Results 41 to 50 of about 46,780 (128)

Measuring the similarity between shapes of buildings using graph edit distance

International Journal of Digital Earth
Building data play a crucial role in geographic information science, and building shape similarity can be used for spatial inquiry, cartographic generalization, map updating, data quality assessment, and other spatial data mining applications.
Xiechun Lu, Houpu Li, Yongyang Xu, Jiangwen Liu, Zhanlong Chen   +4 more
doaj   +1 more source

Integrating Sentinel-1 and 2 with LiDAR data to estimate aboveground biomass of subtropical forests in northeast Guangdong, China

International Journal of Digital Earth, 2023
Accurate monitoring of forest aboveground biomass (AGB) is vital for sustainable forest management. Generally, the AGB is estimated by combining satellite images and field measurements.
Linjing Zhang, Xiaoxue Zhang, Zhenfeng Shao, Wenhao Jiang, Huimin Gao   +4 more
doaj   +1 more source

How sustainable is OpenStreetMap? Tracking individual trajectories of editing behavior

International Journal of Digital Earth
OpenStreetMap (OSM) has been playing increasingly important roles in location-based services, urban planning, tourism, and disaster management. In this paper, we examine a fundamental issue: can OSM reliably provide its services in the long run?
Xiang Zhang, Jiayan An, Yuchuan Zhou, Min Yang, Xi Zhao   +4 more
doaj   +1 more source

Virtual earth cloud: a multi-cloud framework for enabling geosciences digital ecosystems

International Journal of Digital Earth, 2023
Humankind is facing unprecedented global environmental and social challenges in terms of food, water and energy security, resilience to natural hazards, etc.
Mattia Santoro, Paolo Mazzetti, Stefano Nativi   +2 more
doaj   +1 more source

Nonmagnetic compensation in ferromagnetic Ga1-xMnxAs and Ga1-xMnxP synthesized by ion implantation and pulsed-laser melting [PDF]

, 2008
journal articleThe electronic and magnetic effects of intentional compensation with nonmagnetic donors are investigated in the ferromagnetic semiconductors Ga1−xMnxAs and Ga1−xMnxP synthesized using ion implantation and pulsed-laser melting.
Scarpulla, Michael, Stone, P. R.; Sharp, I. D.; Haller, E. E.; Dubon, O. D.; Beeman, J. W.; Yu, K. M.   +1 more
core   +4 more sources

CG-CFPANet: a multi-task network for built-up area extraction from SDGSAT-1 and Sentinel-2 remote sensing images

International Journal of Digital Earth
Accurate extraction of built-up areas is helpful to urban development and map updating. Nighttime light (NTL) data can capture the lighting signal of ground objects.
Lei Wang, Cheng Ye, Fang Chen, Ning Wang, Congrong Li, Haiying Zhang, Yu Wang, Bo Yu   +7 more
doaj   +1 more source

A point cloud segmentation method for power lines and towers based on a combination of multiscale density features and point-based deep learning

International Journal of Digital Earth, 2023
The point segmentation of power lines and towers aims to use unmanned aerial vehicles (UAVs) for the inspection of power facilities, risk detection and modelling.
Wenbo Zhao, Qing Dong, Zhengli Zuo
doaj   +1 more source

The 1776 Report

, 2021
In response to "The 1619 Project", President Donald Trump established a commission to “'enable a rising generation to understand the history and principles of the founding of the United States in 1776 and to strive to form a more perfect Union.'” This ...
The President’s Advisory 1776 Commission
core   +1 more source

Evaluation of impervious surface extraction based on Qimingxing-1 nighttime light and point of interest data

International Journal of Digital Earth
Impervious surface extraction is essential for environmental management and urban studies. Although nighttime light data have been widely used for this purpose, few studies have utilized the high-resolution (21 m) Qimingxing-1 data released in 2022 ...
Suixuan Qiu, Zejia Chen, Huishan Luo, Jinyao Lin, Siyan Lu, Xinchang Zhang   +5 more
doaj   +1 more source

A new vegetation index combination for leaf carotenoid-to-chlorophyll ratio: minimizing the effect of their correlation

International Journal of Digital Earth, 2023
The ratio of leaf carotenoid to chlorophyll (Car/Chl) is an indicator of vegetation photosynthesis, development and responses to stress. However, the correlation between Car and Chl, and their overlapping absorption in the visible spectral domain pose a ...
Chunmei He, Jia Sun, Yuwen Chen, Lunche Wang, Shuo Shi, Feng Qiu, Shaoqiang Wang, Torbern Tagesson   +7 more
doaj   +1 more source