Doing What we Know we Should: Engaged scholarship and community development

In Australia, engaged scholarship oriented towards community development objectives has yet to be recognised in funding regimes as being inherently beneficial in terms of scholarly excellence and university rankings. While the civic role of universities is acknowledged by individual universities, higher education management and at the Federal policy level, they are most often framed as funding problems related to ‘community service’ rather than as research opportunities which can raise the university’s profile by providing the basis for excellent research outputs and community enrichment. Community engagement has become a familiar term in the Australian higher education lexicon in recent years but there is still little institutional infrastructure that directly embodies the principles and sentiment of community engagement evident in current Australian universities. In this paper, the inaugural Director and Research Manager of the University of Queensland’s Community Service and Research Centre reflect on their five years leading a Centre that was/has been privileged to enjoy significant institutional support and the lessons learnt in forging into unknown territories. The reflections focus on the Centre’s seminal project, the Goodna Service Integration Project

From Dreams to Reality: The Evolution of Anglo-Canadian Trade During the Diefenbaker Era

The articulated foreign economic policy of the Conservative government of John Diefenbaker following its election in June 1957 was to redirect trade away from the United States and toward the United Kingdom. This policy reflected Diefenbaker's almost religious attachment to the Commonwealth and to Britain, as well as his abiding suspicion of continentalism. However, from these brave beginnings, Conservative trade policy ended up pretty much where the Liberals had been before their 1957 defeat-increasingly reliant on the US market for Canada's domestic prosperity. This was a result partly of the normal development of trade between the two North American countries, but it also reflected Diefenbaker's growing realisation of the market differences between Canada and the United Kingdom, and the impossibility of enhancing the flow of Canadian exports to Britain.Après l'élection de juin 1957, la politique très claire du gouvernement conservateur de John Diefenbaker concernant le commerce international visait à diminuer les échanges commerciaux avec les États-Unis et à intensifier ceux avec la Grande-Bretagne. Cette politique révélait l'attachement quasi religieux de Diefenbaker envers le Commonwealth et la Grande-Bretagne, ainsi que sa méfiance envers le continentalisme. Malgré des débuts louables, la politique conservatrice eut tôt fait d'aboutir à la situation où les libéraux étaient arrivés avant leur défaite de 1957 : la prospérité des marchés canadiens dépendait de plus en plus des marchés américains. Cet état de fait était en partie la conséquence du développement normal du commerce entre les deux pays nord-américains, mais elle trahissait aussi la prise de conscience de Diefenbaker à l'égard des différences entre les marchés canadien et britannique, et de l'impossibilité d'intensifier les exportations canadiennes vers la Grande-Bretagne

Foundation Paper: The Australian Consortium on Higher Education, Community Engagement and Social Responsibility

The purpose of this paper is to begin a discussion regarding some core conceptual and theoretical tools that will inform the research agenda of the Australian Consortium on Higher Education, Community Engagement, and Social Responsibility (henceforth 'The Australian Consortium'). Although we have taken particular approaches and articulated particular assumptions regarding community engagement, this is not intended to limit discussion to one particular way of describing or practising community engagement. During this phase of the project we are interested in developing an intertextual spectrum of ideas and representations of community engagement which draws on a range of voices from a range of university, government, and community contexts. We propose that these discussions will then become a resource both for this project and in general via the Australian Consortium website and emerging Consortium publications in academic and non academic media. This paper is in five parts. The first provides an overview of the concept of community engagement based on current activities in universities and other large organisations. The second provides an overview of current organisational and policy contexts for university community engagement activities. The third begins a conceptual-theoretical mapping of community engagement in universities including, and in particular, an exploration of the university as being situated within a community of 'concentric circles', including local, state, national, and international communities; the "networked" university; higher education as social practice; and sustainability and social responsibility in engagement. The fourth section outlines a number of political challenges facing those who seek to practice community engagement, including the potential for community engagement practices to privilege certain voices over others. The fifth section invites detailed feedback on the ideas presented in this paper, including a call for contributions in the form of Australian Consortium discussion papers

Shallow Ultraviolet Transits of WD 1145+017

WD 1145+017 is a unique white dwarf system that has a heavily polluted atmosphere, an infrared excess from a dust disk, numerous broad absorption lines from circumstellar gas, and changing transit features, likely from fragments of an actively disintegrating asteroid. Here, we present results from a large photometric and spectroscopic campaign with Hubble, Keck , VLT, Spitzer, and many other smaller telescopes from 2015 to 2018. Somewhat surprisingly, but consistent with previous observations in the u' band, the UV transit depths are always shallower than those in the optical. We develop a model that can quantitatively explain the observed "bluing" and the main findings are: I. the transiting objects, circumstellar gas, and white dwarf are all aligned along our line of sight; II. the transiting object is blocking a larger fraction of the circumstellar gas than of the white dwarf itself. Because most circumstellar lines are concentrated in the UV, the UV flux appears to be less blocked compared to the optical during a transit, leading to a shallower UV transit. This scenario is further supported by the strong anti-correlation between optical transit depth and circumstellar line strength. We have yet to detect any wavelength-dependent transits caused by the transiting material around WD 1145+017.Comment: 16 pages, 11 figures, 6 tables, ApJ, in pres

White Paper: Measuring Research Outputs Through Bibliometrics

The suggested citation for this white paper is: University of Waterloo Working Group on Bibliometrics, Winter 2016. White Paper: Measuring Research Outputs through Bibliometrics, Waterloo, Ontario: University of Waterloo.This White Paper provides a high-level review of issues relevant to understanding bibliometrics, and practical recommendations for how to appropriately use these measures. This is not a policy paper; instead, it defines and summarizes evidence that addresses appropriate use of bibliometric analysis at the University of Waterloo. Issues identified and recommendations will generally apply to other academic institutions. Understanding the types of bibliometric measures and their limitations makes it possible to identify both appropriate uses and crucial limitations of bibliometric analysis. Recommendations offered at the end of this paper provide a range of opportunities for how researchers and administrators at Waterloo and beyond can integrate bibliometric analysis into their practice

Planetary Candidates Observed by Kepler, III: Analysis of the First 16 Months of Data

New transiting planet candidates are identified in sixteen months (May 2009 - September 2010) of data from the Kepler spacecraft. Nearly five thousand periodic transit-like signals are vetted against astrophysical and instrumental false positives yielding 1,091 viable new planet candidates, bringing the total count up to over 2,300. Improved vetting metrics are employed, contributing to higher catalog reliability. Most notable is the noise-weighted robust averaging of multi-quarter photo-center offsets derived from difference image analysis which identifies likely background eclipsing binaries. Twenty-two months of photometry are used for the purpose of characterizing each of the new candidates. Ephemerides (transit epoch, T_0, and orbital period, P) are tabulated as well as the products of light curve modeling: reduced radius (Rp/R*), reduced semi-major axis (d/R*), and impact parameter (b). The largest fractional increases are seen for the smallest planet candidates (197% for candidates smaller than 2Re compared to 52% for candidates larger than 2Re) and those at longer orbital periods (123% for candidates outside of 50-day orbits versus 85% for candidates inside of 50-day orbits). The gains are larger than expected from increasing the observing window from thirteen months (Quarter 1-- Quarter 5) to sixteen months (Quarter 1 -- Quarter 6). This demonstrates the benefit of continued development of pipeline analysis software. The fraction of all host stars with multiple candidates has grown from 17% to 20%, and the paucity of short-period giant planets in multiple systems is still evident. The progression toward smaller planets at longer orbital periods with each new catalog release suggests that Earth-size planets in the Habitable Zone are forthcoming if, indeed, such planets are abundant.Comment: Submitted to ApJS. Machine-readable tables are available at http://kepler.nasa.gov, http://archive.stsci.edu/kepler/results.html, and the NASA Exoplanet Archiv

Very Low-Mass Stellar and Substellar Companions to Solar-Like Stars from MARVELS I: A Low Mass Ratio Stellar Companion to TYC 4110-01037-1 in a 79-day Orbit

TYC 4110-01037-1 has a low-mass stellar companion, whose small mass ratio and short orbital period are atypical amongst solar-like (Teff ~< 6000 K) binary systems. Our analysis of TYC 4110-01037-1 reveals it to be a moderately aged (~<5 Gyr) solar-like star having a mass of 1.07 +/- 0.08 MSun and radius of 0.99 +/- 0.18 RSun. We analyze 32 radial velocity measurements from the SDSS-III MARVELS survey as well as 6 supporting radial velocity measurements from the SARG spectrograph on the 3.6m TNG telescope obtained over a period of ~2 years. The best Keplerian orbital fit parameters were found to have a period of 78.994 +/- 0.012 days, an eccentricity of 0.1095 +/- 0.0023, and a semi-amplitude of 4199 +/- 11 m/s. We determine the minimum companion mass (if sin i = 1) to be 97.7 +/- 5.8 MJup. The system's companion to host star mass ratio, >0.087 +/- 0.003, places it at the lowest end of observed values for short period stellar companions to solar-like (Teff ~< 6000 K) stars. One possible way to create such a system would be if a triple-component stellar multiple broke up into a short period, low q binary during the cluster dispersal phase of its lifetime. A candidate tertiary body has been identified in the system via single-epoch, high contrast imagery. If this object is confirmed to be co-moving, we estimate it would be a dM4 star. We present these results in the context of our larger-scale effort to constrain the statistics of low mass stellar and brown dwarf companions to FGK-type stars via the MARVELS survey.Comment: 22 pages; accepted in A

Age-structured gametocyte allocation links immunity to epidemiology in malaria parasites

Background Despite a long history of attempts to model malaria epidemiology, the over-riding conclusion is that a detailed understanding of host-parasite interactions leading to immunity is required. It is still not known what governs the duration of an infection and how within-human parasite dynamics relate to malaria epidemiology. Presentation of the hypothesis Immunity to Plasmodium falciparum develops slowly and requires repeated exposure to the parasite, which thus generates age-structure in the host-parasite interaction. An age-structured degree of immunity would present the parasite with humans of highly variable quality. Evolutionary theory suggests that natural selection will mould adaptive phenotypes that are more precise (less variant) in "high quality" habitats, where lifetime reproductive success is best. Variability in malaria parasite gametocyte density is predicted to be less variable in those age groups who best infect mosquitoes. Thus, the extent to which variation in gametocyte density is a simple parasite phenotype reflecting the complex within-host parasite dynamics is addressed. Testing the hypothesis Gametocyte densities and corresponding infectiousness to mosquitoes from published data sets and studies in both rural and urban Cameroon are analysed. The mean and variation in gametocyte density according to age group are considered and compared with transmission success (proportion of mosquitoes infected). Across a wide range of settings endemic for malaria, the age group that infected most mosquitoes had the least variation in gametocyte density, i.e. there was a significant relationship between the variance rather than the mean gametocyte density and age-specific parasite transmission success. In these settings, the acquisition of immunity over time was evident as a decrease in asexual parasite densities with age. By contrast, in an urban setting, there were no such age-structured relationships either with variation in gametocyte density or asexual parasite density. Implications of the hypothesis Gametocyte production is seemingly predicted by evolutionary theory, insofar as a reproductive phenotype (gametocyte density) is most precisely expressed (i.e. is most invariant) in the most infectious human age group. This human age group would thus be expected to be the habitat most suitable for the parasite. Comprehension of the immuno-epidemiology of malaria, a requisite for any vaccine strategies, remains poor. Immunological characterization of the human population stratified by parasite gametocyte allocation would be a step forward in identifying the salient immunological pathways of what makes a human a good habitat

Comparison of PfHRP-2/pLDH ELISA, qPCR and microscopy for the detection of Plasmodium events and prediction of sick visits during a malaria vaccine study.

BACKGROUND: Compared to expert malaria microscopy, malaria biomarkers such as Plasmodium falciparum histidine rich protein-2 (PfHRP-2), and PCR provide superior analytical sensitivity and specificity for quantifying malaria parasites infections. This study reports on parasite prevalence, sick visits parasite density and species composition by different diagnostic methods during a phase-I malaria vaccine trial. METHODS: Blood samples for microscopy, PfHRP-2 and Plasmodium lactate dehydrogenase (pLDH) ELISAs and real time quantitative PCR (qPCR) were collected during scheduled (n = 298) or sick visits (n = 38) from 30 adults participating in a 112-day vaccine trial. The four methods were used to assess parasite prevalence, as well as parasite density over a 42-day period for patients with clinical episodes. RESULTS: During scheduled visits, qPCR (39.9%, N = 119) and PfHRP-2 ELISA (36.9%, N = 110) detected higher parasite prevalence than pLDH ELISA (16.8%, N = 50) and all methods were more sensitive than microscopy (13.4%, N = 40). All microscopically detected infections contained P. falciparum, as mono-infections (95%) or with P. malariae (5%). By qPCR, 102/119 infections were speciated. P. falciparum predominated either as monoinfections (71.6%), with P. malariae (8.8%), P. ovale (4.9%) or both (3.9%). P. malariae (6.9%) and P. ovale (1.0%) also occurred as co-infections (2.9%). As expected, higher prevalences were detected during sick visits, with prevalences of 65.8% (qPCR), 60.5% (PfHRP-2 ELISA), 21.1% (pLDH ELISA) and 31.6% (microscopy). PfHRP-2 showed biomass build-up that climaxed (1813±3410 ng/mL SD) at clinical episodes. CONCLUSION: PfHRP-2 ELISA and qPCR may be needed for accurately quantifying the malaria parasite burden. In addition, qPCR improves parasite speciation, whilst PfHRP-2 ELISA is a potential predictor for clinical disease caused by P. falciparum. TRIAL REGISTRATION: ClinicalTrials.gov NCT00666380