Results 21 to 30 of about 334,339 (267)

Quantitative estimates of collective geo-tagged human activities in response to typhoon Hato using location-aware big data

open access: yesInternational Journal of Digital Earth, 2020
Location-aware big data from social media have been widely used to quantitatively characterize natural disasters and disaster-induced losses. It is not clear how human activities collectively respond to a disaster.
Zhang Liu   +5 more
doaj   +1 more source

Research progress and prospects of coal mine intelligent geological guarantee systems

open access: yesMeitan kexue jishu, 2023
The intelligent geological guarantee system is an important part of coal mines IT construction. The article first reviews the history of geological information technology at home and abroad from the respect of geological exploration equipment, geological
LI Mei, MAO Shanjun, ZHAO Mingjun
doaj   +1 more source

Hybrid Watermarking Algorithm Using Clifford Algebra With Arnold Scrambling and Chaotic Encryption

open access: yesIEEE Access, 2020
With the widespread use of color images, the copyright protection of those images using watermarks is one of the latest research topics. The use of color images as watermarks has advantages over binary and irreplaceable grayscale images. Color images are
Uzair Aslam Bhatti   +6 more
doaj   +1 more source

Risk factors and predicted distribution of visceral leishmaniasis in the Xinjiang Uygur Autonomous Region, China, 2005–2015

open access: yesParasites & Vectors, 2019
Background Visceral leishmaniasis (VL) is a neglected disease that is spread to humans by the bites of infected female phlebotomine sand flies. Although this vector-borne disease has been eliminated in most parts of China, it still poses a significant ...
Fangyu Ding   +7 more
doaj   +1 more source

A New Approach to Measuring the Similarity of Indoor Semantic Trajectories

open access: yesISPRS International Journal of Geo-Information, 2021
People spend more than 80% of their time in indoor spaces, such as shopping malls and office buildings. Indoor trajectories collected by indoor positioning devices, such as WiFi and Bluetooth devices, can reflect human movement behaviors in indoor spaces.
Jin Zhu   +5 more
doaj   +1 more source

GEOGRAPHIC INFORMATION SYSTEM – TOBEL [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
Abstract. TOBEL is Geographic Information System entirely developed by one of the leading Bulgarian Geo-information companies – "Mapex" JSC. The system is based on modern information technology and it is especially designed for Bulgarian authorities. GIS – TOBEL provides to municipalities extraordinary quantitative and qualitative benefits.
openaire   +4 more sources

Classification in Geographical Information Systems [PDF]

open access: yes, 2004
The paper deals with the problem of knowledge discovery in spatial databases. In particular, we explore the application of decision tree learning methods to the classification of spatial datasets. Spatial datasets, according to the Geographic Information System approach, are represented as stack of layers, where each layer is associated with an ...
RINZIVILLO S, TURINI, FRANCO
openaire   +3 more sources

Addressing Semantic Geographic Information Systems [PDF]

open access: yesFuture Internet, 2013
The progressive consolidation of information technologies on a large scale has been facilitating and progressively increasing the production, collection, and diffusion of geographic data, as well as facilitating the integration of a large amount of external information into geographic information systems (GIS).
Salvatore F. Pileggi, Robert Amor
openaire   +5 more sources

Estimating Rainfall Interception of Vegetation Canopy from MODIS Imageries in Southern China

open access: yesRemote Sensing, 2019
The interception of rainfall by vegetation canopies plays an important role in the hydrologic process of ecosystems. Most estimates of canopy rainfall interception in present studies are mainly through field observations at the plot region.
Jianping Wu   +10 more
doaj   +1 more source

Pollution exacerbates China’s water scarcity and its regional inequality

open access: yesNature Communications, 2020
The impact on inadequate water quality on water scarcity is unclear. Here the authors quantify China’s present-day water scarcity and show that inadequate water quality exacerbates China’s water scarcity, which is unevenly distributed across the country.
Ting Ma   +13 more
doaj   +1 more source

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