检索结果-内蒙古大学图书馆

作者： Zhang, Mingwu Mu, Yi Shen, Jian Huang, Xinyi School of Computer Science Hubei University of Technology Wuhan430068 China School of Computer and Software Nanjing University of Information Science and Technology Nanjing China Fujian Provincial Key Laboratory of Network Security and Cryptology Fujian Normal University China School of Computing and Information Technology University of Wollongong NSW2522 Australia

A program obfuscator is a compiling algorithm that takes a program/circuit as input and generates a new garbled circuit to implement the same functionality as before while obtaining hard-to-understand in some sense, that is, infeasible to learn information from the garbled circuit. In order to obtain a practical application, an obfuscation should satisfy equivalent in functionality, polynomial slowdown in efficiency, and virtual black-box in security. In this paper, we model a stronger cryptographic obfuscation that does not only achieves the obfuscated circuit obscurity but also supports input re-key privacy. In order to implement the re-encryption obfuscation, we at first propose a key-privacy two-level encryption mechanism that implicitly supports the transformation from level-2 ciphertext into level-1 one, which provides an efficient method to re-encrypt the ciphertext without explicitly decryption procedure. Under the mechanism of two-level encryption and function of re-encryption, we construct an obfuscation of re-encryption that takes as input a probabilistic (keys) circuit and outputs a transformed circuit. We also give the proof that the obfuscator achieves the average-case security for the circuit family under the extended DBDH assumption and Decisional Linear assumption in the standard model. Copyright © 2016 John Wiley & Sons, Ltd. Copyright © 2016 John Wiley & Sons, Ltd.

关键词： Timing circuits

来源：评论

学校读者我要写书评

暂无评论

Paralleled Extraction Method for Content of Invoice Image Based on TPL

Paralleled Extraction Method for Content of Invoice Image Ba...

引用

2015 International Conference on Advanced Management Science and Information Engineering(AMSIE 2015)

作者： H.Y.Jin B.Xing X.H.Hei School of Computer Science & Engineering Xi'an University of Technology Shaanxi Key Laboratory for Network Computing and Security Technology

The paper mainly uses a mixed strategy of data and task parallelism to realize parallel extraction date information of *** at the deficiency of ordinary pipeline mode for parallel extraction date information from invoice,we explore a new method of load balanced pipeline based on multiple producers,using parallelism model of mixed data and task provided by TPL(the Task Parallel Library).Finally,it shows this load balanced pipeline program can almost get a linear speedup,which can reach 7.2x in a 8 cores system.

关键词： paralleled TPL pipeline load balanced

来源：评论

学校读者我要写书评

暂无评论

A method of oversized image generation based on stitching JPEG file streams

International Journal of Signal Processing, Image Processing...

引用

International Journal of Signal Processing, Image Processing and Pattern Recognition 2015年第8期8卷 159-168页

作者： Sun, Qindong Hua, Wu Tian, Minying Wang, Yan School of Computer Science and Engineering Xi’an University of Technology Xi’an China Shaanxi Key Laboratory of Network Computing and Security Xi’an University of Technology Xi’an China

Due to memory limitation, the displaying and processing of the oversized images have been a bottleneck for various applications, which is a hot research spot in the image processing field. The traditional methods are almost based on the BMP format to generate oversized images, of which the time and space complexity are very high. In this paper, we have deeply analyzed the encoding scheme of JPEG image and proposed an oversized image generation method based on stitching JPEG file streams. According to this method, the oversized images are block plotted and then transformed and saved as JPEG format files respectively. In the end, the block JPEG files are then combined into an integrated JPEG image. The experiment results show that, our method can effectively improve the speed of oversized image generation and reduce the memory consumption. The time and space performance of our method are better than existing methods. © 2015 SERSC.

关键词： Image enhancement

来源：评论

学校读者我要写书评

暂无评论

Research on Storage and Retrieval Method of Mass Data for High-Speed Train

Research on Storage and Retrieval Method of Mass Data for Hi...

引用

International Conference on Computational Intelligence and security

作者： Bin Wang Fan Li Xinhong Hei Weigang Ma Lei Yu Shaanxi Key Laboratory for Network Computing and Security Technology Xi'an University of Technology Xi'an China School of Computer Science and Engineering Xi'an University of Technology Xi'an China

In order to ensure the safeties of high-speed train, a lot of sensors are installed in the train to real-time monitor its operation status. These sensors collect amounts of data which may be several GBs for one time operation of one train. Such big amount data need to be stored and managed with high efficiency. In this paper, a hybrid storage architecture by combine database and file system is proposed, in which the separation on the row and column is performed respectively when storing the raw monitored data. Further, an improved compression algorithm is used to compress double float data in the monitored data. The simulation result shows that the proposed method is effective and feasible.

关键词： Memory Indexes File systems Monitoring Sensors Servers

来源：评论

学校读者我要写书评

暂无评论

PEVTS: Privacy-Preserving Electric Vehicles Test-Bedding Scheme

PEVTS: Privacy-Preserving Electric Vehicles Test-Bedding Sch...

引用

International Conference on Parallel and Distributed Systems (ICPADS)

作者： Xu Yang Joseph K. Liu Wei Wu Man Ho Au Willy Susilo Fujian Provincial Key Laboratory of Network Security and Cryptology Fujian Normal University China and State Key Laboratory of Cryptology Beijing China Faculty of Information Technology Monash University Australia Department of Computing Hong Kong Polytechnic University Hong Kong School of Computer Science and Software Engineering University of Wollongong Australia

Electric Vehicle (EV) infrastructure is relatively new in many countries. Due to the recency of an EV infrastructure, it is important to carry out a series of testing programs. Furthermore, authenticity for collection of data is necessary for testing programs in order to provide accurate results. At the same time, user privacy should not cease since tracing one's daily logistic movements or behaviour from the EV testing programs means breaching one's privacy. In this paper, we propose a novel solution PEVTS for enabling both data authenticity and user privacy concurrently. Our proposed system provides great flexibility to the authority to choose any arbitrary set of authenticated users for testing in every time period. At the same time, it provides anonymity for all participating users. Yet it can trace any vehicle within a time period for statistical purpose. We give a detailed description of our system. We also implement the prototype of our system to show its practicality.

关键词： Testing Privacy Cryptography Electric vehicles Data privacy Authentication

来源：评论

学校读者我要写书评

暂无评论

Color image encryption using iterative phase retrieve process in quaternion Fourier transform domain

Color image encryption using iterative phase retrieve proces...

引用

2014年光子与光学工程国际会议暨西部光子学学术会议

作者： Liansheng Sui K.Duan Xi’an University of Technology &Shaanxi Key Laboratory for Network Computing and Security Technology(China) Xi’an University of Technology(China)

ISBN: (纸本)9781628415650

A single-channel color image encryption method is proposed based on iterative phase retrieve process in quaternion Fourier transform ***,three components of the plain color image is confused respectively by using cat ***,the confused components are combined into a pure quaternion image,which is encoded to the phase only function by using an iterative phase retrieve ***,the phase only function is encrypted into the gray scale ciphertext with stationary white noise distribution based on the chaotic diffusion,which has camouflage property to some *** corresponding plain color image can be recovered from the ciphertext only with correct keys in the decryption *** results verify the feasibility and effectiveness of the proposed method.

关键词： Fourier optics and signal processing,phase retrieval,cat map

来源：评论

学校读者我要写书评

暂无评论

Independent component analysis based on information bottleneck

Abstract and Applied Analysis

引用

Abstract and Applied Analysis 2015年第1期2015卷

作者： Ke, Qiao Zhang, Jiangshe Srivastava, H.M. Wei, Wei Chen, Guang-Sheng School of Mathematics and Statistics Xi'An Jiaotong University Xi'an 710049 China Department of Mathematics and Statistics University of Victoria Victoria V8W3R4 BC Canada School of Computer Science and Engineering Xi'An University of Technology Shaanxi Key Laboratory for Network Computing and Security Technology Xi'an 710048 China Department of Construction and Information Engineering Guangxi Modern Vocational Technology College Hechi Guangxi 547000 China

The paper is mainly used to provide the equivalence of two algorithms of independent component analysis (ICA) based on the information bottleneck (IB). In the viewpoint of information theory, we attempt to explain the two classical algorithms of ICA by information bottleneck. Furthermore, via the numerical experiments with the synthetic data, sonic data, and image, ICA is proved to be an edificatory way to solve BSS successfully relying on the information theory. Finally, two realistic numerical experiments are conducted via FastICA in order to illustrate the efficiency and practicality of the algorithm as well as the drawbacks in the process of the recovery images the mixing images. © 2015 Qiao Ke et al.

关键词：

来源：评论

学校读者我要写书评

暂无评论

A Parking Guidance Method Based on Parallel Particle Swarm Optimization Algorithm

A Parking Guidance Method Based on Parallel Particle Swarm O...

引用

International Conference on Computational Intelligence and security

作者： Bin Wang Ying Liu Xinhong Hei Lei Wang Zhiqiang Zhang Shaanxi Key Laboratory for Network Computing and Security Technology Xi'an University of Technology Xi'an China School of Computer Science and Engineering Xi'an University of Technology Xi'an China

ISBN: (纸本)9781479974351

Aiming at the problem of intelligent path guidance in the parking lot, an improved Particle Swarm Optimization Algorithm(PSO) is proposed in this paper to find the optimal path. In order to overcome the shortcomings that standard PSO traps into local optima easily and improve the convergence speed of algorithm, the concept of GA and Multi-thread technology are introduced. The experiment results show that the proposed parallel hybrid PSO algorithm(PHPSO) is relatively steady with faster convergent rate. Especially for multi-nodes, the efficiency is improved obviously. So the proposed PHPSO is well suited for large parking lot.

关键词： Sociology Statistics Particle swarm optimization Algorithm design and analysis Heuristic algorithms Convergence Vehicles

来源：评论

学校读者我要写书评

暂无评论

Modeling for user interaction by influence transfer effect in online social networks

Modeling for user interaction by influence transfer effect i...

引用

Conference on Local Computer networks (LCN)

作者： Qindong Sun Nan Wang Yadong Zhou Hanqin Wang Liansheng Sui Shaanxi Key Laboratory of Network Computing and Security Xi'an University of Technology Xi'an China MOE KLINNS Lab Xi'an Jiaotong University Xi'an China

User interaction is one of the most important features of online social networks, and is the basis of research of user behavior analysis, information spreading model, etc. However, existing approaches focus on the interactions between adjacent nodes, which do not fully take the interactions and relationship between local region users into consideration as well as the details of interaction process. In this paper, we find that there exists influence transfer effect in the process of user interactions, and present a regional user interaction model to analyze and understand interactions between users in a local region by influence transfer effect. Based on real data from Sina Weibo, we validate the effectiveness of our model by the experiments of user type classification, influential user identification and zombie user identification in online social networks. The experimental results show that our model present better performance than the PageRank based method and machine learning method.

关键词： Analytical models Twitter Data models Laboratories Educational institutions Learning systems

来源：评论

学校读者我要写书评

暂无评论

Energy saving model and simulation test based on 6LoWPAN wireless sensor network

引用

Open Automation and Control Systems Journal 2014年第1期6卷 1349-1358页

作者： Zhang, Yunyi Li, Yong Zhang, Ran Wei, Wei College of Computer and Communication Engineering Zhengzhou University of Light Industry Zhengzhou China School of Computer Science and Engineering Shaanxi Key Laboratory for Network Computing and Security Technology Xi’an University of Technology Xi’an China

This paper designs the mathematical model of fiber line power, optimization of wireless sensor network node and multi distributed IP, and uses C language to program the model, finally get a new energy-saving mechanism model of wireless sensor network. Combined with the distributed IPv6 technology and IEEE802.15.4 protocol, this paper designs a new 6LoWPAN wireless sensor network energy-saving mechanism, which realizes the seamless splicing energy-saving effect between wireless sensor network and the internet, and based on this develops Contiki integrated environment of wireless sensor network energy-saving test. Finally this paper uses Firefox browser with B/S architecture to test energysaving mechanism. Through the test we found that between two nodes of wireless sensor network, they can effectively realize sending and receiving of UDP data, and through IPv6 gateway it can connect with internet, and complete collection and transmission of data. Through the simulation calculation of power consumption, in accepting, transmission and idle periods, the wireless sensor network can save energy effectively, which reduces the splicing cost of internet and wireless sensor network. It provides the technical reference for the design of wireless sensor network. © Zhang et al.

关键词： Sensor nodes

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：