7,162 research outputs found

    Regional Trade Agreements and U.S. Agriculture

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    Regional trade agreements (RTA's) have become a fixture in the global trade arena. Their advocates contend that RTA's can serve as building blocks for multilateral trade liberalization. Their opponents argue that these trade pacts will divert trade from more efficient nonmember producing countries. U.S. agriculture can benefit from participating in RTA's and may lose when it does not. Agriculture is an important source of potential U.S. gains from RTA's. While the United States, as a global trader with diverse trade partners, can gain potentially more from global free trade than from RTA's, many recent RTA's have been more comprehensive in their liberalization of agricultural trade liberalization than the Uruguay Round. A strong multilateral process can help ensure that RTA's are trade creating, rather than protectionist.International Relations/Trade,

    Regional Trade Agreements and U.S. Agriculture

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    Please also see Regional Trade Agreements and U.S. Agriculture. This report summarizes the implications of regionalism for the United States, focusing on the effects of major RTA's on U.S. agriculture. Regional trade agreements (RTA's) have become a fixture in the global trade arena. Their advocates contend that RTA's can serve as building blocks for multilateral trade liberalization. Their opponents argue that these trade pacts will divert trade from more efficient nonmember producing countries. U.S. agriculture can benefit from participating in RTA's and may lose when it does not. Agriculture is the source of most potential U.S. gains from RTA's.International Relations/Trade,

    American Indian Adolescents Access to and Involvement in In-School Extracurricular Activities in Relation To Substance Use Frequency and Risk Behaviors

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    This thesis looks at the protective benefits that involvement in adult-led in-school extracurricular activities had on the use of drugs and alcohol by 8th, 10th, and 12th grade American Indian adolescents in Arizona. This population has been chosen because they have a history of oppression, substance abuse, and prejudice. These adolescents represent an extremely at-risk population due to historical trauma and the present-day responses to this trauma. The researcher used data previously collected by the Arizona Youth Survey in 2010 and looked at it through the lens of Hirschi\u27s Social Control Theory and the protective model of resilience. Hirschi\u27s theory states that deviance is caused by a lack of a bond to society and can possibly be prevented by (a) attachment, (b) commitment, (c) involvement, and (d) belief (Hirschi, 2002). Participation in adult-led in-school extracurricular activities can enhance the type of bonding Hirshi identified. The protective model of resilience explains how a particular resource might reduce the negative effects of a risk factor present in an individual\u27s life thereby minimizing the chance for problem behavior outcomes such as substance abuse (Bernat & Resnick, 2009). The researcher found that an adolescent\u27s participation in adult-led in-school extracurricular activities was: (a) related to a lower instance of risky substance abuse activities such as being drunk or high at school and (b) related to a lower engagement in the individual\u27s use of drugs and alcohol

    Literacy-related professional development preferences of secondary teachers

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    A survey of 100 teachers in one Ontario school board examined their literacy-related professional development preferences. The majority preferred short durations of literacy-related professional development. A small number did not want any literacy-related professional development. The most preferred forms of professional development were shared practice, mentoring, observation of colleagues, and collaborative lesson development. Preferences for form and content of professional development varied between subject areas and course types. Un sondage a Ă©tĂ© rĂ©alisĂ© auprĂšs de 100 enseignants d’une commission scolaire ontarienne afin de dĂ©terminer leurs prĂ©fĂ©rences en matiĂšre de perfectionnement professionnel liĂ© Ă  l’alphabĂ©tisme. La majoritĂ© des enseignants sondĂ©s prĂ©fĂšrent des cours de courte durĂ©e de perfectionnement professionnel liĂ© Ă  l’alphabĂ©tisme. Un petit nombre ne souhaite suivre aucun cours de perfectionnement professionnel liĂ© Ă  l’alphabĂ©tisme. Les formes prĂ©fĂ©rĂ©es de perfectionnement professionnel sont les pratiques partagĂ©es, le mentorat, l’observation des collĂšgues et le dĂ©veloppement collaboratif de systĂšmes Ă©ducatifs. Les prĂ©fĂ©rences en matiĂšre de forme et de contenu du perfectionnement professionnel varient fonction de la discipline et du genre de cours.

    Jones, E, Sheridan, J A & Franklin, J 2018 'Neolithic and Bronze Age occupation at Meadowend Farm, Clackmannanshire: Pots, pits and roundhouses' Scottish Archaeological Internet Reports 77

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    The excavations at Meadowend Farm, Clackmannanshire produced evidence for occupation at various times between the Early Neolithic and the Middle to Late Bronze Age. Significantly, it yielded the largest and best-dated assemblage of Middle Neolithic Impressed Ware yet encountered in Scotland, comprising at least 206 vessels. Episodes of Early to (pre-Impressed Ware) Middle Neolithic activity were represented by pits and post holes scattered across the excavated areas, some containing pottery of the Carinated Bowl tradition and some with charred plant remains; three blades of pitchstone and one of non-local flint were also found. The phase of activity associated with the Middle Neolithic Impressed Ware pottery (c 3350‒3000 cal bc) is represented mostly by clusters of pits, some containing hearth waste and/or charcoal, charred cereal grain and burnt hazelnut shell fragments. A stone axehead and a broken roughout for an axe- or adze-head were associated with this phase of occupation. There then appears to have been a hiatus of activity of around a millennium before occupation resumed. One Early Bronze Age structure and pits dating to around 2000 cal bc (plus undated pits containing possible Beaker pottery) were succeeded by four Early to Middle Bronze Age roundhouses dating to c 1750‒1300 cal bc and a large pit containing parts of at least 37 pots, and subsequently by two large double-ring roundhouses, an oval building, and ancillary structures and features dating to the Middle to Late Bronze Age, c 1300‒900 cal bc. There is also evidence suggesting lowlevel activity during the Iron Age, plus two medieval corn-drying kilns. Environmental evidence indicates cereal growing from the earliest period, and local woodland management. This publication focuses on the Neolithic and Bronze Age periods and discusses the significance of this site for our understanding of these periods, and particularly for the Middle Neolithic, in Scotland

    Vascular remodeling of the mouse yolk sac requires hemodynamic force

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    The embryonic heart and vessels are dynamic and form and remodel while functional. Much has been learned about the genetic mechanisms underlying the development of the cardiovascular system, but we are just beginning to understand how changes in heart and vessel structure are influenced by hemodynamic forces such as shear stress. Recent work has shown that vessel remodeling in the mouse yolk sac is secondarily effected when cardiac function is reduced or absent. These findings indicate that proper circulation is required for vessel remodeling, but have not defined whether the role of circulation is to provide mechanical cues, to deliver oxygen or to circulate signaling molecules. Here, we used time-lapse confocal microscopy to determine the role of fluid-derived forces in vessel remodeling in the developing murine yolk sac. Novel methods were used to characterize flows in normal embryos and in embryos with impaired contractility (Mlc2a^(–/–)). We found abnormal plasma and erythroblast circulation in these embryos, which led us to hypothesize that the entry of erythroblasts into circulation is a key event in triggering vessel remodeling. We tested this by sequestering erythroblasts in the blood islands, thereby lowering the hematocrit and reducing shear stress, and found that vessel remodeling and the expression of eNOS (Nos3) depends on erythroblast flow. Further, we rescued remodeling defects and eNOS expression in low-hematocrit embryos by restoring the viscosity of the blood. These data show that hemodynamic force is necessary and sufficient to induce vessel remodeling in the mammalian yolk sa

    Does a Carbonatite Deposit Influence Its Surrounding Ecosystem?

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    Carbonatites are unusual alkaline rocks with diverse compositions. Although previous work has characterized the effects these rocks have on soils and plants, little is known about their impacts on local ecosystems. Using a deposit within the Great Lakes–St. Lawrence forest in northern Ontario, Canada, we investigated the effect of a carbonatite on soil chemistry and on the structure of plant and soil microbial communities. This was done using a vegetation survey conducted above and around the deposit, with corresponding soil samples collected for determining soil nutrient composition and for assessing microbial community structure using 16S/ITS Illumina Mi-Seq sequencing. In some soils above the deposit a soil chemical signature of the carbonatite was found, with the most important effect being an increase in soil pH compared with the non-deposit soils. Both plants and microorganisms responded to the altered soil chemistry: the plant communities present in carbonatite-impacted soils were dominated by ruderal species, and although differences in microbial communities across the surveyed areas were not obvious, the abundances of specific bacteria and fungi were reduced in response to the carbonatite. Overall, the deposit seems to have created microenvironments of relatively basic soil in an otherwise acidic forest soil. This study demonstrates for the first time how carbonatites can alter ecosystems in situ

    Scotland Registry for Ankylosing Spondylitis (SIRAS) – Protocol

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    Funding SIRAS was funded by unrestricted grants from Pfizer and AbbVie. The project was reviewed by both companies, during the award process, for Scientific merit, to ensure that the design did not compromise patient safety, and to assess the global regulatory implications and any impact on regulatory strategy.Publisher PD
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