“建构式”语言观下小学英语课堂教学设计的优化与实施

从"二语"习得规律、仔细审视"任务型"教学法下的小学英语课堂教学并通过听课观察、评课、议课和问卷调查等方法,提出了相对模式化的小学英语课堂教学设计方案。该方案期待达到可操作性和推广性强的初衷,以积极、稳妥、有效地推动和落实《英语课标》和"任务型"教法下的教学理念和方法,促进小学英语教师教学行为转型,最终实现课堂教学优化。

Helping learners construct correct beliefs about English learning

Learners themselves are playing an essential role in foreign language learning. ＂To teach＂ is not enough for foreign language teachers, and what is more important for them is to help the learners construct correct learning beliefs and instruct them how to learn. Based on the questionnaire, this paper sums up the leading deviations in English learning and makes corresponding proposals of how to help students construct correct learning beliefs.

Microstructure modeling and virtual test of asphalt mixture based on three-dimensional discrete element method

The objective of this work is to model the microstructure of asphalt mixture and build virtual test for asphalt mixture by using Particle Flow Code in three dimensions(PFC^(3D))based on three-dimensional discrete element method.A randomly generating algorithm was proposed to capture the three-dimensional irregular shape of coarse aggregate.And then,modeling algorithm and method for graded aggregates were built.Based on the combination of modeling of coarse aggregates,asphalt mastic and air voids,three-dimensional virtual sample of asphalt mixture was modeled by using PFC^(3D).Virtual tests for penetration test of aggregate and uniaxial creep test of asphalt mixture were built and conducted by using PFC^(3D).By comparison of the testing results between virtual tests and actual laboratory tests,the validity of the microstructure modeling and virtual test built in this study was verified.Additionally,compared with laboratory test,the virtual test is easier to conduct and has less variability.It is proved that microstructure modeling and virtual test based on three-dimensional discrete element method is a promising way to conduct research of asphalt mixture.

Study on implementing constructivism teaching concept of British-American Literature Teaching

Due to the influence of traditional teaching concepts, teaching practice of English and American Literature, perfusion teaching model has been relatively common, students tend to become a vassal and object of teaching, criticism and independence have been suppressed. Constructivist teaching concept is raised by drawbacks of traditional teaching. Starting from the reflection of the traditional teaching of English and American literature, propose the external study to explore multiple perspectives and to define the center to teach learning-centered teaching concept, and thus analysis the reform method, direction and specific implementation methods of current English and American Literature teaching, hoping to affect the current British and American Literature Teaching reform.

Characters of Urban Development and Its Spatial Morphology Underground Space Influences on Urban

Underground building with such major functions as underground traffic, commerce, culture and recreation, especially the multifunctional underground large-scale public complex, has become a significant part of the overaU functional structure or even the core of a city. Therefore, the expression of the architectural appearance, and characters of underground building, as well as the integration between the building and its external environment constitute an important part in improving overall functional structure and optimizing cityscape. From the perspective of space and environment shaping, the author explores the architectural appearance, and characters of underground building and its external environment, provides several basic design patterns with further discussion.

孙颖的民族舞蹈观

孙颖是我国当代著名的舞蹈学者。早在20世纪50年代初期,他便参与了北京舞蹈学校的中国古典舞教学及教材建设工作。在经历几十年的人生坎坷后,他于80年代开始对中国古典舞的文化建设进行全面反省:一是全面反省当代“中国古典舞”学科建设的基点;二是全面反省中国古典舞蹈文化的精粹之所在;三是在全面反省的基础上从创作、教学等方面来思考中国古典舞的总体文化景观。

An Exploratory Study of Non-Native English-Speaking Teachers' Professional Identity Construction in a Globalizing China

Employing one-to-one interviews,this study explores,from a poststructuralist view,how Chinese English Teachers(CETs)struggle to construct their professional identity within the dominant ideology and disempowering discourses of native-speakerism in a globalizing China.Twenty-five CETs were interviewed,and the results have shown that applying human agency and subjectivity,CET participants manage to counteract the disempowering discourses and reach a relatively balanced power relationship with their native speaker(NS)counterparts mainly through four ways:Othering the NSs;exploring their own unique strengths;taking special roles in ELT;and establishing their credibility through hard work.The Chinese culture of learning,specifically,Confucian values,also plays an important role in CETs’professional identity construction.

Lanthanide complexes mediated coordinative chain transfer polymerization of conjugated dienes

Tremendous advances has been witnessed in the past few years in the lanthanide complexes mediated coordinative chain transfer polymerization(CCTP) of conjugated dienes. CCTP features catalyst economy, well-controlling over both microstructure and architecture of the resulting polymers, and accessibility for novel(co)polymers. This review highlights the recent progresses made in the field of CCTP of dienes. After a brief introduction, the body of this review is divided into three parts:(1) principle of CCTP;(2) coordinative chain transfer homopolymerization of dienes;(3) coordinative chain transfer copolymerization of dienes.At the end, we present some challenges remaining in this area and our personal opinion regarding where this field should continue to develop. CCTP represents a novel strategy to prepare polydiene synthetic rubbers with controlled high molecular weight and narrow molecular weight distribution, which has reached the practical industrial application level, demonstrating a great potential in industrialization.

Ethnography and the Internet： Taking Account of Emerging Technological Landscapes

This article explores the strengths of ethnography as a methodology for exploring the complex social landscape of the contemporary Intemet. The article outlines the historical development of the Intemet, from Web 1.0 to a participatory Web 2.0 embedded within everyday life and ultimately to the prospect of an autonomous Internet of Things. The benefits of an ethnographic approach for understanding such developments in depth and examining taken-for-granted assumptions are outlined alongside an account of some of the challenges that digital technologies pose for an ethnographic methodology. Amongst these challenges are the difficulties inherent in mapping out a field site that effectively captures the complexity of online/offline connections and of developing a sufficient degree of immersion and co-presence for a rich understanding to be attained. Finally, the challenges offered by the emergence of mobile Internet, algorithmic filtering of information and unpredictable flows of data are explored. It is suggested that the ethnographer of the Internet can usefully position their task as being to explore a socially constructed yet technologically mediated landscape, immersing themselves in it, interrogating how others experience it and mapping the ways in which it becomes meaningful to those who navigate its complexities.

Simple single field inflation models and the running of spectral index

The BICEP2 experiment confirms the existence of primordial gravitational wave with the tensor-to-scalar ratio r = 0 ruled out at 70- level. The consistency of this large value of r with the Planck data requires a large negative running n＇s of the scalar spectral index. Herein we propose two types of the single field inflation models with simple potentials to study the possibility of the consistency of the models with the BICEP2 and Planck observations. One type of model suggested herein is realized in the supergravity model building. These models fail to provide the needed n＇s even though both can fit the tensor-to-scalar ratio and spectral index.