130 research outputs found
Old Globular Clusters Masquerading as Young in NGC 4365?
High signal-to-noise, low-resolution spectra have been obtained for 22
globular clusters (GCs) in NGC 4365. Some of these were selected as probable
representatives of an intermediate-age (2-5 Gyr), extremely metal-rich GC
subpopulation. The presence of such a subpopulation had been inferred from the
unusual optical and near-IR color distributions of GCs in this otherwise
typical Virgo elliptical galaxy. However, ages derived from Lick indices are
consistent with uniformly old mean ages for all GCs in our sample. The
metallicities of the clusters show some evidence for a trimodal distribution.
The most metal-poor and metal-rich peaks are consistent with the values
expected for an elliptical galaxy of this luminosity, but there appears to be
an additional, intermediate-metallicity peak lying between them. New Hubble
Space Telescope photometry is consistent with this result. A plausible scenario
is that in earlier data these three peaks merged into a single broad
distribution. Our results suggest that it is difficult to identify
intermediate-age GC subpopulations solely with photometry, even when both
optical and near-infrared colors are used.Comment: 30 pages, including 11 figures. AJ in pres
QuantiFERON-TB performs better in children, including infants, than in adults with active tuberculosis: A multicenter study
Immunological tests, including the QuantiFERON-TB Gold In-Tube (QFT-IT) assay, represent an important aid for diagnosing active tuberculosis (TB) and latent TB infections in children, but concerns about their use in children <5 years of age persist. This is a multicenter retrospective study comparing a population of 226 children to 521 adults with pulmonary or extrapulmonary TB. The aim was to evaluate the QFT-IT performance, analyzing both qualitative and quantitative results, according to age, birthplace, and disease localization. Compared to culture, QFT-IT sensitivity was 93.9%, 100%, and 94.4% in children <= 2, 2 to 5, and 5 to 16 years of age, respectively, and was significantly higher than that in adults (81.0%) (P < 0.0001). The rate of indeterminate test results for children (2.2%) was significantly lower than that for adults (5.2%) (P < 0.0001). In children, QFT-IT sensitivity was not affected by disease localization or birthplace (Italy born versus foreign born). Interferon gamma (IFN-gamma) values in response to TB antigen and mitogen were significantly higher in children than in adults (TB antigen, median of 10 versus 1.66 IU IFN-gamma/ml; mitogen, median of 10 versus 6.70 IU IFN-gamma/ml; P < 0.0001). In summary, this study supports the use of QFT-IT as a complementary test for the diagnosis of pediatric TB even under 2 years of age. Our observations could be applicable to the new version of the test, QuantiFERON-TB Gold Plus, which has recently been shown to have similar sensitivity in active TB, although data in children are still lacking
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Trilingual education in China: perspectives from a university programme for minority students
Attention to trilingual education programmes in China has tended to focus on basic education; there had been little attention to date on the higher education sector. The present paper will attempt to bridge this gap by exploring a Yi-English-Chinese (YEC) trilingual education programme through case studies of three Yi students. We will start by briefly exploring multilingualism and minority participation in higher education in China, contextual issues important for an understanding of trilingual education. We will then describe the methodology employed to collect data from the students before analysing the life events which steer them to the programme, the ways in which they position themselves in relation to the three languages, and the implications for the delivery of the programme and the learning outcomes of students
Internationalisation in Higher Education as a catalyst to STEAM
Internationalisation efforts in Higher Education are usually led by the institutions' International Offices in partnership with the academic units at various levels, thus providing an ideal opportunity to promote collaboration across colleges, schools and departments, and to bring staff with a broad range of experience and expertise to work together. This chapter discusses two ways in which Higher Education institutions can take advantage of these internationalisation efforts to cultivate and nurture STEAM. First, considering internationalisation of the curriculum (IoC) across disciplines, which entails the incorporation of 'an intercultural dimension into the content of the curriculum as well as the teaching and learning processes and support services of a programme of study' (Leask 2015). Inasmuch as IoC seeks to develop students' international and intercultural perspectives as global professionals and citizens, it requires engagement with the arts, humanities, social sciences and sustainability initiatives across programmes, providing an opportunity to embed STEAM in the curriculum. Further, I argue that there is a parallelism between the national cultures that IoC seeks to draw from and the disciplines themselves, which are also different cultures, 'separate communities of practice with their own organisations, power hierarchies, questions to answer and [sometimes heavily policed] entry boundaries' (Brown and Harris 2014, 115). An interdisciplinary approach, and in particular one that promotes STEAM, should enrich the curriculum and increase its relevance in the same way that an international approach would. And second, through matching an employability and transferable skills training programme across disciplines to the 'internationalisation at home' initiatives that seek to deploy international students and staff as resources in Higher Education institutions (Altbach and Yudkevich 2017). Such a programme would focus on bringing skills traditionally associated with the arts and humanities - such as aesthetic appreciation, critical thinking or communication skills - to students of technology and science, while also bringing skills traditionally associated with science and technology - such as planning and problem solving, numeracy and the use of information technology - to students of arts and humanities, actively taking advantage of the innovative perspectives that international staff and students bring. In sum, the chapter argues that the internationalisation agenda in Higher Education partly inherently overlaps with that of STEAM cultivation, and highlights two practical ways in which curricula can be modified to promote the latter while advancing the former for a more inclusive student experience, enhancing employability skills and promoting the interdisciplinary outlook to the most pressing wicked problems that societies so badly need today
The Professional Doctorate
In the light of significant national and international policy change impacting institutions of higher education and higher education’s role in the emerging world economy (Friedman, 2005), it is unsurprising that new interest in the doctoral education field has prompted changing conceptualisations of what doctoral work is. At the level of programme development and provision, universities are increasing the range of practices and number of doctorates on offer
The Prohibition of the Proposed Springer-Prosiebensat.1-Merger: How Much Economics in German Merger Control?
We review the Bundeskartellamt (Federal Cartel Office Germany) decision on the proposed merger between Springer and ProSiebenSat.1 from an economic point of view. In doing so, it is not our goal to analyse whether the controversial decision by the Bundeskar-tellamt has been correct or flawed from a legal point of view. Instead, we analyse whether the economic reasoning in the decision document reflects state-of-the-art economic theory on conglomerate mergers. Regarding such types of mergers, anticompetitive effects either do not occur regularly or are more often than not overcompensated by efficiency gains, so that a standard welfare perspective demands reluctance concerning antitrust interventions. This is particularly true if two-sided markets, like media markets, are involved. However, anticompe-titive conglomerate mergers are not impossible, in particular in neighbouring markets where there is some relationship between the products of the merging companies. In line with the more-economic approach in European merger control, a particular thorough line of argumen-tation, backed with particularly convincing economic evidence, is necessary to justify a pro-hibition of a conglomerate merger from an economic point of view. Against this background, we do not find the reasoning of the Bundeskartellamt entirely convincing and sufficiently strong to justify a prohibition of the proposed combination from an economic perspective. The reasons are that (i) the Bundeskartellamt fails to continuously consider consumer and customer welfare as the relevant standards, (ii) positive efficiency and welfare effects of cross-media strategies are neglected, (iii) in contrast, the competition agency sometimes ap-pears to view profitability of post-merger strategy options to be per se anticompetitive (effi-ciency offence), (iv) the incontestability of the relevant markets is not sufficiently substanti-ated, (v) inconsistencies occur regarding the symmetry of the TV advertising market duopoly versus the unique role of the BILD-Zeitung and (vi) the employment of modern economic instruments appears to be underdeveloped. Thus, we conclude that the Bundeskartellamt has not embraced the European more-economic approach in the analysed decision. However, one can discuss whether economic effects are overcompensated in this case by concerns about a reduction in diversity of opinion and threats to free speech. Similar to the Bundeskartellamt, we do not consider these concerns in our analysis
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