搜索结果: 1-15 共查到“理学 driven”相关记录411条 . 查询时间(0.168 秒)
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Branching random walks driven by products of random matrices
随机矩阵 乘积驱动 分支随机 游走
2023/4/18
A branching random walk is a system of particles, where each particle gives birth to new particles of the next generation, which move on $\mathbb R^d$ according to some probability law. In this talk, ...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Bootstrap-based Statistical Analysis for Multi-period Data-driven Inventory Models with Seasonal Demand
自举 统计分析 季节性需求 多周期数据 驱动库存模型
2023/4/24
We study multi-period inventory control systems in which managers face seasonal demands with unknown distributions and make inventory decisions based on past demand data. It can be shown that a data-d...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Model-Guided Data Driven Extremum Seeking Control
模型引导 数据驱动 极值 控制
2023/5/5
Extremum seeking control(ESC)is a class of data-driven optimization algorithms which can drive the output of an unknown dynamic system to its optimal value with respect to some cost function by using ...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Multi-scale analysis-driven tourism forecasting: Insights from the peri-COVID-19
多尺度分析 驱动 旅游预测 COVID-19 周边见解
2023/5/5
Tourism managers and practitioners rely on accurate demand forecasting and well-informed management guidance. Given the pandemic's consequences on tourism, future analysis in the during-epidemic era i...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Data-Driven Production-Service Planning: Ambiguity Aversion, Service-Dependency and Cross-Product Heteroskedasticity
数据驱动 生产-服务规划 歧义厌恶 服务依赖 跨产品异端性
2023/5/8
We consider a joint production-service planning problem with demand uncertainty, where the manufacturer aims to determine the portfolio of products with the associated service levels and the capacity ...
In an oceanic omen for climate change’s intensifying effects, Cornell-led research shows that seagrass – through large swaths of intertidal meadows in the Pacific Northwest – suffers from a lesion-fil...
[成果]北京师范大学物理学系张金星和沈卡小组与合作者以“Strain-Driven Dzyaloshinskii-Moriya Interaction for Room-Temperature Magnetic Skyrmions”为题发表学术成果（图）
磁性体系；多铁性材料；磁电耦合
2021/11/1
Dzyaloshinskii-Moriya（DM）相互作用，是一种反对称自旋交换作用，于上个世纪六十年代由I. Dzyaloshinskii利用唯象理论提出，并由T. Moriya在超交换相互作用中考虑自旋轨道耦合而发展的微观理论，被用来解释磁性体系中诸多新奇物理现象（自旋玻璃中的各向异性场、多铁性材料中的磁电耦合、自旋波的非对称色散关系、非共线磁结构等）。近十几年来，由于DM相互作用而实现的螺旋...
Human-driven climate change only half the picture for krill
krill climate change natural variability ecological system
2021/8/4
New research about the fate of krill -- one of the most abundant species on Earth -- during this century has important implications for not only the Antarctic food web, but for the largest commercial ...
Climate and Nutrient-Driven Regime Shifts of Cyanobacterial Communities in Low-Latitude Plateau Lakes
Climat Lakes Plateau cyanobacteria
2021/7/23
Cyanobacterial blooms that form in response to climate warming and nutrient enrichment in freshwater lakes have become a global environmental challenge.
Declines in shellfish species on rocky seashores match climate-driven changes（图）
Declines shellfish species rocky seashores climate-driven changes
2020/10/30
The waters of the Gulf of Maine are warming faster than oceans almost anywhere on Earth. As the level of carbon dioxide rises in the atmosphere, it's absorbed by the sea, causing pH levels to fall. Oc...
Scientists develop numerical capability of laser-driven X-ray imaging（图）
Scientists numerical capability laser-driven X-ray imaging
2020/7/3
A team of scientists led by University of Nevada Reno physicist Hiroshi Sawada has demonstrated that numerical modeling accurately reproduces X-ray images using laser-produced X-rays.The ima...
Climate-driven megadrought is emerging in western US, study finds（图）
Climate-driven megadrought emerging western US
2020/5/9
With the western United States and northern Mexico suffering an ever-lengthening string of dry years, scientists have been warning that climate change may be pushing the region toward an extreme, long...
Driven by Earth's orbit, climate changes in Africa may have aided human migration（图）
Driven by Earth's orbit climate changes Africa may aided human migration
2020/2/20
In 1961, John Kutzbach, then a recent college graduate, was stationed in France as an aviation weather forecaster for the U.S. Air Force. There, he found himself exploring the storied caves of Dordogn...
2020 International Workshop on AI-Driven Social Innovation 在北京邮电大学成功召开（图）
2020 北京邮电大学 AI核心技术 智能医疗诊断 智能多媒体技术 智能渔业技术
2020/1/20
2020年1月13日，由北京邮电大学（BUPT），日本科学技术厅（JST）以及中国人工智能学会（CAAI）共同组织的 2020 International Workshop on AI-Driven Social Innovation在北邮成功召开。该研讨会旨在讨论如何建立AI核心技术，以智能、集成和安全的方式收集、处理、学习和控制现实世界产生的海量数据，并将这些结合在一起用以促进技术创新，从而有...
We identify and characterize a new class of fingering instabilities in liquid metals; these instabilities are unexpected due to the large interfacial tension of metals. Electrochemical oxidation lower...