Results 91 to 100 of about 28,978 (207)

Quantum Chemistry Investigation of Linear and Nonlinear (chir)optical Properties of Oligoamide Foldamers

ChemistryEurope, Volume 4, Issue 4, April 2026.
The linear and nonlinear (chir)optical properties of four oligoamide foldamers with different donor groups are studied by means of time‐dependent density functional theory calculations. It is shown that stronger donors yield larger hyperpolarizabilities due to low‐lying charge–transfer states. The agreement with the experiments concerning the key bands
Komlanvi Sèvi Kaka, Andrea Bonvicini, Yann Ferrand, Céline Olivier, Vincent Rodriguez, Benoît Champagne   +5 more
wiley   +1 more source

NLO photon parton parametrization

, 2005
An NLO photon parton parametrization is presented based on the existing $F_2^ $ measurements from $e^+e^-$ data and the low-$x$ proton structure function from $ep$ interactions. Also included in the extraction of the NLO parton distribution functions are the dijets data coming from $ p \to j_1 + j_2 +X$.
Abramowicz, Halina, Levy, Aharon, Slominski, Wojtek   +2 more
openaire   +2 more sources

Multipath-Assisted Ultra-Wideband Vehicle Localization in Underground Parking Environment Using Ray-Tracing

Sensors
In complex underground parking scenarios, non-line-of-sight (NLOS) obstructions significantly impede positioning signals, presenting substantial challenges for accurate vehicle localization.
Shuo Hu, Lixin Guo, Zhongyu Liu, Shuaishuai Gao   +3 more
doaj   +1 more source

Analysis of Machine Learning-Based NLOS Signal Identification Algorithm for UWB Indoor Localization Using CIR Waveform Features [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Ultra-wideband (UWB) technology stands out among numerous indoor positioning techniques due to its high operating frequency, low interception capability, resistance to multipath effects, and strong penetration.
K. Wang, C. Yang
doaj   +1 more source

RM-CSTV: An effective high-resolution method of non-line-of-sight millimeter-wave radar 3-D imaging

National Science Open
Non-line-of-sight (NLOS) imaging is a novel radar sensing technology that enables the reconstruction of hidden targets. However, it may suffer from synthetic aperture length reduction caused by ambient occlusion. In this study, a complex total variation (
Liu Xinyuan, Wei Shunjun, Pu Wei, Cai Xiang, Wen Yanbo, Guo Shisheng, Kong Lingjiang   +6 more
doaj   +1 more source

A Post-Processing Multipath/NLoS Bias Estimation Method Based on DBSCAN

Sensors
Positioning based on Global Navigation Satellite Systems (GNSSs) in urban environments always suffers from multipath and Non-Line-of-Sight (NLoS) effects. In such conditions, the GNSS pseudorange measurements can be affected by biases disrupting the GNSS-
Yihan Guo, Simone Zocca, Paolo Dabove, Fabio Dovis   +3 more
doaj   +1 more source

Method 2 at NLO

, 2004
This note describes a theoretical study of Wbb and Wjj final states at the Tevatron using the NLO program MCFM. We extensively study the effect of NLO corrections with respect to variations of input parameters such as the minimum jet p_T and the choice of renormalization and factorization scales.
Campbell, J., Huston, J.
openaire   +2 more sources

Indoor Mobile Localization in Wireless Sensor Network under Unknown NLOS Errors

International Journal of Distributed Sensor Networks, 2013
Localization is one of the key techniques in wireless sensor network. One of the main problems in indoor mobile localization is non-line-of-sight (NLOS) propagation. And the NLOS effects will lead to a large localization error. So the NLOS problem is the
Long Cheng, Hao Wu, Chengdong Wu, Yunzhou Zhang   +3 more
doaj   +1 more source

An NLOS Ranging Error Mitigation Method for 5G Positioning in Indoor Environments

Applied Sciences
Positioning based on wireless signals such as mobile communication networks has become an important means to provide high-precision location services in environments where satellite signals are blocked.
Jingrong Liu, Zhongliang Deng, Enwen Hu
doaj   +1 more source

Link Gain and Pulse Width Broadening Evaluation of Non-Line-of-Sight Optical Wireless Scattering Communication Over Broad Spectra

IEEE Photonics Journal, 2017
In addition to large path loss, non-line-of-sight (NLOS) optical wireless scattering communication suffers time dispersion due to the multipath nature of the NLOS scattering channel.
Yu Sun, Chen Gong, Zhengyuan Xu, Yafeng Zhan   +3 more
doaj   +1 more source