Improving tall fescue shade tolerance : identifying candidate genotypes

Paper presented at the 11th North American Agroforesty Conference, which was held May 31-June 3, 2009 in Columbia, Missouri.In Gold, M.A. and M.M. Hall, eds. Agroforestry Comes of Age: Putting Science into Practice. Proceedings, 11th North American Agroforestry Conference, Columbia, Mo., May 31-June 3, 2009.Tall fescue (Schedonorus arundinaceus) is genetically variable for many agronomic traits, so it might be possible to increase its persistence and productivity in shaded agroforestry applications. The objective of this research was to identify high yielding, shade-tolerant genotypes. Seed was obtained from eight families: seven plant introductions of European origin: 234718, 234720, 234882, 234884, 235018, 235019, 235036, and one cultivar (Kentucky 31). Two sequential experiments were conducted to select genotypes for dry mass yield during April to September. Experiment (Exp) 1 included 30 genotypes of each of the eight families randomly assigned to each of two microenvironments: artificially shaded with fabric and unshaded. Maximum and minimum yields were 93.9 and 47.1 g family-1 for Kentucky 31 and 235036, respectively. After 1 yr, the proportion of vigorous survivors in Exp 1 was greater in the unshaded than shaded environment (0.40 and 0.09, respectively), and ranged from 0 to 0.56 (235036 and Kentucky 31, respectively). Forty robust genotypes (one later died) from four families (234718, 234720, 235019, and Kentucky 31) were selected from shaded and unshaded microenvironments of Exp 1, clonally propagated, and evaluated in pots for 2 yr in Exp 2. Shade-selected Kentucky 31 yielded more (31.0 g plant-1) in shade than other shade-selected families (25.2 to 25.8 g plant-1). Eleven genotypes in the top quartile (yield [greater than] 33.0 g plant-1) were selected for further testing. All genotypes were endophyte (Neotyphodium coenophialum)-infected. Future research will include seed increases and measuring yield in shaded, water-deficit conditions of a tree understory.David M. Burner (1) and Chuck P. West (2) ; 1. USDA-ARS, Dale Bumpers Small Farms Research Center, 6883 South State Hwy. 23, Booneville, AR 72927. 2. University of Arkansas, 1366 W. Altheimer Drive, Fayetteville, AR 72704.Includes bibliographical references

Correlates of sociometric status in Russian preschoolers: Aggression, victimization, and sociability

© 2016 Elsevier Ltd. Few studies have assessed behavioral correlates of preschool children\u27s peer sociometric status in cultures outside North America. This study focuses on 221 Russian preschoolers (108 boys, 113 girls). Correlates included physical and relational forms of aggression/victimization and sociable behavior. Confirmatory Factor Analyses (CFA) established that study instruments originally developed with U.S. preschoolers worked well in Russia. Findings in regard to aggression, sociability, and victimization were generally consistent with previous research with American and Italian preschoolers, particularly in regard to controversial status children. Our findings further challenge the notion that controversial children are consistently savvy in their social interactions. They and rejected children were most likely to be physically and relationally victimized by their peers

American political affiliation, 2003–43: a cohort component projection

The recent rise and stability in American party identification has focused interest on the long-term dynamics of party bases. Liberal commentators cite immigration and youth as forces which will produce a natural Democratic advantage in the future while conservative writers highlight the importance of high Republican fertility in securing Republican growth. These concerns foreground the neglect of demography within political science. This paper addresses this omission by conducting the first ever cohort component projection of American partisan populations to 2043 based on survey and census data. A number of scenarios are modeled, but, on current trends, we predict that American partisanship will shift much less than the nation’s ethnic composition because the parties’ age structures are similar. Still, our projections find that the Democrats gain two to three percentage points from the Republicans by 2043, mainly through immigration, though Republican fertility may redress the balance in the very long term

Khresmoi Professional: Multilingual Semantic Search for Medical Professionals

There is increasing interest in and need for innovative solutions to medical search. In this paper we present the EU funded Khresmoi medical search and access system, currently in year 3 of 4 of development across 12 partners . The Khresmoi system uses a component based architecture housed in the cloud to allow for the development of several innovative applications to support target users medical information needs. The Khresmoi search systems based on this architecture have been designed to support the multilingual and multimod al information needs of three target groups the general public, general practitioners and consultant radiologists. In this paper we focus on the presentation of the systems to support the latter two groups using semantic, multilingual text and image based (including 2D and 3D radiology images) search

America Firsthand: From Settlement to Reconstruction, Volume II

This distinctive, class-tested primary source reader tells America’s story through the words and other creative expressions of the ordinary and extraordinary Americans who shaped it. Now featuring the contributions of new co-author John M. Giggie, an award-winning teacher and scholar from the University of Alabama, America Firsthand offers a remarkable range of first-person perspectives that bring the past vividly to life — from an African American minister’s message of racial liberation, to the prison notes of suffragists, to a writer’s recollections of Sputnik. “Points of View” sections provide varied vantage points on important topics, and “Visual Portfolios” draw students into interpreting the visual record. This carefully crafted, ready-to-go collection saves instructors time and effort in finding consistently engaging and informative sources.https://scholar.dominican.edu/cynthia-stokes-brown-books-american-history/1012/thumbnail.jp

America Firsthand: From Settlement to Reconstruction, Volume I

This distinctive, class-tested primary source reader tells America’s story through the words and other creative expressions of the ordinary and extraordinary Americans who shaped it. Now featuring the contributions of new co-author John M. Giggie, an award-winning teacher and scholar from the University of Alabama, America Firsthand offers a remarkable range of first-person perspectives that bring the past vividly to life — from an African American minister’s message of racial liberation, to the prison notes of suffragists, to a writer’s recollections of Sputnik. “Points of View” sections provide varied vantage points on important topics, and “Visual Portfolios” draw students into interpreting the visual record. This carefully crafted, ready-to-go collection saves instructors time and effort in finding consistently engaging and informative sources.https://scholar.dominican.edu/cynthia-stokes-brown-books-american-history/1011/thumbnail.jp

America Firsthand

Compiled by Robert D. Marcus (for College at Brockport faculty member), David Burner, Anthony Marcus. One of the most widely adopted primary source U.S. history readers, America Firsthand presents history in the words of the people who made it, inviting and provoking students to think critically about the past. The seventh edition continues to bring the past to life with more visual and textual sources that increase diversity, represent current scholarship, and engage students.https://digitalcommons.brockport.edu/bookshelf/1350/thumbnail.jp

The Challenges Behind Cyanobacteria in Southern Florida

Cyanobacteria are microorganisms that are important in the formation of the earth’s atmosphere as well as in the process of nitrogen fixation. In Lake Okeechobee, algae blooms of Anabaena and Microcystis strains of toxic cyanobacteria have been increasing since 1987. Due to an increase of the water level, the U.S. Army Corps of Engineers have been forced to release water from the lake, allowing the cyanobacteria and nutrients to flow into the waterways. We researched multiple methods of cyanobacteria filtration and compiled what we believe are the most effective methods into one system. We recommend the use of filtration strip switchgrass and filtration plates to filter out the nitrogen and phosphorous and remove the cyanobacteria in the long term

Dynamic Deformation Measurements of an Aeroelastic semispan model”, AIAA Paper 2001-2454

The techniques used to acquire, reduce, and analyze dynamic deformation measurements of an aeroelastic semispan wind tunnel model are presented. Single-camera, single-view video photogrammetry (also referred to as videogrammetric model deformation, or VMD) was used to determine dynamic aeroelastic deformation of the semispan "Models for Aeroelastic Validation Research Involving Computation" (MAVRIC) model in the Transonic Dynamics Tunnel at the NASA Langley Research Center. Dynamic deformation was determined from optical retroreflective tape targets at 5 semispan locations located on the wing from the root to the tip