Information security is the crucial factor in data storage and transmission. Cryptography acts as a major element to ensure confidentiality in communication and information technology, where encryption and decryption schemes can be applied to scramble the pure plaintext and descramble the secret ciphertext using security keys. Both deterministic encryption in spatial domain and chaotic encryption in frequency domain are conducted and analyzed in context, as well as the information integrity after decryption. Comparisons on merits and drawbacks of two practical encryption schemes on secure transmission of digital information are made, where case studies on true color image encryption are presented for comparative purposes.
This paper presents an intelligent tool to summarize Arabic articles and translate the summary to Arabic sign language based on avatar technology. This tool was designed for improving web accessibility and help deaf people for acquiring more benefits. Of the most important problems in this task, is that the deaf people were facing many difficulties in reading online articles because of their limited reading skills. To solve this problem the proposed tool includes a summarizer that summaries the articles, so deaf people will read the summary instead of reading the whole article .Also the tool use avatar technology to translate the summary to sing language.
The aim of this work is to model and control anonlinear biological process. The paper illustrates theuse of fuzzy logic type Takagi-Sugeno (TS) to elaboratea fuzzy model and build fuzzy controllers.Twocontrol approaches are considered. The first is theparallel distributed compensation (PDC) control withrespect constraints on the manipulated inputs. Thesecond is the optimal linear quadratic integral control(LQI). The efficiency of both the modelling andthe control are demonstrated via simulations.
This paper present a modelling approach of abioprocess based on a Takagi-Sugeno formulation (TS).Usingthe resulted TS model, we construct a Parallel DistributedCompensation control law (PDC) to ensure the convergence ofthe state to a specific equilibrium points. The performance of
this approach is illustrated by means of a simple example of abiomass growth process.
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