基于高光谱遥感特征参数的樟树幼林叶绿素a含量估算模型

以ASD公司生产的手持式野外光谱辐射仪测量樟树幼林的冠层光谱,同时对观测叶片进行叶绿素a含量的测定。利用统计相关分析法,分析了高光谱遥感特征参数与叶绿素a含量的相关关系,在此基础上建立了高光谱遥感特征参数的樟树幼林叶绿素a含量估算模型,并对模型进行了精度检验。结果表明:樟树幼林叶绿素a含量与Db、Rg、Rg/Ro、(Rg-Ro)/(Rg Ro)之间的相关系数达到了0.01极显著性检验水平;建立它们与叶绿素a含量的估算模型,通过精度检验,选择出最适合叶绿素a含量估算的高光谱模型:y=exp[1.027 (-348.942)×Db]。     

浅论刘禹锡咏史怀古诗的艺术个性

刘禹锡是中唐独具特色的优秀诗人,在我国诗歌史上有相当重要的地位,其诗在韩孟、元白诗派外独辟蹊径,自成一派,影响巨大。这与刘禹锡自觉总结诗歌理论是分不开。试以其自己的诗歌理论为指导,以其咏史怀古诗为中心,通过分析其咏史怀古诗内容的旨意含蓄,风格的取境精练、语言警策、想象丰富来显示刘禹锡独特的艺术个性。     

高校德育内容建构的历史溯源与审视

高校德育内容是依据高校德育目标的要求加以选择和建构的。它是高校德育目标要求的具体展现。高校德育内容有其独立的历史轨迹。追溯高校德育内容建构的历史轨迹,对于反省和审视高校德育内容建构的经验与教训提供了基础。与此同时,对于合理地建构现代高校德育内容也提供了一个非常重要的历史依据。     

基于学习者风格的自适应网络教学平台设计

网络教学平台为学习者提供了不受时空限制的个性化学习,但传统网络学习平台往往忽略了学习者的个体差异,导致其学习自主性不高,从而影响了网络教学的质量.自适应网络教学平台运用学习者风格理论对学习者进行分析,动态生成学习路径和构建学习内容,形成适合于学习者学习风格的课程内容组织形式,在传统网络教学平台的基础上更好地体现因材施教的原则,有利于充分调动学生的积极性,提高学习质量.     

Teacher professional development through collaborative action research: impact on foreign English-language teaching and learning

In 2011 we, a group of English-as-a-foreign-language teachers at a secondary school in Argentina, decided to investigate our teaching practices through collaborative action research so as to improve our students’ learning opportunities and thus revitalise English-language teaching in our context. We implemented and evaluated the integration of content and language learning in our classrooms through the development of our own materials. The experience revealed a growth in professional development and how our motivation and autonomy influenced our students’ motivation and language development. In our attempt to disseminate our experience as a group, this report particularly focuses on the evaluation facets of our collaborative action research project so as to encourage other teachers and teacher-researchers to adopt collaborative action research to improve their own practices.     

Teaching the language of mathematics at three levels of an English-medium primary school

This study, situated in a multilingual, English-medium educational context, draws on theory from mathematics and language education to capture teachers’ perspectives on the place of language in their mathematics pedagogy. The benchmark study explored this topic through surveying and interviewing teachers. Additionally, it sought to relate teachers’ views to their practice by focusing on observing three teachers’ mathematics lessons at primary one, three, and five. Findings are that mathematics teachers placed importance on teaching language, being specifically concerned with language as input and comprehension. They taught vocabulary and reading skills in supportive ways explicitly yet differently at the three grade levels. Particularly at the lower levels, teachers contextualised language in the concrete examples employed for mathematics teaching. At all three levels, prominence was given to teaching pupils how to read word problems as well as how to solve them. However, at primary three, a tension was observed between the two aims of teaching mathematical vocabulary and teaching the reading skills for word problems. This paper illustrates the tension and discusses its possible causes.     

Academic failure of first-year engineering and technological students in India and assessment of motivation factors – a case study

This study has been conducted to show that there is a recent trend in engineering colleges in India that students who are considered to be highly intelligent show poor academic performance during their 1st year. This article is proposed to examine the role of motivation factors such as teaching methods and learning material in the academic performance of engineering and technological students in India. A test was carried out among engineering students. A total of 200 male and female students participated in this test. A 2-group discriminator analysis was done to analyse the data. The results showed that there was a significant correlation (p = 0.000) between motivation factors and academic performance of engineering students. The higher the rating of these factors by the students, the higher their performance.     

消化比浊法测定梅菜含硫量

梅菜属于腌菜的一种,口感好、营养价值高,作为一种家常菜常出现在寻常百姓的饭桌上.水源、土壤和空气中SO2含量超标,添加硫含量超标的添加剂或使用硫含量超标的化肥等均会导致梅菜硫含量超标.市售梅菜硫含量是否超标已经成为广大梅菜食用爱好者和有关质量管理部门重点关注的问题之一.为了保障广大梅菜食用爱好者的利益与健康,质量管理部门和梅菜生产产家迫切需要一种快速、便捷的检测梅菜硫含量的工艺.本文采用硝酸-高氯酸消化法及硫酸钡比浊法对市售5种梅菜的硫含量进行检测,检测结果分别为9.09 mg/g、3.94 mg/g、3.85 mg/g、3.50 mg/g、3.51 mg/g.     

基于职业能力的高职公共英语实践教学研究

随着高等职业教育的快速发展,高职公共英语教学内容日趋突现职业化和实践性。本研究结合绍兴职业技术学院英语教学实际,从社会对职业性人才的现实需求和学生的就业来探讨高职公共英语实践教学,提出高职公共英语实践教学内容应职业化,实践教学平台应多元化。     

基于工作岗位的高职《光纤通信》课程教学内容改革

高等职业教育对于培养实用型高技能专门人才,促进我国社会进步和经济发展发挥着重要作用。本文从教学实际出发,结合多家通信企业对高职院校通信专业技能型毕业生需求的调研结果,着重阐述了基于工作岗位的《光纤通信》课程教学内容的选取方法、选取原则、针对性以模块化教学内容体系构成,为高职院校《光纤通信》教学提供可参考的建议和思路。