Chandra Observations of SNR 1987A

We report on the results of our monitoring program of the X-ray remnant of supernova 1987A with the {\it Chandra X-Ray Observatory}. We have performed two new observations during the {\it Chandra} Cycle 3 period, bringing the total to six monitoring observations over the past three years. These six observations provide a detailed time history of the birth of a new supernova remnant in X-rays. The high angular resolution images indicate that soft X-ray bright knots are associated with the optical spots, while hard X-ray features are better correlated with radio images. We interpret this in terms of a model in which fast shocks propagating through the circumstellar HII region produce the hard X-ray and radio emission, while the soft X-ray and optical emission arise in slower shocks entering into dense knots in the circumstellar inner ring. New observations begin to show changes in the morphology that may herald a new stage in the development of this incipient supernova remnant. The observed X-ray fluxes increase by nearly a factor of three over the last 30 months. The X-ray remnant is expanding at a velocity of $\sim$5000 km s$^{-1}$.Comment: 8 pages, 6 figures, 2 color figures, To appear in AdSpR (Proceedings 34th COSPAR Synposium E1.4 "High Energy Studies of Supernova Remnants and Neutron stars" For high resolution color figures contact [email protected]

Risky facilities: analysis of crime concentration in high-rise buildings

This paper investigates the security of high rise high density accommodation at the Gold Coast – a premier Australian holiday destination. Surfers Paradise has one of the highest population densities in Australia at 3,279 persons per square kilometre and over 70 percent of the residential population live in buildings classed as high density within a mix of tourist apartments and units. The paper explores how the levels of place management and guardianship relate to the volume and mix of crimes occurring in high-rise apartment buildings. • Foreword: Current town planning and housing policies suggest that in the very near future, housing density in major Australian cities will be much higher than current levels. To date, little attention has been paid to how these policy shifts will impact levels of crime and fear of crime. The aim of this research is to contribute to the development of strategic policy for the secure management of high-density housing. By analysing actual rates and types of crime, guardianship levels, building management styles and perceptions of fear of crime, the research will reveal how planning policies and high-rise building management styles can coalesce to create safer vertical communities. The research focuses on high-rise apartments and touristic buildings on the Gold Coast (specifically Surfers Paradise) and identifies the disproportionate concentration of crimes among a handful of buildings. Results may help state and local governments in Australia to avoid repeating the housing policy mistakes experienced by other countries

Gender Bending and Bending Gender (Re)Creating Aesthetic Realities of Organization Practices

The following paper incorporates various writing genres including fiction, narrative, and scholarly discourse to demonstrate the potential importance of aesthetic theory for transforming gendered organizational practices. It starts off with Kelly‘s, a student of organizational communication, ―final exam‖ essay, which explores the gendered politics of promotion. Her professor‘s response explores the gendered politics of ―doing feminism.‖ Taken individually, Kelly and Dr. McGuire (re)create an aesthetic reality of traditional, essentializing organizational practices. Taken together, they (re)create aesthetic meanings that pose formidable challenges and potential transformations for the way we ―do gender‖ organizationally. In the end, this paper or ―petite narrative‖ stands as an aesthetic challenge towards transforming the way we ―do (feminist organization) scholarship‖ organizationally

How efficiently can we target prolific offenders?

This report looks at the magnitude of crime perpetrated by the most active offenders in a particular police area and places it in the context of a research programme which seeks to integrate and render locally useful the major findings of applied criminology. The results are contrasting. In terms of all crime, the group of offenders nominated did not appear to contribute substantially to levels of crime. The level of burglary did not bear any relationship to the availability of nominated burglars. The volume of vehicle-related crime (unlawful taking, theft of and theft from a motor vehicle) did vary according to the number of nominated offenders available. Breaking down to neighbourhood level, only one area displayed a relationship between levels of vehicle crime and the availability of nominated offenders to commit crime. Furthermore, there was some evidence that this group accounted for a component of other crime types, namely burglary and criminal damage. Two areas failed to produce any meaningful relationship between nominated offenders and crime levels. The results have major implications for the mechanism used to nominate prolific offenders and the resources used to target such individuals. It is argued that refinement and local application of the kinds of analysis described here would be of great utility in shaping offender-targeting practices

Assessing reservoir operations risk under climate change

Risk-based planning offers a robust way to identify strategies that permit adaptive water resources management under climate change. This paper presents a flexible methodology for conducting climate change risk assessments involving reservoir operations. Decision makers can apply this methodology to their systems by selecting future periods and risk metrics relevant to their planning questions and by collectively evaluating system impacts relative to an ensemble of climate projection scenarios (weighted or not). This paper shows multiple applications of this methodology in a case study involving California\u27s Central Valley Project and State Water Project systems. Multiple applications were conducted to show how choices made in conducting the risk assessment, choices known as analytical design decisions, can affect assessed risk. Specifically, risk was reanalyzed for every choice combination of two design decisions: (1) whether to assume climate change will influence flood-control constraints on water supply operations (and how), and (2) whether to weight climate change scenarios (and how). Results show that assessed risk would motivate different planning pathways depending on decision-maker attitudes toward risk (e.g., risk neutral versus risk averse). Results also show that assessed risk at a given risk attitude is sensitive to the analytical design choices listed above, with the choice of whether to adjust flood-control rules under climate change having considerably more influence than the choice on whether to weight climate scenarios

Using DNA to catch offenders quicker: serious detections arising from criminal justice samples.

DNA samples on the national database matching those found at scenes of serious violent or sexual crimes were identified. The earlier offence leading the sample to appear on the database was noted. The bulk (60-84% according to inclusion criteria) involved theft, drug or other offending. The result, indicating offender versatility, is consistent with most research on criminal careers. Its importance for operational police lies in identifying the contribution made by DNA samples taken after less serious offences in clearing subsequent serious crime, and the importance of taking such samples as widely as possible. Examining specific relationships between early and later offences revealed a significant link between providing a DNA sample following a drug offence and subsequently committing murder

The Massive Star-forming Regions Omnibus X-ray Catalog

We present the Massive Star-forming Regions (MSFRs) Omnibus X-ray Catalog (MOXC), a compendium of X-ray point sources from {\em Chandra}/ACIS observations of a selection of MSFRs across the Galaxy, plus 30 Doradus in the Large Magellanic Cloud. MOXC consists of 20,623 X-ray point sources from 12 MSFRs with distances ranging from 1.7 kpc to 50 kpc. Additionally, we show the morphology of the unresolved X-ray emission that remains after the catalogued X-ray point sources are excised from the ACIS data, in the context of \Spitzer\ and {\em WISE} observations that trace the bubbles, ionization fronts, and photon-dominated regions that characterize MSFRs. In previous work, we have found that this unresolved X-ray emission is dominated by hot plasma from massive star wind shocks. This diffuse X-ray emission is found in every MOXC MSFR, clearly demonstrating that massive star feedback (and the several-million-degree plasmas that it generates) is an integral component of MSFR physics.Comment: Accepted to ApJS, March 3, 2014. 51 pages, 25 figure