期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
A Heuristic Method for Two-sided Assembly Line Balancing Problem 被引量:5
1
作者 秦杏敏 金烨 《Journal of Shanghai Jiaotong university(Science)》 EI 2005年第1期61-65,共5页
A two-sided assembly line is typically found in plants producing large-sized products. Its advantages over a one-sided line and the difficulties faced in two-sided line balancing problems were discussed. A mathematica... A two-sided assembly line is typically found in plants producing large-sized products. Its advantages over a one-sided line and the difficulties faced in two-sided line balancing problems were discussed. A mathematical model for two-ALB problem was suggested. A modification of the “ranked positional weight” method, namely two-ALB RPW for two-ALB problems was developed. Experiments were carried out to verify the performance of the proposed method and the results show that it is effective in solving two-sided assembly line balancing problems. 展开更多
关键词 two-sided assembly lines assembly line balancing(ALB) task delay ranked positional weight(RPW)
下载PDF
Eukaryotic Promoter Recognition Using Back propagation Neural Network 被引量:1
2
作者 XIONGQing WANGYuan-Qiang LIZhi-Liang 《Chinese Journal of Biomedical Engineering(English Edition)》 2004年第2期87-92,共6页
A new system is developed to recognize promoter sequences from non promoter sequences based on position weight matrix and backpropagation neural network in this paper. The system performs significantly better on the t... A new system is developed to recognize promoter sequences from non promoter sequences based on position weight matrix and backpropagation neural network in this paper. The system performs significantly better on the training set and the test set, the mean recognition rate is as high as 99% on the training set and 97% on the testing set. Experimental results demonstrate the effectiveness of the system to recognize the promoter sequences that have been trained and the promoter sequences that have not been seen previously. 展开更多
关键词 Eukaryotic promoter recognition BP neural network position weight matrix
下载PDF
A combined statistical model for multiple motifs search
3
作者 高丽锋 刘鑫 官山 《Chinese Physics B》 SCIE EI CAS CSCD 2008年第12期4396-4400,共5页
Transcription factor binding sites (TFBS) play key roles in genebior 6.8 wavelet expression and regulation. They are short sequence segments with definite structure and can be recognized by the corresponding transcr... Transcription factor binding sites (TFBS) play key roles in genebior 6.8 wavelet expression and regulation. They are short sequence segments with definite structure and can be recognized by the corresponding transcription factors correctly. From the viewpoint of statistics, the candidates of TFBS should be quite different from the segments that are randomly combined together by nucleotide. This paper proposes a combined statistical model for finding over- represented short sequence segments in different kinds of data set. While the over-represented short sequence segment is described by position weight matrix, the nucleotide distribution at most sites of the segment should be far from the background nucleotide distribution. The central idea of this approach is to search for such kind of signals. This algorithm is tested on 3 data sets, including binding sites data set of cyclic AMP receptor protein in E.coli, PlantProm DB which is a non-redundant collection of proximal promoter sequences from different species, collection of the intergenic sequences of the whole genome of E.Coli. Even though the complexity of these three data sets is quite different, the results show that this model is rather general and sensible. 展开更多
关键词 transcription factor binding sites MOTIF position weight matrix
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部