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Wei X.,Mianyang Vocational and Technical College | Li Y.,State Grid Corporation of China
World Information on Earthquake Engineering | Year: 2014

In this study and the evaluation of seismic performance of hydraulic structures, artificial seismic waves is a common input loads. This paper establishes ground motion and stochastic mathematical models, determined the basic parameters in white noise stationary process, established a relationship between design response spectrum and the power spectrum, power spectrum and amplitude spectrum, established a spectral curve by regarding random phase angle and intensity of the envelope as a parameter, using MATLAB to compile corresponding programs, with FFT transform and FFT inverse transformation to establish the relationship between the time domain and frequency domain, debugged the error gap between computing response spectrum and the design response spectrum, achieved the purpose of generating artificial ground motion, to eliminate the impact of the residual long-period component in the artificial wave, this paper use the least squares method fitting of the original average acceleration, average acceleration was used the correction of artificially vibration acceleration, corrected the drift of displacement time history. Finally to created artificially vibration as the input, calculated to a dynamic response of the engineering structure, In order to provide a meaningful reference, in basis of the seismic design of engineering. ©, 2014, Science and Technology Periodical Press. All right reserved. Source

Luo T.,Mianyang Vocational and Technical College
Applied Mechanics and Materials | Year: 2014

The mechanical behavior of RC beam strengthened with CFRP by anti-arch method and directly pasting CFRP through model test is analyzed. It explains that the reinforced RC beam with CFRP by anti-arch method can solve the influence of beam's loading by the secondary stress which exists in the method of pasting CFRP directly in strengthening RC beams improve the beam's load when it cracks and the carrying capacity, and decrease the deflection deformation and crack width and gap when the beam carries load. It can make the most use of high strength of tensile properties of CFRP. © (2014) Trans Tech Publications, Switzerland. Source

Luo T.,Mianyang Vocational and Technical College
Applied Mechanics and Materials | Year: 2014

In order to study the flexural capacity of the seismic damaged RC beams after reinforcement, the bearing capacity and ductility are comprehensively evaluated, which is based on the results of three points of division loading test on 8 models which are divided into 4 groups. Experimental results show that compared with the direct pasting CFRP, the ultimate bearing capacity of RC beam strengthened by composite CFRP sheets is much higher, the average is 20.7%. Cracking load and ductility are also improved higher. The reinforcement effect of CFRP sheets is used very well. The research results provide advice and reference for the next seismic damaged RC beams in the reinforcement engineering. © (2014) Trans Tech Publications, Switzerland. Source

Wang T.,Mianyang Vocational and Technical College
Proceedings - 2014 IEEE Workshop on Advanced Research and Technology in Industry Applications, WARTIA 2014 | Year: 2014

With the development of economy and the accelerating rhythm of life, pressure of work and competition is becoming bigger and bigger. Traveling outside is an effective way to relax and plays a more and more important role in people's lives. Tourism service supply chain is built to meet the needs of tourists. The supply chain structure includes food, accommodation, travel, tour, shopping, entertainment companies (travel services provider), multilevel travel agencies (travel service integrators) and tourists. Due to the tourism product is not the physical product, compared to the traditional physical supply chain, tourism supply chain has many unique characteristics. On the basis of the analysis of tourism supply chain structure and characteristics of tourism products, selection problem of tourism products from the perspective of tourists' utility is studied, providing decision-making basis for the travel agency. © 2014 IEEE. Source

Xiao Y.,Southwest University of Science and Technology | Xiao Y.,Mianyang Vocational and Technical College
Lecture Notes in Electrical Engineering | Year: 2014

Image splicing is a common method to construct forged image which decreases the authentication of the traditional image. Resizing operation is usually necessary to create a convinced forged image. Though the forged image leaves no visual clues, resizing operation using interpolation method destroys the relationship between neighboring pixels, thus leaving traces which can be captured by statistical feature. We first convert the traces left by resizing to feature and then feed features from enough sample images to support vector machines to train for detector. Finally, we use detector to determine whether the image is tampered and point out which parts of the image are tampered by block-wise method. Experimental results verify the effectiveness of our proposed method. © 2014 Springer International Publishing Switzerland. Source

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