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The linear regression model based on the ordinary least square (OLS) estimation is a commonly used method for crop yield predicting. But it is not adequate in many cases because spatial autocorrelation among variables may violate the underlying assumption that observations are independent. In this study, we compared the OLS regression model and the spatial autoregressive model for predicting corn...
Aiming at the drawbacks of traditional static methods not considering dynamic changes of depths on a chart, the paper proposes a method for determining the navigability of a planned route based on an instantaneous depth model. Firstly, Instantaneous water levels are forecasted based on a grid tide model and incorporated into depths in a chart, and obstacle areas are acquired dynamically with changing...
In this paper, fuzzy comprehensive evaluation and Matlab combining method is applied to the assessment of cadres, the first divided into four categories based on attributes in each category was divided into four categories, first in the various factors in the implementation of a single judge, and then together to implement a secondary evaluation, and finally given the realization of the Matlab model...
Network traffic has the characteristic of self similarity. We can create its model based on measure and physical method. The detail model includes FBM, FGN, on/off, and so on. Then carried on research and practice on the concrete problem that the flow of network produced, such as: distributed production of random number, control algorithms on the basis of feedback mechanism of the flow. Especially...
For assessing the security and optimal strengthening of large enterprise networks, this paper proposes a new approach uses configuration information on firewalls and vulnerability information on all network devices to build defense graphs that show the attack and defense strategy. Some models including a defense graph model, attack-defense taxonomy and cost quantitative model, and Attack-Defense Game...
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