Results 51 to 60 of about 7,369 (191)

Do robots boost productivity? A quantitative meta‐study

Journal of Economic Surveys, EarlyView.
ABSTRACT This meta‐study analyzes the productivity effects of industrial robots. More than 1800 estimates from 85 primary studies are collected. The meta‐analytic evidence suggests that robotization has so far provided, at best, a small boost to productivity. There is strong evidence of publication bias in the positive direction.
Florian Schneider
wiley   +1 more source

Method for calculation of drilling-and-blasting operations parameters for emulsion explosives [PDF]

, 2019
Purpose. Development of a new method for calculation of drilling-and-blasting operations parameters during underground mining with application of emulsion explosives taking into account their energy characteristics as well as physical and mechanical ...
Khomenko, O, Kononenko, M, Kovalenko, I, Savchenko, M   +3 more
core   +1 more source

Similar Material Simulation Study on Dam Movement and Deformation Law of Deep Coal Seam Mining Under Dam

Energy Science &Engineering, Volume 14, Issue 4, Page 1808-1821, April 2026.
Aiming at the difficulties in accurately calculating the movement and deformation of small‐sized, deep‐buried dams with a significant height‐to‐depth ratio in deep fully mechanized caving mining, this study proposes to separate the analysis of surface and dam deformation.
Zhang Feng, Qin Hong‐yan, Hu Shou‐bin, Xu Xiao‐yu, Ti Zheng‐yi, Zheng Zhuo‐yan, Yang Shuai, Li Yang   +7 more
wiley   +1 more source

Rib/snook design in mechanised depillaring of rectangular/square pillars [PDF]

, 2016
This is the author accepted manuscript. The final version is available from Elsevier via the DOI in this record.A field study at different mechanised depillaring (MD) operations in Indian coalfields (with depth ranging from 60 to 377 m and caveability ...
Coggan, John
core   +1 more source

Structure Optimization and Signal Enhancement of Three Coil Electromagnetic Abrasive Particle Sensor

Taiyuan Ligong Daxue xuebao
Purposes In order to improve the detection accuracy of electromagnetic abrasive particles on small particles, the influencing factors of the induced signal of one-excitation, two-in-ductive three-coil electromagnetic abrasive sensor are studied, and ...
WANG Yuewei, PANG Xinyu, QIN Guojun, GUAN Chongyang, HU Shouxin, LYU Kaibo, ZHANG Xuemei   +6 more
doaj   +1 more source

Failure mechanism of the coal wall at the working face based on an eccentric compression mechanical model

Deep Underground Science and Engineering, Volume 5, Issue 1, Page 127-143, March 2026.
In this study, the nonuniform distribution of the bearing pressure in front of the coal wall has been revealed based on in situ monitoring data and numerical simulation results. Therefore, an eccentric compression mechanical model of the coal wall was established to study the deformation and failure characteristics of a coal wall. The slenderness ratio
Maolin Tian, Jiabao Wang, Changsheng Wang, Shijie Sun, Lijun Han, Qingbin Meng, Sunhao Zhang   +6 more
wiley   +1 more source

Intelligent Fault Diagnosis of Rolling Bearing Based on the Depth Feature Fusion Network

IEEE Access
An intelligent fault diagnosis method of rolling bearings based on a depth feature fusion network was proposed to solve the problems of a single original signal, large noise interference and difficult diagnosis of varying working conditions of rolling ...
Zihan Feng, Hua Ding, Ning Li, Guoshu Pu, Wenbo Gong   +4 more
doaj   +1 more source

Failure Mechanism of Asymmetric Large Deformations Under Repeated Mining in Roadways

Energy Science &Engineering, Volume 14, Issue 3, Page 1195-1212, March 2026.
Principal stress‐evolution diagram at different advance positions of 42205 working face. ABSTRACT To address the challenge of controlling severe asymmetrical deformation in roadways subjected to repeated mining, this study (i.e., based on the engineering context of the Buertai Coal Mine) investigated the characteristics of the regional stress field in ...
Ai‐Rong Wang, Tao Peng, Kang Zhou, Chong‐Yu Song   +3 more
wiley   +1 more source

Systematic analysis of production and efficiency factors of fully-mechanized mining in steeply dipping seam and research on precise strategy of promoting production and efficiency

Meitan kexue jishu, 2023
Steeply dipping seam is still internationally recognized as a complex and difficult coal seam. There are many and extensive coal seams in China with excellent coal quality.
Dongfeng YUN, Haonan LI, Yongping WU, Zhengping HUANG, Lin YANG   +4 more
doaj   +1 more source

Towards Carbon Neutralization: Clean and Efficient Use of Coal

Carbon Neutralization, Volume 5, Issue 1, January 2026.
This paper provides a comprehensive exploration of the clean and efficient utilization of coal resources, with a particular emphasis on the potential of coal chemical technology, carbon materials, and CCUS technology, and the opening up of innovative pathways for the utilization of coal resources.
Xin Wen, Wei Song, Xue Wang, Chunrong He, Xinyue Chen, Ting Wang, Penggao Liu   +6 more
wiley   +1 more source