论前卫艺术对艺术教育发展现状的影响

中国的前卫艺术近年来呈现出概念化、随意化的发展趋势,这一现象在艺术教育方面并没有得到足够的重视。艺术的创新要以本身的准则不能被突破为前提,而不是一味地为创新而创新。艺术的基础学习和文化修养更为重要,要注重学生的人格发展,培养具有健全人格、具备综合素质的适应社会发展的创造型人才。     

一种改进的GA变异算子及其数学分析

提出了一种改进的GA变异算子,并对其有效性作了数学分析。实例表明,该算子能改善GA的收敛性能。     

专用集成电路入检测试系统

专用集成电路入检测试系统是根据《专用集成电路入检测试系统研制要求》的设备用途。被测对象的主要技术指标．测试系统的组成、功能殛主要技术指标制定。通过引入通用测试仪表组,运用GPIB总线控制等方法。开发研制了集成电路入检设备．该设备可对混合集成电路模块在常温条件下的技术指标进行测试。     

管壳式换热器传热强化技术进展

介绍了国内外传热强化技术研究的发展概况 ,简述了典型的强化传热元件开发、新型壳程结构设计及国内外推出的各种新型高效换热器的有关情况 ,指出了国内近期开发研究的发展方向。     

江苏省水利地理信息系统三维展示平台构建与实现

江苏省水利地理信息系统三维展示平台在Skyline技术的基础上,加载了全省DOM数据、DEM数据及重点水利设施、建筑及景观三维模型数据,并集成了基于VR技术的大型水利三维虚拟场景,实现了高效率、高精度、精细化三维地形数据的组织、发布和应用,为三维GIS技术在水利信息化建设中提供了广阔的应用前景。     

空载变压器投运电压不平衡问题的探讨

空载投入变压器,从低压侧加压,高压侧相电压出现不平衡;而从高压侧加压,低压侧出现相电压不平衡,两种状态下线电压均平衡。此现象是什么原因造成,能否投入运行?是否影响发电机并列?就空载变压器投运电压不平衡问题进行探讨,得出在变压器各种试验满足规程要求的前提下,测得空载变压器线电压平衡,用户可以放心使用,对电气设备和发电机并列不会有什么影响。     

Study of partial discharge characteristics at repetitive square voltages based on UHF method

Due to overvoltage produced by inverter output,inverter-fed motor insulation systems often experience fast electrical aging process,especially when partial discharge(PD) is incepted.Before putting into use,the PD detection should be performed on inverter-fed motors at repetitive square voltages to avoid the PD caused insulation deterioration when the motors are collected to inverters having specific characteristics.However,unlike PD tests at AC/DC voltages proposed in IEC 60270,the PD detection at repetitive square voltages is much more complex because of serious interference generated by impulse generator.To solve the problem,ultra-high frequency(UHF) method seems recommendable for its preferable signal-to-noise ratio(SNR).The chief aim of this study is to investigate PD pulse and statistical characteristics of turn-to-turn insulation for inverter-fed traction motors.A square-shaped Archimedes antenna,specially designed for the PD detection at repetitive square voltages of fast rise times,was used to perform PD tests on turn-to-turn insulation models.Time and frequency analysis results indicate that energy component of generator disturbance and PD pulses are mainly distributed in the 0-0.5 GHz and 0.6-1.5 GHz range,respectively.Based on the results,suitable filter was designed for power disturbance suppression.Additionally,resorting to the sensor unit(i.e.antenna and filter) and the PD test system,the PD statistical features at square voltages of different frequencies were obtained.Experimental results show that higher frequency will give rise,statistically,to PD of lower magnitudes distributing at smaller phases.A reasonable interpretation of this phenomenon was presented.Lastly,according to the PD statistical features,some suggestions for the PD detection system design,generator parameter optimization and the PD pulse extracting were given.The results of this work would be beneficial to the increase of the sensitivity when performing the PD detection on insulation systems for inverter-fed motors at repetitive square voltages and thus,improving the reliability of inverter-fed motors.     

引黄入淀献县至十二孔闸段水量损失

2010～2011年度引水与往年比较,献县至十二孔闸段引水流量损失较大。本文主要分析了引起本次引水流量损失较大的可能因素,并提出了相应的解决方法,以提高引水效率,减少引水成本。     

模拟抗原（Ac-NK16-Ahx-3）免疫反应抗体ELISA检测方法研究

为满足实验室单克隆抗体的制备研究,本实验特对实验室常用的制备单抗的模拟抗原（Ac-NK16-Ahx-3）进行ELISA间接法检测,进而建立一种高效的检测方法。通过对不同稀释度待测抗体的免疫吸附测定,检测出它的最终灵敏度为0.078mg/mL,最佳二抗稀释倍数为300倍,其最佳拟合曲线为y=-0.0732x＋0.6875,R2=0.8619。并且,通过统计学方法进行统计分析,确定出各实验组的相关性及变异系数,从而排除实验中的操作误差,最终可确定最佳的实验条件,并保证实验的准确性。     

关于《求解LP问题的部分基变量算法》的勘误及补正

文章针对周康等人的《求解LP问题的部分基变量算法》一文进行了分析,指出其文中算法原理及算法步骤存在的一些错误,补正了算法的不完善之处,并通过数值试验验证算法的计算性能。