学术类科技期刊影响力归一化法评判定量模型的构建

将我国294种高校自然科学学报3年的影响因子、基金论文比、总被引频次、即年指标、他引率、平均引文率、地区分布数、机构分布数确定为8项模型因素集.运用德尔菲法确定8项指标的权重,再根据归一化法理论设计出评判定量模型计算软件.结果表明:评判定量模型计算软件依据指标、权重即调即得排序结果,有利于期刊分级评优和遴选核心期刊.     

《冯玉祥、赵望云泰山石刻诗画集》序

每逢看见国画的山水，不由得我就要问：为什么那小桥上、流水旁、秋柳下与茅屋中，总是那一二宽衣博带、悠悠自得的老头儿呢？难道山间水畔，除了那爱看云石的老翁，就没有别的居民？除了寻诗踏雪的风趣，就没有别种生活吗？     

对高等体育院校篮球专业学生谋略教育的探讨

高等体育院校是培养教练员和专业教师的主要渠道,教材知识结构对培养对象及人才的可持续发展有着不可估量的作用.篮球运动是一项智慧性竞技项目,运动员或教练员要在这场智力游戏中,有谋有略,充分发挥运动员技战术水平,才能克敌制胜,取得比赛的最后胜利.因此,谋略知识应是构建篮球理论的重要内容之一.     

大学商科小组讨论互动有效性的中英视角对比研究

小组讨论是一种在中英大学商科课堂上常用的教学方法。英国文献中有比较成熟的关于“好的”小组讨论互动行为的描述,这些描述得到了教育学、语言学、商科教学等多方证实为在安格鲁-撒克逊文化下有利于小组合作学习的“有效”互动行为。文献中针对我国教师和学生所认为“好的”讨论互动行为的报道非常少。通过使用文献中能代表主要四种小组讨论互动方式的真实语料来探究并对比英国商科教师、中国商科教师和中国商科学生对小组讨论互动方式的认可程度及其原因,为下一步收集更详尽的我国文化下“好的”讨论互动行为以及论证其是否促进我国学生小组合作学习奠定基础。     

科技期刊责任编辑处理稿件欠妥行为探析

科技期刊责任编辑与作者有一种相互依存、相互促进的关系,然而,在编辑出版活动中,责任编辑在处理作者稿件时常常出现多种欠妥行为。这既有责任编辑的主观原因,也有目前编辑出版活动中相关规章制度、外界环境等方面的客观原因。需要采取多种措施来消除和避免欠妥行为,以促进我国科技期刊事业的进一步繁荣和我国科技学术事业的健康发展。     

Concepts of a higher hierarchical level require more dual situated learning events for conceptual change: A study of air pressure and buoyancy

This article examines the process of students' conceptual changes in respect of air pressure and buoyancy as a result of instructing with the Dual Situated Learning Model. The dual situated learning events of this model were designed according to the students' ontological viewpoint on the science concepts as well as on the nature of these concepts. Results demonstrated that the notion of buoyancy required more dual situated learning events for conceptual change to occur than that for air pressure. Instead of attributing the difficulty involved in conceptual change to the mismatch of ontological category of the concepts, the author proposes that the hierarchical level of the scientific concepts would determine how easy or difficult it is to bring out a conceptual change. Concepts of higher hierarchical level subsume more essential underlying concepts, thus making it more difficult for conceptual changes to occur.     

改进MFCC参数在非特定人语音识别中的研究

随着信息时代的高速发展,人们越来越关注计算机的便携使用方式,以语音输入代替手动输入成为计算机未来发展的一个必然趋势.本文在MFCC特征参数的基础上,提出了一种改进MFCC特征参数--BMFCC特征参数,以提高原MFCC特征参数在语音识别时的识别率和运算速度.BMFCC特征参数在进行参数的提取时,分为特征分量加权、特征分量求差分、主成分分析三个步骤.仿真实验结果表明,本文提出的BMFCC特征参数在识别率和有运算速度上均优于MFCC特征参数,且更具鲁棒性.     

Bridging scientific reasoning and conceptual change through adaptive web‐based learning

This study reports an adaptive digital learning project, Scientific Concept Construction and Reconstruction (SCCR), and examines its effects on 108 8th grade students' scientific reasoning and conceptual change through mixed methods. A one‐group pre‐, post‐, and retention quasi‐experimental design was used in the study. All students received tests for Atomic Achievement, Scientific Reasoning, and Atomic Dependent Reasoning before, 1 week after, and 8 weeks after learning. A total of 18 students, six from each class, were each interviewed for 1 hour before, immediately after, and 2 months after learning. A flow map was used to provide a sequential representation of the flow of students' scientific narrative elicited from the interviews, and to further analyze the level of scientific reasoning and conceptual change. Results show students' concepts of atoms, scientific reasoning, and conceptual change made progress, which is consistent with the interviewing results regarding the level of scientific reasoning and quantity of conceptual change. This study demonstrated that students' conceptual change and scientific reasoning could be improved through the SCCR learning project. Moreover, regression results indicated students' scientific reasoning contributed more to their conceptual change than to the concepts students held immediately after learning. It implies that scientific reasoning was pivotal for conceptual change and prompted students to make associations among new mental sets and existing hierarchical structure‐based memory. © 2009 Wiley Periodicals, Inc. J Res Sci Teach 47: 91–119, 2010     

北川羌族自治县退耕还林(草)效益评估

本文以生态经济学和生态恢复学的基本原理为依据,总结了自1999年北川羌族自治县实施退耕还林(草)工程以来,生态林复合经营模式综合实施所带来的良好生态、经济和社会效益,论证了其可行性。