具有温度补偿的高精度矿用氧气传感器设计

分析了电化学氧气探头的温度影响特性及补偿方法,介绍了具有温度补偿的高精度矿用氧气传感器的软硬件设计及实验测试过程。该传感器采用温度传感器DS18B20进行温度补偿,在10℃和40℃时的测量误差仅为0.1%,表明温度补偿效果较好。     

不同体育运动对大学生锻炼诱导情绪的影响研究

运用量表测试法、访谈法分别对参与网球、排球、篮球、乒乓球、足球、健美操、武术7项体育运动者进行了锻炼诱导情绪问卷的调查研究,旨在检验不同体育运动项目对于参与者造成的即时心理效益．研究结果表明：篮球、网球、武术、健美操使参与者通过运动产生了心理的快感和认同,为体育锻炼的坚持性奠定了良好的基础,良性心理效益更好;足球、乒乓球、排球项目因受其它因素的影响而对参与者的心理冲击较小,不能产生运动后心理的愉悦及释放不良情绪,心理效益不佳．     

NdFeB磁性材料化学镀Ni-W-P合金及其电化学行为研究

采用化学镀方法在NdFeB磁性材料表面施镀Ni-W-P合金镀层,利用扫描电子显微镜（SEM）、X射线衍射仪对Ni-W-P合金镀层的组织形貌、结构进行了分析,并用电化学方法对合金镀层的耐腐蚀性能进行了测试.结果表明,Ni-W-P合金镀层是由大量不同尺寸的颗粒状或胞状突起组成,随着P含量的逐渐增多,镀层结构由晶态结构逐渐转变为非晶态结构,非晶态Ni-W-P合金镀层的抗腐蚀性能明显好于晶态镀层.     

L-苏氨酸衍生物的合成及性质

以L-苏氨酸和香兰素为起始原料,设计并合成了9种新型光催化材料C₂₄H₂₈K₂N₂O₁₀Sn、C₂₄H₂₈FeK₂N₂O₁₀、C₂₄H₃₆FeK₂N₄O₁₀、C₂₄H₂₈Cl₂K₂N₂NiO₁₀、C₂₄H₂₈K₂N₄NiO₁₆、C₂₄H₂₈K₂N₂O₁₀Zn、C28H34K2N2NiO14、C₂₄H₂₈CoK₂N₂O₁₀和C₂₄H₂₈BaK₂N₂O₁₀,通过IR、MS(EI)、荧光分析和元素分析等对形成的希夫碱及其金属衍生物进行表征,推断其可能的化学结构,用紫外漫吸收研究光催化性质, 预测是一类潜在的环保性光催化材料。     

溴肉桂醛衍生物的合成及其性质

以L-酪氨酸(L-Tyrosine)与溴肉桂醛为原料,首先合成了具有手性的新型席夫碱配体L、然后分别与乙酸铅和五水硫酸铜进行配位反应,生成了C₁₈H₁₅BrCuKNO₇S和C₂₂H₂₁BrKNO₇Pb两种新的氨基酸衍生物金属络合物。利用红外光谱、紫外光谱、质谱和荧光等进行表征和性质研究。结果表明,配体L在紫外区和可见区均可以作为光催化剂材料,配合物 C₂₂H₂₁BrKNO₇Pb只适合作为紫外光区的光催化剂材料。而C₁₈H₁₅BrCuKNO₇S络合产物不适合作为光催化剂材料。     

一种基于Tsai法的摄像机改进标定法

为了提高摄像机标定精度和降低标定的复杂度,在Tsai两步标定法的基础上,提出了一种改进标定法.该方法采用分步标定的思想,以创建的平面模板为标定物,利用共面点便可线性求解出摄像机的内外参数.建立的摄像机模型考虑了径向畸变,有利于提高标定精度,标定过程只需要线性计算,避免了繁琐的非线性优化.     

Comparative investigation on electrochemical behavior of hydroquinone at carbon ionic liquid electrode, ionic liquid modified carbon paste electrode and carbon paste electrode

Ionic liquid, 1-heptyl-3-methylimidazolium hexafluorophosphate (HMIMPF₆), has been used to fabricate two new electrodes, carbon ionic liquid electrode (CILE) and ionic liquid modified carbon paste electrode (IL/CPE), using graphite powder mixed with HMIMPF₆ or the mixture of HMIMPF₆/paraffin liquid as the binder, respectively. The electrochemical behaviors of hydroquinone at the CILE, the IL/CPE and the CPE were investigated in phosphate buffer solution. At all these electrodes, hydroquinone showed a pair of redox peaks. The order of the current response and the standard rate constant of hydroquinone at these electrodes were as follows: CILE > IL/CPE > CPE, while the peak-to-peak potential separation was in an opposite sequence: CILE < IL/CPE < CPE. The results show the superiority of CILE to IL/CPE and CPE, and IL/CPE to CPE in terms of promoting electron transfer, improving reversibility and enhancing sensitivity. The CILE was chosen as working electrode to determine hydroquinone by differential pulse voltammetry, which can be used for sensitive, simple and rapid determination of hydroquinone in medicated skin cosmetic cream.     

供电所二维对标数据模型探析

应用标杆管理原理，结合现行对标管理，指出现行对标管理工作中存在的不足，提出并构建了供电所二维对标数据模型。对整个同业对标数据库模型的构建具有一定的借鉴价值。     

A line up evolutionary algorithm for solving nonlinear constrained optimization problems

In this work a complete framework is presented for solving nonlinear constrained optimization problems, based on the line-up differential evolution (LUDE) algorithm which is proposed for solving unconstrained problems. Linear and/or nonlinear constraints are handled by embodying them in an augmented Lagrangian function, where the penalty parameters and multipliers are adapted as the execution of the algorithm proceeds. The LUDE algorithm maintains a population of solutions, which is continuously improved as it thrives from generation to generation. In each generation the solutions are lined up according to the corresponding objective function values. The position's in the line are very important, since they determine to what extent the crossover and the mutation operators are applied to each particular solution. The efficiency of the proposed methodology is illustrated by solving numerous unconstrained and constrained optimization problems and comparing it with other optimization techniques that can be found in the literature.     

基于数字校园建设的校园网安全解决方案

数字校园建设已进入快速发展阶段,校园网络系统是数字校园建设的基础平台,高校在建设数字校园时必须十分重视校园网的安全,只有确保校园网是安全的,数字校园才能可靠承载各种应用系统、实现校园的数字化。结合作者所在单位的数字校园建设实际情况,给出一个校园网安全解决方案。