202 research outputs found
Magnetic properties in the inhomogeneous chiral phase
We investigate the magnetic properties of quark matter in the inhomogeneous
chiral phase, where both scalar and pseudoscalar condensates spatially
modulate. The energy spectrum of the lowest Landau level becomes asymmetric
about zero in the external magnetic field, and gives rise to the remarkably
magnetic properties: quark matter has a spontaneous magnetization, while the
magnetic susceptibility does not diverge on the critical point.Comment: 6 pages, 3 figures, talk given in Excited QCD 2016, Mar. 6-12, 2016,
Costa da Caparica, Portuga
Interstellar Extinction Law toward the Galactic Center II: V, J, H, and Ks Bands
We have determined the ratios of total to selective extinction directly from
observations in the optical V band and near-infrared J band toward the Galactic
center. The OGLE (Optical Gravitational Lensing Experiment) Galactic bulge
fields have been observed with the SIRIUS camera on the IRSF telescope, and we
obtain A(V)/E(V-J)=1.251+-0.014 and A(J)/E(V-J)=0.225+-0.007. From these
ratios, we have derived A(J)/A(V) = 0.188+-0.005; if we combine A(J)/A(V) with
the near-infrared extinction ratios obtained by Nishiyama et al. for more
reddened fields near the Galactic center, we get A(V) : A(J) : A(H) : A(Ks) = 1
: 0.188 : 0.108 : 0.062, which implies steeply declining extinction toward the
longer wavelengths. In particular, it is striking that the Ks band extinction
is \approx 1/16 of the visual extinction A(V) much smaller than one tenth of
A(V) so far employed.Comment: 8 pages, 7 figures, Accepted for publication in Ap
Source of the Great Recession
We incorporate two structural shocks associated with balance sheets of both the financial and nonfinancial firms in a medium scale New Keynesian dynamic stochastic general equilibrium (DSGE) model. The structural shocks in the model are assumed to possess stochastic volatilities with a leverage effect. Then, we estimated the model using a data-rich estimation method and utilized up to 40 macroeconomic time series. We found the following three pieces of empirical evidence in the Great Recession (Dec. 2007–Jun. 2009) worsened further by the collapse of Lehman Brothers in September 2008. First, the net-worth shock of financial firms had gradually declined prior to a huge decrease of net-worth of nonfinancial firms. Second, the net worth shock of nonfinancial firms accounted for large weight of the business cycles after the Great Recession, in terms of the data-rich approach with the SV of structural shocks, unlike the standard DSGE model. Third, the Troubled Asset Relief Program would have immediately worked to improve balance sheets of financial institutions, although it would not have stopped worsening those of the corporate sector for a while
Estimating Productivity of Dairy Cows by Inductive Logic Programming
In this study, we attempt deriving rules to estimate the productivity of dairy cows using inductive logic programming (ILP) for dairy farming. The milk yield of dairy cows is economically important and, of course, should be large. Accordingly, we selected data using the total milk yield in a lifetime as a
threshold, and our ILP algorithm learned about positive and negative cases. As a result, 42 rules in positive, and 11 rules in negative were derived. ILP is also applicable for dairy farming and can provide useful information for farmers
Aggregation Control by Multi-stimuli-Responsive Poly(N-vinylamide) Derivatives in Aqueous System
Thermal and photo responsive copolymer based on N-vinylamide backbone was designed. Methoxyethyl group and azobenzene were selected to improve hydrophilicity and photoresponsive moieties, respectively. The N-(methoxyethyl)-N-vinylformamide was synthesized and copolymerized with N-vinylformamide by free radical polymerization. In order to control the nanosized structures, poly(N-vinylformamide) derivatives bearing azobenzene at the N-position near to the vinyl polymer main chain were synthesized by polymer reaction with the poly(N-vinylformamide-co-N-(methoxyethyl)-N-vinylformamide) and azobenzene. Aggregation size of the multi-stimuli-responsive polymer was controlled by preparation of the hydrophobic interaction at around N-position
Traffic Incident Database with Multiple Labels Including Various Perspective Environmental Information
A large dataset of annotated traffic accidents is necessary to improve the
accuracy of traffic accident recognition using deep learning models.
Conventional traffic accident datasets provide annotations on traffic accidents
and other teacher labels, improving traffic accident recognition performance.
However, the labels annotated in conventional datasets need to be more
comprehensive to describe traffic accidents in detail. Therefore, we propose
V-TIDB, a large-scale traffic accident recognition dataset annotated with
various environmental information as multi-labels. Our proposed dataset aims to
improve the performance of traffic accident recognition by annotating ten types
of environmental information as teacher labels in addition to the presence or
absence of traffic accidents. V-TIDB is constructed by collecting many videos
from the Internet and annotating them with appropriate environmental
information. In our experiments, we compare the performance of traffic accident
recognition when only labels related to the presence or absence of traffic
accidents are trained and when environmental information is added as a
multi-label. In the second experiment, we compare the performance of the
training with only contact level, which represents the severity of the traffic
accident, and the performance with environmental information added as a
multi-label. The results showed that 6 out of 10 environmental information
labels improved the performance of recognizing the presence or absence of
traffic accidents. In the experiment on the degree of recognition of traffic
accidents, the performance of recognition of car wrecks and contacts was
improved for all environmental information. These experiments show that V-TIDB
can be used to learn traffic accident recognition models that take
environmental information into account in detail and can be used for
appropriate traffic accident analysis.Comment: Conference paper accepted to IEEE/RSJ International Conference on
Intelligent Robots and Systems (IROS), 2023 Reason for revision: Corrected
due to a missing space between sentences in the preview's abstract, which led
to an unintended URL interpretatio
Near-Infrared Extinction in The Coalsack Globule 2
We have conducted J, H, and Ks imaging observations for the Coalsack Globule
2 with the SIRIUS infrared camera on the IRSF 1.4 m telescope at SAAO, and
determined the color excess ratio, E(J-H)/E(H-Ks). The ratio is determined in
the same photometric system as our previous study for the rho Oph and Cha
clouds without any color transformation; this enables us to directly compare
the near-infrared extinction laws among these regions. The current ratio
E(J-H)/E(H-Ks) = 1.91 +- 0.01 for the extinction range 0.5 < E(J-H) <1.8 is
significantly larger than the ratios for the rho Oph and Cha clouds
(E(J-H)/E(H-Ks) = 1.60-1.69). This ratio corresponds to a large negative index
alpha = 2.34 +- 0.01 when the wavelength dependence of extinction is
approximated by a power law which might indicate little growth of dust grains,
or larger abundance of dielectric non-absorbing components such as silicates,
or both in this cloud. We also confirm that the color excess ratio for the
Coalsack Globule 2 has a trend of increasing with decreasing optical depth,
which is the same trend as the rho Oph and Cha clouds have.Comment: 13 pages, 5 figures, and 2 tables, Ap
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