In experiments, OEA is tested on 4 unconstrained and 6 constrained benchmark problems, and compared with three recent algorithms. 实验中,用4个无约束和6个有约束标准函数对算法进行了测试,与3个新算法作了比较,并对组织进化算法的性能作了深入分析。
In the present paper, starting from the Fresnel diffraction theory, we analyzed die dif-fraction image properties of the optical element arrays ( OEA) and obtained the point spread function. 从菲涅耳衍射理论出发,分析了光学元件阵列的衍射成像性质,求得了其点扩散函数。进一步分析了光学元件阵列的综合成像性质,得到了阵列能够成综合像的条件。
Development and applications of the OEA 1 TV autocollimator OEA-1电视自准直仪的研制及应用
The results show that with OEA, the soot, HC and CO emissions all decrease significantly while NOx emissions increase obviously. 结果表明,富氧进气后排气烟度、HC和CO排放显著降低而NOx排放增加明显。
The results show that for both LPG engine and diesel engine, OEA makes start speed rise. 研究表明,无论是LPG发动机还是柴油机,富氧进气的使用均能够提高发动机的起动速度。
China, as the largest apparel producers and exporters in the world, however, are mainly engaged in OEA or OEM, and Chinese apparel producers are mostly involved in low value added sectors. 中国作为世界上最大的服装生产国与出口国,国内服装企业却仍以来料加工为主要经营方式,处于价值链低端。
With the same fuel supply timing, the characteristics of combustion and emission were studied when the diesel engine was supplied with oxygen-enriched intake air ( OEA) and the intake air diluted with inert gas Ar 、 N2 and CO2. 在供油时刻不变的条件下,研究了柴油机富氧进气和常规进气添加惰性气体时的燃烧排放特性。
We discover the relationship between the initial threshold and the optimal threshold in biological evolution by detailed in the population evolution model. Based on the relationship, we improve the threshold updating model; establish a threshold modification model to obtain a fast and stable OEA. 在进一步细化种群进化模型的基础上,发现了种群进化中初始阈值和最优阈值的关系,改进了阈值更新模型,建立了阈值修正模型,得到了收敛迅速,收敛速度和计算结果稳定的OEA。
The fuel supply timing was fixed at 28 ℃ A. The research results show that compared to oxygenated blend fuel, OEA makes longer combustion duration and lower indicated thermal efficiency and soot emissions as well as higher NOx emissions. 结果表明,与使用含氧混合燃料时相比,在供油时刻不变情况下,富氧进气时燃烧持续期长,指示热效率低,排气烟度低而NOx排放高。