Search results for "Diversification"
showing 10 items of 181 documents
Portfolio diversification in the sovereign credit swap markets
2018
We develop models for portfolio diversification in the sovereign credit default swaps (CDS) markets and show that, despite literature findings that sovereign CDS spreads are affected by global factors, there is sufficient idiosyncratic risk to be diversified. However, we identify regime switching in the times series of CDS spreads and spread returns, and the optimal diversified strategies can be regime dependent. The developed models trade off the CVaR risk measure against expected return, consistently with the statistical properties of spreads. We consider three investment strategies suited for different CDS market participants: for investors with long positions, speculators that hold unco…
Determinants of complementary feeding practices in infants from the ELFE study : familial health, socio-economic and demographic characteristics and …
2018
Infant feeding practices could be risk factors for cardiovascular diseases, via early nutritional programming. These practices have not been described in detail in France until now and knowing their determinants could help improve nutritional prevention interventions.For more than 11 000 children followed in the ELFE cohort (French Longitudinal Study since childhood), we calculated the age at introduction of complementary feeding (CFg) and of food groups, evaluated the uses of added sugar, salt and fat from 3 to 10 months old, and defined three principal components of early feeding. Their associations with familial characteristics were evaluated, taking in account the influence of the infan…
Diffusion des systèmes informatiques au sein des organisations et diversification des utilisateurs.
1986
International audience
Influence des pratiques d’allaitement et de diversification sur l’acceptation de flaveurs nouvelles chez le jeune enfant : variabilité intra- et inte…
2007
This thesis covers three separate but related studies. The first, a questionnaire survey of infant feeding practices in two nearby European regions (Dijon, France and Aalen, Germany) reports between- and withinregion differences in breastfeeding duration and variety of vegetables offered early in weaning. This survey identified the level and rate of vegetable variety and the specific foods to use in a second study. The 2nd study examined the effects of breast- or formula-feeding and different levels of vegetable variety (no, low or high) early in weaning on acceptance (intake and liking) of new foods. The foods were: (1) a first new vegetable offered immediately after the intervention; (2) …
Faunal invasions as a source of morphological constraints and innovations? The diversification of the early Cardioceratidae (Ammonoidea; Middle Juras…
2005
Abstract Multivariate analysis of shell characters and quantification of morphological diversity (morphospace occupation and disparity) are used here to investigate the modes of morphological diversification of ammonites. We define five events in early cardioceratid history that connect geographical changes causing emigration or immigration phases with biodiversity dynamics: (1) the initial colonization of the Arctic Basin by the Cardioceratidae at the end of the Bajocian, Middle Jurassic; (2) the first appearance of the Kosmoceratidae clade in the Boreal Realm during the Bathonian; (3) the ensuing expansion phase of this clade in the Boreal Realm; (4) the first phase of migration of the Ca…
Gestión eficiente de carteras: Modelo de Markowitz y el Ibex-35
2019
El objetivo de este trabajo es construir con el máximo detalle posible una frontera eficiente de acuerdo al modelo de Harry Markowitz, conocer con profundidad el modelo y comparar sus resultados con diversos índices bursátiles para analizar el efecto que tiene una diversificación eficiente sobre el rendimiento y el riesgo de una cartera. Para ello nos basaremos en datos históricos del IBEX-35 a los que aplicaremos el modelo con ayuda de distintos programas informáticos de optimización. Veremos cómo realmente sí que es posible crear carteras con menor volatilidad que los títulos que forman el mercado, como es posible que títulos con rendimientos esperados negativos formen parte de carteras e…
Education and Employment: A Survey of French Research
1981
There is little doubt that at the end of the 1 960s, French research into the education-income relationship as a means of analysing also the relationship between training and employment remained unadvanced by comparison with work of this kind undertaken in English-speaking countries. Mainly attributable to a lack of appropriate data, this weakness incited the public authorities to develop, at the beginning of the 1970s, the gathering of such information, first on the cost of education, and then on wage levels. Thenceforth, the education-income relationship was subject to close analysis, while studies were carried out to elucidate the influence of variables other than education itself. Indee…
University Rankings: The Many Sides of the Debate
2014
Abstract Within the context of bourgeoning institutions that rank higher education institutions, this paper examines the merits and demerits of university rankings and diverse ranking methodologies. It explores and presents recent developments and diversification of international rankings and highlights their general trend towards more broadly balanced and multidimensional criteria. The paper concludes that like any other complex endeavour, rankings have their pros and cons but the latter does not justify their abandonment. What is required is public education that builds a discerning user who can optimally gain from the use of rankings while avoiding their pitfalls. The original version of…
Rethinking the Finance of Post-Compulsory Education
2010
Throughout the world, the finance of education is in serious crisis. The crisis of educational finance is not limited to the problem of meeting the obligations of societies to provide some minimum amount of compulsory education for their students. This minimum does not assure the preparation of an appropriately trained labour force in a world that is increasingly technicological and in which a competitive economy requires the remplacement of traditional production processes with others based on sophisticated labour and capital. The rapid growth of post-compulsory systems of education is no longer a luxury, but a necessity for industrialization and economic development.
Diversification of old-age care services for older people: Trade-offs between coverage, diversification and targeting in European countries.
2011
Information on public services for older people is often limited to institutional care and Home Help/ Home Care, be it for individuals in surveys, statistics for a specific country or for international comparisons. Yet, these two major services in many countries are supplemented — or substituted — by other, minor services. The latter include services such as transportation services, meals-on-wheels, alarm systems, and day care. In this study the authors use various data sources to provide information on all or most of these types of support for Denmark, Norway, Sweden, Germany, England, Spain, and Israel, concluding with a closer scrutiny of Swedish service profiles. When all types of suppo…