一种支持建筑群组相似模式检索的变分图卷积自编码模型

针对当前建筑群组相似模式检索中空间域和谱域相似度量方法的模型泛化能力较弱,且空间信息利用不足的问题,本文提出了一种基于变分图卷积自编码器的相似检索模型。首先,利用最小生成树构建建筑群组图数据,并将建筑物描述特征嵌入图节点中,实现建筑群组模式的定量化表达;其次,在变分图卷积自编码器重参数化模块中,加入四维超混沌系统与高斯分布融合生成的混合噪声,通过增加采样的随机性来提高模型的泛化能力;然后利用图卷积和池化代替全连接层以保留更多的空间信息,并对低维特征编码进行处理,获得建筑群组的模式特征编码;最后,利用余弦距离来获得待检索建筑群组与模式编码库中建筑群组之间的相似度,从而实现建筑群组模式的相似检索。实验结果表明,该模型能够有效提取建筑群组的模式特征,通过无监督学习实现端到端的建筑群组相似模式检索,为建筑群组模式的自动分类与相似检索提供了新的思路和方法。

街道的回归——杭荟城艺术街区设计

为留存原有空间记忆,杭荟城艺术街区通过建筑布局、空间组织及立面语言表达再现建筑群组的“街道感”,以保持街道活力,通过对节点空间的塑造进一步拓展街道作为公共空间的可能性,以应对城市的有机更新。

Weighting indicators of building energy efficiency assessment taking account of experts' priority

Analytic hierarchy process(Group AHP) is combined with two different methods of assigning experts' priority to weight indicators in building energy efficiency assessment.One is to assign the experts' priority averagely,and the other is to use cluster analysis to assign experts' priority.The results show that,1) Different expert's priority assigns result in great different weights of indicators in building energy efficiency assessment,therefore,the method of assigning experts' priority should be taken into account carefully while weighting indicators of building energy efficiency assessment using Group AHP;2) Three indicators are found to be overwhelmingly important in residential building energy efficiency assessment in the hot summer and cold winter zone in China.They are 'Outdoor & indoor shadow','Heating & air-conditioning facilities' and 'Insulation of envelope';3) The method combining cluster analysis with Group AHP to weight indicator of building energy efficiency assessment has the advantage of finding overwhelming important indicator,whereas,some less important indicators have a tendency to be ignored.A useful reference is provided for building energy conservation including policy revision and energy efficient residential building design.

Synthesis and catalytic activity of Ln (III) complexes with an unsymmetrical Schiff base including multi“非汉字符号” C=N—groups

A synthetic method for a new unsymmetrical Schiff base and its Ln(Ⅲ)complexes including multi > C = N — groups is reported. The complexes are characterized byelemental analysis, IR spectra, ~1H and ^(13)C NMR, especially 2D-COSY ~1H, ~1H NMR spectra. Thegeneral formula of the obtained complexes is [Ln_3(TBLY)(NO_3)_3] · nH_2O (Ln = La, n = 3; Ln = Nd,n=5; Ln = Gd, Dy, Yb, Y, n = 7), where TBLY = tetraglycol aldehyde-2,4-dihydroxy benzaldehydebis-lysine Schiff base. In addition, the evidence for existence of > C = CH — NH — group issupported by the AM1 method. The complexes obtained may be used as a catalyst. Conversion rate of80% with the viscosity-average molecular weight 220000 for the polymerization of methyl methacrylate(MMA) without addition of any cocatalyst has been obtained.