科技政策术语自动识别技术初探     

曾 文李智杰  王小玉董 诚 《中国科技资源导刊 (中国信息导报)》2017,(3):20-25

在对科技政策领域术语的特点分析基础上,提出一种适用于科技政策领域的术语识别方法,即结合科技政 策术语的语言特点,采用统计计算的方法进行两次术语过滤过程,实现科技政策术语的自动识别。实验结果表明,本 文提出的基于科技政策术语语言特点和统计计算相结合的科技政策术语自动识别的方法具有一定的可行性,将用于科 技政策词典的构建和科技政策文本内容的深层次语义分析。  相似文献   

Sample, Random and Variation: The Vocabulary of Statistical Literacy     

Jane M. Watson  Ben A. Kelly 《International Journal of Science and Mathematics Education》2008,6(4):741-767

This paper considers the development of school students’ ability to define three terms that are fundamental to statistical literacy: sample, random, and variation. A total of 738 students in grades 3, 5, 7, and 9 were asked in a survey to define and give an example for the word “sample.” Of these, 379 students in grades 7 and 9 were also asked about the words “random” and “variation.” Responses were used to describe developmental levels overall and to document differences across grades on the understanding of these terms. Changes in performance were also monitored after lessons on chance and data, emphasizing variation for 335 students. After 2 years, 132 of these students and a further 209 students who were surveyed originally but did not take part in specialized lessons, were surveyed again. The difference after 2 years between the performance of students who experienced the specialized lessons and those who did not was considered, revealing no differences in performance longitudinally. For students in grades 7 and 9, the association of performance on the three terms was explored. Implications for mathematics and literacy educators are discussed.  相似文献   

Connecting Science and Mathematics: The Nature of Scientific and Statistical Hypothesis Testing     

Anton E. Lawson  Michael Oehrtman  Jamie Jensen 《International Journal of Science and Mathematics Education》2008,6(2):405-416

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出生性别比的统计质量控制   总被引：1，自引：0，他引：1  

赵开斌  吕洪升 《巢湖学院学报》2008,10(3):1-7

本文试图突破"出生人口性别比计算必须依据大样本"的观点.在限定条件下,采用小样本推断方法,借助统计质量控制,对出生人口性别进行实时统计分析。  相似文献   

试述中华苏维埃政权是新民主主义社会的第一个雏形     

王永江 《温州职业技术学院学报》2008,8(4)

毛泽东关于“工农武装割据”的思想,为寻找适合中国国情的武装夺取政权的革命道路奠定了基础。“以乡村为中心”观点的提出为新民主主义革命的胜利和新民主主义社会的建立找到了路径。中华苏维埃共和国临时中央政府的建立,标志着一个与国民党大地主大资产阶级专政的国家政权完全对立的工农民主专政的新型国家政权的诞生。它是解放后建立的新民主主义社会的第一个雏形。  相似文献   

健康大数据时代下的医学生统计素养培养——“医学统计学”课程思政实践初探     

许茜  刘志臻  俞向梅  蔡晶 《教育教学论坛》2021,(12):57-60

为提升新时代健康大数据的管理和研究水平,适应健康大数据时代对未来医生的新要求,医学生应具备良好的统计素养。在“医学统计学”课程的授课实践中,教师应从统计意识、统计知识、统计能力、统计道德四个方面对医学生统计素养进行引导渗透,发挥课程的育人作用。  相似文献   

中国非金融上市公司股权结构统计分析与公司治理改革建议     

李角奇 《预测》2007,26(6):22-26

本文采取了抽样调查方法，对中国非金融上市公司股权结构进行了实证分析，揭示了中国非金融上市公司所具有的股权结构高度集中、国有股东居于控制地位、大多股东难以制衡少数控股股东等基本特征，根据股权结构的特殊性对公司治理模式选择与创新的决定作用，提出了中国公司治理改革的方向和建议。  相似文献   

浅谈现行统计调查存在的问题及建议     

刘冬 《商洛师范专科学校学报》2006,20(2):127-128

随着我国政治经济形势的发展，党和国家决策需要统计部门提供的数据越来越多。依靠以往已实行的普查、抽样调查等方法进行统计数据收集，已不能适应形势发展之需，因此，对统计调查中存在的问题必须进行分析，找出解决这些问题的办法。  相似文献   

Allocating Sample Sizes to Reduce Budget for Fixed-Effect 2×2 Heterogeneous Analysis of Variance     

Wei-Ming Luh  Jiin-Huarng Guo 《Journal of Experimental Education》2016,84(1):197-211

This article discusses the sample size requirements for the interaction, row, and column effects, respectively, by forming a linear contrast for a 2×2 factorial design for fixed-effects heterogeneous analysis of variance. The proposed method uses the Welch t test and its corresponding degrees of freedom to calculate the final sample size in a 2-step procedure. The simulation results show that the proposed sample size allocation ratio can minimize the sampling cost, while at the same time the designated power is achieved. The article concludes with a discussion to reiterate the importance of sample size planning, especially for testing the iteration effect.  相似文献   

Simulation framework for teaching in modeling and simulation areas     

Marisa Raquel De Giusti  Ariel Jorge Lira  Gonzalo Luján Villarreal 《European Journal of Engineering Education》2008,33(5-6):587-596

Simulation is the process of executing a model that describes a system with enough detail; this model has its entities, an internal state, some input and output variables and a list of processes bound to these variables. Teaching a simulation language such as general purpose simulation system (GPSS) is always a challenge, because of the way it executes the models and the abstraction level it can achieve, very different compared with most well-known programming languages. This article presents an open source simulation framework that implements a subset of entities of GPSS, which could help students to improve the understanding of this language. This tool also stores all entities of simulations in every single simulation time, which is very useful for debugging simulations, but also for getting a detailed history of all entities in the simulations, knowing exactly how they have behaved in every simulation time.  相似文献