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利用灰色理论本身的特征对经济参数进行预测,并运用自适应模糊神经网络对其拟合误差进行预测,从而达到较好的预测效果.最后以安徽省历年固定资产投资实际数据为例,利用人工神经网络建立经济预测模型,模型预测结果较传统灰色理论直接预测更符合实际趋势,效果较好. 相似文献
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张玉成 《中国新技术新产品精选》2009,(22):143-143
当前,国务院发布了加强节能工作的决定,全国上下都加强了节能减排工作。天津港轮驳有限公司也不例外必须走节能减排,建设节约型企业的路子。本文就天津港轮驳有限公司怎样节能做了探讨。主要有三方面。一是在管理上加强领导,二是在技术上改革创新,三是在拖轮自身管理和操纵上进行节能工作。 相似文献
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介绍了以直方图及■—R控制图为主要功能的计算机辅助质量控制软件系统的结构特点及在机械加工中的应用实例。该系统代替手工方法后将会使直方图及■—R图更广泛有效地用于控制机械加工质量。 相似文献
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We investigate a minute magneto hydro-dynamic mixer with relatively rapid mixing enhancement experimentally and analytically. The mixer is fabricated with brass and polymethyl methacrylate (PMMA) layers. A secondary flow is generated by using the Lorentz force in the fluids. The efficiency of mixing is greatly improved due to the large increase of the contact area between two mixing fluids. The micro particle image velocimetry technique is employed to measure the fluid flow characteristics in the micro-channel. Numerical simulation is performed based on the theoretical model of the computational fluid dynamics and the electromagnetic field theory. The experimental results are in good agreement with the numerical results, which indicates that the mixing area is enlarged by the driving of Lorentz force and the mixing can be enhanced. 相似文献
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