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International Conference on Natural Computation (ICNC)

作者： Yun-yun Du Hong-yun Ning Ping Yang Yan-xia Cui Key Laboratory of Computer Vision and System Tianjin University of Technology Tianjin China

ISBN: (纸本)9781479951529

We begin with overviews of the existing defects of the current Kerberos protocol and the shortage of the current improvement, and then we focus on the new method of the dynamic password and public key. On the basis of the original Kerberos protocol, firstly, we propose the usage of the Diffie-Hellman algorithm, and put the password in the token, then take the key which has added the dynamic factor as the sharing key between Client and AS, this improvement can fundamentally solve the password guessing attack. Secondly, we use the method of the ElGamal algorithm. For one thing, it will generate a new public key in each authentication, and put the new public key as the secret key of the information transmission between client and resource server, this method basically guarantees security of the information transmission; For another we use the random number, which is associated with the public key, to take the place of the time-stamp to prevent replay attack, it puts the random number and our key together to increase the ability of preventing replay attack. Finally, we analyze the example of the improvement which has been carried out. And the results show that the improved Kerberos protocol can ensure the security of the information and password.

关键词： Public key Protocols Servers Heuristic algorithms Authentication

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Determination of Price and Warranty Length in Supply Chain

Determination of Price and Warranty Length in Supply Chain

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Workshop on Intelligent Information Technology Application

作者： Yang Peng Junqing Sun Key Laboratory of Computer Vision and System Tianjin University of Technology Tianjin China

To stimulate consumers' purchase willingness, producers must determine the reasonable selling prices and warranty length for their product. Based on the diffusion mode, a dynamic Stacklberg game of price and warranty was researched in this paper. Through this model, we got some conclusion about the supplier and retailer's optimal strategy.

关键词： Warranties Supply chains Laboratories Costs computer vision Educational technology computer science education Marketing and sales Virtual manufacturing Information technology

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A pervasive service discovery strategy based on peer to peer model

A pervasive service discovery strategy based on peer to peer...

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作者： Zhang, De-Gan Chen, Xu-Yan Li, Chao Li, Lin-Qing Tianjin Key Lab of Intelligent Computing and Novel Software Technology Tianjin University of Technology 300191 China Key Laboratory of Computer Vision and System Ministry of Education Tianjin University of Technology 300191 China

ISBN: (纸本)9780955529337

In order to improve the efficiency of service discovery in the pervasive environment, this paper presents a new strategy of service discovery based on p2p network model. Reference the ring topology of chord algorithm and tbe algorithm used by DDT, tbe traditional single finger-table witch be maintained by each node in the ring will be changed into double finger-table: the Neigbbor-Finger-Table and Long-distance Finger-Table. The structure of the Neighbor-Finger-Table is the same as the traditional single finger-table's. The Long-distance Finger-Table can construct small-world network. Some similar algorithm uses random method to select remote access node, the new strategy is different from that, tbrough tbe calculation of the local node, it can ensure the scope of service can cover tbe entire network. The simulation shows the algorithm can effectively reduce the path length of service discovery, improve the service success rate, and control the path length of magnitude.

关键词： Small-world networks

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A new method for image fusion based on fuzzy neural network

A new method for image fusion based on fuzzy neural network

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作者： Zhang, De-Gan Wang, Yuan-Yuan Liu, Wei-Wei Zhang, Xiao-Li Tianjin Key Lab of Intelligent Computing and Novel Software Technology Tianjin University of Technology 300191 China Key Laboratory of Computer Vision and System Ministry of Education Tianjin University of Technology 300191 China

ISBN: (纸本)9780955529337

In pervasive computing paradigm, the image data obtained by a variety of multimedia, information equipment. In order to make use of these information reasonably and efficiently, a new method for image fusion based on fuzzy neural network has presented in this paper. It can fuse massive data from the multi-sensor image. Here, fuzzy neural network is a paraDel information processing model, there are more adaptive and self-organization, and can accomplish the complexity of real-time computing and mass data retrieval, it demonstrate its unique superiority of image understanding, pattern recognition and the handling of incomplete information. The fuzzy neural network system developed by us can be used in multi- sensor image fusion. Based on our experiments, it has been proved that the fusion is fast, effective, and can meet the real-time requirements of pervasive computing.

关键词： Fuzzy neural networks

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On structural properties of large-scale software systems: From the perspective of complex networks

On structural properties of large-scale software systems: Fr...

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6th International Conference on Fuzzy systems and Knowledge Discovery, FSKD 2009

作者： Sun, Shiwen Xia, Chengyi Chen, Zhenhai Sun, Junqing Wang, Li Tianjin Key Laboratory of Intelligence Computing and Novel Software Technology Tianjin University of Technology Tianjin 300191 China PLA Troop 66366 Hebei 064100 China Key Laboratory of Computer Vision and System Ministry of Education Tianjin University of Technology Tianjin 300191 China

ISBN: (纸本)9780769537351

From the viewpoint of network, large-scale computer software systems can be regarded as complex networks composed of interacting units at different levels of granularity (such as functions, classes, packages, source files, etc.). In this paper, the collaboration relationships between header files in the source node of Linux kernels, which are representative examples of large-scale open-source software systems, are analyzed by constructing weighted network-Header File Collaboration Network (HFCN). Through using appropriate non-weighted and weighted quantities, the complex structural properties, the weight distribution and the impact between them of these networks are characterized and analyzed. These results can provide a better description of the organizational principles at the basis of the architecture of source codes in large computer software systems. © 2009 IEEE.

关键词： Complex networks

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A novel denoising method for infrared image based on bilateral filtering and non-local means

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Optoelectronics Letters 2017年第3期13卷 237-240页

作者：刘凤连孙梦尧蔡文娜 Key Laboratory of Computer Vision and System Ministry of Education of ChinaTianjin Key Laboratory of Intelligence Computing and Novel Software TechnologySchool of Computer and Communication EngineeringTianjin University of TechnologyTianjin 300384China

This paper presents an image denoising method based on bilateral filtering and non-local means. The non-local region texture or structure of the image has the characteristics of repetition, which can be used to effectively preserve the edge and detail of the image. And compared with classical methods, bilateral filtering method has a better performance in denosing for the reason that the weight includes the geometric closeness factor and the intensity similarity factor. We combine the geometric closeness factor with the weight of non-local means, and construct a new weight. Experimental results show that the modified algorithm can achieve better performance. And it can protect the image detail and structure information better.

关键词： bilateral filtering similarity pixel texture combine repetition neighborhood preserve noisy

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Cluster analysis of lung adenocarcinoma cells using PCA and confocal Raman spectroscopy 3

Cluster analysis of lung adenocarcinoma cells using PCA and ...

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3rd IEEE Advanced Information Management, Communicates, Electronic and Automation Control Conference, IMCEC 2019

作者： Yan, Jing Zhao, Meng Shi, Fan Wang, Zhe Yang, Yu Chen, Shengyong Tianjin University of Technology Key Laboratory of Computer Vision and System of Ministry of Education School of Computer Science and Engineering Tianjin300384 China Tianjin University of Technology School of Science Tianjin300384 China Tianjin Medical University School of Medical Laboratory Tianjin300203 China

ISBN: (纸本)9781728105130

This work analysis composition and structure of lung adenocarcinoma cells and normal cells based on confocal Raman spectroscopy. Firstly, confocal Raman spectra of 242 lung adenocarcinoma cells and 231 normal cells are obtained. In addition, Raman spectra are denoised and two evaluation criteria are used to evaluate the Raman spectra. Then, PCA is used to make principal component analysis of the spectrum and observe the process of spectral information changing with PCs. The best number of features is selected to prevent cross-sensitivity and obtain a better model. On this basis, a clustering model of PCA is constructed. The results show that accuracy of 84.57%, sensitivity of 88.02%, specificity of 80.95% and marshall correlation coefficient (MCC) of 69.21% are obtained. The results show that this method is effective in diagnosing cancer cells. Therefore, this model proves the potential of nondestructive detection of lung adenocarcinoma, and has a certain guiding role for the next classification and location. In addition, it can be easily applied in other fields in the future. © 2019 IEEE.

关键词： Raman scattering

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Design and realization of mobile government information services platform based on SMS

Design and realization of mobile government information serv...

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作者： Wang, Fayu Zhang, Hua Xu, Guangping Tianjin Key Laboratory of Intelligence Computing and Novel Software Technology Ministry of Education Tianjin University of Technology 300191 Tianjin China Key Laboratory of Computer Vision and System Ministry of Education Tianjin University of Technology 300191 Tianjin China

ISBN: (纸本)9788988678251

As the development of mobile communication technology becomes gradual mature, the short message service which sends messages from the information platform to the mobile phone users has been a method for the most users to obtain information timely and conveniently. This thesis collates the short message service system exploited for the mobile phone users and the service platform for the network users to elaborate the function of the platform and the system structure of the short message platform briefly, and state the key technology of its design and operation minutely. The short message platform is consisted of a web server based on the database, a sending server and interface server. This platform employs three-level control tactics, the user, role and administrator to regulate the user's authority and guarantee the security of the system. So the system has a certain referent value for the design of such kind of short message platform.

关键词： Cellular telephones

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Ontology-based description model of part information

Ontology-based description model of part information

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6th International Conference on Fuzzy systems and Knowledge Discovery, FSKD 2009

作者： Li, Wenjie Shen, Nan Tianjin Key Laboratory of Intelligence Computing and Novel Software Technology Tianjin University of Technology 300191 Tianjin China Key Laboratory of Computer Vision and System Tianjin University of Technology Ministry of Education 300191 Tianjin China Middle School of Nankai University 300071 Tianjin China

ISBN: (纸本)9780769537351

Considering existing four expressive styles of part information, the notion of ontology and its technologies are introduced to domain ontology repository of computer Aided Process Planning (CAPP) application system, in order that represents explicitly part information and relations between part features in the repository, and ontology-based description model of part information and three-layer framework of the model is presented, in which description pattern of part features and its structure is proposed. A typical example of part JieTiZhou indicates finally part information of the ontology repository can be expressed definitely by the ontologybased description model, and all kinds of relations among part features can be denoted effectively. © 2009 IEEE.

关键词： Ontology

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Segment-tree based cost aggregation for stereo matching with enhanced segmentation advantage

Segment-tree based cost aggregation for stereo matching with...

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IEEE International Conference on Acoustics, Speech and Signal Processing

作者： Peng Yao Hua Zhang Yanbing Xue Mian Zhou Guangping Xu Zan Gao Shengyong Chen Key Laboratory of Computer Vision and System (Ministry of Education) Tianjin University of Technology China

ISBN: (纸本)9781509041183

Segment-tree (ST) based cost aggregation algorithm for stereo matching successfully integrates the information of segmentation with non-local cost aggregation framework. The tree structure which is generated by the segmentation strategy directly determines the final results for this kind of algorithms. However, the original strategy performs unreasonable due to its coarse performance and ignores to meet the disparity consistency assumption. To improve these weaknesses we propose a novel segmentation algorithm for constructing a more faithful ST with enhanced segmentation advantage according to a robust initial over-segmentation. Then we implement non-local cost aggregation framework on this new ST structure and obtain improved disparity maps. Performance evaluations on all 31 Middlebury stereo pairs show that the proposed algorithm outperforms than other five state-of-the-art aggregated based algorithms and also keeps time efficiency.

关键词： Segment-tree stereo matching non-local aggregation segmentation advantage segmentation Segmentation Performance Evaluation time efficiency TREE STRUCTURES agglomeration based Stereo pairs

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