Another mango season

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First Canadian Record of \u3ci\u3eHexacola Neoscatellae\u3c/i\u3e (Hymenoptera: Figitidae: Eucoilinae), A Parasitoid of the Shore Fly, \u3ci\u3eScatella Stagnalis\u3c/i\u3e

This paper documents the first occurrence of Hexacola neoscatellae, a shore fly parasitoid, in Canada. The discovery of H. neoscatellae is significant because currently there are no suitable biological control agents available for shore fly control to the floriculture industry

Seasonal variability in methane and nitrous oxide fluxes from tropical peatlands in the western Amazon basin

Peer reviewedPublisher PD

A unifying explanation of complex frequency spectra of gamma Dor, SPB and Be stars: combination frequencies and highly non-sinusoidal light curves

There are many Slowly Pulsating B (SPB) stars and γ Dor stars in the Kepler mission data set. The light curves of these pulsating stars have been classified phenomenologically into stars with symmetric light curves and with asymmetric light curves. In the same effective temperature ranges as the γ Dor and SPB stars, there are variable stars with downward light curves that have been conjectured to be caused by spots. Among these phenomenological classes of stars, some show ‘frequency groups’ in their amplitude spectra that have not previously been understood. While it has been recognized that non-linear pulsation gives rise to combination frequencies in a Fourier description of the light curves of these stars, such combination frequencies have been considered to be a only a minor constituent of the amplitude spectra. In this paper, we unify the Fourier description of the light curves of these groups of stars, showing that many of them can be understood in terms of only a few base frequencies, which we attribute to g-mode pulsations, and combination frequencies, where sometimes a very large number of combination frequencies dominate the amplitude spectra. The frequency groups seen in these stars are thus tremendously simplified. We show observationally that the combination frequencies can have amplitudes greater than the base frequency amplitudes, and we show theoretically how this arises. Thus for some γ Dor and SPB stars, combination frequencies can have the highest observed amplitudes. Among the B stars are pulsating Be stars that show emission lines in their spectra from occasional ejection of material into a circumstellar disc. Our analysis gives strong support to the understanding of these pulsating Be stars as rapidly rotating SPB stars, explained entirely by g-mode pulsations

Asteroseismic measurement of surface-to-core rotation in a main-sequence star

We have discovered rotationally split core g-mode triplets and surface p-mode triplets and quintuplets in a terminal age main-sequence A star, KIC 11145123, that shows both δ Sct p-mode pulsations and γ Dor g-mode pulsations. This gives the first robust determination of the rotation of the deep core and surface of a main-sequence star, essentially model-independently. We find its rotation to be nearly uniform with a period near 100 d, but we show with high confidence that the surface rotates slightly faster than the core. A strong angular momentum transfer mechanism must be operating to produce the nearly rigid rotation, and a mechanism other than viscosity must be operating to produce a more rapidly rotating surface than core. Our asteroseismic result, along with previous asteroseismic constraints on internal rotation in some B stars, and measurements of internal rotation in some subgiant, giant and white dwarf stars, has made angular momentum transport in stars throughout their lifetimes an observational science

The Berardenga Antependium and the Passio Ymaginis Office

Table S1. Signatures summary. A summary of 33 signatures about the platforms derived from, the subtypes used for, the gene number included, and the function terms involved. Table S8. The number of function terms in each signature. (PDF 82 kb

Report on the Assessment and Accreditation of Learners using OER

This report shares the findings and lessons learned from an investigation into the economics of disaggregated models for assessing and accrediting informal learners, with particular attention to the OER University (OERu) consortium. It also relies on data from a small-scale survey conducted by two of the authors on perceptions, practices and policies relating to openness in assessment and accreditation in post-secondary institutions (Murphy & Witthaus, 2012). These investigations include the perceptions of stakeholders in post-secondary education towards the OERu concept, combined with a look at economic models for universities to consider in implementing OER assessment and accreditation policies.This report was prepared under the UNESCO/COL Chair in OER programme, with funding from the Social Sciences and Humanities Research Council (SSHRC) of Canada, the Commonwealth of Learning and the Technology Enhanced Knowledge Research Institute (TEKRI) of Athabasca University

Report on the assessment and accreditation of learners using open education resources (OER)

This report shares the findings and lessons learned from an investigation into the economics of disaggregated models for assessing and accrediting informal learners, with particular attention to the OER University (OERu) consortium. It also relies on data from a small-scale survey conducted by two of the authors on perceptions, practices and policies relating to openness in assessment and accreditation in post-secondary institutions (Murphy & Witthaus, 2012). These investigations include the perceptions of stakeholders in post-secondary education towards the OERu concept, combined with a look at economic models for universities to consider in implementing OER assessment and accreditation policies. The OERu is a global consortium of post-secondary institutions collaborating around the assessment and accreditation of learners studying online and using OER. Taylor (2007) described the aim of the OERu as providing free education to learners worldwide using OER as learning materials, with pathways provided to enable them to gain credible qualifications from government recognised or accredited educational institutions. The OERu concept is based on the notion of community service and outreach, and institutions that are members of the OERu network are committed to developing a 'parallel learning universe' to augment and add value to traditional delivery systems in post-secondary education. The ultimate vision of the OERu is to provide free learning opportunities on a massive scale for learners who lack the financial means to access traditional higher education. The OERu currently consists of a collaborative partnership among 26 partner institutions. The network includes nationally accredited universities, colleges and polytechnics and publicly-funded organizations (Mackintosh, Taylor & McGreal, 2011). The current geographic spread of institutions includes Australia, New Zealand, Canada, the USA, England, Ireland, Spain, South Africa, India and the South Pacific. The initiative is coordinated by the OER Foundation, which is an independent, not-for-profit organization that works internationally to support the mainstream adoption of OER in the formal education sector (Mackintosh 2012)

First Canadian Record of \u3ci\u3eHexacola Neoscatellae\u3c/i\u3e (Hymenoptera: Figitidae: Eucoilinae), A Parasitoid of the Shore Fly, \u3ci\u3eScatella Stagnalis\u3c/i\u3e

This paper documents the first occurrence of Hexacola neoscatellae, a shore fly parasitoid, in Canada. The discovery of H. neoscatellae is significant because currently there are no suitable biological control agents available for shore fly control to the floriculture industry