关于绝对伪素数的计算程序

获得了绝对伪素数的判别准则及三因子绝对伪素数的计算方法, 得到了绝对伪素数的几个计算公式,给出了计算三因子绝对伪素数的计算程序,从而得到了许多三因子绝对伪素数.     

关于纯形素数无限性

纯形素数的发现是在1986年。以下提供的数据是近年用计算机验算检索的首批数据(p<10~6)。纯形素数在分布规律的特点大大优于Fermat素数。Mersrne素数,由于数据显示出对任意正整数n而言,在n~3与(n十1)~3之间至少存在3个统形素数,如果证明了统形素数无限多,则抓住了素数集合的核,到那时我们应该正式命名纯形素数为核素数。本文的初步分析表明,要想证明纯形素数无限多,则需对数论的基础理论作出重大发展。     

任何费尔马数都是素数或伪素数

获得了判别伪素数的充要条件;证明了任何费尔马数及其因子都是素数或伪素数;得到了两个费尔马数及其因子之积为伪素数的充要条件。     

奇合数公式与一种新的素数判断方法

本文首先给出奇合数的公式,然后根据奇合数公式给出了一种新的素数判断方法,最后根据奇合数公式得到了素数集合的算法。     

关于筛法和指定的整数集合中素数与殆素数的个数

本文将改进通常的筛法,以研究给定的整数集合中素数与殆素数的个数.所得到的上界,用于几个著名问题(哥德巴赫问题,孪生素数问题,n~2 1型素数问题等),恰与人们根据其他方法(Linnik 的 dispersion 方法等)与假设(GeneralizedRiemann Hypothesis 等)所推测并预料为正确的结果在阶的意义上一致;而所得到的下界,对许多数论问题的原有结果,可以在阶的意义上作出改进.     

素数分布的三组递推公式及其应用

在研究素数分布过程中，通过创立一种新的筛法与台阶理论，得到关于素数分布的三组递推公式：不大于x的素数个数与孪生素数对数量的递推公式；不大于x的孪生素数个数的递推公式；任意偶数x≥6表为两个奇素数之和与孪生素数对数量对数的递推公式。     

关于判别孪生伪素数的充要条件

证明了存在无穷多个伪素数，获得了判别伪素数和孪生伪素数的充要条件，建立了伪素数和孪生伪素数的计算程序，从而获得了许多伪素数和孪生伪素数。     

对一个梅森素数分布猜想的质疑

梅森素数分布研究是数学中的一大难题。从目前已知的梅森素数出发,通过数据分析指出:猜想"梅森素数的指数p所形成的二阶差分序列按5项一组来划分,每组中都有3项非负值与2项负值"是错误的。     

关于判别孪生伪素数的充要条件

证明了存在无穷多个伪素数,获得了判别伪素数和孪生伪素数的充要条件,建立了伪素数和孪生伪素数的计算程序,从而获得了许多伪素数和孪生伪素数.     

有关梅森素数的预测

梅森素数是一种特殊的素数,探究梅森素数的分布规律历来是数论研究的热点与难点;对梅森素数的分布规律作了简略研究,同时也对梅森素数研究的前景进行了展望。     

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