LOWER_BOUND

作品数:171被引量:329H指数:8
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相关作者:王强郭涛王洪浩王军虎王永生更多>>
相关机构:西北工业大学东南大学长沙铁道学院广西大学更多>>
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Tight lower bound of consecutive lengths for QC-LDPC codes with girth at least ten被引量:3
《Chinese Science Bulletin》2011年第12期1272-1277,共6页ZHANG GuoHua WANG JuHua LI XueYuan WANG XinMei 
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...
关键词:LDPC码 任意长度 周长 QC 低密度校验码 中国剩余定理 纠错能力 代码 
Zircon SHRIMP U-Pb dating for the Cangshuipu volcanic rocks and its implications for the lower boundary age of the Nanhua strata in South China被引量:57
《Chinese Science Bulletin》2003年第16期1663-1669,共7页WANGJian LIXianhua DUANTaizhong LIUDunyi SONGBiao LIZhongxiong GAOYonghua 
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...
关键词:地质年代  年代测定 火山岩 中国 湖南 楔形 原生代 复理层 元古代 
Lower boundary age of the Nanhua System and the Gucheng glacial stage: Evidence from SHRIMPⅡ dating被引量:39
《Chinese Science Bulletin》2003年第16期1657-1662,共6页YINChongyu LIUDunyi GAOLinzhi WANGziqiang XINGYusheng JIANPing SHIYuruo 
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 ...
关键词:原生代 湖南 冰河期 地层年代 前寒武纪 中国 地质学  年代测定 
The lower bound of exact Hausdorff measure of the sample path for the Markov process
《Chinese Science Bulletin》1995年第5期353-360,共8页张新生 
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...
关键词:HAUSDORFF measure UNIFORMLY ELLIPTIC diffusion symmetric stable processes. 
LOWER BOUND OF CONNECTIVITY IN CIRCULAR GRAPHS
《Chinese Science Bulletin》1991年第18期1579-1579,共1页周永生 李唐芬 
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...
关键词:VERTEX CONNECTED CIRCULAR 
A NEW RESULT ABOUT LOWER BOUND FOR THE CRITICAL VALUE OF BASIC CONTACT PROCESSES
《Chinese Science Bulletin》1984年第4期565-,共1页丁万鼎 朱作宾 戴朝寿 陈安岳 
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....
关键词:ATTRACTIVE BASIC BOUNDS independently 
LOWER BOUND FOR ZEROS OF RIEMANN'S ZETA FUNCTION ON σ=1/2
《Chinese Science Bulletin》1980年第5期374-377,共4页楼世拓 姚琦 
Let T>0 and let N(T) denote the number of zeros of the Riemann’s Zeta function ζ(s) in the region 0≤σ≤1, 0
关键词:RIEMANN CONJUGATE SUBSTITUTE LEMMA 云一 气下 
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