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Water-filling solutions play an important role in the designs for wireless communications, e.g., transmit covariance matrix design. A traditional physical understanding is to use the analogy of pouring water over a pool with fluctuating…

信息论 · 计算机科学 2020-01-16 Chengwen Xing , Yindi Jing , Shuai Wang , Shaodan Ma , H. Vincent Poor

Simulating water droplets made up of millions of molecules and on timescales as needed in biological and technological applications is challenging due to the difficulty of balancing accuracy with computational capabilities. Most detailed…

统计力学 · 物理学 2025-05-12 Luis Enrique Coronas , Oriol Vilanova , Giancarlo Franzese

The work addresses the issue of precision measurement of the concentration of molecular gas components in the atmosphere and their isotopic composition. The primary focus is investigating the composition of gas mixtures and determining the…

化学物理 · 物理学 2025-02-03 Viacheslav Meshcherinov

Upcoming LCLS-II/II-HE operation at repetition rates approaching 1MHz demands on-detector data reduction to manage the resulting data volumes. We present a 2D discrete wavelet transform (DWT) pre-processing algorithm that segments…

This work developed an accurate and robust absorption-based method for spatially resolved measurements of gas temperatures in flames and reacting flows, with typical single-measurement uncertainties on the order of 1\%. This method exploits…

光学 · 物理学 2025-10-17 Shuoxun Zhang , Shengkai Wang

Ultrafast-optical-pump -- structural-probe measurements, including ultrafast electron and x-ray scattering, provide direct experimental access to the fundamental timescales of atomic motion, and are thus foundational techniques for studying…

In contrast to the abundance of work on the anomalous behavior of water, the relationship between the water's thermodynamic anomalies and kinetics of phase transition from metastable water is relatively unexplored. In this work, we have…

软凝聚态物质 · 物理学 2022-12-15 Yuvraj Singh , Mantu Santra , Rakesh S. Singh

This technical note is on digital filters for the high-fidelity estimation of a sinusoidal signal's frequency in the presence of additive noise. The complex noise is assumed to be white (i.e. uncorrelated) however it need not be Gaussian.…

信号处理 · 电气工程与系统科学 2023-08-15 Hugh Lachlan Kennedy

We present a new cavity-based polarimetric scheme for highly sensitive and time-resolved measurements of birefringence and dichroism, linear and circular, that employs rapidly-pulsed single-frequency CW laser sources and extends current…

化学物理 · 物理学 2020-05-20 Jim C. Visschers , Oleg Tretiak , Dmitry Budker , Lykourgos Bougas

Spectral CT offers enhanced material discrimination over single-energy systems and enables quantitative estimation of basis material density images. Water/iodine decomposition in contrast-enhanced CT is one of the most widespread…

医学物理 · 物理学 2021-03-30 Matthew Tivnan , Grace Gang , Wenchao Cao , Nadav Shapira , Peter B. Noel , J. Webster Stayman

The fluid antenna system (FAS) concept is an emerging paradigm that promotes the utilization of the feature of shape and position reconfigurability in antennas to broaden the design of wireless communication systems. This also means that…

信息论 · 计算机科学 2025-09-11 Xusheng Zhu , Kai-Kit Wong , Hao Xu , Han Xiao , Hanjiang Hong , Hyundong Shin , Yangyang Zhang

Purpose: Dynamic glucose enhanced (DGE) MRI studies employ chemical exchange saturation transfer (CEST) or spin lock (CESL) to study glucose uptake. Currently, these methods are hampered by low effect size and sensitivity to motion. To…

We propose a unified diffusion model-based correction and super-resolution method to enhance the fidelity and resolution of diverse low-quality data through a two-step pipeline. First, the correction step employs a novel enhanced stochastic…

数值分析 · 数学 2025-05-15 Wuzhe Xu , Yulong Lu , Sifan Wang , Tong-Rui Liu

Ongoing advancements in computer vision, particularly in pattern recognition and scene classification, have enabled new applications in environmental monitoring. Deep learning now offers non-contact methods for assessing water quality and…

计算机视觉与模式识别 · 计算机科学 2025-09-04 Shubham Laxmikant Deshmukh , Matthew Wilchek , Feras A. Batarseh

X-ray absorption spectroscopy (XAS) is a powerful experimental tool to probe the local structure in materials with the core hole excitations. Here, the oxygen K-edge XAS spectra of the NaCl solution and pure water are computed by using a…

材料科学 · 物理学 2023-11-03 Fujie Tang , Kefeng Shi , Xifan Wu

Light Detection and Ranging (LiDAR) are fast emerging sensors in the field of Earth Observation. It is a remote sensing technology that utilizes laser beams to measure distances and create detailed three-dimensional representations of…

信号处理 · 电气工程与系统科学 2025-04-15 Saad Ahmed Jamal

A straightforward and computationally efficient Consecutive Cubic Spline (CCS) iterative algorithm is proposed for positioning the planar interface of the unstructured geometrical Volume-of-Fluid method in arbitrarily-shaped cells. The CCS…

计算物理 · 物理学 2025-01-08 Tomislav Maric

In this paper, we consider the filtering problem for partially observed diffusions, which are regularly observed at discrete times. We are concerned with the case when one must resort to time-discretization of the diffusion process if the…

数值分析 · 数学 2020-04-09 Marco Ballesio , Ajay Jasra , Erik von Schwerin , Raul Tempone

Diffuse speckle contrast analysis (DSCA), also called speckle contrast optical spectroscopy(SCOS), has emerged as a groundbreaking optical imaging technique for tracking dynamic biological processes, including blood flow and tissue…

Water pollution is a critical issue that can affects humans' health and the entire ecosystem thus inducing economical and social concerns. In this paper, we focus on an Internet of Things water quality prediction system, namely WaterS, that…

网络与互联网体系结构 · 计算机科学 2021-11-25 Pietro Boccadoro , Vitanio Daniele , Pietro Di Gennaro , Domenico Lofù , Pietro Tedeschi