210 research outputs found
The Case for CAPSL: Architectural Solutions to Licensing and Distribution in Emerging Music Markets
Compulsory licensing in music has paved the way for a limited class of new noninteractive services. However, innovation and competition are stifled in the field of interactive or otherwise novel services due to high transaction costs inherent in direct licensing. While the creation of a new compulsory license available to a wider array of services may facilitate growth and diversity in new markets, it is unlikely that the legislative process can deliver a new compulsory regime in time to serve relevant interests. Furthermore, the risk exists that legislation written in response to contemporary technology will likely fail to recognize the diversity within the music industry, and therefore will underserve both artists and potential licensees. As such, this brief argues for the creation and adoption of a new standardized protocol for artists and labels to announce the availability of new content with attached standardized licensing terms for automated integration into the catalogs of new or existing digital music services. Such a protocol would allow for automated systems of pricing, distribution, and tracking to reduce transaction costs, increase market transparency, and commodify user participation
Kinematic strangeness production in cluster hadronization
We present a modification to the non-perturbative strangeness production mechanisms in the Monte-Carlo event generator Herwig in order to make the processes more dynamic and collective. We compare the model to a series of observables for soft physics at both LEP and LHC
Application of a Zero-latency Whitening Filter to Compact Binary Coalescence Gravitational-wave Searches
Joint electromagnetic and gravitational-wave (GW) observation is a major goal
of both the GW astronomy and electromagnetic astronomy communities for the
coming decade. One way to accomplish this goal is to direct follow-up of GW
candidates. Prompt electromagnetic emission may fade quickly, therefore it is
desirable to have GW detection happen as quickly as possible. A leading source
of latency in GW detection is the whitening of the data. We examine the
performance of a zero-latency whitening filter in a detection pipeline for
compact binary coalescence (CBC) GW signals. We find that the filter reproduces
signal-to-noise ratio (SNR) sufficiently consistent with the results of the
original high-latency and phase-preserving filter for both noise and artificial
GW signals (called "injections"). Additionally, we demonstrate that these two
whitening filters show excellent agreement in value, a discriminator
for GW signals.Comment: 8 pages, 12 figure
Parton color reconnection in Herwig 7 using a spacetime event topology
Herwig 7 is a general-purpose Monte Carlo generator of particle collisions
comprising both hard perturbative as well as soft phenomenological physics.
Herwig is therefore capable to describe the entire final state of hadronized
particles in a collision event. A spacetime topology of a parton system
entering hadronization is fully described and tested for the first time. A
combination of information from particles momenta and spacetime positions is
utilized to minimize a boost-invariant distance measure of the parton system.
We present a reasonable agreement of the model with a selection of experimental
data and conclude that spacetime event topology can be meaningfully used in the
further development.Comment: Contribution to: ICHEP 202
Utilizing Weightlifting for Cycling Performance
Abstract available in the 9th Annual Coaches and Sport Science College
The GstLAL Search Analysis Methods for Compact Binary Mergers in Advanced LIGO's Second and Advanced Virgo's First Observing Runs
After their successful first observing run (September 12, 2015 - January 12,
2016), the Advanced LIGO detectors were upgraded to increase their sensitivity
for the second observing run (November 30, 2016 - August 26, 2017). The
Advanced Virgo detector joined the second observing run on August 1, 2017. We
discuss the updates that happened during this period in the GstLAL-based
inspiral pipeline, which is used to detect gravitational waves from the
coalescence of compact binaries both in low latency and an offline
configuration. These updates include deployment of a zero-latency whitening
filter to reduce the over-all latency of the pipeline by up to 32 seconds,
incorporation of the Virgo data stream in the analysis, introduction of a
single-detector search to analyze data from the periods when only one of the
detectors is running, addition of new parameters to the likelihood ratio
ranking statistic, increase in the parameter space of the search, and
introduction of a template mass-dependent glitch-excision thresholding method.Comment: 12 pages, 7 figures, to be submitted to Phys. Rev. D, comments
welcom
Refphase: Multi-sample phasing reveals haplotype-specific copy number heterogeneity
Most computational methods that infer somatic copy number alterations (SCNAs) from bulk sequencing of DNA analyse tumour samples individually. However, the sequencing of multiple tumour samples from a patient’s disease is an increasingly common practice. We introduce Refphase, an algorithm that leverages this multi-sampling approach to infer haplotype-specific copy numbers through multi-sample phasing. We demonstrate Refphase’s ability to infer haplotype-specific SCNAs and characterise their intra-tumour heterogeneity, to uncover previously undetected allelic imbalance in low purity samples, and to identify parallel evolution in the context of whole genome doubling in a pan-cancer cohort of 336 samples from 99 tumours
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