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Advances in digital video transmission have increased in the past few years. Security and privacy issues of the transmitted data have become an important concern in multimedia technology. Digital video stream is quite different from traditional textual data because interframe dependencies exist in digital video. Special digital video encryption algorithms are required because of their special characteristics, such as coding structure, large amount of data and real-time constraints. This paper presents a real-time partial encryption to digital video technique depends on Dynamic Dual Key Encryption Algorithm Based on joint Galois Fields which is fast enough to meet the real-time requirements with high level of security. In this technique the I-frame (Intra-frame) of the digital video scene is extracted and decomposed the color picture into its three color channels: luma channel (Y) and two chrominance channels Cb and Cr, with note that the frames of digital video is in YCbCr color system, the Dynamic Dual Key Encryption Algorithm Based on joint Galois Fields is applied to the Y channel. The encryption technique achieves best timing results, and it provides high level of security by its great resistant against brute force attacks.
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Advances in digital video transmission have increased in the past few years. Security and privacy issues of the transmitted data have become an important concern in multimedia technology. Digital video stream is quite different from traditional textual data because interframe dependencies exist in digital video. Special digital video encryption algorithms are required because of their special characteristics, such as coding structure, large amount of data and real-time constraints. This paper presents a real-time partial encryption to digital video technique depends on Dynamic Dual Key Encryption Algorithm Based on joint Galois Fields which is fast enough to meet the real-time requirements with high level of security. In this technique the I-frame (Intra-frame) of the digital video scene is extracted and decomposed the color picture into its three color channels: luma channel (Y) and two chrominance channels Cb and Cr, with note that the frames of digital video is in YCbCr color system, the Dynamic Dual Key Encryption Algorithm Based on joint Galois Fields is applied to the Y channel. The encryption technique achieves best timing results, and it provides high level of security by its great resistant against brute force attacks.
The purpose of this study is to investigate the effects on students’ academic success of a visual didactic material developed in a computing environment which is believed it will enlighten the sudents during the process of completing the project and the explanation of “the Lighting Technique and Internal Installation Project” course that is taught in the curriculum of the electrical and electronic parts from institutions who are given formal and widely education such as Technical Education and Engineering Faculties, Vocational Colleges, Public Education Centers, Indrustrial Vocational High schools which are the bakcbone of vocational and technical education. In addition, the use of the educational software as in this area as a didactic material that is developed for the mentioned course is determined as a subsequent goal. To test the effectiveness of the developed educational software in the learning process there are two measurement tools for the cognitive dimension developed according experts and accordant findings of these measurement tools the effectiveness is examined.
This paper present a state of art about biometric hand, different techniques used.Biometric is essentially used to avoid risks of password easy to find or Stoll; with as slogan save Time and Attendance. We can note that biometrics is a true alternative to the passwords and other identifiers to make safe the access controls. It makes it possible to check that the user is well the person who it claims to be.
This paper present a state of art about biometric hand, different techniques used.Biometric is essentially used to avoid risks of password easy to find or Stoll; with as slogan save Time and Attendance. We can note that biometrics is a true alternative to the passwords and other identifiers to make safe the access controls. It makes it possible to check that the user is well the person who it claims to be.
Standard cell placement is a NP complete open problem. The main objectives of a placement algorithm are to minimize chip area and the total wire length of all the nets. Due to interconnect dominance, Deep Sub Micron VLSI design flow does not converge leading to iterations between synthesis and layout steps. We present a new heuristic placement algorithm called Sankeerna, which tightly couples synthesis and routing and produces compact routable designs with minimum area and delay. We tested Sankeerna on several benchmarks using 0.13 micron, 8 metal layer, standard cell technology library. There is an average improvement of 46.2% in delay, 8.8% in area and 114.4% in wire length when compared to existing placement algorithms. In this paper, we described the design and implementation of Sankeerna algorithm and its performance is illustrated through a worked out example.
A new conceptual methodology and some methods are used to predict failures that could potentially occur in Proton Exchange Membrane Fuel Cell (PEMFC) systems. The combination methods for prediction durability and safety for fuel cell design starting with matrices of technological process, function, components and requirements for PEM fuel cell systems. After input with characteristic date are applied adequate some methods like Failure Modes and Effects Analysis (FMEA), fuzzy method and Fault Tree Analysis (FTA) for prognostic and analysis failure for PEMFC system or/and components, like product or/and process. For application and solving objectives according to the methodology proposed, as a case study to consider the methods specified for fault prediction in a PEM fuel cell type, based on analysis of process parameters like pressure flow of hydrogen and oxygen (or air), electric voltage, electric current and the humidification of the proton exchange membrane. These variables determining the functioning of the fuel cell are adequately analyzed with Fuzzy Fault Tree method (FFT). Methodology algorithm is solved using LabVIEW software provided by the National Instruments. The proposed methodology is validated by specified references from scientific literature under experimental and modelling appearance.
A new conceptual methodology and some methods are used to predict failures that could potentially occur in Proton Exchange Membrane Fuel Cell (PEMFC) systems. The combination methods for prediction durability and safety for fuel cell design starting with matrices of technological process, function, components and requirements for PEM fuel cell systems. After input with characteristic date are applied adequate some methods like Failure Modes and Effects Analysis (FMEA), fuzzy method and Fault Tree Analysis (FTA) for prognostic and analysis failure for PEMFC system or/and components, like product or/and process. For application and solving objectives according to the methodology proposed, as a case study to consider the methods specified for fault prediction in a PEM fuel cell type, based on analysis of process parameters like pressure flow of hydrogen and oxygen (or air), electric voltage, electric current and the humidification of the proton exchange membrane. These variables determining the functioning of the fuel cell are adequately analyzed with Fuzzy Fault Tree method (FFT). Methodology algorithm is solved using LabVIEW software provided by the National Instruments. The proposed methodology is validated by specified references from scientific literature under experimental and modelling appearance.
It is a matter of great pleasure to inform you that IJAET has launched its Volume 3 Issue 1 successfully on 1st March,2012.
All the papers are available in the Archives section of the website and are free for referencing and downloading. We will look that each
paper will get indexing as much as possible.
On the behalf of whole team of IJAET I would like to thanks our authors for their quick responses to make the issue launched on due date.
Volume 4 Issue 1 to be published on July 1, 2012
