55,808 research outputs found

    Recruiting and retaining children and families' social workers. The potential of work discussion groups

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    Current difficulties with the recruitment and retention of children and families' social workers have been formally acknowledged. However, although initiatives which focus on remuneration and career progression are clearly welcome, research and evidence from practice highlights how social workers themselves place high value on the availability of good quality supervision. Yet, questions remain about whether first-line managers have the time or are even in the best position to offer this support. This article draws on the experience and evaluation of one particular model of supervision — 'work discussion groups' —and explores its impact with residential social work staff and teachers as well as the potential for further developments of this kind

    Spinor Dynamics-Driven Formation of a Dual-Beam Atom Laser

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    We demonstrate a novel dual-beam atom laser formed by outcoupling oppositely polarized components of an F=1 spinor Bose-Einstein condensate whose Zeeman sublevel populations have been coherently evolved through spin dynamics. The condensate is formed through all-optical means using a single-beam running-wave dipole trap. We create a condensate in the field-insensitive mF=0m_F=0 state, and drive coherent spin-mixing evolution through adiabatic compression of the initially weak trap. Such dual beams, number-correlated through the angular momentum-conserving reaction 2m0⇋m+1+m−12m_0\leftrightharpoons m_{+1}+m_{-1}, have been proposed as tools to explore entanglement and squeezing in Bose-Einstein condensates, and have potential use in precision phase measurements.Comment: 4 pages, 4 figure

    Colorectal Cancer Brochure Development for African Americans

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    Introduction: African Americans are more likely to die from colorectal cancer (CRC) than any other racial/ethnic group in the United States. Unfortunately, African Americans are also less likely to undergo screening for CRC than their White counterparts. Focus groups methodology was used to refine educational brochures designed to increase CRC screening among African Americans. Methods: Two series of focus groups were completed, with a total of seven groups and 39 participants. Six different brochures (stage-matched and culturally sensitive) designed to promote CRC screening among African Americans were evaluated. Results: All participants thought that the brochures motivated them to talk with their health care providers about screening. Cost, pain, medical mistrust and fear were identified as major barriers and the brochures were modified to address these concerns. Conclusions: Focus groups methodology with African Americans can be used to inform brochures designed to increase African Americans CRC screening that addresses their major concerns

    Haze in the Mars atmosphere as revealed by the Mariner 4 television data

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    Photometric investigation of haze in Mars atmosphere revealed by Mariner 4 television dat

    Magnetic Excitations of the 2-D Sm Spin Layers in Sm(La,Sr)CuO4

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    We present specific heat and susceptibility data on Sm(La,Sr)CuO4 in magnetic fields up to 9 T and temperatures down to 100 mK. We find a broad peak in specific heat which is insensitive to magnetic field at a temperature of 1.5 K with a value of 2.65 J/mol K. The magnetic susceptibility at 5 T continues to increase down to 2 K, the lowest temperature measured. The data suggest that the Sm spin system may be an ideal realization of the frustrated Heisenberg antiferromagnet on the square lattice.Comment: 2 pages, 2 figures, submitted to IC

    Supporting Leopold Center research through on-farm trials and demonstrations

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    This project addresses sustainable agriculture\u27s need for farmers who (1) can develop the skills to conduct research trials (some replicated) of various innovative practices, and (2) who are also willing to demonstrate practices and share results. In conjunction with university scien­ tists, Practical Farmers of Iowa (a private, nonprofit, educational organization) has de­ veloped a procedure for generating statisti­ cally reliable information on working farms. From 1987 to 1993, they conducted approxi­ mately 340 trials. The scientists benefited from having data collected at multiple sites with particular soil characteristics, or where specific management abilities are employed (sustainable agriculture technologies fre­ quently depend on superior management)

    Slip boundary conditions for shear flow of polymer melts past atomically flat surfaces

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    Molecular dynamics simulations are carried out to investigate the dynamic behavior of the slip length in thin polymer films confined between atomically smooth thermal surfaces. For weak wall-fluid interactions, the shear rate dependence of the slip length acquires a distinct local minimum followed by a rapid growth at higher shear rates. With increasing fluid density, the position of the local minimum is shifted to lower shear rates. We found that the ratio of the shear viscosity to the slip length, which defines the friction coefficient at the liquid/solid interface, undergoes a transition from a nearly constant value to the power law decay as a function of the slip velocity. In a wide range of shear rates and fluid densities, the friction coefficient is determined by the product of the value of surface induced peak in the structure factor and the contact density of the first fluid layer near the solid wall.Comment: 27 pages, 11 figure
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