I Can't Make Heads Or Tails Out Of What You Are Saying,So Let's Just Agree To Be Fair

Assuming a coin is fair is common place in introductory statistical education. This article offers three approaches to test if a coin is fair. The approaches lend themselves to straightforward simulation studies that can enrich student understanding of joint probability and sample size requirements. Simulation studies comparing the relative merits of the three, or potential other, approaches are an example of problem‐based learning.     

Test anxiety in mathematics among early undergraduate students in a British university in Malaysia

The level of test anxiety in mathematics subjects among early undergraduate students at the University of Nottingham Malaysia Campus is studied in this article. The sample consists of 206 students taking several mathematics modules who completed the questionnaires on test anxiety just before they entered the venue for midterm examinations. The sample data include the differences in the context of academic levels, gender groups and nationality backgrounds. The level of test anxiety in mathematics is measured using seven Likert questionnaire statements adapted from the Test Anxiety Inventory describing one's emotional feeling before the start of an examination. In general, the result shows that the students who had a lower score expectation were more anxious than those who had a higher score expectation, but that they obtained a better score than the expected score. In the context of academic levels, gender groups and nationality backgrounds, there were no significant correlations between the level of test anxiety and the students’ academic performance. The effect size of the correlation values ranged from extremely small to moderate.     

合作学习模式培养阅读兴趣促进非英语专业大学生应对新四级

在英语教师贯彻执行《大学英语课程要求》的前提下,结合2005年推行的大学英语四级改革办法。阐述如何改变教学方法,转变教学观念,改变教学思路,并通过实践和研究,探索应对快速阅读及仔细阅读的技能和技巧,摸索出促进我校学生快速适应新四级考试的教学方法。     

研发产业与上海经济增长的协整与因果互动机制研究

以上海市经济增长为被解释变量,分别以被国外重要检索工具检索的论文数量、专利授权数量、技术市场成交金额及三者的合成指标为解释变量,基于协整和Granger因果检验模型,对上海市的研发产业与经济增长之间的协整与因果互动机制进行了实证研究。结果发现:虽然研发产业对上海经济增长有一定的贡献作用,但是受发展的机制、体制影响,研发产业与上海经济发展的良性互动机制还未建立,两者基本不构成Granger因果关系。     

新疆碳排放、能源消费与经济增长关系的实证研究

利用新疆1978—2013年的样本数据,在环境库兹涅茨曲线基础上,运用VAR模型的广义脉冲响应及Granger检验方法对新疆碳排放、能源消费与经济增长之间的动态关系进行计量研究。研究表明,经济增长是碳排放和能源消费增长的Granger原因,碳排量与能源消耗不是经济增长变化的Granger原因;它们之间呈现不同于经典的EKC理论的"N"型环境兹涅茨曲线。从新疆的实际区情出发,提出从能源消费结构、降低碳排放等方面采取相应的措施,实现新疆经济绿色增长。     

两种中部切削结构的PDC钻头破岩效率研究

为提高深井钻井速度、延长钻头寿命及提高钻头破岩效率,以释放井底应力降低岩石抗钻能力为理论基础,设计并加工了中心外凸、中心内凹两种中部切削结构的PDC钻头,并与普通PDC钻头开展破岩效果对比实验.实验结果表明,与普通钻头相比,中心内凹钻头破岩钻进速度最大增幅达到了336％,中心外凸钻头破岩钻进速度最大增幅达到了89％.实...     

大学体育武术考试影响因素研究

通过文献资料法、调查法、数据统计法,对普通大学生身体素质、气质类型和目标定向与武术考试成绩的关系进行了探讨。结果显示：在武术学习过程中,身体素质是基础,多血质学生动作掌握快但耐心不足,抑郁质学生学习持久有优越性;任务定向比自我定向更有利于学习;应注重基本功训练以产生较大的迁移;构建的“蝴蝶”模型对改革武术考试评价方法进行了探讨。     

女子拳击运动员安静状态下心电图观察

为了解和探究系统训练会使女子拳击运动员心脏功能方面产生怎样的适应性变化,是否呈现性别特征,对女子拳击运动员进行安静状态下的心电图检测,结果显示女运动员组相对于普通对照组呈现出明显的早期复极综合症和窦性心动过缓的发生率,且无性别差异,原因在于拳击专项的运动特点使运动员在经过系统训练后更多地动用了稳态调节机制。     

基于节点编码的最小生成树算法

以图论和遗传算法为基础,提出了求最小生成树问题的基于节点编码的遗传算法.该算法采用Prufer数对最小生成树进行编码.初始群体由系统随机产生,在遗传操作中采用单点交叉操作及基本位变异操作.实例表明,该算法可得到多个最优解.