5,061 research outputs found
Goodwill Impairment: A New Window For Earnings Management?
The Financial Accounting Standards Board promulgated standard No. 142 in an attempt to improve the understandability of accounting information. This new rule eliminated the practice of automatically amortizing goodwill. No. 142 requires public companies to test goodwill for possible impairment at least annually. An unintended consequence of this new standard is the opportunity for companies to use it in earnings management. To test the possibility that the rule is being used for this purpose, a sample of companies was chosen, all of which had amounts of goodwill on their balance sheet during the 2003-2005 interval. The results reveal that the number of companies experiencing losses or low rates of return on total assets who actually impaired goodwill was statistically insignificant during the period under consideration. Thus, the results strongly suggest that companies are using No. 142 in an attempt to manage the volatility of earnings.  
L1599B: Cloud Envelope and C+ Emission in a Region of Moderately Enhanced Radiation Field
We study the effects of an asymmetric radiation field on the properties of a
molecular cloud envelope. We employ observations of carbon monoxide (12CO and
13CO), atomic carbon, ionized carbon, and atomic hydrogen to analyze the
chemical and physical properties of the core and envelope of L1599B, a
molecular cloud forming a portion of the ring at approximately 27 pc from the
star Lambda Ori. The O III star provides an asymmetric radiation field that
produces a moderate enhancement of the external radiation field. Observations
of the [CII] fine structure line with the GREAT instrument on SOFIA indicate a
significant enhanced emission on the side of the cloud facing the star, while
the [Ci], 12CO and 13CO J = 1-0 and 2-1, and 12CO J = 3-2 data from the PMO and
APEX telescopes suggest a relatively typical cloud interior. The atomic, ionic,
and molecular line centroid velocities track each other very closely, and
indicate that the cloud may be undergoing differential radial motion. The HI
data from the Arecibo GALFA survey and the SOFIA/GREAT [CII] data do not
suggest any systematic motion of the halo gas, relative to the dense central
portion of the cloud traced by 12CO and 13CO.Comment: 9 Figure
Product Analytics Based On Demographic Democratization
Product analytics is a blend of computational methods with the express purpose of facilitating the multifaceted process of decision-making based on demographic and consumer preferences. This complex subject is derived from consensus theory and includes structured analytics, categories, and the combination of evidence. The methodology is applicable to a wide range of business, economic, social, political, and strategic decisions. The paper describes a product allocation application to demonstrate the concepts
Characterizing the transition from diffuse atomic to dense molecular clouds in the Magellanic clouds with [CII], [CI], and CO
We present and analyze deep Herschel/HIFI observations of the [CII] 158um,
[CI] 609um, and [CI] 370um lines towards 54 lines-of-sight (LOS) in the Large
and Small Magellanic clouds. These observations are used to determine the
physical conditions of the line--emitting gas, which we use to study the
transition from atomic to molecular gas and from C^+ to C^0 to CO in their low
metallicity environments. We trace gas with molecular fractions in the range
0.1<f(H2)<1, between those in the diffuse H2 gas detected by UV absorption
(f(H2)<0.2) and well shielded regions in which hydrogen is essentially
completely molecular. The C^0 and CO column densities are only measurable in
regions with molecular fractions f(H2)>0.45 in both the LMC and SMC. Ionized
carbon is the dominant gas-phase form of this element that is associated with
molecular gas, with C^0 and CO representing a small fraction, implying that
most (89% in the LMC and 77% in the SMC) of the molecular gas in our sample is
CO-dark H2. The mean X_CO conversion factors in our LMC and SMC sample are
larger than the value typically found in the Milky Way. When applying a
correction based on the filling factor of the CO emission, we find that the
values of X_CO in the LMC and SMC are closer to that in the Milky Way. The
observed [CII] intensity in our sample represents about 1% of the total
far-infrared intensity from the LOSs observed in both Magellanic Clouds.Comment: 32 pages, 21 figures, Accepted to Ap
Vortices and domain walls in a Chern-Simons theory with magnetic moment interaction
We study the structure and properties of vortices in a recently proposed
Abelian Maxwell-Chern-Simons model in dimensions. The model which is
described by gauge field interacting with a complex scalar field, includes two
parity and time violating terms: the Chern-Simons and the anomalous magnetic
terms. Self-dual relativistic vortices are discussed in detail. We also find
one dimensional soliton solutions of the domain wall type. The vortices are
correctly described by the domain wall solutions in the large flux limit.Comment: To be published in Phys RevD 23 pages, RevTex, 5 figure
HATNet Field G205: Follow-Up Observations of 28 Transiting-Planet candidates and Confirmation of the Planet HAT-P-8b
We report the identification of 32 transiting-planet candidates in HATNet
field G205. We describe the procedures that we have used to follow up these
candidates with spectroscopic and photometric observations, and we present a
status report on our interpretation of the 28 candidates for which we have
follow-up observations. Eight are eclipsing binaries with orbital solutions
whose periods are consistent with their photometric ephemerides; two of these
spectroscopic orbits are singled-lined and six are double-lined. For one of the
candidates, a nearby but fainter eclipsing binary proved to be the source for
the HATNet light curve, due to blending in the HATNet images. Four of the
candidates were found to be rotating more rapidly than vsini = 50 km/s and were
not pursued further. Thirteen of the candidates showed no significant velocity
variation at the level of 0.5 to 1.0 km/s . Seven of these were eventually
withdrawn as photometric false alarms based on an independent reanalysis using
more sophisticated tools. Of the remaining six, one was put aside because a
close visual companion proved to be a spectroscopic binary, and two were not
followed up because the host stars were judged to be too large. Two of the
remaining candidates are members of a visual binary, one of which was
previously confirmed as the first HATNet transiting planet, HAT-P-1b. In this
paper we confirm that the last of this set of candidates is also a a transiting
planet, which we designate HAT-P-8b, with mass Mp = 1.52 +/- 0.18/0.16 Mjup,
radius Rp = 1.50 +/- 0.08/0.06 Rjup, and photometric period P = 3.076320 +/-
0.000004 days. HAT-P-8b has an inflated radius for its mass, and a large mass
for its period. The host star is a solar-metallicity F dwarf, with mass M* =
1.28 +/- 0.04 Msun and Rp = 1.58 +/- 0.08/0.06 Rsun.Comment: 16 pages, 6 figures, 13 table
Demonstration of images with negative group velocities
We report the experimental demonstration of the superluminal propagation of
multi-spatial-mode images via four-wave mixing in hot atomic vapor, in which
all spatial sub-regions propagate with negative group velocities. We
investigate the spatial mode properties and temporal reshaping of the fast
light images, and show large relative pulse peak advancements of up to 64% of
the input pulse width. The degree of temporal reshaping is quantified and
increases as the relative pulse peak advancement increases. When optimized for
image quality or pulse advancement, negative group velocities of up to
and , respectively, are
demonstrated when integrating temporally over the entire image. The present
results are applicable to temporal cloaking devices that require strong
manipulation of the dispersion relation, where one can envision temporally
cloaking various spatial regions of an image for different durations.
Additionally, the modes involved in a four-wave mixing process similar to the
present experiment have been shown to exhibit quantum correlations and
entanglement. The results presented here provide insight into how to tailor
experimental tests of the behavior of these quantum correlations and
entanglement in the superluminal regime.Comment: 9 pages, 4 figure
A poxviral homolog of the Pellino protein inhibits Toll and Toll-like receptor signalling
Toll-like receptor (TLR) signalling pathways constitute an evolutionarily conserved
component of the host immune response to pathogenic infection. Here, we describe the
ability of a virally encoded form of the Pellino protein to inhibit Toll- and TLR-mediated
activation of downstream Rel family transcription factors. In addition to inhibiting drosomycin
promoter activation by Spa¨ tzle in Drosophila melanogaster cells, viral Pellino
attenuates the activation of NF-jB by TLR signalling components and by the TLR4 ligand,
LPS, in human cells. We propose that viral Pellino, like mammalian Pellinos, contains a
forkhead-associated domain but differs from the mammalian forms in that it lacks a
complete and functional RING-like domain. We produce a homology model and present
experimental data to support this model by demonstrating that, like mammalian Pellinos,
viral Pellino can interact with IRAK-1 via its forkhead-associated domain, whereas unlike
its mammalian counterparts, it fails to post-translationally modify IRAK-1. Furthermore,
we demonstrate that viral Pellino can functionally antagonise the activity of human
Pellino3S. Thus, our findings identify potential immunoevasive capabilities possessed by a
poxviral homolog of the Pellino protein and add growing evidence for a likely role for
Pellino proteins in Toll and TLR signalling
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