微积分在概率论中的应用

针对概率论为微积分的后续课程这样一个教学实际,分析两门课程之间的关系,研究微积分对概率论的渗透作用,通过实例等方法说明了微积分在概率论中的几点应用.     

古典概型典型思考方法探讨

在概率论学习中首先接触的古典概型,历来都是教学中的重点.通过部分典型问题探讨一些解古典概型问题的思考方法,有助于概率论基本概念的直观理解,并且有益于开启概率论课程的学习.     

用概率方法计算一类n重积分的极限

介绍概率论中的大数定律在计算一类n重积分的极限方面的应用.所介绍的方法不仅使复杂的积分问题简单化,而且也拓展了概率论方法的使用范围.     

因果空间和概率论中集合论方法

建立<概率论自然公理系统>中的第Ⅰ组和第Ⅱ组公理.这两组公理把随机世界抽象成既直观又形象的因果空间.在因果空间中随机事件是原因点的集合,原因点的伪出现导致事件的出现.证明概率论中集合论方法是因果空间的产物,从而改变了Kolmogorov公理系统把集合论方法硬性地搬到概率论中的做法.     

浅谈如何用概率论证明数学中的不等式

概率论是数学的重要分支,有着自己的概念及其方法,内容丰富,在社会科学、自然科学及管理科学等多个领域均有所应用.不等式是数学中重要内容之一,其证明方法较多,但通过不同证明方法,可收取到不同的效果.该文着重介绍应用概率论证明数学中的不等式,以望对后期不等式证明提供参考.     

理工科院校非数学专业概率论课程教学研究

概率论是理工农林等非数学专业的必修课程,它是后续专业课程的基础,应用也十分广泛.本文从非数学专业对这门课程的教学要求出发,依据近几年课堂教学中的体会与思考,对概率论教学中的一些相关具体问题进行阐述,这些问题是绝大多数教师会碰到的,并提出相应的解决方法.     

概率知识在现实生活中的应用

阐述了数学在生活中应用的广泛性;运用具体问题解释说明了随机现象的含义以及概率论研究对象;随机现象存在于我们日常生活的方方面面和科学技术的各个领域,概率论是指导人们从事物表象看到其本质的一门科学;用概率论的方法对日常生活中的一些看起来比较平凡的内容做些分析,常常会得到深刻的结果;就概率论的方法与思想,在解决生活中的应用展开一些讨论,从中可以看出概率方法与思想在解决问题中的高效性、简捷性和实用性。     

概率论与数理统计教学探讨

概率论与数理统计是一门重要的数学基础课.根据概率论与数理统计课程的特点,结合多年的教学实践,给出概率论与数理统计课程的一些教学思路、方法和措施.     

数学建模思想在概率论与数理统计课程教学中的渗透与应用

本文首先阐述了将数学建模思想融入到概率论与数理统计课程教学中的必要性与可行性;其次,结合概率论与数理统计的教学实践,给出了三个应用案例,讨论了数学建模思想融入到概率论与数理统计课程教学中的模式;进而,通过渗透数学建模思想于概率论与数理统计教学中,以此提升学生解决实际问题实践和应用能力.     

实例分析概率论解决数学问题

概率论的研究对象是各种偶然事件的内在规律,在实际生活中的应用范国十分广泛,在解决各种数学问题的时候,同样可以应用概率论.该文,笔者即结合实例,分析利用概率论来解决数学问题,以望对其他学习者提供参考.     

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