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关于法门寺塔基地宫出土银棱盝顶檀香木函的相关问题探讨 被引量:1
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作者 冉万里 《文博》 2016年第2期42-48,共7页
陕西扶风法门寺唐代塔基地宫出土的银棱叠顶檀香木函,是安置佛指舍利的八重宝函的最外一层,但由于发现之时已经朽成碎块,未引起人们的关注。《法门寺珍宝》图录中将其残片首次全面公布。笔者在认真观察和比对之后,对残片上的纹饰题材进... 陕西扶风法门寺唐代塔基地宫出土的银棱叠顶檀香木函,是安置佛指舍利的八重宝函的最外一层,但由于发现之时已经朽成碎块,未引起人们的关注。《法门寺珍宝》图录中将其残片首次全面公布。笔者在认真观察和比对之后,对残片上的纹饰题材进行了综合考证,认为其题材包括梵王及帝释礼佛、药师佛、释迦牟尼说法以及西方净土世界等。 展开更多
关键词 法门寺 塔基地宫 银棱盝檀香木 纹饰 题材
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金属针布不同齿顶形式的比较
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作者 陈海涛 《纺织器材》 1993年第6期24-28,共5页
金属针布的齿顶可分为尖顶、弧顶和平顶3种形式。不同的齿顶形式既体现不同的工艺方法和技术水平,也体现不同的平整度和锋利度。本文对这3种齿顶形式从冲齿误差、制造工艺、齿尖锋利度等方面进行了较详细的分析比较,提出了各自的特点和... 金属针布的齿顶可分为尖顶、弧顶和平顶3种形式。不同的齿顶形式既体现不同的工艺方法和技术水平,也体现不同的平整度和锋利度。本文对这3种齿顶形式从冲齿误差、制造工艺、齿尖锋利度等方面进行了较详细的分析比较,提出了各自的特点和适用对象。为了定量比较,本文对3种不同齿顶情况下的各项冲齿误差作了分析,推导出计算公式。 展开更多
关键词 金属针布 函顶 纺织器材
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Roman Domination Number and Domination Number of a Tree 被引量:1
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作者 SONG Xiao-xin WANG Xiao-feng 《Chinese Quarterly Journal of Mathematics》 CSCD 北大核心 2006年第3期358-367,共10页
A Roman dominating function on a graph G = (V, E) is a function f : V→{0, 1, 2} satisfying the condition that every vertex u for which f(u) = 0 is adjacent to at least one vertex v for which f(v) = 2. The weig... A Roman dominating function on a graph G = (V, E) is a function f : V→{0, 1, 2} satisfying the condition that every vertex u for which f(u) = 0 is adjacent to at least one vertex v for which f(v) = 2. The weight of a Roman dominating function is the value f(V) = Σu∈Vf(u). The minimum weight of a Roman dominating function on a graph G, denoted by γR(G), is called the Roman dominating number of G. In this paper, we will characterize a tree T with γR(T) = γ(T) + 3. 展开更多
关键词 Roman dominating function Roman dominating number dominating number healthy spider wounded spider
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Transverse Vector Vertex Function and Transverse Ward-Takahashi Relations in QED
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作者 HE Han-Xin 《Communications in Theoretical Physics》 SCIE CAS CSCD 2006年第1X期109-112,共4页
The transverse vector vertex function in momentum space in four-dimensional QED is derived in terms of a set of transverse Ward-Takahashi relations for the vector and the axial-vector vertices in the case of massless ... The transverse vector vertex function in momentum space in four-dimensional QED is derived in terms of a set of transverse Ward-Takahashi relations for the vector and the axial-vector vertices in the case of massless fermion. It is demonstrated explicitly that the transverse vector vertex function derived this way to one-loop order leads to the same result as one obtained in perturbation theory. This provides a basic approach to determine the transverse part of basic vertex function from the symmetry relations of the system. 展开更多
关键词 transverse vertex function transverse Ward-Takahashi relations
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Splitting and Restoration of Kondo Peak in a Deformed Molecule Quantum Dot Coupled to Ferromagnetic Electrodes
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作者 王瑞强 蒋开明 《Communications in Theoretical Physics》 SCIE CAS CSCD 2010年第2期370-376,共7页
We adopt the nonequilibrium Green's function method to theoretically study the Kondo effect in a deformed molecule, which is treated as an electron-phonon interaction (EPI) system. The self-energy for phonon part i... We adopt the nonequilibrium Green's function method to theoretically study the Kondo effect in a deformed molecule, which is treated as an electron-phonon interaction (EPI) system. The self-energy for phonon part is calculated in the standard many-body diagrammatic expansion up to the second order in EPI strength. We find that the multiple phonon-assisted Kondo satellites arise besides the usual Kondo resonance. In the antiparallel magnetic configuration the splitting of main Kondo peak and phonon-assisted satellites only happen for asymmetrical dot-lead couplings, but it is free from the symmetry for the parallel magnetic configuration. The EPI strength and vibrational frequency can enhance the spin splitting of both main Kondo and satellites. It is shown that the suppressed zero-bias Kondo resonance can be restored by applying an external magnetic field, whose magnitude is dependent on the phononic effect remarkably. Although the asymmetry in tunnel coupling has no contribution to the restoration of spin splitting of Kondo peak, it can shrink the external field needed to switch tunneling magnetoresistance ratio between large negative dip and large positive peak. 展开更多
关键词 Kondo splitting molecular electronics magnetoresistance effect electron-phonon interaction
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A novel scale-free network model based on clique growth 被引量:1
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作者 王波 杨旭华 王万良 《Journal of Central South University》 SCIE EI CAS 2009年第3期474-477,共4页
A novel scale-flee network model based on clique (complete subgraph of random size) growth and preferential attachment was proposed. The simulations of this model were carried out. And the necessity of two evolving ... A novel scale-flee network model based on clique (complete subgraph of random size) growth and preferential attachment was proposed. The simulations of this model were carried out. And the necessity of two evolving mechanisms of the model was verified. According to the mean-field theory, the degree distribution of this model was analyzed and computed. The degree distribution function of vertices of the generating network P(d) is 2m^2m1^-3(d-m1 + 1)^-3, where m and m1 denote the number of the new adding edges and the vertex number of the cliques respectively, d is the degree of the vertex, while one of cliques P(k) is 2m^2Ek^-3, where k is the degree of the clique. The simulated and analytical results show that both the degree distributions of vertices and cliques follow the scale-flee power-law distribution. The scale-free property of this model disappears in the absence of any one of the evolving mechanisms. Moreover, the randomicity of this model increases with the increment of the vertex number of the cliques. 展开更多
关键词 SCALE-FREE clique growth preferential attachment degree distribution
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L(d_1,d_2,...,d_t)-Number λ(C_n;d_1,d_2,...,d_t) of Cycles
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作者 高振滨 张晓东 《Journal of Mathematical Research and Exposition》 CSCD 2009年第4期682-686,共5页
An L(d0,d2,...,dt)-labeling of a graph G is a function f from its vertex set V(G) to the set {0,1,..., k} for some positive integer k such that If(x) - f(y)l ≥di, if the distance between vertices x and y in G... An L(d0,d2,...,dt)-labeling of a graph G is a function f from its vertex set V(G) to the set {0,1,..., k} for some positive integer k such that If(x) - f(y)l ≥di, if the distance between vertices x and y in G is equal to i for i = 1,2,...,t. The L(d1,d2,...,dt)-number λ(G;d1,d2,... ,dt) of G is the smallest integer number k such that G has an L(d1,d2,...,dr)- labeling with max{f (x)|x ∈ V(G)} = k. In this paper, we obtain the exact values for λ(Cn; 2, 2, 1) and λ(Cn; 3, 2, 1), and present lower and upper bounds for λ(Cn; 2,..., 2, 1,..., 1) 展开更多
关键词 CYCLE LABELING L(d1 d2 ... dt)-labeling λ(G d1 d2 ... dt)-number.
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