Digital Commons Network^™

Developing A Department Of Transportation Winter Severity Index, Curtis L. Walker, Dylan Steinkruger, Pouya Gholizadeh, Sogand Hasanzedah, Mark Anderson, Behzad Esmaeili

Department of Earth and Atmospheric Sciences: Faculty Publications

Adverse weather conditions are responsible for millions of vehicular crashes, thousands of deaths, and billions of dollars per year in economic and congestion costs. Many transportation agencies utilize a performance or mobility metric to assess how well they maintain road access; however, there is only limited consideration of meteorological impacts to the success of their operations. This research develops the Nebraska winter severity index (NEWINS), which is a daily event-driven index derived for the Nebraska Department of Transportation (NDOT). The NEWINS includes a categorical storm classification framework to capture atmospheric conditions and possible road impacts across diverse spatial regions of …

Novel Information On The Morphology, Phylogeny And Distribution Of Camallanid Mematodes From Marine And Freshwater Hosts In South Africa, Including The Description Of Camallanus Sodwanaensis N. Sp., Roman Svitin, Marliese Truter, Olena Kudlai, Nico J. Smit, Louis Du Preez

Harold W. Manter Laboratory of Parasitology: Library Materials

Four species of previously known nematodes from the family Camallanidae were found from different hosts in South Africa: Batrachocamallanus xenopodis from the frog Xenopus muelleri, Paracamallanus cyathopharynx, and Procamallanus pseudolaeviconchus from the catfish Clarias gariepinus and Spirocamallanus daleneae from the catfish Synodontis zambezensis. In the material collected from various marine fishes, several specimens of nematodes from the genus Camallanus clearly differed from all previously known species. Based on morphological differences these specimens are assigned to a new species, C. sodwanaensis. Molecular data of 18S and 28S rDNA and COI sequences are provided for the collected species …

Insulating Tunneling Contact For Efficient And Stable Perovskite Solar Cells, Jinsong Huang, Xiaopeng Zheng, Qi Wang, Yang Bai, Qingfeng Dong

Department of Mechanical and Materials Engineering: Faculty Publications

Perovskite-based photoactive devices, such as solar cells, include an insulating tunneling layer inserted between the perovskite photoactive material and the electron collection layer to reduce charge recombination and concomitantly provide water resistant properties to the device.

Beyond The Toolpath: Site-Specific Melt Pool Size Control Enables Printing Of Extra-Toolpath Geometry In Laser Wire-Based Directed Energy Deposition, Brian T. Gibson, Bradley S. Richardson, Tayler W. Undermann, Lonnie J. Love

Department of Mechanical and Materials Engineering: Faculty Publications

A variety of techniques have been utilized in metal additive manufacturing (AM) for melt pool size management, including modeling and feed-forward approaches. In a few cases, closed-loop control has been demonstrated. In this research, closed-loop melt pool size control for large-scale, laser wire-based directed energy deposition is demonstrated with a novel modification, i.e., site-specific changes to the controller setpoint were commanded at trigger points, the locations of which were generated by the projection of a secondary geometry onto the primary three-dimensional (3D) printed component geometry. The present work shows that, through this technique, it is possible to print a specific …

Disposable Fluidic Self-Propelling Robot For Traversing A Tubular Passage, Carl Nelson, Benjamin Terry, Abolfazl Pourghodrat, Hossein Dehghani, Dmitry Oleynikov, Prithviraj Dasgupta

Department of Mechanical and Materials Engineering: Faculty Publications

A probe for traversing a tubular passage includes an introducer to be supported at an entrance to the tubular passage. The probe also includes a probe tip to traverse the tubular passage, and a tube with an inflatable tube segment. In some embodiments, the inflatable tube segment is storable in the probe tip. The inflatable tube segment is configured to be inflated to push the probe tip away from the introducer toward an end on the tubular passage. In some embodiments, the probe includes a sealing mechanism, whre the sealing mechanism can be positioned between the inflatable tube segment of …

Review Of Clara Guillén Marín. Migrants In Contemporary Spanish Film. Routledge, 2018., Alfonso Bartolomé

Spanish Language and Literature Papers

The focus of this volume is immigration, currently one of the most relevant topics of Spanish society. Clara Guillén Marín investigates the reality of immigration in Spain, supporting her research with the works of Isolina Ballesteros, Isabel Santaolalla, and Daniela Flesler, in addition to others on the cutting edge of defining the “new social reality” (Guillén Marín 1). She shows the impacts of immigration and the resultant changes to aspects of the Spanish economy, society, and culture. In her research, she includes six films: three documentaries and three fictional films. These six artifacts of culture, if you will, shine a …

Memory, Language, And Healing, Isabel Velázquez

Spanish Language and Literature Papers

One morning on a spring day not unlike the one during which I write these lines, Dr. Marie Chantal Kalisa came into my office and gifted me with a word. It wasn't a strange occurrence, this. As office neighbors, friends, and fellow members of the order of the culturally dislocated, we were engaging in just an ordinary part of our ongoing conversation on language, memory, cultural (non)transmission, and the many intimate losses and transformations that come as a by-product of geographic displacement. A lovely word it was, its Kirundi vowels bright, shiny, sweet to my ears. A tiny jewel wrapped …

WomenʼS Friendship In Exile: Healing In The Epistolary Correspondence Between Zenobia Camprubí And Pilar De Zubiaurre., Iker Gonzalez-Allende

Spanish Language and Literature Papers

The epistolary correspondence between the Spanish intellectuals Zenobia Camprubi (1887-1956) and Pilar de Zubiaurre (1884- 1970) from October 1938 to August 1956 reveals a long friendship that began in Madrid in the 1910S and continued during the exile that they, as supporters of the democratic Second Republic, both suffered after the Spanish Civil War (1936-1939) and the victory of dictator Francisco Franco, who ruled Spain from 1939 until his death in 1975. During exile Camprubi writes to Zubiaurre from the United States, Cuba, and Puerto Rico, while Zubiaurre responds from Mexico, where she lived the last thirty years of her …

Examining Stigma Associated With Firefighters Seeking Social Support After Experiencing A Traumatic Event, John Richard Tormos

Theses and Dissertations

This applied dissertation was designed to examine stigma associated with firefighters seeking social support after experiencing a traumatic event. This quantitative study employed a survey approach with a cross-sectional design. The researcher self-selected 26 active career firefighters from a medium-sized fire department located in the southeastern United States to participate in the study. Firefighters responded to an array of emergency incidents and were repeatedly exposed to traumatic events. The Secondary Trauma Exposure Scale was employed to answer the first research question: What are the most frequent types of traumatic events that firefighters have experienced? The findings revealed that all of …

A Doubly Nonlocal Laplace Operator And Its Connection To The Classical Laplacian, Petronela Radu, Kelseys Wells

Department of Mathematics: Faculty Publications

In this paper, motivated by the state-based peridynamic frame- work, we introduce a new nonlocal Laplacian that exhibits double nonlocality through the use of iterated integral operators. The operator introduces addi- tional degrees of exibility that can allow for better representation of physical phenomena at different scales and in materials with different properties. We study mathematical properties of this state-based Laplacian, including connec- tions with other nonlocal and local counterparts. Finally, we obtain explicit rates of convergence for this doubly nonlocal operator to the classical Laplacian as the radii for the horizons of interaction kernels shrink to zero.

The Promising Viral Threat To Bacterial Resistance: The Uncertain Patentability Of Phage Therapeutics And The Necessity Of Alternative Incentives, Kelly Todd

Duke Law Journal

Bacteriophages, or “phages,” are a category of highly adept and adaptable viruses that can infect and kill bacteria. With concerns over the burgeoning antibiotic-resistance crisis looming in recent years, scientists and policymakers have expressed a growing interest in developing novel treatments for bacterial infections that utilize bacteriophages. Because of the great expense associated with bringing a new drug to market, patents are usually considered the gold standard for incentivizing research and development in the pharmaceutical field. Absent such strong protection for a developer’s front end investment, pharmaceutical development remains financially risky and unattractive. Unfortunately, recent Supreme Court jurisprudence analyzing patentable …

Understanding Sexual Prejudice: The Role Of Political Ideology And Strategic Essentialism, Crystal L. Hoyt, Thekla Morgenroth, Jeni L. Burnette

Jepson School of Leadership Studies articles, book chapters and other publications

Despite the increased visibility and acceptance of the LGBTQ community, sexual minorities continue to face prejudice and discrimination in many domains. Past research has shown that this prejudice is more prevalent among those holding conservative political views. In two studies, we merge strategic essentialism and motivated ideology theoretical perspectives to empirically investigate the link between political orientation and sexual prejudice. More specifically, we examine how conservatives strategically use different forms of essentialism to support their views of gay individuals and their reactions to messages aimed at changing essentializing beliefs. In Study 1 (N = 220), we demonstrate that conservatives endorse …

Midas-Vt-Pre: Software To Generate 2d Finite Element Model Of Particle/Fiber Embedded Composites With Cohesive Zones, Keyvan Zare-Rami, Yong-Rak Kim

Department of Civil and Environmental Engineering: Faculty Publications

Studying the behavior of particle/fiber embedded composites has been a common and challenging problem in mechanics of materials area. Analysis of these materials can be effectively conducted by computational simulations such as finite element (FE) analyses. Creating a model that represents the actual microstructure of the composite is crucial to obtain a trustable result, but is often laborintensive. Microstructure Inelastic Damage Analysis Software (MIDAS) Virtual Tester Preprocessor (MIDAS-VT-Pre) was developed to facilitate construction of two-dimensional microstructure FE models of particle/fiber embedded composites. MIDAS-VT-Pre is able to insert automatically cohesive zone interface elements in the mesh structure in order to simulate …

Non-Temporal Point Cloud Analysis For Surface Damage In Civil Structures, Mohammad Ebrahim Mohammadi, Richard L. Wood, Christine E. Wittich

Department of Civil and Environmental Engineering: Faculty Publications

Assessment and evaluation of damage in civil infrastructure is most often conducted visually, despite its subjectivity and qualitative nature in locating and verifying damaged areas. This study aims to present a new workflow to analyze non-temporal point clouds to objectively identify surface damage, defects, cracks, and other anomalies based solely on geometric surface descriptors that are irrespective of point clouds’ underlying geometry. Non-temporal, in this case, refers to a single dataset, which is not relying on a change detection approach. The developed method utilizes vertex normal, surface variation, and curvature as three distinct surface descriptors to locate the likely damaged …

Midas-Vt-Pre: Software To Generate 2d Finite Element Model Of Particle/Fiber Embedded Composites With Cohesive Zones, Keyvan Zare-Rami, Yong-Rak Kim

Department of Civil and Environmental Engineering: Faculty Publications

Studying the behavior of particle/fiber embedded composites has been a common and challenging problem in mechanics of materials area. Analysis of these materials can be effectively conducted by computational simulations such as finite element (FE) analyses. Creating a model that represents the actual microstructure of the composite is crucial to obtain a trustable result, but is often labor- intensive. Microstructure Inelastic Damage Analysis Software (MIDAS) Virtual Tester Preprocessor (MIDAS-VT-Pre) was developed to facilitate construction of two-dimensional microstructure FE models of particle/fiber embedded composites. MIDAS-VT-Pre is able to insert automatically cohesive zone interface elements in the mesh structure in order to …

Systems And Methods For Construction Of Electrically Conductive Concrete Slab With Protection From Current Leakage, Christopher Tuan, Lim Nguyen

Department of Civil and Environmental Engineering: Faculty Publications

Systems and methods for a conductive concrete slab having protection against one or more of surface current, ground fault current, and current leakage. A method includes, but is not limited to, introducing an electrical insulation base layer to a ground surface; introducing a plurality of electrodes to the electrical insulation base layer; and casting conductive concrete over the plurality of electrodes and the electrical insulation base layer. An electrical insulation top layer can also be applied to mitigate one or more of surface current and ground fault current.

Manufactured Emergencies, Robert L. Tsai

Faculty Scholarship

Emergencies are presumed to be unusual affairs, but the United States has been in one state of emergency or another for the last forty years. That is a problem. The erosion of democratic norms has led to not simply the collapse of the traditional conceptual boundary between ordinary rule and emergency governance, but also the emergence of an even graver problem: the manufactured crisis. In an age characterized by extreme partisanship, institutional gridlock, and technological manipulation of information, it has become exceedingly easy and far more tempting for a President to invoke extraordinary power by ginning up exigencies. To reduce …

Consumer Actions And Attitudes Regarding Initiatives Directed Towards Sustainability: Assessing Gender And Generational Gaps, Sam Fullerton, Tammy Mccullough, David L. Moore

AMTP Proceedings 2019

A demographically and geographically representative sample of 1,243 adult residents of the United States provided input regarding 33 issues germane to both green marketing and green consumption. This diverse array of behaviors and opinions addressed both sides of the buyer-seller dyad. From the buyers’ perspective, respondents reported a high propensity to engage in recycling, donate used goods, and purchase products with a longer life expectancy. As for organizational actions, the respondents favored environmentally-friendly actions such as focusing on cleaner and more efficient energy alternatives. There was a strong belief that individuals can make a difference. Comparisons on the bases of …

Bridging The Gap Between Public Opinion Research And Consumer Marketing Research: Insights Into U.S. Shoppers Of Organic Foods, Marilena O. Vilceanu, Olivia Grasso, Kristine Johnson

AMTP Proceedings 2019

The primary goal of this study embraces Hughner and team’s (2007) directive to focus new research on the growing segment of occasional consumers of organic and natural foods, rather than limit the search for consumer insights to the small, elitist groups of deeply committed consumers. Research questions address the demographics, attitudinal, and behavioral characteristics that identify organic foods as a premium product. Primary recommendations for marketing practitioners include focusing on higher income consumers, especially married individuals, who live in highly populated areas; creating a pleasant shopping experience; promoting non-food related organic items, and investing in brand presence and salience.

Automatic Nonnutritive Suck Waveform Discrimination And Feature Extraction In Preterm Infants, Chunxiao Liao, Austin O. Rosner, Jill L. Maron, Dongli Song, Steven M. Barlow

School of Computing: Faculty Publications

Background and Objective: +e emergence of the nonnutritive suck (NNS) pattern in preterm infants reflects the integrity of the brain and is used by clinicians in the neonatal intensive care unit (NICU) to assess feeding readiness and oromotor development. A critical need exists for an integrated software platform that provides NNS signal preprocessing, adaptive waveform discrimination, feature detection, and batch processing of big data sets across multiple NICU sites. +us, the goal was to develop and describe a crossplatform graphical user interface (GUI) and terminal application known as NeoNNS for single and batch file time series and frequency-domain analyses of …

Enforcing Persistency For Battery - Backed Mobile Devices, Hao Luo, Hong Jiang, Lei Tian

School of Computing: Faculty Publications

In one implementation, a computer-implemented method can include receiving, at a driver running on a mobile computing device with a local power source, a command from an application for an allocation of volatile memory; allocating, by the driver, memory from a pool of volatile memory for the application; storing data in the allocated memory; detecting, by the driver, that a particular situation currently exists on the mobile computing device that will cause the data to be lost; and performing, by the driver, an operation with regard to the memory and the data that will cause the data to be preserved …

Peacock Motifs In Rig Vedic Hymns And Hungarian Folksongs, Peter Z. Revesz

School of Computing: Faculty Publications

Comparative musicology can link together the musical traditions of distant people. For example, Kodály found interesting melodic similarities between Hungarian and Mari folksongs. Although he found no melodic similarities between Hungarian and Indian folksongs, Kodály also believed that the peacock motif in Hungarian folksongs had an Indian origin. That would imply that texts with certain motifs are preserved even more than the melodies in folksongs. In this paper we show that it is indeed the case by describing a possible Rig Vedic origin of various Hungarian folksong texts with the peacock motif.

Using Data Mining Algorithms To Discover Regular Sound Changes Among Languages, Peter Revesz

School of Computing: Faculty Publications

This paper presents a method of using association rule data mining algorithms to discover regular sound changes among languages. The method presented has a great potential to facilitate linguistic studies aimed at identifying distantly related cognate languages. As an experimental example, this paper presents the application of the data mining method to the discovery of regular sound changes between the Hungarian and the Sumerian languages, which separated at least five thousand years ago when the Proto-Sumerian reached Mesopotamia. The data mining method discovered an important regular sound change between Hungarian word initial /f/ and Sumerian word initial /b/ phonemes.

Intercomparison Of Small Unmanned Aircraft System (Suas) Measurements For Atmospheric Science During The Lapse-Rate Campaign, Lindsay Barbieri, Stephan T. Kral, Sean C. C. Bailey, Amy E. Frazier, Jamey D. Jacob, Joachim Reuder, David Brus, Phillip B. Chilson, Christopher Crick, Carrick Detweiler, Abhiram Doddi, Jack Elston, Hosein Foroutan, Javier Gonzalez-Rocha, Brian R. Greene, Marcelo I. Guzman, Adam L. Houston, Ashraful Islam, Osku Kemppinen, Dale Lawrence, Elizabeth A. Pillar-Little, Shane D. Ross, Michael Sama, David G. Schmale Iii, Travis J. Schuyler, Ajay Shankar, Suzanne W. Smith, Sean Waugh, Cory Dixon, Steve Borenstein, Gijs De Boer

School of Computing: Faculty Publications

Small unmanned aircraft systems (sUAS) are rapidly transforming atmospheric research. With the advancement of the development and application of these systems, improving knowledge of best practices for accurate measurement is critical for achieving scientific goals. We present results from an intercomparison of atmospheric measurement data from the Lower Atmospheric Process Studies at Elevation—a Remotely piloted Aircraft Team Experiment (LAPSE-RATE) field campaign. We evaluate a total of 38 individual sUAS with 23 unique sensor and platform configurations using a meteorological tower for reference measurements. We assess precision, bias, and time response of sUAS measurements of temperature, humidity, pressure, wind speed, and …

Constructing Lumbersexuality: Marketing An Emergent Masculine Taste Regime, Mark A. Rademacher, Casey R. Kelly

Department of Communication Studies: Faculty Publications

This article examines the online retailer Huckberry.com as a singular, centralized authority responsible for marketing “lumbersexuality” as an emergent, gender-normative taste regime. As an evolution of the devalued hipster marketplace myth, analysis reveals Huckberry promotes an adaptable taste regime to its young, educated, urban, White male clientele that unites goods, meanings, and practices across multiple fields of consumption that reconnect indie consumption and taste with a fantasy of “authentic” masculinity. We argue that Huckberry offers men semiotic resources that merge the urban with the outdoors in a way that enables the enactment of a fraught though seemingly durable masculine identity …

Applied Tensional Analysis: Engaging Practitioners And The Constitutive Shift, Jennifer Mease (Also Peeksmease)

Department of Communication Studies: Faculty Publications

This article introduces applied tensional analysis as a methodological framework that integrates constitutive ontologies (that depict organizations as processes in constant states of emerging or becoming) with the applied need for practitioners to understand and navigate the everyday exigencies of their organizational experiences. Applied tensional analysis centers analysis on tensions as the key to understanding organizational becoming in contrast to approaches that assume organizations are stable entities and consequently focus on patterns, themes, or laws. The applied tensional analysis framework offers four analytical foci (context, tensions, enacted responses, and repertoires) organized into two loops (analytical and change) as guides for …

Applying Molecular Communication Theory To Multi-Scale Integrated Models Of Biological Pathways, Zahmeeth Sakkaff, Bige Deniz Unluturk, Massimiliano Pierobon

School of Computing: Faculty Publications

The natural communication ability of cells is explored in this paper by providing preliminary results in the estimation of the Mutual Information (MI) of signaling pathway communication channels. These results, based on an application of Molecular Communication (MC) and information theory concepts to multi-scale integrated Flux-Balance Analysis (iFBA) models are a first step to evaluate the potential of cells and their biochemical processes as a substrate for enabling engineered MC channels for the future internet of Bio-Nano Things.

Relations Between Young Adults’ Knowledge And Understanding, Experiences, And Information Behavior In Personal Finance Matters, Manuel Förster, Roland Happ, William Walstad

Department of Economics: Faculty Publications

Background: In Germany, general secondary education offers few opportunities for young adults to acquire knowledge and understanding of personal finance. Hence, apart from parents’ influence as role models, important influences on young adults’ financial knowledge and understanding likely include their personal experience with financial products and their behavior of informally seeking information about specific financial products.

Methods: In this paper, we investigate the relationships between these latter variables based on a sample of 1108 young adults from Germany, aged 17–25, beginning their studies in higher education. Knowledge and understanding of personal finance was assessed using the German adaptation of the …

Women In The Early Years Of The American Economic Association: A Membership Beyond The Professoriate Per Se, Ann Mari May, Robert W. Dimand

Department of Economics: Faculty Publications

The records in the archives of the American Economic Association (AEA) located in the David M. Rubenstein Rare Book and Manuscript Library, Duke University, offer us a unique window into the role of gender in the struggle of economists to gain status and authority and allow us to better understand the role of gender in the professionalization of economics. While not replete with information about female economists in the early years of the AEA, the records offer important clues as to the challenges facing women academics, shed light on the formation of the profession, and reveal the influence of the …

Ephemeral Gully Erosion Modeling And Surveying With Close-Range Digital Photogrammetry, M. A. Islam, C. Weerasekara, Y. Zhou, A. Y. Shesukov

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.