从不同视角探究《初等数学研究》课程

从研究中学数学知识结构、解决中学数学疑难问题、挖掘中学数学思想方法和提高师范生数学素养四个视角,探讨高师院校《初等数学研究》课程,为提高教学质量提供借鉴.     

对提高中学数学教师教学能力的思考

分析了甘肃省部分中学数学教师数学基础的情况,提出了提高中学数学教师教学能力的几点意见.     

《中学数学教材教法》课程改革与教学实践探究

分析《中学数学教材教法》课程建设的历史进程,并对教材建设提出一些建议.同时对课程改革的实践进行探索,提出提高《中学数学教材教法》课程教学效果的措施以及《中学数学教材教法》教材改编后的内容.     

扩大优生面、缩小差生面、提高合格率的作法与经验

在大力加强基础教育,提高民族素质的奠基工程中,中学数学教学质量的高低直接影响着学生素质的提高,更新中学数学的教学观念,改革传统的数学教学方法,不断提高数学教学质量,已经成为我们广大中学数学教师义不容辞的光荣任务。下面仅以自己二十多年来的教学实践,浅谈扩大优生面,缩小差生面,提高合格率的作法和经验,就正于同行。     

探讨发散思维在中学数学解题中的应用

中学生解题能力的强弱,直接影响着他们高考以及未来的发展。发散思维是提高中学数学解题能力的重要法宝,那么发散思维有什么特征和作用？中学数学解题有什么特点和要求？发散思维在中学数学解题过程中有什么样的应用？教师如果提高中学生的发散思维能力？本文针对这些问题,给出了相应的探讨。     

关于提高数学教师综合素质的探讨

基础教育课程改革要求全面提高教师的综合素质.目前中学数学教师在教育观念、相关专业知识及自我更新意识方面还需要进一步加强.笔者通过对中学数学骨干教师的培训,提出中学数学教师应更新观念,不断完善自我;练好内功,提高综合素质的建议.     

中学数学素质教育呼唤教师的继续教育

从中学数学教育现状与21世纪数学教育的前景入手,揭示现阶段中学数学应试教育的种种弊端。面向未来,数学教育要适应现代科技社会发展的需要,必须深化改革,实施数学素质教育。加强教师继续教育工作,迅速提高教师的素质已是实施中学数学素质教育的必然要求。     

中学数学教学研究课程改革的实践探索

以提高学生中学数学教学能力为目标的《中学数学教学研究》课程的教学面临着严峻地挑战，本文从教学的角度出发，紧密联系中学数学的教学实际，对该课程的改革进行了探索，为培养合格的中学教学教师贡献力量。     

中学数学小组合作学习存在的问题及对策分析

该文从小组合作学习的相关概述入手,着重分析了中学数学小组合作学习存在的问题,并探索了中学数学小组合作学习的完善对策,以优化中学数学小组合作学习的效果,从而能够在教育教学中为提高教学质量、改善教学环境做出贡献。     

简析数学分析在中学数学教学中的作用

中学时期的数学教学内容都是以课程知识点的掌握作为教学任务核心重点.在整个中学数学课程教学阶段,数学分析方法是中学数学课堂掌握知识点的有力武器,它强调通过定义、运算法则、定理及公式应用等进行教学,故此中学数学教学通过数学分析可以有效提高教学效率,并且可以促使学生提高逻辑推理、数形结合、语言表达等方面的数学分析能力,在课堂教学及学生掌握解题思路等方面具备重要现实意义.     

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.     

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