NSRL二期工程中束流测量系统的改造

介绍了NSRL二期工程中束流测量系统的改造，包括DCCT测量系统、闭轨测量系统、基于束流准直系统、工作点测量系统、光位置测量系统和200MeV直线加速器能谱测量系统．这些测量系统为合肥光源的运行调试和机器研究提供了有效的手段．另外，还给出了这些系统的应用和测量结果．     

微波计算机辅助测量系统及阻抗参数的测量

将计算机技术应用于微波测量中，对常用的测量线系统进行改造，使之成为微波参数计算机辅助测量系统，该系统实现了测量的自动化、提高了测试精度。用该系统进行阻抗参数测试，证明它是一个性能稳定可靠、快捷方便的测量系统。     

探究非正交系坐标测量系统原理及进展①

非正交坐标测量系统是近些年来研究出来的比较先进的一种专业测量系统，该系统在工业测量领域和计量领域得到了广泛应用。非正交坐标测量秉统有多种分类，通过非正交坐标测量系统能够有效实现对对物体三雉坐标值的确定。非正交坐标测量系统的测量方法多种多样，该文将结合非正交坐标测量系统的测量方法来重点探讨该系统的测量原理。     

单片机在测量人造金刚石结晶强度中的应用

采用单片机技术开发了一种微机自动测量系统，用于测量人造金刚石的结晶强度．设计出的测量系统具有体积小、重量轻、省时、省力等特点，并可对测量结果存储和显示．介绍了有关硬件和软件．设计量程５０ｋｇ时，其测量偏差为０．５４％，测量效果比较满意．     

激光束斑半宽度测量的新方法

本文介绍一种激光束斑半宽度测量的新方法，其依据是推广的朗奇法，并详尽讨论该测量系统组成．该测量系统可通过计算机控制，与传统测量方法相比，具有简便易行、测量精确、通用性强的特点．这种测量方法已成功地应用于氦氖激光束斑测量．     

测量晶体相位延迟量的λ/4波片法研究

在对晶体材料的光学性质的研究和对晶体器件延迟量的测量中，常因光源起伏影响测量精度，出现较大的测量误差．如果避开光源强度的起伏，将会使测量系统大大简化，同时使测量精度得以提高，减少测量误差．文章利用偏振光偏振态的变化，搭建一套测量系统．利用角度测量替代光强的直接测量，可比较精确地测量晶体的延迟量．由于该测量系统不需直接测量光强，避免了光强不稳定对测量结果的影响．与传统测量方法相比，该测量系统具有构造简单，不受光源起伏影响，以及测量精度高等特点．     

用于微波天线的三维面形测量技术

在三维立体视觉测量原理的基础上，建立了用于微波天线面形测量的三维视觉测量系统，分析了该测量系统优于其他测量系统的主要优点，给出了测量原理，介绍了系统组成及其功能，通过对微波天线的面形测量，验证其可行性，对空间点位进行多次重复测量表明：x,y方向的测量标准差优于0．1mm,z方向的测量标准差优于0．18mm，满足微波天线的面形测量要求。     

大型复杂结构件几何参量在线精密测量系统搭建及工程应用

针对大型复杂结构件几何参量在线精密测量的技术难题，本文开展了基于多轴联动激光扫描和结构光三目视觉摄影的尺寸测量技术研究；通过结构方案设计、算法研究、软件开发及系统搭建，研制了针对不同测量对象的多套非接触式几何尺寸测量系统.测试校准结果表明，激光扫描测量系统在15 m距离的测量不确定度为2.656 mm,结构光三目视觉测量系统在7 m距离的测量结果不确定度为1.552 mm,均满足大型结构件的测量范围及精度要求.在此基础上，本文采用两种类型的测量系统同时对生产现场大型热态锻件外圆直径参数进行在线测量，重复测量误差均小于±4 mm,测量结果表现出良好的一致性.研究结果为大型结构件表面和内部几何尺寸的高精度在线测量提供了有效的技术方法和装备.     

多路法激光跟踪干涉测量系统的研究

叙述了测量系统的工作原理，给出了测量一个运动物体三维坐标的计算方法，指出测量系统要进行自标定和测量，运动物体的“不同动点数”应大于9，简要分析了测量系统的组成，各自的工作原理，测量系统的误差来源与误差传递，最后通过实验验证了测量的可行性，得出测量速度为0．5m/s，测量不确定度为0.062mm。对于提高系统精度和可靠性提供了可靠的方向和有益的建议。     

基于机器视觉的电缆绝缘护套厚度测量系统的研究

传统的电缆绝缘护套厚度测量方法存在繁琐、速度慢、受人为因素影响大等缺点，本文针对这些缺点提出了一种新测量方法，设计了一套基于机器视觉的电线电缆绝缘护套测量系统。文中介绍了测量系统的组成，通过试验证明测量系统的测量精度符合标准要求，而且具有速度快、操作简便、精度高等优点，对提高工作效率和检测精度有重要的意义。     

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