Search results for "api"

Nonlinear pulse deceleration using photorefractive four-wave mixing

2009

We investigate the possibilities of the backward four-wave coupling based on the nonlocal photorefractive response for the nonlinear deceleration of light pulses. The presence of an additional external variable parameter—the pump intensity ratio—allows to improve the output characteristics of the decelerated pulses compared to those typical of the two-wave coupling. In particular, large delay times of the output pulses can be achieved without their strong amplification. This positive distinctive feature of the pulse deceleration occurs far from threshold of the mirrorless optical oscillation.

Pandemia e capitalismo del XXI secolo. Gestione securitaria della crisi tra individualizzazione neoliberista e ristrutturazione delle forze produttive

2020

Il contributo propone una riflessione sul Sars-Cov-2 quale epifenomeno del modo di produzione capitalistico ed in particolare della sua fase neoliberista. La pandemia, accelerando dinamiche e contraddizioni del capitale già preesistenti, è indubbiamente correlata agli aspetti più predatori del modo di produzione capitalistico, particolarmente nei confronti della natura e della biodiversità. Il saggio cerca anche di far riflettere su altri due aspetti emersi durante la pandemia: la gestione della pandemia, non solo in termini sanitari, è profondamente legata ai processi di individualizzazione, visti quali esiti delle trasformazioni sociali indotte dal neoliberismo; inoltre, il modo in cui si…

Coûts et avantages de l'éducation

1976

International audience

Affinities of European Upper Palaeolithic Homo sapiens and later human evolution

1992

Abstract We investigate the evolutionary affinities of European Upper Palaeolithic populations, using cranial measurements and multivariate techniques. Results indicate that cranial morphology of these populations accords with long-term phyletic trends within Pleistocene hominids. The data indicate an interpretation of differential velocities of change, and results do not support the view that Neanderthals contributed to recent populations.

Reasons for Clustering of Creative Industries in Italy and Spain

2012

Creative industries and creative employment tend to concentrate around medium and large cities, forming creative local systems. We follow a multidisciplinary approach, based on cultural and creative economics, evolutionary geography and urban economics, in order to analyse the forces behind the clustering of employment in creative industries in a comparative analysis of Italy and Spain. The results show different patterns of clustering of creative employment in both countries. The historical and cultural endowments, the average size of creative industries, the size of the place, the productive diversity, and the concentration of human capital and creative class have been determined to be co…

El crecimiento coartada de ricos

2002

The Market Price of Credit Risk and Economic States

2015

This paper proposes a market-wide credit risk factor for the US stock market and investigates its properties that are dependent on economic conditions. The market price of credit risk is found to be statistically significantly negative, supporting earlier studies. However, a sample-split analysis reveals that this negative pay-off is non-existent in a later subsample, indicating that the credit risk puzzle is based on temporary mispricing related to the earlier subsample. Further investigation shows that mispricing in the earlier period was mainly driven by positive pay-offs of low credit risk firms, while high credit risk firms did not generate significant returns in any of the sub-periods.

Institution en temps de crise

2023

Épopée clinique de survie d’une institution, ce travail original issu d’une recherche-action apporte des éléments de compréhension nouveaux sur ce qui se passe lors d'un choc exceptionnel et également des pistes pour penser concrètement la résilience collective.Sorte d’épopée clinique de survie d’une institution, cet ouvrage original, issu d’une recherche-action, apporte des éléments de compréhension nouveaux sur ce qui se passe lors d'un choc exceptionnel, et des pistes pour penser concrètement la résilience collective.Dans cet établissement accueillant des personnes souffrant d’un handicap psychique, le temps arrêté pour laisser le virus s’éloigner a généré une vie émotionnelle intense, t…

Human Capital Quality and Economic Growth

2007

07001 - Second version : September 2007; The estimation of the relationship between education and economic growth is marked by contradictions. These contradictions underline the lack of precision characterizing indicators of human capital. This paper constructs new indicators based on a pool of international surveys concerning pupil assessment. Thus, our new database, which includes 105 countries, makes it possible to confirm or not the positive relationship between education and growth. Taking into account the endogeneity of education, we measure a positive effect of qualitative indicators of human capital and the growth of countries between 1960 and 2000. The contribution of education to …

Analysis of Early Host Responses for Asymptomatic Disease Detection and Management of Specialty Crops

2010

The rapid and unabated spread of vector-borne diseases within US specialty crops threatens our agriculture, our economy, and the livelihood of growers and farm workers. Early detection of vector-borne pathogens is an essential step for the accurate surveillance and management of vector-borne diseases of specialty crops. Currently, we lack the tools that would detect the infectious agent at early (primary) stages of infection with a high degree of sensitivity and specificity. In this paper, we outline a strategy for developing an integrated suite of platform technologies to enable rapid, early disease detection and diagnosis of huanglongbing (HLB), the most destructive citrus disease. The re…