Digital Commons Network^™

Grids & Datums, Clifford J. Mugnier

Faculty Publications

No abstract provided.

Legal Systems And The Financing Of Working Capital, Michael Troilo, Brian Walkup, Masato Abe, Seulki Lee

Faculty Publications

This study builds on the existing law and finance literature by analyzing the impact of legal systems on both the level and the sourcing of working capital. We find that stronger rule of law results in lower levels of working capital, less sourcing from retained earnings, and more sourcing from banks. Firms in common-law regimes have lower levels of working capital and finance it from banks, while firms from civil-law environments rely on retained earnings and other financial institutions for sourcing. The impact of legal origin on both the level and the sourcing of working capital is mixed.

Past East Asian Monsoon Evolution Controlled By Paleogeography, Not Co2, Alex Farnsworth, Daniel J. Lunt, Stuart A. Robinson, Paul J. Valdes, William H.G. Roberts, Peter D. Clift, Paul Markwick, Tao Su, Neil Wrobel, Fran Bragg, Sarah Jane Kelland, Richard D. Pancost

Faculty Publications

Copyright © 2019 The Authors, The East Asian monsoon plays an integral role in human society, yet its geological history and controlling processes are poorly understood. Using a general circulation model and geological data, we explore the drivers controlling the evolution of the monsoon system over the past 150 million years. In contrast to previous work, we find that the monsoon is controlled primarily by changes in paleogeography, with little influence from atmospheric CO2. We associate increased precipitation since the Late Cretaceous with the gradual uplift of the Himalayan-Tibetan region, transitioning from an ITCZ-dominated monsoon to a sea breeze–dominated monsoon. …

Changes In Southeastern Usa Summer Precipitation Event Types Using Instrumental (1940-2018) And Tree-Ring (1790-2018) Data, T.J. Mitchell, P.A. Knapp, T.W. Patterson

Faculty Publications

We examined short- and long-term changes in precipitation event types using instrumental (1940–2018) and tree-ring (1790–2018) data from North Carolina, USA. We documented the amount and frequency of summer (July–September) precipitation events using daily weather station data. Stationary front precipitation (SFP) represented 71% of total summer rainfall and SFP and convective uplift combined (i.e., quasi-stationary precipitation, QSP) represented 87%. SFP (r = 0.52, p < 0.01) and QSP (r = 0.61, p < 0.01) precipitation reconstructions from a montane longleaf pine latewood chronology both recorded significant declines during 1940–2018, matching the instrumental record. Conversely, no significant change in either SFP or QSP occured during the full reconstruction indicating the instrumental decline was unmatched throughout 1790–1939. Our method demonstrates that variations in latewood growth can be attributed to specific precipitation event types and that the relative contribution of each event type can be quantified over a multi-century period.

Accumulation Over Evolutionary Time As A Major Cause Of Biodiversity Hotspots In Conifers, Mekala Sundaram, Michael J. Donoghue, Aljos Farjon, Denis Filer, Sarah Mathews, Walter Jetz, Andrew B. Leslie

Faculty Publications

© 2019 The Author(s) Published by the Royal Society. All rights reserved. Biodiversity hotspots are important for understanding how areas of high species richness form, but disentangling the processes that produce them is difficult. We combine geographical ranges, phylogenetic relationships and trait data for 606 conifer species in order to explore the mechanisms underlying richness hotspot formation. We identify eight richness hotspots that overlap known centres of plant endemism and diversity, and find that conifer richness hotspots occur in mountainous areas within broader regions of long-term climate stability. Conifer hotspots are not unique in their species composition, traits or phylogenetic …

Detecting Parasite Associations Within Multi-Species Host And Parasite Communities, Tad A. Dallas, Anna Liisa Laine, Otso Ovaskainen

Faculty Publications

© 2019 The Author(s) Published by the Royal Society. All rights reserved. Understanding the role of biotic interactions in shaping natural communities is a long-standing challenge in ecology. It is particularly pertinent to parasite communities sharing the same host communities and individuals, as the interactions among parasites—both competition and facilitation—may have far-reaching implications for parasite transmission and evolution. Aggregated parasite burdens may suggest that infected host individuals are either more prone to infection, or that infection by a parasite species facilitates another, leading to a positive parasite–parasite interaction. However, parasite species may also compete for host resources, leading to the …

Pacts 1.0: A Crowdsourced Reporting Standard For Paleoclimate Data, Kristine Delong

Faculty Publications

The progress of science is tied to the standardization of measurements, instruments, and data. This is especially true in the Big Data age, where analyzing large data volumes critically hinges on the data being standardized. Accordingly, the lack of community-sanctioned data standards in paleoclimatology has largely precluded the benefits of Big Data advances in the field. Building upon recent efforts to standardize the format and terminology of paleoclimate data, this article describes the Paleoclimate Community reporTing Standard (PaCTS), a crowdsourced reporting standard for such data. PaCTS captures which information should be included when reporting paleoclimate data, with the goal of …

Intensive Livestock Production Causing Antibiotic Pollution In The Yinma River Of Northeast China, Hanyu Ju, Sijia Li, Y. Jun Xu, Guangxin Zhang, Jiquan Zhang

Faculty Publications

Antibiotics are increasingly used in livestock production in rural China, raising concerns over pollution and health risk in countryside waterways. The Yinma River Basin in China's far northeast is an agriculture-dominated area mixed with a densely populated province capitol city, providing a suitable area for investigating the influence of a typical land use mix in Northeast China on riverine antibiotic levels and transport. In this study, we sampled water along the Yinma River from upstream to downstream in a wet and a dry season and analyzed the samples for two popularly used antibiotics, ciprofloxacin (CIP) and norfloxacin (NOR). The goal …

Response Of Water Resources To Future Climate Change In A High-Latitude River Basin, Peng Qi, Guangxin Zhang, Yi Jun Xu, Zhikun Xia, Ming Wang

Faculty Publications

Global water resources are affected by climate change as never before. However, it is still unclear how water resources in high latitudes respond to climate change. In this study, the water resource data for 2021-2050 in the Naoli River Basin, a high-latitude basin in China, are calculated by using the SWAT-Modflow Model and future climate scenarios RCP4.5 and RCP8.5. The results show a decreasing trend. When compared to the present, future streamflow is predicted to decrease by 2.73 × 108 m3 in 2021-2035 and by 1.51 × 108 m3 in 2036-2050 in the RCP4.5 scenario, and by 8.16 × 108 …

Dam Effects On Downstream Riparian Wetlands: The Nenjiang River, Northeast China, Yuexin Zheng, Guangxin Zhang, Yanfeng Wu, Y. Jun Xu, Changlei Dai

Faculty Publications

Many studies have found that damming a river can change downstream hydrology, sediment transport, channel morphology, and fish habitat. However, little is known about river dam effects on downstream riparian wetland dynamics and their quantitative relationship with hydrological alterations. In this study, hydrological time series and wetland distribution data spanning nearly 40 years (1978-2016) before and after the construction of a large dam in 2005 across the Nenjiang River in Northeast China were used to reveal the impact of dam on the downstream discharge regime and wetland degradation. Hydro-statistical and stepwise multiple regression analyses were performed to quantify the relationship …

Climate And Plant Trait Strategies Determine Tree Carbon Allocation To Leaves And Mediate Future Forest Productivity, Anna T. Trugman, Leander D.L. Anderegg, Brett T. Wolfe, Benjamin Birami, Nadine K. Ruehr, Matteo Detto, Megan K. Bartlett, William R.L. Anderegg

Faculty Publications

Forest leaf area has enormous leverage on the carbon cycle because it mediates both forest productivity and resilience to climate extremes. Despite widespread evidence that trees are capable of adjusting to changes in environment across both space and time through modifying carbon allocation to leaves, many vegetation models use fixed carbon allocation schemes independent of environment, which introduces large uncertainties into predictions of future forest responses to atmospheric CO2 fertilization and anthropogenic climate change. Here, we develop an optimization-based model, whereby tree carbon allocation to leaves is an emergent property of environment and plant hydraulic traits. Using a combination of …

Wetland Biomass And Productivity In Coastal Louisiana: Base Line Data (1976-2015) And Knowledge Gaps For The Development Of Spatially Explicit Models For Ecosystem Restoration And Rehabilitation Initiatives, Victor H. Rivera-Monroy, Courtney Elliton, Siddhartha Narra, Ehab Meselhe, Xiaochen Zhao, Eric White, Charles E. Sasser, Jenneke M. Visser, Xuelian Meng, Hongqing Wang, Zuo Xue, Fernando Jaramillo

Faculty Publications

Coastal Louisiana hosts 37% of the coastal wetland area in the conterminous US, including one of the deltaic coastal regions more susceptible to the synergy of human and natural impacts causing wetland loss. As a result of the construction of flood protection infrastructure, dredging of channels across wetlands for oil/gas exploration and maritime transport activities, coastal Louisiana has lost approximately 4900 km2 of wetland area since the early 1930s. Despite the economic relevance of both wetland biomass and net primary productivity (NPP) as ecosystem services, there is a lack of vegetation simulation models to forecast the trends of those functional …

Understanding The Spatiotemporal Development Of Human Settlement In Hurricane-Prone Areas On The Us Atlantic And Gulf Coasts Using Nighttime Remote Sensing, Xiao Huang, Cuizhen Wang, Junyu Lu

Faculty Publications

Hurricanes, as one of the most devastating natural hazards, have posed a great threat to people in coastal areas. A better understanding of the spatiotemporal dynamics of human settlement in hurricane-prone areas largely benefits sustainable development. This study uses the nighttime light (NTL) data from the Defense Meteorological Satellite Program’s Operational Linescan System (DMSP/OLS) to examine human settlement development in areas with different levels of hurricane proneness from 1992 to 2013. The DMSP/OLS NTL data from six satellites were intercalibrated and desaturated with the Advanced Very High Resolution Radiometer (AVHRR) and Moderate Resolution Imaging Spectroradiometer (MODIS) optical imagery to derive …

"Surviving Through Together": Hunger, Poverty And Persistence In High Point, North Carolina, Heather Hunt, Gene R. Nichol

Faculty Publications

No abstract provided.

Language Nests On The Move: The Case Of Võro Pre-Primary Education In Estonia, Kara D. Brown, Mariko Faster

Faculty Publications

This article considers the circuitous route of knowledge exchange from South (New Zealand)-to North (Finland)-to regional South (Estonia) by examining the development of Võro language nests (keelepesä) in Estonia. Language nests reflect the global nature of educational knowledge exchange as well as the importance of networks of languageresearchers and activists in this policy inspiration. Estonia is a fascinating case for understanding the international spread and local development of the language-nest approach in a post-Socialist context. The authors draw on concepts of policy borrowing and diffusion and the “grammar of schooling” to explore the spread of the language nest approach and …

Responsible Devolution Of Affordable Housing, Andrea Boyack

Faculty Publications

The federal government has been heavily involved in promoting housing affordability since the 1930s and continues to have a critical role to play. Over the past several decades, the federal government has financed affordability by promoting development and income subsidies, but specific allocation decisions have devolved. Housing inequities can best be addressed locally, but only if localities are held to high standards of fairness and regional coordination is facilitated. Successful and sustainable local solutions to housing affordability will also require a substantial financial investment, one that the federal government can and should reliably and adequately provide. Each year, Congress permits …

Shelf Inputs And Lateral Transport Of Mn, Co, And Ce In The Western North Pacific Ocean, Peter L. Morton, William M. Landing, Alan M. Shiller, Thomas D. Kelly, Michael Bizimis, John R. Donat, Eric H. De Carlo, Joseph Shacat

Faculty Publications

The margin of the western North Pacific Ocean releases redox-active elements like Mn, Co, and Ce into the water column to undergo further transformation through oxide formation, scavenging, and reductive dissolution. Near the margin, the upper ocean waters enriched in these elements are characterized by high dissolved oxygen, low salinity, and low temperature, and are a source of the North Pacific Intermediate Water. High dissolved concentrations are observed across the Western Subarctic Gyre, with a rapid decrease in concentrations away from the margin and across the subarctic-subtropical front. The particulate concentrations of Mn, Co, and Ce are also high in …

The Household Water Insecurity Experiences (Hwise) Scale: Development And Validation Of A Household Water Insecurity Measure For Low-Income And Middle-Income Countries, Sera L. Young, Godfred O. Boateng, Zeina Jamaluddine, Joshua D. Miller, Edward A. Frongillo, Torsten B. Neilands, Shaleans M. Collins, Amber Wutich, Wendy E. Jepson, Justin Stoler

Faculty Publications

Objective Progress towards equitable and sufficient water has primarily been measured by population-level data on water availability. However, higher-resolution measures of water accessibility, adequacy, reliability and safety (ie, water insecurity) are needed to understand how problems with water impact health and well-being. Therefore, we developed the Household Water InSecurity Experiences (HWISE) Scale to measure household water insecurity in an equivalent way across disparate cultural and ecological settings.

Methods Cross-sectional surveys were implemented in 8127 households across 28 sites in 23 low-income and middle-income countries. Data collected included 34 items on water insecurity in the prior month; socio-demographics; water acquisition, use …

The Household Water Insecurity Experiences (Hwise) Scale: Development And Validation Of A Household Water Insecurity Measure For Low-Income And Middle-Income Countries, Sera L. Young, Godfred O. Boateng, Zeina Jamaluddine, Joshua D. Miller, Edward A. Frongillo Jr., Torsten B. Neilands, Shelean M. Collins, Amber Wutich, Wendy E. Jepson, Justin Stoler, On Behalf Of The Hwise Research Coordination Network

Faculty Publications

Objective

Progress towards equitable and sufficient water has primarily been measured by population-level data on water availability. However, higher-resolution measures of water accessibility, adequacy, reliability and safety (ie, water insecurity) are needed to understand how problems with water impact health and well-being. Therefore, we developed the Household Water InSecurity Experiences (HWISE) Scale to measure household water insecurity in an equivalent way across disparate cultural and ecological settings.

Methods

Cross-sectional surveys were implemented in 8127 households across 28 sites in 23 low-income and middle-income countries. Data collected included 34 items on water insecurity in the prior month; sociodemographics; water acquisition, use …

Interrogating How Information (Re)Produces Systemic Barriers Within Lgbtq+ Communities To Inform Global Lis Education, Vanessa Kitzie, Travis L. Wagner, Nick Vera, Valerie Lookingbill

Faculty Publications

This preliminary research examines the health information practices of South Carolina LGBTQ+ communities. Findings have the following implications for LIS education at a global level: building cultural competency regarding the role of information in marginalizing certain populations, and training students to engage in user outreach and advocacy. These implications address a global need for LIS education to encompass social responsibility and inclusion into program curricula.

Smoke-Free Policies And Smoking Cessation In The United States, 2003–2015, Andrea R. Titus, Lucie Kalousova, Rafael Meza, David T. Levy, Jim Thrasher, Michael R. Elliott, Paula M. Lantz, Nancy L. Fleischer

Faculty Publications

(1) Background: Smoking restrictions have been shown to be associated with reduced smoking, but there are a number of gaps in the literature surrounding the relationship between smoke-free policies and cessation, including the extent to which this association may be modified by sociodemographic characteristics. (2) Methods: We analyzed data from the Tobacco Use Supplement to the Current Population Survey, 2003–2015, to explore whether multiple measures of smoking restrictions were associated with cessation across population subgroups. We examined area-based measures of exposure to smoke-free laws, as well as self-reported exposure to workplace smoke-free policies. We used age-stratified, fixed effects logistic regression …

Using Lord Of The Flies To Teach Social Networks, Jimi Adams

Faculty Publications

Lord of the Flies is commonly assigned reading for high school and college students. The novel about shipwrecked boys is often analyzed thematically to examine how the boys’ perceived isolation on the island effects their attitudes and behavior. However, what is similarly apparent is that the society they develop while on the island establishes certain patterns, and is governed by collective rules (some more explicit than others). Here I demonstrate how those behavioral patterns and norms are useful for interpreting the concepts and analytic tools found in social network literature. I describe how I used the novel as a “capstone” …

Knowledge Production And Power In An Online Critical Multicultural Teacher Education Course, Ramon Maile Cutri, Erin Feinauer Whiting, Eric Ruiz Bybee

Faculty Publications

This reflexive inquiry explores a teacher educator’s efforts to design opportunities for students to use their knowledge of social media and the Internet to contribute content to their online critical multicultural education course. Findings identify steps critical multicultural education pedagogues can take to design such opportunities: (a) identify contradictions in their practice, (b) take pedagogical risks, and (c) work with chronic tensions. Designing formal opportunities for students to identify and use content from social media and the Internet as learning resources and curricular content for critical multicultural education shifted the power relations in the course. These results demonstrate the potential …

Nonmonotonic Postdeglacial Relative Sea Level Changes At The Aftermath Of Marinoan (635 Ma) Snowball Earth Meltdown, Yoshiya Irie, Masao Nakada, Jun'ichi Okuno, Huiming Bao

Faculty Publications

© 2019. American Geophysical Union. All Rights Reserved. Marinoan snowball Earth offers us a set of sedimentary and geochemical records for exploring glacial isostatic adjustment (GIA) associated with one of the most severe glaciations in Earth history. An accurate prediction of GIA-based relative sea level (RSL) change associated with a snowball Earth meltdown will help to explore sedimentary records for RSL changes and to place independent constraints on mantle viscosity and on the durations of syndeglaciation (Td) and cap carbonate deposition. Here we mainly examine postdeglacial RSL change characterized by an RSL drop and a resumed transgression inferred from the …

Flood Protection Ecosystem Services In The Coast Of Puerto Rico: Associations Between Extreme Weather, Flood Hazard Mitigation And Gastrointestinal Illness, R. De Jesus Crespo, J. Wu, M. Myer, S. Yee, R. Fulford

Faculty Publications

No abstract provided.

Bluebills And Bayou Bivalves: Hurricane-Driven Trophic Cascades Affect Wintering Abundance Of Lesser Scaup In Louisiana, Clay M. Stroud, Claire E. Caputo, Michael A. Poirrier, Larry A. Reynolds, Kevin M. Ringelman

Faculty Publications

The estuaries of coastal Louisiana overwinter a continentally significant proportion of Lesser Scaup (Aythya affinis; colloquially, “bluebills”), a migratory bird species of conservation concern since population declines began in the 1980s. Thirty-eight years of aerial waterfowl surveys of Lake Pontchartrain—an oligohaline estuarine lagoon in southeast Louisiana—show that scaup abundance fluctuates between 0 and 1,194,907 birds, though the mechanisms driving this variation are unknown. Previous studies have shown that scaup feed primarily on mollusks, and so changes in the benthic prey community have the potential to strongly influence scaup dynamics on the Lake. Benthic communities are in turn shaped by both …

A Comprehensive Evaluation Of Predictive Performance Of 33 Species Distribution Models At Species And Community Levels, Anna Norberg, Nerea Abrego, F. Guillaume Blanchet, Frederick R. Adler, Barbara J. Anderson, Jani Anttila, Miguel B. Araújo, Tad Dallas, David Dunson, Jane Elith, Scott D. Foster, Richard Fox, Janet Franklin, William Godsoe, Antoine Guisan, Bob O'Hara, Nicole A. Hill, Robert D. Holt, Francis K.C. Hui, Magne Husby, John Atle Kålås, Aleksi Lehikoinen, Miska Luoto, Heidi K. Mod, Graeme Newell, Ian Renner, Tomas Roslin, Janne Soininen, Wilfried Thuiller, Jarno Vanhatalo, David Warton, Matt White, Niklaus E. Zimmermann, Dominque Gravel, Otso Ovaskainen

Faculty Publications

A large array of species distribution model (SDM) approaches has been developed for explaining and predicting the occurrences of individual species or species assemblages. Given the wealth of existing models, it is unclear which models perform best for interpolation or extrapolation of existing data sets, particularly when one is concerned with species assemblages. We compared the predictive performance of 33 variants of 15 widely applied and recently emerged SDMs in the context of multispecies data, including both joint SDMs that model multiple species together, and stacked SDMs that model each species individually combining the predictions afterward. We offer a comprehensive …

Climatology And Trends In Hourly Precipitation For The Southeast United States, Vincent M. Brown, Barry D. Keim, Alan W. Black

Faculty Publications

This research introduces a climatology of hourly precipitation characteristics, investigates trends in precipitation hours (PH) and hourly accumulation, and uses four different time series to determine if precipitation intensity is changing across the southeastern United States from 1960 to 2017. Results indicate hourly intensity significantly increased at 44% (22/50) of the stations, accompanied by an increase in average hourly accumulation at 40% of the sites analyzed (20/50). The average duration of precipitation events decreased at 82% (41/50) of the stations. However, the frequency of 90th percentile hourly events and events above station-specific average hourly totals did not show a broad …

Investigation Of Spectral Variation Of Pine Needles As An Indicator Of Arsenic Content In Soils, Ji Hye Shin, Jaehyung Yu, Lei Wang, Jieun Kim, Sang Mo Koh

Faculty Publications

The spectral response to arsenic (As) stress of pine needles (Pinus densiflora Siebold and Zucc.) from an abandoned lead (Pb)–zinc (Zn) mine was investigated based on chemical and spectroscopic analyses. The correlation analysis between the content of As in needle samples and that of soils and spectral parameters of the needle samples were conducted. The results showed very high correlation between As content in pine needles and soils. The major spectral response of pine needles to the As stress were characterized by the increase in the green and red color reflectance, the decrease in the first derivatives at 1648 nm, …

Nonmonotonic Postdeglacial Relative Sea Level Changes At The Aftermath Of Marinoan (635 Ma) Snowball Earth Meltdown, Yoshiya Irie, Masao Nakada, Jun'ichi Okuno, Huiming Bao

Faculty Publications

© 2019. American Geophysical Union. All Rights Reserved. Marinoan snowball Earth offers us a set of sedimentary and geochemical records for exploring glacial isostatic adjustment (GIA) associated with one of the most severe glaciations in Earth history. An accurate prediction of GIA-based relative sea level (RSL) change associated with a snowball Earth meltdown will help to explore sedimentary records for RSL changes and to place independent constraints on mantle viscosity and on the durations of syndeglaciation (Td) and cap carbonate deposition. Here we mainly examine postdeglacial RSL change characterized by an RSL drop and a resumed transgression inferred from the …