Digital Commons Network^™

Developing A Contextualization Of Students’ Mathematical Problem Solving, Sean P. Yee, Jonathan Bostic

School of Teaching and Learning Faculty Publications

This paper investigates how students contextualize mathematical problem solving, not the actual problems. When students attempt to solve problems, what contexts (situational, cultural, or conceptual) do they evoke to describe their experiences with problem solving? The Common Core State Standards for Mathematical Practice emphasize contextualizing and decontextualizing problems, but what does this mean in practice? Middle and high school students were asked to attempt ability-appropriate problems during semi-structured interviews in this qualitative study. Situational contexts were analyzed using representation analysis (symbolic and nonsymbolic) while cultural contexts were analyzed using linguistic analysis (metaphors). The synergy of these two analyses developed a …

Collaborative Course Design And Inquiry-Based Approaches In Geoscience Education, Paul E. Baldauf, Robert Hill

Quadrivium: A Journal of Multidisciplinary Scholarship

No abstract provided.

Experimental Evolution: Prospects And Challenges, Frank Rosenzweig, Gavin Sherlock

Biological Sciences Faculty Publications

No abstract provided.

Experimental Microbial Evolution: History And Conceptual Underpinnings, Julian Adams, Frank Rosenzweig

Biological Sciences Faculty Publications

We chronicle and dissect the history of the field of Experimental Microbial Evolution, beginning with work by Monod. Early research was largely carried out by microbiologists and biochemists, who used experimental evolutionary change as a tool to understand structure-function relationships. These studies attracted the interest of evolutionary biologists who recognized the power of the approach to address issues such as the tempo of adaptive change, the costs and benefits of sex, parallelism, and the role which contingency plays in the evolutionary process. In the 1980s and 1990s, an ever-expanding body of microbial, physiological and biochemical data, together with new technologies …

The Valley-Of-Death: Reciprocal Sign Epistasis Constrains Adaptive Trajectories In A Constant, Nutrient Limiting Environment, Kami E. Chiotti, Daniel J. Kvitek, Karen H. Schmidt, Gregory Koniges, Katja Schwartz, Elizabeth A. Donckels, Frank Rosenzweig, Gavin Sherlock

Biological Sciences Faculty Publications

The fitness landscape is a powerful metaphor for describing the relationship between genotype and phenotype for a population under selection. However, empirical data as to the topography of fitness landscapes are limited, owing to difficulties in measuring fitness for large numbers of genotypes under any condition. We previously reported a case of reciprocal sign epistasis (RSE), where two mutations individually increased yeast fitness in a glucose-limited environment, but reduced fitness when combined, suggesting the existence of two peaks on the fitness landscape. We sought to determine whether a ridge connected these peaks so that populations founded by one mutant could …

Continuity And The Open Whole: A Comparison Of Recent (Peircian) Ethnographies, Joshua Reno

Anthropology Faculty Scholarship

A comparison of Eduardo Kohn's "How forests think: Toward an anthropology beyond the human" and David Pedersen's "American value: Migrants, money, and meaning in El Salvador and the United States" which explores their relationship to the continuist ontology of the philosopher Charles S. Peirce and its implications for contemporary anthropology.

Connections, Issue 4, College Of Health And Human Services

College of Health and Human Services Newsletter

In this issue

• College experiences busy, productive
• Homecoming weekend
• Dean presents annual awards and state of the college address
• Blindness and low vision studies awarded $3.7 million
• Interdisciplinary Doctoral Research Conference presents research and awards
• OT Professor Debra Lindstrom to receive national award
• Departments sponsor annual scholarly events
• BRAIN lab in the news
• Outstanding Alumni

College Of Arts And Sciences E-News Issue 20: December 2014, College Of Arts And Sciences

College of Arts and Sciences news

• State-of-the-Art Confocal Microscope Changes Research at WMU
• WMU Hosts Second Michigan Autism Conference
• Physics Professor Awarded $150,000 NSF Grant
• A Campus Love Story: Marisa & Brandon
• Victim Advocate Assistant Arica Nelson
• Full Circle
• Kathryn Hemmen Reflects on Semester in Japan

Creating Tomorrow, Fall 2014, College Of Engineering

College of Engineering Magazines

Annual magazine for the College of Engineering at Utah State University.

Cold Hardiness And Deacclimation Of Overwintering Papilio Zelicaon Pupae, Caroline M. Williams, Nicolai Annegret, Brent J. Sinclair, Laura V. Ferguson, Mark A. Bernards, Jessica J. Hellmann

Biology Publications

Seasonally-acquired cold tolerance can be reversed at warm temperatures, leaving temperate ectotherms vulnerable to cold snaps. However, deacclimation, and its underlying mechanisms, has not been well-explored in insects. Swallowtail butterflies are widely distributed but in some cases their range is limited by low temperature and their cold tolerance is seasonally acquired, implying that they experience mortality resulting from deacclimation. We investigated cold tolerance and hemolymph composition of Anise swallowtail (Papilio zelicaon) pupae during overwintering in the laboratory, and after four days exposure to warm temperatures in spring. Overwintering pupae had supercooling points around − 20.5 °C and survived …

Science As Storytelling, David A. Grandy, Barry R. Bickmore

BYU Studies

Much if our modern world revolves around something called "science." But what is science? Interestingly, this turns out to be a very difficult question to answer because every definition seems to include something we don't consider science or seems to exclude something we do consider science. In this essay, the authors present their own definition: Science is the modern art of creating stories that explain observations of the natural world and that could be useful for predicting, and possibly even controlling, nature. They then refine this definition by offering seven rules that scientific storytelling must follow to distinguish it …

Redesign Of Trans-Splicing Molecules For The Correction Of Dystrophia Myotonica Type 1 Toxic Rna Transcripts, Eleanor G. Harrison

Undergraduate Honors Theses

Dystrophia myotonica (DM1), one of the most common forms of muscular dystrophy, is caused by a repeated trinucleotide expansion in the DMPK gene. This mutation results in the accumulation of toxic cellular RNA transcripts. Spliceosome-mediated RNA trans-splicing (SMaRT) technology is a form of gene therapy that possesses the potential to correct these toxic RNA transcripts and thus cure the disease. Despite its promise, prior research applications of SMaRT technology to DM1 have been hampered by poor efficiency and have not been validated in a relevant model of the disease. In order to improve the efficiency of trans-splicing, this study examined …

"Beyond The Pavement" And "Setting Fire To The Sky" With Critical Introduction: "Exploring The Dark: Gothic Short Stories", Samantha Nicole Campbell

Undergraduate Honors Theses

This thesis explores the genre of gothic literature by outlining the themes and common techniques that writers use. It discusses prominent writers in the genre, as well as critiques their techniques and compares them to my own. Two fiction pieces are accompanied with the critical introduction that fit the gothic literature genre.

Sagestep News, Fall 2014, No. 25, Sagestep

Newsletters

Seasonal newsletter of SageSTEP.

Sagestep News, Winter 2014, No. 23, Sagestep

Newsletters

Seasonal newsletter of SageSTEP.

Alumni Journal - Volume 85, Number 3, Loma Linda University School Of Medicine

Alumni Journal, School of Medicine

Features
8 | Insights from a Surgeon
12 | Graduation 2014
28 | The Doctor's Kid
38 | History Feature: A New Name
40 | AIMS Special Report

From the President
2 | Celebrating Our Graduates

From the Dean
4 | Highlights of the 100th Anniversary Graduation

News
5 | This and That
6 | School of Medicine News
44 | In Memoriam
46 | Alumni in the News
48 | Giving Highlight: Hyacinths for the Soul

Historical Snapshot
52 | Where Our Doctor's Work[ed]

What's Up Doc?
53 | Barbara Chase McKinney '88

Dynamics Of A Two-Dimensional Competitive System Of Rational Difference Equations With Quadratic Terms, Vahidin Hadžiabdić, Mustafa Kulenovic, Esmir Pilav

Mathematics Faculty Publications

We investigate global dynamics of the following systems of difference equations:

[Mathematical equations cannot be displayed here, refer to PDF]

where the parameters b₁, a₂, A₁, c₂, are positive numbers and the initial condition y₀ is an arbitrary nonnegative number and x₀ is a positive number. We show that this system has rich dynamics which depends on the part of the parametric space. We find precisely the basins of attraction of all attractors including the points at ∞.

Capital Punishment Reforms In Illinois: Comparing The Views Of Police, Prosecutors, And Public Defenders, Robert M. Lombardo, David Olson

Criminal Justice & Criminology: Faculty Publications & Other Works

On 9 March 2011, Governor Patrick Quinn abolished capital punishment in Illinois stating that the state’s system of imposing the death penalty was inherently flawed. Quinn’s announcement followed an eleven-year effort to end the death penalty that began with a 2000 moratorium on executions imposed by then Governor George Ryan. This moratorium was the direct result of the appellate reversal of a series of death-row convictions. Prompted by these reversals, Ryan also created the Governor’s Commission on Capital Punishment to study the use of the death penalty in Illinois. As a result of this effort, comprehensive legislation was enacted to …

Cole Train | V.11, No.2 (Fall 2014), Houston Cole Library

Library Annual Reports & Newsletters

No abstract provided.

Examine The Role Of Social Media And Volunteered Geographic Information In 2014’S California Drought, Ligang Zhang

Community and Regional Planning Program: Theses

Abstract

Social media encompasses online communication platforms. Presently, it has been involved in the management and mitigation of crises and disasters. The paper discusses the use of social meida and Volunteered Geographic Information (VGI) in the management of the 2014’s California drought. The significance of social media and volunteered geographic information is emphasized in the study. As well as factors that influence the suitability of the two, social media and voluntary geographic information in the whole process of managing the California drought are also explored. The SWOT (Strengths, Weaknesses, Opportunities, Threats) analysis of one-way info-sharing, two-way info-sharing, rumor control, reconnection, …

Use Of Social Media By Indiana Principals And Superintendents, Robert Stephen Griffin Jr.

All-Inclusive List of Electronic Theses and Dissertations

The purpose of this study was to examine the use of social media by Indiana K-12 principals and superintendents. The use of social media has become prevalent both as a social and professional tool. The social media movement has evolved quickly over the past five years; however, schools and school districts have been slow to effectively utilize this tool out of fear, apprehension, and ignorance. The opportunity to explore social media as a professional tool by educational leaders was opportune and timely as this tool becomes a multi-purpose tool in today’s society. Descriptive statistics, independent sample t test, and one-way …

Arsenic Targets Neural Plate Border Specifier Cells In P19 Cells, Christopher Mccoy

All Theses

Epidemiological studies have shown that arsenic exposure during early embryogenesis can cause reduced weight gain and neurological deficits later on in life. In addition, in vitro and in vivo studies have indicated that arsenic suppresses neurogenesis and myogenesis. The exact mechanism of how arsenic causes these undesired developmental outcomes is poorly understood, however both skeletal muscle and sensory neuron development require the Wnt/β-catenin signaling pathway to initiate the specific differentiation of precursor cells. We were interested in determining the target cell population of arsenic and its metabolites. Arsenic's metabolites were of interest because they have been shown to be more …

Characterization Of A Novel Fungal-Specific Gene, Fug1, In Fusarium Verticillioides, John Byron Ridenour

Graduate Theses and Dissertations

Filamentous fungi are responsible for numerous plant and animal diseases. The filamentous ascomycete Fusarium verticillioides is a globally important pathogen of maize, capable of causing severe yield reductions and economic losses. Also of substantial concern is the contamination of infected kernels with fumonisins, toxic secondary metabolites linked to toxicoses in humans and livestock. The number of sequenced fungal genomes is rapidly increasing. However, functional characterization of fungal genes has not progressed at a comparable rate. In pathogenic fungi, uncharacterized genes represent a source for novel virulence factors or anti-fungal targets. Therefore, to fully understand the genetic mechanisms underlying fungal pathogenesis, …

Microbial Community Shifts Caused By Changes In The Primary Oxidant At A Drinking Water Treatment Plant, Connie Marie Moloney

Graduate Theses and Dissertations

Microbial communities resistant to common oxidants can cause concerns for water treatment plants (WTPs). If a bacterium is not fully oxidized during disinfection, these species can impede upon filtration processes or seed biofilms in the distribution system. In an effort to minimize disinfection by-products (DBP's) that result from the reaction of chlorine (Cl2) with natural organic matter, water treatment plants have the option to change their primary oxidant to chlorine dioxide (ClO2). The following study examines the change in microbial communities during the sedimentation process under differing oxidation regimes, specifically chlorine (Cl2) and ClO2 at the local water treatment plant …

Development Of A Hydrologic Model For An Urban Headwater Stream: The Influence Of Pervious Surface Properties On Runoff Dynamics, Dawn A. Farver

Graduate Theses and Dissertations

A hydrologic model was developed for the Mullins Creek (MC) catchment located on the University of Arkansas campus in Fayetteville, Arkansas. The MC catchment is a small, dynamic urban stream system with a range of land use/land cover (LULC), an extensive and well-developed stormwater drainage network, and extensive urbanization (over 90% developed, and almost 50% impervious surface area (ISA)). Selected datasets provided information on the stormwater drainage network, the physical attributes of the catchment and receiving waterway (i.e. drainage area, slope, etc.), infiltration potential of soil map units, LULC, and percent ISA. These datasets were analyzed to provide input parameters …

Identification Of Root-Knot Nematodes (Meloidogyne Spp.) Of Arkansas Using Molecular Diagnostics, Churamani Khanal

Graduate Theses and Dissertations

Root-knot nematodes (Meloidogyne spp.) are highly-adaptable, obligate plant parasites distributed worldwide. In addition, root-knot nematodes are an economically important genus of plant-parasitic nematodes. Meloidogyne incognita, M. arenaria, M. javanica, M. hapla and M. graminis have been reported from Arkansas during 1964 to 1994. Previous identifications were based primarily on morphological characters and host differentials. In this study, identification using molecular diagnostics methods was performed to identify Meloidogyne species present in Arkansas. A total of 106 soil and root samples from 36 of the 75 counties were collected and processed to obtain root-knot nematodes. Polymerase chain reaction (PCR) was performed …

Dissection Of Gray Leaf Spot Of Maize Through Functional Genomics, Robert Louis Hirsch

Graduate Theses and Dissertations

Gray leaf spot, caused by Cercospora zeae-maydis, is a devastating disease of maize that reduces yields and increases management costs. C. zeae-maydis penetrates maize leaves through stomata, but the biological and molecular bases of this process are poorly understood. The goal of this research was to elucidate the biological parameters of stomatal infection in C. zeae-maydis, and to identify and characterize novel genetic pathways involved in stomatal sensing and pathogenesis. Histopathological observations of a GFP-expressing strain of C. zeae-maydis during infection of maize indicated that the fungus responded to host-derived stomatal cues during the infection process. C. zeae-maydis was observed …

Structure, Aboveground Biomass, And Soil Characterization Of Avicennia Marina In Eastern Mangrove Lagoon National Park, Abu Dhabi, Tareefa Alsumaiti

Graduate Theses and Dissertations

Mangrove forests are national treasures of the United Arab Emirates (UAE) and other arid countries with limited forested areas. Mangroves form a crucial part of the coastal ecosystem and provide numerous benefits to society, economy, and especially the environment. Mangrove trees, specifically Avicennia marina, are studied in their native habitat in order to characterize their population structure, aboveground biomass, and soil properties. This study focused on Eastern Mangrove Lagoon National Park in Abu Dhabi, which was the first mangrove protected area to be designated in UAE. In situ measurements were collected to estimate Avicennia marina status, mortality rate (%), …

Evaluation Of Medicago Truncatula Accessions For Triterpene Saponins And Their Potential Impacts On Plant Pests, Samantha Roberson

Graduate Theses and Dissertations

Plants have developed numerous ways to protect themselves from microbes and insects, including producing secondary metabolites that negatively impact an invading pathogen or pest. Saponins are specialized metabolites found in many plant species and may play a role in protecting the plant. Though saponins are found in many plant species, triterpene saponins are found primarily in dicotyledons, including legumes. Medicago truncatula is a model system for studying legume biology and some accessions accumulate high concentrations of saponins. Accessions of M. truncatula known to have differing levels of saponins in both foliar and root tissues were tested for their suitability as …

Clemson Commencement Program, December 2014, Clemson University

Clemson Commencement Programs

No abstract provided.