Theoretical study of subwavelength imaging by acoustic metamaterial slabs (2009)
Deng, Ke, Ding, Yiqun, He, Zhaojian, Zhao, Heping, Shi, Jing, Liu, Zhengyou
We investigate theoretically subwavelength imaging by acoustic metamaterial slabs immersed in the liquid matrix. A near-field subwavelength image formed by evanescent waves is achieved by a designed...
Graded negative index lens with designable focal length by phononic crystal (2009)
Deng, Ke, Ding, Yiqun, He, Zhaojian, Liu, Zhengyou, Zhao, Heping, Shi, Jing
We realize a flat lens with graded negative refractive index by a two-dimensional phononic crystal. The index-grade is achieved by gradual modification of the filling fraction along the transverse...
Finding Frequent Closed Itemsets in Sliding Window in Linear Time (2008)
CHEN, Junbo, ZHOU, Bo, CHEN, Lu, WANG, Xinyu, DING, Yiqun
One of the most well-studied problems in data mining is computing the collection of frequent itemsets in large transactional databases. Since the introduction of the famous Apriori algorithm [14],...
Solver for TCP flows in a network. (2004)
Thesis (M.Sc.) -- University of Ottawa, 2004.