一年来欧战军事的检讨

一战争的辩证法一年的欧洲大战比历史上一切战争更明白具体的证明了战争的辩证性。一般的,它说明了战争作为历史发展过程中一现象的必然;特殊的,它揭露这现象本身内部的辩证。在这次战争未曝发之前,曾有一连串的企图来消弥它和转移它。然而它证明了它自己在客观的历史的条件下,是不能消弭和转移的。资本主义世界达到了现阶段,它的内部矛盾已经发展至极尖锐的程度,它必然要求一次总的清算。别方面,社会主义势力却显呈了超特的能力,能够在资本主义的包围中发展本身的力量,利用他人的矛盾,保卫着和增强着自己,造成它的不可侮的地位。     

PRM关系模式的语义及其投影操作研究

PRM是众多的为处理不确定数据而提出来的数据模型之一。它符合关系模型的INF,并有一套与传统关系模型相一致的代数系统,它是传统关系模型的一个扩充模型。但和任何新生事物一样,它还不是很完善的。该文分析了它在关键字的定义和投影操作方面的不足之处,重新定义了它的关键字,使它更接近传统关系模型,并对它的投影操作作深入的研究。     

神秘的飞棍

它,来无踪去无影,却在世界各地频频出现。说它是昆虫,它的飞行速度却令所有飞行生物望尘莫及;说它是飞行器,它却拥有扑动的翅膀和惊人的智能,它是什么?UFO?还是……     

人体最大的器官

无瑕的皮肤是多么美好的东西。我们爱护它,滋养它,试图改善它。但是,我们通常只是把它当作一层皮,其实这误解和低估了皮肤的作用。人类自己从未造出过比它更好的传感器、防护罩和通报器。皮肤是一个很好的保护罩。它的最外层——编织紧密的表皮细胞形成了坚固的屏障,能保留水分,而把不必要的水分挡在外面。死去的和脱落的细胞在表面紧凑地排列好,使皮肤更坚韧,就像一层透明的     

长寿的朴喙蝶

朴喙蝶(Libythea celtis chinensis)是一种小型蝶类。它最显著的特征,是它鸟嘴似的长“喙”。这是一对并拢在一起的下唇须,其长度差不多等于触角之长的2/5。除此之外,在其它方面它很平庸:它的外貌和飞翔姿态像蛱蝶;它的雌蝶前腿正常而雄蝶的前腿半退化了,这和灰蝶相似;它的幼虫乍看上去像粉蝶的青虫;而它的小悬蛹又和眼蝶的蛹差不多……。好像它处处都在模仿别的蝶类,所以不久以前喙蝶还不算是一个独立的科,而是被作为     

那只我没逮到的小鸟

今天天气闷热,放学后我到田间看庄稼,沿着杂草丛生的田埂走着,忽然前面的大豆丛中走出一只银灰色的小鸟。我们的距离越来越近。我跟着它,想逮住它。它在我前面走着,跳着,体态轻盈,机灵可受,两只炯炯有神的眼睛四处张望着,弄得我心里痒痒的。我把它追到小河沟里,它却借着沟中草丛的掩护,逃到了对岸。嘿,它是在和我斗智斗勇呢!于是,我绕道到了对岸,它却洋洋得意地站在柳枝上望着我。它不时地张开小嘴,也许是刚才为了躲避我,逃跑时运动量加大喘气的需要……那样子可更加可爱,也显得弱小。虽然弱小,但它已学会选择和利用有利地势和位置来保护自…     

十月社会主义革命后民族独立运动的性质

一、问题的提出民族独立运动的蓬勃发展和广泛胜利,是我们这个时代的主要特点之一。它引起了一切人们越来越多的注意:民族独立运动的敌人注意它,是为了寻找镇压、破坏它的途径;民族独立运动的朋友,特别是社会主义阵营各国的人民对它兴趣浓密,关注它,研究它,是为了更好的支持它,更好的团结它,来打击全世界人民的共同敌人——帝国主义。     

可怜的刺猬

看见小刺猬,我便想起前苏联作家普里什文的散文中那可爱的小动物。它将烛光当作月光,将烟当作天上的云,将废报纸当作林中的落叶。只要人能善待它,它便把人当作可信赖的朋友,它无求于人,却能给人以愉悦。它能捕鼠,吃各种昆虫和野外的浆果,能吃蜗牛和讨厌的蛞蝓。它对人类绝无害处,却是大自然中与人类有同等生存价值的一员,它是我们的朋友。小刺猬常活动在月光照耀的林下、灌丛中、小溪边。它会游     

夏日暇思

夏天来了,它给人们带来了透明蔚蓝的天空,醉人的绿阴郁郁葱葱,山花在晚风中婆娑起舞。夏天是迷人的,它没有过多的修饰,没有娇柔的造作,只有永恒和执着,它把一切都坦露给山川、河流和小草,它是无私的奉献。     

抢险救援:我们随时出发……--记邵阳市救护大队暨公共安全抢险队

煤海,一片沟壑纵横,山恋起伏的黑色世界,它纵然给人以千般荒芜,万般凄凉的景象。却在它火热的内心深处蕴藏着人们赖以生存的能源和热量。然而在它为人们带来光明和温暖,以及美好物质享受和现代文明的同时,它也在不时地为人类滋生着恐惧、险恶、痛苦和死亡……     

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.     

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.     

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.     

A computer generator for randomly layered structures

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

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.     

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