Digital Commons Network^™

Mining And Analysis Of Real-World Graphs, Armita Abedijaberi

Doctoral Dissertations

"Networked systems are everywhere - such as the Internet, social networks, biological networks, transportation networks, power grid networks, etc. They can be very large yet enormously complex. They can contain a lot of information, either open and transparent or under the cover and coded. Such real-world systems can be modeled using graphs and be mined and analyzed through the lens of network analysis. Network analysis can be applied in recognition of frequent patterns among the connected components in a large graph, such as social networks, where visual analysis is almost impossible. Frequent patterns illuminate statistically important subgraphs that are usually …

Sentiment Analysis Of Global Warming Using Twitter Data, Nithisha Mucha

Computer Science

Global warming or climate change is one of the most discussed topics of the decade. Some people think global warming is a severe threat to the planet whereas some people think, it is a hoax. The goal of this paper is to analyze how people’s perceptions have changed over the years for past decade using sentiment analysis on Twitter data. Twitter is a social networking platform with 320 million monthly active users. I have captured tweets with words such as “Global warming”, “Climate Change” etc. and applied sentiment analysis to classify them as positive, negative or neutral tweets. I have …

Landscape And Climate Drivers Of Harmful Algal Blooms In Iowa, Aaron Padilla

Dissertations and Theses @ UNI

Insuring the safety of our water for consumption and recreation is a crucial but extremely difficult and resource intensive activity of environmental protection agencies. One of the ways our water is at risk is through the increased frequency, and intensity of harmful algal blooms (HABs). When CyanoHABs occur, they can produce a toxic byproduct, most notably microcystin in freshwater, which can be harmful to humans and animals. Previous research has indicated these blooms are driven by increased eutrophication of water bodies, the excess loading of nutrients. In Iowa, the main driver of CyanoHABs in most watersheds is agricultural runoff, which …

Spatial Disparities And Socio-Economic Conditions : A Food Desert Analysis Of Greater Des Moines, Iowa, David Jensen

Dissertations and Theses @ UNI

Current research suggests that socioeconomic makeup of geographic areas within a city has implications on location and accessibility of food retail stores. Disadvantaged areas with relatively poor access to healthy and affordable food are what literature has identified as “food deserts”. The purpose of this research is to explore the relationships between geographic areas with relatively low socioeconomic characteristics and food stores within the greater Des Moines, Iowa area. By way of survey, grocery and convenience stores are measured on their healthy food quality, advertisements, and other factors. GIS techniques are then used to measure accessibility to stores by low …

Notices, Editorial Office

Contemporary Aesthetics (Journal Archive)

No abstract provided.

The Art Scenes, Jozef Kovalčik, Max Ryynänen

Contemporary Aesthetics (Journal Archive)

"The art scene in Berlin is political." "The Atlanta hip hop scene is red hot!" These are remarks we have heard lately about scenes. Scenes are a commonplace in art talk. But what are scenes, and what is their role in arts? Aestheticians, art theorists, and art historians often pay attention to different scenes. Although many classics in the field are based on comments regarding only one scene, which is, for example, the case with Arthur C. Danto's "The Artworld" (1964) and Susan Sontag's "Notes on Camp" (1964), which both focus on New York, there is still no discussion about …

Rhizomatic Mnemosyne: Warburg, Serres, And The Atlas Of Hermes, María Del Carmen Molina Barea

Contemporary Aesthetics (Journal Archive)

This essay aims to examine Aby Warburg’s Mnemosyne Atlas according to two conceptual perspectives that seem deeply interwoven, Deleuze and Guattari’s notion of rhizome and Michel Serres’s metaphor on Hermes. Both theoretical approaches cast light on the epistemological implications of the Mnemosyne Atlas and explore its intriguing composition from an innovative point of view. Specifically, this paper excavates the disrupted nature of the Warburgian Atlas, paying particular attention to the schizophrenic proliferation of unexpected connections. In this scenario, it will be necessary to elucidate the terminological opposition between ‘atlas’ and ‘archive,’ as studied by Boris Groys, Foucault, and Derrida, …

[You Are With] Kin And [You Can Be At] Ease, Abdul Azim Al Ghussein

Theses and Dissertations

This thesis is an exploration of hospitality, sharing and acclimation within a studio art practice as a means of fostering consideration of others. I employ a practice whereby I disrupt the typical gallery context, and through the production and dissemination of consumable items from the Middle East, I examine how resources can be used, valued, and shared to accommodate various and unspecified others and provide opportunities for crossing thresholds of guest and host relationships.

Skin-Tone And Academic Achievement Among 5-Year-Old Mexican Children, Selamawit Hailu

Theses and Dissertations

Skin-tone based social stratification has been characterized as an enduring part of the U.S. racial landscape (Hunter, 2002). Despite the plethora of research that examines the racial disparities in education (e.g., Reardon & Portilla, 2015), and an emerging literature finding that lighter skin-tones are associated with higher educational attainment among adults (Hunter, 2002) few studies have examined whether similar processes emerge during early childhood. Thus, grounded in Garcia Coll and colleagues’ (1996) integrative model, we tested whether skin-tone predicted children’s academic achievement, and whether these relations were modified by children’s ethnic-racial identification (i.e., positive ethnic-racial attitudes and centrality). Consistent with …

Editorial: Dismantling Children’S Rights In The Global North, Kiaras Gharabaghi, Ben Anderson-Nathe

School of Social Work Faculty Publications and Presentations

Editorial. The article discusses children's rights in the global North. Topics discussed include responsibility of all states and their governments to protect those rights, need to mitigate infringements on the rights of children and youth, and dependency of children and youth on their families and families are willing to take to provide them with opportunities for health, education and safety.

Race To The Bottom? Local Tax Break Competition And Business Location, Evan Mast

Employment Research Newsletter

No abstract provided.

Global Climate Change In U.S. High School Curricula: Portrayals Of The Causes, Consequences, And Potential Responses, Casey R. Meehan, Brett L.M. Levy, Lauren Collet-Gildard

Educational Theory and Practice Faculty Scholarship

Broad misconceptions about global climate change (GCC) could hinder efforts to address this large-scale problem, and curricular materials can play a substantial role in what students learn about GCC. This study examines how U.S. high school textbooks and supplemental curricular materials published between 2007 and 2012 portray the causes, consequences, and potential responses to GCC. Our data included text segments related to these topics in five science textbooks, four social studies textbooks, and eight sets of GCC supplemental materials. To analyze these text segments, we conducted several rounds of coding, first categorizing curricula by their acceptance of the human causes …

Re-Entry Challenges: Comparison And Contrasts Between Korean And American Mks, Ok Kyung Ha

Master's Theses

Problem

Missionary Kids (MKs) have a different experience in the mission fields in terms of culture, language, and social adjustment when compared with their parents. They also face another challenge when they return to their parents’ home country, for they feel out of place and often do not think of their parents’ country as home. The purpose of this Masters thesis is to investigate the experience of MKs in the mission field, during re-entry, and to research the common elements or differences between Korean MKs and American MKs in their re-entry process.

Method

The research method used in this Masters …

La Música: Una Contribución Esencial En El Desarrollo De La Cultura E Identidad Nuyoricans, Rocío Sotelo Arce

La BloGoteca de Babel

No abstract provided.

Impacts Of Drainage Systems On Stormwater Hydrology: Rocky Branch Watershed, Columbia, South Carolina, Logan Ress

Theses and Dissertations

The effects of urbanization and associated land use changes, specifically increases in impervious surfaces, have long been the focal point of urban hydrologic research. However, studies and calculations that consider impervious surfaces alone do not encompass all factors that influence urban hydrologic response. Artificial structures such as storm sewer (SS) systems and road networks increase rates of stormwater conveyance, yet these artificial networks are rarely considered in computations of drainage densities and associated hydrologic alterations. This study examines several hydrologically relevant descriptors that can be used to better understand the impact of urbanization on small watersheds. Rainfall and stormflow data …

Student-Centered Approach Vs. Teacher-Centered Approach: Which Is More Effective For A Graduate Data Analytics Course In An E-Learning Environment?, Kyle Camac

Theses and Dissertations

This action research study explored and tested the effectiveness of using student-centered methodology within an e-learning environment for a graduate level class in data analytics at Southern New Hampshire University to enhance students’ scholastic abilities. The term scholastic abilities refers to the students’ capabilities to apply to their personal world what is being taught. Inductive teaching and learning was used in this study and the student participants were assessed on their discussion posts and final projects. The primary question in this action research was: “How, if at all, can student-centered instruction increase achievement of students within a graduate level data …

Ground Truthing: The Politics And Culture Of Soil And Water Conservation In Iowa Agriculture, Brianna Farber

Theses and Dissertations

This dissertation explores the complex relationships between people, technologies, and ecologies involved in natural resource conservation and industrial agriculture in Iowa. Specifically I focus on the various efforts to address water pollution affected primarily by agriculture in the state. Using a theoretical framework informed by political ecology, Science and Technology Studies (STS), and posthumanist theory, I draw on thirteen months of ethnographic fieldwork to discuss what makes conservation culturally salient and practically difficult to achieve. This difficulty around conservation arises in part from the tensions between what I describe as the corn assemblage and the prairie assemblage. I identify these …

A Theoretical And Stylistic Analysis Of Paul Ben-Haim’S Five Pieces For Piano, Op. 34 And Piano Sonata, Op. 49, Rachel Bletstein

Theses and Dissertations

The purpose of this study is to provide a theoretical and stylistic analysis of Paul Ben-Haim’s Five Pieces for Piano, Op. 34 and Piano Sonata, Op. 49. The study consists of an analysis of form, meter, rhythm, harmony, melody, keyboard usage, and stylistic elements.

The study helps to educate musicians about Ben-Haim’s music and conveys how the works are representative of compositional practices that combine Middle Eastern and Western elements. This study also introduces two major works of Ben-Haim’s, including Five Pieces for Piano, Op. 34, and Piano Sonata, Op. 49. This study promotes one of the most significant Israeli …

Supporting Engagement Among African American Males In World Geography Class Through The Implementation Of Culturally Relevant Pedagogy: A Self-Study, Audra Dorr Brown

Theses and Dissertations

Given the reality of disenfranchised and marginalized students sitting in today’s classrooms, it is imperative that teachers meet the pedagogical needs of these students. I embarked on a self-study that would improve my personal pedagogy. Research shows that using elements from the theoretical frameworks of culturally relevant pedagogy, reality pedagogy, critical race theory, and critical race pedagogy can be an effective approach to teaching students that are marginalized. I designed and implemented three lessons that employed practitioner-applied pedagogical practices based on these four theoretical frameworks. This self-study identified the benefits and challenges of these lessons as they relate to the …

Climate Change And Mountaintop Removal Mining: A Maxent Assessment Of The Potential Dual Threat To West Virginia Fishes, Lindsey R F Hendrick

Theses and Dissertations

Accounts of species’ range shifts in response to climate change, most often as latitudinal shifts towards the poles or upslope shifts to higher elevations, are rapidly accumulating. These range shifts are often attributed to species ‘tracking’ their thermal niches as temperatures in their native ranges increase. Our objective was to estimate the degree to which climate change-driven shifts in water temperature may increase the exposure of West Virginia’s native freshwater fishes to mountaintop removal surface coal mining. Mid-century shifts in habitat suitability for nine non-game West Virginia fishes were projected via Maximum Entropy species distribution modeling, using a combination of …

Making Babies With Cows, Scout Calvert

University of Nebraska-Lincoln Libraries: Faculty Publications

The conceit of section one of this essay is partial role reversal. How would a doctor who was a cow explain to yearling interns how to breed humans? This is what a cow might sound like if she thought about humans the ways that human purebred livestock breeders think about cows. Section two switches back to a human perspective and treats the extensive interventions into cattle reproduction as the mundane options that they have become for many farmers. This essay highlights the traffic of reproductive technologies across the porous human-bovine species boundary.

Crop Height Estimation With Unmanned Aerial Vehicles, Carrick Detweiler, David Anthony, Sebastian Elbaum

School of Computing: Faculty Publications

An unmanned aerial vehicle (UAV) can be configured for crop height estimation. In some examples, the UAV includes an aerial propulsion system, a laser scanner configured to face downwards while the UAV is in flight, and a control system. The laser scanner is configured to scan through a two-dimensional scan angle and is characterized by a maxi mum range. The control system causes the UAV to fly over an agricultural field and maintain, using the aerial propulsion system and the laser scanner, a distance between the UAV and a top of crops in the agricultural field to within a programmed …

Internet Of Underground Things In Precision Agriculture: Architecture And Technology Aspects, Mehmet C. Vuran, Abdul Salam, Rigoberto Wong, Suat Irmak

School of Computing: Faculty Publications

The projected increases in World population and need for food have recently motivated adoption of information technology solutions in crop fields within precision agriculture approaches. Internet Of Underground Things (IOUT), which consists of sensors and communication devices, partly or completely buried underground for real-time soil sensing and monitoring, emerge from this need. This new paradigm facilitates seamless integration of underground sensors, machinery, and irrigation systems with the complex social network of growers, agronomists, crop consultants, and advisors. In this paper, state-of-the-art communication architectures are reviewed, and underlying sensing technology and communication mechanisms for IOUT are presented. Moreover, recent advances in …

Recent Ecological Change In Ancient Lakes, Stephanie E. Hampton, Suzanne Mcgowan, Ted Ozersky, Salvatore G. P. Virdis, Tuong Thuy Vu, Trisha L. Spanbauer, Benjamin M. Kraemer, George Swann, Anson W. Mackay, Stephen M. Powers, Michael F. Meyer, Stephanie G. Labou, Catherine M. O'Reilly, Morgan Dicarlo, Aaron W. E. Galloway, Sherilyn C. Fritz

Department of Earth and Atmospheric Sciences: Faculty Publications

Ancient lakes are among the best archivists of past environmental change, having experienced more than one full glacial cycle, a wide range of climatic conditions, tectonic events, and long association with human settlements. These lakes not only record long histories of environmental variation and human activity in their sediments, but also harbor very high levels of biodiversity and endemism. Yet, ancient lakes are faced with a familiar suite of anthropogenic threats, which may degrade the unusual properties that make them especially valuable to science and society. In all ancient lakes for which data exist, significant warming of surface waters has …

Role Of Whole Grains Versus Fruits And Vegetables In Reducing Subclinical Inflammation And Promoting Gastrointestinal Health In Individuals Affected By Overweight And Obesity: A Randomized Controlled Trial, Julianne C. Kopf, Mallory J. Suhr, Jennifer L. Clarke, Seong-Il Eyun, Jean-Jack M. Riethoven, Amanda E. Ramer-Tait, Devin J. Rose

Department of Food Science and Technology: Faculty Publications

Background: Whole grains (WG) and fruits and vegetables (FV) have been shown to reduce the risk of metabolic disease, possibly via modulation of the gut microbiota. The purpose of this study was to determine the impact of increasing intake of either WG or FV on inflammatory markers and gut microbiota composition.

Methods: A randomized parallel arm feeding trial was completed on forty-nine subjects with overweight or obesity and low intakes of FV and WG. Individuals were randomized into three groups (3 servings/d provided): WG, FV, and a control (refined grains). Stool and blood samples were collected at the beginning of …

Investigating Colonization Of The Healthy Adult Gastrointestinal Tract By Fungi, Thomas A. Auchtung, Tatiana Y. Fofanova, Christopher J. Stewart, Andrea K. Nash, Matthew C. Wong, Jonathan R. Gesell, Jennifer M. Auchtung, Nadim J. Ajami, Joseph F. Petrosino

Department of Food Science and Technology: Faculty Publications

A wide diversity of fungi have been detected in the human gastrointestinal (GI) tract with the potential to provide or influence important functions. However, many of the fungi most commonly detected in stool samples are also present in food or the oral cavity. Therefore, to recognize which gut fungi are likely to have a sustained influence on human health, there is a need to separate transient members of the GI tract from true colonizers. To identify colonizing fungi, the eukaryotic rRNA operon’s second internal transcribed spacer (ITS2) was sequenced from the stool, saliva, and food of healthy adults following consumption …

Metacognitive Theories Revisited, David Moshman

Department of Educational Psychology: Faculty Publications

“Metacognitive theories,” an article Gregg Schraw and I published in Educational Psychology Review in 1995, has been cited in over a thousand scholarly publications. In this follow-up, dedicated to Gregg and written after his recent death, I provide a brief overview of our 1995 article and then reflect on it in four ways. First, I consider the development of the concept of metacognition prior to 1995, including its emergence and use in previous writings by each co-author. Then, I turn to the collaboration itself, including the interplay of complementary conceptions and the construction of new ideas. Third, I consider the …

Clean Low-Biomass Procedures And Their Application To Ancient Ice Core Microorganisms, Zhi-Ping Zhong, Natalie E. Solonenko, Maria C. Gazitua, Donald V. Kenny, Ellen Mosley-Thompson, Virginia I. Rich, James L. Van Etten, Lonnie G. Thompson, Matthew B. Sullivan

Department of Plant Pathology: Faculty Publications

Microorganisms in glacier ice provide tens to hundreds of thousands of years archive for a changing climate and microbial responses to it. Analyzing ancient ice is impeded by technical issues, including limited ice, low biomass, and contamination. While many approaches have been evaluated and advanced to remove contaminants on ice core surfaces, few studies leverage modern sequencing to establish in silico decontamination protocols for glacier ice. Here we sought to apply such “clean” sampling techniques with in silico decontamination approaches used elsewhere to investigate microorganisms archived in ice at ~41 (D41, ~20,000 years) and ~49 m (D49, ~30,000 years) depth …

Whole Genome Sequencing Of Moraxella Bovoculi Reveals High Genetic Diversity And Evidence For Interspecies Recombination At Multiple Loci, Aaron M. Dickey, Gennie Schuller, John D. Loy, Michael L. Clawson

School of Veterinary and Biomedical Sciences: Faculty Publications

Moraxella bovoculi is frequently cultured from the ocular secretions and conjunctiva of cattle with Infectious Bovine Keratoconjunctivitis (IBK). Previous work has shown that single nucleotide polymorphism (SNP) diversity in this species is quite high with 81,284 SNPs identified in eight genomes representing two distinct genotypes isolated from IBK affected eyes (genotype 1) and the nasopharynx of cattle without clinical IBK signs (genotype 2), respectively. The goals of this study were to identify SNPs from a collection of geographically diverse and epidemiologically unlinked M. bovoculi strains from the eyes of IBK positive cattle (n = 183) and another from the eyes …

Absorptive Capacity In Rural Schools: Bending Not Breaking During Disruptive Innovation Implementation, Sarah J. Zuckerman, Kristen Campbell Wilcox, Kathryn S. Schiller, Francesca T. Durand

Department of Educational Administration: Faculty Publications

Rural schools have repeatedly been subjected to standardizing state and federal education policies that seek to minimize variance in instructional systems and increase the number of college- and career-ready graduates. The Race to the Top policy agenda combined standards-based and accountability-based reforms to meet these objectives and once again subjected rural schools to innovations from outside experts. This qualitative study uses four instrumental cases of rural schools to understand: 1) leadership strategies, and 2) mechanisms and processes of alignment, which allowed schools to maintain high levels of student performance in the face of disruptive policy innovations. The fi ndings of …