Abstract
Most of the more than 1,100 peer specialists (“peers”) in the Veterans Health Administration (VHA) work in mental healthcare settings. These peers provide a variety of services to Veterans ...such as facilitating groups, teaching recovery and coping skills, connecting Veterans with VHA and community services, and helping Veterans navigate VHA care. In 2014 the White House issued an Executive Action mandating the reassignment of peers from mental health to primary care settings in 25 VHA locations nationwide. This paper presents qualitative findings from a mixed-methods study evaluating this implementation of peers in VHA primary care. We found that peers assisted aging Veterans in primary care through activities such as providing health coaching, facilitating health education groups, connecting Veterans with services, and providing general peer support. Findings are drawn from semi-structured interviews with 27 peers, 25 supervisors, and 10 Veterans who received services from the peers in primary care.
Sustainable Lifewaysaddresses forces of conservatism and innovation in societies dependent on the exploitation of aquatic and other wild resources, agriculture, and specialized pastoralism. The ...volume gathers specialists working in four areas of the world with significant archaeological and paleoenvironmental databases: West Asia, the American Southwest, East Africa, and Andean South America, and contributing to research in three broad time scales: long term (spanning millennia), medium term (archaeological time, spanning centuries or a few thousand years), and recent (ethnohistoric or ethnographic, spanning years or decades). By bringing an archaeological eye to an examination of human response to unpredictable environmental conditions, informed by an understanding of contemporary traditional peoples, the contributors to this volume develop a more detailed picture of how societies perceive environmental risk, how they alter their behavior in the face of changing conditions, and under what challenges the most rapid and far-reaching changes in adaptation have taken place.Sustainable Lifewaysenhances our understanding of both the forces of conservatism and innovation which may have been in play in major transitions in the past, such as the development of complex society, and the expansions of early empires. Studies present examples of cattle herders in East Africa, hunter-gatherers and pastoralists in the Levant, South American fisher/farmers, and farmer/hunters of the U.S. Southwest.
Batch boiling targets are commonly used in cyclotrons to produce Fluorine-18 by proton bombardment of Oxygen-18 enriched water. Computational models have been developed to predict the thermal ...performance of bottom-pressurized batch boiling production targets. The models have been validated with experimental test data from the Duke University Medical Cyclotron and the Wisconsin Medical Cyclotron. Good agreement has been observed between experimental measurements and model predictions of average target vapor fraction as a function of beam current and energy.
The interdisciplinary framework known as resilience theory used by ecologists, social scientists, as well as policy makers, is primarily concerned with the sources of transformation and stability in ...complex socioecological systems. The laboratory of the long and diverse archaeological record is uniquely suited to testing some of the implications of this theoretical perspective. In this paper, we consider the history of land use and landscape change across the transition from foraging to agricultural subsistence economies in the Middle Chevelon Creek region of northern Arizona. Through this discussion, we highlight the potential roles of diversity and flexibility multiple spatial and temporal scales in the resilience of human land use practices from the prehistoric past. Expressing the long-term history of this region in a more general theoretical language that bridges the social and natural sciences promotes the collaboration of scientists with expertise deriving from different traditional disciplines. Such a broad perspective is necessary to characterize changes and stabilities in complex socioecological systems. PUBLICATION ABSTRACT
Diffusion is a fundamental part of social life, referring to the processes through which ideas about materials, technologies, and other cultural practices flow among individuals. It is often ...discussed in terms of novel ideas such as technological innovation and adoption. Diffusion can be contrasted with two other processes, the flow of goods through exchange and the flow of people, whether through marriage, migration, or forced movement and captivity. In reality, the flow of ideas rarely occurs without the flow of people or things and so materials, ideas, and people are all involved in diffusion. But it is the emphasis on
Boron nitride nanotubes (BNNTs) were investigated as a target media for cyclotron production of 11C for incident beam energy at or below 11 MeV. Both the 11B(p,n)11C and 14N(p,α)11C nuclear reactions ...were utilized. A sweep gas of nitrogen or helium was used to collect recoil escape atoms with a desired form of 11CO2. Three prototype targets were tested using an RDS-111 cyclotron. Target geometry and density were shown to impact the saturation yield of 11C and percent of yield recovered as carbon dioxide. Physical damage to the BNNT target media was observed at beam currents above 5 μA. Additional studies are needed to identify operating conditions suitable for commercial application of the method.
A high power F-18 fluoride target package for the RDS-112 cyclotron has been designed, tested, and commercially deployed. The upgrade includes the CF-1000 target, a 1.3kW water target with an ...established commercial history on RDS-111/Eclipse cyclotrons, and a redesigned collimator with improved heat rejection capabilities. Conjugate heat transfer analyses were employed to both evaluate the existing collimator capabilities and design a suitable high current replacement.
•An experiment is performed to benchmark conjugate heat transfer models.•Modeling results for three RDS-112 collimator designs are compared.•New RDS-112 collimators are deployed and tested at two sites.
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