288 research outputs found
Richard Cosway as Teacher at Large
Thimblerigging, hanky-panky, and hugger-mugger : an unforgettable formula from Professor Cosway\u27s class in creditors\u27 rights. He used the formula to illustrate situations in which a court of equity or bankruptcy feels impelled to punish a miscreant somehow, regardless of the literal import of apparently applicable statutes. The same formula serves as a paradigm of Professor Cosway\u27s teaching technique. It is not that he practices the enumerated vices (heaven forbid), but that his use of the formula exemplifies certain qualities that have made his teaching so effective and popular, both in the classroom and as teacher-at-large to the profession
Sales—Automobile Warranties
A defective switch in a new automobile started a fire that destroyed the entire machine. Under the standard warranty given by all automobile manufacturers, the dealer\u27s only obligation was to supply a new switch. By so deciding, Norway v. Root illustrated the worthlessness of the standard warranty. But the importance of the case lies in the Washington court\u27s intimation that it might invalidate disclaimers of implied warranty in automobile sales were the issue squarely presented
Racial Minority Housing in Washington
O\u27Meara v. Washington State Bd. Against Discrimination\ called upon the Washington Supreme Court to pass for the first time on the constitutionality of Washington\u27s Anti-Discrimination Statute. The court invalidated the portion applicable to housing. This comment discusses the social and legal contexts in which the case was decided, the disposition of the case at the trial and appellate levels, and the merit of some alternative measures for preventing discrimination in housing
On the triple origin of blue stragglers
Blue straggler stars (BSSs) are stars observed to be hotter and bluer than
other stars with the same luminosity in their environment. As such they appear
to be much younger than the rest of the stellar population. Two main channels
have been suggested to produce such stars: (1) collisions between stars in
clusters or (2) mass transfer between, or merger of, the components of
primordial short-period binaries. Here we suggest a third scenario, in which
the progenitor of BSSs are formed in primordial (or dynamically formed)
hierarchical triple stars. In such configurations the dynamical evolution of
the triples through the Kozai mechanism and tidal friction can induce the
formation of very close inner binaries. Angular momentum loss in a magnetized
wind or stellar evolution could then lead to the merger of these binaries (or
to mass transfer between them) and produce BSSs in binary (or triple) systems.
We study this mechanism and its implications and show that it could naturally
explain many of the characteristics of the BSS population in clusters, most
notably the large binary fraction of long period BSS binaries; their unique
period-eccentricity distribution (with typical periods > 700 days); and the
typical location of these BSSs in the color-magnitude diagram, far from the
cluster turn-off point of their host clusters. We suggest that this scenario
has a major (possibly dominant) role in the formation of BSSs in open clusters
and give specific predictions for the the BSSs population formed in this
manner. We also note that triple systems may be the progenitors of the
brightest planetary nebulae in old elliptical galaxies, which possibly evolved
from BSSs.Comment: 10 pages, 6 figures. Minor additions; ApJ, in pres
Pathologic gene network rewiring implicates PPP1R3A as a central regulator in pressure overload heart failure
Heart failure is a leading cause of mortality, yet our understanding of the genetic interactions underlying this disease remains incomplete. Here, we harvest 1352 healthy and failing human hearts directly from transplant center operating rooms, and obtain genome-wide genotyping and gene expression measurements for a subset of 313. We build failing and non-failing cardiac regulatory gene networks, revealing important regulators and cardiac expression quantitative trait loci (eQTLs). PPP1R3A emerges as a regulator whose network connectivity changes significantly between health and disease. RNA sequencing after PPP1R3A knockdown validates network-based predictions, and highlights metabolic pathway regulation associated with increased cardiomyocyte size and perturbed respiratory metabolism. Mice lacking PPP1R3A are protected against pressure-overload heart failure. We present a global gene interaction map of the human heart failure transition, identify previously unreported cardiac eQTLs, and demonstrate the discovery potential of disease-specific networks through the description of PPP1R3A as a central regulator in heart failure
Accretion of Planetary Material onto Host Stars
Accretion of planetary material onto host stars may occur throughout a star's
life. Especially prone to accretion, extrasolar planets in short-period orbits,
while relatively rare, constitute a significant fraction of the known
population, and these planets are subject to dynamical and atmospheric
influences that can drive significant mass loss. Theoretical models frame
expectations regarding the rates and extent of this planetary accretion. For
instance, tidal interactions between planets and stars may drive complete
orbital decay during the main sequence. Many planets that survive their stars'
main sequence lifetime will still be engulfed when the host stars become red
giant stars. There is some observational evidence supporting these predictions,
such as a dearth of close-in planets around fast stellar rotators, which is
consistent with tidal spin-up and planet accretion. There remains no clear
chemical evidence for pollution of the atmospheres of main sequence or red
giant stars by planetary materials, but a wealth of evidence points to active
accretion by white dwarfs. In this article, we review the current understanding
of accretion of planetary material, from the pre- to the post-main sequence and
beyond. The review begins with the astrophysical framework for that process and
then considers accretion during various phases of a host star's life, during
which the details of accretion vary, and the observational evidence for
accretion during these phases.Comment: 18 pages, 5 figures (with some redacted), invited revie
Prime Focus Spectrograph (PFS) for the Subaru Telescope: Overview, recent progress, and future perspectives
PFS (Prime Focus Spectrograph), a next generation facility instrument on the
8.2-meter Subaru Telescope, is a very wide-field, massively multiplexed,
optical and near-infrared spectrograph. Exploiting the Subaru prime focus, 2394
reconfigurable fibers will be distributed over the 1.3 deg field of view. The
spectrograph has been designed with 3 arms of blue, red, and near-infrared
cameras to simultaneously observe spectra from 380nm to 1260nm in one exposure
at a resolution of ~1.6-2.7A. An international collaboration is developing this
instrument under the initiative of Kavli IPMU. The project is now going into
the construction phase aiming at undertaking system integration in 2017-2018
and subsequently carrying out engineering operations in 2018-2019. This article
gives an overview of the instrument, current project status and future paths
forward.Comment: 17 pages, 10 figures. Proceeding of SPIE Astronomical Telescopes and
Instrumentation 201
Self-Reactivities to the Non-Erythroid Alpha Spectrin Correlate with Cerebral Malaria in Gabonese Children
BACKGROUND: Hypergammaglobulinemia and polyclonal B-cell activation commonly occur in Plasmodium sp. infections. Some of the antibodies produced recognize self-components and are correlated with disease severity in P. falciparum malaria. However, it is not known whether some self-reactive antibodies produced during P. falciparum infection contribute to the events leading to cerebral malaria (CM). We show here a correlation between self-antibody responses to a human brain protein and high levels of circulating TNF alpha (TNFα), with the manifestation of CM in Gabonese children. METHODOLOGY: To study the role of self-reactive antibodies associated to the development of P. falciparum cerebral malaria, we used a combination of quantitative immunoblotting and multivariate analysis to analyse correlation between the reactivity of circulating IgG with a human brain protein extract and TNFα concentrations in cohorts of uninfected controls (UI) and P. falciparum-infected Gabonese children developing uncomplicated malaria (UM), severe non-cerebral malaria (SNCM), or CM. RESULTS/CONCLUSION: The repertoire of brain antigens recognized by plasma IgGs was more diverse in infected than in UI individuals. Anti-brain reactivity was significantly higher in the CM group than in the UM and SNCM groups. IgG self-reactivity to brain antigens was also correlated with plasma IgG levels and age. We found that 90% of CM patients displayed reactivity to a high-molecular mass band containing the spectrin non-erythroid alpha chain. Reactivity with this band was correlated with high TNFα concentrations in CM patients. These results strongly suggest that an antibody response to brain antigens induced by P. falciparum infection may be associated with pathogenic mechanisms in patients developing CM
Extrinsic Rewards and Intrinsic Motives: Standard and Behavioral Approaches to Agency and Labor Markets
Employers structure pay and employment relationships to mitigate agency problems. A large literature in economics documents how the resolution of these problems shapes personnel policies and labor markets. For the most part, the study of agency in employment relationships relies on highly stylized assumptions regarding human motivation, e.g., that employees seek to earn as much money as possible with minimal effort. In this essay, we explore the consequences of introducing behavioral complexity and realism into models of agency within organizations. Specifically, we assess the insights gained by allowing employees to be guided by such motivations as the desire to compare favorably to others, the aspiration to contribute to intrinsically worthwhile goals, and the inclination to reciprocate generosity or exact retribution for perceived wrongs. More provocatively, from the standpoint of standard economics, we also consider the possibility that people are driven, in ways that may be opaque even to themselves, by the desire to earn social esteem or to shape and reinforce identity
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