Humans and other primates shift their gaze to allocate processing resources to a subset of the visual input. Understanding and emulating the way that human observers free-view a natural scene has both scientific and economic impact. While previous research focused on low-level image features in saliency, the problem of “semantic gap” has recently attracted attention from vision researchers, and...

The activities of mining exploitation in Campo de Jales were performed in an uncontrolled way and gave rise to serious environmental contamination: rubbish depositories have been accumulated with no treatment or maintenance. An investigation developed around Jales Mine showed the existence of some chemical impact originated from the waste produced during mining activities. Some "black spots" fo...

Figure 13: The total matrix ll time for each of the three methods: LU Decomposition , Conjugate Residual iteration, and the ns-form algorithm.

In recent years, three-dimensional (3D) models are being built in many fields including mining. These products often used to develop a database of smart mines which terms can be the management production underground coal mines. Unmanned aerial vehicle (UAV) and terrestrial laser scanning (TLS) technologies known as two main that quickly accurately collect 3D point cloud (PC) data. This article ...

this study was carried out for the purpose of investigating the issue of tailings dams as a potential source of contamination by trace elements in soils at the sidi bou othmane mine in the marrakech region, morocco. soil samples taken from depths of up to 15 cm and within a radius of 50 m from the tailings dams, were analyzed for cd, cu, pb and zn using atomic absorption spectrometry. average c...

the present study represents a first insight into the draa lasfar min (marrakech - morocco) to assess the degree of polymetallic pollution caused by anthropogenic activities (like mine extraction) and consequently the possible diffusion of heavy metals and to predict the risk of their mobility in the surroundings of the mine area. the edaphologic parameters ph and electrical conductivity (ec) w...

The determination of the Ultimate Pit Limit (UPL) is the first step in the open pit mine planning process. In this stage that parts of the mineral deposit that are economic to mine are determined. There are several mathematical, heuristic and meta-heuristic algorithms to determine UPL. The optimization criterion in these algorithms is maximization of the total profit whilst satisfying...

In this paper, negative poisson's ratio material is used to fill the interlayer of mine refuge chamber, and its characteristics such as light weight, thermal insulation, vibration isolation impact resistance are improve insulation ability chamber. The equivalent density, elastic modulus yield strength structure Q345 were obtained by simulation analysis. was filled into energy absorption explosi...