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X-code is an important 2-erasure correcting vertical array code. In this paper, we present a combinatorial representation for X-code. It is based on graph representation of binary linear/array codes. We represent X-code by Cayley tables of the cyclic groups of prime order - a special column-Hamiltonian Latin squares (CHLS). This representation is helpful to comprehend X-code's 2-erasure correcting...
In this paper, we present a method to measure the survivability of an object-oriented software in design phase. Each component is responsible for this measuring and the relations between components are based on the communication type. Each component can be characterized by a composite Petri net which combines the features of statechart and object diagram. A fuzzy number is introduced to this net to...
Association rule of data mining mainly refers to digging out an interesting correlation, opening out the unknown inter-dependence in a great deal of the data. This paper firstly set up inspection indexes for enterprise income tax, and then applies the apriori algorithm of association rules of data mining into tax inspection cases-choice. This method can accurately find the dishonest enterprise in...
Single-strand conformation polymorphism (SSCP) method was performed to investigate the microbial community in vermifiltration. Vermifiltration was a newly ecological and high efficient process to treat sewage and sludge synchronously. The experimental results indicated that PCR-SSCP can more truly reflect the existing system of micro-organisms groups. Bacillus, the dominant populations, in the vermifiltration...
In this paper, we investigate the influence on shear strength of the roots of four typical plants which can fix the soil in coal mining subsidence area by direct shear tests ,and the shear strength of the root soil composite .The results indicate that with the same root diameter (1.25 mm) , Sabina valgsris Ant., Salix psammophila, Caragannmicrophylla Lam. Artemisia sphaerocephala Krasch are more intensive...
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