Influence of the difficulty of the Matching Familiar Figures Test-20 on the assessment of reflection–impulsivity: An item analysis

This study is an item analysis of the Matching Familiar Figures Test-20. We examined error scores in the Matching Familiar Figures Test-20 to determine the influence of the difficulty of the test on the assessment of reflection–impulsivity. The sample included 700 participants aged between 6 and 12 years. The results obtained from the corrected item–total correlation showed moderate but significant values for the discrimination index in all age groups, although the lowest values were found in the 6-year-old group. The item difficulty data show that the test is quite difficult for 6-year-old participants and quite easy for 12-year-old participants, and more likely to show individual differences between these ages. The results suggest that the difficulty of the MFFT20 is appropriate for children between 6 and 12 years. However, because of some floor and ceiling effects, the results of this test for ages 6 and 12 should be interpreted very cautiously, especially for the 6-year-old group.     

无纸化考试系统中题库量分析研究

本文研究了计算机考试系统中题库数量与随机抽题量的关系,通过实验仿真得出,当题库的数量达到2500以上时,能满足当前计算机的随机抽取100个试题组成一份试卷的要求。     

基于"口语表达"的普通话"说话"测试标准、特点及训练途径分析

作为口语水平测试,语音标准程度是普通话“说话”测试的基本和重要的观测点,许多人因此认为“说话”测试只管语音标准,将“说话”在语流状态中包含的“语音呈现”和“口语表达”两个要素进行了驳离,重“语音呈现”,轻“口语表达”。而笔者从、“口语表达”角度出发,在普通话测试评分标准中分析“说话”的基本要求及心理语境特点,从实用角度探讨测试“说话”训练的规律性途径,以提高普通话测试“说话”的训练效率,为“说话”训练和测试提供借鉴。     

高中学业水平合格性考试命题难度控制技术的探究——以信息技术学科为例

高中信息技术学业水平合格性考试作为标准参照性考试,命题过程需要按照考试目标及要求做好难度控制,通过准确预估试题难度控制试卷难度,实现考试结果与考试目标的一致。命题难度控制技术包括试题的难度预估、试卷难度的控制。通过确定影响难度的主要客观因素、设计简便易行的试题难度计算方法、建立试题难度预估的参照模型等三个环节探究试题难度预估的方法,结合实例进一步探究试卷难度的控制技术。     

MEMS薄膜平均应力梯度在线测量方法

结构层淀积是MEMS加工过程中的重要工艺步骤,淀积薄膜的应力梯度是影响MEMS器件性能的一个重要的力学参数．文中介绍了几种常见的平均应力梯度在线测量方法,阐明了其测试结构及测量原理,并对这些测量方法进行了比较．     

Stakeholders’ test perceptions on test reform

The success of test reform relies considerably on how stakeholders understand and accept the revised test (Green & Andrade, 2010). This study provided an opportunity for students and teachers to share their perceptions of a recently revised English test in China, the Test for English Majors Grade Four (TEM4). In addition, this study examined how stakeholders’ perceptions of the test varied across institutions of different academic rankings. Survey data were collected from 496 students and 79 teachers, of whom 32 students and 12 teachers participated in a post-survey interview. Findings indicate that although stakeholders were overall positive about the revised TEM4, their perceptions were qualified by concerns with content representation and test difficulty. In addition, the data suggest that the revised TEM4 was associated with context-varying washback effects and negative psychological impacts. These findings highlight the important contribution that students' and teachers' perceptions may have in the test reform process.     

轿车副车架模态试验及有限元分析

本文使用了试验与有限元两种手段对轿车副车架进行了模态特性的分析研究。首先对副车架进行了模态试验并提取模态参数,然后建立副车架的有限元模型,通过仿真计算获得其自由状态下的模态参数,之后将试验结果与有限元结果进行对比分析。最后在确定有限元模型可靠的情况下,模拟计算了副车架在真实约束下的模态特性,为分析副车架在工作状态下的动态特性提供有用参考。     

“一年多考”机制下稳定英语高考难度的三种方法

英语高考试行"一年多考"是一项了不起的进步,但多次考试之间的难度波动往往会给直接使用原始分数做招生决定带来极大的麻烦。本文探讨了稳定测验难度的三种方法:国际考试行业的标准做法、借用标准设定思想的专家评定方法,以及反向使用效度证据的小规模代表性样本试测方法。期待这些方法可以给考试一线工作者提供更多的选择。     

《现代汉语》课双向多维教学法的研究及在普通话达标测试中的应用

作为现代汉语教师和普通话测试员在《现代汉语》课语音部分的理论知识的讲授中，根据普通话达标测试内容和现代汉语语音部分的教学目标，把二者有机融合，突出理论与实践的结合。形成教师与学生双向互动式的交流。采取双向互动多维教学法与普通话测试内容结合起来，有针对性地进行教学是解决这一问题的有效途径。     

微波辐射下猪去氧胆酸甲酯化反应

研究了微波辐射下猪去氧胆酸的甲酯化反应 ,通过正交实验设计 ,考察了甲醇用量、加热时间以及催化剂用量对猪去氧胆酸酯化反应产率的影响。考察了催化剂的类型对产率的影响。采用高效液相色谱进行转化率监测 ,使结果更加可靠。与常规加热法相比 ,采用微波辐射加热法 ,反应时间大大缩短且产率有所提高