反馈信息与体育教学

体育教学的效果,不仅取决于教师的主动性与学生学习的自觉性,还取决于体育教师在一定条件下如何正确、及时地获得信息反馈,并正确有效地运用。本文就反馈信息在体育教学中的作用及意义、信息反馈的形式、体育教学中获得信息的主要途径和应用信息反馈控制教学质量等方面做一些简略的分析。     

新时期体育教师道德素质提升的重要性

学校体育教学工作和科研工作的成功与否完全取决于体育教师的素质，道德素质为体育教师的基础素质。体育教师在道德方面存在一些问题，改善和提高体育教师道德，才能更好地进行体育教学和科研工作，才能更好贯彻落实新时期党的教育方针，为国家培养出跨世纪全面合格的人才。     

中美高校体育教师评价的比较研究

评估体育教师的工作是学校体育工作的重要内容之一。对体育教师的工作做出正确的评价,有利于体育教师在工作中正确地贯彻教育方针,按照体育教学规律进行教学。对中美体育教师的评价实践进行了系统的比较,找出了两者的优点及不足之处,旨在为我国高校体育教师评价改革提供有益的参考和借鉴。     

体育教师基本功与教学技能研究

教师基本功与教学技能是体育教师平时教学中最为关键的技能,本文通过对体育教师基本功与教学技能的获得与掌握并将其更好的运用到教学过程等环节做了描述,以期对体育教师教学工作起到借鉴作用。     

体育教学中示范与讲解的运用

示范与讲解是体育教师向学生传授体育技术、技能最基本的手段,体育教学中正确示范与讲解的运用,是值得每位体育教师不断探索的课题。     

体育教师应具备的素质

体育教师是学校体育教学和活动的参与者、组织者和引导者,是培养体魄健壮的保卫者和建设者的园丁,是青年人健美的设计师。学校体育能否贯彻执行全面发展的教育方针,培养合格的体育人才,在很大程度上取决于体育教师的综合素质,有一个合格的师资队伍是组织好学校体育工作的前提和保证。     

体育教师专业特质类型研究

依据卡特尔特质理论可知,体育教师的专业特质具有表面特质、根源特质、体质特质、开放特质、动力特质、能力特质和气质特质七种类型.这些特质有体育教师共同的特质,有体育教师个体所独有的特质,有的取决于身体结构,有的取决于环境,有的与动机有关,有的则与能力和气质有关.专业特质研究有助于寻找体育教师群体特性与专业发展的结合点,有助于探寻体育教师核心素养与品质培育的落脚点.     

不同信息反馈策略下两阶段众包竞赛最优投入努力和收益

众包竞赛中众包方的信息反馈策略可以影响众包方获得最大收益,以及使得参赛者获得最大收益的最优投入努力。将众包方的信息反馈策略分为无信息反馈、完全信息反馈、部分信息反馈3种策略,在不同信息反馈策略下构建两阶段众包竞赛参赛者的最优投入努力以及众包方的最优收益模型,并对各模型进行了数据仿真分析。研究发现,不同信息反馈策略的优劣和参赛者的投入努力的成本函数类型有关系。如果参赛者在第二阶段的边际成本为单调递增的凸函数,则无信息反馈策略情况下,众包方获得最大收益且此时参赛者有最优的投入努力;如果参赛者在第二阶段的边际成本为单调递增的凹函数,则完全信息反馈策略情况下,众包方获得最大收益且此时参赛者有最优的投入努力。     

简论教学语言在体育教学中的运用

语言是人们相互沟通的主要媒介.教学语言是教师在向学生传授知识过程中所运用的语言,教师是否正确使用教学语言会直接影响课堂教学效果.教学语言分为有声语言和身体语言.体育教师正确运用教学语言的前提是热爱体育教育事业,不断更新专业知识、提高技能水平.     

成人高校体操教学内容改革初探

根据培养目标、招生对象、社会需要,以及多年中学体育教师工作的实践,和通过成人体操教学课的信息反馈,对成人高校体操教学内容应逐步进行一系列的改革。主要改革措施是培养学生的分析和概括能力,对有些理论内容实行分段教学;技术课减小难度重点提高学生分析技术、运用教法、保护与帮助的技能;“一专多能”,增加实践,逐步提高学生的实际教学能力。     

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