汽车前照灯检测仪的模糊控制自动跟踪光轴

通过对汽车前照灯检测仪光轴自动跟踪过程的研究,提出了利用模糊控制技术控制前照灯检测仪光轴自动跟踪过程,从而加快了汽车前照灯检测仪检测速度,提高了汽车前照灯检测仪测量准确性,消除了汽车前照灯检测仪光轴自动跟踪过程可能产生的振荡,使前照灯检测仪光轴自动跟踪过程更加迅速准确。     

混凝土超声波检测仪工作原理及应用研究

混凝土超声波检测仪可以分为小巧方便的直接式超声检测仪,以及测量读数可靠广泛的超声检测仪。本文详细介绍了混凝土超声波检测仪的工作原理,并以超声波法对裂缝灌浆质量检测为例,对混凝土超声波检测的应用进行了实验研究。     

多功能电量在线检测仪的研制

针对目前国内电量检测仪精度低、功能单一等问题，研制开发了便携式多功能电量在线检测仪，并详细介绍了电量检测仪的硬件组成及软件设计技术．     

通信控制器现场检测仪研制中窗口检测器的设计

介绍通信控制器现场检测仪研制中窗口控制器的设计，包括窗口检测原理，用于现场检测的窗口检测器窗口电平的设定原则，现场检测仪的误差分析及窗口电平设定。该检测仪已通过有关部门鉴定。     

ZSX1140D型输送带无伤检测仪在燕子山矿的应用

介绍了ZSX1140D型输送带无伤检测仪的用途、适用范围、型号的组成及代表意义,阐述了ZSX1140D型输送带无伤检测仪的工作原理,对比了无伤检测仪安装前后ZSX1140D型输送带的运行情况。     

一种新型的内燃机车气缸压力检测仪

目前通用的内燃机车气缸压力检测仪设备存在一定的局限性,为此技术人员研制出一种新型的内燃机车压力气缸压力检测仪。该检测仪具有精度高、测量准确和直观等的特点。有利于工作者及时发现故障,预防机破等事故的发生。     

基于非分散红(NDIR)原理的便携式瓦斯检测仪

介绍了一种基于非分散红外(NDIR)原理的便携式瓦斯检测仪的总体设计,该检测仪使用进口红外传感器,以新型电调制光源代替机械调制光源,实现了对煤矿井下瓦斯浓度的实时测量、液晶显示和超限声光报警等功能,最后给出该检测仪在甲烷体积分数为0～10%的测量结果,验证了该检测仪在测量精度、范围等方面的优势.     

SY C-1型铁路建筑限界检测仪的设计与应用

简要论述了铁路建筑限界测量的重要性,介绍了SYC-1型铁路建筑限界检测仪的基本原理,重点阐述了该检测仪的机械结构与软件设计。实际应用证明,该检测仪在铁路建筑限界测量中发挥了重要作用,是一种保障铁路运输生产安全的先进机具。     

超磁致伸缩材料的磁致伸缩系数检测仪的研发

基于虚拟仪器软件平台LabVIEW，开发了磁致伸缩系数检测仪。论文介绍了检测仪的构成及在软件设计中的几个主要问题。     

汽车轴距差检测模型及检定策略

针对无法检定汽车轴距差检测仪测量精度的问题,分析了具有轴距差汽车的力学特性,论证了轴距差对汽车操纵稳定性的影响,建立了汽车前进方向与检测仪中心线方向成一定角度斜向行驶时的轴距差检测模型,提出了能够真实模拟汽车行驶状态,可精确调整模拟轴距差并适用于现有各类型轴距差检测仪的检定策略,研发了检定装置的试验样机,实现了轴距差在0～40 mm范围内的任意设定.试验表明,受检轴距差检测仪的精度符合检定规程中误差不大于±0.2 mm的要求,实现了轴距差检测仪的快速准确检定.     

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.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

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.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

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.     

海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to