Attack and evaluation analysis on audio watermarking

Because of decline in human theft, error, fraud and also misusing the computer properties, the approach of value focused thinking needs to be established. A powerful IS or information system is not able to be developed just according to its technical abilities. This project concentrates on bringing a lot of reliable security system of IS and recognizing the core parts by means of value focused thinking method. Mean and fundamental goals are the outcomes of this method in which the core objectives all have some general usage for decision making in planning of security. The basic objectives have a tight relation with acknowledged aims of the information system security for instance confidentiality and integrity and the mean goals are generally about social challenges for example being responsible for using the sources effectively. In this project, value focused was used in order to develop the current model of the scope. In this regard 6 individual experts were asked to participate and by asking them some questions, fundamental objectives of the organization extracted. Then a new model was presented and this model before being distributed among the staff as a questionnaire was shown to 6 experts and they confirmed it. After their confirmation, this new model was tested by means of questionnaire and the results were analyzed by using the SPSS software

Audio content security: attack analysis on audio watermarking

xi, 54 p. ; 23 cm

Transmission of data with orthogonal frequency division multiplexing technique for communication networks using GHz frequency band soliton carrier

Microring resonators (MRRs) can be used to generate optical millimetre-wave solitons with a broadband frequency of 40-60 GHz. Non-linear light behaviours within MRRs, such as chaotic signals, can be used to generate logic codes (digital codes). The soliton signals can be multiplexed and modulated with the logic codes using an orthogonal frequency division multiplexing (OFDM) technique to transmit the data via a network system. OFDM uses overlapping subcarriers without causing inter-carrier interference. It provides both a high data rate and symbol duration using frequency division multiplexing over multiple subcarriers within one channel. The results show that MRRs support both single-carrier and multi-carrier optical soliton pulses, which can be used in an OFDM based on whether fast Fourier transform or discrete wavelet transform transmission/receiver system. Localised ultra-short soliton pulses within frequencies of 50 and 52 GHz can be seen at the throughput port of the panda system with respect to full-width at half-maximum (FWHM) and free spectrum range of 5 MHz and 2 GHz, respectively. The soliton pulses with FWHMs of 10 MHz could be generated at the drop port. Therefore, transmission of data information can be performed via a communication network using soliton pulse carriers and an OFDM technique