减租减息与晋冀鲁豫抗日根据地土地关系的变动

晋冀鲁豫边区各地土地集中趋势日益明显,封建剥削依然沉重,存在着减租的迫切性和实践空间。边区各战略区结合本区实际,在维护统一战线的原则下,确定减租具体政策。减租运动对边区土地关系的变动产生了积极影响。地主的土地占有比重显著下降,中农、贫农的土地占有显著增加,农业生产率相应提高。但是,由于减租斗争对地主阶级采取的是经济手段的削弱,所以土地占有状况仍然不乐观,有待通过更深入的土地改革获得实质性的解决。     

试论闽南方言指示词“只”的来源

闽南方言近指指示词"只"应源自章母之韵平声的"之"。"只"的基础语音形式为[tsi],在闽南各方言区音同或音近于"之";由语音演变规律来看,"只""之"声韵相符;由历时的语法功能来看,"只"有传承自"之"的痕迹;"只""之"声调有异由禁忌词避讳造成。     

我国建筑节能财税政策研究

我国建筑节能虽取得了一定成就,但依然存在能耗大、能源利用率低等问题。分析其存在的原因,财税政策对于建筑节能支持力度不够是重要因素之一,包括我国对建筑节能的财税激励作用较小、激励范围窄、政策设计有缺陷等。立足我国国情及建筑节能财税政策现状,从税收优惠、财政补贴以及相关配套措施等方面提出促进建筑节能发展的对策建议。     

基于建构主义学习理论的教师专业发展

建构主义学习理论是当代主流的学习理论,其核心观点包括以下三个方面:学习是学习者的主动建构过程;学习依赖于个体已有的经验以及真实的情境;学习离不开社会性的交往和对话。以建构主义学习理论为基础的教师专业发展呈现出如下特征:教师专业发展是教师主动建构专业知识的过程;教师专业发展必须依托于真实的实践情境;教师专业发展离不开教师与专业伙伴的合作与对话。     

MIMO-OFDM 系统中同信道干扰抑制

针对 MIMO-OFDM 系统,提出了一种最大后验概率的信道矩阵和干扰协方差矩阵估计方法,并设计了迭代求解算法。利用所估计的信道矩阵和干扰协方差矩阵,采用 IRC 接收机完成同信道干扰的抑制。利用干扰协方差阵的共轭对称与半正定等特性,提出2种干扰协方差矩阵的处理方案以提高其估计精度。第1种方案将每个子载波上干扰协方差矩阵表征为一系列时域矩阵之和,第2种方案将每个子载波上的干扰协方差矩阵用低阶模型来建模,其中模型阶数通过最小描述长度算法估计。仿真结果表明了所提方案的有效性。     

国际视野下督学责任区制度发展与模式研究 ——基于对湖南省的调研

督学责任区制度是教育督导制度的重要组成部分,各主要发达国家的教育督导制度都包含督学责任区制度这一内容.近年来在我国开始推行这一制度的过程中,既借鉴了国外的有益经验,又形成了我国自己特色,进行自己的创新,特别是湖南省在督学责任区建设方面卓有成效.通过调研,我们发现湖南省督学责任区制度方面主要有三种模式:异地集中办公模式(醴陵模式);驻校模式;分离模式.督学责任区制度在学校常规督导、规范办学行为、开辟家长反映意见途径等方面发挥了积极作用,但也存在着督学责任区职能定位、人员专业化和模式的合理性等问题.     

路由优化策略在命名数据网中的研究

命名数据网络(named data network,NDN)是正在研究中的以数据为中心的下一代互联网络,而路由转发机制是NDN的核心问题。为了更好地提高网络的整体性能,提出了端口优先级路由策略,基于蚁群优化算法,根据每个路由接口的转发概率分别设置转发接口优先级,引入兴趣包的错误反馈信息包,降低用户的请求失效率。实验结果表明,端口优先级路由策略在网络平均延迟和数据包投递率方面优于邻居缓存路由(neighbor cache explore routing,NCE)策略,验证了端口优先级路由策略在NDN网络中的有效性。     

The influence of teacher education on mentor teachers’ role perception in professional development schools

Apprenticeship and professional development schools (PDSs) are two models for teacher education. The mentors that are the focus for this research completed their initial teacher training through one of these models and now mentor in PDSs. The paper reports on how the way in which they were trained as student teachers influenced their role perceptions. The findings suggest that mentor teachers who were trained via the PDSs model have a broader conceptual understanding of their role perception.     

Voice over distance: a case of podcasting for learning in online teacher education

This paper reports on a case study of an online pre-service teacher education course in a New Zealand university aimed at exploring the potential of student-generated podcasts as a form of interactive formative assessment at a distance. The study was part of a wider two-year funded project with the overall goal of documenting, developing, and disseminating effective and innovative e-learning practice. Findings from lecturer and tutor interviews, student focus group (FG) discussion, and course evaluations indicate that the podcasting task provided opportunities for the course lecturer, tutors, and students to learn and share ideas with one another. The experience empowered students to develop the skills and confidence to initiate more independent inquiry into technologies to support their pedagogical purposes. The study contributes to a better understanding of the skills, dispositions, and knowledge needed to prepare teacher candidates for teaching-learning contexts where information and communication technologies are increasingly pivotal.