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The author constructed a linear schemes type Region-Project-Join-Normal-Form based on lossless join decomposition, and gave the form of RPJNF through the presentation of equivalence between semantic variable independence and syntax variable independence under finite precision domain. Some other new constraint data dependencies including partitioned multi-region existence dependency and single region existence dependency were also presented. A result of variables set under linear transformation was discussed.

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This function is used to change a regular variable into an array, by separating it on a certain character. Takes two arguments: the separator and the variable, and returns the array. Used like this

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A new concept of turn variable lane from the service level of signal intersection and the right-of-way was proposed. The principles and conditions of setting the turn variable lane were analyzed.

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Simple regression analysis estimates the relationship between the dependent variable and one independent variable.

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ShTat1.3 and ShTat1.5 are two variable antigen types of a cloning Anhui strain of Trypanosoma evansi.Total RNA of the two variable antigen types were extracted by acid guanidinium thiocyanate-phenol-chlorform single step method.

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In the process of solving it, the slack variable was introduced, which has an important physical meaning. If the slack variable of the solution has a larger value, it means there's an unknown water source.

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The ratio of direct cost is the top one input variable which is needed to be reduced to certain level for efficiency improvement through our slack variable analysis.

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In the solution of the Difichlet boundary problem ofLaplace equations, we provide an effective method for determining the spectral radiusand the best slack variable of block basic iterative methods. At the same time, wepresent the spectral radius and the best slack variable of basic iterative methods from thenine-point difference scheme.

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