随着Polymorphic蠕虫变形技术的不断发展,如何快速有效地提取其特征是入侵检测中特征提取领域的一个重要研究方向。采用基于模式的特征提取算法NLA(Normalized Local Alignment),通过对多个可疑Polymorphic蠕虫流量进行序列比对,自动提...随着Polymorphic蠕虫变形技术的不断发展,如何快速有效地提取其特征是入侵检测中特征提取领域的一个重要研究方向。采用基于模式的特征提取算法NLA(Normalized Local Alignment),通过对多个可疑Polymorphic蠕虫流量进行序列比对,自动提取高相似度公共子序列,以向量的形式构造蠕虫特征。实验结果表明该算法在误报率和漏报率方面均优于传统算法。展开更多
[Objective] The study was to isolate and identify the pathogen of Pandora neoaphidis and to determine its pathogenicity against turnip aphid （Lipaphis erysimi）.[Method] Based on the morphological characteristics,the...[Objective] The study was to isolate and identify the pathogen of Pandora neoaphidis and to determine its pathogenicity against turnip aphid （Lipaphis erysimi）.[Method] Based on the morphological characteristics,the species of pathogenic fungus was identified.Spore shower method was used to carry out bioassay on the pathogen against turnip aphid.[Result] Primary conidia were ovoid,bitunicate and uninucleate,（24.7±1.4）μm×（10.7±0.9）μm,L/D=2.3±0.2.Secondary conidia had the similar shape with the primary ones,（18.6±2.1）μm×（13.3±1.3）μm,L/D=1.4±0.2.Hyphal body was like mycelium with the diameter of （10.6±0.8）μm.Conidiophores had palmate branch with the diameter of （10.0±0.9）μm.Pseudocystidia was not branched,which had rough base with the diameter of （19.2±1.7）μm,and gradually became more angular towards the apex with the diameter of （8.0±0.9）μm at tips.Rhizoid was like monohyphal shape with the diameter of （21.0±3.0）μm at base,the terminal apex had regular discoid holdfast.No resting spores were observed.The lethal dose of the pathogen against turnip aphid was 18.2/mm2.[Conclusion] The entomopathogenic fungus against turnip aphid was identified to be Pandora neoaphidis,and the pathogen was confirmed to have strong pathogenicity against turnip aphid.展开更多
Pandora effect and taboo effect provides rich themes for urban public art, such as nude sex, instinctive death, rebellious fantasy, the expressive subject matter of excitement, recording subject matter of time, explic...Pandora effect and taboo effect provides rich themes for urban public art, such as nude sex, instinctive death, rebellious fantasy, the expressive subject matter of excitement, recording subject matter of time, explicit satire. Designers use the particular psychology of the public to produce many themes stimulating psychological reactions and comforting spiritual needs, stimulate citizens' perception and experience about arts, and make urban public art more attractive.展开更多
近年来,基于深度学习的场景文本检测算法层出不穷,对于EAST在自然场景中对长文本和较大文本检测不准确,存在容易出现误检漏检的问题。论文提出一种基于NLA-EAST网络(Non-Local Attention-An Efficient and Accurate Scene Text Detector...近年来,基于深度学习的场景文本检测算法层出不穷,对于EAST在自然场景中对长文本和较大文本检测不准确,存在容易出现误检漏检的问题。论文提出一种基于NLA-EAST网络(Non-Local Attention-An Efficient and Accurate Scene Text Detector)上的新颖的文本检测算法,通过ASPP空洞卷积来扩大感受野,来获得更大感受野的上下文信息。并且通过结合EAST和非局部注意力机制来精确定位文本边界,准确检测自然场景下的文本位置,克服了EAST对于较大文本和长文本的漏检和误检。对提出的方法进行了数据集测试,在文本定位精度方面由于竞争方法,在ICDAR 2015数据集中,F值达到了84.5%,在天池数据集上,F值达到了84.82%。展开更多
文摘随着Polymorphic蠕虫变形技术的不断发展,如何快速有效地提取其特征是入侵检测中特征提取领域的一个重要研究方向。采用基于模式的特征提取算法NLA(Normalized Local Alignment),通过对多个可疑Polymorphic蠕虫流量进行序列比对,自动提取高相似度公共子序列,以向量的形式构造蠕虫特征。实验结果表明该算法在误报率和漏报率方面均优于传统算法。
基金Supported by Key Projects in Shaoguang Institute (200402)~~
文摘[Objective] The study was to isolate and identify the pathogen of Pandora neoaphidis and to determine its pathogenicity against turnip aphid （Lipaphis erysimi）.[Method] Based on the morphological characteristics,the species of pathogenic fungus was identified.Spore shower method was used to carry out bioassay on the pathogen against turnip aphid.[Result] Primary conidia were ovoid,bitunicate and uninucleate,（24.7±1.4）μm×（10.7±0.9）μm,L/D=2.3±0.2.Secondary conidia had the similar shape with the primary ones,（18.6±2.1）μm×（13.3±1.3）μm,L/D=1.4±0.2.Hyphal body was like mycelium with the diameter of （10.6±0.8）μm.Conidiophores had palmate branch with the diameter of （10.0±0.9）μm.Pseudocystidia was not branched,which had rough base with the diameter of （19.2±1.7）μm,and gradually became more angular towards the apex with the diameter of （8.0±0.9）μm at tips.Rhizoid was like monohyphal shape with the diameter of （21.0±3.0）μm at base,the terminal apex had regular discoid holdfast.No resting spores were observed.The lethal dose of the pathogen against turnip aphid was 18.2/mm2.[Conclusion] The entomopathogenic fungus against turnip aphid was identified to be Pandora neoaphidis,and the pathogen was confirmed to have strong pathogenicity against turnip aphid.
基金Supported by Art Project of the Ministry of Education P.R.C."The Urban Landscape Art Design and the Spiritual Ecology"(09YJC760004)National Natural Science Foundation"Optimal Design Strategy Based on the Transportation Hub of the Subway Station Architecture Space"(51178038)
文摘Pandora effect and taboo effect provides rich themes for urban public art, such as nude sex, instinctive death, rebellious fantasy, the expressive subject matter of excitement, recording subject matter of time, explicit satire. Designers use the particular psychology of the public to produce many themes stimulating psychological reactions and comforting spiritual needs, stimulate citizens' perception and experience about arts, and make urban public art more attractive.
文摘近年来,基于深度学习的场景文本检测算法层出不穷,对于EAST在自然场景中对长文本和较大文本检测不准确,存在容易出现误检漏检的问题。论文提出一种基于NLA-EAST网络(Non-Local Attention-An Efficient and Accurate Scene Text Detector)上的新颖的文本检测算法,通过ASPP空洞卷积来扩大感受野,来获得更大感受野的上下文信息。并且通过结合EAST和非局部注意力机制来精确定位文本边界,准确检测自然场景下的文本位置,克服了EAST对于较大文本和长文本的漏检和误检。对提出的方法进行了数据集测试,在文本定位精度方面由于竞争方法,在ICDAR 2015数据集中,F值达到了84.5%,在天池数据集上,F值达到了84.82%。
