Zobrazeno 1 - 10
of 1 013
pro vyhledávání: '"Qu Shi"'
Publikováno v:
Gong-kuang zidonghua, Vol 39, Iss 9, Pp 1-4 (2013)
In view of problem of false data existed in coal mine monitoring and control system, the paper summed up main causes of false data of coal mine monitoring and control system through field investigation, testing and analyzing, pointed out surge interf
Externí odkaz:
https://doaj.org/article/45c9c7b760294b69b689e76de1800967
Publikováno v:
Gong-kuang zidonghua, Vol 39, Iss 7, Pp 1-4 (2013)
The paper introduced testing method of mean time between failures, did site test of mean time between failures in four coal mines to the same coal mine monitoring system, and got mean time between failures of main equipments of the monitoring system.
Externí odkaz:
https://doaj.org/article/547e9455c6b542e7be12ab69148373be
Autor:
ZOU Zhe-qiang, QU Shi-jia
Publikováno v:
Gong-kuang zidonghua, Vol 39, Iss 6, Pp 1-5 (2013)
The paper detailedly analyzed problems of how to determine lag time of data between two sensors, effect of sensor error, accuracy rate of alarm in application of alarming method for abnormal data of coal mine gas based on three kinds of correlation m
Externí odkaz:
https://doaj.org/article/ca93452d7a4b44dbabc1214efbb34925
Publikováno v:
Gong-kuang zidonghua, Vol 39, Iss 5, Pp 1-5 (2013)
In view of problem that underground monitoring devices are mainly influenced by electromagnetic interferences of medium and low frequency band, main electromagnetic interferences of medium and low frequency band of coal mine underground, namely surge
Externí odkaz:
https://doaj.org/article/7b01454c27e440a5ad58a00fb2a7afe1
Autor:
LU Jian-jun, QU Shi-jia
Publikováno v:
Gong-kuang zidonghua, Vol 39, Iss 1, Pp 13-16 (2013)
For problem that abnormal gas change below pre-set warning value cannot be found in time because existing safety monitoring and control systems of coal mine use overrun theory and take measured value by gas sensors as criterion, the paper proposed a
Externí odkaz:
https://doaj.org/article/3c6309e96b604e2aba182c030bc9f3c5
Publikováno v:
Gong-kuang zidonghua, Vol 38, Iss 6, Pp 28-32 (2012)
In view of problem that interference meter or spectrum analyzer can only measure radiated interference intensity of interference source in industrial environment, the paper proposed a measuring method for induced and conducted interference in industr
Externí odkaz:
https://doaj.org/article/affd1e289089484680fe18ada52eace6
Autor:
ZOU Zhe-qiang, QU Shi-jia
Publikováno v:
Gong-kuang zidonghua, Vol 37, Iss 9, Pp 1-5 (2011)
For problems of low reliable performance and inadequate utilization of monitored data of safety monitoring system of coal mine, a viewpoint was proposed that system reliability could be improved by prolonging mean time between failures of important e
Externí odkaz:
https://doaj.org/article/129dbff4e16d4bd58c1a1957b0369151
Autor:
Tao, Jun-Bo, Sun, Bai-Qing, Zhu, Wei-Dong, Qu, Shi-You, Li, Jia-Qiang, Li, Guo-Qi, Wang, Yan-Yan, Chen, Ling-Kun, Wu, Chong, Xiong, Yu, Zhou, Jiaxuan
We firstly simulated disease dynamics by KAN (Kolmogorov-Arnold Networks) nearly 4 years ago, but the kernel functions in the edge include the exponential number of infected and discharged people and is also in line with the Kolmogorov-Arnold represe
Externí odkaz:
http://arxiv.org/abs/2203.11740
Publikováno v:
MATEC Web of Conferences, Vol 63, p 02034 (2016)
The hydro forming process of hollow crankshaft was numerically analyzed and simulated based on Dynaform. Then the influence to hydro forming process in different loading paths was studied and the match relations between optimum forming pressure and a
Externí odkaz:
https://doaj.org/article/2ae6f5106eb542f984bf05e6fd638dbc
Publikováno v:
In Measurement January 2024 224