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The nanosized-Li 4 Ti 5 O 12 with excellent high-rate performance and cyclic stability is synthesized using a spontaneous solid–liquid mixing process by introducing low-temperature eutectic mixture of LiOH·H 2 O and LiNO 3 . The intimate solid–liquid mixing and the adhesion or infiltration of the following produced Li 2 O to the surfaces of TiO 2...
With the development of database system and network system, the data sharing of Database System becomes more and more important. To enhance the efficiency of managing the data on Network and insure the sharing property and correct, many types of distributed database system has been designed and developed. Through the anatomy of distributed mechanism and distributed object, applying the distributed...
This paper presents a dynamic security access control model based on improved LSM, it can choice the different security strategy dynamically, according to the different security level of system. The experimental results show that in the dynamic security access control model, the main strategy module can support the multi-strategy combination dynamically, reduce the workload of those affiliate modules...
This paper proposes an audio zero-watermarking algorithm based on Fast Fourier Transform (FFT). This algorithm does not change any contents about the audio signals. It proposes a solution about the contradictions about imperceptible and robustness. The experimental results show this algorithm can effectively resist low-pass filtering, Gaussian noise and re-sampling attacks. This new audio zero-watermarking...
This paper proposes an audio watermark embedding and extraction algorithm based on fast Fourier transform (FFT). This algorithm makes full use of human auditory system (HAS) characteristic, embeds watermarking information into the phase coefficient of audio signal after FFT. The experimental results show that the audio watermarking generated with the proposed algorithm are inaudible and robust characteristics...
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