The Application Research of Attached Self-lifting Scaffold in Project

附着升降脚手架作为高层、超高层建筑的外防护架体及施工架体，该架体因其在施工中具有良好的优越性能，近十年来正逐步取代传统的悬挑式钢管脚手架。该架体施工技术同时也得到国家建设部的大力推广，目前在全国的高层、超高层建筑工程中正被广泛地使用，并有逐年增加的趋势。本文主要通过以下三大部分内容对附着升降脚手架在工程施工全过程的应用进行具体的研究： （一）对附着升降脚手架的背景、发展、使用情况全面介绍，明确研究的目的和意义，确定研究的方法及研究内容。 （二）阐述附着升降脚手架的施工原理及相关使用规定，并就施工质量、施工安全、施工成本、施工工期等方面应用研究、对比分析来说明附着升降脚手架与传统悬挑脚手架区...As the external protective frame and construction frame for high-rise and super high-rise buildings, attached self-lifting scaffold has high performance in construction and replaced traditional overhanging steel pipe scaffold step by step in recent ten years. The scaffold construction technique was energetically generalized by State Ministry of Construction. It is used extensively in high-rise and...学位：工程硕士院系专业：建筑与土木工程学院_工程硕士(建筑与土木工程)学号：X201025001

微信支付现状及风险防范探析

随着互联网金融的飞速发展,各种第三方电子支付平台也渐渐为人们熟知和运用.其中微信支付近年来应用愈加广泛,深受广大商家和消费者喜爱.然而微信支付在提供快捷高效的服务同时,也存在着监管法规缺失、财产安全保护不足等风险.据此,针对这些风险提出相应的防范对策,促使微信支付更好地保护金融消费者权益

Academics: Shen Congwen as More Than a Novelist ——Academic Preparation by Shen Congwen Before 1949

沈从文既是一位著名作家，又是成就卓著的文物学家，当人们把关注的焦点和重心放在小说家沈从文身上时，却忽略了作为一个学者的沈从文在学术上的贡献，本文试图探寻1949年之前沈从文的学术积累和学术准备，从而认识沈从文学术成就的来源，进而展现一个作家之外的更丰富更全面的学者沈从文。 本文第一章主要分析沈从文进城之前的早期学术知识积累。私塾教育使沈从文接受了大量的传统文化知识，并获得了历史的思维方法，军旅生活让沈从文在接受知识的同时开始接触中国古代文物及相关知识，同时获得了最初的思想与学术自觉。 本文第二章主要讲述二三十年代沈从文的学术准备。沈从文在北大自由开放的学术氛围和文化环境下对知识产生浓厚兴趣...Shen Congwen is a famous writer and outstanding specialist in relics. While people are focusing their mind on Shen Congwen as a novelist, they have neglected his contribution to academics as a scholar. This paper is an attempt to discover Shen Congwen’s academic accumulation and preparation before 1949 in order to recognize the origin of his academic achievement, which serves the purpose of demon...学位：文学硕士院系专业：人文学院中文系_中国现当代文学学号：1022006115007

消费者角度的展示性包装设计思考

包装的展示性是包装的消费功能和社会功能中重要的组成部分,也是消费者选择、购买商品的关键一环,因此包装的展示性在整体包装规划中显得至关重要。本文从消费者的角度出发,通过论述包装的展示性功能在消费和使用过程中的体现,从消费心理、用户体验、可持续性的三个角度论述了满足展示性功能的包装在设计中需要考量的问题,并通过案例分析找寻实现包装展示功能的更多设计角度

美国税源管理经验

随着经济全球化步伐的不断加快,来华跨国公司的数量和规模也不断扩大。如何有效地对跨国公司进行税源管理,成为我国税务部门面临的一个现实问题

Theoretical Study on the Electronic Spectra of cis-HOOOH and trans-HOOOH

用密度泛函方法(DFT)和全活化空间自洽场方法(CASSCF)以及耦合簇理论(CCSD)优化了反式和顺式HOOOH的平衡几何构型,用DFT计算了HOOOH顺反异构化反应的势能曲线和谐振动频率.用含时密度泛函理论(TD-DFT)和二阶全活化空间微扰理论(CASPT2)计算了反式和顺式HOOOH垂直激发能.计算结果表明:(1)反式异构体比顺式异构体稳定;(2)两种稳定构型的异构化反应有两种路径;(3)对于垂直跃迁能最低的单态和叁态,反式的垂直跃迁能比顺式的低;(4)在单激发态中,CASPT2方法预测的顺式HOOOH寿命最长的激发态为21A″,其跃迁能是167.43nm,寿命为1.44×10-5s;反式HOOOH寿命最长的激发态为21A,其跃迁能是165.52nm,寿命为2.07×10-5s.Equilibrium geometries of cis-HOOOH and trans-HOOOH have been investigated using the density functional theory (DFT), complete active space self-consistent-field (CASSCF), and coupled cluster with single and double replacement (CCSD) approaches. The harmonic vibrational frequencies on the optimized geometries were calculated using the DFT theory. The potential energy curve of the isomerization between the trans-HOOOH and cis-HOOOH was obtained by DFT calculations. Time-dependent density functional theory (TD-DFT) and complete active space perturbation theory of second order (CASPT2) calculations have been performed to obtain the vertical excitation energies of selected low-lying singlet and triplet excited states. Computed results show that: (1) trans-isomer is more stable than cis-isomer; (2) there are two pathways of the conversion between the trans-HOOOH and cis-HOOOH; (3) the vertical excitation energies of the lowest singlet and triplet excited states in trans-HOOOH are lower than those in cis-isomer; (4) in the singlet excited states, 21A state in trans-HOOOH and 21A″ state in cis-HOOOH have the longest lifetimes of 2.07×10-5 s and 1.44×10-5 s with the excitation energies of 165.52 and 167.43 nm, respectively.国家自然科学基金(20473062,20233020,20021002,20173042);; 厦门大学固体表面物理化学国家重点实验室开放课题基金(200306);; 河南省自然科学基金(0311011200,200510475012)资助项

皮肤低阻点及其循径分布特征的微机检测 Ⅰ.测试方法可靠性的研究

皮肤阻抗能否作为检测经络循行路线的一个客观指标,是多年来人们一直在研究的一个问题。虽然国内外都已做了不少的工作,但意见仍然比较分歧。其中一个原因,就是对测试方法还缺乏充分的论证。针对目前皮肤阻抗研究工作中存在的问题,1987年,我们曾对测试方法作了一些重要

Structure and Electronic Spectrum of Linear Carbon Chains LiC_(2n)Li Studied with Density Functional Theory

应用密度泛函理论,在B3LYP/6 31G(d)水平上优化得到了线型簇合物LiC2nLi(n=1 ~10,D∞h)的基态平衡几何构型,并计算了它们的谐振动频率.利用含时密度泛函理论,计算了簇合物LiC2nLi的X1∑ +g→11∑ +u跃迁的垂直激发能,以及相应的振子强度.基于计算结果,建立了跃迁能和体系大小n的解析关系式. 同时也计算了体系的第一绝热电离能,讨论了体系的电离能与体系大小n的关系.The geometries and the vibrational frequencies of linear chains LiC_(2n)Li(n=1~10) were investigated by density functional theory at the B3LYP/631G(d) level. Time-dependent density functional theory was used to calculate the vertical transition energies and oscillator strengths of X~1∑~+_g→1~1∑~+_u transitions in LiC_(2n)Li. Based on the present calculations, the explicit analytic expression between the vertical transition energies and n was obtained. Meanwhile, the first adiabaticionization energies werecalculated, and the relationship between the adiabaticionization energiesand nhas also been discussed.固体表面物理化学国家重点实验室(厦门大学)开放课题基金 (200306);; 国家自然科学基金 (20173042);; 河南省自然科学基金 资助项目(0311011200)

Theoretical Study on Structures and Electronic Spectra of Linear Chain Cluster BC_(2n)B (n=1～12)

应用密度泛函理论,在B3LYP/6-31G*水平上优化得到了线性簇合物BC2B(n=1～12,D∞h)的平衡几何构型,并n计算了它们的谐振动频率.在优化平衡几何构型下,通过TD-B3LYP/cc-pvDZ和TD-B3LYP/cc-pvTZ计算,分别得到了n=1～12和n=1～7的X1Σg→11Σ+u电子跃迁的垂直激发能和对应的振子强度.在B3LYP/6-311+G*水平上计算得到+了簇合物BC2B(n=1～12,D∞h)的电离能.基于计算结果,导出了BC2B体系X1Σg→11Σ+u电子跃迁能以及第一电离能+nn与体系大小n的解析表达式.Using density functional theory, the geometries and the vibrational frequencies of linear chain BC2 B (n=1～12, D∞h) have been investigated at the B3LYP/6-31G* level. Time-dependent density func- n tional theory (TD-DFT) has been used to calculate the vertical transition energies and oscillator strengths for X1Σg →11Σ+u transitions of BC2 B with the cc-pvTZ and cc-pvDZ basis sets. At the B3LYP/6-311+G* + n level, the single-point energies of the clusters have been calculated in order to determine the first ionization energies. On the basis of present calculations, the explicit expressions for the size dependence of the excita- tion energy, the first adiabatic ionization energies (AIE) and vertical ionization energies (VIE) in linear car- bon chains were suggested.厦门大学固体表面物理化学国家重点实验室开放课题基金;; 国家自然科学基金;; 河南省自然科学基金(Nos. 20173042; 20233020; 20021002;0311011200)资助项目

Structure and Electronic Spectrum of Linear Carbon Chain PC_(2n)P Studied with DFT

应用密度泛函理论,在B3LYP/6-31G**和B3LYP/6-311G**水平上优化得到了线型簇合物PC2nP(n=1-10)的基态平衡几何构型,计算了它们的谐振动频率.在基态平衡构型下,利用含时密度泛函理论,计算得到了簇合物PC2nP(n=1-10)的垂直激发能和相应的振子强度,导出了激发能与体系大小n的解析关系式.The geometries and the vibrational frequencies of linear carbon chain PC_ 2nP (n=1-10) were investigated by density functional theory(DFT) at the B3LYP/6-31G ** and B3LYP/6-311G ** levels. Time-dependent density functional theory (TD-DFT) was employed to calculate the vertical transition energies and oscillator strengths. On the basis of present calculations, the explicit expressions for the size dependence of the excitation energy in linear carbon chain was suggested.ThisresearchwassupportedbyStateKeyLaboratoryforPhysicalChemistryofSolidSurfaces(XiamenUniversity)(200306),andNaturalScienceFoundationofChina(20173042,20233020)