37,706 research outputs found
International data curation education action (IDEA) working group: a report from the second workshop of IDEA
The second workshop of the International Data curation Education (IDEA) Working Group was held December 5, 2008, in Edinburgh, Scotland, following the 4th International Digital Curation Conference. This workshop was jointly organized by the UK's Digital Curation Centre (DCC), the US's Institute of Museum and Library Services (IMLS), and the School of Information and Library Science at the University of North Carolina at Chapel Hill (SILS). Nearly forty educators and researchers accepted invitations to attend, with representation from universities, research centers, and funding agencies from Canada, the US, the UK, and Germany
On the use of a priori statistics in problems of plasma turbulence
Statistical averaging procedure in problems of plasma turbulence involving Vlasov equatio
Resonant four-wave interaction of electron plasma oscillations
Electrostatic approximation of resonant four-wave interaction of electron plasma oscillation
The evolution of wave correlations in uniformly turbulent, weakly nonlinear systems
Evolution of wave correlations in uniformly turbulent, weakly nonlinear system
Determinants of Depressive Symptoms Among Women on Public Assistance in Louisiana
Depression can be a significant barrier in the welfare-to-work transition of poor women. Fortunately, support from social networks can lessen symptoms and facilitate entry into the workplace. Inconsistency in the literature concerning the effects of social networks on the poor suggests further research is needed. Thus, we examine the level and determinants of depressive symptoms among participants in the Temporary Assistance to Needy Families program. Having a good job, being in good health, married, and black, and living in rural areas inhibit symptoms of depression. Remaining on TANF and having several children increases symptom levels. Those who report that they frequently have people to help them show lower levels of depression. The larger the social network, and the higher the percent of the network that is made up of neighbors, the higher the level of depression. While some of our findings suggest the success of 1996 welfare reform legislation others suggest important policy considerations. Good physical health (including access to health care), reduction of economic hardships, and effective social supports are ongoing issues to be addressed among low-income populations
One-dimensional kinetic description of nonlinear traveling-pulse (soliton) and traveling-wave disturbances in long coasting charged particle beams
This paper makes use of a one-dimensional kinetic model to investigate the
nonlinear longitudinal dynamics of a long coasting beam propagating through a
perfectly conducting circular pipe with radius . The average axial
electric field is expressed as , where and
are constant geometric factors, is the line density of beam particles, and
satisfies the 1D Vlasov equation. Detailed nonlinear
properties of traveling-wave and traveling-pulse (solitons) solutions with
time-stationary waveform are examined for a wide range of system parameters
extending from moderate-amplitudes to large-amplitude modulations of the beam
charge density. Two classes of solutions for the beam distribution function are
considered, corresponding to: (a) the nonlinear waterbag distribution, where
in a bounded region of -space; and (b) nonlinear
Bernstein-Green-Kruskal (BGK)-like solutions, allowing for both trapped and
untrapped particle distributions to interact with the self-generated electric
field .
.Comment: 42 pages, 17 figure
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