513 research outputs found
To What Extent do Investors in a Financial Market Anchor Their Judgments? Evidence from the Hong Kong Horserace Betting Market
This paper explores the use of the anchoring and adjustment heuristic by decision makers in a financial market; in particular, the degree to which horserace bettors anchor their probability judgments on the advantage afforded by a horse‟s barrier-position. The results suggest that under certain conditions bettors anchor on barrier-position information revealed at previous race meetings, but not on the most recent race outcomes. In fact, bettors appear to use the most recent race outcomes appropriately when forming probability estimates; but only when the results are in line with their mental model of barrier-position advantage. Bettors with varying levels of expertise are shown to be subject to anchoring, although greater expertise is generally associated with less anchoring. The paper concludes that the manner and degree of anchoring in real world environ.
Solar District Cup Competition
The Solar District Cup is a two-semester design competition sponsored by the U.S. Dept. of Energy in which teams from across the nation compete to design the most efficient and cost effective solar plus storage system for a unique district case. The Embry Riddle team was tasked with designing such a system for New Mexico State University in Las Cruses, NM
U.S. Department of Energy Competition: Solar District Cup
The Solar District Cup is a two-semester design competition sponsored by the U.S. Dept. of Energy. For this competition, teams from across the nation are tasked with designing the most efficient and cost-effective solar plus storage system for a unique district case. The Embry Riddle team was tasked with designing such a system for New Mexico State University (NMSU) in Las Cruses, NM. During the first semester, the team\u27s primary focus was on selecting the photovoltaic panels and equipment used, placing/wiring that equipment across the campus, and developing a plan that would finish construction of the system within 6-months. For this second semester our focus has been on how to incorporate an energy storage system that will allow NMSU to lower their daily peak demand charges without affecting the 6-month construction period, and, per the competition requirements, ensure that the entire project will be fully paid back within 25 years. Our results showcase our proposed design, with a focus on the benefits associated with installing such a system
Comments on Perturbative Dynamics of Non-Commutative Yang-Mills Theory
We study the U(N) non-commutative Yang-Mills theory at the one-loop
approximation. We check renormalizability and gauge invariance of the model and
calculate the one-loop beta function. The interaction of the SU(N) gauge bosons
with the U(1) gauge boson plays an important role in the consistency check. In
particular, the SU(N) theory by itself is not consistent. We also find that the
theta --> 0 limit of the U(N) theory does not converge to the ordinary SU(N) x
U(1) commutative theory, even at the planar limit. Finally, we comment on the
UV/IR mixing.Comment: 19 pages, Latex. 4 figures. v2: minor changes, refs. added. To appear
in Nucl.Phys.
Symmetry, stability, and computation of degenerate lasing modes
We present a general method to obtain the stable lasing solutions for the steady-state ab initio lasing theory (SALT) for the case of a degenerate symmetric laser in two dimensions (2D). We find that under most regimes (with one pathological exception), the stable solutions are clockwise and counterclockwise circulating modes, generalizing previously known results of ring lasers to all 2D rotational symmetry groups. Our method uses a combination of semianalytical solutions close to lasing threshold and numerical solvers to track the lasing modes far above threshold. Near threshold, we find closed-form expressions for both circulating modes and other types of lasing solutions as well as for their linearized Maxwell-Bloch eigenvalues, providing a simple way to determine their stability without having to do a full nonlinear numerical calculation. Above threshold, we show that a key feature of the circulating mode is its “chiral” intensity pattern, which arises from spontaneous symmetry breaking of mirror symmetry, and whose symmetry group requires that the degeneracy persists even when nonlinear effects become important. Finally, we introduce a numerical technique to solve the degenerate SALT equations far above threshold even when spatial discretization artificially breaks the degeneracy.United States. Army Research Office. Institute for Soldier Nanotechnologies (Grant W911NF-07-D-0004)Austrian Science Fund (Project SFB NextLite F49-P10)United States. Air Force Research Laboratory (Agreement FA8650-15-2-5220
A Close Quasar Pair in a Disk-Disk Galaxy Merger at z = 2.17
Most local massive galaxies, if not all, are believed to harbor a
supermassive black hole (SMBH) at the center. Galaxy mergers have long been
thought to drive strong gas inflows and accretion onto one or both central
SMBH, triggering single or dual quasars as a natural stage of the hierarchical
galaxy and SMBH evolution. While many dual active galactic nuclei -- the
low-luminosity counterparts of quasars -- have been observed at low redshift,
no unambiguous dual quasar is known at cosmic noon (z>~2) when both quasar
activity and global star formation density peaked. While a handful of dual
quasar candidates were known at z>1, competing explanations remained. Here we
report multi-wavelength observations of SDSS J0749+2255 as the first kpc-scale
dual quasar confirmed to be hosted by a galaxy merger at cosmic noon. Hubble
Space Telescope NIR imaging reveals extended host galaxies underlying the
compact double nuclei (separated by 0.46" or 3.8 kpc) and tidal features as
evidence for galactic interactions. We also present new multi-wavelength
observations, all lending support to the dual quasar hypothesis. Unlike the
low-redshift low-luminosity counterparts, the high-redshift dual quasar is
hosted by two massive compact disk-dominated galaxies, which may be critical
for efficient gas fueling onto the SMBHs in the early-stage merger. The
apparent lack of stellar bulges and that SDSS J0749+2255 already follows the
local SMBH mass-host stellar mass relation are at odds with the canonical
SMBH-host co-evolution picture and suggest that at least some SMBHs may have
formed before their host stellar bulges. While still at kpc-scale separations
where the host-galaxy gravitational potential dominates, the SMBHs may evolve
into a gravitationally bound binary system in ~0.22 Gyr. The merger products at
low redshift are expected to be gravitational wave sources for pulsar-timing
arrays (abridged).Comment: 79 pages, 17 figures, 6 tables; submitte
Tracking SMBH mergers from kpc to sub-pc scales with AXIS
Pairs of active galactic nuclei (AGN) are observational flags of
merger-driven SMBH growth, and represent an observable link between galaxy
mergers and gravitational wave (GW) events. Thus, studying these systems across
their various evolutionary phases can help quantify the role mergers play in
the growth of SMBHs as well as future GW signals expected to be detected by
pulsar timing arrays (PTAs). At the earliest stage, the system can be
classified as a "dual AGN" where the SMBHs are gravitationally unbound and have
typical separations <30 kpc, and at the latest stage the system can be
classified as a "binary AGN" where the two massive host galaxies have likely
been interacting for hundreds of megayears to gigayears. However, detecting and
confirming pairs of AGN is non-trivial, and is complicated by the unique
characteristics of merger-environments. To date, there are less than 50 X-ray
confirmed dual AGN and only 1 strong binary AGN candidate. AXIS will
revolutionize the field of dual AGN: the point-spread-function (PSF),
field-of-view (FOV), and effective area (Aeff) are expected to result in the
detection of hundreds to thousands of new dual AGN across the redshift range 0
< z < 4. The AXIS AGN surveys will result in the first X-ray study that
quantifies the frequency of dual AGN as a function of redshift up to z = 3.5.Comment: 17 pages, 5 figure
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