基于两种算法的天然气管网运行优化技术

为了保证管网能够安全、高效、经济地运行,建立了基于两种优选算法的天然气管网优化模型。在对比了现有各种优化算法的基础上,选用改进线性逼近法和序列二次规划法作为天然气管网运行优化研究的算法,分析了两种算法的原理,并以运行能耗最低为目标进行优化计算研究。为了既能满足生产需求,降低算法本身对目标函数和约束条件的依赖性,又能够保证计算效率和稳定性,优选出序列二次规划法,从生产实际出发建立一套通用性较强的天然气管网稳态运行优化模型,也为软件开发提供前期的数据分析。     

层次分析法在《绩效管理》课程的教学思路及案例解析

《绩效管理》课程是人力资源管理专业的专业核心课程之一,该课程的重点内容是利用定性和定量方法对组织内的人员进行绩效考核与评价。由于此部分内容涉及较多的统计学的综合评价分析原理及步骤,在教学过程中师生普遍反映有一定的难度。究其原因,主要在于学生未能将综合评价分析方法与绩效考核流程相结合。文章归纳总结了综合评价方法在绩效考核课程的运用思路,其中关键点是构建评价指标体系和估算权重,并通过案例展示了层次分析法(AHP)在绩效考核中的教学思路及步骤以便于教学。     

教师专业发展的路径分析与支持策略——基于教师学习的研究

教师质量是教育发展的生命线,教师学习则是提高教师质量的基本途径,开展教师学习研究对教师的专业发展具有重要意义。教师学习研究不仅要注重如何激发教师自身学习的积极性和主动性,更要高度关注和重视教师自身的专业发展问题。对教师学习的目的、内容和方法进行研究,必须立足教学反思性实践,关注教师情感需要的诉求与表达,重视对教师人格情感的关怀,通过提高教师的“情”与“行”来应对现实中出现的教师质量问题和突破教师专业发展的瓶颈,使教师成为终身学习的典范,促进教师的成长成才。     

基于分形方法估算部分商为a或b的连分数集维数

连分数的展开式具有结构上的自相似性,部分商满足一定条件的连分数构成的集合是分形集,通过构造迭代映射的方法估算其Hausdorff维数.     

基于小波阈值去噪的改进方案

在D.L.Dohono提出的软、硬阈值去噪方法的基础上,提出了两种新的阈值函数,并对小波阈值的去噪算法进行仿真实验研究。首先分析软、硬阈值去噪法及最新的阈值改进算法,在此基础上提出两种改进小波阈值去噪算法,然后用提到的各种小波阈值去噪算法对指定图像进行去噪仿真研究,最后基于实验结果进行对比分析。新阈值函数在图像去噪方面要优于传统的软、硬阈值函数。能更好的保留原始图像信息,提高峰值信噪比并降低均方误差。     

Drama to Enhance the Speaking Skills of EFL/ESL Learners

The paper starts with introducing the definition of drama. Then, many drama techniques are introduced. Next, Advantages of using drama techniques are discussed. Nonetheless, some problems in using drama in ESL/EFL are pointed out. The paper concludes that drama offers a useful educational tool to support communicative language teaching for EFL/ESL learners.     

A Probe into the Influence of English Language Teaching on Chinese Students’Language Development

A problem has been arising among many English learners who would have frequent contact with English culture and the language. That is: they are inefficient in both English and Chinese. It is extremely obvious as far as Chinese students' language development is concerned. In my paper, I want to explore how English language teaching(ELT) influences Chinese students' language development.     

The Cultivation of Intercultural Communication Competence in College English Teaching

During the long history of foreign language teaching and learning,educators focus just on the same question:how they could have the learners learn and use the target language effectively.In traditional college English teaching,much attention is paid to language knowledge,whereas the cultural background of the language is ignored.In recent years,many people begin to realize the importance of intercultural communication competence(ICC).The thesis first gives a general introduction to the thesis,states the definition of intercultural communication(IC)and ICC.Then the thesis analyzes the factors affecting ICC cultivation.At last,the thesis presents the significance of ICC cultivation and puts forward some suggestions.     

Washback of Task-based Communicative Language Test (II)

The essay aims at revealing the washback effect of task-based communicative language test (TBCLT) in a vocational college, with the further purpose to work out some ways to promote positive washback ef...