大学普通物理实验教学改革

物理实验教学属于智慧智能范畴 ,是对大学生进行科学实验基本训练一门重要的基础课。针对一些大学生对物理实验缺乏学习的积极性以及他们实验时动手能力表现欠佳的现状 ,分析原因 ,探讨大学普通物理实验教学改革的途径和措施     

影响分析化学实验结果因素的探讨

本文探讨了影响分析化学实验结果的因素，指出溶液的酸度、试剂的浓度，用量、加入顺序和溶剂等都对分析实验的结果产生影响，并分析了其原因。     

力学实验教学改革的探索与实践

力学实验作为力学课程中重要的实践性教学环节,对于培养工科学生用科学的方法来研究处理实际问题的能力和创新精神,提高学生的综合素质有着极其重要的作用.文章分析了力学实验教学改革的实践,探讨了提高力学实验教学效果的改革思路;提出要通过开发综合性与研究性实验项目,探索合理的实验教学模式,加强培养学生解决工程实际问题的能力及力学建模能力.     

综合设计性实验对学生能力和素质的培养

本文就开展综合设计性实验对学生能力和素质的培养进行初步探讨。     

应用神经元控制器的实时控制装置和实验

针对平衡倒立摆这一非线性控制问题，设计了神经元控制器和控制装置，编制了实时控制程序．控制装置运行良好，成功地平衡了倒立摆．实时控制实验显示，当倒立摆的参数变化时，神经元控制器比一般的控制器具有强得多的自适应能力．     

CO_2增加与未来气温变化

近几十年来．由于人类活动导致大气中ＣＯ２含量呈明显上升趋势，预计到下世纪中叶ＣＯ２浓度将达到４５０ｐｐｍ左右，下世纪末，将达到工业革命前的两倍，各种数值模式表明，届时全球气温将升高１．５－４．５℃。     

最优验血方法的判定

本文对Ｎ个人验血的检验方法进行研究．得到如下结果：（１）设普查对象的阳性概率为ｐ，对当时，采用分组检验最优；当ｐ≥０．３０７８时，采用单个检验最优、（２）当采用分组检验时，分组人数或时，检验次数最少．     

Effects of fixed costs in two-person sequential bargaining

Rubinstein (1982) considered the problem of dividing a given surplus between two players sequentially, and then proposed a model in which the two players alternately make and respond to each other's offers through time. He further characterized the perfect equilibrium outcomes, which depend on the players time preferences and order of moves. Using both equal and unequal bargaining cost conditions and an unlimited number of rounds, two experiments were designed to compare the perfect equilibrium model to alternative models based on norms of fairness. We report analyses of final agreements, first offers, and number of bargaining rounds, which provide limited support to the perfect equilibrium model, and then conclude by recommending a shift in focus from model testing to specification of the conditions favoring one model over another.     

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。     

Does media coverage influence public attitudes towards welfare recipients? The impact of the 2011 English riots

Following the shooting of Mark Duggan by police on 4 August 2011, there were riots in many large cities in the UK. As the rioting was widely perceived to be perpetrated by the urban poor, links were quickly made with Britain's welfare policies. In this paper, we examine whether the riots, and the subsequent media coverage, influenced attitudes toward welfare recipients. Using the British Social Attitudes survey, we use multivariate difference‐in‐differences regression models to compare attitudes toward welfare recipients among those interviewed before (pre‐intervention: i.e. prior to 6 August) and after (post‐intervention: 10 August–10 September) the riots occurred (N = 3,311). We use variation in exposure to the media coverage to test theories of media persuasion in the context of attitudes toward welfare recipients. Before the riots, there were no significant differences between newspaper readers and non‐readers in their attitudes towards welfare recipients. However, after the riots, attitudes diverged. Newspaper readers became more likely than non‐readers to believe that those on welfare did not really deserve help, that the unemployed could find a job if they wanted to and that those on the dole were being dishonest in claiming benefits. Although the divergence was clearest between right‐leaning newspaper and non‐newspaper readers, we do not a find statistically significant difference between right‐ and left‐leaning newspapers. These results suggest that media coverage of the riots influenced attitudes towards welfare recipients; specifically, newspaper coverage of the riots increased the likelihood that readers of the print media expressed negative attitudes towards welfare recipients when compared with the rest of the population.