Digital Commons Network^™

The Mayaarch3d Project: A 3d Webgis For Analyzing Ancient Architecture And Landscapes, Jennifer Von Schwerin, Heather Richards-Rissetto, Fabio Remondino, Giorgio Agugario, Gabrio Girardi

Department of Anthropology: Faculty Publications

There is a need in the humanities for a 3D WebGIS with analytical tools that allow researchers to analyze 3D models linked to spatially referenced data. Geographic Information Systems (GIS) allow for complex spatial analysis of 2.5D data. For example, they offer bird’s eye views of landscapes with extruded building footprints, but one cannot ‘get on the ground’ and interact with true 3D models from a pedestrian perspective. Meanwhile, 3D models and virtual environments visualize data in 3D space, but analytical tools are simple rotation or lighting effects. The MayaArch3D Project is developing a 3D WebGIS—called QueryArch3D—to allow these two …

Phenology-Assisted Classification Of C3 And C4 Grasses In The U.S. Great Plains And Their Climate Dependency With Modis Time Series, Cuizhen Wang, E. Raymond Hunt Jr., Li Zhang, Huadong Guo

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Grassland ecosystems in the North America are primarily composed of C3 and C4 plant functional types (PFTs) that have different responses to the changing climate. Knowledge of their spatial distributions and temporal variations helps us better understand the ecological functions and climate dependencies of grasslands. This study used the 500-m MODIS surface reflectance products (MOD09A1) from 2000 to 2009 to extract NDVI time series of C3 and C4 grass PFTs in different floristic regions (tallgrass, shortgrass, and mixed-grass prairies.) A set of phenology metrics, including Start of Season, End of Season, Season Length, Peak NDVI, Peak Date, andΣNDVI, were found …

Evaluation Of The Efficacy Of 1-Octen-3-Ol And Carbon Dioxide Chemoattractants With Mosquitoes And Bloodmeal Analysis Of Culex Mosquito Spp. In Lancaster County, Nebraska, Julianne N. Matczyszyn

Department of Entomology: Dissertations, Theses, and Student Research

The purpose of mosquito-borne disease surveillance is to assess the risk of pathogen transmission by assessing mosquito populations and the prevalence of disease pathogens in those populations. West Nile virus (WNV) is an important mosquito-borne virus in Nebraska, and can be transmitted by several mosquito species found in Lancaster County, Nebraska, including Culex pipiens L., Culex salinarius Coquillett, Culex restuans Theobald, Culex tarsalis Coquillett, Culex territans Walker, and Culex erraticus Dyar & Knab. These species are ornithophilic, yet many studies indicate a shift in host feeding to mammalian in late summer months. One-octen-3-ol (octenol) can be isolated …

Characterization Of The 2012 Highly Pathogenic Avian Influenza H7n3 Virus Isolated From Poultry In An Outbreak In Mexico: Pathobiology And Vaccine Protection, Darrell R. Kapczynski, Mary Pantin-Jackwood, Sofia G. Guzman, Yadira Ricardez, Erica Spackman, Kateri Bertran, David L. Suarez, David E. Swayne

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

In June of 2012, an H7N3 highly pathogenic avian influenza (HPAI) virus was identified as the cause of a severe disease outbreak in commercial laying chicken farms in Mexico. The purpose of this study was to characterize the Mexican 2012 H7N3 HPAI virus (A/chicken/Jalisco/CPA1/2012) and determine the protection against the virus conferred by different H7 inactivated vaccines in chickens. Both adult and young chickens intranasally inoculated with the virus became infected and died at between 2 and 4 days postinoculation (p.i.). High virus titers and viral replication in many tissues were demonstrated at 2 days p.i. in infected birds. The …

The Community College Baccalaureate: A Mixed Methods Study Of Implementation And Best Practices, Stan E. Essink

Department of Educational Administration: Dissertations, Theses, and Student Research

Community colleges have a number of missions ranging from developmental education through academic transfer. They are obligated to provide higher education opportunities in a manner that is affordable, accessible, and adaptable to the changing needs of their constituents. As the mission of community colleges continues to evolve, several states have interpreted this mission to include baccalaureate programming.

This study employed a mixed methods approach to understanding the best practices of implementing and offering bachelor’s degrees through community colleges. The objectives of the research were to determine the influences affecting implementation of bachelor’s degrees, to examine resulting institutional change, and to …

Railroads And Coal: Resource Extraction In Indian Territory, 1866–1907, Robert J. Voss

Department of History: Dissertations, Theses, and Student Research

This dissertation examines the history of the interaction of railroads and coal during the end of the nineteenth century in what is today eastern Oklahoma. The Indian territory presented complex opportunities and challenges for railroad developers, coal operators, miners, railroad workers, and Native Americans. Using primary sources, such as published and unpublished accounts of both prominent and typical Native Americans and Euro-Americans, congressional debates, railroad company annual reports, railroad company correspondence, account books, treaties, court cases, and maps, this dissertation explores the process of railroad and coal company incursion in the region and the conflicts that resulted. All participants in …

A Matter Of Regionalism: Remembering Brandon Teena And Willa Cather At The Nebraska History Museum, Carly S. Woods, Joshua P. Ewalt, Sara J. Baker

Department of Communication Studies: Faculty Publications

In 2010–2011, the Nebraska History Museum featured two temporary exhibits: “We the People: the Nebraskan Viewpoint” and “Willa Cather: A Matter of Appearances.” We argue the public memories of Brandon Teena and Willa Cather contained in the exhibits are distanced from regional politics when articulated alongside the nostalgic regionalist rhetoric of the Nebraska History Museum. Specifically, both exhibits not only discipline the memory of trans* performance within problematic material and symbolic contexts, but also place these memories within a rhetoric of regional optimism that has critical consequences for restricting counter-public formation. In performing this reading, the essay argues that critical …

Remote Sensing Of Green Leaf Area Index In Maize And Soybean: From Close-Range To Satellite, Anthony L. Nguy-Robertson

School of Natural Resources: Dissertations, Theses, and Student Research

This dissertation seeks to explore alternative methodologies for estimating green leaf area index (LAI) and crop developmental stages. Specifically this research [1] developed an approach for creating a Moderate Resolution Imaging Spectroradiometer (MODIS) high spatial resolution product for estimating green LAI on the base of data collected using two different close-range sensors. It was determined that the vegetation indices (VIs) Wide Dynamic Range Vegetation Index (WDRVI) and Enhanced Vegetation Index 2 (EVI2) were capable of accurate estimation of green LAI from MODIS 250 m data using models developed from hyperspectral (RMSE < 0.69 m² m^-2; CV < 33%) or multispectral sensors (RMSE < 0.69 m² m^-2; …

Internet-Based Public Participation Gis In Environmental Management, Tiantian Liu

Community and Regional Planning Program: Theses

Environmental problems are among the most urgent and significant issues in contemporary society and have attracted increasing attention all around the world. How to deal with the interaction between human and natural environment and achieve sustainable development is the task of environmental management. With the development of the democratic process, participatory management and planning show incomparable advantages in the decision making process. How to facilitate public participation in environmental management is the research endeavor of this thesis. With the development of the Internet and technology, Internet-based PPGIS becomes an affordable and accessible GIS tool for public engagement. This thesis uses …

Reviewing Models Of Land Availability And Dynamics For Biofuel Crops In The United States And The European Union, Ruopu Li, Nicola Di Virgilio, Qingfeng Guan, Song Feng, Goetz M. Richter

School of Natural Resources: Faculty Publications

The biofuel-related land use in the USA and the EU has significantly expanded during the last decade; models have been used to estimate land availability and demand in these regions. This paper provides an overview of different land-use modeling practices applicable to first- and second-generation biofuels. We review the importance of different land categories for biofuels, modeling approaches (top-down/bottom-up) and their integration, data availability for calibration and validation, model scale, and uncertainty. Possible future changes of biofuel land use and research gaps and limitations are synthesized. Key issues are the lack of data for independent validation and the need for …

Identification Of Species Of Botryosphaeriaceae Causing Bot Gummosis In Citrus In California, A.O. Adesemoye, J.S. Mayorquin, D.H. Wang, M. Twizeyimana, S.C. Lynch, Akif Eskalen

Department of Plant Pathology: Faculty Publications

Members of the Botryosphaeriaceae family are known to cause Bot gummosis on many woody plants worldwide. To identify pathogens associated with Bot gummosis on citrus in California, scion and rootstock samples were collected in 2010 and 2011 from five citrusgrowing counties in California. Symptoms observed on citrus included branch cankers, dieback, and gumming. Various fungal species were recovered from necrotic tissues of branch canker and rootstock samples. Species were identified morphologically and by phylogenetic comparison as ‘Eureka’ lemon, ‘Valencia’, ‘Washington Navel’, ‘Fukumoto’, grapefruit, ‘Satsuma’, and ‘Meyer’ lemon. Species were identified morphologically and by phylogenetic comparison of the complete sequence of …

Droughtscape, Summer 2013, National Drought Mitigation Center

DroughtScape: Quarterly Newsletter of the National Drought Mitigation Center (2007–2023)

Contents

Director’s report

July 25 webinar: Drought management database, NIDIS update

Republican River Basin workshops July 31, August 1

Summer climate outlook, spring summary

Spring impacts: wildfire, water, agriculture and business

Data help managers assess Nebraska groundwater declines after drought of 2012

Tadesse helps Mexico with Veg-DRI concept

Visiting scholar explores remote sensing of drought in forests

U.S. Drought Monitor Forum photo recap, details online

Workshop helps New Mexico ranchers cope with drought

Alabama’s new drought plan

National Drought Forum report

Drought Impacts Community of Practice report

Great Plains Research, 23-2 Fall 2013, Editorial Matter, Richard Edwards, Peter Longo

Great Plains Research: A Journal of Natural and Social Sciences (through 2013)

Masthead

Contents

Volume Introduction, by Richard Edwards & Peter Longo

Instructions to authors

Review Of Janine Barchas, Matters Of Fact In Jane Austen: History, Location, And Celebrity, Laura White

Department of English: Faculty Publications

Janine Barchas’s thought-provoking study of Austen’s naming practices unearths a wealth of historical antecedents for Austen’s characters and posits an Austen whose gamesmanship with the names of persons and places rivals the knowingness and playfulness of James Joyce. In earlier decades, such a highly ambitious and wide-reaching work could not have been accomplished except through protracted antiquarian research. Web scholarship, however, has made it possible for Barchas to uncover in a relatively short time a remarkable array of the many interconnected historical figures bearing such names as Wentworth, Darcy, Vernon, Ferrars, Allen, and Dashwood whose heroic exploits, political machinations, tragic …

Ectoparasites Of The Virginia Opossum (Didelphis Virginiana), Raccoon (Procyon Lotor), And Striped Skunk (Mephitis Mephitis) From Keith County, Nebraska, Lance A. Durden, Dennis J. Richardson

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

Six Virginia opossums (Didelphis virginiana), nine raccoons (Procyon lotor) and one striped skunk (Mephitis mephitis) collected from Keith County Nebraska were examined for ectoparasites. All three host species were parasitized by adults of the American dog tick, Dermacentor variabilis. Opossums were also parasitized by the flea Pulex simulans and the tiny fur mite Didelphilichus serri­fer; the latter species represents a new state record for Nebraska. Raccoons were also parasitized by P. simulans and by the lago­morph-associated flea Euhoplopsyllus glacialis affinis, whereas the skunk was also parasitized by the chewing louse Neotrichodectes …

Transforming The Teaching Of Geoscience And Sustainability, David Gosselin, Cathy Manduca, Timothy J. Bralower, David Mogk

School of Natural Resources: Faculty Publications

The geosciences have an important role to play in addressing whether humans can live sustainably on Earth. From water to energy, from climate change to natural hazards, geoscience is central to solving a wide range of problems.

Two projects funded by the National Science Foundation (NSF) support faculty in incorporating aspects of sustainability in their teaching: the Interdisciplinary Teaching of Geoscience for a Sustainable Future ( InTeGrate) Center in the Geosciences and the On the Cutting Edge Faculty Development Program in the Geosciences. The former is funded by NSF’s Science Technology, Engineering, and Mathematics (STEM) Faculty Development Program, and the …

The Junco Called Cassiar, Rick Wright

Nebraska Bird Review

A well-marked male Cassiar Junco is subtly distinctive. In its overall grayness, the bird closely recalls a Slate-colored Junco, but the darkness of the head, breast, and nape approaches that of a male Oregon Junco, creating a more striking contrast between the "hood" and the rest of the upperparts than is visible in any but the very blackest of male Slate-coloreds. More significant than the colors themselves is their distribution: the blackish nape is sharply set off from the grayer or brownish back, and the dark of the breast meets the paler gray of the flank and the white of …

Ggmap: Spatial Visualization With Ggplot2, David Kahle, Hadley Wickham

The R Journal

In spatial statistics the ability to visualize data and models super imposed with their basic social landmarks and geographic context is in valuable. ggmap is a new tool which enables such visualization by combining the spatial information of static maps from Google Maps,Open Street Map, Stamen Maps or Cloud Made Maps with the layered grammar of graphics implementation of ggplot2. In addition, several new utility functions are introduced which allow the user to access the Google Geocoding, Distance Matrix, and Directions APIs. The result is an easy, consistent and modular frame work for spatial graphics with several convenient tools …

The Missing Piece: Drought Impacts Monitoring Report From A Workshop In Tucson, Az March 5-6, 2013, Kirsten Lackstrom, Amanda Brennan, Daniel Ferguson, Mike Crimmins, Lisa Darby, Kirstin Dow, Keith Ingram, Alison Meadow, Henry Reges, Mark Shafer, Kelly Helm Smith

National Drought Mitigation Center: Faculty Publications

Based on a shared interest to better understand the impacts of drought and the potential utility of using drought impacts reporting as a tool for monitoring conditions, researchers from the Carolinas RISA (Dow, Lackstrom, and Brennan), the Climate Assessment for the Southwest (Crimmins and Ferguson), and the Southwest Climate Science Center (Meadow) decided to convene a workshop in Tucson in March 2013. The primary goal was to assemble a small group of university and agency scientists involved with drought impacts monitoring to discuss opportunities and barriers associated with drought impacts reporting, recommend best practices for implementing a drought impacts reporting …

Changes On Cran, Kurt Hornik, Achim Zeileis

The R Journal

New CRAN task views

New packages in CRAN task views

New contributed packages

Other changes

A Natural Resource Condition Assessment For Sequoia And Kings Canyon National Parks, Appendix 16 - Bats, Alice Chung-Maccoubrey

United States National Park Service: Publications

Scope of Analysis

North American bats are highly unique animals that have historically been overlooked by land managers and misunderstood by the public. Bats are unique as the only true flying mammals and due to their exceptionally long lives (5-15 years) and unusually low reproductive rates (typically one young per year) for their small size. Most North American bat species are insectivorous, serve as the primary predators of nocturnal insects, and can consume up to one-third of their weight in insects per night. Thus, bats play a role in regulating insect populations, insect-related ecological processes, and nutrient redistribution and cycling …

Zhao Xiao-Sheng’A Tai Chi Reflection: His Innovative Tai Chi Compositional System And Its Execution In Tai Chi For Solo Piano, Feifei Jiang

Glenn Korff School of Music: Dissertations, Theses, Student Creative Work, and Performances

Zhao Xiao-sheng is one of the most respected living Chinese composers, whose innovative compositions hold a place of prominence in contemporary Chinese music. Zhao, a pianist himself, naturally has written a number of works for solo piano which can be divided into three major compositional periods. During the 1970’s, he concentrated mostly on arranging the works of other composers. In the 1980’s, Zhao began to explore the combination of contemporary Western idioms with more traditional Chinese music. Since the 1990’s, he has focused his activities on creating a new kind of Chinese musical expression—a sort of Chinese-style serialism called the …

Lake Kumphawapi — An Archive Of Holocene Paleoenvironmental And Paleoclimatic Changes In Northeast Thailand, Sakonvan Chawchai, A. Chabangborn, M. Kylander, L. Löwemark, C.-M. Mörth, M. Blaauw, W. Klubseang, P. J. Reimer, Sherilyn C. Fritz, B. Wohlfarth

Department of Earth and Atmospheric Sciences: Faculty Publications

The long-term climatic and environmental history of Southeast Asia, and of Thailand in particular, is still fragmentary. Here we present a new ¹⁴C-dated, multi-proxy sediment record (TOC, C/N, CNS isotopes, Si, Zr, K, Ti, Rb, Ca elemental data, biogenic silica) for Lake Kumphawapi, the second largest natural lake in northeast Thailand. The data set provides a reconstruction of changes in lake status, groundwater fluctuations, and catchment run-off during the Holocene. A comparison of multiple sediment sequences and their proxies suggests that the summer monsoon was stronger between c. 9800 and 7000 cal yr BP. Lake status and water level …

Water And The Architect: Architecture As Decentralized Water Management, Daniel A. Williamson

Architecture Masters of Science Program: Theses

Water is the essence of life, a material, a resource, a commodity. It is volatile, fragile, devastating, nourishing and is ultimately spatial. The design of how water spatially inhabits, flows, and interacts with our built life has seen many forms, functions, systems, failures and successes. Over the course of history those who have had the opportunity to define our relationship with water has spread across numerous disciplines, and touched many professions. The architectural relationship with water has seen an unfortunate bifurcation over the past two centuries. It is this separation of architecture from adequately and actively engaging water management, primarily …

Who You Know And How To Go: The Impact Of Social Capital On Higher Education Access For Black Males, Morgan E. St. John

Department of Educational Administration: Dissertations, Theses, and Student Research

This qualitative case study explores the relationship between social capital, or the social networks in a young man’s life, and access into and persistence in higher education for a group of six Black, male, upperclassmen students at Heartland University. Heartland University is a predominantly White, four-year institution in the Midwest region of the United States. The literature review discusses reasons for the steadily declining rate of males choosing to pursue a college education, particularly young Black men, whom have been referred to as an “endangered species” in society (Johnson, Farrell, & Stoloff, 2000). Providing a framework of social capital theory, …

Effect Of Social Media On Crowdfunding Project Results, Alexey Moisseyev

College of Business: Dissertations, Theses, and Student Research

Crowdfunding is a form of collaborative social media. Even though crowdfunding can function without social media, this phenomenon has developed greatly with the advance of social media. The studies in entrepreneurship and finance established connections between startup projects and social ties. However, the impact of social media on crowdfunding is still lightly studied in academic literature.

The purpose of this thesis is to define the influence of social media on crowdfunding. In particular, this research studies the connections between social media assets such as the social media followers and the social media seals of approval and crowdfunding results such as …

Climate Change Tipping Points: A Point Of No Return?, Elise Lequire

Joint Fire Science Program Digests

Summer 2012 saw records fall for intensity of drought and number, size, and cost of wildfires in the Central and Western United States, and the climate forecast calls for more of the same in the near and distant future. When wildfire breaks out, emergency responders decide their immediate strategy based on past experience and quick judgment calls. But in the long term, land managers need to plan for a warmer climate on a time scale of decades, or even a century or more, to better reflect the life span of trees and forests. Studies supported by the Joint Fire Science …

Missouri National Recreational River 2012 Resource Brief, Isabel W. Ashton, Michael Prowatzke, Kara Paintner

United States National Park Service: Publications

Includes brief information on plant community monitoring, water quality monitoring, and weather and climate monitoring for the Missouri National Recreational River in the United States for 2012.

Management Of Invasive Garlic Mustard Populations, Jillian M. Schneider

Department of Environmental Studies: Undergraduate Student Theses

The purpose of this study was to investigate current practices regarding known Alliaria petiolata (garlic mustard) populations in Lincoln, Nebraska and to determine the most effective management techniques in controlling garlic mustard invasions. A.petiolata is a shade tolerant, cool season growth plant invasive to North America. It is an allelopathic biennial whose established first year rosettes overwinter giving garlic mustard a head start on native annuals allowing it to outcompete indigenous species in the understory of woodland areas. Information regarding the histories and extent of invasions, management methods, and impacts on ecosystems was gathered from personnel at Fontenelle Forest Nature …

Agricultural Development In The Northern Savannah Of Ghana, Tara N. Wood

Doctor of Plant Health Program: Dissertations and Student Research

Since declaring independence in 1957, the Republic of Ghana has become a stable constitutional democracy. Ghana’s economy has grown substantially over the past decade, yet remains primarily agrarian, accounting for 50% of the total employment and 25% of the country’s Gross Domestic Product. Smallholder rain-fed farming using rudimentary technologies dominates the agricultural sector accounting for 80% of total agricultural production. Approximately 90% of smallholder farms are less than two hectares in size, and produce a diversity of crops. The major crops cultivated in Ghana include numerous cereal, root and tuber, leguminous, fruit, vegetable and industrial crops. Maize is the most …