Evidence for the Strangeness S=+1 Pentaquark from LEPS and CLAS Experiments

There are now several experimental collaborations that have seen evidence for a narrow state in the mass spectrum of the ($nK^+$) system. Two of these experiments, from the LEPS collaboration in Japan and the CLAS collaboration in the USA, are described briefly. Both use similar photoproduction reactions with a $K^+K^-$ pair in the final state. In addition, data from the CLAS collaboration for the $\gamma p \to K_s K^+ n$ reaction are presented for the first time, which has no prominant peak in the ($nK^+$) mass spectrum when the $K_s$ angle is limited to forward angles.Comment: Hadron 2003 Conference Proceedings (5 pages

Global tropospheric chemistry: Chemical fluexes in the global atmosphere

In October 1987, NSF, NASA, and NOAA jointly sponsored a workshop at Columbia University to assess the experimental tools and analysis procedures in use and under development to measure and understand gas and particle fluxes across this critical air-surface boundary. Results are presented for that workshop. It is published to summarize the present understanding of the various measurement techniques that are available, identify promising new technological developments for improved measurements, and stimulate thinking about this important measurement challenge

1-1.4 Micron Spectral Atlas of Stars

We present a catalog of J-band (1.08 um to 1.35 um) stellar spectra at low resolution (R ~ 400). The targets consist of 105 stars ranging in spectral type from O9.5 to M7 and luminosity classes I through V. The relatively featureless spectra of hot stars, earlier than A4, can be used to remove the atmospheric features which dominate ground-based J-band spectroscopy. We measure equivalent widths for three absorption lines and nine blended features which we identify in the spectra. Using detailed comparison with higher resolution spectra, we demonstrate that low resolution data can be used for stellar classification, since several features depend on the effective temperature and gravity. For example The CN index (1.096 - 1.104 um) decreases with temperature, but the strength of a blended feature at 1.28 um (consisting of primarily P beta) increases. The slope of a star's spectrum can also be used to estimate its effective temperature. The luminosity class of a star correlates with the ratio of the Mg I (1.1831 um) line to a blend of several species at 1.16 um. Using these indicators, a star can be classified to within several subclasses. Fifteen stars with particularly high and low metal abundances are included in the catalog and some spectral dependence on metal abundance is also found.Comment: 35 pages, 10 figures (3a-e are in gif format. For complete high resolution figures, go to http://www.astro.ucla.edu/~malkan/newjspec/) ; Accepted for published in ApJS; For associated spectra files, see http://www.astro.ucla.edu/~malkan/newjspec

Threats of harm posted on Facebook: the viewing and response by friends

2013 Fall.Includes bibliographical references.This qualitative study explored how people define and respond to threatening language that is posted in Facebook. Basic Interpretive Qualitative Research was used to see how the 16 participants made meaning of threats that were posted in Facebook and how they responded to the posted threats. The data was collected through personal interviews with 16 traditional age college age men and women. The participants were asked a number of questions related to threatening language, including their personal definition as well as how they believed they would respond to threats and how they have responded to similar posts. The findings included how there is a large gap between how the user defines his or her friends and acquaintance as it relates to the electronic list of Facebook friends. How threats to social status was an identified fear via the use of Facebook. Threats were identified as directed toward others, and not toward oneself. The participants used Facebook for a variety of reasons ranging from academic, to social, to personal, but the use is in line with Facebook's mission, to connect people and not as much of a communication tool. Implications of this study may apply to threat assessment literature as well as working with bystander training

The Sabbath Rediscovered

The author celebrates a renewed appreciation of values that underlie the observance of the Sabbath. Thomas Hicks\u27 efforts to celebrate a more meaningful Sabbath revolve around some motifs rediscovered from the Jewish tradition

A Return to Updike\u27s Post-Pill Paradise

Thomas H. Hicks, professor of Psychology and Religious Studies at Sacred Heart University, presents an interpretation of John Updike\u27s novels Couples and Marry Me , and his book Self-Consciousness , a collection of autobiographical pieces. Prof. Hicks discusses classical and Christian themes in these works, adultery as a form of human anguish, sex as a substitute for religion, and the moral transitioning happening in the time the books were written

Updike\u27s Rabbit Novels: An American Epic

Critical study of John Updike\u27s four Rabbit novels