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2013 International Conference on Advanced computer Science and Electronics Information(ICACSEI 2013)

作者： Ma Rui Cheng Yaping Gu Yunhua Jiangsu Engineering Center of Network Monitoring Nanjing University of Information Science & Technology Computer and Software Institute Nanjing University of Information Science & Technology

For finding precise segmentation, a new approach to remove and amend stroke connecting touching handwriting digits based on touching pattern is presented. Firstly, background region of touching digits is analyzed by using water reservoirs concept, and then the classification scheme is developed to identify the pattern of touching digits according to the structural features. In single-point touching type, two touching pairs of digits can be connected with a ligature, which can be a component of one of the digits or belong to no digit. After segmentation is performed to get isolated digits. the pattern-oriented ligature analysis investigates whether candidate ligature is a part of digit or a useless stroke and decides to be preserved or be removed. Experimental results show that the proposed approach is effective for segmentation of handwritten touching digits and segmentation errors have been reduced.

关键词： Water reservoirs, handwritten digits segmentation, remove stroke

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Bacthing auditing of data in multicloud storage

International Journal of Database Theory and Application

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International Journal of Database Theory and Application 2014年第6期7卷 139-150页

作者： Xia, Zhihua Wang, Xinhui Sun, Xingming Zhu, Yafeng Ji, Peng Wang, Jin Jiangsu Engineering Center of Network Monitoring Nanjing University of Information Science and Technology Nanjing China School of Computer and Software Nanjing University of Information Science and Technology Nanjing China

Cloud storage enables users to outsource their data to cloud servers and enjoy the on-demand services. However, this new paradigm also introduces integrity threats toward user' outsourced data. This paper develops an efficient auditing mechanism, which support batch auditing for multiple data files in multi-cloud environment. By constructing a sequence-enforced Merkle Hash Tree, the proposed protocol can resist the replace attack. By using the bilinear map, the proposed protocol achieves stateless and transparent verification. By putting the computation of intermediate values of the verification on cloud servers, our method can greatly reduce the computing burden of the auditor. The performance analysis proves the good efficiency of the proposed protocol.

关键词： Cloud storage

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Security data auditing based on multifunction digital watermark for multimedia file in cloud storage

International Journal of Multimedia and Ubiquitous Engineeri...

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International Journal of Multimedia and Ubiquitous engineering 2014年第9期9卷 231-240页

作者： Ren, Yongjun Shen, Jian Wang, Jin Xu, Jiang Fang, Liming Jiangsu Engineering Center of Network Monitoring Nanjing University of Information Science and Technology Nanjing China School of Computer and Software Nanjing University of Information Science and Technology Nanjing China College of Computer Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing China

Cloud computing is a promising computing model that enables convenient and on-demand network access to a shared pool of configurable computing resources. In cloud computing, data owners host their data on cloud servers and data consumers can access the data from cloud servers. This new paradigm of data storage service also introduces new security challenges, because data owners and data servers have different identities and different business interests. Therefore, an independent auditing service is required to make sure that the data is correctly hosted in the Cloud. However, the existing solutions are not specific to the multimedia data. Moreover copyright protection is not provided. In this paper, we define specially a provable data possession model for multimedia file, and present a framework based on digital watermarking for multimedia data storages audit service, in which we analyze the security features of audit service for multimedia data outsourcing and the corresponding properties of digital watermarking. Moreover as an example, we present a provable data possession scheme based on double function self-embedded digital watermark, which integrate image content audit service and copyright protection. © 2014 SERSC.

关键词： Cloud storage

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A novel text copy detection method based on semantic feature

International Journal of Database Theory and Application

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International Journal of Database Theory and Application 2014年第5期7卷 161-170页

作者： Zhang, Jianjun Sun, Xingming Wang, Jin School of Information Science and Engineering Hunan University Changsha China College of Engineering and Design Hunan Normal University Changsha China School of Computer and Software and Jiangsu Engineering Center of Network Monitoring Nanjing University of Information Science and Technology Nanjing China

With the rapid development of the Internet, getting shared resource on the network is becoming more easy, and various plagiarize is becoming to breed, so the research of text copy detection technology is becoming more important. The traditional copy detection technology is based on term frequency statistics, and does not consider the context semantic. Some plagiarism can be easily made by replacing synonyms, changing the sentence structure, or translating from one language to another language. But the traditional copy detection technology could not detect such plagiarism. In this paper, a text copy detection method based on semantic is proposed. By using an improved TFIDF algorithm, terms could be more accurately extracted from each document in the corpus. By putting the documents corresponding to the terms one by one, a terms category is built in the database. When a document is detecting, the terms are read from the database and matched. The testing results show that, compared to the traditional TFIDF algorithm, the improved method could more accurately detect the plagiarism.

关键词： Semantics

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Research and development of mobile application for android platform

International Journal of Multimedia and Ubiquitous Engineeri...

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International Journal of Multimedia and Ubiquitous engineering 2014年第4期9卷 187-198页

作者： Ma, Li Gu, Lei Wang, Jin Jiangsu Engineering Center of Network Monitoring Nanjing University of Information Science and Technology Nanjing 210044 China School of Computer and Software Nanjing University of Information Science and Technology Nanjing 210044 China Key Laboratory of Meteorological Disaster Ministry of Education Nanjing University of Information Science and Technology Nanjing 210044 China

Today, as the developing of hardware of mobile is getting better, the performance index is much higher than the actual requirements of the software configuration. Phone's features more depend on software. As the Android operating system is getting more popular, the application based on Android SDK attracts much more attention. But now, some of the Android application interface is too cumbersome, pop-up ads is overmuch and the function is too single, these cause some inconvenience to the users. This article presents the application by eliminating the redundancy. Three kinds of applications are developed base on Java and Android SDK --- Weibo client, video player and audio player. The audio player uses the ContentResolver and Curor to obtain music files and plays the music by using the Service Components to call the Media Player class in the background. The video player uses the Media Player class provided by Android SDK. This class loads the file through URL, realize the multimedia file parsing by calling the Open Core Library, which is at the bottom of Android, through JNI and by calling the Surface Flinger interface to realize the video files' playback. The users' data is collected through the Sina open platform called by Sina client and the data will be returned under the format of JSON by the Sina server. The system uses the OAuth authentication method for user authorization to complete the login process. The specific functions of this system are developed based on Android Weibo SDK. The interfaces of these Android apps are pretty and the operation is smooth. What's more, the cumbersome interface and excessive advertising are eliminated, so that users are able to manipulate these apps more conveniently and smoothly. © 2014 SERSC.

关键词： Android (operating system)

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CIRM: A candidate item reduce method on mapreduce for meteorological big data application

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Energy Education Science and Technology Part A: Energy Science and Research 2014年第6期32卷 6209-6220页

作者： Xue, Shengjun Huang, Junsheng Xu, Xiaolong Zhang, Jie Jing, Lu Nanjing University of Information Science and Technology School of Computer and Software Nanjing China Nanjing University of Information Science and Technology Jiangsu Engineering Center of Network Monitoring Nanjing China Nanjing University State Key Laboratory for Novel Software Technology Nanjing China Nanjing University Department of Computer Science and Technology Nanjing China Shanghai Meteorological Information and Technical Support Centre Shanghai China Computer Science Department Oklahoma State University StillwaterOK United States

With the increase of the number of meteorological stations, the meteorological data is growing rapidly. Association analysis algorithm is widely applied to the analysis of meteorological data. The traditional association analysis algorithm is difficult to meet the needs of meteorological big data processing. In order to solve this problem, in this paper, we propose a candidate item reduce method named CIRM. It aims at reducing the times of searching data sets and the number of generating candidate sets. To improve its scalability and efficiency in big data environment, CIRM is implemented on Hadoop, a widely-adopted distributed computing platform using the MapReduce parallel processing paradigm. Finally, extensive experiments are conducted on meteorological data sets, and results demonstrate that CIRM significantly improves the efficiency and scalability of the Meteorological analysis data over existing approaches. © Sila Science. All rights reserved.

关键词： MapReduce

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A study of agricultural meteorological monitoring system based on wireless sensor networks

International Journal of Multimedia and Ubiquitous Engineeri...

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International Journal of Multimedia and Ubiquitous engineering 2014年第7期9卷 15-26页

作者： Ma, Li Yan, Jingzhou Yan, Shuangshuang Wang, Baowei Liao, Kuo Wang, Jin Jiangsu Engineering Center of Network Monitoring Nanjing University of Information Science and Technology Nanjing 210044 China School of Computer and Software Nanjing University of Information Science and Technology Nanjing 210044 China Key Laboratory of Meteorological Disaster of Ministry of Education Nanjing University of Information Science and Technology Nanjing 210044 China Ningde Meteorological Bureau Ningde 352100 China

In order to keep the sustainable development of agricultural industry, monitoring the four basic essential elements' changes, which are temperature, humidity, light intensity, carbon dioxide, and applying the corresponding solution is really necessary. An agriculture meteorological monitoring system with ZigBee wireless sensor networks (WSNs)and wireless communication technology is designed in this paper. Sensor nodes are distributed in the measurement area and form a self-organizing network. The sink collects information which transmitted from sensor nodes and then, sends the information to the server. Server will summarize the information, then taking analysis and processing. At the end, the server will give some corresponding warningand forecast. The cost of this system is low and could improve the accuracy and timeliness in agricultural meteorological monitoring. © 2014 SERSC.

关键词： Zigbee

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An enhanced routing algorithm for congestion control in a home energy management system

An enhanced routing algorithm for congestion control in a ho...

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2013 IEEE 2nd Global Conference on Consumer Electronics, GCCE 2013

作者： Liu, Qi Qian, Hong Wei Wang, Bao Wei Shen, Jian Linge, Nigel Jiangsu Engineering Centre of Network Monitoring School of Computer and Software Nanjing University of Information Science and Technology Nanjing China School of Computing Science and Engineering University of Salford Salford United Kingdom

ISBN: (纸本)9781479908929

Wireless communication is well used in home energy management systems (HEMS). ZigBee, as a typical example helps to achieve cheap and fast deployment, but also brings resource limits and performance issues. An enhanced routing algorithm is therefore present in this paper to improve congestion detection and avoidance. Better performance has been achieved According to the experiments conducted in a practical environment. © 2013 IEEE.

关键词： Routing algorithms

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A secure text steganography based on synonym substitution

A secure text steganography based on synonym substitution

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2013 IEEE Conference Anthology, ANTHOLOGY 2013

作者： Qi, Cao Sun, Xingming Xiang, Lingyun Jiangsu Engineering Center of Network Monitoring Nanjing University of Information Science and Technology China School of Computer and Communication Hunan University Hunan 410082 China

ISBN: (纸本)9781479916603

In text steganography based on synonym substitution, the synonym number in synonym set is not always some powers of 2. In traditional methods, the redundant synonyms are always abandoned. Two different coding schedules, which made full use of the abandoned synonym to improve the security of the steganographic system, are proposed in this paper. The synonyms in a synonym set are dynamically divided into coded words and backup words. One method divides the cover text into blocks to hide the secret information for the first time and then uses a highly efficient coding schedule to embed the secret information for the second and third time. The other method employs the backup words to prevent the increase the number of synonym pairs, keeping the statistical characteristics of synonym pairs unchanged. © 2013 IEEE.

关键词： Semantics

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Ground nephogram classification based on Gabor wavelet and SVM

Ground nephogram classification based on Gabor wavelet and S...

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2nd International Conference on Information engineering and Applications, IEA 2012

作者： Li, Hanguang Wang, Qi Jiangsu Engineering Center of Network Monitoring Nanjing University of Information Science and Technology Nanjing 210044 China College of Computer and Software Nanjing University of Information Science and Technology Nanjing 210044 China

ISBN: (纸本)9781447148555

Techniques called feature extraction and pattern recognition are implemented for nephogram representation and recognition. In this approach, the Gabor wavelets are used to extract features of ground nephograms. The principal component analysis (PCA) is applied on the Gabor transformed matrices to reduce the dimensions of these features. Finally by using these features, we can train support vector machine (SVM) classifiers for classifying cloud types. After finishing training, we can use these trained SVM classifiers to classify these cloud types. During these experiments, we used different Kernels and parameters for comparison. Experiment results indicated that the solution proposed in this paper was able to get a good accurate rate which was higher than the solution using Haar-like features and AdaBoost algorithm. © 2013 Springer-Verlag.

关键词： Principal component analysis

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