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APEX nominal bandwidth and band center specifications and are provided as MODTRAN 4 input for the instrument model. In several application configurations, the typically used Gaussian SRF is used as reference and compared with radiances resulting from hypothetical instruments based on the four other shapes to detect differences in selected spectral subsets(More)
Nucleotide pools in mammalian cells change due to the influence of antitumor drugs, which may help in evaluating the drug effect and understanding the mechanism of drug action. In this study, an ion-pair RP-HPLC method was used for a simple, sensitive and simultaneous determination of the levels of 12 nucleotides in mammalian cells treated with antibiotic(More)
To improve the speed of pattern recognition, a fast algorithm based on target contour is put forward. This algorithm recombines the original moment invariant and the contour moment invariant, which is called a relative contour moment invariant. This algorithm is discussed and tested with scaling, translation and rotation invariance. The recognition rate is(More)
– With the continued development of space borne process examines an image cube for bad pixels (stripes) and noise levels, determines spectral (smile effect) and spatial (keystone) registration per pixel, as well as evaluating the image cube for optimal signal gain and offset, and applies the relevant corrections. Where applicable, a scene-based (vicarious)(More)
Cognitive radio (CR) is efficient method for wireless application environment short of radio spectrum resource. Spectrum detection for primary idle spectrum sensing is essential for cognitive radio networks. The ability that cognitive users detect the primary spectrum is restricted due to multi-path effect and shadow fading, resulting in the lower spectrum(More)
This paper applies fuzzy clustering theory to customer relationship management of securities industry and presents securities business model of CRM. The model includes two layers. First, in class classification layer, fuzzy clustering model is used to realize customer classification according to such index as trading frequency, trading capacity and interest(More)
With the development of the conceptual design of the Canadian Hyperspectral Environment and Resource Observer (HERO) mission, its performance needs to be evaluated for different applications areas. Accordingly, this paper investigated the potential of the HERO mission for geoscience applications, such as mineral identification for mapping, exploration and(More)
This paper describes the importance and definition of churn analysis of securities business. According to the RFM model of CRM theory and decision tree method, churn analysis model of securities business is set up based on data mining from securities history trading database. In order to simplify the structure of decision tree, optimal stopping method is(More)