HAL Paris Dauphine-PSL
Not a member yet
21932 research outputs found
Sort by
La politisation du vécu handicapé. Ressources et contraintes de la mobilisation antivalidiste en France
No full textInternational audienceBy analyzing anti-ableist collectives in France, this article explores the emergence of a mobilisation based on the "politicization of experience" of its members. It has come up against a number of obstacles, linked to the characteristics of the disabled population and the history of the disability movement. However, over the last ten years, disabled activists have been de-individualising their experiences and placing them within a systemic framework. This has led to the creation of organisations whose claims are part of a new definition of the public problem of disability, competing with the historically dominant definition. The recurring expression of fatigue among anti-ableist activists shows that these obstacles remain, explaining the instability of this mobilisation and the recurring disengagement of its members, despite their attachment to the cause.En analysant les collectifs antivalidistes en France, cet article explore l’émergence d’une mobilisation basée sur la « politisation du vécu » de ses membres. Elle s’est heurtée à plusieurs contraintes liées aux caractéristiques de la population handicapée et à l’histoire de l’espace de la cause du handicap. Cependant, depuis une dizaine d’années, des militants handicapés désingularisent leurs expériences et les inscrivent dans un cadre systémique. Cela a permis la création de collectifs dont les revendications s’inscrivent dans une nouvelle définition du problème public du handicap, concurrençant la définition historiquement dominante. L’expression récurrente de la fatigue des antivalidistes atteste du maintien de ses contraintes, qui participent de l’instabilité de cette mobilisation et de la récurrence du désengagement de ses membres, malgré leur attachement à la cause
Gender Stereotypes About Career and Family Are Stronger in More Economically Developed Countries and Can Explain the Gender Equality Paradox
No full textInternational audienceUsing data from Project Implicit collected between 2005 and 2020, comprising 1,489,721 observations in 111 countries, we find that implicit and explicit gender stereotypes about career and family are more pronounced in more economically developed countries. Besides, these gender stereotypes are strongly correlated at the country level with gender differences in values (such as family values), self-reported personality traits (such as agreeableness or dependence), and occupational preferences (such as health-related occupations), and may account for the fact that these gender imbalances are “paradoxically” stronger in more economically developed countries (the so-called “gender equality paradox”). In line with social role theory, our findings suggest that there are in developed countries strong gender stereotypes about career and family, which may at least partly explain the persistence or even the “paradoxical worsening” of a number of gender differences in these countries, despite generally high levels of gender equality in other areas
Observability properties of the singular Grushin equation
No full textWe study the observability properties of the Grushin equation with an inverse square potential, whose singularity occurs at the boundary of two-dimensional rectangular domains or in the interior of the domain in higher dimensions. In some specific configurations of the observation set, we obtain the exact minimal time of observability. The analysis we present relies on recent Carleman estimates obtained by K. Beauchard, J. Dardé, and S. Ervedoza. As a byproduct of these results, we observe, for the heat equation associated to the Laplace-Beltrami operator on almost-Riemannian manifolds, a dependence of the minimal time of observability on the dimension of the singularity
Improved well-posedness for the limit flow of differentiation of roots of polynomials
No full textIn this paper, we study the partial differential equation on the circle that was heuristically obtained by Steinerberg [32] on the real line and which represents the evolution of the density of the roots of polynomials under differentiation. After integrating the partial differential equation in question, we observe that it can be treated with the theory of viscosity solutions. This equation at hand is a non linear parabolic integro-differential equation which involves the elliptic operator called the half-Laplacian. Due to the singularity of the equation, we restrict our study to strictly positive initial condition. We obtain a comparison principle for solutions of the primitive equation which yields uniqueness, existence, continuity with respect to initial condition. We also present heuristics to justify that the system of particles indeed approximates the solution of the equation
Laurent series expansion for MA(∞) representation of mixed causalnoncausal autoregressive processes
No full textSelf-employment, health, and health care: When the going gets tough, the tough get going?
No full textInternational audienceThis study provides a life-course analysis of the relationship between self-employment, health, and health care use among individuals aged 50 and older in Europe. Using data from the Survey of Health, Ageing, and Retirement in Europe (SHARE), we apply first-difference and dynamic panel data models that go beyond standard approaches in mitigating endogeneity concerns. Our findings show that the self-employed enjoy better health at younger ages, consistent with a selection effect. In addition, they experience a steeper decline in physical health over time. We also document two distinct phases of health care use: during working life, the self-employed are more likely to be hospitalised, suggesting delayed care until acute needs arise; after retirement, the number of medical visits increases, consistent with a lower opportunity cost of care
Large-scale genome-wide association study of 398,238 women unveils seven novel loci associated with high-grade serous epithelial ovarian cancer risk
No full textInternational audienceABSTRACT Background Nineteen genomic regions have been associated with high-grade serous ovarian cancer (HGSOC). We used data from the Ovarian Cancer Association Consortium (OCAC), Consortium of Investigators of Modifiers of BRCA1 / BRCA2 (CIMBA), UK Biobank (UKBB), and FinnGen to identify novel HGSOC susceptibility loci and develop polygenic scores (PGS). Methods We analyzed >22 million variants for 398,238 women. Associations were assessed separately by consortium and meta-analysed. OCAC and CIMBA data were used to develop PGS which were trained on FinnGen data and validated in UKBB and BioBank Japan Results Eight novel variants were associated with HGSOC risk. An interesting discovery biologically was finding that TP53 3’-UTR SNP rs78378222 was associated with HGSOC (per T allele relative risk (RR)=1.44, 95%CI:1.28-1.62, P=1.76×10 -9 ). The optimal PGS included 64,518 variants and was associated with an odds ratio of 1.46 (95%CI:1.37-1.54) per standard deviation in the UKBB validation (AUROC curve=0.61, 95%CI:0.59-0.62). Conclusions This study represents the largest GWAS for HGSOC to date. The results highlight that improvements in imputation reference panels and increased sample sizes can identify HGSOC associated variants that previously went undetected, resulting in improved PGS. The use of updated PGS in cancer risk prediction algorithms will then improve personalized risk prediction for HGSOC
Beyond uniqueness: Relaxation calculus of junction conditions for coercive Hamilton-Jacobi equations
No full textInternational audienceA junction is a particular network given by the collection of half lines glued together at the origin. On such a junction, we consider evolutive Hamilton-Jacobi equations with coercive Hamiltonians. Furthermore,we consider a general desired junction condition at the origin, given by some monotone function .There is existence and uniqueness of solutions which only satisfy weakly the junction condition (at the origin, they satisfy either the desired junction condition or the PDE).We show that those solutions satisfy strongly a relaxed junction condition (that we can recognize as an effective junction condition). It is remarkable that this relaxed condition can be computed in three different but equivalent ways: 1) using viscosity inequalities, 2) using Godunov fluxes, 3) using Riemann problems.Our result goes beyond uniqueness theory, in the following sense: solutions to two different desired junction conditions and do coincide if
In This Apportionment Lottery, the House Always Wins
No full textInternational audienceRandomized Apportionment: A Fairer Distribution of Seats The question of how to apportion the seats of the U.S. House of Representatives to states has fueled century-long political debates and sparked mathematical theory. Traditional deterministic methods, such as the Hamilton method or the currently used Huntington–Hill method, may result in paradoxes or substantially deviate from proportionality. In their paper “In This Apportionment Lottery, the House Always Wins,” Gölz, Peters, and Procaccia propose a randomized approach that ensures each state receives its exact proportional share of seats in expectation and its proportional share, up to rounding, ex post. By incorporating randomization, the authors argue, the system can better adhere to the principle of proportional representation, minimizing the impact of small counting errors and ensuring fairness over time. In addition, their approach achieves house monotonicity, a property that prevents counterintuitive outcomes when the total number of seats changes. This is achieved through a novel cumulative rounding technique, a generalization of dependent rounding on bipartite graphs with potential applications beyond apportionment, including EU commission nominations and resource allocation
Integrating problem structuring methods with formal design theory: collective water management policy design in Tunisia
No full textInternational audienceGroundwater management, especially in Mediterranean regions such as Tunisia, is challenging due to diverse stakeholder interests and the arid climate, which makes the sustainability of water resources extremely difficult. This paper proposes an innovative approach to the design of decision and policy alternatives by combining Problem Structuring Methods (PSMs) and the participatory tool based on the Concept-Knowledge (C-K) theory, named Policy-Knowledge, Concepts, Proposals (P-KCP). In a multi-methodological perspective, using Cognitive Maps and Value Trees in combination with P-KCP, the study aims to innovatively generate alternatives to address the sustainability issue of the case study, namely collective groundwater management. The paper provides a practical and adaptable guide to fostering innovation for policy design and generation of alternatives. By bridging decision theory and design theory, the study addresses the methodological gap in alternatives generation and highlights the role of C-K theory for supporting innovative design processes. Integrating PSMs and C-K theory, the multi-methodology advocates participatory approaches to address complex sustainability challenges, provides an adaptable, replicable tool, and encourages the creation of unconventional solutions. Ultimately, this paper offers new collective practices for groundwater management, expanding the set of alternatives through the integration of PSMs and C-K theory and reflecting on the applied multi-methodology