调动学生学习线性代数的积极性的初探

线性代数是一门理论很抽象的数学基础课,因此很多同学觉得枯燥无味、提不起兴趣。本文结合个人的教学实践,探索了提高学生学习线性代数积极性的方法。     

矩阵的数学实验及其应用

探讨了在线性代数教学中引入Matlab平台下矩阵相关运算的数学实验,引导学生利用数学软件解决线性代数中的相关问题,从而激发学生的学习兴趣,培养学生的应用实践能力。     

浅析小学数学教学中培养创新技能策略

数学学习对于学生创新思维的形成和创新技能的培养有着非常重要的作用。教学中要尽量大的努力,善于激发学生的学习兴趣,改进教学方法培养创新技能,充分调动学生学习的积极性。     

浅谈如何提高中专学生对体育课的兴趣

目前中专学校普遍存在学生对体育课兴趣不高,缺乏体育锻炼的积极性,甚至产生厌学,学习的积极性不高,严重影响了体育课的教学效果和教学质量。笔者对中专学生组织调查,并对其进行分析,以探究学生为何不喜欢体育活动的原因,探索提高、引导学生上好体育课的有效措施。体育老师在教学中要抓住学生心理,注意教学卫生,优化课堂环境,激发和培养学生兴趣。     

浅谈《线性代数》教学改革的实践与体会

结合线性代数课程的教学改革和教学实践,通过对已有教学方式的总结,该文探讨了提高线性代数教学质量的教学方法,提出改进线性代数教学方法的几点实践与体会：（1）改变课堂教学模式,引导学生主动参与到教学过程当中,让学生完成角色转化,由被动学习转化为主动学习;（2）介绍与内容相关的最新科研成果给学生,激发学生的学习兴趣;（3）借助MATLAB软件,将数学实验融入线性代数课程的研究与实践,让学生体会学以致用解决问题的乐趣。     

在平面几何起始教学中激发学生学习兴趣的几点作法

长期以来,初中平面几何课起始阶段的教学,常常不易取得良好的效果,这是初中数学教学的一个严重问题.现代教学方法强调,教学要充分调动学生学习的主动性、积极性,引导学生探索、发现,形成学生自身对知识的需求.在教学中,要想充分调动学生学习的主动性、积极性,燃起学生的求知渴望和学习热情,就必须激发学生的学习兴趣.心理学研究表明,学习兴趣是引起学习动机推动学生学习的一种重要的心理因素.有了兴趣,就会乐此不疲、锲而不舍、不断追求.由此看来,激发学生的学习兴趣,是启迪思想、培养能力、提高     

线性代数直观教学

学习数学不仅要学重要的数学概念、方法和结论,更要领会到数学的精神实质和思想方法。然而其抽象的概念却耗尽了学生的学习热情,使得学生无法将所学理论应用于实际问题中。本文主要就如何提高学生学习线性代数的兴趣以及线性代数直观教学法展开论述。     

基于应用型人才培养定位的《线性代数》课程教学改革

该文主要探讨了如何在新建应用型本科院校线性代数课程教学过程中加强实验教学,借助自主学习平台,将数学建模思想融入线性代数学习中,激发学生的学习积极性,提高学生的学习效果,培养学生的数学应用能力。     

浅谈高职院校数学课堂教学的优化

高等数学课对于很多同学来说都是一门难懂的学问,很多人怕学数学,不愿意听数学,也听不懂数学,更不愿意做数学,因此,当前的紧要任务是要抓好课堂的45分钟,提高课堂教学效率和效果,在教学中,从生活出发、由解决实际问题引出教学内容,适当讲述数学史和数学方法,提高学生兴趣.同时要建立、健全一个合理的评价机制,激发学生的积极性,对高职学生的数学学习进行引导,从而实现数学教学的提高.     

精选数学问题激活数学思维在小学数学中的应用

数学的学习能够提高学生们的逻辑思维能力,这种逻辑思维能力在以后步入社会时也会发挥非常大的作用。小学时期是学生们形成数学思维的关键时期,教师应该在小学数学教学中为学生们创立数学思维,提高学生自主学习的积极性,增强学生们对数学的学习兴趣,提高课堂效率。人们之所以学习数学是因为它能够提高科学文化素质,学生学习数学可以提高自己的数学素养。并且可以在未来步入社会时学以致用。数学还能够解决很多生活中的问题,小学时代是接受数学教育的最佳时期,教师要充分利用这个时期激活小学生的数学思维,激起学生们对数学的学习兴趣。     

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.     

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.     

Jane Eyre——A Feminist In The 19th Century

In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.     

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-