Mechanical and Electrical Technology IV

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Authors: Mahmoud A. Osman, Nasser H. Ali
Abstract: The process of hiding the information like text, binary image, audio etc. into another signal source like image, audio etc. is called watermarking. The approach involved in watermarking the binary image signal in the wavelet domain of the audio signal was implemented using MATLAB. In this paper, we propose a Discrete Wavelet Transform low frequency to high frequency. Besides, the high frequency spectrum is less sensitive to human ear. That is the reason why the high frequency component is usually discarded in the compression process. Therefore, information to be hidden can be embedded into the low frequency component to against the compression attack. The characteristic of this scheme is that the user can not only use the DAW to embed the text file in to the audio but also binary image. In this paper we embeds copyright information into audio files as a proof of their ownership, we propose an effective, robust, and an inaudible audio watermarking algorithm. The effectiveness of the algorithm has been brought by virtue of applying the discrete wavelets transform (DWT) . Experimental results will be presented in this paper to demonstrate the effectiveness of the proposed algorithm.
Authors: S. Danishkumar, R.S. Sanmathipriya
Abstract: The goal of Finger Print Based Attendance system is to take attendance of the student in a faster and efficient way. The attendance has been taken by calling out students name in the class which will be time consuming. After taking attendance the list will be sent to the department. Its ability is to uniquely identify each person based on their FINGER PRINT reader. In real time application capability of taking attendances will be more accurate by using Finger Print. Using an USB port or MAX 232 an attendance will be stored inside the database. Using an 8051 microcontroller data can be transferred to MAX 232.Thus the speed and security provided by Finger Print makes it valuable in the education field.
Authors: Samir El-Nakla
Abstract: Many current systems rely for their performance on achieving a balance between electronics, software and mechanical systems and the transfer of functionality between those domains. The design of such mechatronic systems therefore relies on the ability of the individual domain specialists to transfer knowledge about their domain within the overall design process. Enhancing the ability of non-specialists to understand the relationships between the various system elements and to communicate with the domain specialists will serve to enhance and support the design process. The paper therefore considers a tool based around the use of case-based expert system which is intended to provide such support by allowing a non-specialist to access information from a range of domains in a way which is easy to use and understand and which will establish and define the links between the various areas of technology.
Authors: Zamani Mazdak, Bt Abdul Manaf Azizah, M. Abdullah Shahidan, Shojae Chaeikar Saman
Abstract: A novel method to estimate PSNR of the result of audio steganography before embedding is presented. Estimated PSNR by proposed linear interpolation formula was tested and the result was almost the same with the obtained PSNR in practical way.
Authors: Cahyadi Adi Surjosatyo, Yulianto S. Nugroho
Abstract: Oxyfuel combustion is one of promising clean coal technologies for capturing CO2. Different environment in oxyfuel combustion between air condition and O2/CO2 condition is required to be studied. Thermo-gravimetric analyzer (TGA) and Fourier-transform infrared (FTIR) spectrometer was used to study the behavior of pulverized coal in different O2/CO2 environments. The burning process of pulverized coal in O2/CO2 environment was relative similar until burning the volatile matter and then combustion was delayed in burning the char compared with that in O2/N2 environment at the same oxygen concentration. In case of the oxygen concentration increase, the burning rate of coal increases and burnout time is shortened. The species in flue gas including H2O, CO2, CO, CH4, SO2 and NO during burning test in TGA were determined and analyzed using the Fourier-transform infrared (FTIR) spectrometer. Compared with pulverized coal combustion in O2/N2 condition, much more CO is produced in O2/CO2 coal combustion process.

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