536 research outputs found
On Empirical Implications of Highly Interest-Elastic Money Demand : A Note
Based on a standard model of money demand, this paper first shows that a relationship between money supply and prices may be substantially weakened when money demand is highly interest-elastic, and then presents empirical evidence for this implication using the Japanese money market data for the sample period, 1985-1999.money demand, zero interest-rate policy, cointegration
Observations of SiO Maser Sources within a Few Parsec from the Galactic Center
Mapping and monitoring observations of SiO maser sources near the Galactic
center were made with the Nobeyama 45-m telescope at 43 GHz. Rectangular
mapping an area of approximately 200'' x 100''$ in a 30'' grid, and triangular
mapping in a 20'' grid toward the Galactic center, resulted in 15 detections of
SiO sources; the positions of the sources were obtained with errors of 5--10'',
except for a few weak sources. Three-year monitoring observations found that
the component at V_lsr=-27 km/s of IRS 10 EE flared to about 1.5 Jy during 2000
March--May, which was a factor of more than 5 brighter than its normal
intensity. Using the radial velocities and positions of the SiO sources, we
identified 5 which are counterparts of previously observed OH 1612 MHz sources.
The other 10 SiO sources have no OH counterparts, but two were previously
detected with VLA, and four are located close to the positions of
large-amplitude variables observed at near-infrared wavelengths. A
least-squares fit to a plot of velocities versus Galactic longitudes gives a
rather high speed for the rotation of the star cluster around the Galactic
center. The observed radial-velocity dispersion is roughly consistent with a
value obtained before. It was found that all of the SiO sources with OH 1612
MHz counterparts have periods of light variation longer than 450 days, while
SiO sources without OH masers often have periods shorter than 450 days. This
fact suggests that lower-mass AGB stars are more often detected in SiO masers
than in the OH 1612 MHz line.Comment: 9 pages, 7 figures. PASJ 54, No. 1 (2002) in pres
Quantum affine symmetry in vertex models
We study the higher spin anologs of the six vertex model on the basis of its
symmetry under the quantum affine algebra U_q(\slth). Using the method
developed recently for the XXZ spin chain, we formulate the space of states,
transfer matrix, vacuum, creation/annihilation operators of particles, and
local operators, purely in the language of representation theory. We find that,
regardless of the level of the representation involved, the particles have spin
, and that the -particle space has an RSOS-type structure rather than a
simple tensor product of the -particle space. This agrees with the picture
proposed earlier by Reshetikhin.Comment: 29 page
Branching random walks in random environment and super-brownian motion in random environment
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