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Field-grown transgenic switchgras (Panicum virgatum L.) with altered lignin does not affect soil chemistry, microbiology, and carbon storage potential

Description: This article describes a study to evaluate effects of two independent lines of caffeic acid O-methyltransferase (COMT) downregulated switchgrass plants on soils in terms of chemistry, microbiolgy, and carbon cycling when grown in the field.
Date: September 22, 2016
Creator: DeBruyn, Jennifer M.; Bevard, David A.; Essington, Michael E.; McKnight, Julie Y.; Schaeffer, Sean M.; Baxter, Holly L. et al.
Partner: UNT College of Arts and Sciences

Mesoscopic structure conditions the emergence of cooperation on social networks

Description: We study the evolutionary Prisoner's Dilemma on two social networks substrates obtained from actual relational data. We find very different cooperation levels on each of them that cannot be easily understood in terms of global statistical properties of both networks. We claim that the result can be understood at the mesoscopic scale, by studying the community structure of the networks. We explain the dependence of the cooperation level on the temptation parameter in terms of the internal structure of the communities and their interconnections. We then test our results on community-structured, specifically designed artificial networks, finding a good agreement with the observations in both real substrates. Our results support the conclusion that studies of evolutionary games on model networks and their interpretation in terms of global properties may not be sufficient to study specific, real social systems. Further, the study allows us to define new quantitative parameters that summarize the mesoscopic structure of any network. In addition, the community perspective may be helpful to interpret the origin and behavior of existing networks as well as to design structures that show resilient cooperative behavior.
Date: December 1, 2008
Creator: Lozano, S.; Arenas, A. & Sanchez, A.
Partner: UNT Libraries Government Documents Department

Mapping the evolution of scientific ideas

Description: Despite the apparent conceptual boundaries of scientific fields, a formal description for their evolution is lacking. Here we describe a novel approach to study the dynamics and evolution of scientific fields using a network-based analysis. We build an idea network consisting of American Physical Society PACS numbers as nodes representing scientific concepts. Two PACS numbers are linked if there exist publications that reference them simultaneously. We locate scientific fields using Cfinder, an overlapping community finding algorithm, and describe the time evolution of these fields using a community evolution method over the course of 1985-2006. The communities we identify map to known scientific fields, and their age strongly depends on t.heir size, impact and activity. Our analysis further suggests that communities that redefine themselves by merging and creating new groups of ideas tend to have more fitness as measured by the impact per paper, and hence communities with a higher fitness tend to be short-lived. The described approach to quantify the evolution of ideas may be relevant in making predictions about the future of science and how to guide its development.
Date: January 1, 2009
Creator: Roberts, David; Herrera, Mark & Gulbahce, Natali
Partner: UNT Libraries Government Documents Department

Of Institutions, Initiatives, and the Importance of Regional Academic Communities: Building NYCDH

Description: Video recording of a presentation at the 2016 Digital Frontiers Annual Conference. In this presentation, Kimon Keramidas and Alex Gil discuss how the New York City Digital Humanities group enables a wide variety of communities of practice, and the importance of regional communities in facilitating the growth of new academic fields, such as digital humanities.
Date: September 22, 2016
Creator: Keramidas, Kimon & Gil, Alex
Partner: UNT Libraries

U.S. Department of Energy (DOE) Technical Assistance to Beichuan Reconstruction: Creating and Designing Low- to Zero-carbon Communities in New Beichuan, Sichuan Province

Description: Beichuan county, located in north of Sichuan Province, was the most severely damaged township in last May's Sichuan earthquake. Reconstruction of a new Beichuan is a high-profiled project by the governments. In addition to constructing structurally-sound, quake-safe buildings in the new development, rebuilding Beichuan presents an opportunity for constructing new low- to zero-carbon communities in the region. In fact, building up greener communities in the reconstruction has become a top priority for the county, which, at an estimated 7 square km, is expected to have 50,000 residents in 2015 and 70,000 in 2020. The recent focus of construction projects is on the east side of the river, while land on its west bank will be reserved for development in the mid- to long-term. In the near term, a number of new public buildings are scheduled to be constructed starting in November 2009. As indicated by the deputy county chief, Mr. He Wang, the construction timeframe is unusually tight. Many buildings, although in various stages of planning and design, will be constructed starting in November 2009. Timely expert advice on design improvement and planning considerations will benefit the integration of energy efficiency and environmental benign elements in Beichuan's reconstruction, and will help promoting integrated development of green communities with low- to zero-carbon emission from the region.
Date: October 29, 2009
Creator: Xu, Tengfang; Wang, Chuang; Hong, Tianzhen & Levine, Mark
Partner: UNT Libraries Government Documents Department

Personal Action

Description: Lesson plan containing a collection of activities and resources regarding personal action that meet state education standards and national sustainability standards for the 3rd grade level.
Date: June 26, 2014
Creator: Ibarra, Vanessa
Partner: UNT Office of Sustainability

HUD PowerSaver Pilot Loan Program

Description: The U.S. Department of Housing and Urban Development (HUD) recently announced the creation of a pilot loan program for home energy improvements. The PowerSaver loan program is a new, energy-focused variant of the Title I Property Improvement Loan Insurance Program (Title I Program) and is planned for introduction in early 2011. The PowerSaver pilot will provide lender insurance for secured and unsecured loans up to $25,000 to single family homeowners. These loans will specifically target residential energy efficiency and renewable energy improvements. HUD estimates the two-year pilot will fund approximately 24,000 loans worth up to $300 million; the program is not capped. The Federal Housing Administration (FHA), HUD's mortgage insurance unit, will provide up to $25 million in grants as incentives to participating lenders. FHA is seeking lenders in communities with existing programs for promoting residential energy upgrades.
Date: December 10, 2010
Creator: Zimring, Mark & Hoffman, Ian
Partner: UNT Libraries Government Documents Department

MILLIMETER-SCALE GENETIC GRADIENTS AND COMMUNITY-LEVEL MOLECULAR CONVERGENCE IN A HYPERSALINE MICROBIAL MAT

Description: To investigate the extent of genetic stratification in structured microbial communities, we compared the metagenomes of 10 successive layers of a phylogenetically complex hypersaline mat from Guerrero Negro, Mexico. We found pronounced millimeter-scale genetic gradients that are consistent with the physicochemical profile of the mat. Despite these gradients, all layers displayed near identical and acid-shifted isoelectric point profiles due to a molecular convergence of amino acid usage indicating that hypersalinity enforces an overriding selective pressure on the mat community.
Date: April 30, 2008
Creator: Fenner, Marsha W; Kunin, Victor; Raes, Jeroen; Harris, J. Kirk; Spear, John R.; Walker, Jeffrey J. et al.
Partner: UNT Libraries Government Documents Department

[Garden path]

Description: Photograph of the Kiyomizu Pottery Community in Kyoto, Japan. A garden path is visible in the foreground. The pathway is lined by bamboo on the right side and a building on the left side.
Date: 1978
Creator: Gough, Ray
Partner: UNT College of Visual Arts + Design

[Kiyomizu Pottery Community]

Description: Photograph of the Kiyomizu Pottery Community in Kyoto, Japan. A workshop is visible in the foreground. A man faces the camera. He sits behind a shelf filled with white bowls. Another worker is visible in the background in front of a row of windows.
Date: 1978
Creator: Gough, Ray
Partner: UNT College of Visual Arts + Design

Personal Response to Digital Frontiers Roundtable: Justin Strickland Hoff

Description: This response paper is for Dr. Jennifer Way's graduate art history seminar on 20th-21st century art. Students in Way's seminar attended 'Social Media and Digital Communities: A Roundtable Discussion,' a session featured at the Digital Frontiers 2012 conference. Way charged her students with writing a short paper to explore connections between the roundtable and their seminar studies. What follows is a short paper by graduate student, Justin Strickland Hoff.
Date: September 21, 2012
Creator: Hoff, Justin Strickland
Partner: UNT College of Visual Arts + Design

Personal Response to Digital Frontiers Roundtable: Allison Jarek

Description: This response paper is for Dr. Jennifer Way's graduate art history seminar on 20th-21st century art. Students in Way's seminar attended 'Social Media and Digital Communities: A Roundtable Discussion,' a session featured at the Digital Frontiers 2012 conference. Way charged her students with writing a short paper to explore connections between the roundtable and their seminar studies. What follows is a short paper by graduate student, Allison Jarek.
Date: September 21, 2012
Creator: Jarek, Allison
Partner: UNT College of Visual Arts + Design

[Pottery workshop]

Description: Photograph of the Kiyomizu Pottery Community in Kyoto, Japan. A small workshop is visible in the foreground. Three workers sit and paint bowls while others walk around and observe. Rows of bowls and dishes line the back wall.
Date: 1978
Creator: Gough, Ray
Partner: UNT College of Visual Arts + Design

[Clay sculpture]

Description: Photograph of a the yard at the Kiyomizu Pottery Community in Kyoto, Japan. A clay sculpture is visible in the foreground in front of piles of wood. A chain link fence is visible in the background. Numerous people wait behind the fence.
Date: 1978
Creator: Gough, Ray
Partner: UNT College of Visual Arts + Design

[Community building]

Description: Photograph of the Kiyomizu Pottery Community building in Kyoto, Japan. The side of the building is visible in the foreground. Tree branches and a bush intersect the foreground. A concrete lantern and a white scroll are visible outside of the building.
Date: 1978
Creator: Gough, Ray
Partner: UNT College of Visual Arts + Design

Havana Port Waterfront Monastery

Description: The close detail view shows the structural decoration on the facade of the waterfront monastery. The main portal is decorated in the Baroque style.
Access: This item is restricted to UNT Community Members. Login required if off-campus.
Date: unknown
Partner: UNT College of Visual Arts + Design