Satellites of the largest Kuiper Belt objects

We have searched the four brightest objects in the Kuiper Belt for the presence of satellites using the newly commissioned Keck Observatory Laser Guide Star Adaptive Optics system. Satellites are seen around three of the four objects: Pluto (whose satellite Charon is well-known and whose recently discovered smaller satellites are too faint to be detected), 2003 EL61 (where a second satellite is seen in addition to the previously known satellite), and 2003 UB313 (where a satellite is seen for the first time). The object 2005 FY9, the brightest Kuiper Belt object (KBO) after Pluto, does not have a satellite detectable within 0".4 with a brightness of more than 1% of the primary. The presence of satellites around three of the four brightest KBOs is inconsistent with the fraction of satellites in the Kuiper Belt at large at the 99.2% confidence level, suggesting a different formation mechanism for these largest KBO satellites. The two satellites of 2003 EL61, and the one satellite of 2003 UB313, with fractional brightnesses of 5% and 1.5%, and 2%, of their primaries, respectively, are significantly fainter relative to their primaries than other known KBO satellites, again pointing to possible differences in their origin

Boston University Chorus and Concert Choir, December 9, 1990

This is the concert program of the Boston University Chorus and Concert Choir performance on Sunday, December 9, 1990 at 2:00 p.m., at the Tsai Performance Center, 685 Commonwealth Avenue, Boston, Massachusetts. Works performed were If Ye Love Me by Thomas Tallis, I Peter 4:8 by Evan Keely, Mass by Igor Stravinsky, Gloria by Antonio Vivaldi, A New Year Carol by Benjamin Britten. Digitization for Boston University Concert Programs was supported by the Boston University Humanities Library Endowed Fund

Child sexual abuse and subsequent offending and victimisation: A 45 year follow-up study

This study investigates whether a disproportionate number of CSA victims subsequently perpetrate offences and experience future victimisation compared with people who have not been sexually abused. In a sample of 2,759 CSA victims who were abused between 1964 and 1995, it was found CSA victims were almost five times more likely than the general population to be charged with any offence than their non-abused counterparts, with strongest associations found for sexual and violent offences. CSA victims were also more likely to have been victims of crime, particularly crimes of a sexual or violent nature. This research highlights the need for therapeutic interventions targeted at adolescent male CSA victims, particularly with regard to offender treatment programs, where many programs currently do not allow for exploration of offenders’ own sexual victimisation

Candidate Members and Age Estimate of the Family of Kuiper Belt Object 2003 EL61

The collisional family of Kuiper belt object (KBO) 2003 EL61 opens the possibility for many interesting new studies of processes important in the formation and evolution of the outer solar system. As the first family in the Kuiper belt, it can be studied using techniques developed for studying asteroid families, although some modifications are necessary. Applying these modified techniques allows for a dynamical study of the 2003 EL61 family. The velocity required to change orbits is used to quantitatively identify objects near the collision. A method for identifying family members that have potentially diffused in resonances (like 2003 EL61) is also developed. Known family members are among the very closest KBOs to the collision and two new likely family members are identified: 2003 UZ117 and 1999 OY3. We also give tables of candidate family members which require future observations to confirm membership. We estimate that a minimum of ~1 GYr is needed for resonance diffusion to produce the current position of 2003 EL61, implying that the family is likely primordial. Future refinement of the age estimate is possible once (many) more resonant objects are identified. The ancient nature of the collision contrasts with the seemingly fresh surfaces of known family members, suggesting that our understanding of outer solar system surfaces is incomplete.Comment: 22 pages, 5 figures, accepted to AJ, author's cv available at http://www.gps.caltech.edu/~dari

California's Most Vulnerable Parents: When Maltreated Children Have Children

This report takes an in-depth look at the intersection between teen births, child maltreatment, and involvement with the child protection system. Putnam-Hornstein, along with other researchers at USC and the University of California, Berkeley, linked and then analyzed roughly 1.5 million California birth records and 1 million CPS records, with a second phase of research focusing on the maltreatment risk of children born to adolescent mothers.In 2012, California became one of the first states in the nation to extend foster youth status until age 21. Different programs and services will likely be required to adequately respond to the needs and circumstances of non-minor youth who remain in the foster care system, particularly in the area of parenting supports. This report finds that as many as one in three female youth in California may be parenting by the time they exit the foster care system on their 21st birthday

Good News, April 1990

A newsletter published for Deaf Catholics in Michigan, IN Good News Finding Ai

Sigma Gamma Epsilon Student Research Poster Session, Geological Society of America Meeting 2014, Vancouver, British Columbia, Canada

The 2014 Sigma Gamma Epsilon Undergraduate Research (Poster Session) took place during the 2014 Geological Society of American annual meeting in Vancouver, British Columbia, Canada on Tuesday, 21 October 2014. Fifty-two posters were presented at the SGE poster session. The National Council of Sigma Gamma Epsilon awarded the Austin A. Sartin Best Poster Award to Megan Flansburg a student at the College of William and Mary. Emily Lubicich, a student at the State University of New York - New Paltz, was awarded the National Council Best Poster Award

Class Notes

News about Linfield Alumn

Anxious to see you: Neuroendocrine mechanisms of social vigilance and anxiety during adolescence.

Social vigilance is a behavioral strategy commonly used in adverse or changing social environments. In animals, a combination of avoidance and vigilance allows an individual to evade potentially dangerous confrontations while monitoring the social environment to identify favorable changes. However, prolonged use of this behavioral strategy in humans is associated with increased risk of anxiety disorders, a major burden for human health. Elucidating the mechanisms of social vigilance in animals could provide important clues for new treatment strategies for social anxiety. Importantly, during adolescence the prevalence of social anxiety increases significantly. We hypothesize that many of the actions typically characterized as anxiety behaviors begin to emerge during this time as strategies for navigating more complex social structures. Here, we consider how the social environment and the pubertal transition shape neural circuits that modulate social vigilance, focusing on the bed nucleus of the stria terminalis and prefrontal cortex. The emergence of gonadal hormone secretion during adolescence has important effects on the function and structure of these circuits, and may play a role in the emergence of a notable sex difference in anxiety rates across adolescence. However, the significance of these changes in the context of anxiety is still uncertain, as not enough studies are sufficiently powered to evaluate sex as a biological variable. We conclude that greater integration between human and animal models will aid the development of more effective strategies for treating social anxiety

“Lifted Moments”: Emily Dickinson, Hymn Revision, and the Revival Music Meme-Plex

This essay focuses on Dickinson’s poem “The Soul has Bandaged moments - ” (Fr360), placing it in relation to several interrelated hymns (Independent, Unitarian, and gospel) that share a common pattern of imagery deriving from the popular “Crowning Day” motif. Through a linked sequence of paired readings, it shows how connections between two loosely related texts sharpen and become meaningful when the two texts are brought into dialog with a third text. Juxtaposing three overlapping pairs of lyrics—first by Daniel Webster Whittle and William Channing Gannett, then by Philip Doddridge and Emily Dickinson, and, finally, by Gannett and Dickinson (with a brief coda on Frances Harper)—this essay illustrates how texts that probably did not bear on one another directly may have related to one another indirectly as they worked within and responded to a shared, dynamic network (or meme-plex) of hymns that underwent constant adaptation and recombination throughout the nineteenth century