关于第二类Smarandache伪5倍数数列

目的研究伪5倍数数列的均值性质。方法初等及解析的方法。结果给出伪5倍数数列的一个有趣的渐近公式。结论对于类似第二类Smarandache伪5倍数集合上的均值性质,可以利用讨论数列特性的方法给出均值公式。     

关于Smarandache伪10倍数数列的研究

对Smarandache伪10倍数数列进行了研究.首先,用初等方法给出数论函数{1n}关于第一类、第二类伪10倍数数列的渐进公式,其次给出对任意函数通用的伪10倍数数列渐近公式,最后给出关于第一类、第二类伪10倍数个数的计算公式.     

两个关于k阶Smarandache ceil函数的方程

利用初等方法研究了包含k阶Smarandache ceil函数Sk(n)、伪Smarandache无平方因子函数Zw(n)以及伪Smarandache函数Z(n)的两个方程的可解性,给出了它们所有解的具体形式。     

一个包含伪Smarandache无平方因子函数的方程

研究一个包含伪Smarandache无平方因子函数的方程问题．利用初等方法,给出一个包含伪Smarandache无平方函数的方程的所有正整数解,证明了这一方程有且仅有3个解．     

关于伪Smarandache无平方因子函数的一个混合均值

对任意的正整数n,伪Smarandache函数Z(n)定义为最小的正整数m使得n|m(m+1)/2,即Z(n)=min{m:n|m(m+1)/2,m∈N}.而伪Smarandache无平方因子函数Z_w(n)定义为最小的正整数m使得n|m~n,即Z_w(n)=min{m:n|m~n,m∈N}.利用初等和解析的方法研究了伪Smarandache函数Z(n)与伪Smarandache无平方因子函数Z_w(n)的混合均值问题,并获得一个较强的渐近公式.     

伪Smarandache函数在数列a~p-b~p上的一个下界估计

研究伪Smarandache函数在数列a~p-b~p上的下界估计问题.利用初等方法和组合方法证明了估计式Z(a~p-b~p)≥8p,其中p≥17为任意素数,a与b为任意不同的正整数,且ab.结论给出了伪Smarandache函数在数列a~p-b~p上的一个较强的下界估计.     

关于伪Smarandache函数与F.Smarandache LCM函数的混合均值

运用初等和解析的方法研究了伪Smarandache函数Z(n)与F.Smarandache LCM函数SL(n)的混合均值问题,并获得一个有趣的渐近公式。     

推广伪Smarandache函数的初等性质

用初等方法进一步研究了推广的伪Smarandache函数的初等性质,得到了几个复杂的函数值形式,为进一步研究推广Smarandache函数其他性质打下了基础。     

一个含有伪Smarandache函数的方程

利用初等方法及伪Smarandache函数z(n)、Smarandache LCM函数sl(n)和Euler函数φ(n)的性质,给出了数论函数方程■的所有正整数解.     

一个包含Smarandache函数与伪Smarandache函数的方程及其正整数解

利用初等及组合方法研究了一个包含Smarandache函数及伪Smarandache函数方程的可解性,证明了该方程有无穷多个正整数解,并给出了该方程所有正整数解的具体形式.     

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