Surveillance videos of coal mining faces have close relation to the safety of coal miners and mining efficiency. However, surveillance videos are always disturbed by some severe conditions such as atomization, low illumination, glare, and so on. Therefore, this paper proposed a hybrid algorithm (SSR-BF) based on the integration of single-scale Retinex (SSR) and bilateral filtering (BF) to enhan...

-Contemporary research in mining high utility itemsets from the databases faces two major challenges: exponential search space and database-dependent minimum utility threshold. The search space is very huge when number of distinct items and size of the database is very large. Data analysts must specify suitable minimum utility thresholds for their mining tasks though they may have no knowledge ...

Data mining combines machine learning, statistics and visualization techniques to discover and extract knowledge. One of the biggest challenges that higher education faces is to improve student retention
 (National Audition Office, 2007).
Student retention has become an indication of academic performance and enrolment management. Our project uses data mining and natural language processing tech...

To study the caving of thick hard overburdens and evolution water-conducting fracture zones in fully mechanized top-coal faces gently inclined extra-thick coal seams, we comprehensively analyzed 8103 working face Beixinyao Coal Mine. We investigated to characteristics overburden faces, information internal structure overburden, development heights “two zones” after mining. Our research methods ...

In the present study, an investigation was carried out on Parvadeh coal mine in Tabas, Iran, to survey the effect of fractures on unusual methane gas emission in coal mines. This coal mine was chosen for investigating because of its high methane gas content in the coal body and available data from sensors in desired locations. Gas concentration monitoring programs were carried out at the mine s...

We define type A, type B, type C as well as C∗-semi-finite C∗-algebras. It is shown that a von Neumann algebra is a type A, type B, type C or C∗-semi-finite C∗-algebra if and only if it is, respectively, a type I, type II, type III or semi-finite von Neumann algebra. Moreover, any type I C∗-algebra is of type A (actually, type A coincides with the discreteness as defined by Peligrad and Zsidó),...

Sustainable development in coal mining requires a continuous and efficient method of extraction. Research shows that gob-side entries retained through roof cutting (RCGE) are vital for improving efficiency, enhancing recovery rates, enabling production. However, the mechanism surrounding rock deformation during close-distance co-mining seams with this technique is not yet clear. For Jiaokou min...

Abstract The coal mine pump station liquid supply system adapts to changes in the main pressure for supply, but under conditions of long-distance beyond 2000 m, there is a problem with difficult response hydraulic support demand, resulting significant fluctuations and serious performance degradation system. To solve this problem, intelligent method based on demand prediction mining faces propos...