1,524 research outputs found
Rhamdella lemai Bertoletti 1967
No full textRhamdella lemai Bertoletti (1967) Holotype: MRCN 1897, 155 mm SL, lago Guaíba at Ponta Grossa, Porto Alegre, Rio Grande do Sul, Brazil, 19 January 1966, J.J. Bertoletti (Fig. 14). Paratypes: 2 lots, 2 specimens; MRCN 1866, 1, 132 mm SL, rio Jacuí, Rio Pardo, Rio Grande do Sul, Brazil, 28 July 1965, A.A. Lise. MRCN 1896, 1, 131 mm SL, collected with holotype. Remarks. Synonym of Rhamdella eriarcha (Eigenmann & Eigenmann, 1888) (Malabarba, 1989:143).Published as part of Bertaco, Vinicius A. & Azevedo, Marco A., 2018, Type catalog from the fish collection of the Museu de Ciências Naturais, Fundação Zoobotânica do Rio Grande do Sul, Brazil, pp. 83-100 in Zootaxa 4392 (1) on page 91, DOI: 10.11646/zootaxa.4392.1.4, http://zenodo.org/record/119511
Higher education and economic growth: A longitudinal study of European regions 2000–2017
No full textThis paper investigates the impact of regional higher education systems (HESs) on economic growth, based upon 284 European regions (NUTS 2) over an 18-year period (from 2000 to 2017). The empirical framework specifically models the heterogeneity of the HESs by including indicators on university concentration, on the size of the HES and on HES performance and other important factors. The analysis is based on a novel and integrated dataset, created by collecting and combining indicators from different data sources (Eurostat, OECD, WHED and InCites). The results reveal that an increase in number of universities in a region is conducive to stronger economic growth within that region. The quality of research and a specialisation in STEM subjects are the primary drivers through which universities impact positively on the regions’ economic development
Higher education systems and regional economic development in Europe: A combined approach using econometric and machine learning methods
No full textThis study deals with the analysis of regional economic development in Europe. Specifically, it examines the extent to which the performance and characteristics of higher education systems (HESs) influence regional economic development. The analysis employs data at the regional level, examining 649 NUTS-3 in 29 European countries, from 2014 to 2016. The empirical analysis, based on an original dataset that we developed, employs a novel methodological strategy that combines a traditional econometric approach with random forest. The findings detect the existence of nonlinear relationships between regional GDP per capita and HES indicators, which could have been overlooked by previous studies in the literature. Furthermore, the empirical results demonstrate the importance of comprehensively modelling the diversity of HESs, since distinct characteristics and performance can contribute differently to the economy of the regions. In particular, the most important factors for regional economic development are the size of HESs, the internationalisation of the students and research productivity. Finally, this paper provides useful insights for policymakers by suggesting new instruments for driving and fostering the economic development of their regions
Innate and adaptive immune responses in chronic hepatitis B virus infections:Towards restoration of immune control of viral infection
No full textKnowledge of the immunological events necessary to control hepatitis B virus (HBV) infection has accelerated in recent years, but their translation towards therapeutic strategies able to achieve a durable HBV suppression has been challenging. The scenario of how HBV deals with the host immunity is presented and used to discuss how the immune response can be harnessed to potentially achieve infection control
Modulation of the CD8+-T-cell response by CD4+ CD25+ regulatory T cells in patients with Hepatitis B virus infection
No full textCD4+ CD25+ regulatory T cells have been shown to maintain peripheral tolerance against self and foreign
antigens. In this study we analyzed the effect of circulating CD4+ CD25+ T cells on CD8+-T-cell responses of
patients with chronic and resolved hepatitis B virus (HBV) infection. We demonstrated that circulating CD4+
CD25+ T cells modulate the function and expansion of HBV-specific CD8+ cells ex vivo in all patients,
regardless of whether they have chronic or resolved HBV infection. The possible role of CD4+ CD25+ T cells
in the pathogenesis of chronic HBV infection is not supported by these data. However, these results might have
implications for optimizing future immunotherapeutic approaches to HBV treatment
On Endogenous Efficiency in Public and Private Firms
No full textThis paper reconsiders a model proposed by De Fraja (1993) to compare public and private production under complete and incomplete information. It is argued, in contrast to previous results, that such a model provides no convincing grounds to sustain the productive superiority of public ownership. It is also suggested that meaningful comparisons of efficiency require settings where differences in ownership imply different implementation constraints
A note on the Exclusion Principle
No full textThe Exclusion Principle (Baye et alii, 1993) asserts that, in an all-pay auction with fully informed participants, it might be profitable for the seller to exclude those bidders whose valuations are the largest. Menicucci (2006) shows that banning (ex-ante symmetric) bidders can raise expected revenue also in a setting in which the seller regards valuations as identically and independently distributed. We prove that the latter occurrence cannot arise if valuations are distributed according to a monotonic hazard rate
- …
