论长大隧道施工快速掘进技术

结合京福客运专线釆用钻爆法施工的赤门隧道工程实例，从掏槽设计、机械配置、精细化管理等方面入手，介绍了实现长大隧道单月掘进270m的方法，实践证明选择优化的掏槽方案、提高钻孔精度、合理资源配置、精细化组织，是实现长大隧道施工快速掘进的主要方法。     

基于图纸终端的公路隧道图纸设计方法与实现

基于图纸终端的公路隧道设计方法，将图形、尺寸标注、文本标注、工程数量表、文字说明和图框作为一个整体设计管理．图形、尺寸标注、文本标注封装成基于尺寸驱动的工程图元，工程数量表封装成基于特征的工程表元，文字说明封装成面向对象的注释块元，工程图元、工程表元、注释块元和图框共同组成图纸单元．根据工程特征将图纸单元分组．利用目录树对图纸单元、图纸组，甚至整套图纸（图纸终端）进行管理，由此实现基于图纸终端的公路隧道图纸的设计和管理．在此基础上，运用VC＋＋6．0开发同济曙光（GeoFBA）公路隧道图纸设计系统（SETDDM）．最后，归纳了基于图纸终端的公路隧道图纸设计方法的优点．     

水下交通隧道的设计与施工

综合论述了水下隧道在穿越江河湖海时所有的优势，介绍了水下交通隧道的设计与施工概况，讨论了水下隧道勘察设计、施工的几项关键技术，详细介绍了水下隧道施工的常用方法。     

基于PC机的数字程控分频器卡的研究与设计

本文以微型计算机为基础，提出了基于ＰＣ机的数字程控分频器卡的设计思想，阐述了硬件、软件设计的具体方法，应用这一思想和方法设计并实现了基于ＰＣ机的数字程控分频器卡。     

基于GD-DNN模型的岩爆烈度等级预测方法与应用

岩爆是深埋隧道施工过程中开挖时形成临空面，引起能量突然释放的现象，轻则岩片剥落，重则造成人员伤亡和财产损失，其危害程度取决于岩爆烈度等级，因此岩爆烈度等级预测是急需解决的难题之一。本文针对单一指标预测法预测效果不理想的问题，首先设计并实现了综合指标法和针对多分类问题的分类器，其次提出并建立了基于梯度下降(Gradient Descent)算法优化深度神经网络(Deep Neural Network)的GD-DNN岩爆烈度等级预测模型。实验结果表明：GD-DNN模型预测的准确率达到95.8%，相比机器学习算法K最近邻(K-nearest neighbor，KNN)、支持向量机（support vector machine，SVM)和深度学习算法DNN分别提高了45.8%、38.7%和8.3%，同时在精确率、召回率和??1值三项指标上均优于其他模型。最后在秦岭隧道、大相岭隧道、通渝隧道和马路坪矿井4个实际工程中检验模型的预测效果，检验结果证明GD-DNN模型能够精准预测岩爆烈度等级，研究成果可应用于深埋隧道工程中。     

铁路隧道风险评估指标体系及方法初论

当前,随着我国高速铁路隧道建设进程地不断深入,这无疑会对铁路隧道工程的设计、投资以及现场施工等方面带来巨大的挑战。如果在上述任何一个环节上出现了问题或是考虑不完全,均会在铁路隧道设计施工、规划以及实际运营之中出现对社会和国家造成不必要的重大损伤与社会负面影响。基于此,对铁路隧道风险进行评估就显得尤为重要。本文就是对铁路隧道风险评估指标体系的构建机进行了探究,旨在为铁路隧道的风险评估提供一种科学的方法与策略。     

三维激光扫描技术在高速公路现役隧道变形监测上的应用

该文分析了现有隧道变形监测方法存在的问题与不足,设计了将三维激光扫描技术应用于现役高速公路隧道检测的数据采集方案,实现了隧道内测控条件下的激光扫描快速作业与多测站点云高精度拼接方法。探索出一套从三维激光扫描点云中提取横/纵断面、与隧道断面设计对比、多期点云数据全断面变形检测的数据处理与分析方法,并在此基础上实现了病害与变形的关联检查分析。     

隧道照明设备系统的设计与实现

隧道照明系统的安全运行是高速公路安全运营的重要保证,为了提高高速公路隧道照明系统的安全性、稳定性及节能性,该文设计了一套基于Zig Bee网络的LED隧道照明系统。利用Zig Bee无限网络构建可动态调节LED亮度的智能控制系统。在系统的控制方面采用模糊控制算法,依据隧道内亮度及车流量等变量值,动态调整隧道内LED照明灯的亮度。同时开发上位机的监控,对系统工作状态进行实时监控,保证系统安全运行。     

合肥市方兴湖隧道工程总体设计

方兴湖隧道为安徽省首座城市湖底隧道，属城市快速路隧道。该文主要介绍了方兴湖隧道总体设计的思路和部分技术指标，包括隧道纵断面设计、交通组织、排水设计及管线布置等。     

IP V6校园网的过渡技术

探讨了从IPV4到IPV6过渡常用的3种技术：双协议栈机制、翻译转换机制和隧道机翻的实现思想以及3种技术在校园网的应用。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that