Investigation of carbon-13 nuclear magnetic resonance spectra-structure correlation based on novel atomic distance-edge (ADE) vector

A set of novel graph-theoretical parameters,called the atomic distance-edge (ADE) vector,was developed.Based on the connecting C-C bond number between central carbon atom and the other ones,various carbon atoms of alkanes were classified as four types,i.e.,type 1,2,3 and 4 for primary,secondary,ternary and quaternary carbon,respectively; and then four regression equations were obtained to link carbon-13 chemical shift (CS) of each type of atoms.Furthermore,these regression models were used to predict the carbon-13 nuclear magnetic resonance spectra of alkanes and it was found that the estimated CS were in agreement with the experimental results.     

基于ADE的IFC到CityGML层次转换模型

新型城市化建设和管理过程中,借助建筑信息模型(building information modeling, BIM)与地理信息系统(geographic information system, GIS)的数据集成,不但能实现建筑物的精细化表达,而且室外信息得以兼顾,实现空间分析及室内外一体化表达。但BIM与GIS两种不同的数据格式无法直接实现数据的互通。为此,首先分析了模型IFC和CityGML在文档形式等方面的差异,并实现了多个简单建筑物IFC模型到CityGML3.0 LOD2、LOD3的转换。其次,针对上述数据集成实验中语义丢失问题,扩展GIS的CityGML3.0数据格式,提出CityGML B-Con扩展模型,完善IFC到CityGML3.0的一对一映射关系。最后,实现多个不同复杂程度建筑物IFC模型到CityGML B-Con扩展模型的转换。实验结果表明,利用CityGML B-Con模型能实现BIM与GIS的数据集成。宏观层面来说,能够增强转换后建筑物外观的细节程度,微观层面而言,BuildingConstructiveElement和BuildingInstallati...     

建筑设计企业智力资本与企业竞争优势实证分析

智力资本在建筑设计企业价值创造中的作用日益突出,正逐渐成为其创建持续竞争优势的核心资源.笔者基于现实调研访谈,总结和甄别了中国环境下建筑设计企业智力资本的内涵要素,从系统视角解析了其与企业竞争优势之间的内在关联,并运用统计分析方法对浙江省168家建筑设计企业进行实证研究,结果表明智力资本与企业竞争优势存在较显著的正相关关系.     

Splitting Mixed Groups of Finite Torsion-Free Rank

Abstract

First, we give a necessary and sufficient condition for torsion-free finite rank subgroups of arbitrary abelian groups to be purifiable. An abelian group G is said to be a strongly ADE decomposable group if there exists a purifiable T(G)-high subgroup of G. We use a previous result to characterize ADE decomposable groups of finite torsion-free rank. Finally, in an extreme case of strongly ADE decomposable groups, we give a necessary and sufficient condition for abelian groups of finite torsion-free rank to be splitting.     

From local to global in F-theory model building

When locally engineering F-theory models some D7$D7$-branes for the gauge group factors are specified and matter is localized on the intersection curves of the compact parts of the world-volumes. In this note, we discuss to what extent one can draw conclusions about F-theory models by just restricting the attention locally to a particular seven-brane. Globally, the possible D7$D7$-branes are not independent from each other and the (compact part of the) D7$D7$-brane can have unavoidable intrinsic singularities. Many special intersecting loci which were not chosen by hand occur inevitably, notably codimension-three loci which are not   intersections of matter curves. We describe these complications specifically in a global SU(5)$SU\left(5\right)$ model and also their impact on the tadpole cancellation condition.     

Deformation of a singularity of type E8 and Mordell‐Weil lattices in characteristic 2

In this paper, we study the Mordell‐Weil lattices of the family of elliptic surfaces which is arising from the E₈⁴ singularity, one of the ADE singularities in characteristic 2. And we construct a subfamily of the universal family of supersingular K 3 surfaces in characteristic 2 as an application (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)     

金属介质在时域有限差分中的几种处理方法

金属在“超颖物质”中有重要应用，分析和仿真金属介质很有意义. 对比了时域有限差分(FDTD)中金属介质的三种计算方法：ADE(Auxiliary Differential Equation), PLRC(Piecewise Linear Recursive Convolution) 和Sakoda提出的方法. 通过数值验证，发现ADE和PLRC的数值结果完全相同. Sakoda的方法在计算卷积时采用台阶近似，有一定误差.改进Sakoda方法的卷积计算后，结果与其他两种方法完全相同. 关键词： 超颖物质 金属 FDTD ADE PLRC     

ADE7753在智能电控系统中的应用

本文详细介绍了ADE7753的技术参数及设计要点，并在此基础上介绍了一种智能电控管理系统硬件平台．该平台从系统的设计应用出发，以实用、够用为设计原则，满足了当前用电管理系统设计的各种要求，几乎能实现当前预付费电表所要求的各项功能．而且该平台可扩充性强，为以后的设计留有余地。     

Matrix factorizations and representations of quivers II: Type ADE case

We study a triangulated category of graded matrix factorizations for a polynomial of type ADE. We show that it is equivalent to the derived category of finitely generated modules over the path algebra of the corresponding Dynkin quiver. Also, we discuss a special stability condition for the triangulated category in the sense of T. Bridgeland, which is naturally defined by the grading.     

Unsplit-Field PML Algorithm for Truncating Nonlinear FDTD Domains

In this paper, unsplit-field Perfectly Matched Layer (PML) formulations are presented for truncating nonlinear dispersive Finite Difference Time Domain (FDTD) grids. The proposed scheme is based on incorporating the nonlinear Z-transform FDTD algorithm into the Auxiliary Differential Equation PML (ADE-PML) formulations. Numerical example carried out in one dimensional domain which includes Lorentz dispersion as well as Kerr and Raman nonlinearities is included to show the validity of the formulations.