HAL-UNICE

    Spontaneous ordering in a cold atomic cloud

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    International audienceno abstrac

    Spatial Organisation of the Traditional Cultural Landscape of the Evenks (Example of South Yakutia)

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    International audienceThe article describes the main spatial properties of traditional cultural landscape of the Evenks in South Yakutia. The study is based on the of field research conducted on key areas of Evenks in South Yakutia – interviews, representation modelling, observations – and the use of Sentinel 2A remote sensing for mapping and contextualising the geographic environment of living places. The characteristic features of the territory of traditional use of natural resources is described; more especially the relations between economic activity and the spatial model of cultural landscape. Management of natural resources in the traditional culture of the Evenks is a balanced economic activity, adapted to the local natural conditions and formed under their influence. The main functional factor of traditional Evenki cultural landscape is reindeer herding and hunting.The traditional cultural landscape of Evenk is presented from two perspectives: objective as a geographic object of analysis (landscape and visual, formal aspect) and subjective - symbolic and humanistic aspect (mythological, toponymic features are analysed). Joint subjective and objective approaches bring out a spatial model of the Evenks cultural landscape characterised by a centric multi-zonal structure; recognised and modelled by the remote sensing. The spatial properties of traditional cultural landscape along with the Evenki material culture highlight spiritual and religious, moral and aesthetic values. The research project “Landscape ontology: semantics, semiotics, and geographic modelling” (№ 15-18-20047) funded by the Russian Science Foundation

    Natural hazard resilient cities

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    International audienc

    The impact of the quality of VC financing and monitoring on the survival of IPO firms

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    International audienc

    Consecutive and non-consecutive heteroclinic cycles in Hopfield networks

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    International audienceWe review and extend the previous work where a model was introduced for Hopfield-type neural networks, which allows for the existence of heteroclinic dynamics between steady patterns. This dynamics is a mathematical model of periodic or aperiodic switching between stored information items in the brain, in particular, in the context of sequential memory or cognitive tasks as observed in experiments. The basic question addressed in this work is whether, given a sequence of steady patterns, it is possible by applying classical learning rules to build a matrix of connections between neurons in the network, such that a heteroclinic dynamics links these patterns. It has been shown previously that the answer is positive in the case where the sequence is a so-called simple consecutive cycle. We show that on the contrary the answer is negative for a non-simple cycle: heteroclinic dynamics does still exist; however, it cannot follow the sequence of patterns from which the connectivity matrix was derived

    Protection de la nature, risques et environnement

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    En collaboration avec Anne Rainaud, Florence Nicoud, Fanny Catroux, CĂ©cile LaporteNational audienc

    Entrepreneurship and Sustainability Goals: The Need for Innovative and Institutional Solutions

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    International audienceThe relationship between entrepreneurship and sustainable development has received considerable attention from academics and policymakers, as society searches for solutions leading to sustainability. The role of innovation and institutional quality in reaching sustainability goals is one of the key areas tackled by the current sustainable development debate, particularly in developing countries. Using a modified environmental Kuznets curve model, this study attempts to better improve our understanding of the critical roles of innovation, institutional quality, and entrepreneurship in the structural change toward a sustainable future in Africa. The empirical results show that both formal and informal entrepreneurship are conducive to less environmental quality and sustainability in 17 African countries where the contribution of informal entrepreneurship is much higher compared to the formal one. However, the relationship between entrepreneurship and sustainable development becomes strongly positive when the levels of innovation and institutional quality are higher. This research makes a contribution to this important emerging research area in that it clarifies conditions through which countries and firms in Africa can move toward more sustainable products and services. Formalizing the informal sector can lead to the improvement of the environmental and economic performance

    Face au risque, dans le temps, par rapport aux autres : langage et rationalité dans trois dimensions

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    International audienceThis paper conducts a systematic comparison of behavioral economics's challenges to the standard accounts of economic behaviors within three dimensions: under risk, over time and regarding other people. A new perspective on two underlying methodological issues, i.e., interdisciplinarity and the positive/normative distinction, is proposed by following the entanglement thesis of Hilary Putnam, Vivian Walsh and Amartya Sen. This thesis holds that facts, values and conventions have interdependent meanings in science which can be understood by scrutinizing formal and ordinary language uses. The goal is to provide a broad and self-contained picture of how behavioral economics is changing the mainstream of economics
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