Results 71 to 80 of about 3,564,546 (244)

Improving the Robustness of Visual Teach‐and‐Repeat Navigation Using Drift Error Correction and Event‐Based Vision for Low‐Light Environments

Advanced Robotics Research, EarlyView.
Visual teach‐and‐repeat (VTR) navigation allows robots to learn and follow routes without building a full metric map. We show that navigation accuracy for VTR can be improved by integrating a topological map with error‐drift correction based on stereo vision.
Fuhai Ling, Ze Huang, Tony J. Prescott
wiley   +1 more source

Virtual 3D Multi-Angle Modeling and Analysis of Nighttime Lighting in Complex Urban Scenes

Remote Sensing
Urban nighttime lighting extends human activity hours and enhances safety but also wastes energy and causes light pollution. Influenced by building obstructions and surface reflections, light emissions exhibit significant anisotropy.
Xueqian Gao, Yuehan Wang, Fan Yang, Ximin Cui, Xuesheng Zhao, Mengjun Chao, Xiaoling Wei, Jinke Liu, Guobin Shi, Hansi Yao, Qingqing Li, Wei Guo   +11 more
doaj   +1 more source

Force–Displacement Characterization of PNIPAM Microactuators

Advanced Robotics Research, EarlyView.
A method to experimentally establish a force–displacement diagram of poly(N‐isopropyl acrylamide) (PNIPAM) microactuators, printed by 2PP, is presented herein. PNIPAM is a hydrogel whose volume and stiffness change with temperature due to the absorption or release of water.
Manon Cassignol, Esra Yalcinkaya, Adam Chafaï, Jérémy Odent, Pierre Lambert   +4 more
wiley   +1 more source

Identification and Removal of Light Pollution in Maritime Night-Time Images Based on Spatial Frequency Blocks

Journal of Marine Science and Engineering
The safety of ships during nighttime navigation has always been a major concern. With the widespread application of technologies such as intelligent recognition, intelligent detection, and unmanned ship navigation at night, nighttime maritime light ...
Hui Sun, Jingyang Wang, Mingyang Pan, Zongying Liu, Shaoxi Li, Ruolan Zhang, Yang Wei   +6 more
doaj   +1 more source

Recent Advances in Laser‐Induced Graphene‐Based Gas Sensors: From Sensing Mechanisms to Biomedical Applications

Advanced Science, EarlyView.
Laser‐induced graphene (LIG) provides a scalable, laser‐direct‐written route to porous graphene architecture with tunable chemistry and defect density. Through heterojunction engineering, catalytic functionalization, and intrinsic self‐heating, LIG achieves highly sensitive and selective detection of NOX, NH3, H2, and humidity, supporting next ...
Md Abu Sayeed Biswas, Ankan Dutta, Shuvendu Das, Abu Musa Abdullah, Wanqing Zhang, Fatema Tuz Zohra, Huanyu Cheng   +6 more
wiley   +1 more source

The Value of Luminosity Data as a Proxy for Economic Statistics [PDF]

One of the pervasive issues in social and environmental research has been to improve the quality of socioeconomic data in developing countries. Because of the shortcoming of standard data sources, the present study examines luminosity (measures of ...
William D. Nordhaus, Xi Chen
core   +2 more sources

Global Nighttime Light Change from 1992 to 2017: Brighter and More Uniform

, 2020
Nighttime light images record the brightness of the Earth surface, indicating the scope and intensity of human activities. However, there are few studies on the long-term changes in global nighttime lights.
Yunfeng Hu, Yunzhi Zhang
core   +1 more source

Remote Magnetomechanical Neuromodulation Uncovers Therapeutic Mechanisms for Alleviating Parkinsonian Symptoms in Freely Moving Mice

Advanced Science, EarlyView.
Magnetomechanical neuromodulation using magnetic nanodiscs enables remote activation of neurons. In a hemiparkinsonian mouse model, alternating magnetic fields actuate the nanodiscs to generate torque that opens mechanosensitive ion channels within the subthalamic nucleus, thereby modulating basal ganglia motor circuitry.
Anouk Wolters, Lorenzo Signorelli, Christian Herff, Sophia Gimple, Renzo Riemens, Gunter Kenis, Kim Rijkers, Hamed Shabani, Jyh‐Jang Sun, Yasin Temel, Hans Clusmann, Danijela Gregurec, Sarah‐Anna Hescham   +12 more
wiley   +1 more source

Nighttime PM_2.5 Concentration Estimation Based on NPP-VIIRS and Interpretable Machine Learning: The Case of Beijing–Tianjin–Hebei Region

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Air pollution and public health issues caused by fine particulate matter (PM2.5) are becoming increasingly severe. Although well-established satellite methods exist for retrieving daytime PM2.5 concentrations, these methods are limited by weak nighttime ...
Tong Li, Bo Li, Zhihua Han, Wenhao Zhang, Xiufeng Yang   +4 more
doaj   +1 more source

Annual suburbs (2012–2020) extracted from SNPP–VIIRS nighttime light remotely sensed data

Annual suburbs (2012–2020) extracted from SNPP–VIIRS nighttime light remotely sensed ...
Shi Kaifang, Liu Shirao, Wu Yizhen
core   +1 more source