There are approximately 470,000 km(2) of karst aquifers that feed many large springs in North China. Turbulent flow often exists in these karst aquifers, which means that the classical ground water model based on Darcy's law cannot be applied here. Ground water data are rare for these aquifers. As a consequence, it is difficult to quantitatively investigate ground water flow in these karst syst...

BACKGROUND Co-morbidity within anxiety disorders, and between anxiety disorders and depression, is common. According to the theory of Gray and McNaughton, this co-morbidity is caused by recursive interconnections linking the brain regions involved in fear, anxiety and panic and by heritable personality traits such as neuroticism. In other words, co-morbidity can be explained by one disorder bei...

Due to the continuous improvement of productivity, transportation demand freight volume is also increasing. It difficult organize efficiently when quite large. Therefore, predicting total amount goods transported essential in order ensure efficient and orderly transportation. Aiming at optimizing forecast volume, this paper predicts Xi’an based on Gray GM (1, 1) model Markov forecasting model. ...

This paper presents an empirical study of texture analysis for feature extraction and classification of high spatial resolution remotely sensed imagery (10 meters) in terms of specific land cover types. Little is known as to which texture features are important for separating specific land covers with a per-pixel classifier. The principal method examined is the use of spatial gray tone dependen...

The continuous growth in total health expenditure (THE) has become a social issue of common concern most countries. In China, the is maintaining rapid trend that higher than economy, which increasingly obvious 21st century and brought heavy burden to government residents. To analyze main driving factors THE China establish predictive model, gray system theory was employed explore correlation de...

In this paper, the authors discuss problem of influence level electrification in African countries on their sustainable development. The first aim article is to determine relationship between changes index and indicators showing individual components development for countries. analyzed include GDP per capita, Human Deveopment Index (HDI), CO2 emissions capita indicator. second goal was develop ...