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81.
俞晓霞 《杭州师范学院学报(社会科学版)》2006,28(4):111-116
以王国维对康德、叔本华和席勒美学美育思想的继承和改造为例,从哲学与美学基础、社会文化背景、美育理论核心和美育实施等几个层面对之进行分析和比较,可以看出王国维在大量接受西方美学美育思想尤其是德国美学美育思想影响的同时,又从中国传统思维出发对其作了"中国式"的改造与重构.这对尚处在中国现代美学启蒙时期的近代是难能可贵的. 相似文献
82.
2003年王建成先生出版了《荣辱人生——严嵩话本》这本书,透过正史这层膜,发掘历史的真实,揭开了历史真相的一角。这部书有四个特点:一、观点新。认为严嵩的为人,基本上是正人君子,而陷害他的徐玠,并非正史所说的“良相”。二、风骨硬。作者没有考虑得失利害。而是秉笔直书,敢闯禁区,体现了一个学者应有的风骨。三、创作苦。耗费近二十年精力收集资料和研究写作,才著成此书,吃了不少苦头。四、架构巧。全书只用30多万字,就把严嵩八十多年的人生风云,尽收笔底。 相似文献
83.
Mario Ullrich 《Random Structures and Algorithms》2013,42(4):520-535
We prove that the spectral gap of the Swendsen‐Wang process for the Potts model on graphs with bounded degree is bounded from below by some constant times the spectral gap of any single‐spin dynamics. This implies rapid mixing for the two‐dimensional Potts model at all temperatures above the critical one, as well as rapid mixing at the critical temperature for the Ising model. After this we introduce a modified version of the Swendsen‐Wang algorithm for planar graphs and prove rapid mixing for the two‐dimensional Potts models at all non‐critical temperatures. © 2012 Wiley Periodicals, Inc. Random Struct. Alg., 42, 520–535, 2013 相似文献
84.
Ping-Feng Xu Jianhua Guo Man-Lai Tang 《Journal of computational and graphical statistics》2013,22(1):205-229
In this article, we propose localized implementations of the iterative proportional scaling (IPS) procedure by the strategy of partitioning cliques for computing maximum likelihood estimations in large Gaussian graphical models. We first divide the set of cliques into several nonoverlapping and nonempty blocks, and then adjust clique marginals in each block locally. Thus, high-order matrix operations can be avoided and the IPS procedure is accelerated. We modify the Swendsen–Wang Algorithm and apply the simulated annealing algorithm to find an approximation to the optimal partition which leads to the least complexity. This strategy of partitioning cliques can also speed up the existing IIPS and IHT procedures. Numerical experiments are presented to demonstrate the competitive performance of our new implementations and strategies. 相似文献
85.
《Tetrahedron letters》2019,60(38):151058
Due to the hazardous nature of CH2Cl2, regulatory authorities have imposed restrictions to minimize or even stop its use. It has therefore become imperative to identify environmentally benign solvents to replace it. Here we report on a bio derived solvent, γ-valerolactone, for the incorporation of the first amino acid onto p-alkoxybenzyl alcohol resin in solid-phase peptide synthesis. Satisfactory loading values (by a spectrophotometric method) were achieved. Furthermore, racemization and dipeptide formation were also checked and found to be acceptable. 相似文献
86.
87.
The Swendsen‐Wang (SW) dynamics is a popular Markov chain for sampling from the Gibbs distribution for the ferromagnetic Ising model on a graph G = (V,E). The dynamics is conjectured to converge to equilibrium in O(|V|1/4) steps at any (inverse) temperature β, yet there are few results providing o(|V|) upper bounds. We prove fast convergence of the SW dynamics on general graphs in the tree uniqueness region. In particular, when β < βc(d) where βc(d) denotes the uniqueness/nonuniqueness threshold on infinite d‐regular trees, we prove that the relaxation time (i.e., the inverse spectral gap) of the SW dynamics is Θ(1) on any graph of maximum degree d ≥ 3. Our proof utilizes a monotone version of the SW dynamics which only updates isolated vertices. We establish that this variant of the SW dynamics has mixing time and relaxation time Θ(1) on any graph of maximum degree d for all β < βc(d). Our proof technology can be applied to general monotone Markov chains, including for example the heat‐bath block dynamics, for which we obtain new tight mixing time bounds. 相似文献
88.
Yong Zhang Yonghai Liu Shuai Zhang Lei Shi Wei Wang Hao Li 《Tetrahedron letters》2019,60(22):1463-1466
An acid-promoted 2-component Mannich annulation reaction of readily available acetylbenzaldehydes and secondary amines has been reported. The approach provides a simple and efficient method under mild conditions to synthesize 3-aminoindan-1-one derivatives in moderate to good yields. 相似文献
89.
作为中国当代文坛一个独特的存在,王小波的创作、思想等方面受西方现代文化影响颇深,特别是西班牙著名画家萨尔瓦多·达利的影响.王小波的小说浸透着达利超现实主义精神和历史时空观念理论,在亦真亦幻的梦境书写中体现对权力话语的戏谑和抗辩,具有独特的审美价值. 相似文献
90.
指出了[1]的定理2中的一个错误,推广了[1]中定理1给出的华罗庚-王中烈型不等式,避开控制不等式与动态规划模型等专门工具,改用较为初等的平均值不等式证明之,使改正后的[1]中的定理2成其推论 相似文献