Results 31 to 40 of about 171,523 (302)

A Quaternion-Based Piecewise 3D Modeling Method for Indoor Path Networks

open access: yesISPRS International Journal of Geo-Information, 2019
Generating 3D path models (with textures) from indoor paths is a good way to improve the visualization performance of 3D indoor path analysis. In this paper, a quaternion-based piecewise 3D modeling method is proposed to automatically generate highly ...
Hongdeng Jian   +4 more
doaj   +1 more source

An Endmember Extraction Method Based on Artificial Bee Colony Algorithms for Hyperspectral Remote Sensing Images

open access: yesRemote Sensing, 2015
Mixed pixels are common in hyperspectral remote sensing images. Endmember extraction is a key step in spectral unmixing. The linear spectral mixture model (LSMM) constitutes a geometric approach that is commonly used for this purpose.
Xu Sun   +4 more
doaj   +1 more source

Digital Earth: Big Earth Data

open access: yesInternational Journal of Digital Earth, 2014
Human beings have entered the age of ‘big data’. From 2005 to 2020, the digital universe is expected to grow by a factor of 300, from 130 exabytes to 40,000 exabytes, or 40 trillion gigabytes.
openaire   +1 more source

Innovation in geoprocessing for a Digital Earth [PDF]

open access: yesInternational Journal of Digital Earth, 2017
Online geoprocessing, the provision and the use of spatial analysis functionality on the Web, is a powerful technological approach to fully realise the vision of a Digital Earth.
Barbara Hofer   +2 more
openaire   +3 more sources

Upscaling Solar-Induced Chlorophyll Fluorescence from an Instantaneous to Daily Scale Gives an Improved Estimation of the Gross Primary Productivity

open access: yesRemote Sensing, 2018
Solar-induced chlorophyll fluorescence (SIF) is closely linked to the photosynthesis of plants and has the potential to estimate gross primary production (GPP) at different temporal and spatial scales.
Jiaochan Hu   +4 more
doaj   +1 more source

The future of Digital Earth

open access: yesAnnals of GIS, 2012
The concept of Digital Earth as a digital replica of the planet has its roots in science fiction, in the writings of environmental visionaries, and in a speech prepared for delivery by Vice President Gore in 1998. Five use cases are identified that together comprise the vision of Digital Earth: a geoportal, a visualization service, a platform for ...
openaire   +1 more source

Extraction of Glacial Lake Outlines in Tibet Plateau Using Landsat 8 Imagery and Google Earth Engine

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2017
Glacial lake outburst floods (GLOFs) are among the most serious natural hazards in high mountain regions in the last several decades. The recent global warming has caused dramatic glacial lake changes and increased potential GLOF risk, particularly in ...
Fang Chen   +3 more
doaj   +1 more source

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

open access: yesFEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source

Accuracy evaluation and comparison of GPM and TRMM precipitation product over Mainland China

open access: yesShui kexue jinzhan, 2018
For evaluating the accuracy of the remotely sensed precipitation products of Tropical Rainfall Measuring Mission 3B42 (TRMM) and latest-generation Global Precipitation Measurement IMERG (GPM), four commonly used error metrics (R, ERMS, EMA and ER) and ...
LI Qilun   +4 more
doaj   +1 more source

Digital Earth – A sustainable Earth

open access: yesIOP Conference Series: Earth and Environmental Science, 2014
All life, particularly human, cannot be sustainable, unless complimented with shelter, poverty reduction, provision of basic infrastructure and services, equal opportunities and social justice. Yet, in the context of cities, it is believed that they can accommodate more and more people, endlessly, regardless to their carrying capacity and increasing ...
openaire   +1 more source

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