Xiao-lin Qin

Learn More
The paper presents a database intrusion detection algorithm based on user query frequent itemsets with item constraints. Firstly, the paper discusses the method to mine database user query frequent itemsets by using query template. Secondly, the paper discusses the constrained query templates that are used to reduce the number of frequent itemsets and(More)
In the title cooridnation polymer, {[Cu(C(6)H(2)O(5))(C(3)H(4)N(2))(2)(H(2)O)]·3H(2)O}(n), an infinite chain is formed along [001] by linking of the Cu(C(3)N(2)H(4))(2)(H(2)O) entities with two bridging monodentate carboxyl-ate groups of two different furan-2,5-dicarboxyl-ate dianions. The geometry of the Cu(2+) ion is a square-based pyramid with the water(More)
The polymeric title compound, [Cu(C(6)H(2)O(5))(C(12)H(8)N(2))(C(5)H(10)N(2)O)](n), is composed of an infinite chain formed along [100] by linking the (1,3-dimethyl-imidazolin-2-one)(1,10-phenanthroline)copper(II) units with two O atoms of two carboxyl-ate groups of the furan-2,5-dicarboxyl-ate ligand. The Cu(II) atom, which lies on a twofold rotation axis,(More)
In the crystal structure of the title compound, [Zn(C(6)H(2)O(5))(CH(3)OH)(2)(H(2)O)](n), an infinite chain is formed along the b axis by linking of the Zn(OH(2))(CH(3)OH)(2) unit with one carboxyl-ate group of the furan-2,5-dicarboxyl-ate ligand. The Zn(II) ion is in a distorted octa-hedral environment with one weak coordination [Zn-O(carboxyl-ate) = 2.565(More)
New wireless applications has grown very quickly in recent years. In some cases, several nodes need to move as a whole while the traditional mobile IP can’t support a network roaming together. Improved Mobile IP-Roaming Supported protocol (IMIP-RS) is proposed in this paper. In IMIP-RS, the distance between mobile nodes and the domain agent can be(More)
In the crystal structure of the title compound, [Zn(C(6)H(2)O(5))(H(2)O)(3)](n), an infinite chain is formed along [001] by linking of the Zn(H(2)O)(3) entities with one carboxyl-ate group of the furan-2,5-dicarboxyl-ate ligand. Adjacent chains are linked by O(water)-H⋯O hydrogen-bonding inter-actions. The Zn(H(2)O)(3)O(3) polyhedron displays a distorted(More)
In the title coordination polymer, [Zn(C(6)H(2)O(5))(C(12)H(8)N(2))](n), an infinite chain is formed along [010] by linking the chelated {Zn(phen)} entities (phen is 1,10-phenanthroline) with two carboxyl-ate groups of the furan-2,5-dicarboxyl-ate ligand. The Zn(II) atom shows trigonal-prismatic coordination.
In the crystal structure of the title compound, {[Cu(C(6)H(2)O(5))(C(10)H(8)N(2))(H(2)O)]·2H(2)O}(n), an infinite chain parallel to [110] is formed by the linking of Cu(H(2)O)(2,2'-bipyridine) units through a furan-2,5-dicarboxyl-ate bridge. The Cu(II) atom shows a square-pyramidal geometry, with one furan-2,5-dicarboxyl-ate O atom in the apical position.(More)
The asymmetric unit of the title compound, {[Cu2(C6H2O5)2(C12H8N2)2(H2O)3]·C3H7NO} n , contains two Cu(II) atoms, two furan-2,5-dicarboxyl-ate (L) ligands, two 1,10-phenanthroline (phen) ligands, three coordinating water mol-ecules and one N,N-dimethyl-formamide solvent mol-ecule. Each Cu(II) atom is coordinated by two N atoms from one phen ligand, two O(More)