Paris West University Nanterre La Défense

About: Paris West University Nanterre La Défense is a education organization based out in Paris, France. It is known for research contribution in the topics: Computer science & Politics. The organization has 895 authors who have published 1430 publications receiving 21712 citations.

Rhythms in early development

Abstract: Rhythms will be considered, here as in the sense of the isochrone recurrence of a same event. In the environment as well as in physiology and behavior, rhythms are omnipresent. Their periodicity covers different time scales. Thus, they have an impact on the lives of living beings. Since the perinatal period, the brain structures that make it possible to perceive the circadian rhythms are set up in utero and go on to mature during the peripartum. Nevertheless, the infant is progressively quickly becomes able to synchronize its physiological rhythms on the alternation day-night rhythm. Social rhythms play an important role in the development of this physiological synchronization as well as in the development of social interactions. Moreover, motor rhythms are spontaneously present in the infant’s movements and actions, underlining the existence of an internal tempo. This, conversely, allows the infant to adapt to the rhythms of its environment. Rhythmicity is thus a fundamental component of the quality of the social interactions. This explains why parental and cultural practices place rhythmicity at the center of the parent-infant relationship. It is also why when these rhythmic distortions arise due to maternal and/or infant clinical reasons the impact on parent-infant relationship is not negligible and must be seriously acknowledged and addressed.

Cross-species parallels in babbling: animals and algorithms

Abstract: A key feature of vocal ontogeny in a variety of taxa with extensive vocal repertoires is a developmental pattern in which vocal exploration is followed by a period of category formation that result...

Numerical Analysis in Econom(etr)ic ? Softwares: the Data-Memory Shortage Management

Abstract: The econometricians and the economic modelers have to know and use numerical analysis not only to have a good understanding of their results, but sometimes to built their own tools. The increasing tendency to the use of large-scale models leads the softwares to reach the limit of the saturation of the Data-Memory. In this paper, we present an intuitive procedure DMT - i.e. Disk-Matrix Technique - which could help econom(etr)ic software developers to correct the problem of the data-memory shortage during the building of their own software.

Oil Price and Financial Markets in the Main OPEC Countries

Abstract: This paper assesses the impact of oil prices on stock markets of the four major OPEC countries, namely Emirate Arab United, Kuwait, Saudi, Arabia and Venezuela, over the period spanning from 03/09/2000 to 03/12/2010. We aim at complementing the results from existing analyses, mainly focused on oil-importing countries, by using a novel technique, namely the evolutionary co-spectral analysis as defined by Priestley and Tong (1973). We find that co-movements between oil and stock markets can be either positive or negative. This interdependence is a medium-lived phenomenon, revealed on a three years and one quarter horizon, being weak in the short-run (ten months). Oil price shocks in periods of world turmoil or during fluctuations of the global business cycle (downturn or expansion, as for instance the 2008 financial crisis) have a significant impact on the relationship between oil and stock market prices in oil-exporting countries.