In gene prediction, the Fisher discriminant analysis (FDA) is used to separate protein coding region (exon) from non-coding regions (intron). Usually, the positive data set and the negative data set are of the same si...In gene prediction, the Fisher discriminant analysis (FDA) is used to separate protein coding region (exon) from non-coding regions (intron). Usually, the positive data set and the negative data set are of the same size if the number of the data is big enough. But for some situations the data are not sufficient or not equal, the threshold used in FDA may have important influence on prediction results. This paper presents a study on the selection of the threshold. The eigen value of each exon/intron sequence is computed using the Z-curve method with 69 variables. The experiments results suggest that the size and the standard deviation of the data sets and the threshold are the three key elements to be taken into consideration to improve the prediction results.展开更多
We present old and new results about the size function of a set providing simple and complete proofs using basic tools of general topology. For instance, the decomposition of the size function is given and, under the ...We present old and new results about the size function of a set providing simple and complete proofs using basic tools of general topology. For instance, the decomposition of the size function is given and, under the calmness property of a set, the right continuity of the size function with respect to both arguments is established. Finally, a classification of its points of discontinuity is given.展开更多
本工艺与设备针对膝部气囊平台化设计以及客户降低模块黑盒子许用空间而设计。当气袋完成折叠后,在高温下热定型可以改善气袋织物纤维的取向度[1],在高压条件压缩并排出折叠过程布料间空气并稳定气袋折痕处形态,从而降低折叠后模块的体...本工艺与设备针对膝部气囊平台化设计以及客户降低模块黑盒子许用空间而设计。当气袋完成折叠后,在高温下热定型可以改善气袋织物纤维的取向度[1],在高压条件压缩并排出折叠过程布料间空气并稳定气袋折痕处形态,从而降低折叠后模块的体积,使其拥有稳定的形态便于后续的装配操作。热定型后的模块体积稳定可靠,使不同产品共用一种壳体罩盖成为可能,并降低其对壳体的刚度依赖,进而实现织物壳体的应用,减少了壳体使用成本。设备由自动送料系统、物料装配系统、转运系统、加热与冷却系统、自动出料系统几个部分构成,使用PLC语言对过程进行自动控制,使用无线射频识别即射频识别技术(Radio Frequency Identification,RFID)进行追溯识别。保证设备在实现兼容不同产品的情况下同步实现可追溯性。展开更多
文摘In gene prediction, the Fisher discriminant analysis (FDA) is used to separate protein coding region (exon) from non-coding regions (intron). Usually, the positive data set and the negative data set are of the same size if the number of the data is big enough. But for some situations the data are not sufficient or not equal, the threshold used in FDA may have important influence on prediction results. This paper presents a study on the selection of the threshold. The eigen value of each exon/intron sequence is computed using the Z-curve method with 69 variables. The experiments results suggest that the size and the standard deviation of the data sets and the threshold are the three key elements to be taken into consideration to improve the prediction results.
文摘We present old and new results about the size function of a set providing simple and complete proofs using basic tools of general topology. For instance, the decomposition of the size function is given and, under the calmness property of a set, the right continuity of the size function with respect to both arguments is established. Finally, a classification of its points of discontinuity is given.
文摘本工艺与设备针对膝部气囊平台化设计以及客户降低模块黑盒子许用空间而设计。当气袋完成折叠后,在高温下热定型可以改善气袋织物纤维的取向度[1],在高压条件压缩并排出折叠过程布料间空气并稳定气袋折痕处形态,从而降低折叠后模块的体积,使其拥有稳定的形态便于后续的装配操作。热定型后的模块体积稳定可靠,使不同产品共用一种壳体罩盖成为可能,并降低其对壳体的刚度依赖,进而实现织物壳体的应用,减少了壳体使用成本。设备由自动送料系统、物料装配系统、转运系统、加热与冷却系统、自动出料系统几个部分构成,使用PLC语言对过程进行自动控制,使用无线射频识别即射频识别技术(Radio Frequency Identification,RFID)进行追溯识别。保证设备在实现兼容不同产品的情况下同步实现可追溯性。
