Results 91 to 100 of about 7,545,238 (204)

Coherent atomic manipulation and cooling using composite optical pulse sequences

, 2014
The laser cooling of atoms to ultracold temperatures has propelled many groundbreaking advances in fundamental research and precision measurement, through such applications as quantum simulators and interferometric sensors. Laser cooling remains, however,
Dunning, Alexander
core   +1 more source

Turbulence-resistant high speed free-space optical communications using MUTC photodiodes

Results in Optics
In free-space optical (FSO) communication systems, atmospheric turbulence induces scintillation of received optical power. Higher transmission optical power can compensate turbulence-induced scintillation and other channel attenuation.
Beibei Cui, Shanyong Cai, Liqian Wang, Zhiguo Zhang   +3 more
doaj   +1 more source

Wavelength independent detection and discrimination of a laser with a sensitivity of 140fW using self-coherence

6 pages, 4 ...
Benton, David M., Ellis, Andrew, Li, Yiming   +2 more
openaire   +2 more sources

CCAI-YOLO: A High-Precision Synthetic Aperture Radar Ship Detection Model Based on YOLOv8n Algorithm

Remote Sensing
To tackle core challenges in detecting ship targets within synthetic aperture radar (SAR) images—including coherent speckle noise interference, complex background clutter, and multi-scale target distribution—this paper proposes a high-accuracy detection ...
Hui Liu, Haoyu Dong, Hongyin Shi, Fang Li   +3 more
doaj   +1 more source

On representing claims for coherent risk measures [PDF]

, 2007
We consider the problem of representing claims for coherent risk measures. For this purpose we introduce the concept of (weak and strong) time-consistency with respect to a portfolio of assets, generalizing the one defined in Delbaen [7]. In a similar
Berkaoui, Abdelkarem, Jacka, Saul D.
core  

TRACE: Time series representation learning with contrastive embeddings for anomaly detection in photovoltaic systems

Energy and AI
Reliable anomaly detection in photovoltaic (PV) inverters is critical for ensuring operational efficiency and reducing maintenance costs in renewable energy systems.
Chandana Priya Nivarthi, Zhixin Huang, Christian Gruhl, Bernhard Sick   +3 more
doaj   +1 more source

Optical carrier regeneration based on injection locking for single-sideband self-coherent detection

Optics Express
In this work, we demonstrate a low-cost electro-absorption modulated laser (EML)-based coherent receiver enabled by the injection locking technique in a 32-Gb/s single-sideband (SSB) transmission system. We focus on analyzing the harmonic components introduced by injection locking process when injecting an SSB signal into the EML-based coherent ...
Siyu Luo, Zhengxuan Li, Bingyao Cao, Lilin Yi, Yingxiong Song   +4 more
openaire   +1 more source

The relation of self-concept to desirable educational outcomes

, 2006
Reviewers (Byrne, 1996a, 1996b; Hattie, 1992; Marsh, Byrne, & Shavelson, 1988; Marsh & Craven, 1997; Craven, Marsh, & Burnett, 2003) consider that self-concept is multifaceted and espouse that self-concept cannot be adequately understood if its ...
Craven, Rhonda, Munns, Geoff, Ha, My Trinh, Martin, Andrew J.   +3 more
core  

Constellation Estimation, Coherent Signal Processing, and Multiperspective Imaging in an Uncoupled Bistatic Cooperative Radar Network

IEEE Journal of Microwaves
Cooperative radar networks are a promising technology in various areas, such as vehicle-to-infrastructure networks for automotive radar and radar remote sensing with UAVs. The use of widely distributed radar networks enables the detection of targets with
Patrick Fenske, Tobias Koegel, Roghayeh Ghasemi, Martin Vossiek   +3 more
doaj   +1 more source

Coherent Risk Measures and Upper Previsions [PDF]

In this paper coherent risk measures and other currently used risk measures, notably Value-at-Risk (VaR), are studied from the perspective of the theory of coherent imprecise previsions.
Renato Pelessoni, Paolo Vicig
core