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To mitigate climate change, the share of renewable needs to be increased. Renewable energies introduce new challenges to power grids due to decentralization, reduced inertia and volatility in production. The operation of sustainable power…

机器学习 · 计算机科学 2023-01-25 Christian Nauck , Michael Lindner , Konstantin Schürholt , Frank Hellmann

Two dimensional (2D) peak finding is a common practice in data analysis for physics experiments, which is typically achieved by computing the local derivatives. However, this method is inherently unstable when the local landscape is…

数据分析、统计与概率 · 物理学 2020-04-22 Han Peng , Xiang Gao , Yu He , Yiwei Li , Yuchen Ji , Chuhang Liu , Sandy A. Ekahana , Ding Pei , Zhongkai Liu , Zhixun Shen , Yulin Chen

The dynamics of droplet collisions in microchannels are inherently complex, governed by multiple interdependent physical and geometric factors. Understanding and predicting the outcomes of these collisions-whether coalescence, reverse-back,…

流体动力学 · 物理学 2024-11-12 SM Abdullah Al Mamun , Samaneh Farokhirad

Smart power grids are one of the most complex cyber-physical systems, delivering electricity from power generation stations to consumers. It is critically important to know exactly the current state of the system as well as its state…

系统与控制 · 电气工程与系统科学 2021-02-12 Shahrzad Hadayeghparast , Amir Namavar Jahromi , Hadis Karimipour

Graph neural networks (GNNs), especially dynamic GNNs, have become a research hotspot in spatio-temporal forecasting problems. While many dynamic graph construction methods have been developed, relatively few of them explore the causal…

机器学习 · 计算机科学 2023-05-18 Guojun Liang , Prayag Tiwari , Sławomir Nowaczyk , Stefan Byttner , Fernando Alonso-Fernandez

Recently, there has been a surge of research on data-driven weather forecasting systems, especially applications based on convolutional neural networks (CNNs). These are usually trained on atmospheric data represented on regular…

大气与海洋物理 · 物理学 2023-09-18 Sebastian Scher , Gabriele Messori

Current research in Computer Vision has shown that Convolutional Neural Networks (CNN) give state-of-the-art performance in many classification tasks and Computer Vision problems. The embedding of CNN, which is the internal representation…

计算机视觉与模式识别 · 计算机科学 2015-08-04 Axel Angel

The fast and accurate prediction of unsteady flow becomes a serious challenge in fluid dynamics, due to the high-dimensional and nonlinear characteristics. A novel hybrid deep neural network (DNN) architecture was designed to capture the…

流体动力学 · 物理学 2020-01-08 Renkun Han , Yixing Wang , Yang Zhang , Gang Chen

We present a method of constructing low-dimensional nonlinear models describing the main dynamical features of a discrete 2D cellular fault zone, with many degrees of freedom, embedded in a 3D elastic solid. A given fault system is…

地球物理 · 物理学 2009-11-10 Marian Anghel , Yehuda Ben-Zion , Ramiro Rico-Martinez

A model based on a convolutional neural network (CNN) is designed to reconstruct the three-dimensional turbulent flows beneath a free surface using surface measurements, including the surface elevation and surface velocity. Trained on…

流体动力学 · 物理学 2023-04-12 Anqing Xuan , Lian Shen

This paper presents a dedicated Deep Neural Network (DNN) architecture that reconstructs space-time traffic speeds on freeways given sparse data. The DNN is constructed in such a way, that it learns heterogeneous congestion patterns using a…

机器学习 · 计算机科学 2021-04-21 Felix Rempe , Philipp Franeck , Klaus Bogenberger

The synchronization of power generators is an important condition for the proper functioning of a power system, in which the fluctuations in frequency and the phase angle differences between the generators are sufficiently small when…

系统与控制 · 电气工程与系统科学 2023-08-21 Zhen Wang , Kaihua Xi , Aijie Cheng , Hai Xiang Lin , André C. M. Ran , Jan H. van Schuppen , Chenghui Zhang

Accurate power load forecasting is crucial for improving energy efficiency and ensuring power supply quality. Considering the power load forecasting problem involves not only dynamic factors like historical load variations but also static…

机器学习 · 计算机科学 2024-09-27 Chao Min , Yijia Wang , Bo Zhang , Xin Ma , Junyi Cui

We present an efficient deep learning technique for the model reduction of the Navier-Stokes equations for unsteady flow problems. The proposed technique relies on the Convolutional Neural Network (CNN) and the stochastic gradient descent…

流体动力学 · 物理学 2018-08-16 Tharindu P. Miyanawala , Rajeev K. Jaiman

We show that deep convolutional neural networks (CNN) can massively outperform traditional densely-connected neural networks (both deep or shallow) in predicting eigenvalue problems in mechanics. In this sense, we strike out in a new…

计算物理 · 物理学 2018-07-19 David Finol , Yan Lu , Vijay Mahadevan , Ankit Srivastava

Modern power systems with high penetration of inverter-based resources exhibit complex dynamic behaviors that challenge the scalability and generalizability of traditional stability assessment methods. This paper presents a dynamic…

系统与控制 · 电气工程与系统科学 2025-11-18 Guang An Ooi , Otavio Bertozzi , Mohd Asim Aftab , Charalambos Konstantinou , Shehab Ahmed

This work presents a novel Convolutional Neural Network (CNN) architecture and a training procedure to enable robust and accurate pose estimation of a noncooperative spacecraft. First, a new CNN architecture is introduced that has scored a…

计算机视觉与模式识别 · 计算机科学 2019-09-04 Tae Ha Park , Sumant Sharma , Simone D'Amico

Identifying the distribution of users' transportation modes is an essential part of travel demand analysis and transportation planning. With the advent of ubiquitous GPS-enabled devices (e.g., a smartphone), a cost-effective approach for…

机器学习 · 计算机科学 2018-04-10 Sina Dabiri , Kevin Heaslip

Convolutional neural networks (CNNs) learn filters in order to capture local correlation patterns in feature space. We propose to learn these filters as combinations of preset spectral filters defined by the Discrete Cosine Transform (DCT).…

计算机视觉与模式识别 · 计算机科学 2022-04-12 Matej Ulicny , Vladimir A. Krylov , Rozenn Dahyot

Convolutional neural networks (CNNs) have shown very promising performance in recent years for different problems, including object recognition, face recognition, medical image analysis, etc. However, generally the trained CNN models are…

计算机视觉与模式识别 · 计算机科学 2020-11-13 Roshan Reddy Yedla , Shiv Ram Dubey