in this work, the time series modeling was used to predict the tazareh coal mine risks. for this purpose, initially, a monthly analysis of the risk constituents including frequency index and incidence severity index was performed. next, a monthly time series diagram related to each one of these indices was for a nine year period of time from 2005 to 2013. after extrusion of the trend, seasonali...

Precision and accuracy estimation is an important index used to reflect the measurement performance and quality of a measurement system. To reveal the significance and connotations of the precision and accuracy estimation index of a close-range photogrammetry system, several common precision and accuracy estimation methods used in close-range photogrammetry are explained from a theoretical pers...

while weeds in sugar beet farming reduce crop yield and quality, they also lead to higher labor and material losses. in recent years, in order to eliminate or reduce the damage caused by weeds in sugar beet farming, weed control has gained importance. to this end, various studies have been conducted on robotic weed control by detecting weeds using image processing algorithms and hoeing or spray...

In the present paper a 2-means clustering-based anomaly detection technique is proposed. The presented method parses the set of training data, consisting of normal and anomaly data, and separates the data into two clusters. Each cluster is represented by its centroid one of the normal observations, and the other for the anomalies. The paper also provides appropriate methods for clustering, trai...

An effective and accurate poverty-alleviation system is necessary for eradicating poverty promoting regional economic social growth. Performance evaluation plays a key role in developing precise policy. However, systematic performance of efforts has been largely ignored the literature. This study sorts 10 major urban areas Shaanxi Province using count analysis method. The empirical findings sho...

The evaluation of the canopy in orchard cultivation is a key aspect for main techniques, such as pruning, thinning, harvesting, production and improved fruit quality. possibility having periodic screening state development vegetation can be practical support to growers. Research on application precision agriculture has provided tools reading interpreting crops, resulting information potentially...

Layers with gradient refractive-index profile are an attractive alternative to conventional homogeneous stack coatings. However, the optical characterization and monitoring of graded is a complex issue, which has been typically solved by using simplified model mixed materials. Although this approach provides solution problem, precision, can be expected from refractive index gradient, remains un...