论对话教学视野中的英语阅读课堂提问策略

相对于传统的"独白式"教学而言,对话教学是一种尊重主体性、体现创造性、追求人性化的教学.提问是课堂教学中实施对话的基本方式,是英语阅读教学重要组成部分.传统的英语阅读课堂存在忽视学生提问和提问的效果等种种问题.从对话教学的视野来看,英语阅读课堂提问应注重开放性、过程性、情境性和探究性,让学生更透彻地读懂文本,从而提高英语阅读理解能力.参11.     

网络教学平台在独立学院英语教学改革中的辅助作用

传统英语课堂教学模式已不能适应社会发展的要求,大学英语的教学改革势在必行.该文针对湖南某高校独立学院英语教学中遭遇的困难,探讨如何发挥网络教学平台的作用,逐步改变传统的讲授模式,以实现学生英语综合能力的提高.     

课堂学习共同体视野下高职生的主体性培育——基于公共英语课程教学实践

当前高职教育教学实践大多忽视学生主体性培育,造成学生主体性残缺不全,这种现实违背了素质教育的宗旨.为改变这种状况,结合公共英语课程教学实践,英语教师借助于课堂学习共同体,探索对高职生进行主体性培育的路径.英语教师要走下讲台,为学生主体性发挥创设环境；提供实践活动情境,唤醒学生的主体意识；借助于小组合作学习,促进学生主体参与,发展主体性能力；开展元认知策略训练,激发学生的自我主体性培育.     

高职非英语专业学生口语学习的心理因素分析及对策

英语教学的最终目标是是培养学生的语言应用和交流能力.教育部颁发的《高职高专教育英语课程教学基本要求》明确提出了"以实用为主,以应用为目的"的教学思想,在英语教学中,口语教学已经受到越来越高的重视,很多学习方法也将口语作为英语学习的突破口,因此,作为一名英语教师,如何使学生真正具备实际语言交流能力并且适应社会经济发展最新需求,是需要认真思考的问题.就高职非英语专业学生口语学习的存在问题的心理方面的因素进行分析,并提出相应的策略.     

高职《园艺产品贮藏加工》学生创新能力研究与实践

为培养学生创新能力,结合《园艺产品贮藏加工》教学,通过改革传统的教学模式,构建理论为实践服务的实践教学主体教学体系;理论教学融入创新教育,培养学生的创新意识;实验实训,提高学生熟练的操作能力;设计综合实验、培养学生创新能力;结合科学研究、培养学生创新能力.结果表明,能较好地提高学生的综合开发及创新能力.     

浅谈ESP理论对高职英语课程设计的启发

分别对我国高职英语课程的发展情况以及ESP理论作了简要介绍,提出了将ESP理论应用于高职英语课程的设计的设想,并且对其可行性进行了试探性的研究,提出高职英语课程开发中在需求分析的基础上确定教学目标,利用任务教学法进行教学以及英语课程开发团队由英语教师和专业教师共同组成的观点.参9.     

高职英语教师在教学中的中介作用

费厄斯坦的中介理论指出：教师在教学中承担的中介角色应当是学生知识建构的中介者和帮助者．从新形势下的高职英语教学的特殊性及其现状出发，根据中介理论，分析了高职英语教师的中介角色，并探讨了如何有效地发挥其中介作用．参9．     

基于Packet Tracer模拟器构建计算机网络课程教学平台

介绍Packet Tracer模拟器的特点和如何使用,对职业技术教育中使用Packet Tracer模拟器教学进行分析,并对课程教学中的理论教学、实践操作和教学考核几个环节中使用Packet Tracer模拟器构建计算机网络课程教学平台进行了研究,使课程教学在现有的教学条件下能更好的被学生所接受,让学生能更好、更快掌握相关技能,拥有较强的实践操作能力.图6,参7.     

高等数学教学与创新能力、实践能力的培养

高等教育的主要任务是培养具有创新精神和实践能力的高级人才,而高等数学在大学课程体系中占有十分特殊地位.在高等数学教学中培养学生的创新能力和实践能力的途经有:确定高等数学教学理念;重视知识过程教学;重视数学思想方法的渗透;加强数学建模教学;重建教学评价体系.参5.     

浅谈英语节奏特点

从英语是一种重音节拍语言入手,对英语节奏的特征,模式及功能进行了分析,阐明了英语节奏对英语音长和语速的影响,提出了教授学生掌握好英语节奏的方法和策略.     

On the behaviour of the residence time at the bottom of the mixed layer

To understand why the findings of Deleersnijder et al. [(2006), Environ Fluid Mech 6: 25–42]—the residence time in the mixed layer in not necessarily zero at the pycnocline—are consistent with those of Delhez and Deleersnijder [(2006), Ocean Dyn 56:139–150]—the residence time in a control domain vanishes at the open boundaries of this control domain—, it is necessary to consider a control domain that includes part of the pycnocline, in which the eddy diffusivity is assumed to be zero. Then, depending on the behaviour of the eddy diffusivity near the bottom of the mixed layer, the residence time may be seen to exhibit a discontinuity at the interface between the mixed layer and the pycnocline. If such a discontinuity exists, the residence time is non-zero in the former and zero in the latter. This is illustrated by analytical solutions obtained under the assumption that the eddy diffusivity is constant in the mixed layer.     

Observations on the function of the glands of the foot of the pediveliger of Ostrea edulis during settlement

The use during settlement of secretions of the 9 different types of gland in the foot of the pediveliger of Ostrea edulis L. was examined experimentally. During settlement, there is a progressive decrease in the crawling speed of the larva and a strengthening of its bond with the substratum. Both changes are related to (a) a change from ciliary to muscular pedal locomotion; (b) the increasing acidity and viscosity of the mucoid secretions used; (c) the secretion of a byssus thread by the glands of the byssus duet; (d) changes in the form and composition of this byssus. At the termination of settlement, the entire contents of 2 types of gland are discharged. Their secretions give rise to the cement which permanently fixes the larva to the substratum. The 9 types of gland are utilised sequentially in a manner closely related to the 6 phases recognised in settlement behaviour.     

Mining of the forest and the time path of the price of timber

The paper analyzes the effect of transportation (site specific) costs and the effect of mining (depletion) of the forest on the time path of the price and of the net price of timber in two forestry models. The models differ in that one has zero costs and the other has positive costs. The analyses yield the standard mining theory results for certain cases. They also yield extentions of these results for cases with growth of the harvested trees and/or regeneration on the harvested land. The paper concludes, as one would expect, that the theory of the mine is useful in analyzing the time path of the price of timber.     

Adjusting the economy to the new energy realities of the second half of the age of oil

Our research indicates that, due to the depletion of conventional, and hence cheap, crude oil supplies (i.e. peak oil), increasing the supply of oil in the future would require exploiting lower quality resources (i.e. expensive), and thus will most likely occur only at high prices. This situation creates a system of feedbacks where economic growth, which requires more oil, would require high oil prices that will undermine that economic growth. We conclude that the economic growth of the past 40 years is unlikely to continue unless there is some remarkable change in how we manage our economy.     

豪猪消化系统的解剖研究

为了了解豪猪的消化生理,为豪猪的人工饲养技术研究提供基础依据,以达到高效饲养豪猪的目的,笔者对豪猪的消化器官进行了系统解剖研究.结果表明:豪猪的胃为单室胃.盲肠很发达,这与其能够消化植物纤维有关.豪猪肝脏很发达,其重量为402 g,是其体重的4.59%,肝脏分叶多而明显.     

刍议医院资产管理的现状及其对策

医院的固定资产和流动资产是医院赖以生存和发展的基础,是一项非经营性国有资产．目前公立医院固定资产、流动资产管理现状不容乐观,针对这种状况,首先分析问题形成的原因,然后提出管理的措施或建议,从而使资产管理工作规范化、制度化、科学化,使有限的卫生资源发挥出最大的社会效益和经济效益．参3．     

Stimulation of fat-body production in the polyps of the coralPocillopora damicornis by the presence of mutualistic crabs of the genusTrapezia

A mutualism exists between the xanthid crabs of the genusTrapezia and their host corals,Pocillopora damicornis. It has previously been established that these obligate coral residents benefit the coral hosts by defending them against echinoderm predators and by increasing the survival of polyps located deep between the coral branches. In turn, the corals apparently benefit the crabs by producing lipid-filled structures on which the trapezid crabs feed; these fat bodies may contain some of the lipid which in previous studies of coral metabolism has been termed excess. It was determined by experiments conducted at the Hawaii Institute of Marine Biology that the presence of crabs in colonies ofP. damicornis stimulates the polyps to produce the lipid-filled fat bodies; removal of crabs causes corals to cease producing fat bodies. A structure very similar to the fat bodies ofP. damicornis has been reported inAcropora durvillei. Both of these coral genera ordinarily possess xanthid-crab mutualists. This association between branching corals and crustaceans may have evolved because corals of these genera provide shelter among their branches and because these shallow-water corals are evidently capable of releasing lipid which is excess to the corals' metabolic needs, but which can be utilized by the crabs.     

Splitting the tail of the displacement kernel shows the unimportance of kurtosis

Animals disperse in space through different movement behaviors, resulting in different displacement distances. This is often described with a displacement kernel where the long-distance dispersers are within the tail of the kernel. A displacement with a large proportion of long-distance dispersers may have impact on different aspects of spatial ecology such as invasion speed, population persistence, and distribution. It is, however, unclear whether the kurtosis of the kernel plays a major role since a fatter tail also influences the variance of the kernel. We modeled displacement in landscapes with different amounts and configurations of habitats and handled kurtosis and variance separately to study how these affected population distribution and transition time. We conclude that kurtosis is not important for any of these aspects of spatial ecology. The variance of the kernel, on the other hand, was of great importance to both population distribution and transition time. We argue that separating variance and kurtosis can cast new light on the way in which long-distance dispersers are important in ecological processes. Consequences for empirical studies are discussed.     

Considerations of temperature in the context of the persistence classification in the EU

Simulation degradation studies for industrial chemicals, biocidal products and plant protection products are required in the EU to estimate half-lives in soil, water and sediment for the comparison to persistence criteria for hazard (P/vP) assessment, and for use in exposure assessments. There is a discrepancy between European regulatory approaches regarding the temperature at which degradation half-lives should be (1) measured in simulation degradation testing of environmental compartments, and (2) compared to the P/vP criteria. In this paper, an opinion is provided on the options for the experimental temperature and extrapolation to other conditions. A review of the historical development of persistence criteria did not give conclusive evidence of the temperature at which the half-lives that underpin the P-criteria were measured, but room temperature is likely. Half-lives measured at 20 °C are in line with the intentions of some international agreements, but in the EU there is a continued political debate regarding the relevant temperature for comparison with persistence criteria. Measuring degradation at 20 °C has the advantage that metabolites/transformation products can be identified with greater accuracy, and that kinetic fits to determine half-lives for parent compounds and metabolites carry less uncertainty. Extrapolation of half-lives to lower temperatures is possible for assessing environmental exposure, but the uncertainty of the persistence classification is smaller when measured half-lives are used for direct comparison with P/vP criteria, without extrapolation. Model simulations demonstrate the pattern of concentrations that can be expected for realistic worst case climate scenarios in the EU based on the half-life of 120 days in soil at 20 °C and of 40 days in water at 20 °C, and their temporal and spatial variability.