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The traditional TF-IDF algorithm is a common method that is used to measure feature weight in text categorization. However, the algorithm doesn't take the distribution of feature terms in inter-class and intra-class into consideration. Consequently, the algorithm can't effectively weigh the distribution proportion of feature items. In order to solve this problem, information entropy in inter-class...
Yangtze River Delta is a very important region for China's economic development has played a pivotal role.Then their development mechanism of it is very necessary, but for regional development data, since the existence of space and space-related since the heterogeneous nature of the use of the general regression equation does not apply. In this paper, in recent years to develop the new GWR regression...
In order to improve the rate of bandwidth utilization and achieve dynamic bandwidth allocation, in this paper, the video stream predication model of Kalman filter is improved according to linear prediction of future frames. The Kalman filtering owns a minimum mean square error estimate when the observed variables and noise are jointly Gaussian noise. Noise reduction is applied, and then the technology...
The result of high-amplitude growth of consumption and the low-amplitude growth of production intensified the contradiction between supply and demand of crude oil, which requires a large amount of crude oil imported from abroad to meet the domestic consumption needs. Due to the fact that the forecast of the shipping import volume is an imperative component in our energy security system, this paper...
To model a high-resolution 3D human body model based on a set of image is a challenge work. In this paper, we present the 3D human body model reconstructed technique based on a generic model deformation method and a color texture standardization technique. Firstly a set feature points on images and their corresponding character vertices on generic model are defined. Then a customized model is yielded...
The Chlorophyll-a (Chl-a) concentrations in water is of great importance for the monitoring of water quality and ecosystem balance. Remote sensing offers a convenient and systematical tool for the observations of water at a long time scale. In this paper, we present a study of Chl-a estimation using the reflectance models (MOD3 and MOD2) derived from the Medium Resolution Spectral Image (MERSI) onboard...
Vegetation parameters are important to improve the performance of numerical weather prediction, global change monitoring, and ecosystem modeling. In the study, Discrete Anisotropic Radiative Transfer (DART) model is employed to simulate Bi-directional Reflectance Distribution Function (BRDF)of heterogeneous landscape scenes. The simulated BRDF is required to match the measured BRDF by the POLDER (POLarization...
This article analyzed domestic and foreign contribution and fusion research actuality between informationization and advanced orbital transportation equipment manufacturing industry, introduced China emphatically about the informationization and the advanced orbital transportation equipment manufacturing industry policy development environment. First, the Informationization to advanced orbital transportation...
The characteristic of water transport and loss in a direct-seeded paddy field, Danyang Region at upstream of Taihu Lake Basin, was studied under local traditional field water management using Hydrus-1D model. Results show that the drying/wetting boundary condition on soil surface was well simulated by using divided stress period method in the Hydrus-1D model, and the estimated hydrodynamic parameters...
With continuous increase of carbon emission, China is facing more and more pressure from international community. However, what is the driving force of China's carbon emission growth? Whether China's carbon emission should be borne by the Chinese people? Based on carbon accounting resulted from energy consumption, this paper quantitativly analyze the effect of exports on carbon emission using China's...
Many current models of ecosystem carbon exchange based on remote sensing such as the MODIS17 product are complex and require considerable input variables from ground-based meteorological measurements. They can introduce substantial errors into the carbon exchange estimates because these data are often not available at the same spatial scale as the remote sensing imagery. Here we propose a new net...
Cellular automata(CA) have been increasingly used to simulate complex land use systems. Empirical data can be used to calibrate cellular automata models. Thus, realistic urban patterns can be generated. Traditionally, artificial neurology network(ANN) was used to calibrate cellular automata models. As artificial neurology network easily fall into local minimum value, the genetic algorithms neurology...
Considering the utility of nodes in distributed environment, a resource allocation method based on comparative advantage is presented, which achieves maximum system efficiency by making global equilibrium. Different from the neoclassical economics theory, the new classical economics theory achieve Pareto Optimality by tuning the allocation policy dynamically with the division of labor theory. Simulation...
The Co-simulation technology for complex product development, design, innovation, assessment, management provided full support. Based on the analysis of complex products co-simulation features, functions and modeling on the basis of the process, based on the HLA/WE_RTI co-simulation of complex product platform and its architecture, Based on a simulation of product integration modeling, simulation...
Product innovation is the main way for the economic development of enterprise, but product innovation project is high ricky and uncertainty, so the risk assessment and management of product innovation project has become concerned about academic and business community.This paper intends to do a systemic analysis of product innovation project risk evaluation, researching the product innovation project...
Visual Simulation, which has been applied widely to provide convenience to people from every walk of life, plays a crucial role in the field of Virtual Reality. In this thesis, 8 models representing 8 typical materials, are created by MultiGen Creator, and rendered by Vega for analysis of relation between grey values in simulated pictures and real radiance. Finally, the method of infrared simulation...
Simulation of soil salinity is the basis for effective control of salinization and utilization of regional salinization lands. This paper was to simulate dynamic of soil salinity with pedo-transfer functions (PTFs) and geographic information system (GIS) technology based on facile variables in Yellow River Delta. Simulating models were derived from field observation data of soil salinity, EC and water...
Through analysing some limitations of traditional workflow technique applied in enterprise information system, This paper proposes a model of the distributed workflow management system which based on Web Service, researches the design idea and some key techniques, and analyses key points of the distributed collaborative workflow such as the modeling method, the system activation flow model, workflow...
Suppose the stock returns series has a fat tail distribution characteristics of GED, and select the stock return series of three types of listed companies from 2007 to 2009 as the sample data, empirical analysis credit situation and probability of default of the listed companies in China before and after the financial crisis. Research indicates that the model can be well with the actual economic situation...
As a unique natural region unit and the "buffer zone" which connects reservoirs and its peripheral region, the reservoir shore zone not only provides geographical space and resources-environmental supporting conditions for the local socio-economic development, but also plays a "barrier" role in maintaining reservoir ecosystem services function and protecting the environmental security...
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