6,875 research outputs found
COMMUNITY CHOICES AND HOUSING DECISIONS: A SPATIAL ANALYSIS OF THE SOUTHERN APPALACHIAN HIGHLANDS
This paper examines land development using an integrated approach that combines residential decisions about choices of community in the Southern Appalachian region with the application of the GIS (Geographical Information System). The empirical model infers a distinctive heterogeneity in the characteristics of community choices. The results also indicate that socioeconomic motives strongly affect urban housing decisions while environmental amenities affect those of rural housing.Public Economics,
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The essential role of mitochondrial dynamics in antiviral immunity.
Viruses alter cellular physiology and function to establish cellular environment conducive for viral proliferation. Viral immune evasion is an essential aspect of viral persistence and proliferation. The multifaceted mitochondria play a central role in many cellular events such as metabolism, bioenergetics, cell death, and innate immune signaling. Recent findings accentuate that viruses regulate mitochondrial function and dynamics to facilitate viral proliferation. In this review, we will discuss how viruses exploit mitochondrial dynamics to modulate mitochondria-mediated antiviral innate immune response during infection. This review will provide new insight to understanding the virus-mediated alteration of mitochondrial dynamics and functions to perturb host antiviral immune signaling
Comparing Dense Galaxy Cluster Redshift Surveys with Weak Lensing Maps
We use dense redshift surveys of nine galaxy clusters at to
compare the galaxy distribution in each system with the projected matter
distribution from weak lensing. By combining 2087 new MMT/Hectospec redshifts
and the data in the literature, we construct spectroscopic samples within the
region of weak-lensing maps of high (70--89%) and uniform completeness. With
these dense redshift surveys, we construct galaxy number density maps using
several galaxy subsamples. The shape of the main cluster concentration in the
weak-lensing maps is similar to the global morphology of the number density
maps based on cluster members alone, mainly dominated by red members. We cross
correlate the galaxy number density maps with the weak-lensing maps. The cross
correlation signal when we include foreground and background galaxies at
0.5 is % larger than for cluster members alone
at the cluster virial radius. The excess can be as high as 30% depending on the
cluster. Cross correlating the galaxy number density and weak-lensing maps
suggests that superimposed structures close to the cluster in redshift space
contribute more significantly to the excess cross correlation signal than
unrelated large-scale structure along the line of sight. Interestingly, the
weak-lensing mass profiles are not well constrained for the clusters with the
largest cross correlation signal excesses (20% for A383, A689 and A750). The
fractional excess in the cross correlation signal including foreground and
background structures could be a useful proxy for assessing the reliability of
weak-lensing cluster mass estimates.Comment: 22 pages, 19 figures, 2 tables. To appear in ApJ. Paper with high
resolution figures is available at
http://astro.kias.re.kr/~hshwang/ms_hwang20141014.pd
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