supported by the National Basic Research Program of China (2010CB328300);the National Natural Science Foundation of China (U0635003);"111" Project (B08038)
For an arbitrary (3,L) quasi-cyclic(QC) low-density parity-check (LDPC) code with girth at least ten, a tight lower bound of the consecutive lengths is presented. For an arbitrary length above the bound the correspond...
supported both by the National Natural Science Foundation of China(Grand Nos.40032010-B.40072083 and 49972046);“100 Young Geologists”grant from both Chinese Ministry of Geology and Minera1 Resources and Sichuan Province
The continental volcanic rocks and volcaniclastic sedimentary conglomerates of the Cangshuipu Formation occur well in Yiyang of Hunan Province, consisting of a wedge-shaped succession of Neoproterozoic strata that ove...
jointly supported by the Ministry of Science and Technology of China for fundamental work(Grant No.2001DEA20020-1);the Natural Science Foundation of China(Grant No.40272015);China Commission on Stratigraphy(research on the stage establishment for China’s main chronostratigraphy).
In the newly revised Regional Chronostrati-graphic (Geochronologic) Scale of China, the original bipar-tite division of the Neoproterozoic is changed to tripartite division. The three 搒ystem?rank chronostratigraphic ...
Let X={X(t), F_t, P_x, t≥0} be a Markov process on some probability space (Ω, F,P), valued in R^d. For fixed ω ∈Ω, set X[0, t] (ω)={x: (?)s∈ [0, t] s.t. X(s, ω)=x}.We say that φ-m( ) is the exact Hausdorff me...
Let D denote a diconnected digraph and D(n, S)denote a connected circular digraph.Suppose CV(D). If D-C is not a diconnected digraph or is a single vertex, then C is called vertex cutset of D. We denote all vertex out...
Determination of the critical value λc of basic contact processes is one of the most attractive open problems. Some lower and upper bounds have been known. A lower bound, λc≥1, was obtained by T. E. Harris in 1974....