9,784 research outputs found
Medicaid's Role in the Health Benefits Exchange: A Road Map for States
Examines issues for integrating Medicaid into the administration, operation, and coverage continuum of insurance exchanges. Discusses eligibility, enrollment, and outreach; contracting, standards, and requirements; benefits design; and infrastructure
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Organizational Images And Member Identification
We develop a model to explain how images of one's work organization shape the strength of his or her identification with the organization. We focus on two key organizational images: one based on what a member believes is distinctive, central, and enduring about his or her organization and one based on a member's beliefs about what outsiders think about the organization. According to the model, members assess the attractiveness of these images by how well the image preserves the continuity of their self-concept, provides distinctiveness, and enhances self-esteem. The model leads to a number of propositions about how organizational identification affects members' patterns of social interaction.Managemen
Steerable filters generated with the hypercomplex dual-tree wavelet transform
The use of wavelets in the image processing domain is still in its
infancy, and largely associated with image compression. With
the advent of the dual-tree hypercomplex wavelet transform (DHWT)
and its improved shift invariance and directional selectivity,
applications in other areas of image processing are more
conceivable. This paper discusses the problems and solutions in
developing the DHWT and its inverse. It also offers a practical
implementation of the algorithms involved. The aim of this work
is to apply the DHWT in machine vision.
Tentative work on a possible new way of feature extraction is
presented. The paper shows that 2-D hypercomplex basis wavelets
can be used to generate steerable filters which allow rotation
as well as translation.</p
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Changes in the genetic requirements for microbial interactions with increasing community complexity.
Microbial community structure and function rely on complex interactions whose underlying molecular mechanisms are poorly understood. To investigate these interactions in a simple microbiome, we introduced E. coli into an experimental community based on a cheese rind and identified the differences in E. coli's genetic requirements for growth in interactive and non-interactive contexts using Random Barcode Transposon Sequencing (RB-TnSeq) and RNASeq. Genetic requirements varied among pairwise growth conditions and between pairwise and community conditions. Our analysis points to mechanisms by which growth conditions change as a result of increasing community complexity and suggests that growth within a community relies on a combination of pairwise and higher-order interactions. Our work provides a framework for using the model organism E. coli as a readout to investigate microbial interactions regardless of the genetic tractability of members of the studied ecosystem
Extensive horizontal gene transfer in cheese-associated bacteria.
Acquisition of genes through horizontal gene transfer (HGT) allows microbes to rapidly gain new capabilities and adapt to new or changing environments. Identifying widespread HGT regions within multispecies microbiomes can pinpoint the molecular mechanisms that play key roles in microbiome assembly. We sought to identify horizontally transferred genes within a model microbiome, the cheese rind. Comparing 31 newly sequenced and 134 previously sequenced bacterial isolates from cheese rinds, we identified over 200 putative horizontally transferred genomic regions containing 4733 protein coding genes. The largest of these regions are enriched for genes involved in siderophore acquisition, and are widely distributed in cheese rinds in both Europe and the US. These results suggest that HGT is prevalent in cheese rind microbiomes, and that identification of genes that are frequently transferred in a particular environment may provide insight into the selective forces shaping microbial communities
The Role of the Basic Health Program in the Coverage Continuum: Opportunities, Risks and Considerations for States
Outlines issues for offering subsidized coverage to those eligible for insurance exchange subsidies by using federal dollars that would otherwise go to those subsidies, including continuity of coverage, impact on exchanges, and financial feasibility
Collisions of solitons and vortex rings in cylindrical Bose-Einstein condensates
Interactions of solitary waves in a cylindrically confined Bose-Einstein
condensate are investigated by simulating their head-on collisions. Slow vortex
rings and fast solitons are found to collide elastically contrary to the
situation in the three-dimensional homogeneous Bose gas. Strongly inelastic
collisions are absent for low density condensates but occur at higher densities
for intermediate velocities. The scattering behaviour is rationalised by use of
dispersion diagrams. During inelastic collisions, spherical shell-like
structures of low density are formed and they eventually decay into depletion
droplets with solitary wave features. The relation to similar shells observed
in a recent experiment [Ginsberg et al. Phys Rev. Lett. 94, 040403 (2005)] is
discussed
HHS Proposed Rules on Exchange Implementation Requirements
Highlights provisions of the new regulations and commentary on state health insurance exchanges that clarify or amplify the 2010 healthcare reform or offer insight into federal guidance or consensus on their establishment, functions, and other issues
Fundamental study of transpiration cooling
Isothermal and non-isothermal pressure drop data and heat transfer data generated on porous 304L stainless steel wire forms, sintered spherical stainless steel powder, and sintered spherical OFHC copper powder are reported and correlated. Pressure drop data was collected over a temperature range from 500 R to 2000 R and heat transfer data collected over a heat flux range from 5 to 15 BTU/in2/sec. It was found that flow data could be correlated independently of transpirant temperature and type (i.e., H2, N2). It was also found that no simple relation between heat transfer coefficient and specimen porosity was obtainable
Spin-flop and antiferromagnetic phases of the ferromagnetic half-twist ladder compounds Ba3Cu3In4O12 and Ba3Cu3Sc4O12
The title compounds have dominant ferromagnetic (FM) exchange interactions
within one-dimensional (1D) half-twist ladders of s =1/2 Cu2^{+} ions and
antiferromagnetic(AFM) interactions between ladders, leading to ordered 3D
phases at temperatures below 20K. Here we show that a microscopic 1D model of
the paramagnetic (PM) phase combined with a phenomenological model based on
sublattice magnetization describes the observed temperature and field dependent
magnetism. The model identifies AFM, spin-flop (SF) and PM phases whose
boundaries have sharp features in the experimental magnetization M(T,H) and
specific heat CP(T,H). Exact diagonalization (ED) of the 1D model, possible for
24 spins due to special structural features of half-twist ladders, yields the
magnetization and spin susceptibility of the PM phase. AFM interactions between
ladders are included at the mean-field level using the field, HAF, obtained
from modeling the ordered phases. Isotropic exchange J1 = -135K and g-tensor g
= 2.1 within ladders, plus exchange and anisotropy fields HAF and HA, describe
the ordered phases, and are almost quantitative for the PM phase.Comment: 21 pages,9 figures and accepted in Journal of Physics: Condensed
Matte
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