Results 11 to 20 of about 1,376,682 (212)

Airborne LiDAR and Photogrammetric Point Cloud Fusion for Extraction of Urban Tree Metrics According to Street Network Segmentation

open access: yesIEEE Access, 2021
This paper provides a practical procedure for fusing LiDAR and photogrammetric point clouds for the extraction of tree metrics. Aerial photogrammetric point clouds are first generated using the structure-from-motion and dense-matching methods ...
Weijun Yang   +5 more
doaj   +1 more source

Research on hot air ice melt system for cable sheaths of Er’qi Yangtze River Bridge [PDF]

open access: yesE3S Web of Conferences, 2021
To prevent the cable sheaths of Er’qi Yangtze River Bridge from freezing under bad weather in winter, which may lead to ice fall and bring traffic safety accidents, a theoretical model and technical scheme of hot air ice melt system for Er’qi Yangtze ...
Liu Qianqian, Han yongtao, Fan xueliang
doaj   +1 more source

Spatial Distribution and Mechanism of Urban Occupation Mixture in Guangzhou: An Optimized GeoDetector-Based Index to Compare Individual and Interactive Effects

open access: yesISPRS International Journal of Geo-Information, 2021
Numerous studies have been devoted to uncovering the characteristics of resident density and urban mobility with multisource geospatial big data. However, little attention has been paid to the internal diversity of residents such as their occupations ...
Xingdong Deng   +5 more
doaj   +1 more source

Observed Equity and Driving Factors of Automated External Defibrillators: A Case Study Using WeChat Applet Data

open access: yesISPRS International Journal of Geo-Information, 2023
Out-of-hospital cardiac arrest (OHCA) causes a high mortality rate each year, which is a threat to human well-being and health. An automated external defibrillator (AED) is an effective device for heart attack-related diseases and is a panacea to save ...
Shunyi Liao   +5 more
doaj   +1 more source

Dynamic Nonlinear Analysis of an Irregular Office Building [PDF]

open access: yesE3S Web of Conferences, 2020
The common analysis methods of structural building include the response spectrum, static nonlinear analysis (pushover) and dynamic nonlinear analysis method.
Liu Haitao   +3 more
doaj   +1 more source

Survey of Labour and Income Dynamics, 1993-1994 [Canada]: Longitudinal Person File

open access: yes, 2023
The Survey of Labour and Income Dynamics (SLID) is a Statistics Canada survey intended for use in research on changes over time in Canadians labour force activity status and economic well-being.
Statistics Canada. Household Survey Division
core   +1 more source

Flow Characteristics in Plane S-type Axial Extended Tubular Pump

open access: yesGuan'gai paishui xuebao, 2023
【Objective】 The S-type axial extended tubular pump is a device widely used in various hydraulic engineering projects. The objective of this paper is to analyze the pressure pulsation characteristics and flow stability in the pump under different working ...
QUAN Li, LIU Ying, WU Zehao, YAN Jie
doaj   +1 more source

GIS Based Procedural Modeling in 3D Urban Design

open access: yesISPRS International Journal of Geo-Information, 2022
Traditional urban design is time-consuming and laborious. We propose a computer-generated architecture (CGA)-based workflow in this work, with the goal of allowing designers to take advantage of a high level of automation.
Ming Zhang   +4 more
doaj   +1 more source

Evaluation of the suitability of urban waterfront landscape recreation: A case study of the Changjiang waterfront in Yichang [PDF]

open access: yesE3S Web of Conferences
The shoreline resources in the middle and lower reaches of the Yangtze River are abundant and have great value for development and utilization. With the rapid development of the economy and society, the development and utilization of waterfront resources
Yuan Xiong   +4 more
doaj   +1 more source

Type selection, structural calculation and construction of anchorage in Sichuan bank of Sichuan Kahalo Jinsha River Bridge

open access: yesAdvances in Bridge Engineering, 2023
Sichuan kahalo Jinsha River Bridge is a suspension bridge with a main span of 1030 m, and the anchorages on both sides are gravity anchorages. In order to adapt to special terrain and geological conditions, anchorage of Sichuan bank pioneered the use of ...
Qiyu Tao, Qigang Xu, Li Chen, Rui Gu
doaj   +1 more source

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