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We propose a network attack detection method based on multi-layer weighted clustering in this paper. The average value of weighted of each attack is set and heterogeneous multi-layer attack is mixed together effectively by calculating the average value of multi-layer clustering weighted. The problem that the detection is not accurate caused by the inconsistent detection result of multi-layer attack is resolved. The experiment shows that the multi-layer attack can be mixed together effectively to ensure the security of the network and the satisfactory result is obtained. [ABSTRACT FROM AUTHOR]

To improve the face recognition rate of two dimension principal component analysis (2DPCA), a modified method of 2DPCA based on modular images is proposed. In this paper, the weights function is introduced to define the total scatter matrix according to the distances between the within-class images and the average of the within-class images. We apply it into the modular images. The improved 2DPCA is used to extract feature in the training sample sub-images for pattern classification. Results of the experiments based on ORL face database show that it can effectively improve the rate of face recognition. [ABSTRACT FROM AUTHOR]

A robust-fragile dual watermarking algorithm for digital image based on DWT and SVD is proposed in this paper. Firstly, to embed the robust watermark, we adopt the quantization method to embed one binary watermark image into the host image using the technology of wavelet transform and singular value decomposition, and the robust watermark can be extracted without the host image. Then, the fragile watermark is further embedded into LSB of the above watermarked image to reduce the fragile watermark' s influence towards robustness. The experimental results show that the robust watermark has great robustness for different kinds of attacks, and the fragile watermark is sensitive to tamper and has good accuracy of tamper localization. Therefore, the combination of the two watermarks achieves a double protection for the host image. [ABSTRACT FROM AUTHOR]

In mobile internet era, three-dimensional color code has becoming the new trend of the code for its technological superiority, however, its copyright protection has arised. In this paper, combined with singular value decomposition (SVD) , a robust algorithm based on Contourlet transform is proposed. After performing the Contourlet transform on the green channel, approximation sub-band of host image is performed SVD to emb the watermark. The experimental results show that the proposed algorithm is robust and invisible and the watermarking can be extracted with small watermark embedding strength which can protect the copyright effectively. The algorithm is robust against common processing such as JPEG compression, noise, filtering, rotating and cropping. [ABSTRACT FROM AUTHOR]

In this paper, the principle of melted extrusion manufacturing was described. Basic process and choosing principle on the accumulated direction of complex product were discussed. On this basis, processing parameters were set up and complex product was made successfully. [ABSTRACT FROM AUTHOR]

In this paper, two evaluation models of fuzzy theory are studied by the application of fuzzy theory in the comprehensive quality of university teachers. According to the results of the relative experiment, it proves that the application of fuzzy theory can more effectively solve many problems like how to identify, analyze and process the problems of engineering technology and how to analyze and test the problems on education , society and human science, which are hard to be solved in traditional ways. [ABSTRACT FROM AUTHOR]

The paper introduces the design of the mechanism dynamic simulation based on Pro/Engineer software. Then the methods and the proper steps are given with an example of the four-bar mechanism. [ABSTRACT FROM AUTHOR]