Search results for "DISTANCE"

Split decomposition A technique to analyze viral evolution

1993

A clustering technique allowing a restricted amount of overlapping and based on an abstract theory of coherent decompositions of finite metrics is used to analyze the evolution of foot-and-mouth disease viruses. The emerging picture is compatible with the existence of viral populations with a quasispecies structure and illustrates various forms of evolution of this virus family. In addition, it allows the correlation of these forms with geographic occurrence.

IPHAS-selected classical Be stars

2016

We present a semi-automatic procedure to obtain fundamental physical parameters and distances of classical Be (CBe) stars, based on the Barbier-Chalonge-Divan (BCD) spectrophotometric system. Our aim is to apply this procedure to a large sample of CBe stars detected by the IPHAS photometric survey, to determine their fundamental physical parameters and to explore their suitability as galactic structure tracers. In this paper we describe the methodology used and the validation of the procedure by comparing our results with those obtained from different independent astrophysical techniques for subsamples of stars in common with other studies. We also present a test case study of the galactic …

Effects of isolation, area and predators on invasion: A field experiment with artificial islands

2007

Abstract The three most important ecological factors affecting the success of island invasions are the area of the island, isolation of the island and occurrence of predators on the island. Traditionally, invasion success has been studied on natural islands, which partly explains the rarity of controlled and replicated experiments. Here we report results from a field experiment investigating the influence of the above three factors in artificial islands. As an experimental system, we used predatory mites and a nematode community occurring naturally in boreal coniferous forests. We found that all three factors had an effect on invasion success, but surprisingly, that there were no interactio…

Rising Educational Attainment and Opportunity Equalization: Evidence from France

2020

Educational policies are widely recognized as the means par excellence to equalize opportunities among children with different social and family backgrounds and to promote intergenerational mobility. In this chapter, we focus on the French case and we apply the opportunity equalization criterion proposed by Andreoli, Havnes, and Lefranc (2019) for evaluating the effect of rising compulsory schooling requirements in secondary education. Our results show that such education expansion has a limited redistributive effect on students’ earnings distribution. Nonetheless, we provide evidence of opportunity equalization among groups of students defined by family background circumstances.

Comprehensive Overview on Multiple Strategies Fighting COVID-19

2020

Lately, myriad of novel viruses have emerged causing epidemics such as SARS, MERS, and SARS-CoV-2, leading to high mortality rates worldwide. Thus, these viruses represented a challenging threat to mankind, especially considering the miniscule data available at our disposal regarding these novel viruses. The entire world established coordinative relations in research projects regarding drug and vaccine development on the external range, whereas on the internal range, all countries declared it an emergency case through imposing different restrictions related to their border control, large gatherings, school attendance, and most social activities. Pandemic combating plans prioritized all sect…

The Post-MOOC era: opportunities for open and distance education

2017

From political controversy to a technical problem? Fifteen years of opioid substitution treatment in Finland

2013

Abstract Background The aim of the article is to analyze changes in opioid substitution treatments (OST) in Finland. OST spread in Finland in the late 1990s and early 2000s (Phase 1). Since then, OST has become an integrated part of Finnish drug policy and is provided in various substance abuse treatment units as well as in municipal health centers (Phase 2). Methods The paper analyses the policy around the implementation of opioid substitution treatment in Finland, focusing on identifying the key factors and the relations between them that have contributed to the implementation of OST in Finland. Results OST has become accepted in Finland during the past ten years as a crucial element of a…

Global trends in higher education: an unexpected convergence between France and India

2013

International audience; We propose to examine an unexpected convergence between the higher education systems of two heterogeneous countries, namely France and India. After a brief comparative survey, we address the issue of the commodification of higher education in order to determine whether the latter evolution has been acknowledged, encouraged or opposed by governments. The modern setting in which higher education institutions operate is partly determined by GATS rules that govern international trade in higher education services, notably through the enhancement of new modes of delivery such as e-learning and distance education. We then extend our reflection to bridge the gap between Fran…

Trade integration in the European Union: Openness,interconnectedness, and distance

2020

Abstract This article presents a set of indicators to measure regional trade integration, focusing on the case of the European Union. We propose measures of openness, connectedness and integration which are tuned to evaluate not only how these components contribute to the advance of international integration, but also to control for the potential threat posed by the proliferation of regional trade agreements to trade globalization. Although this and related questions have been examined from several perspectives, the present article explicitly attempts to quantify how regional trade agreements either intensify or thwart trade globalization. Results show that the process of trade integration …

Institutional distance and international networking

2017

We focus on how small- and medium-sized enterprises (SMEs) adapt to differences in institutional logics (values, beliefs, and rules) in their networking when they enter an institutionally distant market. We address gaps in the literature, relating to the role of institutional logics in SME internationalization, and how institutional distance affects the formation of network ties. We show how the social interaction involved in internationalization is embedded in the institutional logics followed by partnering actors. Specifically, we demonstrate how institutional distance may constrain the networking activities of SMEs and identify practices that may support successful internationalization. …