大学化学实验课程中有效数字的记录

有效数字是大学化学实验课程的主要教学内容之一,是培养学生在课程中理解并在日常学习与工作中规范使用有效数字,提升其对有效数字与测定误差之间关系的认识水平,树立良好规范的数字记录习惯,具有十分重要的现实意义。论述介绍了目前大学化学实验教学中关于有效数字方面存在的主要问题,并采用相应的举措建立和完善了教学方案以利于更好地解决存在的问题。通过几个学期的教学实践发现新教学方案取得了初步的成效,同时严格按照有效数字的要求记录与计算数据也是培养学生具有严谨科学素养的一条重要途径。     

A modified LGB method for detecting significant effects based on a half-normal probability plot

In analyzing data from unreplicated factorial designs, the half-normal probability plot is commonly used to screen for the ‘vital few’ effects. Recently, many formal methods have been proposed to overcome the subjectivity of this plot. Lawson (1998) (hereafter denoted as LGB) suggested a hybrid method based on the half-normal probability plot, which is a blend of Lenth (1989) and Loh (1992) method. The method consists of fitting a simple least squares line to the inliers, which are determined by the Lenth method. The effects exceeding the prediction limits based on the fitted line are candidates for the vital few effects. To improve the accuracy of partitioning the effects into inliers and outliers, we propose a modified LGB method (hereafter denoted as the Mod_LGB method), in which more outliers can be classified by using both the Carling’s modification of the box plot (Carling, 2000) and Lenth method. If no outlier exists or there is a wide range in the inliers as determined by the Lenth method, more outliers can be found by the Carling method. A simulation study is conducted in unreplicated $2^4$ designs with the number of active effects ranging from 1 to 6 to compare the efficiency of the Lenth method, original LGB methods, and the proposed modified version of the LGB method.     

A Study of a Network Meeting: Exploring the Interplay between Inner and Outer Dialogues in Significant and Meaningful Moments

The present study is part of a series of qualitative studies focusing on dialogic practice in southern Norway. In this article, we present a qualitative study of a network meeting focusing on the interplay between the participants' inner and outer dialogues. The network meeting is between an adolescent boy, his mother and two network therapists, the same adolescent case discussed previously in this journal by Bøe et al. ( 2013 ). The aim of this study is to explore how the interplay between inner and outer dialogues contributes to significant and meaningful moments for the interlocutors. A multiperspective methodology is used that combines video recordings of a network meeting and participant interviews with text analysis. Our research found the interplay has an important role in understanding the emergence of significant and meaningful moments in therapy. A one‐sided focus on participants' utterances or inner dialogues was insufficient to explain their significance and meaning to the interlocutors. A dialogical approach provides a theoretical frame and concepts that are useful in investigations of therapeutic conversations.     

重大突发公共卫生事件中政府新闻发布会效果研究——以墨西哥政府新冠肺炎疫情新闻发布会为例

在应对重大突发公共卫生事件过程中,政府应当做好信息公开。新闻发布会是政府向媒体和民众公开信息的重要渠道,是政府应对重大突发公共卫生事件的重要工具,运用得当能够满足民众的知情权,指导民众与政府在重大突发公共卫生事件应对中形成合力,甚至能变危为机。通过对墨西哥联邦政府在第一波新冠肺炎疫情期间召开的每日疫情情况报告新闻发布会进行研究和评估,可以看出重大突发公共卫生事件发生后,政府新闻发布会应当做到及时主动、真实详尽,并适当体现人文关怀。     

构建基于突发公共卫生事件的社会心理支持体系

文章重点阐述了突发公共卫生事件的概念及特点．分析了突发公共卫生事件期间社会公众疑病、恐慌、焦虑、抑郁、强迫、盲从等社会心理特点,最后提出构建突发公共卫生事件的社会心理支持体系,包括建立良好的风险沟通机制、发挥主流媒体功能、建立应急处理机制、改善认知模式、增进人际交往。     

语篇衔接与英语习得程度调查分析

通过对大学非英语专业学生的英语议论文写作中使用的语篇连接词进行统计分析,探讨学习者语篇衔接意识和能力与英语习得程度的关系。研究结果发现:1)学习者使用连接词的意识和能力与他们的英语习得程度有关系;2)英语习得程度好的学习者与程度差的学习者所使用的连接词在总数和类别数量上有显著差异;3)在议论文体中所使用的连接词存在单一的特点。     

三大优良作风是我党不断前进的重要法宝

理论联系实际、密切联系群众、批评与自我批评三大作风是我党在长期的革命实践中的显著标志和政治优势,也是我们党领导人民群众从胜利走向胜利的显著标志和政治优势.在新形势下,三大优良作风并没有过时,仍然是我党不断前进的重要法宝.     

论科技英语中wh-words引导名词性从句的用法

科技英语因其自身特点而成为一个独特的语域.wh-words可以用来引导各种从句.文章研究在科技英语中wh-words的句法功能,重点研究wh-words引导名词性从句的用法.运用统计学方法对wh-words在科技英语(T4)等语料库中的分布频率进行分析,根据卡方测试的结果做出判断.wh-words在不同的从句中使用的频率高低不等,有些wh-words在不同的语料库中的分布存在着显著不同,如what等词.因此,在某种程度上可以说,wh-words这一组词的用法特点是科技英语区别于普通英语的一个反映.     

我国重大刑事冤案成因分析及应对策略——以公安司法机关的绩效考核机制为视角

近些年来,我国刑事司法领域发生了许多重大刑事冤案,危害极大,比较典型的如赵作海杀人冤案、佘祥林杀妻冤案等.刑事冤案的发生原因错综复杂,现行公安司法机关的绩效考核机制便是其中之一.文章以应对重大刑事冤案的发生为出发点,我国公安司法机关的绩效考核机制存在着一些不足,需要加以优化.只有建立了良好的法治观念与法治环境,构建完善的法律制度,才能从根本上遏制赵作海杀人冤案这样的人间悲剧再次发生.     

近代汉语数词表示法

本文从近代汉语经典文献中收集、整理、归纳出零数、整数、序数、虚数、约数、分数、倍数、问数等数词表示法，并比照古代汉语和现代汉语数词表示方法，从中发现近代汉语在汉语史上“桥梁”意义。