A New Low-Mass Eclipsing Binary from SDSS-II

We present observations of a new low-mass double-lined eclipsing binary system discovered using repeat observations of the celestial equator from the Sloan Digital Sky Survey II. Using near-infrared photometry and optical spectroscopy we have measured the properties of this short-period [P=0.407037(14) d] system and its two components. We find the following parameters for the two components: M_1=0.272+/-0.020 M_sun, R_1=0.268+/-0.010 R_sun, M_2=0.240+/-0.022 M_sun, R_2=0.248+/-0.0090 R_sun, T_1=3320+/-130 K, T_2=3300+/-130 K. The masses and radii of the two components of this system agree well with theoretical expectations based on models of low-mass stars, within the admittedly large errors. Future synoptic surveys like Pan-STARRS and LSST will produce a wealth of information about low-mass eclipsing systems and should make it possible, with an increased reliance on follow-up observations, to detect many systems with low-mass and sub-stellar companions. With the large numbers of objects for which these surveys will produce high-quality photometry, we suggest that it becomes possible to identify such systems even with sparse time sampling and a relatively small number of individual observations.Comment: 15 Pages, 9 Figures, 6 Tables. Replaced with version accepted to Ap

Policy uncertainty: a new indicator

The damaging impact of economic uncertainty on growth has been reasonably well studied - but what happens when there is uncertainty about economic policy-making? Nicholas Bloom and colleagues have developed a measure of this distinct kind of uncertainty, one that shows the value of restoring stability to current policy actions.US economic policy, global financial markets,

A Migration Study of \u3ci\u3eStelidota Geminata\u3c/i\u3e (Coleoptera: Nitidulidae)

The strawberry sap beetle, Stelidota geminata (Say), is a major pest of strawberries in the northeastern United States. Further knowledge of the migratory habits of this insect pest can enhance the effectiveness of pest management strategies. This nitidulid was shown to migrate from its overwintering sites to one of its primary reproductive sites, strawberry fields, in late May. The beetle population peaked in the third week in July, 1993 in the strawberry field and then gradually declined. In 1994, the peak, as well as the total population, was much greater than in 1993. Furthermore, S. geminata was concentrated in the transition areas surrounding the strawberry fields prior to the ripening of the fruit

Astrometric Microlensing Constraints on a Massive Body in the Outer Solar System with Gaia

A body in Solar orbit beyond the Kuiper belt exhibits an annual parallax that exceeds its apparent proper motion by up to many orders of magnitude. Apparent motion of this body along the parallactic ellipse will deflect the angular position of background stars due to astrometric microlensing ("induced parallax"). By synoptically sampling the astrometric position of background stars over the entire sky, constraints on the existence (and basic properties) of a massive nearby body may be inferred. With a simple simulation, we estimate the signal-to-noise for detecting such a body -- as function of mass, heliocentric distance, and ecliptic latitude -- using the anticipated sensitivity and temporal cadences from Gaia (launch 2011). A Jupiter-mass (M_Jup) object at 2000 AU is detectable by Gaia over the whole sky above 5-sigma, with even stronger constraints if it lies near the ecliptic plane. Hypotheses for the mass (~3M_Jup), distance (~20,000 AU) and location of the proposed perturber ("Planet X") which gives rise to long-period comets may be testable.Comment: 17 pages, 6 figures. Figures revised, new figure added, minor text revisions. Accepted to ApJ, to appear in the Dec 10, 2005 issue (v635

Measuring economic policy uncertainty

We develop a new index of economic policy uncertainty (EPU) based on newspaper coverage frequency. Several types of evidence – including human readings of 12,000 newspaper articles – indicate that our index proxies for movements in policy-related economic uncertainty. Our US index spikes near tight presidential elections, Gulf Wars I and II, the 9/11 attacks, the failure of Lehman Brothers, the 2011 debt-ceiling dispute and other major battles over fiscal policy. Using firm-level data, we find that policy uncertainty raises stock price volatility and reduces investment and employment in policy-sensitive sectors like defense, healthcare, and infrastructure construction. At the macro level, policy uncertainty innovations foreshadow declines in investment, output, and employment in the United States and, in a panel VAR setting, for 12 major economies. Extending our US index back to 1900, EPU rose dramatically in the 1930s (from late 1931) and has drifted upwards since the 1960s

Higher policy uncertainty curbs business investment and employment growth

The years following the global economic crisis of 2008-2009 have been marked by policy uncertainty, both in the US and across the world. In new research, Scott R. Baker, Nicholas Bloom, and Steven Davis develop an index of economic policy uncertainty to examine how this uncertainty shapes economic outcomes. Using data going back to 1900 and extending coverage to 11 major economies, they find that heightened levels of policy uncertainty leads to firms reducing investment and employment, which in turn contributes to the sluggish growth which many economies have experienced in recent years

Spare the Rod, Spoil the Child? A Legal Framework for Recent Corporal Punishment Proposals

This comment will highlight some of the legal concerns raised by legislative proposals advocating the introduction of corporal punishment into the American juvenile court. The comment will begin by reviewing the historical use of corporal punishment, contrasting the decline of corporal punishment in the criminal justice system with its continued use in the school system. Although the United States Supreme Court has held that school children are not entitled to the protection of the Eighth Amendment when they are paddled, the comment will contend that ordering juvenile offenders to corporal punishment must be subject to review under the Eighth and Fourteenth Amendments ,of the United States Constitution. Under such scrutiny, paddling in juvenile court violates not only the Eighth Amendment protection against cruel and unusual punishment, but also infringes upon a juvenile\u27s right to bodily integrity under the Fourteenth Amendment. Ultimately, the comment will suggest policy considerations that should have accompanied the latest debate over an old subject: corporal punishment

Spare the Rod, Spoil the Child? A Legal Framework for Recent Corporal Punishment Proposals

This comment will highlight some of the legal concerns raised by legislative proposals advocating the introduction of corporal punishment into the American juvenile court. The comment will begin by reviewing the historical use of corporal punishment, contrasting the decline of corporal punishment in the criminal justice system with its continued use in the school system. Although the United States Supreme Court has held that school children are not entitled to the protection of the Eighth Amendment when they are paddled, the comment will contend that ordering juvenile offenders to corporal punishment must be subject to review under the Eighth and Fourteenth Amendments ,of the United States Constitution. Under such scrutiny, paddling in juvenile court violates not only the Eighth Amendment protection against cruel and unusual punishment, but also infringes upon a juvenile\u27s right to bodily integrity under the Fourteenth Amendment. Ultimately, the comment will suggest policy considerations that should have accompanied the latest debate over an old subject: corporal punishment

Reliable and accurate diagnostics from highly multiplexed sequencing assays

Scalable, inexpensive, and secure testing for SARS-CoV-2 infection is crucial for control of the novel coronavirus pandemic. Recently developed highly multiplexed sequencing assays (HMSAs) that rely on high-throughput sequencing can, in principle, meet these demands, and present promising alternatives to currently used RT-qPCR-based tests. However, reliable analysis, interpretation, and clinical use of HMSAs requires overcoming several computational, statistical and engineering challenges. Using recently acquired experimental data, we present and validate a computational workflow based on kallisto and bustools, that utilizes robust statistical methods and fast, memory efficient algorithms, to quickly, accurately and reliably process high-throughput sequencing data. We show that our workflow is effective at processing data from all recently proposed SARS-CoV-2 sequencing based diagnostic tests, and is generally applicable to any diagnostic HMSA