11 research outputs found
Construction of coarse-grained order-parameters in non-equilibrium systems
We develop a renormalization group (RG) procedure that includes important
system-specific features. The key ingredient is to systematize the coarse
graining procedure that generates the RG flow. The coarse graining technology
comes from control and operator theoretic model reduction. The resulting
"generalized" RG is a consistent generalization of the Wilsonian RG. We derive
the form of the projection operator from the dynamics of a nonlinear wave
equation and renormalize the distribution of initial conditions. The
probability density of the initial conditions is chosen to be the Boltzmann
weight for a standard -theory. In our calculation, we find that in
contrast to conventional implementations of the RG, na\"ive power counting
breaks down. The RG-equations that we derive are different from those derived
from the conventional RG.Comment: 13 pages, 0 figure
Demand, services and social aspects of mitigation
Assessment of the social science literature and regional case studies reveals how social norms, culture, and individual choices, interact with infrastructure and other structural changes over time. This provides new insight into climate change mitigation strategies, and how economic and social activity might be organised across sectors to support emission reductions. To enhance well-being, people demand services and not primary energy and physical resources per se. Focusing on demand for services and the different social and political roles people play broadens the participation in climate action
Sistemas agroalimentares localizados: possível "chave de leitura" sobre a maricultura em Santa Catarina
Impacts of fossil fuel extraction costs and carbon pricing on energy efficiency policies
International audienceEnergy efficiency is llikely to remain a valuable support for meeting climate challenges because it involves using less primary energy to produce the same final service. However, efficient solutions adapted to industrial and construction stakeholders are being put into question by the recent drop in crude oil prices and the development of non-conventional resources, which reduce the incentive to save energy. These strategies are also very sensitive to carbon pricing, which can stimulate or weaken incentives created by crude oil prices. We explore energy efficiency potential in relation to different fossil fuel extraction cost schemes crossed with a carbon pricing scenario built using various global carbon taxes. This sensitivity analysis relies on prospective studies conducted with the technical-and-economic, bottom-up optimization model TIAM-FR (TIMES Integrated Assessment Model developed at the Center for Applied Mathematics MINES ParisTech), where energy efficiency is endogenized: thus, the system reaches the optimal efficiency level according to cost constraints. This representation has been implemented and calibrated for the industrial, residential and tertiary sectors to improve understanding of the balance between energy efficiency potential when considering fossil fuel extraction costs and carbon pricing patterns
PP090—The 3.5-year mortality impact of drugs in secondary prevention of myocardial infarction in real-life (interim analysis of the eole cohort)
Reviewing the scope and thematic focus of 100 000 publications on energy consumption, services and social aspects of climate change: A big data approach to demand-side mitigation
As current action remains insufficient to meet the goals of the Paris agreement let alone to stabilize the climate, there is increasing hope that solutions related to demand, services and social aspects of climate change mitigation can close the gap. However, given these topics are not investigated by a single epistemic community, the literature base underpinning the associated research continues to be undefined. Here, we aim to delineate a plausible body of literature capturing a comprehensive spectrum of demand, services and social aspects of climate change mitigation. As method we use a novel double-stacked expert-machine learning research architecture and expert evaluation to develop a typology and map key messages relevant for climate change mitigation within this body of literature. First, relying on the official key words provided to the Intergovernmental Panel on Climate Change by governments (across 17 queries), and on specific investigations of domain experts (27 queries), we identify 121 165 non-unique and 99 065 unique academic publications covering issues relevant for demand-side mitigation. Second, we identify a literature typology with four key clusters: policy, housing, mobility, and food/consumption. Third, we systematically extract key content-based insights finding that the housing literature emphasizes social and collective action, whereas the food/consumption literatures highlight behavioral change, but insights also demonstrate the dynamic relationship between behavioral change and social norms. All clusters point to the possibility of improved public health as a result of demand-side solutions. The centrality of the policy cluster suggests that political actions are what bring the different specific approaches together. Fourth, by mapping the underlying epistemic communities we find that researchers are already highly interconnected, glued together by common interests in sustainability and energy demand. We conclude by outlining avenues for interdisciplinary collaboration, synthetic analysis, community building, and by suggesting next steps for evaluating this body of literature
Reviewing the scope and thematic focus of 100 000 publications on energy consumption, services and social aspects of climate change: a big data approach to demand-side mitigation * *Intended as contribution to the focus issue on ‘Demand-Side Solutions for Transitioning to Low-Carbon Societies’ in Environmental Research Letters.
As current action remains insufficient to meet the goals of the Paris agreement let alone to stabilize the climate, there is increasing hope that solutions related to demand, services and social aspects of climate change mitigation can close the gap. However, given these topics are not investigated by a single epistemic community, the literature base underpinning the associated research continues to be undefined. Here, we aim to delineate a plausible body of literature capturing a comprehensive spectrum of demand, services and social aspects of climate change mitigation. As method we use a novel double-stacked expert—machine learning research architecture and expert evaluation to develop a typology and map key messages relevant for climate change mitigation within this body of literature. First, relying on the official key words provided to the Intergovernmental Panel on Climate Change by governments (across 17 queries), and on specific investigations of domain experts (27 queries), we identify 121 165 non-unique and 99 065 unique academic publications covering issues relevant for demand-side mitigation. Second, we identify a literature typology with four key clusters: policy, housing, mobility, and food/consumption. Third, we systematically extract key content-based insights finding that the housing literature emphasizes social and collective action, whereas the food/consumption literatures highlight behavioral change, but insights also demonstrate the dynamic relationship between behavioral change and social norms. All clusters point to the possibility of improved public health as a result of demand-side solutions. The centrality of the policy cluster suggests that political actions are what bring the different specific approaches together. Fourth, by mapping the underlying epistemic communities we find that researchers are already highly interconnected, glued together by common interests in sustainability and energy demand. We conclude by outlining avenues for interdisciplinary collaboration, synthetic analysis, community building, and by suggesting next steps for evaluating this body of literature