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The variations of Baltic Dry Index (BDI) and Shanghai Stock Exchange Composite Index (SSE Composite Index) over the last three years reflected the historical features of the world economy in financial crisis. In order to test the correlation of BDI and SSE Composite Index, the weekly average data of BDI and SSE Composite Index from 2007 to 2009 are taken as empirical sample data by statistical analyzing...
Most studies and applications based on SWAT model were in monthly or yearly time step. This study made an attempt to validate the adaptability of runoff simulation in the Three Gorges Reservoir areas in daily time step. By using the soil map (1:50,000), land-use map (1:50,000) in Kaixian, and weather data at Wanzhou station, the related databases were first constructed, and then a simulation was made...
Karst rocky desertification is a kind of serious land degradation. And it is the third-largest ecological and environmental problem compared with China northwest desertification and soil erosion in loess plateau. Besides, fractal geometry theory is mainly used to explore the regularity, hierarchy and scale invariance hide in complex natural phenomena. And it is a new research angle that the fractal...
With Huabei Plain of China as the study area, this research proposed a new method for pixel-level MCI (multiple cropping index) extraction with multi-temporal MODIS EVI data based on crop phenology and DT (decision tree). The method could be divided into two steps. First, based on the local crop phenology, several features were identified to discriminate pixel-level MCI, which includes three types:...
Total of 120 soil samples from the topsoil (0-20 cm) at an approximate interval of 100 m were collected in Wutan, China, to determine the spatial variability of five heavy metals, Cd, As, Hg, Pb, and Cr, with classical statistical and geostatistical analyses. Ordinary kriging was utilized for estimating heavy metals determination. Classical statistical indicated that As, Pb, and Cr concentrations...
This paper proposes a method of localizing the Chinese license plate based on gray level variations. The proposed method has three stages. Firstly, roughly localize license plates, secondly, binarize the license plates, and finally, accurately localize the license plates. Testing results show that the presented method has an average localization rate of 96.06%
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