Results 21 to 30 of about 125,970 (301)
Comment on "Direct photodetachment of F$^-$ by mid-infrared few-cycle femtosecond laser pulses" [PDF]
, 2016 Multiphoton detachment of F$^-$ by strong few-cycle laser pulses was studied by Shearer and Monteith using a Keldysh-type approach [Phys. Rev. A 88, 033415 (2013)]. We believe that this work contained errors in the calculation of the detachment amplitude
Gribakin, G. F., Law, S. M. K.
core +2 more sources
Design of networked remote control testing system for shearer
Gong-kuang zidonghua, 2014 Due to high cost and difficulty to research remote control system for shearer on actual working face, the paper proposed a design scheme of networked remote control testing system for shearer, researched internal control structure of shearer met testing ...
LIN Fuyan, LI Jun, HAN Yunlong
doaj +1 more source
Australian local governments and the early national broadband network roll-out: an online survey [PDF]
, 2016 A recent decision by the Australian Federal Government to reassess the scale of the National Broadband Network (NBN) will leave the country with a patchwork of different levels of access to the infrastructure. This intensifies the need to investigate and
Alizadeh, Tooran, Shearer, Heather
core +3 more sources
Gong-kuang zidonghua, 2019 In view of problems that current virtual simulation of shearer mining operation are mostly based on preset trajectories, seldom consider impact of coal seam loading and can not show dynamic process of shearer operation, three-dimensional simulation of ...
WANG Xiao
doaj +1 more source
Applied Sciences, 2023 The shearer positioning method is of great significance to the automation of longwall mining. The research teams in the Longwall Automation Steering Committee (LASC) of Australia and China University of Mining and Technology (CUMT) have focused on ...
Weiwei Dai, Shijia Wang, Shibo Wang
doaj +1 more source
Data-Driven Cooperative Control Model of Shearer-Scraper Conveyor Based on Rough Set Theory
Frontiers in Energy Research, 2022 The cooperative control of shearer and scraper conveyors is the prerequisite for the realization of intelligent comprehensive mining equipment and unmanned comprehensive mining workings. However, because of the harsh working face environment, the complex
Shuanfeng Zhao +8 more
doaj +1 more source
Improving the process of coal extraction based on the parameter optimization of mining equipment [PDF]
, 2018 The aim of this paper is to develop and validate methods of choosing the means of the mining face mechanization. This paper analyses existing methods of optimizing processes in mining.
Hrinov, Volodymyr, Khorolskyi, Andrii
core +1 more source
A Search for Temporal Variations in Station Terms in Southern California from 1984 to 2002 [PDF]
, 2008 We use relative arrival times and locations for similar earthquake pairs that are found using a cross-correlation method to analyze the time dependence of P and S station terms in southern California from 1984 to 2002.
Hauksson, Egill +2 more
core +1 more source
The Lefthanded Local Lemma characterizes chordal dependency graphs [PDF]
, 2012 Shearer gave a general theorem characterizing the family $\LLL$ of dependency graphs labeled with probabilities $p_v$ which have the property that for any family of events with a dependency graph from $\LLL$ (whose vertex-labels are upper bounds on the ...
Pegden, Wesley
core +2 more sources
Shearer positioning method based on non-holonomic constraints
Gong-kuang zidonghua, 2022 At present, the shearer positioning method is based on the combination of the inertial navigation system and odometer. The method directly uses the output of the odometer to correct the shearer forward speed calculated by the inertial navigation system ...
SONG Danyang +5 more
doaj +1 more source