利用结构分析理论培养高职学生的英语写作技能

目前,从高职英语教学的现状看,学生语言写作能力差的问题一直没有解决,英语教学的质量远远不能适应高职教育培养目标的要求。因此,高职英语写作教学迫切需要建立起适应高职教育特色的教学模式。本文运用结构分析理论,主要从词语、句子和篇章等结构方面阐述了如何培养高职学生的英语写作技能。

拉门塔静风荷载试验与理论计算对比分析

利用电阻应变片的受力特性,通过静力加载试验分析目前某些地区使用的拉门塔结构内力的变化值。使用ANSYS结构分析软件建立该铁塔的理论简化模型,与试验分析采用相同的加载点和加载方式,模拟试验分析所受的外部环境,通过空间杆件及结点的简化和组合,尽可能使理论分析与现场试验处于相同的受力环境,比较分析理论计算与试验结果数据的差异,验证理论分析的可靠性,以改进对该类型铁塔理论建模方式,同时为其他塔型的建模提供参考。

结构社会学和网络分析

本书中的这些篇章,尽管它们各不相同,却代表了近年来在英美首先随着网络分析一起发展起来的结构分析理论中各种具有代表性的观点。然而,却有着几种不同类型的结构分析理论,它们与包括在本书中的代表着社会学方向的结构分析大为不同。马克思的学说——尤其是众所周知的“后马克思”学说——就是一种结构理论,它解释了社会生活的各个方面,宗教、政治、家庭、社会习俗等等;用马克思的术语,即经济基础,它明确地概括为生产力和生产关系,并由此决定阶级结构。第二类是同马克思完全相抵触的帕森斯的结构功能主义。帕森斯把此种客观状况,即人们之间的阶级差别、相互关系和相互作用,归结为一种在某一社会中大多数人所接受和遵循、并统治着社会生活和制度的价值。

社会结构理论与文化自信的哲学底蕴

社会结构理论是马克思主义理论的重要内容之一。马克思主义社会结构理论包括社会基本矛盾理论和政治、经济、文化等在内的社会结构分析理论。从马克思主义中国化和马克思主义发展史的角度看，中国共产党人在运用马克思主义社会基本矛盾学说分析和解决中国问题的同时，极大地丰富和创新了马克思主义社会结构分析理论，由新民主主义社会结构三分理论到当代中国社会结构五分理论，反映了中国共产党的理论与实践创新，反映了中国共产党领导人民建设国家，改善民生的理论与实践活动的深化及取得的成果。

地下管道动力可靠性分析的降维计算方法

地下管道是城市重要的基础工程之一,对其进行的地震作用下的可靠性分析是地下管道安全性的重要指标.但传统的可靠性分析只是针对单根管道进行分析与实际情况存在一定差异.本文采用系统可靠性理论对地震作用下的地下管线动力可靠性进行分析,并针对系统可靠性计算量大的难题,引入了PNET法(point evaluation technique)与谱系聚类分析法两种降维方法,在保证精度的同时大大提高了计算效率,使对地下管线的系统可靠性分析达到实用化程度.最后还结合实例进行了系统可靠性计算并对两种降维方法做了比较分析,提出了相应改进措施.

箱梁与缆索承重桥梁理论2020年度研究进展

在以大跨、轻质、高强为标志的现代桥梁结构中,箱梁与缆索承重桥梁结构是两大重要的分支。笔者曾系统综述其相关理论的2019年研究进展,具体包括波形钢腹板箱梁理论、传统箱梁空间分析理论、多塔悬索桥缆鞍相互作用、缆索承重桥梁极限承载力及UHPC技术在缆索承重桥梁中的应用5个方面,为了及时掌握相关的研究动态,对2020年关于以上内容的研究进行梳理与总结,并增加了缆索承重桥梁体系的最新发展。研究结果表明,结构体系的持续创新为精细化箱梁与缆索承重桥梁理论的不断深化提供了契机。

德国(欧洲)飞艇和高空平台研究与发展

本文介绍了德国(欧洲)飞艇发展概况,从其诞生到二战前的鼎盛,二战后的低潮,以及现代飞艇的发展变化.重点介绍了Lotte、Zeppe lin NT、C argo lifter研发与所取得的重要技术成就.并概要介绍了欧洲高空长期驻留平台研究计划.本文从大型复杂结构科学角度出发,提出了对结构分析理论、结构设计研究的挑战和急需开展的相关课题.

英汉会话语篇中话轮沉默的认知解读

本文以英汉会话语篇中的话轮沉默为研究对象,指出传统语用学中会话分析理论与格氏合作原则在解读话轮沉默时存在着自身不足;在此基础上,以Sperber和Wilson(1986)的关联理论为依据,对话轮沉默的含义进行认知语用分析,包括:(1)话轮沉默的信息意向与交际意向;(2)话轮沉默的关联性与语境效果.文章最后指出话轮沉默有效解读需要语用学理论及其他相关知识在关联理论宏观调控下的互补性合作.

考古学方法、考古出土品与古书画鉴定方法论

书画鉴定古已有之,其方法论日益发展和成熟。在各学科交融互补的今天,用理性、实证的思维代替片面的感觉和领悟,用精确的科学性代替模糊性和混沌性,无疑代表了古书画鉴定现代发展的新方向。文章着重阐释古书画鉴定方法论与考古学基本方法、考古出土品之间的关系,并以"视像结构分析理论"为实例,探讨将考古学方法引入古书画鉴定方法论的意义、局限与发展,试图求证不断借鉴考古学方法以及吸收考古发现新成果已经成为古书画鉴定的有效门径之一,并正在成为推动传统的书画鉴定学摆脱历史局限走向现代化的一个重要标志。

MEMS系统级仿真中的一种变截面梁建模方法

根据矩阵结构分析理论和弹性力学理论建立了一种宽度随长度线性变化的变截面线性梁力学模型,采用硬件描述语言实现了其参数化系统级组件。基于该组件进行的系统级仿真结果与有限元仿真结果相比,静态分析和频域分析的最大误差分别为0.75%和0.84%。含变截面悬臂梁的蟹腿式平面微加速度计的系统级仿真结果与有限元仿真结果相比,频域和时域分析的最大误差分别为3.60%和3.65%;系统级时域分析耗时仅为4min,而有限元则为56min,表明在保证较高仿真精度的前提下,系统级仿真速度相比有限元提高了近10倍。

Cluster-Based Content Download and Forwarding Scheme for Highway VANETs

The recent advances in wireless communication technology enable high-speed vehicles to download data from roadside units(RSUs). However, the data download volume of individual vehicle is rather restricted due to high mobility and limited transmission range of vehicles, bringing users poor performance. To address this issue, we exploit the combination of both clustering and carry-and-forward schemes in this paper. Our scheme coordinates the cooperation of multiple infrastructures, cluster formation in the same direction and data forwarding of reverse vehicles to facilitate the target vehicle to download large-size content in dark areas. The process of data dissemination and achievable data download volume are then derived and analyzed theoretically. Finally, we conduct extensive simulations to verify the performance of the proposed scheme. Results show significant benefits of the proposed scheme in terms of increasing data download volume and throughput.

The Extension Methods and Fecision-making Analysis on the Planting Dtructure of Dlope Garmland in Northern Shaanxi

Based on the resent research about the planting structure of slope farmland in northern Shaanxi,in order to increase the native's income,we use the theory of the extension methods to analyze the planting structure of slope farmland,so that we can get the extensive strategy,and put them into use for planting of slope farmland to make the native's income higher.

Methodology for estimating probability of dynamical system's failure for concrete gravity dam

Methodology for the reliability analysis of hydraulic gravity dam is the key technology in current hydropower construction.Reliability analysis for the dynamical dam safety should be divided into two phases:failure mode identification and the calculation of the failure probability.Both of them are studied based on the mathematical statistics and structure reliability theory considering two kinds of uncertainty characters(earthquake variability and material randomness).Firstly,failure mode identification method is established based on the dynamical limit state system and verified through example of Koyna Dam so that the statistical law of progressive failure process in dam body are revealed; Secondly,for the calculation of the failure probability,mathematical model and formula are established according to the characteristics of gravity dam,which include three levels,that is element failure,path failure and system failure.A case study is presented to show the practical application of theoretical method and results of these methods.

Conformations and Structures of Ethoxycarbonyl Isothiocyanate Revealed by Rotational Spectroscopy

The ethoxycarbonyl isothiocyanate has been investigated by using supersonic jet Fourier transform microwave spectroscopy.Two sets of rotational spectra belonging to conformers TCC(with the backbone of C-C-O-C,C-O-C=O,and O-C(=O)-NCS being trans,cis,and cis arranged,respectively)and GCC(gauche,cis,and cis arrangement of the C-C-O-C,C-O-C=O,and O-C(=O)-NCS)have been measured and assigned.The measurements of13C,15N and34S mono-substituted species of the two conformers have also been performed.The comprehensive rotational spectroscopic investigations provide accurate values of rotational constants and14N quadrupole coupling constants,which lead to structural determinations of the two conformers of ethoxycarbonyl isothiocyanate.For conformer TCC,the values of Pcckeep constant upon isotopic substitution,indicating that the heavy atoms of TCC are effectively located in the ab plane.

Reliability analysis of a composite laminate using estimation theory

Composite laminates are made up of composite single-plies sequence. The plies generally have the same fiber and resin and their difference in fiber orientation results in a difference in various laminates' strength. Tsai-Hill failure criterion as a limiting state function to analyze structural reliability of a composite laminate and estimation theory in order to estimate statistical parameters of effective stress were utilized to construct probability box. Finally, we used the Monte Carlo simulation and FERUM software to calculate the upper and lower bounds of probability of failure.

Seismic Response of a Structure under Various Subsoi Models

Three types of the soil-structure interaction are used for structure analysis loaded by seismic effects. An example of the real RC building is used to demonstrate differences in the dynamic response results in the calculation of internal forces and displacements. Variant three options of the soil models were used as a building supporting structure. In the case of soil model A, the soil was modelled by using of equivalent stiffness values, stemming from the theory of a rigid circular disc on an elastic homogeneous half-space. Non-uniformly modelled vertical stiffness of the soil according to the Boussinesq model was used for model B. Both models A and B are characterised by the ＂averaged＂ soil model on the bases of spring constants. Model C was used for the soil better corresponding to its actual composition by the Winkler-Pasternak theory. Model C, where the actual layered soil is considered, is modelled more accurately than for the ＂averaged＂ soil of models A and B. The dynamic response of models operating with ＂averaged＂ values of rigid and soft soil layers is markedly shifted to the conservative smaller values of internal forces. The building response tbr model C in dynamic displacements is significantly higher than for the both models A and B.

架空输电线路环境荷载响应与设计理论的研究

我国地域广阔,气候跨区域变化较大,地形地貌复杂多变,各地区风、雨以及导线覆冰的分布规律千差万别。由于目前环境荷载因素对输电塔线结构的严重破坏频繁发生,造成了巨大的经济损失。因此,有必要建立输电塔线结构环境荷载响应分析理论和进行设计优化,提高其结构设计的规范水准,并加强灾害监测控制。这对减轻环境荷载造成的输电塔线结构的灾害具有不可估量的作用。

东亚地区治理与中美新型大国关系建构

构建中美新型大国关系符合全球治理转型需要并有助于加强东亚地区治理。实现东亚地区治理与建构中美新型大国关系的良性互动,需要在地区治理的体系层面加强制度及规范建构;在过程层面明确议程设定、注重目标达成。在政策结果的体系方面,各国需协调多样化的治理理念,加强中美等大国在地区治理中的领导作用,选择或建立更合时宜的多边合作机制;在政策结果的过程方面限制议程范围,加强目标谈判,提高组织的效率、效力及合法性;以建构中美新型大国关系为路径,实现中美双边关系治理与东亚多边地区治理的动态平衡。