1,508 research outputs found
Unfair and Deceptive Legislation: The Case for Finding North Carolina General Statutes Section 75-1.1 Unconstitutionally Vague as Applied to an Alleged Breach of a Commercial Contract
The North Carolina General Assembly enacted the Unfair and Deceptive Trade Practices Act in 1969. The original purpose of the act was to protect consumers from predatory business practices. Nonetheless, the North Carolina Supreme Court has sanctioned an expanded application of the act to cases involving sophisticated commercial parties. This article will attempt to demonstrate that it is poor public policy to apply section 75-1.1 to cases based upon an alleged breach of a commercial contract and that in at least those instances section 75-1.1 is unconstitutionally vague
Unfair and Deceptive Legislation: The Case for Finding North Carolina General Statutes Section 75-1.1 Unconstitutionally Vague as Applied to an Alleged Breach of a Commercial Contract
The North Carolina General Assembly enacted the Unfair and Deceptive Trade Practices Act in 1969. The original purpose of the act was to protect consumers from predatory business practices. Nonetheless, the North Carolina Supreme Court has sanctioned an expanded application of the act to cases involving sophisticated commercial parties. This article will attempt to demonstrate that it is poor public policy to apply section 75-1.1 to cases based upon an alleged breach of a commercial contract and that in at least those instances section 75-1.1 is unconstitutionally vague
Geologic remote sensing with radar
Viewgraphs on geologic remote sensing with radar are presented. Ongoing studies concentrate on: weathering processes, volcanic processes, land degradation, tectonic processes, and surface and subsurface mapping
A Parameter-Free Tour of the Binary Black Hole Population
The continued operation of the Advanced LIGO and Advanced Virgo
gravitational-wave detectors is enabling the first detailed measurements of the
mass, spin, and redshift distributions of the merging binary black hole
population. Our present knowledge of these distributions, however, is based
largely on strongly parameteric models; such models typically assume the
distributions of binary parameters to be superpositions of power laws, peaks,
dips, and breaks, and then measure the parameters governing these "building
block" features. Although this approach has yielded great progress in initial
characterization of the compact binary population, the strong assumptions
entailed leave it often unclear which physical conclusions are driven by
observation and which by the specific choice of model. In this paper, we
instead model the merger rate of binary black holes as an unknown
autoregressive process over the space of binary parameters, allowing us to
measure the distributions of binary black hole masses, redshifts, component
spins, and effective spins with near-complete agnosticism. We find the primary
mass spectrum of binary black holes to be doubly-peaked, with a fairly flat
continuum that steepens at high masses. We identify signs of unexpected
structure in the redshift distribution of binary black holes: a
uniform-in-comoving volume merger rate at low redshift followed by a rise in
the merger rate beyond redshift . Finally, we find that the
distribution of black hole spin magnitudes is unimodal and concentrated at
small but non-zero values, and that spin orientations span a wide range of
spin-orbit misalignment angles but are also unlikely to be truly isotropic.Comment: 24 pages, 14 figures; code can be found at
http://github.com/tcallister/autoregressive-bbh-inference and data can be
download from https://zenodo.org/record/761609
Uncertainty in marine weather routing
Weather routing methods are essential for planning routes for commercial
shipping and recreational craft. This paper provides a methodology for
quantifying the significance of numerical error and performance model
uncertainty on the predictions returned from a weather routing algorithm. The
numerical error of the routing algorithm is estimated by solving the optimum
path over different discretizations of the environment. The uncertainty
associated with the performance model is linearly varied in order to quantify
its significance. The methodology is applied to a sailing craft routing
problem: the prediction of the voyaging time for an ethnographic voyaging canoe
across long distance voyages in Polynesia. We find that the average numerical
error is , corresponding to hours for an average voyage length
of hours. An uncertainty level of in the performance model is
seen to correspond to a standard deviation of of the voyaging
time. These results illustrate the significance of considering the influence of
numerical error and performance uncertainty when performing a weather routing
study
Digging the population of compact binary mergers out of the noise
Coalescing compact binaries emitting gravitational wave (GW) signals, as recently detected by
the Advanced LIGO-Virgo network, constitute a population over the multi-dimensional space
of component masses and spins, redshift, and other parameters. Characterizing this population
is a major goal of GWobservations and may be approached via parametric models.We demonstrate
hierarchical inference for such models with a method that accounts for uncertainties in
each binary merger’s individual parameters, for mass-dependent selection effects, and also
for the presence of a second population of candidate events caused by detector noise. Thus,
the method is robust to potential biases from a contaminated sample and allows us to extract
information from events that have a relatively small probability of astrophysical origin
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