General Relativistic Decompression of Binary Neutron Stars During Dynamic Inspiral

We investigate the dynamic stability of inspiraling neutron stars by performing multiple-orbit numerical relativity simulations of the binary neutron star inspiral process. By introducing eccentricities in the orbits of the neutron stars, significant changes in orbital separation are obtained within orbital timescales. We find that as the binary system evolves from apastron to periastron (as the binary separation decreases), the central rest mass density of each star decreases, thus stabilizing the stars against individual prompt collapse. As the binary system evolves from periastron to apastron, the central rest mass density increases; the neutron stars re-compress as the binary separation increases.Comment: Figure replaced, final published version. Dedicated to Rafael Sorkin on his 60th birthda

A Case of Recurrent Dissociative Episodes in a Patient with Congenital Defects

Case Report Marie, a 30 year old American-born Hispanic female, was first seen in the emergency room with suicidal ideation (the impulse to jump in front of an oncoming car), depression, anxiety, and distress about always getting attacked so much

Conflicts between the Massachusetts Supreme Judicial Court and the Legislature: Campaign Finance Reform and Same-Sex Marriage

[Excerpt] This article will examine recent interactions and dialogues between the Supreme Judicial Court of Massachusetts (“SJC” or “Supreme Judicial Court”) and the Massachusetts State Legislature. The interactions between courts and legislatures are often cordial, but sometimes these interactions are also highly conflictual. During the 1980s and 1990s, the relationship between the Massachusetts legislature and the Supreme Court was indeed mainly cooperative. Recently, however, in several high profile cases the Supreme Court has been willing to challenge directly the decisions of the legislature and vice versa. Among other controversies, the Court’s 2002 decision requiring that the state legislature fund the campaign finance reform initiative known in Massachusetts as the Clean Elections law, and the Court’s 2003 decision that same-sex couples could not be denied marriage licenses under the state constitution, have created a great deal of friction between the Supreme Court and the legislature. This article will examine these controversies in some detail in order to gain a better understanding of the different institutional perspectives and different institutional wills that drive the relationship between these two institutions of government. My conclusion is that there needs to be greater communication between the legislative and judicial branches, and that each institution needs to have greater respect for the other body

Phylogeny and systematics of the giant rhinoceros beetles (Scarabaeidae: Dynastini)

This report contains the first inclusive phylogenetic analysis and taxonomic structure for the genera presently included within the scarabaeid tribe Dynastini. The study was based upon morphological, biogeographic and molecular data and yielded direct support for the recognition of three subtribes in the Dynastini: Dynastina MacLeay, New Status (Dynastes Kirby, Augosoma Burmeister, Megasoma Kirby, Golofa Hope), Xylotrupina Hope, New Status (Xylotrupes Hope, Allomyrina Arrow, Trypoxylus Minck, Xyloscaptes Prell) and Chalcosomina Rowland and Miller, New Subtribe (Chalcosoma Hope, Haploscapanes Arrow, Beckius Dechambre, Eupatorus Burmeister, Pachyoryctes Arrow). The results provide indirect but significant support for the origin of the tribe Dynastini to be of an age no later than the early Late Cretaceous. Molecular and morphological evidence suggests that Eupatorus as constituted in current taxonomic literature is not monophyletic, and taxonomic alternatives are discussed to address this deficiency. A plausible explanation is also provided for the perplexing use by F. W. Hope of the family-group names Xylotrupidae and Dynastidae

Long range science scheduling for the Hubble Space Telescope

Observations with NASA's Hubble Space Telescope (HST) are scheduled with the assistance of a long-range scheduling system (SPIKE) that was developed using artificial intelligence techniques. In earlier papers, the system architecture and the constraint representation and propagation mechanisms were described. The development of high-level automated scheduling tools, including tools based on constraint satisfaction techniques and neural networks is described. The performance of these tools in scheduling HST observations is discussed

Evolution of the Potential Energy Surface with Size for Lennard-Jones Clusters

Disconnectivity graphs are used to characterize the potential energy surfaces of Lennard-Jones clusters containing 13, 19, 31, 38, 55 and 75 atoms. This set includes members which exhibit either one or two `funnels' whose low-energy regions may be dominated by a single deep minimum or contain a number of competing structures. The graphs evolve in size due to these specific size effects and an exponential increase in the number of local minima with the number of atoms. To combat the vast number of minima we investigate the use of monotonic sequence basins as the fundamental topographical unit. Finally, we examine disconnectivity graphs for a transformed energy landscape to explain why the transformation provides a useful approach to the global optimization problem.Comment: 13 pages, 8 figures, revte