The impact of technological and organizatioanl changes on labor flows. Evidence on French establishments

This paper investigates the effect of organizational and technological changes on job stability of different occupations in France. We first develop a basic matching model with endogenous job destsruction. It provides a structure to the empirical analysis, where we extensively exploit a unique data set on a representative sample of French establishments. The adoption of information technologies is positively correlated to labor flows of blue collar workers while most of the new workplace organizational practices positively influence the managers’ turnover.

Sustainability: extending the virtue of personal data legislation to goods and products

This contribution addresses the notion of sustainability and its modalities as an element of public order enabling the European Union to regain its technological sovereignty through the emergence of a possible new environmental measure. Constraining the manufacturers, this measure is compliant with the free markets requirements. Only the intellectual property rights may constitute a real obstacle to its application

Investigating the effectiveness of an efficient label placement method using eye movement data

This paper focuses on improving the efficiency and effectiveness of dynamic and interactive maps in relation to the user. A label placement method with an improved algorithmic efficiency is presented. Since this algorithm has an influence on the actual placement of the name labels on the map, it is tested if this efficient algorithms also creates more effective maps: how well is the information processed by the user. We tested 30 participants while they were working on a dynamic and interactive map display. Their task was to locate geographical names on each of the presented maps. Their eye movements were registered together with the time at which a given label was found. The gathered data reveal no difference in the user's response times, neither in the number and the duration of the fixations between both map designs. The results of this study show that the efficiency of label placement algorithms can be improved without disturbing the user's cognitive map. Consequently, we created a more efficient map without affecting its effectiveness towards the user

Expectation-Driven Interaction: a Model Based on Luhmann's Contingency Approach

We introduce an agent-based model of interaction, drawing on the contingency approach from Luhmann\'s theory of social systems. The agent interactions are defined by the exchange of distinct messages. Message selection is based on the history of the interaction and developed within the confines of the problem of double contingency. We examine interaction strategies in the light of the message-exchange description using analytical and computational methods.Contingency, Message Exchange Model, Interaction, Expectation-Expectation, Asymptotic Analysis

Technological and organizational changes, and labor flows: evidence on French establishments

This paper investigates the effects of organizational and technological changes on job stability of different occupational categories in France. We conduct an empirical analysis in which we make extensive use of a unique data set on a representative sample of French establishments. Working with various indicators of labor flows (gross labor flows, hiring rate, firing rate, net labor flows and churning flows), we find that the use of new technology seems to have a positive effect on aggregate job turnover and, more specifically, turnover among manual workers. In contrast, innovative workplace organizational practices are related to lower turnover among clerical workers and intermediate professionals and have a positive effect on churning among manager

Sweeps, Polytopes, Oriented Matroids, and Allowable Graphs of Permutations

A sweep of a point configuration is any ordered partition induced by a linear func- tional. Posets of sweeps of planar point configurations were formalized and abstracted by Goodman and Pollack under the theory of allowable sequences of permutations. We introduce two generalizations that model posets of sweeps of higher dimensional configurations. Sweeps of a point configuration are in bijection with faces of an asso- ciated sweep polytope. Mimicking the fact that sweep polytopes are projections of permutahedra, we define sweep oriented matroids as strong maps of the braid oriented matroid. Allowable sequences are then the sweep oriented matroids of rank 2, and many of their properties extend to higher rank. We show strong ties between sweep oriented matroids and both modular hyperplanes and Dilworth truncations from (unoriented) matroid theory. Pseudo-sweeps are a generalization of sweeps in which the sweep- ing hyperplane is allowed to slightly change direction, and that can be extended to arbitrary oriented matroids in terms of cellular strings. We prove that for sweepable oriented matroids, sweep oriented matroids provide a sphere that is a deformation retract of the poset of pseudo-sweeps. This generalizes a property of sweep polytopes (which can be interpreted as monotone path polytopes of zonotopes), and solves a special case of the strong Generalized Baues Problem for cellular strings. A second generalization are allowable graphs of permutations: symmetric sets of permutations pairwise connected by allowable sequences. They have the structure of acycloids and include sweep oriented matroid

Une étude exploratoire de l'effet de préférence pour les lettres du nom : SEBastien préfère-t-il SEB ?.

Le Name Letter Effect (NLE) désigne la préférence d’un individu pour les lettres de son nom, notamment ses initiales. Il s’inscrit dans la théorie de l’égotisme implicite, selon laquelle les préférences pour des objets faisant référence à soi est susceptible d’influencer les attitudes et les choix. Cette recherche, de nature exploratoire, propose d’abord un état de l’art sur le NLE et ses conséquences sur les préférences pour des marques partageant des lettres avec le nom. Trois études permettent de 1) répliquer l’effet de préférence pour les lettres du nom, 2) montrer que la préférence pour les lettres du nom peut influencer la préférence pour une marque similaire au nom 3) montrer que cette préférence ne s’observe que lorsque la marque est fortement similaire au prénom et lorsque l’évaluation se fait de manière spontanéeMarketing; Prénom; Marques; Egotisme implicite;

Modelling the Joint Distribution of Income and Wealth

This paper considers a parametric model for the joint distribution of income and wealth. The model is used to analyze income and wealth inequality in five OECD countries using comparable household-level survey data. We focus on the dependence parameter between the two variables and study whether accounting for wealth and income jointly reveals a different pattern of social inequality than the traditional 'income only' approach. We find that cross-country variations in the dependence parameter effectively accounts only for a small fraction of cross-country differences in a bivariate measure of inequality. The index appears primarily driven by differences in inequality in the wealth distribution

Many regular triangulations and many polytopes

We show that for fixed $d>3$ and $n$ growing to infinity there are at least $(n !)^{d-2 \pm o(1)}$ different labeled combinatorial types of $d$-polytopes with $n$ vertices. This is about the square of the previous best lower bounds. As an intermediate step, we show that certain neighborly polytopes (such as particular realizations of cyclic polytopes) have at least $(n !)^{\lfloor(d-1) / 2\rfloor \pm o(1)}$ regular triangulations

Learning to Synchronously Imitate Gestures Using Entrainment Effect

International audienceSynchronisation and coordination are omnipresent and essential in humans interactions. Because of their unavoidable and unintentional aspect, those phenomena could be the consequences of a low level mechanism: a driving force originating from external stimuli called the entrainment effect. In the light of its importance in interaction and wishing to define new HRI, we suggest to model this entrainment to highlight its efficiency for gesture learning during imitative games and for reducing the computational complexity. We will put forward the capacity of adaptation offered by the entrainment effect. Hence, we present in this paper a neural model for gesture learning by imitation using entrainment effect applied to a NAO robot interacting with a human partner