoplastic geomaterials. For undrained situations, the effective radial, tangential, and vertical component stresses can be solved directly from the constitutive governing differential equations as an initial value problem, the excess pore pressure subsequently being determined from the radial equilibrium equation. In contrast, for the drained case the Eulerian radial equilibrium equation must be first transformed into an equivalent one in a Lagrangian description via the introduction of an auxiliary variable, then solved together with the elastoplastic constitutive relation for the three stress components as …

Finding, Understanding And Learning: Making Information Discovery Tasks Useful For Children And Teachers, Ion Madrazo Azpiazu, Nevena Dragovic, Maria Soledad Pera

Computer Science Faculty Publications and Presentations

We present our ongoing efforts on the development of a search environment tailored to 6-15 year-olds that can foster learning though retrieval of materials that not only satisfy the information needs of users but also match their reading abilities. YouUnderstood.me is an enhanced environment based on a popular search engine specifically designed to help students deal with search for learning tasks, and allow teachers to track their progress. An initial assessment conducted on YouUnderstood.me and well-known (children-oriented) search engines based on queries generated by K-9 students, showcases the need for this type of environment.

“One Size Doesn’T Fit All": Helping Users Find Events From Multiple Perspectives, Sean Maclachlan, Stacey Donohue, Nevena Dragovic, Maria Soledad Pera

Computer Science Faculty Publications and Presentations

In this demo, we showcase a novel mobile application that offers various ways to present recommendations to users. While the majority of the existing applications in the tourism domain either focus on event recommendation or event browsing, our mobile application acknowledges the fact that users have diffrent interests at different times and for different occasions. Consequently, while suggested events are filtered and ranked by proximity and date ranges to ensure they suit users' needs, each user is allowed to choose how to access these suggestions in one of four ways: search, categorized browsing, following, and traditional recommendations.

Anything Fun Going On?: A Simple Wizard To Avoid The Cold-Start Problem For Event Recommenders, Stacey Donohue, Nevena Dragovic, Maria Soledad Pera

Computer Science Faculty Publications and Presentations

In this demo, we showcase a set up wizard designed to bypass the cold start problem that often affects recommendation systems in the event domain. We have developed a mobile application for tourists, RelEVENT, which allows them to quickly and non-intrusively set up preferences and/or interests related to events. This will directly affect the degree to which they can receive personalized recommendations on-the-fly and become aware of events happening around town that might be appealing to them.

Identifying And Scheduling Loop Chains Using Directives, Ian J. Bertolacci, Michelle Mills Strout, Stephen Guzik, Jordan Riley, Catherine Olschanowsky

Computer Science Faculty Publications and Presentations

Exposing opportunities for parallelization while explicitly managing data locality is the primary challenge to porting and optimizing existing computational science simulation codes to improve performance and accuracy. OpenMP provides many mechanisms for expressing parallelism, but it primarily remains the programmer’s responsibility to group computations to improve data locality. The loopchain abstraction, where data access patterns are included with the specification of parallel loops, provides compilers with sufficient information to automate the parallelism versus data locality tradeoff. In this paper, we present a loop chain pragma and an extension to the omp for to enable the specification of loop chains and …

Sustained Flow Index: Stochastic Measure Of Freeway Performance, Siavash Shojaat, Justin Geistefeldt, Scott A. Parr, Chester G. Wilmot, Brian Wolshon

Faculty Publications

Research into the operation of traffic flow at high volumes reveals that the capacity of freeways is not a fixed number but is rather a random variable. Since traditional operational performance measures for the analysis of traffic flow on freeways typically disregard the randomness of capacity, new approaches to make use of the concept of randomness for freeway operation analysis are required. To address that need, this paper introduces a new indicator of freeway performance based solely on a stochastic approach to capacity computation. With this new indicator, the maximum reliable volume that can be carried by a freeway over …

Further Results On Edge - Odd Graceful Graphs, Mohammed Seoud, Maher Salim

Turkish Journal of Mathematics

wheel $W_n$, for $n\equiv 1,\ 2$ and $3\ mod\ 4$; $C_n\bigodot\bar{K}_{2m-1}$; even helms; $P_n\bigodot\bar{K}_{2m}$ and $K_{2,s}$. Also we present two theorems of non edge - odd graceful graphs and an idea to label complete graphs.

Restall's Proof-Theoretic Pluralism And Relevance Logic, Teresa Kouri

Philosophy Faculty Publications

Restall (Erkenntnis 79(2):279–291, 2014) proposes a new, proof-theoretic, logical pluralism. This is in contrast to the model-theoretic pluralism he and Beall proposed in Beall and Restall (Aust J Philos 78(4):475–493, 2000) and in Beall and Restall (Logical pluralism, Oxford University Press, Oxford, 2006). What I will show is that Restall has not described the conditions on being admissible to the proof-theoretic logical pluralism in such a way that relevance logic is one of the admissible logics. Though relevance logic is not hard to add formally, one critical component of Restall’s pluralism is that the relevance logic that gets added must …

Acoustic Entropy Of The Materials In The Course Of Degradation, Ali Kahirdeh, M. M. Khonsari

Faculty Publications

We report experimental observations on the evolution of acoustic entropy in the course of cyclic loading as degradation occurs due to fatigue. The measured entropy is a result of the materials' microstructural changes that occur as degradation due to cyclic mechanical loading. Experimental results demonstrate that maximum acoustic entropy emanating from materials during the course of degradation remains similar. Experiments are shown for two different types of materials: Aluminum 6061 (a metallic alloy) and glass/epoxy (a composite laminate). The evolution of the acoustic entropy demonstrates a persistent trend over the course of degradation.

Blood, Donors And Dollars: Rethinking Financial Sustainability Of Safe Blood Services In Tanzania, Kahabi Isangula, Sharon Brownie, Abela Mahimbo, Solomon Kibona, Abdu Juma, Deus Mogela

School of Nursing & Midwifery, East Africa

Introduction: Collection, processing and distribution of safe blood in Tanzania occurs within a free-for-service context, that is, a collection from non-remunerated blood donors and distributing freely to the needy people through health facilities. The safe blood services in the country appear to be crippled with many challenges and cannot meet the demand for blood and its products. As such, a need for rethinking collection methods, financial models and possible mechanisms for donor remuneration is evident.

Methods: In this paper, we venture on multi-stakeholder meetings and ongoing discussions regarding the internal mechanisms of safe blood transfusion financing. The intent is to …

Marine Infectious Disease Dynamics And Outbreak Thresholds: Contact Transmission, Pandemic Infection, And The Potential Role Of Filter Feeders, Gorka Bidegain, Eric N. Powell, John M. Klinck, Tal Ben-Horin, Eileen E. Hofmann

CCPO Publications

Disease-causing organisms can have significant impacts on marine species and communities. However, the dynamics that underlie the emergence of disease outbreaks in marine ecosystems still lack the equivalent level of description, conceptual understanding, and modeling context routinely present in the terrestrial systems. Here, we propose a theoretical basis for modeling the transmission of marine infectious diseases (MIDs) developed from simple models of the spread of infectious disease. The models represent the dynamics of a variety of host-pathogen systems including those unique to marine systems where transmission of disease is by contact with waterborne pathogens both directly and through filter-feeding processes. …

An Interactive Tool For The Computational Exploration Of Integrodifference Population Models, Kennedy Agwamba

HMC Senior Theses

Mathematical modeling of population dynamics can provide novel insight to the growth and dispersal patterns for a variety of species populations, and has become vital to the preservation of biodiversity on a global-scale. These growth and dispersal stages can be modeled using integrodifference equations that are discrete in time and continuous in space. Previous studies have identified metrics that can determine whether a given species will persist or go extinct under certain model parameters. However, a need for computational tools to compute these metrics has limited the scope and analysis within many of these studies. We aim to create computational …