检索结果-内蒙古大学图书馆

2011 IEEE International Symposium on IT in Medicine and Education, ITME 2011

作者： Gao, Ling Ren, Yilin Lin, Jianqiang Institute of Information Science and Engineering ShanDong Normal University Shandong Provincial Key Laboratory for Distributed Computer Software Novel Technology Jinan 250014 China School of Life Science Shandong Normal University Jinan 250014 China State Key Lab of Microbial Technology Shandong University Jinan 250014 China

By using virtual instrument technology, a direct digital control bioreactor is developed, which is able to be remote controlled through internet. Mathematical model of the bioreaction system is developed, which is use... 详细信息

ISBN: (纸本)9781612847023

关键词： Bioreactors

来源：评论

学校读者我要写书评

暂无评论

Color-mood-aware clothing re-texturing

Color-mood-aware clothing re-texturing

引用

12th International Conference on computer-Aided Design and computer Graphics, CAD/Graphics 2011

作者： Shen, Jianbing Sun, Hanqiu Mao, Xiaoyang Guo, Yanwen Jin, Xiaogang Beijing Laboratory of Intelligent Information Technology School of Computer Science Beijing Institute of Technology Beijing 100081 China Department of Computer Science and Engineering Chinese University of Hong Kong Hong Kong Hong Kong University of Yamanashi Japan National Key Lab. for Novel Software Technology Nanjing University China State Key Lab. of CAD and CG Zhejiang University Hangzhou 310027 China

ISBN: (纸本)9780769544977

In this paper, we present a novel color-mood-aware technique to re-texture clothing in a photograph. An efficient classification algorithm is developed to classify clothing textures using color mood scheme. To re-texture the clothing, our approach first computes the gradient maps for the cloth region to be replaced and then calculates the texture distortion coordinates on the projected cloth region according to the gradient maps. After the user selects a target clothing texture from the classified clothing texture database, the lighting and shading effects on the original photograph is transferred using the HSV color space. Experimental results show that the proposed approach successfully re-textures the clothes in photographs while preserving the geometry and lighting features. © 2011 IEEE.

关键词： Color

来源：评论

学校读者我要写书评

暂无评论

A QoS-assured trust-driven semantic web service discovery method

引用

Journal of Convergence Information Technology 2011年第7期6卷 162-171页

作者： Cao, Bu-Qing Liu, Jian-Xun Li, Bing Key Lab of Knowledge Processing and Networked Manufacturing and School of Computer Science and Engineering Hunan University of Science and technology Xiangtan 411201 China State Key Laboratory of Software Engineering and School of Computer Wuhan University Wuhan Hubei 430072 China

It have become very difficult that users can find the best, credible web service for some proposed semantic web service discovery methods, because web service environment has become open, autonomic, dynamic, and deceptive. This paper proposes a QoS-assured trust-driven semantic web service discovery method i.e. TDSWSD. This method, firstly, describes and labels web services by ontology technology, and then makes use of the existing keyword matching method to carry basic matching;secondly, function matching will be done by ontology-based concept semantic similarity calculation method;finally, QoS-assured trust measure method will be designed to carry credible QoS matching. Compared with existing methods, the experimental results show that this method can not only automatically find the service to meet user' requirements, but also ensure the validity and reliability of service discovery.

关键词： Web services

来源：评论

学校读者我要写书评

暂无评论

Multi-user private keyword search for cloud computing

Multi-user private keyword search for cloud computing

引用

2011 3rd IEEE International Conference on Cloud Computing Technology and science, CloudCom 2011

作者： Yang, Yanjiang Lu, Haibing Weng, Jian Institute for Infocomm Research Singapore Singapore Dept. of Operations Management and Information Systems Leavey School of Business Santa Clara University United States Department of Computer Science Emergency Technology Research Center of Risk Evaluation and Prewarning on Public Network Security Jinan University Guangzhou China State Key Laboratory of Information Security Institute of Software Chinese Academy of Sciences China State Key Lab. of Networking and Switching Technology Beijing University of Posts and Telecommunications China

ISBN: (纸本)9780769546223

Enterprises outsourcing their databases to the cloud and authorizing multiple users for access represents a typical use scenario of cloud storage services. In such a case of database outsourcing, data encryption is a good approach enabling the data owner to retain its control over the outsourced data. Searchable encryption is a cryptographic primitive allowing for private keyword based search over the encrypted database. The above setting of enterprise outsourcing database to the cloud requires multi-user searchable encryption, whereas virtually all of the existing schemes consider the single-user setting. To bridge this gap, we are motivated to propose a practical multi-user searchable encryption scheme, which has a number of advantages over the known approaches. The associated model and security requirements are also formulated. We further discuss to extend our scheme in several ways so as to achieve different search capabilities. © 2011 IEEE.

关键词： Outsourcing

来源：评论

学校读者我要写书评

暂无评论

An Uncertainty Enhanced Trust Evolution Strategy for e-science

引用

Journal of computer science & Technology 2010年第6期25卷 1225-1236页

作者：杜薇崔国华刘伟 School of Computer Science and Technology Huazhong University of Science and Technology College of Computer Science and Technology Wuhan University of Technology State Key Lab of Software Engineering Wuhan University State Key Laboratory for Novel Software Technology Nanjing University

Resources shared in e-science have critical requirements on *** subjective trust management is essential to guarantee users＇ collaborations and communications on such a promising *** an important nature of subjective trust,uncertainty should be preserved and exhibited in trust definition,representation and *** the drawbacks of existing mechanisms based on random mathematics and fuzzy theory,this paper designs an uncertainty enhanced trust evolution strategy based on cloud model *** define subjective trust as trust *** we propose new algorithms to propagate,aggregate and update ***,based on the concept of similar cloud,a method to assess trust level is put *** simulation results show the effiectiveness,rationality and efficiency of our proposed strategy.

关键词： cloud model theory similar cloud operator subjective trust trust cloud

来源：评论

学校读者我要写书评

暂无评论

A General Sharing Model Based on Proxy Re-encryption

A General Sharing Model Based on Proxy Re-encryption

引用

International Conference on Intelligent Information Hiding and Multimedia Signal Processing (IIHMSP)

作者： Guojun Ma Qingqi Pei Yuchen Wang Xiaohong Jiang The State Key Laboratory of Integrated Services Networks Xidian University Xi'an China School of Electronic Engineering University of Electronic Science and Technology of China Chengdu China Key Lab of Computer Networks and Information Security of Ministry of Education Xidian University Xi'an China

Content sharing is one of the most significant issues of Digital Rights Management (abbr. DRM). Various schemes for content sharing have been presented in the past years. However, the main goals of these schemes are to solve portability problems instead of rational sharing between different users who are not family members. In this work, we propose an initial step toward this rational sharing and present a general sharing model based on proxy re-encryption. Our model can support the flexible sharing mechanism, with which the user can choose any of the purchased content to share with any legal device, and the content provider can know and limit the number of sharing devices to achieve some novel DRM policies such as pay-per-sharing. To our best knowledge, our sharing model is the first model for content sharing between different users' devices who are not family members using proxy re-encryption. With rational applications, our model can benefit for both the user and content provider to achieve win-win development.

关键词： Licenses Public key Computational modeling Encryption Educational institutions Law

来源：评论

学校读者我要写书评

暂无评论

Topology-based streamline placement algorithm for 2D flow field

引用

Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology 2011年第SUPPL.1期31卷 151-155页

作者： Zhang, Wen-Yao Sun, Bo Wang, Yi Beijing Lab of Intelligent Information Technology School of Computer Science and Technology Beijing Institute of Technology Beijing 100081 China State Key Laboratory of Explosion Science and Technology Beijing Institute of Technology Beijing 100081 China

To highlight the structure of 2D flow fields and keep streamlines evenly-spaced as possible, a new algorithm of streamline placements is presented in this paper. By analyzing the topology of underlying flow fields, the topological skeleton is extracted, which then segments the flow fields into topological areas. Topological skeleton is used as initial streamlines. And additional streamlines are recursively added at the centers of topological areas, until all of them are filled with streamlines. The number and density of streamlines are both determined by a virtual control grid that is superposed on the domain of flow fields. By adjusting the parameters of the control grid, varying density of the placement can be obtained to meet the requirements of multiresolution analysis. Test results show that the method presented in this paper can achieve high quality of streamline placements, and improve the effect of streamline visualizations.

关键词： Flow fields

来源：评论

学校读者我要写书评

暂无评论

Fast visualization of 3D explosion field

引用

Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology 2011年第SUPPL.1期31卷 156-160页

作者： Wang, Yi Zhang, Wen-Yao Ning, Jian-Guo State Key Laboratory of Explosion Science and Technology Beijing Institute of Technology Beijing 100081 China Beijing Lab of Intelligent Information Technology School of Computer Science and Technology Beijing Institute of Technology Beijing 100081 China

Fast visualization of 3D explosion field is studied and implemented by a ray casting algorithm with accelerated processing, based on characteristics of explosion field. With transfer functions and Phong illumination model, opacity look-up table and shading look-up table of each media in 3D field are made. It reduces the operations remarkably. A boundary box technique is utilized to avoid the operations to invalid pixels and the sampling in empty voxel, combined with other methods. Using the Bresenham algorithm and pre-termination method, the efficiency of ray casting is greatly increased. Experimental results show that the accelerated ray casting algorithm can produce the required quality images, speed up the image generation, and meet the requirements of interactive control.

关键词： Visualization

来源：评论

学校读者我要写书评

暂无评论

Probability logic of finitely additive beliefs

引用

Journal of Logic, Language and Information 2010年第3期19卷 247-282页

作者： Zhou, Chunlai State Key Laboratory of Intelligent Technology and Systems Tsinghua National Lab for Information Science and Technology Department of Computer Science and Technology Tsinghua University 100084 Beijing China

Probability logics have been an active topic of investigation of beliefs in type spaces in game theoretical economics. Beliefs are expressed as subjective probability measures. Savage's postulates in decision theory imply that subjective probability measures are not necessarily countably additive but finitely additive. In this paper, we formulate a probability logic Σ₊ that is strongly complete with respect to this class of type spaces with finitely additive probability measures, i.e. a set of formulas is consistent in Σ₊ iff it is satisfied in a finitely additive type space. Although we can characterize Σ₊-theories satisfiable in the class as maximally consistent sets of formulas, we prove that any canonical model of maximally consistent sets is not universal in the class of type spaces with finitely additive measures, and, moreover, it is not a type space. At the end of this paper, we show that even a minimal use of probability indices causes the failure of compactness in probability logics. © Springer science+Business Media B.V. 2009.

关键词： Modal logic Probabilistic beliefs Reasoning about probabilities Type spaces

来源：评论

学校读者我要写书评

暂无评论

Discriminative codeword selection for image representation

Discriminative codeword selection for image representation

引用

18th ACM International Conference on Multimedia ACM Multimedia 2010, MM'10

作者： Zhang, Lijun Chen, Chun Bu, Jiajun Chen, Zhengguang Tan, Shulong He, Xiaofei Zhejiang Key Laboratory of Service Robot College of Computer Science Zhejiang University Hangzhou China State Key Lab. of CAD and CG College of Computer Science Zhejiang University Hangzhou China

ISBN: (纸本)9781605589336

Bag of features (BoF) representation has attracted an increasing amount of attention in large scale image processing systems. BoF representation treats images as loose collections of local invariant descriptors extracted from them. The visual codebook is generally constructed by using an unsupervised algorithm such as K-means to quantize the local descriptors into clusters. Images are then represented by the frequency histograms of the codewords contained in them. To build a compact and discriminative codebook, codeword selection has become an indispensable tool. However, most of the existing codeword selection algorithms are supervised and the human labeling may be very expensive. In this paper, we consider the problem of unsupervised codeword selection, and propose a novel algorithm called Discriminative Codeword Selection (DCS). Motivated from recent studies on discriminative clustering, the central idea of our proposed algorithm is to select those codewords so that the cluster structure of the image database can be best respected. Specifically, a multi-output linear function is fitted to model the relationship between the data matrix after codeword selection and the indicator matrix. The most discriminative codewords are thus defined as those leading to minimal fitting error. Experiments on image retrieval and clustering have demonstrated the effectiveness of the proposed method. © 2010 ACM.

关键词： Image retrieval

来源：评论

学校读者我要写书评

暂无评论

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

请选择保存的检索档案：

请选择收藏分类：

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

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

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：