英语学习评价的人本主义价值取向

学习评价是学习过程的重要环节，其价值取向影响着学习者、教育者的学习观念和教育理念。相对于传统教育评价中趋向于把学生机械化、平均化，忽略体现个体、个性的内容，人本主义理论的教育理念恰恰体现了学习评价对“人”的关注，从而顺应当前英语新课程改革中培养“全人”的素质教育导向。以人为本、以学生为主导的学习评价理念，把人的潜能和价值作为研究对象，主张以学生为中心的教学，注重完整人的教育，为全面发展的英语人才的培养打下了坚实基础。     

小学数学有效学习的探索

建构主义学习理论认为,学习是学生自主建构知识的过程.这意味着学习是主动的,学习者要对外部信息做主动地选择和加工,需要与其他同学共同针对某些问题进行探索,并在此过程中进行交流和质疑,再在彼此间作出某些调整.因此,"数学学习活动应当是一个生动活泼的、主动的和富有个性的过程".在数学课堂教学中,教师要善于通过对教学策略的优化和调整,使个体与社会环境、自然环境产生相互作用,从而促进学生对知识的积极建构,促进学生有效学习.     

师范院校培养小学科学教师探究能力的理论与实践

时代的发展需要我们更新教育观念,改变传统的教学方式、学习方式,用探究式教学代替知识传授式教学,从而培养学生的探究能力。论文探讨了探究式教学操作程序,其核心是让学生通过自我探究将知识转化为能力。实验研究表明:与传统教学相比,探究式教学在学生观、教师观、教学过程、教学评价等方面都有很大的不同。探究教学的重心或出发点在于学生方面,把学习过程视为一个学习者主动进行知识建构的过程。探究过程中的多元互动、学生与教师、学生与学生之间的交流与合作,使学生的综合素质得到提高。     

在探究性实验过程中建构学生的创新能力

建构主义理论强调以学习者为中心。教师在教学过程中发挥组织者、指导者、帮助者和促进者的作用,利用情境、协作、会话等学习环境要素充分发挥学习者的主动性、积极性和首创精神,从而达到实现对知识的意义建构和过程中的能力建构。而当今中学化学教师开发设计的探究性实验是学习者(同时也是研究者)通过亲自实践建构化学知识和能力的一个重要途径。1．以教师为主导,设置知识和问题情境建构主义学习理论提倡在教师指导下的以学生为中心的学习,追求教与学的合作化,并强调创建真实情境,把创设情境看作是“意义建构”的必要前提。把情境创设看作是教学设计的最重要的内容之一。根     

建构主义理论与物理教学实际

建构主义理论认为，学习者是在与其周围环境的相互作用中逐步建构起关于外部世界的知识，从而使自身认知结构得到发展．因此学习者应该是信息加工的主体、知识意义的主动建构者．教学必须以学习者为中心．而不能以教师为中心，不能把学生看作是外部刺激的被动接收者和知识的灌输对象．     

小学数学有效学习的探索

建构主义学习理论认为,学习是学生自主建构知识的过程。这意味着学习是主动的,学习者要对外部信息做主动地选择和加工,需要与其他同学共同针对某些问题进行探索,并在此过程中进行交流和质疑,再在彼此间作出某些调整。因此,“数学学习活动应当是一个生动活泼的、主动的和富有个性的过程”。在数学课堂教学中,教师要善于通过对教学策略的优化和调整,使个体与社会环境、自然环境产生相互作用,从而促进学生对知识的积极建构,促进学生有效学习。     

语篇教学之管见

笔者在本文中就语篇教学模式在大学英语精读课中的作用进行了探讨,并分析了语篇教学的特点:不仅把课文看作语言知识的载体,更将其视为信息的载体。它把语言知识集合性综合地输送给学生,使其产生连锁反应,从而缩短了学生从学习到实践的距离。从培养他们的阅读能力入手,全面提高他们的交际能力。笔者认为这种教学模式应该是大学英语精读教学的方向。     

在成人美术教学中如何培养学生的绘画兴趣

在成人美术教学中如何让学生对绘画产生兴趣,在有限的课时条件下学习到真知识,培养学生的创造性,是教师深入研究的问题。根据学生个性差异和实际水平,因材施教,倡导乐学,培养学生学习兴趣,从而实现发展学生的个性特长的教育目标,是本文主要探讨的问题。     

电工基础的五步教学方法

使学生处于主体地位,活跃课堂气氛,改变灌输教育的现状。在此探讨关于激发学生兴趣,提高电工基础教学效果的一些教学方法,使学生真正对电工基础产生兴趣,并把学习看作是快乐的事。在教学过程中充分开发学生的想象力、创造力、语言表达能力、动手能力,从而提高学生的素质。     

外语自主学习能力的培养

随着以学习者为中心的教学观念的确立,学习自主性受到越来越多的关注.自主学习者自我负责管理学习.自主学习能力需要教师有意识地进行培养.本文简要阐述了近年来外语教学领域对学习自主性的理论认识、培养学习自主性的必要性以及在我国当前的教育环境下如何培养学生的外语自主学习能力,从而使学生成为真正的自主学习者.     

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.     

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.     

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.     

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.     

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.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

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。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.     

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.