英语语体知识与大学英语教学

大学生入学时英语水平较以往有了提高,这就对大学英语教学提出了新要求,即英语的教和学不能局限于对课本中词句的讲解和篇章的分析,还要了解语体知识,分析各种文体文章的类别和在不同语境中的特点,使学生在实际运用中能够规范得体,从而提高英语综合运用能力。     

Global existence and blow-up of solutions to reaction-diffusion system with a weighted nonlocal source

In this paper, we study a semi-linear reaction-diffusion system with a weighted nonlocal source, subject to the null Dirichlet boundary condition. Under certain conditions, we prove that the classical solution exists globally and blows up in finite time respectively, and then obtain the uniform blow-up rate in the interior.     

论言语交际中语境的选择和操控

语境的生成是一个动态的过程,语境生成的动态性不仅体现在言语交际中参与者对相关语境要素的选择和调控上,也体现在言语交际活动之后双方对不同表意框架的选择上.该文通过对一起由手机短信所引发的争议的分析表明:言语交际的参与者为了达到特定的目的,可以对不同语境要素和表意框架进行选择,通过对语境的操控来影响释话人的行为.     

《聊斋志异》中“龁石”篇的本事考证

《聊斋志异》中"龁石篇"记载的是道士王嘉禄"啖石为饭"一事,其"本事"源于王渔洋的《池北偶记》。主人公王嘉禄史上实有其人,"龁石"的细节与中医书籍里所记载的"服云母"养生法完全吻合,王道士的"遍体生毛"又与古籍记载相映照。"龁石"篇是对道医体系中"服云母"养生法的记录。     

基于FPGA与MC8051 IP核的可调窄脉冲激光泵浦源的研制

介绍了一种基于FPGA与MC8051IP核的可调窄脉冲激光泵浦系统.该系统主要作为低重复频率光信号的放大器泵浦源.系统采用MOSFET作为功率开关管驱动半导体激光器发出的光脉冲作为激光泵浦源,可驱动大功率的LD,最大驱动功率可达30W.利用高速FPGA芯片（EP2C8）和VHDL语言,设计激光泵浦源的窄脉冲数字控制电路.利用MC8051软IP核实现智能控制,系统输出脉冲周期、脉冲宽度以及脉冲幅度都可调.系统采用多种有效保护措施,性能稳定可靠.     

高中信息技术教师专业知识来源的调查与分析

该研究借鉴马云鹏教授提出的专业知识框架即教育理论知识、学科知识、课程知识和学科教学法知识,以问卷调查的方式测查高中信息技术教师不同知识来源对他们的专业知识发展的促进作用。结果显示:"自身教学经验与反思"、"和同事的日常交流"、"教学观摩活动"、"浏览网络"是获取专业知识非常重要的来源;"虚拟共同体的交流"、"自学专业书刊"和"在职专业培训"是获取专业知识比较重要的来源。"教育见习和实习"是获取学科知识和教育理论知识比较重要的来源。而"入职后的学历补偿教育"和部分职前教育课程对专业知识发展的作用并不明显。基于以上研究发现,提出促进高中信息技术教师专业知识发展的建议。     

文本内外的双重幻灭——关于《生死场》、《呼兰河传》和《小城三月》的连续性解读

站在女性关注的立场,萧红的《生死场》、《呼兰河传》和《小城三月》这三部作品之间有着紧密的连续性。一方面,顺着作品本身的思路,这三部小说表达着萧红对于女性由受压迫到觉醒再到幻灭的命运的思考,另一方面,联系萧红的亲身经历,这三部小说又埋藏着她自身理想一步步破灭的悲剧。文本内的被思考者和文本外的思考者的双重悲剧呼吁着整个社会和女性自身对女性独立给予更多的关注和更大的空间。     

英汉小句性省略对比研究——以《苔丝》语篇为例

省略具有语篇衔接功能,小句性省略是省略的极致,表达简洁明了。文章以哈代的小说《苔丝》为语篇语料,从韩礼德和哈桑(Halliday&Hasan)(1)(2)的语篇衔接观出发,以英汉对比方式分析英汉语篇中小句性省略的异同,阐明英汉小句性省略差异的原因。     

曾慥《乐府雅词》不录晏殊等人词之探测

曾慥《乐府雅词》作为现存的一部宋人选宋词,其所选甲乙与后世公论不甚相符,尤其是不选苏轼词,引起了后人的广泛质疑和不同理解,且现代学术界看法不一。文章在《曾慥〈乐府雅词〉不录苏轼词之探测》一文的基础上,再对晏殊、晏几道、黄庭坚、秦观几人词的落选原因进行探析,认为晏殊、晏几道二人词的落选和柳永词落选的原因相似,乃因其词作不符合曾慥的"雅词"标准所致;而不选黄庭坚、秦观二人词和苏轼词落选的原因大致相同,并不是曾慥本人的主观想法,而是受当时的选源所限。     

Classroom action research on formative assessment in a context-based chemistry course

Context-based science courses stimulate students to reconstruct the information presented by connecting to their prior knowledge and experiences. However, students need support. Formative assessments inform both teacher and students about students’ knowledge deficiencies and misconceptions and how students can be supported. Research on formative assessments suggests a positive impact on students’ science achievement, although its success depends on how the formative assessment is implemented in class. The aim of this study was to provide insights into the effects of formative assessments on achievement during a context-based chemistry course on lactic acid. In a classroom action research setting, a pre-test/post-test control group design with switching replications was applied. Student achievement was measured in two pre-tests, two post-tests and a retention test. Participants were Grade 9 students from one secondary school in the Netherlands. Repeated-measures analysis showed a significant effect of formative assessments on students’ achievement. During the implementation of the formative assessments, intriguing discussions emerged between students, between students and teacher, and between teachers. Adding formative assessments to context-based approaches reinforces their strength to meet with the current challenges of chemistry education. Formative assessments affect students’ achievement positively and stimulate feedback between students and teacher(s).