Chaos in Congress: Masculinity and Violence in the Congressional Struggle Over Kansas

According to Joanne Freeman\u27s recent book on congressional violence, in the years between 1830 and 1860, members of Congress engaged in \u27manly\u27 violence against one another more than seventy times. However, no issue caused more violent personal disputes in the legislature than slavery. In particular, the debate over the legal status of slavery in the Kansas Territory caused a panoply of incidents in Congress, including near-duel between John C. Breckinridge and Francis Cutting in 1854, Preston Brooks\u27 caning of Charles Sumner in 1856, and a brawl in the House of Representatives in 1858. This article examines how these lawmakers\u27 views on masculinity and slavery motivated their involvement in these incidents. Firstly, the article establishes Amy S. Greenberg’s dichotomy of martial and restrained masculinities as a lens of analysis; then it recounts each event and analyzes the masculine practices of each lawmaker. This analysis shows that these three violent encounters resulted from the practice of a specifically Southern iteration of martial manhood grounded in the service of slavery’s interests

Development of computer software to analyze entire LANDSAT scenes and to summarize classification results of variable-size polygons

The Forest Pest Management Division (FPMD) of the Pennsylvania Bureau of Forestry has the responsibility for conducting annual surveys of the State's forest lands to accurately detect, map, and appraise forest insect infestations. A standardized, timely, and cost-effective method of accurately surveying forests and their condition should enhance the probability of suppressing infestations. The repetitive and synoptic coverage provided by LANDSAT (formerly ERTS) makes such satellite-derived data potentially attractive as a survey medium for monitoring forest insect damage over large areas. Forest Pest Management Division personnel have expressed keen interest in LANDSAT data and have informally cooperated with NASA/Goddard Space Flight Center (GSFC) since 1976 in the development of techniques to facilitate their use. The results of this work indicate that it may be feasible to use LANDSAT digital data to conduct annual surveys of insect defoliation of hardwood forests

Henry Wells Lawrence Memorial Lectures, Number 4

Fourth volume of a series of annual addresses given in honor of Connecticut College Professor of History, Henry Wells, Lawrence.Contents are as follows:Causes and Growth of the American Revolution, Bernhard KnollenbergReligion and the Sceptical Tradition, Franklin L. Baumer, Yale University Erasmus: The Scholar and the World, Myron P. Gilmore, Harvard Universityhttps://digitalcommons.conncoll.edu/ccbooks/1010/thumbnail.jp

Spatial separation in a thermal mixture of ultracold 174^{174}Yb and 87^{87}Rb atoms

We report on the observation of unusually strong interactions in a thermal mixture of ultracold atoms which cause a significant modification of the spatial distribution. A mixture of $^{87}$Rb and $^{174}$Yb with a temperature of a few $\mu$K is prepared in a hybrid trap consisting of a bichromatic optical potential superimposed on a magnetic trap. For suitable trap parameters and temperatures, a spatial separation of the two species is observed. We infer that the separation is driven by a large interaction strength between $^{174}$Yb and $^{87}$Rb accompanied by a large three-body recombination rate. Based on this assumption we have developed a diffusion model which reproduces our observations

R Markdown: Integrating A Reproducible Analysis Tool into Introductory Statistics

Nolan and Temple Lang argue that “the ability to express statistical computations is an es- sential skill.” A key related capacity is the ability to conduct and present data analysis in a way that another person can understand and replicate. The copy-and-paste workflow that is an artifact of antiquated user-interface design makes reproducibility of statistical analysis more difficult, especially as data become increasingly complex and statistical methods become increasingly sophisticated. R Markdown is a new technology that makes creating fully-reproducible statistical analysis simple and painless. It provides a solution suitable not only for cutting edge research, but also for use in an introductory statistics course. We present experiential and statistical evidence that R Markdown can be used effectively in introductory statistics courses, and discuss its role in the rapidly-changing world of statistical computation

Lifetime Measurement of the 6s Level of Rubidium

We present a lifetime measurements of the 6s level of rubidium. We use a time-correlated single-photon counting technique on two different samples of rubidium atoms. A vapor cell with variable rubidium density and a sample of atoms confined and cooled in a magneto-optical trap. The 5P_{1/2} level serves as the resonant intermediate step for the two step excitation to the 6s level. We detect the decay of the 6s level through the cascade fluorescence of the 5P_{3/2} level at 780 nm. The two samples have different systematic effects, but we obtain consistent results that averaged give a lifetime of 45.57 +- 0.17 ns.Comment: 10 pages, 9 figure