汉阳命名辨析

山南、水北为阳,山北、水南为阴,这是我国古代郡县命名的主要根据之一.但也有不少郡县,虽以阴阳命名而却和阴阳古训不符.关于这种情况的产生,归纳起来有三种原因:一是原来命名与本义相符,后因河流改道、更名或郡县迁徙而名称不易;二是命名当初,由于盲目沿袭古名,失于核实而致误;三是命名之时根本就不遵阴阳之训(包括避讳在内),这种情况为数较多,发生的时代一般也较晚.因此,研究以阴阳命名的地名,必须详加考定,绝不能一概而论,汉阳的命名即是一例.     

命名数据网络分级命名路由仿真实验研究

利用仿真工具Mini-CCNx,设计并实现了命名数据网络(NDN)中基于分级命名机制的路由仿真实验,通过设置不同的名字前缀来测试Interest包的响应情况,实验结果显示了NDN中基于分级命名机制的Interest包在路由和转发上的特点及优势.     

有机化合物中文名称中的化学介词:由来与演变

详细探讨了1908年以来提出的中文有机物命名方案在化学介词上的使用情况,指出虞和钦在《有机化学命名草》中最早使用化学介词,并着重论述了他使用化学介词的语境,梳理了继虞和钦之后化学介词的演变过程,讨论了各方案对化学介词省略情况的处理。     

胎盘肽的免疫作用及临床研究

以胎盘为原料提取小分子物质胎盘肽,系八十年代初期始创自我国。十多年来的临床实践证明胎盘肽是一种具有发展前景的免疫调节剂。本文拟就胎盘肽的免疫作用及我国临床应用情况作一概述。 1、关于命名问题 根据其生物活性命名为“胎盘转移因子”、“胎盘因子”和“胎盘免疫因子”等;根据其所含的主要成分,命名为“胎盘     

商场服装品牌命名语言使用调查

语言态度是指人们在社会认同、感情等因素的影响下对一种语言的社会价值所形成的认识和评价。在商业文化日趋兴盛的当下,商场的服装品牌命名出现诸多情况。目前的商场服装品牌命名洋化倾向明显,国人在语言使用上的态度需要规范和引导。     

黑手党42个最强大的家族

据意大利情报部门统计,1990年意大利共有142个黑手党家族。以下是其中42个大家族的情况。图例泰拉西尼以起源地命名的"家族"名称 ,     

一种有态HTTP的Internet信息服务模型

针对Internet上信息服务有态性的情况 ,以CGI、WindowsDLL、命名管道和Java固有方法等技术为基础 ,构造了一种有态HTTP的Internet信息服务模型     

汽水管道三维模型层次命名分析

介绍了在三维数字化电厂模型中,依据规定制定热机专业汽水管道三维模型的层次逻辑关系。结合实际情况,笔者所在公司自行拟定了汽水管道层次命名规则,通过在COMOS平台内建立KKS编码系统,实现了电厂KKS编码命名的自动生成,并将COMOS编码信息推入PDMS,在PDMS内自动生成管道KKS编码的同时,确保了管道数据的统一性及唯一性。     

“艺术命名”之理路

艺术命名的源起为艺术创造;艺术命名的过程为发现和赋予意义;艺术命名的结果为命名艺术及其样式表现。艺术命名,要把握艺术创造的主体创造和客体创造、认知艺术命名过程中的"追认"性、艺术及其样式表现的差异性,从而为"艺术命名"理清脉络。     

有机化合物系统命名若干问题的讨论

在一些高校教材及相关出版物中,关于有机化合物系统命名规则仍存在若干问题,笔者对系统命名法进行了研究,并对多烯烃的Z/E命名、烯炔的命名、卤代烷的命名、R/S命名等问题进行了讨论。     

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.     

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     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the