ESAIM: Proceedings and Surveys最新文献

Some recent advances on the method of moments in kinetic theory 动力学理论中矩法的一些最新进展

ESAIM: Proceedings and Surveys Pub Date : 2023-12-01 DOI: 10.1051/proc/202375086

Teddy Pichard

引用次数: 0

Recent progress on limit theorems for large stochastic particle systems 大型随机粒子系统极限定理的最新进展

ESAIM: Proceedings and Surveys Pub Date : 2023-12-01 DOI: 10.1051/proc/202375002

Max Fathi, Pierre Le Bris, A. Menegaki, Pierre Monmarche, Julien Reygner, Milica Tomasevic

引用次数: 0

Journées SMAI 2021 - Editors’ word Journées SMAI 2021 - 编辑的话

ESAIM: Proceedings and Surveys Pub Date : 2023-12-01 DOI: 10.1051/proc/202375001

M. Doumic, Sébastien Gadat, Quentin Mérigot

引用次数: 0

On convex numerical schemes for inelastic contacts with friction 关于有摩擦的非弹性接触的凸数值方案

ESAIM: Proceedings and Surveys Pub Date : 2023-12-01 DOI: 10.1051/proc/202375024

Helene Bloch, Aline Lefebvre-Lepot

{"title":"On convex numerical schemes for inelastic contacts with friction","authors":"Helene Bloch, Aline Lefebvre-Lepot","doi":"10.1051/proc/202375024","DOIUrl":"https://doi.org/10.1051/proc/202375024","url":null,"abstract":"This paper reviews the different existing Contact Dynamics schemes for the simulation of granular media, for which the discrete incremental problem is based on the resolution of convex problems. This type of discretization has the great advantage of allowing the use of standard convex optimization algorithms. In the case of frictional contacts, we consider schemes based on a convex relaxation of the constraint as well as a fixed point scheme. The model and the computations leading to the discrete problems are detailed in the case of convex, regular but not necessarily spherical particles. We prove, using basic tools of convex analysis, that the discrete optimization problem can be seen as a minimization problem of a global discrete energy for the system, in which the velocity to be considered is an average of the pre- and post-impact velocities. A numerical study on an academic test case is conducted, illustrating for the first time the convergence with order 1 in the time step of the different schemes. We also discuss the influence of the convex relaxation of the constraint on the behavior of the system. We show in particular that, although it induces numerical dilatation, it does not significantly modify the macrosopic behavior of a column collapse en 2d. The numerical tests are performed using the code SCoPI.","PeriodicalId":505884,"journal":{"name":"ESAIM: Proceedings and Surveys","volume":"60 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139191821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ultra-weak variational formulation for heterogeneous Maxwell problem in the context of high performance computing 高性能计算背景下异质麦克斯韦问题的超弱变分公式

ESAIM: Proceedings and Surveys Pub Date : 2023-12-01 DOI: 10.1051/proc/202375096

S. Pernet, Margot Sirdey, S. Tordeux

引用次数: 0

Bayes in action in deep learning and dictionary learning 贝叶斯在深度学习和词典学习中的应用

ESAIM: Proceedings and Surveys Pub Date : 2023-11-01 DOI: 10.1051/proc/202374090

Julyan Arbel, Hong-Phuong Dang, Clément Elvira, Cédric Herzet, Zacharie Naulet, M. Vladimirova

引用次数: 0

Random matrices and random graphs 随机矩阵和随机图形

ESAIM: Proceedings and Surveys Pub Date : 2023-11-01 DOI: 10.1051/proc/202374137

M. Capitaine, S. Coste, F. Gabriel, P. Maillard, C. Mailler

引用次数: 0

Journées MAS 2020 MAS 2020 日

ESAIM: Proceedings and Surveys Pub Date : 2023-11-01 DOI: 10.1051/proc/202374001

C. Marteau, Marguerite Zani

引用次数: 0

Dynamical systems approaches to the study of climate with applications to 2022 extreme weather events 采用动力系统方法研究气候，并将其应用于 2022 年极端天气事件

ESAIM: Proceedings and Surveys Pub Date : 2023-11-01 DOI: 10.1051/proc/202374051

Davide Faranda

{"title":"Dynamical systems approaches to the study of climate with applications to 2022 extreme weather events","authors":"Davide Faranda","doi":"10.1051/proc/202374051","DOIUrl":"https://doi.org/10.1051/proc/202374051","url":null,"abstract":"Between 1980 and 2020, extreme weather and climate change events have caused, in Europe, up to 520 billion euros in economic losses, according to a 2022 report released by the European Environment Agency. Many weather extreme events such as heatwaves, droughts, tropical cyclones and cold spells will change in frequency and/or intensity due to the ongoing anthropogenic climate change, driving our planet to unprecedented threats. From a theoretical point of view, such extreme events are difficult to characterize because they are rare and they do occur at specific spatiotemporal scales of the dynamics, not necessarily the largest or the smallest of the climate system. Their study requires a framework capable of tracking their probability of occurrence, predictability and persistence. In this manuscript I will describe how dynamical systems theory helps in building numerical and theoretical tools for weather extreme events, using recurrences of patterns termed analogues. These tools can be used to study whether climate change do already affect the dynamics of extremes. Three recent examples will be analysed in details, namely the Argentinian heatwave, the Greek cold spell and the windstorm Malik, all occurred in January 2022.","PeriodicalId":505884,"journal":{"name":"ESAIM: Proceedings and Surveys","volume":"83 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139292897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Some results on statistics and functional data analysis 关于统计和功能数据分析的一些成果

ESAIM: Proceedings and Surveys Pub Date : 2023-11-01 DOI: 10.1051/proc/202374002

Sophie Dabo-Niang, Julien Ah-Pine, Pamela Llop, A. Yao

引用次数: 0