In the case of unknown weights, theories of multi-attributed decision making based on interval numbers and grey related analysis were used to optimize mining methods. As the representative of independence for the indi...In the case of unknown weights, theories of multi-attributed decision making based on interval numbers and grey related analysis were used to optimize mining methods. As the representative of independence for the indicator, the smaller the correlation of indicators is, the greater the weight is. Hence, the weights of interval numbers of indicators were determined by using correlation coefficient. Relative closeness based on positive and negative ideal methods was calculated by introducing distance between interval numbers, which made decision making more rational and comprehensive. A new method of ranking interval numbers based on normal distribution was proposed for the optimization of mining methods, whose basic properties were discussed. Finally, the feasibility and effectiveness of this method were verified by theories and practice.展开更多
对现有盘形悬式绝缘子标准强度等级系列及其对应的联接结构尺寸进行了研究,通过计算拓展了更高强度等级及其联接尺寸,从钢脚、铁帽和绝缘件三者强度配合的正态分布曲线规律分析了提高产品强度的途径,在绝缘件标准差小的前提下分析了随...对现有盘形悬式绝缘子标准强度等级系列及其对应的联接结构尺寸进行了研究,通过计算拓展了更高强度等级及其联接尺寸,从钢脚、铁帽和绝缘件三者强度配合的正态分布曲线规律分析了提高产品强度的途径,在绝缘件标准差小的前提下分析了随着脚杆尺寸增大其公差也增大对钢脚强度分散性的影响,提出了700 k N以上强度等级对应36号联接标记的系列补充方案和其钢脚、铁帽的强度配合方案,建议了脚杆公差的设定值,也为今后国行标乃至IEC标准修订提供参考。展开更多
Images captured outdoor usually degenerate because of the bad weather conditions,among which fog,one of the widespread phenomena,affects the video quality greatly.The physical features of fog make the video blurred an...Images captured outdoor usually degenerate because of the bad weather conditions,among which fog,one of the widespread phenomena,affects the video quality greatly.The physical features of fog make the video blurred and the visible distance shortened,seriously impairing the reliability of the video system.In order to satisfy the requirement of image processing in real-time,the normal distribution curve fitting technology is used to fit the histogram of the sky part and the region growing method is used to segment the region of sky.As for the non-sky part,a method of self-adaptive interpolation to equalize the histogram is adopted to enhance the contrast of the images.Experiment results show that the method works well and will not cause block effect.展开更多
基金Project(50774095) supported by the National Natural Science Foundation of ChinaProject(200449) supported by the National Outstanding Doctoral Dissertations Special Funds of China
文摘In the case of unknown weights, theories of multi-attributed decision making based on interval numbers and grey related analysis were used to optimize mining methods. As the representative of independence for the indicator, the smaller the correlation of indicators is, the greater the weight is. Hence, the weights of interval numbers of indicators were determined by using correlation coefficient. Relative closeness based on positive and negative ideal methods was calculated by introducing distance between interval numbers, which made decision making more rational and comprehensive. A new method of ranking interval numbers based on normal distribution was proposed for the optimization of mining methods, whose basic properties were discussed. Finally, the feasibility and effectiveness of this method were verified by theories and practice.
文摘对现有盘形悬式绝缘子标准强度等级系列及其对应的联接结构尺寸进行了研究,通过计算拓展了更高强度等级及其联接尺寸,从钢脚、铁帽和绝缘件三者强度配合的正态分布曲线规律分析了提高产品强度的途径,在绝缘件标准差小的前提下分析了随着脚杆尺寸增大其公差也增大对钢脚强度分散性的影响,提出了700 k N以上强度等级对应36号联接标记的系列补充方案和其钢脚、铁帽的强度配合方案,建议了脚杆公差的设定值,也为今后国行标乃至IEC标准修订提供参考。
文摘Images captured outdoor usually degenerate because of the bad weather conditions,among which fog,one of the widespread phenomena,affects the video quality greatly.The physical features of fog make the video blurred and the visible distance shortened,seriously impairing the reliability of the video system.In order to satisfy the requirement of image processing in real-time,the normal distribution curve fitting technology is used to fit the histogram of the sky part and the region growing method is used to segment the region of sky.As for the non-sky part,a method of self-adaptive interpolation to equalize the histogram is adopted to enhance the contrast of the images.Experiment results show that the method works well and will not cause block effect.
