浅谈小学音乐教学中学生的主动参与

近几年随着新的小学音乐课程标准的颁布与实施,使学校艺术教育教学面临着前所未有的机遇和挑战。音乐课是学生进行自主的音乐时间活动．但对于中小学生而言,在一定程度上,音乐艺术并不是一门知识．而是一种内心体验,一种音乐审美愉悦的体验,没有亲身参与到音乐活动中的人,是不可能获得这种体验的。教育心理学的研究表明．教学效果往往更多的取决于教师教学是否符合学生的心理需要和理解水平。因此,在音乐教学中我要构建起让学生主动参与的音乐教学,体现以音乐审美体验为核心,引导学生主动参与音乐实践,从而启动学生多种感官,让学生亲身感受、理解、表现和创造音乐。怎么让学生积极主动的参与到教学中．我认为：     

浅谈现代化教学手段在生物教学中的应用

由于生物学的学科特殊性，在教学过程中科学地利用各种现代化教学手段，能够使学生更直观、更系统地掌握所学知识，达到事半功倍的教学效果．章就生物教学中利用现代化教学手段的有关问题加以阐述．     

浅议网络环境在高中地理教学中的应用

该文以高中地理教学实践为载体,在新课程的理念下,以建构主义理论为指导,主要论述了基于网络环境下开展高中地理教学的一些做法.通过实例进行初步分析、总结与提炼,以培养学生的信息吸收和信息加工能力；用新信息的吸纳来刺激学生的好奇心;让学生真正体验知识探究的过程;让新旧知识的碰撞、融合、重组来活跃学生的思维活动.     

初中历史与社会体验教学探讨

体验教学法是指让学生在一个真实或模拟的环境中体验生活、体验乐趣、体验自主学习、体验创新、体验学习过程、体验成功,从而培养学生的学习情感,培养学生的实践能力和创新精神。本文通过在初中历史与社会课中运用体验教学的策略进行教学,让学生在各种体验活动中动起来。     

浅析中学物理课堂教学中的情境教学

教师在课堂教学中精心创设教学情景,激发情感,巧妙激疑,提高学生学习的积极性和主动性,让学生变＂要我学＂为＂我要学＂,让学生获得知识与技能、体验过程与方法、发展情感态度与价值观。     

论研究性教学

研究性教学,就是教师通过展示自己对问题的研究过程,让学生学习研究方法、体验研究过程,并通过引导学生自主思考,研究事物的本质、规律和发展的必然趋势,培养学生的思维能力、自主获取知识的能力和研究渴望的教学。这里重点探讨了研究性教学的内涵、特点和条件。     

中职教学中数学作业的改革

作业是教学过程中一个不可缺少的环节，也是学生学习过程中一个重要的组成部分，通过作业，不仅可以检查课堂教学的效果，弥补课堂学习的不足，加深学生对所学知识的理解、记忆与运用，而且可以培养学生的思维能力、探究能力和创新能力，同时还可以让学生探索获得知识的方法，体验知识形成的过程，形成科学的价值观。     

让研究性学习走进生物教学课堂

研究性学习简单的说是通过学生的感受和体验,从开放、多元学习环境中主动获得知识过程。本文拟就夯实研究性学习基础,培养研究性学习思维意识,增强研究性学习勇气及研究性学习的实践等方面,深入阐述生物学教学中培养研究性学习。     

研究性学习在高职化学教学中的应用

研究性学习的核心是创新精神和实践能力的培养。在高职化学教学中,积极开展研究性学习是培养现代化高级应用型人才的一个重要手段。努力优化教学情景,诱发研究动机,尊重学生和专业个性,强调学生学习的探索与研究、情感与体验、交流与合作过程,让学生在研究性学习过程中感悟到创新的乐趣;在研究性学习过程中探求知识,锻炼学生自主学习的能力、创新能力和实践能力,加快学生成为可持续发展的人才。     

中职数学教学要加强“人文主义”的教育

中职数学教学中我们要坚持"以人为本",以学生为主体,承认个体的差异性;让学生们体验数学的过程,品尝成功的兴奋和喜悦;加强有趣的数学史和故事的渗透,加强与其它学科的联系;用爱感动学生,产生情感和知识上的共鸣。使用多种途径来激发学生学习数学的兴趣,完成中职数学肩负的双重使命。     

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.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

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.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

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