18,240 research outputs found
Effect of strain rate and load cycling on the tensile behavior and air permeability of a coated fabric
Effect of strain rate and load cycling on tensile behavior and air permeability of coated fabric for inflatable decelerator syste
Evaluating the impact of a defender role-play intervention on adolescent's defender intentions and responses towards name-calling
Researchers and anti-bullying organisations have increasingly turned their attention to the role of bystanders in tackling bullying and peer victimisation (e.g. name-calling). The objective of this study was to develop and assess the impact of a role-play programme designed to strengthen adolescent’s defending behaviour to name-calling. This was measured in two contexts: defending intentions in an outgroup name-calling scenario and cyber-defender behaviour in a scripted online peer interaction. Participants (N = 121, Mage = 12.90 years) were randomly assigned to either a role-play condition or a control condition. Results showed that defender intentions in an outgroup name-calling scenario were higher in the role-play condition, compared to the control; in addition, cyber-defender behaviour was more likely and quicker in the role-play condition, compared to the control. Defender self-efficacy was found to be significantly higher in the role-play condition, and mediated the effect of the role-play programme on defender intentions. Findings also revealed that defender intentions were positively correlated with cyber-defender behaviour, highlighting a link between intentions and behaviour. Implications for theory and practice are discussed
Management of incidentally detected heart murmurs in dogs and cats
A dog or a cat has an incidentally detected heart murmur if the murmur is an unexpected discovery during a veterinary consultation that was not initially focused on the cardiovascular system. This document presents approaches for managing dogs and cats that have incidentally-detected heart murmurs, with an emphasis on murmur characteristics, signalment profiling, and multifactorial decision-making to choose an optimal course for a given patient
Spiky Strings on I-brane
We study rigidly rotating strings in the near horizon geometry of the 1+1
dimensional intersection of two orthogonal stacks of NS5-branes, the so called
I-brane background. We solve the equations of motion of the fundamental string
action in the presence of two form NS-NS fluxes that the I-brane background
supports and write down general form of conserved quantities. We further find
out two limiting cases corresponding to giant magnon and single spike like
strings in various parameter space of solutions.Comment: 17 pages, major restructuring of text, added a referenc
Searches for Gravitational Waves from Binary Neutron Stars: A Review
A new generation of observatories is looking for gravitational waves. These
waves, emitted by highly relativistic systems, will open a new window for ob-
servation of the cosmos when they are detected. Among the most promising
sources of gravitational waves for these observatories are compact binaries in
the final min- utes before coalescence. In this article, we review in brief
interferometric searches for gravitational waves emitted by neutron star
binaries, including the theory, instru- mentation and methods. No detections
have been made to date. However, the best direct observational limits on
coalescence rates have been set, and instrumentation and analysis methods
continue to be refined toward the ultimate goal of defining the new field of
gravitational wave astronomy.Comment: 30 pages, 5 Figures, to appear in "Short-Period Binary Stars:
Observations, Analyses, and Results", Ed.s Eugene F. Milone, Denis A. Leahy,
David W. Hobil
Dyonic Giant Magnons in CP^3: Strings and Curves at Finite J
This paper studies giant magnons in AdS_4 x CP^3 using both the string
sigma-model and the algebraic curve. We complete the dictionary of solutions by
finding the dyonic generalisation of the CP^1 string solution, which matches
the `small' giant magnon in the algebraic curve, and by pointing out that the
solution recently constructed by the dressing method is the `big' giant magnon.
We then use the curve to compute finite-J corrections to all cases, which for
the non-dyonic cases always match the AFZ result. For the dyonic RP^3 magnon we
recover the S^5 answer, but for the `small' and `big' giant magnons we obtain
new corrections.Comment: 22 pages, 3 figures, 2 tables. v2 adds note on breather solution, and
minor clarification
Methods for Reducing False Alarms in Searches for Compact Binary Coalescences in LIGO Data
The LIGO detectors are sensitive to a variety of noise transients of
non-astrophysical origin. Instrumental glitches and environmental disturbances
increase the false alarm rate in the searches for gravitational waves. Using
times already identified when the interferometers produced data of questionable
quality, or when the channels that monitor the interferometer indicated
non-stationarity, we have developed techniques to safely and effectively veto
false triggers from the compact binary coalescences (CBCs) search pipeline
Influence of synaptic depression on memory storage capacity
Synaptic efficacy between neurons is known to change within a short time
scale dynamically. Neurophysiological experiments show that high-frequency
presynaptic inputs decrease synaptic efficacy between neurons. This phenomenon
is called synaptic depression, a short term synaptic plasticity. Many
researchers have investigated how the synaptic depression affects the memory
storage capacity. However, the noise has not been taken into consideration in
their analysis. By introducing "temperature", which controls the level of the
noise, into an update rule of neurons, we investigate the effects of synaptic
depression on the memory storage capacity in the presence of the noise. We
analytically compute the storage capacity by using a statistical mechanics
technique called Self Consistent Signal to Noise Analysis (SCSNA). We find that
the synaptic depression decreases the storage capacity in the case of finite
temperature in contrast to the case of the low temperature limit, where the
storage capacity does not change
Comparison of Strangeness Production between A+A and p+p Reactions from 2 to 160 AGeV
The measured K ratios from heavy-ion reactions are compared with
the K ratios from p+p reactions over the energy range 2-160 AGeV. The
K/ enhancement in heavy-ion reactions is largest at the lower energies,
consistent with strangeness production in secondary scattering becoming
relatively more important than initial collisions near the kaon production
threshold. The enhancement decreases steadily from 4 to 160 AGeV, suggesting
that the same enhancement mechanism of hadronic rescattering and decay of
strings may be applicable over this full energy range. Based on existing data,
the mid-rapidity K ratio is predicted to be for the
forthcoming Pb+Pb reactions at 40 AGeV/c.Comment: 14 pages, 4 figures, submitted to Phys. Rev.
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