Search results for "limits to growth"
showing 3 items of 3 documents
Optimal Sustainable Policies Under Pollution Ceiling: the Demographic Side
2014
AD; International audience; We study optimal sustainable policies in a benchmark logistic world (where both population and technological progress follow logistic laws of motion) subject to a pollution ceiling. The main policy in the hands of the benevolent planner is pollution abatement, ultimately leading to the control of a dirtiness index as in the early literature of the limits to growth literature. Besides inclusion of demographic dynamics, we also hypothesize that population size affects negatively the natural regeneration or assimilation rate, as a side product of human activities (like increasing pollution, deforestation, ...). We first characterize optimal sustainable policies. Und…
Neural Multimodal Belief Tracker with Adaptive Attention for Dialogue Systems
2019
Multimodal dialogue systems are attracting increasing attention with a more natural and informative way for human-computer interaction. As one of its core components, the belief tracker estimates the user's goal at each step of the dialogue and provides a direct way to validate the ability of dialogue understanding. However, existing studies on belief trackers are largely limited to textual modality, which cannot be easily extended to capture the rich semantics in multimodal systems such as those with product images. For example, in fashion domain, the visual appearance of clothes play a crucial role in understanding the user's intention. In this case, the existing belief trackers may fail …
Durée et catastrophe. Régimes temporels et conflits écologiques à l’heure de la globalisation de l’environnement
2020
Elaborating from anthropology of nature and semiotic of culture, the work aims to illustrate that every ecological crisis is, also, a temporality crisis. In order to do so, it compares different visions of future – and, therefore, of the present of the enunciator – that shape international environmental crisis between ’60 and ’70. The first, insisting on risks, comes from Massachusetts Institute of Technology, advising about the Limits to Growth; the second, insisting on risk normalization, comes from UN first Earth Summit; both discourses are registered in reports published in 1972 and read worldwide. The analysis shows that while the MIT report successfully points the temporality crisis r…