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Nombre de programmes trouvés : 1873
Conférences

le (11m49s)

Holocene Climatic Changes and Their Effect on Morphodynamics and Sedimentation in Campania

High-resolution paleoclimatic studies (e.g. 18O, 13C, CH4, MS, ect) provide 38 detailed reconstructions of the Holocene climatic variability, but they don’t are unable to provide direct informations about the effects of the climatic changes on landscape and human ecosystems. In order to assess the response of the subaerial geomorphologic/pedo-sedimentary systems to the climatic changes and their potential impact on the ancient human communities, detailed stratigraphical investigations in Campania (southern Italy) have been carried out. In addition to indications provided by litho-pedostratigraphical and geomorphological investigations, the study has recurred to historical, archaeological, and palaeobiological data. Some of the main global cyclical ...
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Conférences

le (15m24s)

The State of UK Climate Modelling

The UK recently invested £23 million (~US$40 million) in a program in Quantifying and Understanding the Earth SysTem (QUEST). The final product of this investment is the state-of-the-art QUEST Earth System Model (QUESM), which is comprised of the most comprehensive modeling and understanding of terrestrial, atmosphere, and marine processes ever built. QUESM is to be linked with the world-leading Hadley Centre’s GCM to assess and understand changes in the Earth system with respect to climate and global change. Here, I present the state of UK climate modeling, an overview of the QUEST Earth System Model, and detail the individual sub-models ...
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Conférences

le (10m13s)

Data-Model Fusion Approach in Global Change Research: Recent Development and Future Challenges

It is increasingly recognized that global change research requires methods and strategies for combing process models and data in systematic ways. This is leading to research towards the application of model-data fusion approach. The model-data fusion is a new quantitative approach to model analysis and data assimilation that provides a high level of empirical constraint over model predictions based on observations. Applications of model-data fusion require (a) a model that describes the underlying physical, chemical and biological processes, (b) experimental observations and (c) an optimization tool. The optimization tool is used to find optimal estimates of model parameters or states ...
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Conférences

le (14m29s)

Setting Cumulative Emissions Targets to Reduce the Risk of "Dangerous" Climate Change

The ultimate objective of climate change mitigation is to reduce the amount of anthropogenic greenhouse gas (GHG) emissions in order to achieve “stabilization of greenhouse gas concentrations in the atmosphere at a level that would prevent dangerous anthropogenic interference with the climate system” (UNFCCC, Article 2). This statement raises a number of questions regarding (i) what “dangerous interference” means, (ii) what GHG concentration level may considered “safe”, and (iii) what emissions pathway should be taken towards stabilization. Here we present a novel approach to coupled climate-carbon cycle modelling which allows one to estimate the probability that any given level of ...
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Conférences

le (35m28s)

Industrial and Environmental Policies: Reciprocal Impacts

Total as a key player of the Oil and Gas industry is providing answers to 25 environmental challenges. In that respect, it has already developed environmental objectives and policies. Its environmental footprints is being assessed, controlled and reduced with a set of concrete means to improve its performance, a better selection of major challenges and a better report to external stake holders. Energy and climate issues are inextricably interwoven, which means that we have to help to reconcile the objectives of today’s society, pursuing economic growth while protecting the climate for future generations. Faced with this predicament, we are ...
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Conférences

le (12m5s)

The Costs of Strategic Adaptation in a Simple Conceptual of Climate Change

A simple theoretical model of the process of strategic adaptation to climate change is proposed. Climate change is represented by a non-stationary Markov process on the space of climate states, and strategic adaptation by a simple resource allocation task in which agents incur costs when moving resources from one activity to another. A stationary analysis allows diagnostics that quantify the net costs of climate change, and the long-run benefits to adaptation, to be defined. A full dynamic analysis of the model 74 allows for the computation of the costs of negotiating the transition between two stationary climate regimes. We analyze ...
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Conférences

le (29m19s)

Le rôle d'Agfa dans la constitution de structures photographiques en Allemagne de l'Ouest après 1945

Au sortir de la guerre, l'industrie photographique est dans une position difficile. Les grands groupes ont largement servi le régime national-socialiste et doivent après-guerre opérer un tour de force idéologique à l'échelle nationale et mondiale. De plus, la clientèle amateur sur laquelle reposaient leurs santés économiques et toute la pratique photographique durant le régime nazi, voit ses structures étatiques tomber en désuétude. Agfa le plus grand groupe allemand, va alors après 1945 adopter une posture qui renouvelle complètement son image. Sous la houlette de Bruno Uhl, il devient le grand mécène du champ photographique en Allemagne de l'Ouest et finance ...
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Conférences

le (31m9s)

L'alliance entre art et commerce aux Etats-Unis dans les années 1930-1950 : l'exemple du mécénat de Walter Paepcke (Container Corporation of America)

Industriel américain issu d'une famille d'origine allemande, Walter Paepcke (1896-1960) s'impose dès les années 1930 en tant que mécène de la culture et de l'art moderne aux Etats-Unis. A la tête de la plus importante compagnie de packaging de l'entre-deux guerres, la Container Corporation of America (C.C.A.), il engage Egbert Jacobson au poste de directeur artistique, qui passe de nombreuses commandes publicitaires à des artistes américains et européens émigrés tels que W. de Kooning, A.M. Cassandre, F. Léger, Man Ray, G. Kepes, H.Bayer ou encore H.Matter. Ces derniers en particulier se démarqueront par un usage régulier et novateur de la ...
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Conférences

le (21m27s)

La chambre de Commerce pour une nouvelle image du territoire : la Nouvelle Foire de Rome

Les premières hypothèses d’une mission photographique organisée par la Chambre de Commerce de Roma sont nées avec le projet de construire une histoire économique de la ville de Rome à travers les images. Les difficultés pour répertorier les photographies du passé montrent l’importance de réaliser une archive de photographies contemporaines afin de rendre compte des changements socio-économiques d’une ville telle que Rome. Cette exigence a porté la Chambre de Commerce à promouvoir des campagnes photographiques et vidéo en s’adressant à de jeunes artistes dans le but de témoigner les changements urbains actuels. Cette intervention mettra en avant les résultats ...
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