检索结果-南通市图书馆

Arabidopsis vq10 interacts with WRKY8 to modulate basal defense against Botrytis cinerea

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Integrative Plant Biology 2018年第10期60卷 956-969页

作者： Junqiu Chen Houping Wang Yang Li Jinjing Pan Yanru Hu Diqiu Yu Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesKunming650223China University of Chinese Academy of Sciences Beijing 100049China

Recent studies in Arabidopsis have revealed that some vq motif-containing proteins physically interact with WRKY transcription factors; however, their specific biological functions are still poorly understood. In this study, we confirmed the interaction between vq1o and WRKY8, and show that vq1o and WRKY8 formed a complex in the plant cell nucleus. Yeast two-hybrid analysis showed that the middle region of WRKY8 and the vq motif of vqlo are critical for their interaction, and that this interaction promotes the DNA-binding activity of WRKY8. Further investigation revealed that the vqlO protein was exclusively localized in the nucleus, and vq1o was predominantly expressed in siliques, vq1o expression was strongly responsive to the necrotrophic fungal pathogen, Botrytis cinerea and defense-relatedhormones. Phenotypic analysis showed that disruption of vqlo increased mutant plants susceptibility to the fungal pathogen B. cinerea, whereas constitutive-expres- sion of vqlo enhanced resistance to B. cinerea. Consis- tent with these findings, expression of the defenserelated PLANT DEFENSIN1.2 （PDFt2） gene was decreased in vqlo mutant plants, after B. cinerea infection, but increased in vq1o-overexpressing transgenic plants. Taken together, our findings provide evidence that vqlo physically interacts with WRKY8 and positively regulates plant basal resistance against the necrotrophic fungal pathogen B. cinerea.

关键词： Arabidopsis vq10 interacts with WRKY8 to modulate basal defense against Botrytis cinerea vq

Fast compression of computer-generated holographic images based on a GPU-accelerated skip-dimension vector quantization method

在线全文

学校读者我要写书评

暂无评论

Chinese Optics Letters 2013年第5期11卷 28-32页

作者： Y.K.Lam W.C.Situ P.W.M.Tsang Department of Electronic Engineering City University of Hong Kong

A method for fast and low bit-rate compression of digital holograms based on a new vector quantization （vq） method known as the skip-dimension vq （SDvq） is proposed. Briefly, a complex hologram is converted into a real off-axis hologram, and partitioned into a set of image vectors. The image vectors are passed into a graphic processing unit （GPU）, and compressed through SDvq into a set of code indices considerably smaller in data size than the source hologram. Experimental evaluation reveals that our scheme is capable of compressing a digital hologram to a compression ratio of over 500 times, in approximately 20-22 ms.

关键词： GPU Fast compression of computer-generated holographic images based on a GPU-accelerated skip-dimension vector quantization method vq

(∈γ, ∈γ ∨qδ)-intuitionistic Fuzzy(Soft) Filter of BL-algebras

在线全文

学校读者我要写书评

暂无评论

Chinese Quarterly Journal of Mathematics 2014年第1期29卷 65-75页

作者： YANG Yong-wei XIN Xiao-long HE Peng-fei Department of Mathematics Northwest University Xi'an 710127 China

In the paper,in order to further study the properties of filters of BL-algebras,we propose the concepts of the(∈_γ,∈_γ∨_(qδ))-intuitionistic fuzzy filters and(∈_γ,∈_γ∨_(qδ))-intuitionistic fuzzy soft filters of BL-algebras and derive some related results.Finally,we discuss the properties of images and inverse images of(∈_γ,∈_γV_(qδ))-intuitionistic fuzzy soft filters of BL-algebras.

关键词： BL-代数模糊滤镜过滤器 vq 直觉图像

REPRESENTATION THEOREM FOR LINEAR,ISOTROPIC TENSOR FUNCTIONS OF A SKEW ARGUMENT

在线全文

学校读者我要写书评

暂无评论

Applied Mathematics and Mechanics(English Edition) 1983年第3期4卷 311-316页

作者：郭仲衡 Department of Mathematics Beijing Peking University

The present paper offers two proofs of the representationtheorem for linear,isotropic tensor functions of a skew ar-gument.The first proof is new.The second one is basicallyalong the lines of reasoning exploited in[1]... 详细信息

关键词： vq REPRESENTATION THEOREM FOR LINEAR,ISOTROPIC TENSOR FUNCTIONS OF A SKEW ARGUMENT

A high fidelity vq coding algorithm with region adaptive subbanding

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2005年第1期6卷 43-48页

作者：杨仲琦白直灿李冬梅杨长生 Department of Computer Zhejiang University Hangzhou 310027 China

Image subbands can be obtained by using filterbank. Traditional compression method uses direct entropy coding for each subband. After studying the energy distribution in image subbands, we proposed a vector quantization (vq) coding algorithm to image subband. In the algorithm, vector quantizers were adaptively designed for high-frequency bands in an image. In particular, the edges of the image were examined and fewer bits were assigned to high-energy regions. The experimental result showed that the algorithm had higher SNR and higher compression ratio than possible by traditional subband coding, JPEG and JPEG 2000.

关键词：图象压缩图象编码保真度运算法则 vq 量子化

A New Image Coding Algorithm Based on Self-Organizing Neural Network

在线全文

学校读者我要写书评

暂无评论

The Journal of China Universities of Posts and Telecommunications 1995年第1期2卷 40-43页

作者： LiHongsong QuanZiyi DepartmentofRadioEngineering BeijingUniversityofPostsandTelecommunicationsBeijing100088P.R.China De

ＡＮｅｗＩｍａｇｅＣｏｄｉｎｇＡｌｇｏｒｉｔｈｍＢａｓｅｄｏｎＳｅｌｆ－ＯｒｇａｎｉｚｉｎｇＮｅｕｒａｌＮｅｔｗｏｒｋＬｉＨｏｎｇｓｏｎｇＡＮＤＱｕａｎＺｉｙｉ（ＤｅｐａｒｔｍｅｎｔｏｆＲａｄｉｏＥｎｇｉｎｅｅｒｉｎ... 详细信息

ＡＮｅｗＩｍａｇｅＣｏｄｉｎｇＡｌｇｏｒｉｔｈｍＢａｓｅｄｏｎＳｅｌｆ－ＯｒｇａｎｉｚｉｎｇＮｅｕｒａｌＮｅｔｗｏｒｋＬｉＨｏｎｇｓｏｎｇＡＮＤＱｕａｎＺｉｙｉ（ＤｅｐａｒｔｍｅｎｔｏｆＲａｄｉｏＥｎｇｉｎｅｅｒｉｎｇ，ＢｅｉｊｉｎｇＵｎｉｖｅｒｓｉ...

关键词：图像处理矢量量化自组中性网 vq 算法

在线全文

学校读者我要写书评

暂无评论

图像多小波域矢量量化策略

红外与激光工程 2004年第5期33卷 520-523页

作者：彭宁嵩杨杰上海交通大学图像处理与模式识别研究所

提出一种基于多小波变换结合矢量量化的图像编码算法(MDWT+vq)。首先对图像进行多小波分解,然后对高频系数用改进后的LBG算法形成的码书进行vq编码。算法充分利用了多小波域不同分辨率层间各方向子图像的相似性,仅对最高分辨率层进行码... 详细信息

提出一种基于多小波变换结合矢量量化的图像编码算法(MDWT+vq)。首先对图像进行多小波分解,然后对高频系数用改进后的LBG算法形成的码书进行vq编码。算法充分利用了多小波域不同分辨率层间各方向子图像的相似性,仅对最高分辨率层进行码书地址索引,低级分辨率层的系数按照一定的组织形式直接套用最高分辨率层的地址索引信息。对比实验的结果验证了该算法在提高图像的重建质量以及在降低位码率方面均比传统的单小波图像编码算法有一定的提高。

关键词：矢量量化多小波 vq 码书图像编码算法 LBG算法分辨率索引地址子图像

在线全文

学校读者我要写书评

暂无评论

基于Fvq/HMM的无教师说话人自适应

电子学报 2002年第7期30卷 967-969页

作者：赵力邹采荣吴镇扬东南大学无线电工程系江苏南京210096

本文提出了一种新的语音识别方法 ,它综合了vq、HMM和无教师说话人自适应算法的优点 ,在每个状态通过用矢量量化误差值取代传统HMM的输出概率值来建立Fvq/HMM ,同时采用基于模糊矢量量化的无教师自适应算法 ,来改变Fvq/HMM的各状态的码... 详细信息

本文提出了一种新的语音识别方法 ,它综合了vq、HMM和无教师说话人自适应算法的优点 ,在每个状态通过用矢量量化误差值取代传统HMM的输出概率值来建立Fvq/HMM ,同时采用基于模糊矢量量化的无教师自适应算法 ,来改变Fvq/HMM的各状态的码字 ,从而实现对未知说话人的码本适应 .本文通过非特定人汉语数码 (孤立和连续数码 )语音识别实验 ,把该新的组合方法同基于CHMM的自适应和识别方法进行了比较 ,实验结果表明该方法的自适应和识别效果优于基于CHMM的方法 .

关键词：语音识别模糊集 vq HMM 无教师说话人自适应矢量量化法隐马尔可夫模型法

A vq study on diatone in Putonghua

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Acoustics 2000年第3期19卷 247-258页

作者： KONG Jiangping (EE Dept., City University of Hong Kong) (Institute of Nationality Studies, Chinese Academy of Social Sciences Beijing 100081) LU Shinan (Institute of Acoustics, Academica Sinica Beijing 100080)

The systematical study on the model of diatone in Putonghua on the basis of real materials through the techniques of polynomial curve fitting and vq (vector quantization) are presented. The results show: 1. Most of the diatones have several sub-classes, though the scatter of some diatone samples is small. It means that an average model is not sufficient enough to represent all samples in a sub-class. 2. The differences between the diatone model are incarnated on the differences of the highest values of Fo contours, which are correlated with the stress of the first or second syllable. 3. It is a practical and effective method in modeling the diatones in Putonghua through the techniques of polynomial curve fitting and vq.

关键词： A vq study on diatone in Putonghua vq