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Empirical Green's functions (EGFs) extracted from seismic ambient noise have been widely used to image Earth's interior structures, and the resolution of EGF-based tomography depends on the spatial density of seismic stations. However, due…

Geophysics · Physics 2026-01-12 Guoyi Chen , Junlun Li , Bao Deng

Millisecond focal plane telemetry is now becoming practical due to a new generation of near-IR detector arrays with sub-electron noise that are capable of kHz readout rates. Combining these data with those simultaneously available from the…

Instrumentation and Methods for Astrophysics · Physics 2016-11-23 Richard A. Frazin

Extracting Empirical Green's Functions (EGFs) by cross-correlating ambient seismic noise or coda, considered as an efficient approach of retrieving new response inside the media of two receivers, has been developed well in the past two…

Geophysics · Physics 2020-07-03 Xuping Feng

We employ Non-equilibrium Green's functions (NEGF) to describe the real-time dynamics of an adsorbate-surface model system exposed to ultrafast laser pulses. For a finite number of electronic orbitals, the system is solved exactly and…

Mesoscale and Nanoscale Physics · Physics 2016-05-04 E. Boström , M. Hopjan , A. Kartsev , C. Verdozzi , C. -O. Almbladh

We present an adjoint-based optimization method to invert for stress and frictional parameters used in earthquake modeling. The forward problem is linear elastodynamics with nonlinear rate-and-state frictional faults. The misfit functional…

Numerical Analysis · Mathematics 2024-09-10 Vidar Stiernström , Martin Almquist , Eric M. Dunham

Visual electrophysiology is often used clinically to determine functional changes associated with retinal or neurological conditions. The full-field flash electroretinogram (ERG) assesses the global contribution of the outer and inner…

Neurons and Cognition · Quantitative Biology 2024-10-03 Mikhail Kulyabin , Aleksei Zhdanov , Andreas Maier , Lynne Loh , Jose J. Estevez , Paul A. Constable

A Jacobian-free inversion method is presented to accelerate Electrical Resistivity Tomography (ERT) for shallow aquifer characterization. The ERT problem typically implements the adjoint state method to efficiently compute Jacobian during…

Geophysics · Physics 2022-02-02 Jonghyun Lee

Fast stereo based 3D object detectors have made great progress recently. However, they lag far behind high-precision stereo based methods in accuracy. We argue that the main reason is due to the poor geometry-aware feature representation in…

Computer Vision and Pattern Recognition · Computer Science 2022-04-27 Aqi Gao , Yanwei Pang , Jing Nie , Jiale Cao , Yishun Guo

The receiver-function (RF) technique aims to recover receiver-side crustal and mantle structures by deconvolving either the radial or transverse component with the vertical component seismogram. Analysis of the variations of RFs along the…

Geophysics · Physics 2025-09-01 T. Rengneichuong Koireng , Pawan Bharadwaj

3D reconstruction methods such as 3D Gaussian Splatting (3DGS) and Neural Radiance Fields (NeRF) achieve impressive photorealism but fail when input images suffer from severe motion blur. While event cameras provide high-temporal-resolution…

Computer Vision and Pattern Recognition · Computer Science 2026-05-11 Jun Dai , Renbiao Jin , Bo Xu , Yutian Chen , Linning Xu , Mulin Yu , Tianfan Xue , Shi Guo

We present an efficient implemention of a non-equilibrium Green function (NEGF) method for self-consistent calculations of electron transport and forces in nanostructured materials. The electronic structure is described at the level of…

Mesoscale and Nanoscale Physics · Physics 2015-06-04 Jingzhe Chen , Kristian S. Thygesen , Karsten W. Jacobsen

Optical variability is a key observational probe for studying the accretion dynamics and central engine physics of Active Galactic Nuclei (AGNs). The quality and completeness of light curves have a direct impact on variability studies,…

Astrophysics of Galaxies · Physics 2025-10-31 Jiaqi Lin , Zhen-Ya Zheng , Bin Ma , Lin Long , Yangfan Xie , Pu Lin , Ruqiu Lin , Xiang Ji

Electrocardiogram (ECG) analysis plays a crucial role in diagnosing cardiovascular diseases, but accurate interpretation of these complex signals remains challenging. This paper introduces a novel multimodal framework(GAF-FusionNet) for ECG…

Computer Vision and Pattern Recognition · Computer Science 2025-01-07 Jiahao Qin , Feng Liu

Remote sensing images captured from aerial perspectives often exhibit significant scale variations and complex backgrounds, posing challenges for salient object detection (SOD). Existing methods typically extract multi-level features at a…

Computer Vision and Pattern Recognition · Computer Science 2026-03-23 Bin Wan , Runmin Cong , Xiaofei Zhou , Hao Fang , Chengtao Lv , Sam Kwong

Real-time 3D reconstruction is a fundamental task in computer graphics. Recently, differentiable-rendering-based SLAM system has demonstrated significant potential, enabling photorealistic scene rendering through learnable scene…

Computer Vision and Pattern Recognition · Computer Science 2025-12-02 Xiaokun Pan , Zhenzhe Li , Zhichao Ye , Hongjia Zhai , Guofeng Zhang

Change detection in remote sensing imagery plays a vital role in various engineering applications, such as natural disaster monitoring, urban expansion tracking, and infrastructure management. Despite the remarkable progress of deep…

Computer Vision and Pattern Recognition · Computer Science 2025-08-08 Xiaoyang Zhang , Guodong Fan , Guang-Yong Chen , Zhen Hua , Jinjiang Li , Min Gan , C. L. Philip Chen

Current saliency methods require to learn large scale regional features using small convolutional kernels, which is not possible with a simple feed-forward network. Some methods solve this problem by using segmentation into superpixels…

Computer Vision and Pattern Recognition · Computer Science 2020-01-22 Dominique Beaini , Sofiane Achiche , Alexandre Duperré , Maxime Raison

Directional wave speeds variations in anisotropic elastic solids enables material characterisation capabilities, such as determination of elastic constants and volumetric measurement of crystallographic texture. However, achieving such…

Applied Physics · Physics 2024-08-19 Melody Png , Ming Huang , Marzieh Bahreman , Christopher M. Kube , Michael J. S. Lowe , Bo Lan

We report results from the Eddy Experiment, where a synchronous GPS receiver pair was flown on an aircraft to collect sampled L1 signals and their reflections from the sea surface to investigate the altimetric accuracy of GNSS-R. During the…

Atmospheric and Oceanic Physics · Physics 2007-05-23 G. Ruffini , F. Soulat , M. Caparrini , O. Germain , M. Martin-Neira

Accurate segmentation of myocardial scar from late gadolinium enhanced (LGE) cardiac MRI is essential for evaluating tissue viability, yet remains challenging due to variable contrast and imaging artifacts. Electrocardiogram (ECG) signals…

Computer Vision and Pattern Recognition · Computer Science 2026-04-02 Farheen Ramzan , Yusuf Kiberu , Nikesh Jathanna , Meryem Jabrane , Vicente Grau , Shahnaz Jamil-Copley , Richard H. Clayton , Chen , Chen
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