H-alpha Stacked Images Reveal Large Numbers of PNe in the LMC

Our new, deep, high resolution H-alpha and matching R-band UKST multi-exposure stack of the central 25 sq. degrees of the LMC promises to provide an unprecedented homogeneous sample of >1,000 new PNe. Our preliminary 2dF spectroscopy on the AAT has vindicated our selection process and confirmed 136 new PNe and 57 emission-line stars out of a sample of 263 candidate sources within an initial 2.5 sq. deg. area. To date approximately one third of the entire LMC has been scanned for candidates (~7.5 sq.deg.). More than 750 new emission sources have been catalogued so far along with independent re-identification of all known and possible PNe found from other surveys. Once our image analysis is complete, we plan comprehensive spectroscopic follow-up of the whole sample, not only to confirm our PN candidates but also to derive nebula temperatures and densities which, with the aid of photoionization modeling, will yield stellar parameters which are vital for constructing H-R diagrams for these objects. A prime objective of the survey is to produce a Luminosity Function which will be the most accurate and comprehensive ever derived in terms of numbers, magnitude range and evolutionary state; offering significant new insights into the LMC's evolutionary history. The observation and measurement of our newly discovered AGB halos around 60% of these PN will also assist in determining the initial- to final-mass ratios for this phase of stellar evolution.Comment: 6 pages, 3 figures, LaTeX, to be published in Proceedings of the ESO workshop on Planetary Nebulae beyond the Milky Way held at ESO, Garching, May 19-21, 200

A New Population of Planetary Nebulae Discovered in the Large Magellanic Cloud (I): Preliminary Sample

We report our initial discovery of 73 new planetary nebulae (PNe) in the Large Magellanic Cloud (LMC) following confirmatory 2dF spectroscopy on the Anglo-Australian Telescope (AAT). Preliminary candidate sources come from a 10 per cent sub-area of our new deep, high resolution H-alpha map of the central 25 deg. square of the LMC obtained with the UK Schmidt Telescope (UKST). The depth of the high resolution map was extended to Requiv~22 for H-alpha (4.5 x 10-17 ergs cm-2 s-1 Ang-1) by a process of multi-exposure median co-addition of a dozen 2-hour H-alpha exposures. The resulting map is at least 1-magnitude deeper than the best wide-field narrow-band LMC images currently available. This depth, combined with our selection technique, has also led to the discovery of extended AGB halos around many new and previously known LMC PNe for the first time. Once complete, our new survey is expected to triple the LMC PN population and have significant implications for the LMC PN luminosity function, kinematics, abundance gradients chemical evolution and, via study of the AGB halos, the initial to final mass relation for low to intermediate mass stars.Comment: 14 pages, 21 figures (zipped). Accepted for publication in Mmonthly Notices of the Royal Astronomical Societ

Extending the RP survey to the outer LMC

We are extending our search for faint PNe in the LMC to include the outer 56 deg2 area not covered in the original UKST survey of the central 25 deg2 region. Candidate PNe have been selected using the Magellanic Cloud Emission Line Survey (MCELS) and the first round of observations has yielded 93 new LMC PNe while confirming the 102 previously known PNe in the outer LMC. We plan to continue our spectroscopic object identification program until we cover all our remaining candidates in the survey area. These observations, providing medium and high resolution spectra from 3650 Ang to 6900 Ang will additionally be used to measure fluxes for a series of research projects including luminosity functions, abundances and LMC kinematics.Comment: 2 pages, 1 figure, IAU283 poster contributio

A New Population of Planetary Nebulae Discovered in the Large Magellanic Cloud (IV): The Outer LMC

We have extended our PNe survey to the outer ~64deg^2 of the LMC using maps from the Magellanic Cloud Emission Line Survey (MCELS) and the UK Schmidt Telescope (UKST) H-alpha survey. Although the MCELS survey has poorer ~5 arcsecond resolution than both the UKST H-alpha survey and the original H-alpha median stacked map in the LMC's central 25deg^2, it has the advantage of additional narrow-band filters at H-alpha, [OIII] and [SII] providing improved diagnostic capabilities. Using these data to uncover new emission line candidates we have so far spectroscopically confirmed an extra 61 LMC PNe which we present here for the first time. We have also independently recovered and spectroscopically confirmed 107 of the 109 (98%) PNe that were previously known to exist in the outer LMC. The majority of our newly discovered and previously known PNe were confirmed using the AAOmega, multi-object fibre spectroscopy system on the 3.9-m Anglo-Australian Telescope (AAT) and the 6dF multi-object spectrograph on the UKST. These newly identified PNe were cross-checked against extant multi-wavelength imaging surveys in the near and mid-infrared in particular and against the latest emission-line ratio diagnostic plots for improved confidence in PNe identification.Comment: 24 pages, 22 figures, accepted MNRAS main journal stt 160

Community health priorities: Lessons for malaria prevention from Balaka district, Malawi

IntroductionCommunication to address priority health challenges typically draws on epidemiological research in conjunction with referencing global and country strategies. While community-level perspectives on health challenges typically align with national priorities, nuances and barriers that constrain health response may be less well known. To deepen understanding of the relation between situational aspects of health and ways of making meaning, community insights into health priorities were explored.MethodsAction Media, an established participatory research methodology for informing health communication design and strategy, was undertaken with parents of children under 5 in Balaka District, Malawi. ResultsParticipants identified malaria as a priority concern in their community. While it was reported that there was strong commitment to consistent use of long lasting insecticide treated nets, there was frustration that malaria incidence remained high. It was observed that risk of exposure to mosquito bites was increased as a result of chores and other activities that extended into the early evenings prior to retiring to bed under a bed net. Bed bug infestations were said to be a common and ongoing concern. Some community members alleviated discomfort by abandoning their beds and sleeping outside without adequate protection while others boiled their bed nets to remove bed bugs. Accessing distant health facilities when ill with malaria was difficult for adults and children. Participants identified the need for effective strategies to address these concerns including accessing mosquito repellant, eradicating bed bugs, treating malaria locally and collaborating in malaria control activities. ConclusionsMeeting targets for malaria prevention requires consideration of contextual factors that undermine effective malaria prevention in affected communities. Such factors are not immediately apparent through epidemiological data. Regularly assessing contextual challenges in high malaria incidence areas provides opportunities to understand gaps, to refine intervention strategies and to inform communication programming

A Study of the Projected Population of the Pikeville Independent Schools (1976-1985), and Its Relationship to School Facilities

An applied project submitted in partial fulfillment of the requirements for the degree of Education Specialist at Morehead State University by Warren Parker Tiller on May 11, 197

Animal Damage Control and the Endangered Species Act

The premise of the Endangered Species Act is that all wildlife are valuable natural resources and the extinction of species in the name of progress must be halted. To achieve this end, Congress requires all Federal agencies to consult with the Fish and Wildlife Service when any of their programs or projects affect a listed endangered or threatened species. Problems of special interest to this conference are those that project an endangered or threatened species in direct conflict with man

The presentation of the self and professional identity: countering the accountant’s stereotype

Purpose: As its central objective, this study explores the intersection of professional values and career roles in accountants’ presentations of their professional identity, in the face of enduring stereotyping of the accounting role. Design/methodology/approach: This study presents a qualitative investigation of accountants’ construction of their professional identities and imagery using a Goffmanian dramaturgical perspective. Viewing professional identity construction as a presentational matter of impression management, the investigation employs a reflexive photo-interviewing methodology. Findings: Accountants use a variety of workplace dramatization, idealization and mystification strategies inside and outside the workplace to counter the traditional accounting stereotype. They also attempt to develop a professional identity that is a subset of their overall life values. Research limitations/implications: Their professional orientation is found to embrace role reconstruction and revised image mystification while not necessarily aiming for upward professional mobility. This has implications for understanding the career trajectories of contemporary accountants with associated implications for continuing professional development and education. Originality/value: The paper focuses on professional role, identity, values and image at the individual accountant level, while most prior research has focussed upon these issues at the macro association-wide level. In offering the first use of reflexive photo-interviewing method in the accounting research literature, it brings the prospect of having elicited different and possibly more reflective observations, reflections and understandings from actors not otherwise possible from more conventional methods