Search results for "generations"
showing 10 items of 54 documents
Anticipating the higher generations of quarks from rephasing invariance of the mixing matrix
1986
Abstract We show that the number of invariant CP violating parameters X CP jumps from the unique universal one in three generations to nine in the four-generation case, saturating the parameter space for generation numbers higher than three. This can lead to drastically different consequences in CP -violating phenomena. We give the quark mass matrices in the three-generation case and speculate for higher generations. We also give some invariant definitions of “maximal” CP violation.
Partecipazione ed appartenenza nell’ottica di un nuovo pensiero islamico. Associazionismo e partitismo di stampo frerista in Italia
2018
L’obiettivo del presente saggio consiste nell’analizzare le traiettorie partecipative delle seconde generazioni di italo-egiziani con particolare riferimento alla loro partecipazione nel contesto delle primavere arabe. Di particolare interesse sarà la trattazione delle loro appartenenza identitaria e di come questa si traduca, eventualmente, in un percorso politico definito o vago, legato all’Egitto e/o all’Italia, capace di o meno di fornire un apporto a quel nuovo ijtihad cui facevamo prima riferimento. Ci siamo concentrati sulla Fratellanza musulmana e le sue ramificazioni italiane al fine osservare quanto e come queste seconde generazioni possano contribuire al rinnovamento di un pensie…
Migranti, Social media e percorsi di socializzazione di lungo raggio: Ancora sull'uso dei social media
2018
In a previous work related to the use of digital media among migrants, we highlighted the importance of the specific effect that use of digital and social media determines in the construction of the "story" of the migratory experience, both for those who are the actors and for the listener, welcoming, once again, Marshall McLuhan's assumption that "the medium is the message" ... In fact the use of this medium, among others, can be considered, in itself, a choice that directs each of the different phases of the migratory process, that is: the one in which migrants design, the one in which migrants realize, the one in which migrants tell. And finally, the one in which relationships between mi…
Integrating Retirement and Long-Term Care (LTC) Annuities Using a Notional Defined Contribution (NDC) Framework
2014
This paper examines the possibility of embedding public long-term care (LTC) insurance within the retirement pension system, i.e. introducing life care annuities (LCAs) into a notional defined contribution (NDC) framework. To do this we develop a multistate overlapping generations model (MOLG) that includes the so-called survivor dividend and give special attention to the assumptions made about mortality rates for dependent persons and LTC incidence rates, which largely determine the contribution rate assigned to LTC. The proposed model could be of interest to policymakers because it could be implemented without too much difficulty, it would universalize LTC coverage with a "fixed" cost, an…
An Integrated Notional Defined Contribution (NDC) Model with Retirement and Permanent Disability
2014
In this paper we develop a theoretical basis for integrating retirement and permanent disability using a generic NDC framework. The methodology used relies on a multistate overlapping generations model that includes the so-called survivor dividend. Currently this feature can only be found in the Swedish defined contribution (DC) scheme. The results achieved in the numerical example we present endorse the fact that the model works well. Special attention is given to the assumptions made about mortality rates for disabled people and disability incidence rates, which largely determine the contribution rate assigned to disability. The model could be of interest to policymakers because, after so…
Notes on Using the Hidden Asset or the Contribution Asset to Compile the Actuarial Balance for Pay-as-You-Go Pension Systems
2010
The aim of this paper is twofold: to determine the connection between the “contribution asset” and the “hidden asset” and to discover whether using either of them to compile the actuarial balance in Swedish-type pay-as-you-go pension systems will provide a reliable solvency indicator. We develop an overlapping generations model and apply it to the defined benefit pay-as-you-go system, although it would be just as valid for NDC systems. On the theoretical side the main conclusion is that, despite their very different natures, in a simplified scenario the contribution asset and the hidden asset could coincide if r - the real rate of interest - is equal to the growth in the wage bill. On the a…
Another defence of enumerated types
1991
I claim that enumerations, while of course not strictly necessary, are an elegant and useful facility in modern programming languages. I try to show that arguments recently given against them are weak at best and bogus a t worst, for general-purpose programming. Some related issues on types in programming languages are touched as well. These make it even more questionable whether Oberon marks progress or regress in language design.
Le deuil dans un monde connecté
2018
Cet article interroge la transformation des expériences de deuil à l’ère du numérique. En s’appuyant sur la théorie de l’hypermodernité, qui insiste sur les choix qu’impose la présence des technologies de l’information et de la communication dans la vie des individus, les auteurs insistent sur la porosité des frontières spatiales et temporelles des espaces numériques de commémoration du défunt. Cette porosité, qui n’existait pas dans les mêmes termes pour les espaces physiques de commémoration, force les individus à gérer par eux-mêmes la distance à prendre avec ces espaces où sont localisés les morts. Dans ce contexte, l’expérience du deuil se transforme significativement, ce qui se vérifi…
Circulating markers of retinal and optic nerve lipids
2013
Purpose Blood lipids are frequently used as a surrogate of lipid composition of peripheral tissues. Even if it is well accepted, such a relationship has never been clearly demonstrated for the eye. The aim of this study was to determine in human samples whether a lipidomic approach based on red blood cells could reveal associations between circulating and ocular lipid profiles. Methods Red blood cells, retinas and optic nerves were collected from 9 human donors. The lipidomic analyses on these tissues were done by both, gas chromatography and liquid chromatography coupled to an electrospray ionization source-mass spectrometer (LC-ESI-MS/MS). Results Gas chromatographic approach did not show…