数字实时全息用于孔洞夹杂物的试验研究

将数字实时全息应用于不同孔间距孔洞夹杂物的实验研究,采用计算机数字再现,得到孔间干涉应变场分布的数字全息干涉条纹图.通过对孔洞干涉的条纹级数、形状和分布情况的分析,证明了数字实时全息方法良好的适用性、重复性和直观可比性.     

激光全息照相实验计算机辅助处理的研究

为在激光全息照相实验中有效地开展全息干涉计量的实验内容，建立了一套基于图像处理技术的计算机辅助处理系统，本系统应用图形显示技术，使计算机的显示器在显示操作界面的同时也显示所采集的图像，编制了用于全息干涉等值线条纹图的实时处理软件，包括条纹的采取、存储、二值化和细化等功能，针对离面位移的处理结果表明该系统具有实时、准确等优点，可以在全息照相实验中推广使用。     

频闪全息图的分析技术

本文讨论了频闪—时均法、宽脉冲法判别频闪全息干涉图的零级条纹的技术,从条纹函数理论出发,提出了实时频闪全息的零级条纹判别技术和条纹漂移计量术两种新的频闪全息分析技术。这两项技术简单实用,解决了频闪全息图判别零级条纹的困难、同时消除了实时全息原始条纹对定量分析的影响。     

多重全息图再现像的衍射效率

通过对一张全息底片上记录多重全息图的理论研究和实验验证，提出在一张全息底片上记录多幅全息图时，干涉条纹的互相叠加和调制是较大地降低多幅全息图中干涉条纹较疏的全息图衍射效率的关键因素。     

双参考光相移全息干涉计量

本文描述了一种性能优良的条纹分析系统.该系统将相移技术应用于全息干涉计量中,能自动、快速、准确地获得干涉图的相位场.分析一幅条纹图(256×256×8bit)仅需2分钟,重复精度可达±5°.     

PCB干涉条纹图像处理的研究

对某一航空PCB电路板的激光全息干涉条纹的处理 ,采用Delphi、VC、Matlab对干涉条纹进行数字化处理 ,主要采用的是条纹中心技术 ,为光学干涉技术的条纹处理提供可靠的方法 ,同时可以获取可靠的光学实验数据     

光载波:光波相位调制的原理

本文提出了一种图像调制原理,即用一族密条纹调制另一幅条纹图,使其适于光学处理,称为光载波,并介绍了它在条纹图倍增中的应用。这是一个对光测力学中各种干涉条纹都适用的普遍方法。     

基于MATLAB的计算全息干涉图仿真

介绍了光学全息干涉图的计算机仿真实现算法,给出了M ATLAB平台上球面波的计算全息干涉图仿真结果,并探讨了不同的实现手段.提供了制作计算全息干涉图的新手段,较传统方法实现更加便捷.     

实时激光全息干涉法测量液相扩散系数

为研究液相扩散的作用，介绍了一种测量液相扩散系数的激光实时全息干涉系统，利用该系统实时记录液液两相传质的浓度场分布全息图，得到清晰表征浓度场分布的实时全息干涉条纹图；利用全息干涉原理及相应的数学关系处理干涉条纹，得到液相扩散系数，作者首先用已有文献值的KCl水溶液在298．15K下的扩散系数，验证了实验系统的可靠性，在此基础上，进一步测量了坑坏血酸水溶液在298．15K下的液相扩散系数，也进行了测量方法的误差分析,该方法为建立新的液液传质理论提供一定的实验依据，且有利于从微观角度认识液液界面和传质特性。     

全息光学元件空间频率的计算

本文根据记录介质内三维干涉条纹的空间频率矢量,推导了全息光学元件空间频率的计算式,讨论了全息光学元件空间频率分布和角色散分布,提供了几种参数的选择要求.     

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.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

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-