Results 31 to 40 of about 399,174 (293)

Fusion of aerial images and sensor data from a ground vehicle for improved semantic mapping [PDF]

, 2007
This work investigates the use of semantic information to link ground level occupancy maps and aerial images. A ground level semantic map, which shows open ground and indicates the probability of cells being occupied by walls of buildings, is obtained by
Achim J. Lilienthal, Beveridge, Canny, Felzenszwalb, Freund, Früh, Gonzales, Huber, Martin Persson, Mayer, Mueller, Persson, Surmann, Thrun, Tom Duckett, Tupin   +15 more
core   +1 more source

Analysis of overburden structure and evolution characteristics of hard roof mining in extremely thick coal seam

Meitan kexue jishu, 2023
The mining of extremely thick coal seam form a large space stope, the fracture disturbance of hard roof spreads to a wide range, the working face weighting has the characteristic of “strong mine pressure”, it is obviously different from rock burst ...
YU Bin, KUANG Tiejun, YANG Jingxuan, ZHU Weibing   +3 more
doaj   +1 more source

Study of Reasonable Hanging Roof Length on Hard Roof

Procedia Engineering, 2011
AbstractThe thesis, from the character of hard roof on longwall working face, moving character and control request, by establishing mechanical model and theoretic deduced method, achieves supporting strength of the breaker props and pressure interval control under the control of hard roof on longwall working face, and therefore realizes managing the ...
openaire   +1 more source

Investigation of the process of perforating hard roof in an innovative technology of directional roof‐cutting by composite blasting

Energy Science & Engineering, 2023
AbstractThe hard roof in coal mines will induce strong pressure problems for the working face and the lanes, which will seriously affect the safe and efficient production of the mine. For these issues, our team developed a new technology of cutting hard roof by composite blasting.
Bochao Ma, Yang Tai, Yong Li, Hongchun Xia, Xiangbin Meng   +4 more
openaire   +2 more sources

Characteristics of strong mine pressure manifestation in composite hard roofs and determination of main controlling layers

Gong-kuang zidonghua
The interactions within the composite hard roof structure above coal seams are highly complex, making it challenging to identify the main controlling layers for pressure relief via hydraulic fracturing. Using the 31104-1 working face of the Nalinhe No. 2
LI Yanjun
doaj   +1 more source

Electrochemical strategy for grown ZnO nanoparticles deposited onto HY zeolite with enhanced photodecolorization of methylene blue: Effect of the formation of Si O Zn bonds [PDF]

, 2013
Nanoparticles of electrogenerated zinc-supported HY zeolite (EGZnO/HY) catalyst were prepared by a simple electrochemical method. The interaction between zinc species and HY support during the electrolysis was found to affect the EGZnO/HY structure.
Efendi, J., Hairom, Nur Hanis Hayati, Jalil, A.A., Jusoh, N.W.C., Sah, R.N.R.A., Sapawe, N., Triwahyono, S.   +6 more
core   +1 more source

Research on the Key Technology of Gob-Side Entry Retaining by Roof Cutting for Thick and Hard Sandstone Roofs

Sustainability, 2022
In order to ensure the application of gob-side entry retaining by roof cutting for thick and hard sandstone roofs, the key technology of pre-split blasting was studied. The LS-DYNA was used to analyze the blasting effect of the energy-gathering pipe. Using the methods of theoretical analysis and numerical simulation, it was determined that the optimal ...
Chaowen Hu, Eryu Wang, Qian Li, Yilong Wang, Yongyuan Li, Xingfeng Sha   +5 more
openaire   +1 more source

Maximum Persistency in Energy Minimization [PDF]

, 2014
We consider discrete pairwise energy minimization problem (weighted constraint satisfaction, max-sum labeling) and methods that identify a globally optimal partial assignment of variables.
Shekhovtsov, Alexander
core   +3 more sources

Radiative Cooling by Green(er) Solvents‐Upcycled Polyvinyl Chloride From Drug Blisters Waste

Advanced Optical Materials, EarlyView.
This study explores upcycling poly(vinyl chloride) (PVC) from used pharmaceutical blisters into sustainable radiative cooling materials. Using solvent separation and membrane fabrication, PVC was converted into white membranes paired with aluminum foil.
Andrea Lanfranchi, Paola Lova, Davide Comoretto   +2 more
wiley   +1 more source

Kindergarten [PDF]

, 2015
Diplomová práce řeší projektovou dokumentaci k provedení novostavby mateřské školy. Stavbu tvoří dva dvoupodlažní objekty se střechou pultovou a jeden jednopodlažní objekt s plochou vegetační střechou.
Foltas, Petr
core