归一化卡诺图及其在时序网络设计中的应用     

黄茂祥 《湖州师范学院学报》1988,(6)

本文论述了触发器的文字激励表和状态控制函数的归一化卡诺图,指出它在求最简时序网络中能够简化设计过程,最后通过序列检测器和多模计数器设计说明归一化卡诺图的实际应用.  相似文献   

试论唐传奇的诗意结构与诗意美     

孙超  杨世明 《四川师范学院学报》2005,(3):22-26

唐传奇与唐诗，并称为“一代之奇”。它为何具有无穷的艺术魅力呢？本文试图通过“诗意结构”理论的提出和阐释来回答。唐传奇的诗意结构主要体现在其“幻设的诗性”、“存在的诗根”和“人性的诗魂”这三个意蕴层面上。三者和谐统一在作品中所产生的艺术效果——“诗意美”是唐传奇艺术魅力的核心。  相似文献   

高等院校评价教师系统框架之数据来源分析     

郝春林  高俊玉 《教育教学论坛》2020,(13):26-27

高校评教是高校教育教学管理中的重要一环。文章针对目前已有的评教系统数据源单一、数据使用不充分、教师反馈不及时、师生互动性欠佳、学生评教积极性不高等现状,提出了一个高校评教系统新框架,以评教结果的使用范围为目的,反推出评教数据来源应具备多次性和多样性。每学期多次评教,实现教师与学生的互动,促进学生评教积极性,促进教师及时改进教学方法。评教人员除了学生之外,还应包括督导专家和往届生。  相似文献   

Genetic linkage map ofBrassica campestris L. using AFLP and RAPD markers     

Lu Gang  Cao Jia-shu  Chen Hang 《浙江大学学报(A卷英文版)》2002,3(5):600-605

A genetic linkage map comprised of 131 loci was constructed with an F₂ population derived from an inter-subspecific cross betweenBrassica campestris L. ssp.chinensis cv. ‘aijiaohuang’ and ssp.rapifera cv. ‘qisihai’. The genetic map included 93 RAPD loci, 36 AFLP loci and 2 morphological loci organized into 10 main linkage groups (LGs) and 2 small groups, covering 1810.9cM with average distance between adjacent markers being approximately 13.8cM. The map is suitable for identification of molecular markers linked to important agronomic traits, QTL analysis, and even for marker-assisted selection in breeding programs of Chinese cabbage and turnip. Project (No. 39870509) supported by the National Natural Science Foundation of China  相似文献   

高校学生评教中师生间认知性冲突的实证研究     

丁福兴 《河南职业技术师范学院学报(职业教育版)》2005,(5):9-12

本研究采用自编问卷对苏州科技学院的1 000名学生及400名教师进行了调查,以考察他们在学生评教诸多问题上的认知性差异与冲突.经过对两个样本在各个项目上的均值差异显著性检验,结果表明:师生之间存在着价值性与程序性两类认知性冲突,且在价值性认知冲突上表现出根本性的分歧,而在程序性认知冲突上表现出较高的相容性.  相似文献   

“这”、“那”类的隐性回指     

王道英  贺筠 《成都师专学报》2005,24(4):84-88

“这”、“那”指代词本身没有固定的含义，它们的意义随所指对象的变化而变化。“这”、“那”隐性回指最主要的特征在于指示代词的所指不是明显地出现，而是隐含（implicit）在语句的隐性所指对象中，是一种语义上的衔接。回指项替换先行项以后，意义也会随之改变，这给语言的理解造成一定的困难。本文通过对一百万字语言资料的考察，主要探讨“这”、“那”类包括型、联想型和总括型三类隐性回指的所指规律或倾向性规律。  相似文献   

模糊等值理论在数据清理中的应用     

李华旸  刘玉葆  李又奎 《东南大学学报》2004,20(4):454-457

提出了规则合并的优化方法和重复记录聚类清除的方法.应用模糊等值理论,避免了传统等值理论非此即彼的僵硬方式,但清理过程中部分规则可能存在包含与被包含的关系,被包含的规则其等值度显然会相对较小,根据用户阀值提出了规则合并的优化方法,可减少重复记录的计算时间.基于同样的原因,规则间的包含与被包含关系将影响模糊等值度的误差分析,因此提出了利用忽略被包含的规则等值度提高误差分析精度的改进模糊等值理论误差分析方法.重复记录的核实通常需要人工逐条检测,易于出错,本文提出的聚类算法,可节省大量的用户劳动.最后给出一个实验,表明了规则优化的可能性.  相似文献   

Individual participant data meta-analysis of the impact of educational interventions on pupils eligible for Free School Meals     

Bilal Ashraf  Akansha Singh  Germaine Uwimpuhwe  Steven Higgins  Adetayo Kasim 《British Educational Research Journal》2021,47(6):1675-1699

Meta-analysis is the synthesis of findings from research projects, which enables an estimate of the average or pooled effect across various studies. This study presents findings from the intention to treat analysis for a series of educational evaluations in England using a two-stage meta-analysis with standardised outcome data and individual participant data meta-analyses. The research estimates the overall impact of educational trials on pupils eligible for Free School Meals (FSM) and the attainment gap in literacy and mathematics performance between FSM and non-FSM pupils based on analysis of 88 trials and data from over half a million pupils. For the meta-analyses, frequentist and Bayesian multilevel models were used to estimate the individual and pooled effect size across categories of explanatory variables such as age groups (key stages in England) and aspects of the type of interventions (one-to-one, small group, whole class). Results indicated that the overall impact of interventions on the literacy outcomes of FSM pupils was positive, with a pooled effect size of 0.06 (0.03, 0.08). However, for mathematics, no overall effect on FSM pupils was observed. Analysis of the attainment gap indicated that literacy outcomes for FSM pupils were improved by interventions marginally more than for non-FSM pupils (pooled attainment gap 0.01 (−0.01, 0.04)). The risk of bias assessment showed that estimates were consistent across different methodological approaches. Overall, evidence from this study can be used to identify, test and scale educational interventions in schools to improve educational outcomes for disadvantaged pupils.  相似文献   

Teaching first‐year statistics students with COVID‐19 real‐world data: Graphs     

Danri H. Delport 《Teaching Statistics》2021,43(1):36-43

It is said that a picture is worth a thousand words, but what about graphs? Although graphs have the potential to bring data to life, numerous studies show that learners struggle with graphical comprehension. Furthermore, many textbook examples on graphs are boring and appear meaningless to students. Students want to know more about something which is interesting, meaningful, and worth knowing, in other words, something relevant. With the outbreak of the novel coronavirus in December 2019, COVID‐19 is dominating the news worldwide, and the internet is flooded with visual presentations about the virus. To make statistics more fascinating and exciting, relevant and real‐world data such as these can be used in the classroom to stimulate the learning of important statistical concepts such as graphs. Curcio's three levels of graphical comprehension were used as a framework in this study, while the importance of developing a global view on distributions was also emphasized.  相似文献   

关于思维导图在初中化学实验复习中的应用研究     

崔继东 《天津教育》2021,(1):114-115

在初中化学复习课教学的过程中,为了加深学生对化学知识的理解,教师要合理运用思维导图的教学模式,将琐碎的知识点以图文的形式展现在学生面前,方便学生记忆的同时还能标注出知识的重点与难点,促使学生能高效解答实验习题。基于此,本文主要围绕初中化学复习课应用思维导图开展分析,并阐述了应用对策,仅供参考。  相似文献