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Nonlinear losses accompanying Kerr self-focusing substantially impacts the dynamic balance of diffraction and nonlinearity, permitting the existence of localized and stationary solutions of the 2D+1 nonlinear Schrodinger equation which are…

Spatio-temporal forecasting is an open research field whose interest is growing exponentially. In this work we focus on creating a complex deep neural framework for spatio-temporal traffic forecasting with comparatively very good…

机器学习 · 计算机科学 2020-10-22 Rodrigo de Medrano , José L. Aznarte

Single-impulse three-dimensional magnetic focusing of vertically launched cold atoms has been observed. Four different configurations of the lens were used to vary the relative radial and axial focusing properties. Compact focused clouds of…

原子物理 · 物理学 2008-06-10 David A. Smith , Aidan S. Arnold , Matthew J. Pritchard , Ifan G. Hughes

Many NLP tasks require processing long contexts beyond the length limit of pretrained models. In order to scale these models to longer text sequences, many efficient long-range attention variants have been proposed. Despite the abundance of…

计算与语言 · 计算机科学 2022-05-05 Wenhan Xiong , Barlas Oğuz , Anchit Gupta , Xilun Chen , Diana Liskovich , Omer Levy , Wen-tau Yih , Yashar Mehdad

Unlike conventional frame-based sensors, event-based visual sensors output information through spikes at a high temporal resolution. By only encoding changes in pixel intensity, they showcase a low-power consuming, low-latency approach to…

计算机视觉与模式识别 · 计算机科学 2019-03-19 Rohan Ghosh , Anupam Gupta , Siyi Tang , Alcimar Soares , Nitish Thakor

Experiments on the axial breathing mode in a rapidly rotating Bose-Einstein condensate are examined. Assuming a cold cloud without thermal component, we show that errors due to defocus of an imaging camera in addition to an inclination of…

介观与纳米尺度物理 · 物理学 2008-11-26 Gentaro Watanabe

This paper is concerned with devising the nonlinear optimal guidance for intercepting a stationary target with a fixed impact time. According to Pontryagin's Maximum Principle (PMP), some optimality conditions for the solutions of the…

最优化与控制 · 数学 2024-01-04 Kun Wang , Zheng Chen , Han Wang , Jun Li

Event-based camera has emerged as a promising paradigm for robot perception, offering advantages with high temporal resolution, high dynamic range, and robustness to motion blur. However, existing deep learning-based event processing…

计算机视觉与模式识别 · 计算机科学 2025-08-28 Shenqi Wang , Guangzhi Tang

We study the fundamental limit on the localization precision for a subwavelength scatterer embedded in a strongly scattering environment, using the external degrees of freedom provided by wavefront shaping. For a weakly scattering target,…

光学 · 物理学 2020-11-05 Dorian Bouchet , Rémi Carminati , Allard P. Mosk

In the context of wireless acoustic power transfer, high intensity focused ultrasound technology aims at the reduction of spreading losses by concentrating the acoustic energy at a specific location. Experiments are performed to determine…

应用物理 · 物理学 2020-06-24 Aarushi Bhargava , Vamsi C. Meesala , Muhammad R. Hajj , Shima Shahab

It is known that a spatially partially coherent light field produces better imaging contrast compared to a spatially coherent field and that the contrast increases as the spatial coherence length of the field becomes smaller. The transverse…

With the availability of thousands of type Ia supernovae in the near future the magnitude scatter induced by lensing will become a major issue as it affects parameter estimation. Current N-body simulations are too time consuming to be…

宇宙学与河外天体物理 · 物理学 2013-09-10 Valerio Marra , Miguel Quartin , Luca Amendola

Flow prediction (e.g., crowd flow, traffic flow) with features of spatial-temporal is increasingly investigated in AI research field. It is very challenging due to the complicated spatial dependencies between different locations and dynamic…

机器学习 · 计算机科学 2019-12-24 Haoxing Lin , Weijia Jia , Yiping Sun , Yongjian You

The requirement of axial magnetic field for focusing and transportation of sheet beam using cusped magnets is less as compared to solenoid magnetic fields which is uniform. There is often some confusion about how a cusped magnetic field…

加速器物理 · 物理学 2016-07-11 Tusharika S Banerjee , Arti Hadap , K. T. V. Reddy

Many existing autonomous driving paradigms involve a multi-stage discrete pipeline of tasks. To better predict the control signals and enhance user safety, an end-to-end approach that benefits from joint spatial-temporal feature learning is…

计算机视觉与模式识别 · 计算机科学 2022-07-19 Shengchao Hu , Li Chen , Penghao Wu , Hongyang Li , Junchi Yan , Dacheng Tao

Monitoring animal populations is crucial for assessing the health of ecosystems. Traditional methods, which require extensive fieldwork, are increasingly being supplemented by time-lapse camera-trap imagery combined with an automatic…

计算机视觉与模式识别 · 计算机科学 2024-12-24 Marcus Jenkins , Kirsty A. Franklin , Malcolm A. C. Nicoll , Nik C. Cole , Kevin Ruhomaun , Vikash Tatayah , Michal Mackiewicz

With reference to spatially non-local nematic liquid crystals, we develop a theory of optical spatial solitons and modulational instability in anisotropic media with arbitrarily large birefringence. Asymmetric spatial profiles and…

光学 · 物理学 2007-05-23 Claudio Conti , Marco Peccianti , Gaetano Assanto

By definition a spacetime is stably causal if it is possible to widen the light cones all over the spacetime without spoiling causality. We prove that if the spacetime is at least non-total imprisoning then it is stably causal provided the…

广义相对论与量子宇宙学 · 物理学 2009-08-12 E. Minguzzi , M. Rinaldelli

Long-range speckle correlations play an essential role in wave transport through disordered media, but have rarely been studied in other complex systems. Here we discover spatio-temporal intensity correlations for an optical pulse…

光学 · 物理学 2019-10-24 Wen Xiong , Chia Wei Hsu , Hui Cao

We employed caustic theory to analyze the propagation dynamics of partially coherent self-accelerating beams such as self-healing of partially coherent Airy beams. Our findings revealed that as the spatial coherence decreases, the…