The Price of Social Perception: Effects of Positive and Negative Feedback in Public and Private Spheres

This study examined how feedback affects choice behavior in public and private spheres. Seventy-five undergraduate students (19 men,56 women) participated. Two conditions were presented on a concurrent schedule of MIXED VR30-FR1. Under Condition 1, 5 points were awarded after completing theVR30. Following the FRl, 0-4 points were subtracted and participants received negative feedback. Under Condition 2, 1pointwas awarded following completion of the VR30. Participants received an additional 1point and positive feedback following the FRl. The private group wore headphones; the public group had feedback broadcasted in public. The presupposition that feedback in public would cause more responding in the second condition was not supported. There were significant differences between choice behavior in men and women

Eclipses during the 2010 eruption of the recurrent nova U Scorpii

The eruption of the recurrent nova U Scorpii on 2010 January 28 is now the all-time best observed nova event. We report 36,776 magnitudes throughout its 67 day eruption, for an average of one measure every 2.6 minutes. This unique and unprecedented coverage is the first time that a nova has had any substantial amount of fast photometry. With this, two new phenomena have been discovered: the fast flares in the early light curve seen from days 9-15 (which have no proposed explanation) and the optical dips seen out of eclipse from days 41-61 (likely caused by raised rims of the accretion disk occulting the bright inner regions of the disk as seen over specific orbital phases). The expanding shell and wind cleared enough from days 12-15 so that the inner binary system became visible, resulting in the sudden onset of eclipses and the turn-on of the supersoft X-ray source. On day15, a strong asymmetry in the out-of-eclipse light points to the existence of the accretion stream. The normal optical flickering restarts on day 24.5. For days 15-26, eclipse mapping shows that the optical source is spherically symmetric with a radius of 4.1 R⊙. For days 26-41, the optical light is coming from a rim-bright disk of radius 3.4 R ⊙. For days 41-67, the optical source is a center-bright disk of radius 2.2 R⊙. Throughout the eruption, the colors remain essentially constant. We present 12 eclipse times during eruption plus five just after the eruption

Economic importance, breeding objectives and achievements

This chapter reviews the historical context, economic importance, objectives and achievements to-date for many of the more important conifers undergoing domestification throught genetic improvement programs around the world. These provide examples of the context in which genomic technologies will have an impact in forestry. Unlike many other crop plants and livestock animals, forest trees have only been exposed to a few cycles of breeding and selection, and most retain very large amounts of genetic variation in natural populations. These factors present both opportunities and hurdles in the effective application of genomic technologies to existing operational breeding programs

Economic importance, breeding objectives and achievements

This chapter reviews the historical context, economic importance, objectives and achievements to-date for many of the more important conifers undergoing domestification throught genetic improvement programs around the world. These provide examples of the context in which genomic technologies will have an impact in forestry. Unlike many other crop plants and livestock animals, forest trees have only been exposed to a few cycles of breeding and selection, and most retain very large amounts of genetic variation in natural populations. These factors present both opportunities and hurdles in the effective application of genomic technologies to existing operational breeding programs