检索结果-南通市图书馆

作者： Wenping Ma Feifei ti Congling Li Licheng Jiao Key Lab of Intelligent Perception and image Understanding of Ministry of Education of China Xidian UniversityXi’anChina

Purpose–The purpose of this paper is to present a Differential Immune Clone Clustering Algorithm(DICCA)to solve image ***/methodology/approach–DICCA combines immune clone selection and differential evolution,and two populations are used in the evolutionary *** reproduction and selection,differential mutation,crossover and selection are adopted to evolve two populations,which can increase population diversity and avoid local *** extracting the texture features of an image and encoding them with real numbers,DICCA is used to partition these features,and the final segmentation result is ***–This approach is applied to segment all sorts of images into homogeneous regions,including artificial synthetic texture images,natural images and remote sensing images,and the experimental results show the effectiveness of the proposed ***/value–The method presented in this paper represents a new approach to solving clustering *** novel method applies the idea two populations are used in the evolutionary *** proposed clustering algorithm is shown to be effective in solving image segmentation.

关键词： Differential evolution Clone selection Clustering image segmentation image processing Cluster analysis

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

负输入电压的“平行宇宙(Parallel Universe)”

引用

电子与电脑 2009年第10期9卷 39-42页

作者： John Betten Brian King 德州仪器(ti)

非隔离式正输入拓扑具有一些可用于负输入电压的镜像（mirror-image）拓扑，但是要特别注意控制器的选择以及偏置电源（biaspower）与反馈（feedback）的实施。现在的消费性电子产品大量地使用切换式DC／DC电源。大多数应用所使用的输... 详细信息

非隔离式正输入拓扑具有一些可用于负输入电压的镜像（mirror-image）拓扑，但是要特别注意控制器的选择以及偏置电源（biaspower）与反馈（feedback）的实施。现在的消费性电子产品大量地使用切换式DC／DC电源。大多数应用所使用的输入源都能提供正DC电压作为系统接地的参考值。这些电源通常包括电池、墙式转接器（wall adapter）或稳压AC电源。

关键词：输入电压 DC/DC电源消费性电子产品宇宙平行非隔离式 AC电源控制器

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Inuence of Electron Donating Ability on Reverse Intersystem Crossing Rate for One Kind of Thermally Activated Delayed Fluorescence Molecules

引用

Chinese Journal of Chemical Physics 2018年第3期31卷 291-299,367页

作者： Ming-lang Wang Jian-zhong Fan Li-li Lin Shandong Province Key Laboratory of Medical Physics and image Processing Technology School of Physics and ElectronicsShandong Normal UniversityJinan 250014China Department of Electronics Peking UniversityBeijing 100871China

First-principles calculations are applied for investigating influence of electron donating ability of donor groups in eight thermally activated delayed fluorescence（TADF） molecules on their geometrical structures and transition properties as well as reverse intersystem crossing（RISC） processes. Results show that the diphenylamine substitution in the donor part can slightly change the bond angle but decrease bond length between donor and acceptor unit except for the lowest triplet state（ti） of carbazole-xanthone molecule. As the electron donating ability of donor groups is increased, the overlap between the highest occupied molecular orbital（HOMO） and the lowest unoccupied molecular orbital（LUMO） is decreased. As the diphenylamine groups are added in donor part, the delocalization of HOMO is enlarged,which brings a decreased energy gap(△ES1-T1) between the lowest singlet excited state（S1）and T1 state. Furthermore, with the calculated spin-orbit coupling coefficient(HSO), one finds that the larger value of ■ is, the faster the RISC is. The results show that all investigated molecules are promising candidates as TADF molecules. Overall, a wise molecular design strategy for TADF molecules,in which a small △ES1-T1 can be achieved by enlarging the delocalization of frontier molecular orbitals with large separation between HOMO and LUMO, is proposed.

关键词： Thermally activated delayed fluorescence Donating ability Reverse intersystem crossing Spin-orbit coupling

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

BFA BASED NEURAL NETWORK FOR image COMPRESSION

引用

Journal of Electronics(China) 2008年第3期25卷 405-408页

作者： Chu Ying Mi Hua Ji Zhen Shao Zibo Q. H. Wu ti DSPs Lab Faculty of Information Engineering Shenzhen University Shenzhen 518060 China Department of Electronic ＆ Electrical Engineering University College London London WCIE 7JE UK Department of Electrical Engineering ＆ Electronics The University of Liverpool Liverpool L69 3GJ Ut

A novel Bacterial Foraging Algorithm (BFA) based neural network is presented for image compression. To improve the quality of the decompressed images, the concepts of reproduction, elimination and dispersal in BFA are firstly introduced into neural network in the proposed algorithm. Extensive experiments are conducted on standard testing images and the results show that the pro- posed method can improve the quality of the reconstructed images significantly.

关键词： Bacterial Foraging Algorithm (BFA) Artificial Neural Network (ANN) Back Propagation(BP) image compression

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Embedded Video Processing Based on Davinci Platform System Design

Embedded Video Processing Based on Davinci Platform System D...

引用

2012年计算机应用与系统建模国际会议

作者： Gang Wang Jun Cheng Institute of Intelligent Vision and image Information China Three Gorges University College of Computer and Information Technology China Three Gorges University

This paper main adopts ti company’s TMS320DM6446 DAVINCI series chip designed for a set of video processing system. The system through the simulation of incoming video on A/D conversion, and then through the DSP end compression processing, thus realize real-time transmission and the large capacity of storage. Its hardware design part mainly include: The power modules, video processing module, network transmission module, etc. In this system can realize intelligent algorithm above the transplant, but also as a video processing system operate independently. Software is mainly ubl, uboot transplantation, the operating system’s transplantation, codec engine.

关键词： Davinci Video processing TMS320DM6446 Algorithm transplantation

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：