起动控制规律对于辅助动力装置(Auxiliary Power Unit,APU)至关重要。针对APU起动控制规律设计中的控制时序、供油规律、起动过程中的限制及保护等关键技术点进行深入研究,提出一种适应性较好的起动控制规律。经多型APU整机试验验证,提...起动控制规律对于辅助动力装置(Auxiliary Power Unit,APU)至关重要。针对APU起动控制规律设计中的控制时序、供油规律、起动过程中的限制及保护等关键技术点进行深入研究,提出一种适应性较好的起动控制规律。经多型APU整机试验验证,提出的起动控制规律可缩短整机调试时间,提高研制效率。展开更多
Most of the developed immune based classifiers generate antibodies randomly, which has negative effect on the classification performance. In order to guide the antibody generation effectively, a decision hyper plane h...Most of the developed immune based classifiers generate antibodies randomly, which has negative effect on the classification performance. In order to guide the antibody generation effectively, a decision hyper plane heuristic based artificial immune network classification algorithm （DHPA1NC） is proposed. DHPAINC taboos the inner regions of the class domain, thus, the antibody generation is limited near the class domain boundary. Then, the antibodies are evaluated by their recognition abilities, and the antibodies of low recognition abilities are removed to avoid over-fitting. Finally, the high quality antibodies tend to be stable in the immune network. The algorithm was applied to two simulated datasets classification, and the results show that the decision hyper planes determined by the antibodies fit the class domain boundaries well. Moreover, the algorithm was applied to UCI datasets classification and emotional speech recognition, and the results show that the algorithm has good performance, which means that DHPAINC is a promising classifier.展开更多
Carfentrazone-ethyl and tribenuron-methyl,the two widely used herbicides for weed control in field crops,frequently cause phytotoxicity to wheat seedlings in the field.In this study,a total of 697 wheat accessions con...Carfentrazone-ethyl and tribenuron-methyl,the two widely used herbicides for weed control in field crops,frequently cause phytotoxicity to wheat seedlings in the field.In this study,a total of 697 wheat accessions containing three panels were scanned using wheat90 K and 660 K SNP arrays to identify important herbicide resistance loci.Genome-wide association study(GWAS)revealed 329 significant single-nucleotide polymorphisms(SNPs)with phenotypic variance explained(PVE)of 11.3%to 27.6%.Among these SNPs,15 were detected in multiple environments and they were mainly distributed on chromosomes 1 B,2 D,5 B,5 D,6 D,and 7 D.Further analysis indicated that g HR-5 B(467–587 Mb),g HR-7 D(46–52 Mb),and g HR-1 B(517–580 Mb)were important herbicide resistance loci in wheat.Linkage mapping in a bi-parental population detected one QTL(q HR-1 B)with PVE of 7.44%to8.28%.This is reliable locus because its physical position(554–566 Mb)overlapped with g HR-1 B by GWAS in the genome of Chinese Spring.This study provided some herbicide-resistant germplasm and important genetic loci for identifying genes of common wheat.展开更多
文摘起动控制规律对于辅助动力装置(Auxiliary Power Unit,APU)至关重要。针对APU起动控制规律设计中的控制时序、供油规律、起动过程中的限制及保护等关键技术点进行深入研究,提出一种适应性较好的起动控制规律。经多型APU整机试验验证,提出的起动控制规律可缩短整机调试时间,提高研制效率。
基金Foundation item： Projects（61170199, 60874070） supported by the National Natural Science Foundation of China Project（11A004） supported by the Major Project of Education Department in Hunan Province, China Project（2010GK3067） supported by Science and Technology Planning of Hunan Province, China
文摘Most of the developed immune based classifiers generate antibodies randomly, which has negative effect on the classification performance. In order to guide the antibody generation effectively, a decision hyper plane heuristic based artificial immune network classification algorithm （DHPA1NC） is proposed. DHPAINC taboos the inner regions of the class domain, thus, the antibody generation is limited near the class domain boundary. Then, the antibodies are evaluated by their recognition abilities, and the antibodies of low recognition abilities are removed to avoid over-fitting. Finally, the high quality antibodies tend to be stable in the immune network. The algorithm was applied to two simulated datasets classification, and the results show that the decision hyper planes determined by the antibodies fit the class domain boundaries well. Moreover, the algorithm was applied to UCI datasets classification and emotional speech recognition, and the results show that the algorithm has good performance, which means that DHPAINC is a promising classifier.
基金supported by the National Key Research and Development Program of China(2016YFD0101802)the National Natural Science Foundation of China(3181101544)+1 种基金Henan Major Science and Technology Projects(181100110200)Ten-Thousand Talents Plan(Z04295)of China。
文摘Carfentrazone-ethyl and tribenuron-methyl,the two widely used herbicides for weed control in field crops,frequently cause phytotoxicity to wheat seedlings in the field.In this study,a total of 697 wheat accessions containing three panels were scanned using wheat90 K and 660 K SNP arrays to identify important herbicide resistance loci.Genome-wide association study(GWAS)revealed 329 significant single-nucleotide polymorphisms(SNPs)with phenotypic variance explained(PVE)of 11.3%to 27.6%.Among these SNPs,15 were detected in multiple environments and they were mainly distributed on chromosomes 1 B,2 D,5 B,5 D,6 D,and 7 D.Further analysis indicated that g HR-5 B(467–587 Mb),g HR-7 D(46–52 Mb),and g HR-1 B(517–580 Mb)were important herbicide resistance loci in wheat.Linkage mapping in a bi-parental population detected one QTL(q HR-1 B)with PVE of 7.44%to8.28%.This is reliable locus because its physical position(554–566 Mb)overlapped with g HR-1 B by GWAS in the genome of Chinese Spring.This study provided some herbicide-resistant germplasm and important genetic loci for identifying genes of common wheat.
