Results 21 to 30 of about 881,069 (299)

A New Strategy for Extracting 3D Deformation of Mining Areas from a Single-Geometry Synthetic Aperture Radar Dataset

Remote Sensing, 2023
This paper presents a strategy for extracting three-dimensional (3D) mining deformation from a single-geometry synthetic aperture radar (SAR) dataset.
Ruonan Zhao, Zhabko Andrey Viktorovich, Junfeng Li, Chuang Chen, Meinan Zheng   +4 more
doaj   +1 more source

Research on evaluation model of comprehensive condition for mine-used hydraulic support

Gong-kuang zidonghua, 2019
In view of problem that existing hydraulic support monitoring system had not realized comprehensive monitoring and evaluation of conditions of hydraulic support, evaluation model of comprehensive condition for hydraulic support was established.Through ...
HOU Gang
doaj   +1 more source

Retrieving Three-Dimensional Large Surface Displacements in Coal Mining Areas by Combining SAR Pixel Offset Measurements with an Improved Mining Subsidence Model

Remote Sensing, 2021
Interferometric synthetic aperture radar (InSAR) technology can obtain one-dimensional surface displacements in the radar line of sight (LOS). In the field of mining subsidence, large 3D movements often occur at the same time, and hence InSAR derived one-
Bingqian Chen, Han Mei, Zhenhong Li, Zhengshuai Wang, Yang Yu, Hao Yu   +5 more
doaj   +1 more source

Experimental Research of Compound Monitoring on Multiple Temporary Blocking Refracturing for Long-Section Horizontal Wells

Frontiers in Earth Science, 2022
As an important energy replacement block in China, the tight conglomerate oilfields in the Mahu area are difficult to develop and are characterized by strong heterogeneity, large horizontal stress differences, and undeveloped natural fractures.
Jingchen Zhang, Baocheng Wu, Fei Wang, Shanzhi Shi, Jinjun Liu, Mingxing Wang, Jie Li, Nicholas Izuchukwu Osuji   +7 more
doaj   +1 more source

The specification and testing of a horizontal axis tidal turbine rotor monitoring approach. [PDF]

, 2018
The sustainable deployment of Horizontal Axis Tidal Turbines will require effective management and maintenance functions. In part, these can be supported by the engineering of suitable condition monitoring systems.
Allmark, Matthew, Frost, Carwyn, Grosvenor, Roger, Prickett, Paul   +3 more
core   +4 more sources

Selection of the key earth observation sensors and platforms focusing on applications for Polar Regions in the scope of Copernicus system 2020-2030 [PDF]

, 2019
An optimal payload selection conducted in the frame of the H2020 ONION project (id 687490) is presented based on the ability to cover the observation needs of the Copernicus system in the time period 2020–2030.
Camps Carmona, Adriano José, Cote, Judith, Hyuk, Park, Lancheros Sepulveda, Estefany Maria, Pierotti, Stéphane, Rodríguez, Pedro, Tonetti, Stefania   +6 more
core   +2 more sources

Evaluation of the performance of four chemical transport models in predicting the aerosol chemical composition in Europe in 2005 [PDF]

, 2016
© Author(s) 2016.Four regional chemistry transport models were applied to simulate the concentration and composition of particulate matter (PM) in Europe for 2005 with horizontal resolution 20 km.
Butler, Tim, Denier van der Gon, Hugo, Friedrich, Rainer, Hendricks, Johannes, Hendriks, Carlijn, Kong, Xin, Kukkonen, Jaakko, Lawrence, Mark, Prank, Marje, Righi, Mattia, Samaras, Zissis, Sausen, Robert, Semeena, Valiyaveetil, Sofiev, Mikhail, Sokhi, Ranjeet, Tsyro, Svetlana, Vazhappilly Francis, Xavier   +16 more
core   +3 more sources

Efficient organization of production: Nested versus horizontal outsourcing [PDF]

, 2009
The authors characterize equilibrium and efficient modes of production by comparing nested (vertical) outsourcing with horizontal outsourcing. Nested outsourcing is found to be inefficient unless the cost of monitoring outsourced production lines ...
Shy, Oz, Stenbacka, Rune
core   +1 more source

A deep learning approach for signal identification in the fluid injection process during hydraulic fracturing using distributed acoustic sensing data

Frontiers in Earth Science, 2022
Full-cycle and real-time monitoring of the wellbore flow during hydraulic fracturing is challenging in unconventional oil and gas development. In the past few years, distributed acoustic sensing (DAS) provides opportunities to measure the acoustic energy
Yikang Zheng, Yikang Zheng, Yibo Wang, Yibo Wang, Xing Liang, Qingfeng Xue, Qingfeng Xue, Enmao Liang, Shaojiang Wu, Shaojiang Wu, Shujie An, Yi Yao, Yi Yao, Chen Liu, Jue Mei   +14 more
doaj   +1 more source

Field investigation of deformation characteristics and stress mobilisation of a soil slope [PDF]

, 2015
Stress mobilisation and deformation of a slope are important for engineers to carry out reliable design of retaining systems. However, most case histories reported mainly on the response of pore-water pressure (PWP), whereas knowledge about the stress ...
AK Leung, AK Leung, AK Leung, Anthony Kwan Leung, BSI, Charles Wang Wai Ng, CWW Ng, CWW Ng, CWW Ng, CWW Ng, CWW Ng, I Meilani, IJA Brackley, JA Smethurst, JD Coleman, K Sassa, MT Genuchten Van, N Khalili, SMO, T Sakaki, TT Lim, WA Take, YK Kim   +22 more
core   +3 more sources