农村初中物理分层教学探讨

本文在阐述分层教学含义及农村初中物理实施分层教学模式前所需准备工作的基础上,分析探讨了农村初中物理实施分层教学的策略。     

浅谈初中物理知识教学与农村科技教育的有机结合

要在物理教学中使学生了解物理知识的应用,在生产实际和现实生活中学到书本上没有的知识,用物理知识指导生产实际和生活实际,更有现实意义,这也是促进农村科学和技术在农村的普及和推广的重要措施之一。笔者就初中物理知识在农村生产与生活的运用以及如何结合农村科技教育进行物理教学谈几点体会。     

农村初中物理教师专业素质调查与问题思考

目前教师专业发展研究仍然是教育界的热门话题,教师专业发展必不可少的要针对教师的专业素质进行研究,很多学者根据自己的研究专长,从不同角度出发,进行了关于教师专业素质的有特色的研究,但是关于农村教师的专业素质一直没有得到过多的关注,并且多数学者着眼于高校教师和高中教师,对于初中教师专业素质的研究则较少,把"农村"与"初中"两个关键词结合起来,展开研究.对吉林省农村初中物理教师队伍的自然情况及专业素质(包括专业情意、专业知识、专业技能等)进行了问卷调查,基本掌握了吉林省初中物理教师专业素质现状、分析统计结果、讨论问题存在原因,并结合吉林省实际提出了发展农村初中物理教师专业素质的几点建议.     

农村初中物理教学的困境和对策

当前农村初中的现状是优质生源留不住，不断外流，留下的是学困生，留守学生。农村初中物理老师付出了努力学生的成绩却不理想，针对这种局面，我作了些走访、座谈和调查，并通过讨论分析了形成这种情形的主要原因。     

农村初中物理教学中“两极分化”的成因及对策

物理教学中，农村初中学生的“两极分化”历来是困扰物理老师头痛的问题，它给大面积、大幅度提高物理教学质量带来了严重障碍。笔者根据自己多年来的实践，就此问题的产生与解决作一初步探讨。     

农村初中物理创新教学探讨

本文在阐述创新、创新教学含义及物理学课程创新教学价值的基础上，分析探讨了农村初中物理创新教学的策略。     

综合素质人才培养的一种途径

面向２１世纪，师专物理的教育教学改革必须走向现代化；面向广大的农村，师专物理教育又必须培养适应基础教育和经济发展需求的初中物理教师。本文讨论对这一特殊的教育层次，从综合素质人材的培养，谈物理教育教学改革的思路     

对初中物理教学规律的探讨

在初中物理教学中,如何根据初中物理教材的特点,探讨初中物理教学的规律,进而确定科学的教学方法,是提高初中物理教学质量的关键。现谈一谈本人粗浅的认识。     

试论提高初中物理教学质量的举措

初中物理是一门可以贴近生活,可以培养学生问题意识,培养学生实验能力的学科,在初中物理教学中,物理老师可以从这几个方面引导学生学好初中物理,同时也必然能够提高初中物理的教学质量。     

浅谈如何提高初中物理教学的有效性

物理是初中的重要科目,是高中物理学习的基础,高效的物理教学能提高学生的物理成绩,同时少占用学生的课余时间。本文首先谈了当前初中物理有效教学探索中的问题,然后谈了研究初中物理有效教学的意义,最后谈了提高初中物理教学有效性的途径。     

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