一类分形插值曲面的截线及其维数

对一类分形插值曲面和它的截线进行探讨．根据生成分形插值曲面的迭代函数系,导出了其截线的迭代函数系,证明了它的不变集（即分形插值曲面的截线）是具有间断点的分形插值函数的图像,并通过计算得到分形插值曲面的盒维数与其截线的盒维数之间的关系．     

伏安法及其应用

本文解释了伏安法和减小用伏安法过程中产生误差的方法,并解释了伏安法在实验中的应用。     

最大气泡法测定乙醇溶液表面张力

通过实验,比较最大气泡法测定乙醇溶液实验中体积分数法和称重质量分数法配制标准溶液的优劣,分析套管外循环水恒温实验和支管烧瓶直接恒温实验的差别,并找寻本实验浓度适用范围．结果表明：称量法配制标准液比体积分数法好;测定管直接恒温比外循环恒温效果好,低浓度范围精确性更高．     

Law of surface movement for multi-coal seam strip mining

It is an important part of green mining to control the disasters of coal mining which have caused irreversible damages to buildings and ecological environment. Strip mining is one of the efficient measures to control surface subsidence and mining damage. However, the research on the laws of the surface subsidence are still deficient in multi-coal seam strip mining at present. Based on the Fast Lagrangian Analysis of Continua （short for FLAC3D） numerical simulation software, the laws of the surface subsidence and horizontal movement were systematically studied for different depths, different mining widths, different distances between seams, different mining thickness, different parameters between seams and the special relations of the upper pillar and the lower pillar in the vertical direction in multi-seam strip mining. The function relation between the maximum subsidence and the maximum horizontal movement with the depth, the mining width, the seam distance, mining thickness, different parameters between seams and the partial offset are summarized respectively. Finally the formula integrating the surface maximum subsidence value and the maximum horizontal movement was deduced. The results can be used for reference theory and measure in forecasting the surface displacement in multi-coal seam strip mining.     

基于曲面拟合的QR码图像预处理方法

基于曲面拟合技术的图像二值化方法采用二雏二阶多项式拟合曲面对QR码背景图像进行曲面拟合和图像分割。实验证明,该方法能较好地解决光照不均条件下获取QR码图像的二值化问题。     

表层扮演对社会心理安全氛围和情绪耗竭关系的中介效应

采用社会心理安全氛围量表、表层扮演量表和情绪耗竭量表,以研究对象匿名作答的形式,通过网络对江苏省民警进行问卷调查,使用HLM多层线性模型分析数据,以探索民警的表层扮演策略对于社会心理安全氛围和情绪耗竭的中介效应。结果显示,组织层面的社会心理安全氛围对于个体的情绪耗竭主效应显著,并能预测个体的表层扮演策略;表层扮演策略对于情绪耗竭主效应显著,在社会心理安全氛围和情绪耗竭关系中发挥部分中介的效应。     

Teachers’ emotional labour,discrete emotions,and classroom management self-efficacy

Extending research on teachers’ emotions beyond general educational contexts and Western samples, we examined how teachers’ emotions correlated with their emotional labour strategies and classroom management self-efficacy with an East-Asian sample in an English teaching context (127 Korean English teachers). Surface acting (emotional expressions modification) correlated positively with anxiety and frustration, whereas deep acting (internal feelings modification) correlated positively with enjoyment and pride and negatively with anxiety. Enjoyment and anger correlated positively and frustration negatively with classroom management self-efficacy. Enjoyment and frustration were documented as mediators in the relationship between emotional labour strategies and classroom management self-efficacy. The results suggest that deep acting is linked to experiencing positive emotions, which in turn is positively related to classroom management self-efficacy, whereas surface acting is linked to experiencing negative emotions, which in turn relates negatively to classroom management self-efficacy. Theoretical and educational implications will be further discussed.     

两种基于过程能力指数的抽样方案研究

采用合理的抽样频率、抽样容量可以使得过程收益最大、使得部分或总的过程（工序）控制成本最小．研究了基于过程（工序）能力指数的两种抽样方案,并且给出相关例子评价这两种抽样方案,以便在生产过程中很好地被采用．     

疲劳负荷下颈部肌肉表面肌电活动的变化规律

目的:运用表面肌电技术了解疲劳状态下颈部肌肉的活动变化规律,为颈部肌肉疲劳提供理论依据。方法:16名无颈部疾病的健康青年男性志愿者,分别在屈、伸、左侧屈和右侧屈4个运动方向上完成60%最大随意收缩力(Maximal Voluntary Contraction,MVC)的等长收缩,直至力竭。评价指标包括平均肌电值(Averaged Electromyographic Signal,AEMG)、平均功率频率(MPF)、复杂度(Lempel-Ziv,C(n))以及确定性线段百分比(Determinism%,%DET)。结果:1)在60%MVC负荷下,AEMG随着负荷时间的延续逐渐增加,MPF及C(n)随负荷时间的延长逐渐减小,而呈逐渐增加的趋势。2)在疲劳实验中进行屈颈运动时,胸锁乳突肌的MPF下降斜率与其他方向及其他肌肉有显著性差异(P<0.05),C(n)和%DET上体现出较为明显的规律性。结论:各肌肉在对应运动方向上担任主动肌时容易产生疲劳,胸锁乳突肌尤为明显。而在疲劳性屈颈运动时主动肌胸锁乳突肌和拮抗肌头夹肌均较易产生疲劳,sEMG信号的周期化程度随疲劳积累而增加。     

基于有限元法对结合面实验箱模态分析研究

为了、明确机械结合面实验箱的固有频率与振型,从理论上建立了振动动力学和模态模型．并基于有限元方法对结合面实验箱体进行了模态分析,获得了各阶模态下的固有频率和固有振型,为结合面实验装置设计和数据分析提供了一定的理论依据。