马克思主义中国化初始论题中的三民主义评价

在20世纪30年代中国学术界的现代化讨论中,大多数学者认同了以社会主义为中国现代化的道路选择。与之相伴随的文化讨论又在＂西化＂、＂本位文化＂的争论中形成了＂中国化＂的命题。这就为马克思主义中国化创造了前提性条件。正是在这样的背景下,中国共产党人正确评价孙中山的三民主义,并使之与中国社会发展相贯通,提出了新民主主义理论。     

Online versus face‐to‐face learning: looking at modes of instruction in Master’s‐level courses

This study examined performance of Master’s‐level students in an online course in Cognition, Learning and Assessment and compared it with the performance of students in a face‐to‐face classroom setting of the same course (N = 70). Data were collected from six sections of the course over a two‐year period. The same professor taught all sections. Identical final exams plus two common assignments were used to determine whether there were differences in performance. An analysis of covariance, with graduate record exam scores as the covariate, was applied using each of the dependent variables. Students in the face‐to‐face class scored significantly higher on two out of the three measures.     

基于LPC2214的LED显示屏控制系统硬件设计

采用基于嵌入式实时操作系统的ARM微处理器技术,提出一种全彩LED显示屏控制系统硬件设计。该系统以ARM微处理器LPC2214为核心,完成显示数据传输与更新、循环扫描显示等功能。系统能实现全彩LED显示屏的异步控制,画质稳定,色彩分辨率高,刷新频率高,性能稳定、可靠。     

Quality Control in Online Courses

SUMMARY

There has recently been increased interest in the quality of online courses. Faculty from the School of Education at Marquette University suggest using social constructivist theories in the design and development of online courses and in the training and pedagogy of online instructors to ensure quality in online courses. Quality can be designed into online courses by focusing on complex tasks, using multiple perspectives, establishing a learning community, encouraging the social negotiation of meaning and providing assistance for learners at various levels. While good design can go a long way to ensure quality in online courses, the quality of the instructor is equally critical. Training instructors to establish a supportive climate, provide constructive feedback, and ask critical and probing questions leads to high quality online instruction.     

Online discussions in a doctoral research methods course: ‘Like a text by many authors’

In this mixed-methods study, we investigated how doctoral students used asynchronous online discussions that were added to a face-to-face research methods course. We focused specifically on what sociocognitive tools the students used and what they thought about the value of the online discussions for their learning. Our data included three online whole-class discussions from the course and students’ self-evaluations, which they completed three times during the semester. Our findings support the usefulness of online discussions in providing a site where students could draw on a rich repertoire of tools and strategies as well as on the knowledge of others to enhance their thinking and understanding of theory and research.     

基于CADe SIMU的三相异步电动机仿真分析

借助CADe SIMU仿真软件,设计了两台三相异步电动机运行控制电路,仿真结果显示,设计的电路符合控制要求,对实际电机控制系统的接线有一定的参考作用。CADe SIMU仿真软件操作简单,仿真结果形象直观,是学生学习电机控制系统的良好工具。     

基于USB2.0和FPGA的高速数据采集卡

介绍一种采用USB2.0接口与PC机进行数据传输的高速数据采集卡的设计。采集卡由可变增益放大器对采样信号进行预处理,使用异步并行的A/D转换技术实现40 Msps的数据采集,由FPGA实现时序控制和数据高速FIFO,由内嵌MCU的USB控制器实现USB2.0接口功能。文章给出了硬件的基本结构和软件固件设计的基本方法,并对用FPGA设计FIFO作了重点阐述,同时对使用异步并行A/D转换与使用采样率为40 Msps的ADC器件的采样数据在FIFO内的数据传输进行了时序仿真,分析了仿真结果。     

An Oral English Course Design From the Perspective of Autonomous Learning Concept

This study investigates the interactive and linguistic features of communication among university-level Chineselearners and their teacher in a network-based context. Collaborative learning through Computer-Mediated Communication(CMC) has pushed the quality of student’s writing skills in the ELT classroom whether the learning is in synchronouschat rooms or asynchronous email modes. The findings show a significant difference in writing proficiency developmentexisted between the experimental and control groups...     

Working in the Mathematics Frame: Maximizing the Potential to Learn From Students' Mathematics Classroom Discussions

The quality of students' mathematics classroom discussions is an important factor in determining mathematics classroom learning outcomes. Good mathematics classroom discussions provide an opportunity for ideas to be shared and developed, but not all mathematics classroom discussions produce these learning opportunities. In this paper I discuss three constructs (subject, purpose, and frame) and how they can be used to analyze and characterize the quality of students' mathematics classroom discussions in terms of the mathematics learning potential that those discussions provide. This revised version was published online in July 2006 with corrections to the Cover Date.     

健美操教学中运用“异步”教学法的研究

为进一步丰富健美操的教学方法和手段，提高教学质量，提高学生的学习兴趣和终身体育锻炼能力，通过文献资料法、归纳法等科研方法，并结合教学训练实践，就“异步”教学法的具体理论基础与特点及其在健美操教学中的作用一一阐述，为健美操教师在教学中提高理论作参考。