Results 21 to 30 of about 170,925 (120)

Efficient 2D adaptive beamforming algorithm based on sparse array optimisation

The Journal of Engineering, 2019
In this study, a 2D adaptive beamforming algorithm for sparse array is proposed. Firstly, a signal model based on matrix completion theory for adaptive beamforming in sparse array is established, which is proved to satisfy null space property.
Chaoyu Wang, Can Zhu, Chunlin Chen, Hongtao Li   +3 more
doaj   +1 more source

Renovation of Traditional Residential Buildings in Lijiang Based on AHP-QFD Methodology: A Case Study of the Wenzhi Village

Buildings, 2023
The rapid growth of tourism has led to the transformation of numerous traditional dwellings in Yunnan into commercial lodgings, presenting a challenge to the preservation and inheritance of traditional culture.
Junjie Li, Xiangbin Peng, Chen Li, Qiong Luo, Suna Peng, Huanchen Tang, Ruomei Tang   +6 more
doaj   +1 more source

Modular and Prefabricated System for Waterproofing and Insulation of Flat Roofs

Buildings, 2023
Recently, there has been an attempt to implement increasingly significant prefabrication in building construction, since this method is considered to represent an opportunity to reduce impacts in the construction sector.
Patrícia Fernandes Rocha, Nuno Oliveira Ferreira, Dóris Queiroz, Nelson Bento Pereira   +3 more
doaj   +1 more source

Design of library intelligent lighting system based on deep learning

Scientific Reports
Aiming at the problems of low intelligence and energy waste in the current university library lighting system, this paper designs an intelligent lighting solution based on sub-area autonomy control.
Hong Wang, Yingjie Sheng, Yang Guo, Zengrui Tian, Pan Chu, Mengyao Chen, Hao Li   +6 more
doaj   +1 more source

A 3D LiDAR-Inertial Tightly-Coupled SLAM for Mobile Robots on Indoor Environment

IEEE Access
Indoor environments are considered challenging due to their perceived degradation. This is attributed to both the homogeneity of indoor scene structures and the scarcity of feature points, particularly in long corridor environments.
Sen Li, Rui He, He Guan, Yuanrui Shen, Xiaofei Ma, Hezhao Liu   +5 more
doaj   +1 more source

The research on infrared radiation affected by smoke or fog in different environmental temperatures

Scientific Reports
Infrared thermal imaging camera as a non-contact monitoring of the object to be measured is widely used in fire detection, driving assistance and so on. Although there are many related studies, there is a lack of research on the influence of fog or smoke
Huaizhou Li, Shupei Wen, Sen Li, Hong Wang, Xin Geng, Shuaijun Wang, Jinlong Zhai, Wenhua Zhang   +7 more
doaj   +1 more source

YOLOFM: an improved fire and smoke object detection algorithm based on YOLOv5n

Scientific Reports
To address the current difficulties in fire detection algorithms, including inadequate feature extraction, excessive computational complexity, limited deployment on devices with limited resources, missed detections, inaccurate detections, and low ...
Xin Geng, Yixuan Su, Xianghong Cao, Huaizhou Li, Linggong Liu   +4 more
doaj   +1 more source

Preliminary Study on Reconstruction of Building Thermal Field Based on Iterative Algorithm Acoustic CT

Fire, 2023
Real-time acquisition and visualization of temperature anomalies in building spaces and 3D temperature field data during fires are of vital importance for fire danger warnings, early rescue operations, evacuation commands, and subsequent fire accident ...
Hengjie Qin, Jiangqi Wen, Zihe Gao, Lingling Chai, Haowei Yao   +4 more
doaj   +1 more source

Study on the variation law of smoke layer thickness with ceiling structure height in long-narrow space with one end opening

Scientific Reports
The ceiling structure in a long-narrow space has a significant impact on the thickness of the fire smoke layer. This paper mainly studies the influence of the height of the ceiling structure on the thickness of the smoke layer before the ceiling ...
Zeqi Wu, Kunpeng Liu, Jinyi Yang, Lin Shao, Hengjie Qin, Xiaoge Wei   +5 more
doaj   +1 more source

WTI-SLAM: a novel thermal infrared visual SLAM algorithm for weak texture thermal infrared images

Complex & Intelligent Systems
This study addresses the challenges of robotic localization and navigation in visually degraded environments, such as low illumination and adverse weather conditions, by proposing a novel thermal infrared visual SLAM (Simultaneous Localization and ...
Sen Li, Xiaofei Ma, Rui He, Yuanrui Shen, He Guan, Hezhao Liu, Fei Li   +6 more
doaj   +1 more source