The Early Interaction of the Planetary Nebula NGC 40 with the Interstellar Medium

We report the detection of an Halpha emission-line structure in the upstream side of the planetary nebula NGC 40, which is predicted by numerical simulations, and which is attributed to Rayleigh-Taylor instability. Such a Rayleigh-Taylor instability is expected to occur at early stages of the interaction process between the interstellar medium (ISM) and a fast moving planetary nebula, as is the case for NGC 40. We resolved the Rayleigh-Taylor instability `tongues', as well as the flatness of the nebula around the `tongues', which results from the deceleration by the ISM.Comment: 7 pages, 2 figures - 1 color, 1 mosaic Submitted to ApJLetter

The Problem of Presentations: An EAP Lecturer’s Approach to Teaching Presentation Skills

Presentations are often incorporated into higher education without any instruction on how to present, or the features by which presentations will be assessed. This lack of instruction risks disadvantaging many students judged by tacit criteria they may not meet, including English as an additional language students, first generation university students, and international and/or cross-disciplinary students coming from educational contexts with different presentation styles and values. This paper presents one lecturer’s efforts to meet the needs of her students to develop presentation skills by focusing a significant portion of an English for Academic Purposes (EAP) course on presentations over four years. The paper outlines the curricular design for this focus, which included multiple presentations in multiple formats and an explicit Teaching and Learning Cycle (Rothery, 1994). Further, it presents some of the concepts and approaches that are used to shape an intersemiotic awareness of presentations, including the grammar of bullet point form, image-language relations, how to talk about complex slides, presentation delivery strategies, and how to scaffold practising in class. Finally, it concludes with some challenges about the formal evaluation of such presentations. It offers both design and activity descriptions for interested teachers to consider incorporating, whether in EAP or in other courses

EXAMINING THE MEASUREMENT INVARIANCE OF THE TRANSITION ASSESSMENT AND GOAL GENERATOR ACROSS PERCENT OF TIME SPENT IN GENERAL EDUCATION

Federal law mandates that educators use transition assessment data when they develop their students with disabilities’ IEP transition plans. Transition assessments typically provide scores for educators to include in transition plans, but educators must develop annual transition goals from those scores on their own. The Transition Assessment and Goal Generator (TAGG) was designed to bridge the gap between transition assessment scores and the development of annual transition goals. The purpose of this study was to test the configuration and structure of the TAGG theoretical model to ensure that the goals generated by the TAGG were valid for students who spent varying portions of their school day in general education. The study also tested the configuration and structure of the TAGG to understand whether the goals it generates were suitable for students at different grade levels, having exposure to different transition education concepts, and in different disability categories. Multigroup confirmatory factor analysis was used to assess for measurement invariance of the TAGG items on the Professional, Family and Student versions of the TAGG. Configural equivalence was found for each version of the TAGG regardless of students’ participation in general education, access to transition education, grade level, and disability category, meaning those variables do not need to be considered when goals are generated by the TAGG. Some metric invariance was observed on the student TAGG for students having had transition education and on the family TAGG for students in the 9th grade and having specific learning disabilities and intellectual disabilities, suggesting that students and families viewed some of the behaviors as less related to success than for other groups of students

Bilirubin Present in Diverse Angiosperms

Background and aims: Bilirubin is an orange-yellow tetrapyrrole produced from the breakdown of heme by mammals and some other vertebrates. Plants, algae, and cyanobacteria synthesize molecules similar to bilirubin, including the protein-bound bilins and phytochromobilin which harvest or sense light. Recently, we discovered bilirubin in the arils of Strelitzia nicolai, the White Bird of Paradise Tree, which was the first example of this molecule in a higher plant. Subsequently, we identified bilirubin in both the arils and flowers of Strelitzia reginae, the Bird of Paradise Flower. In the arils of both species, bilirubin is present as the primary pigment, and thus functions to produce color. Previously, no tetrapyrroles were known to generate display color in plants. We were therefore interested in determining whether bilirubin is broadly distributed in the plant kingdom, and whether it contributes to color in other species

A genome-wide association study of self-rated health

Self-rated health questions have been proven to be a highly reliable and valid measure of overall health as measured by other indicators in many population groups. It also has been shown to be a very good predictor of mortality, chronic or severe diseases, and the need for services, and is positively correlated with clinical assessments. Genetic factors have been estimated to account for 25-64% of the variance in the liability of self-rated health. The aim of the present study was to identify Single Nucleotide Polymorphisms (SNPs) underlying the heritability of self-rated health by conducting a genome-wide association analysis in a large sample of 6,706 Australian individuals aged 18-92. No genome wide significant SNPs associated with self-rated health could be identified, indicating that self-rated health may be influenced by a large number of SNPs with very small effect size. A very large sample will be needed to identify these SNPs

Supporting Advocacy, Deliberation, and Civic Learning in the Classroom

We live, teach and learn in complicated times. As faculty in higher education, we have the opportunity to help uphold the civic purpose of higher education. We are accustomed to helping students navigate academic information, and to equipping them for more standard academic tasks. Through thoughtful course design, we can also help our students become better consumers and evaluators of less traditionally academic information: from critically interpreting what they read and see in the news media, to engaging the arguments of their friends, peers and family members. Further, we can challenge our students to use these evaluative skills to engage in debate and advocacy activities around critical issues of the day

V(RI)sub(c) Photometry of Cepheids in the Magellanic Clouds

We present V(RI)sub data for thirteen Cepheids in the Large Magellanic Cloud ans fifty-five in each wavelength band. The median uncertainty in the photometry iy Moffett, Gieren & Barnes (1998) which contained 1000 measures ($\pm 0.01$ mag) in each wavelength band on 22 variables with periods in the range 8--133 days.Comment: LaTeX file (9 pages), LaTeX table (1 page), 2 figures of 3 panels eacs PASP (July