Optimal Color Model for Information Hidingin Color Images

In present work the effort has been put in finding the most suitable color model for the application of information hiding in color images. We test the most commonly used color models; RGB, YIQ, YUV, YCbCr1 and YCbCr2. The same procedures of embedding, detection and evaluation were applied to find which color model is most appropriate for information hiding. The new in this work, we take into consideration the value of errors that generated during transformations among color models. The results show YUV and YIQ color models are the best for information hiding in color images

Designing Novel Nanostructured Permanent Magnets

Rare earth element based alloys have been the source of high performance magnetic alloys, and have played a paramount role in the development of various technologies, including: memory devices (such as credit cards, random-access memory), sensors, and various biomedical applications. However, there is a tremendous need to replace rare earth metals with material with powerful magnetic properties. Our group recently found CrTe-based materials that show very promising magnetic properties in nanostructured form. The magnetic modeling of such material in nanostructured form prior to their fabrication demonstrates their magnetic properties in bulk form. In this project, we investigate the behavior of bulk material made out of nanomagnets to predict the magnetic properties using Object Oriented Micromagnetic Framework, which will help screening candidate materials prior to their fabrication. We model a single spherical bulk nanomagnet and a touching bi-layer system with intergranular exchange. We then obtain coercivity as a function of anisotropy constant, and coercivity as a function of intergranular exchange. We show in the case of a single sphere, that coercivity increases when increasing anisotropy, and that small coercivity corresponds to small anisotropy and vortex switching. We further show that in bulk assembled material coercivity increases when increasing anisotropy as well as increasing intergranular exchange energy in the bi-layer system made of granular media

Tamper Detection in Color Image

In this work a fragile watermarking scheme is presented. This scheme is applied to digital color images in spatial domain. The image is divided into blocks, and each block has its authentication mark embedded in it, we would be able to insure which parts of the image are authentic and which parts have been modified. This authentication carries out without need to exist the original image. The results show the quality of the watermarked image is remaining very good and the watermark survived some type of unintended modification such as familiar compression software like WINRAR and ZI

Tamper Detection in Text Document

Although text document images authentication is difficult due to the binary nature and clear separation between the background and foreground but it is getting higher demand for many applications. Most previous researches in this field depend on insertion watermark in the document, the drawback in these techniques lie in the fact that changing pixel values in a binary document could introduce irregularities that are very visually noticeable. In this paper, a new method is proposed for object-based text document authentication, in which I propose a different approach where a text document is signed by shifting individual words slightly left or right from their original positions to make the center of gravity for each line fall in with the middle point of intended line. Any modification, addition or deletion in a letter, word, or line in the document will be detected

Study the Effect of Medicinal Plant Extracts on the Growth of Bacterial and Fungal

Study antimicrobial and antifungal activity of three selected plants medicinal Rosemary (Rosmarinus officinalis), Ginger (Zingiber officinale) and Anise (Pimpinella anisum L.). The plants were extracted and dissolved with ethanol, and study the effects of them against growth of some bacterial pathogens isolates like (Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumonia, Staphylococcus aureus, Micrococcus roseus and streptococcus pygenes) also study the effects of this plants extracts against the growth of some fungal like Candida tropicalis, Candida albicanus Penicillium sp. Fusarium sp. Rhizopus sp. Aspergillus niger . The results showed that all plants extracts exhibited antibacterial activity and antifungal activity against the tested isolates in tow concentration (10-1 and 10-3). S. aureus was the most bacterial species effected inhibition zone (18 mm) with Rosemary and the lowest species of bacteria effected and show minimum inhibition zone (8 mm) was Anise against Pseudomonas aeruginosa, on the other hand the highs inhibition zone against fungi was recorded with Anise so (18 mm) which inhabit growth of Aspergillus niger and the minimum inhibition zone (8 mm) show with Ginger against C. albicanus. Keywords: Plant extracts, Rosemary , Ginger , Anis

Antimicrobial Inhibition Activity of Some Plant Oil Extracts (Syzygium aromticum , Cinnamomum zeylanicum and Citrus limon)

The be done study impression concentrations different from of Extraction essential oils some of the plants clove (Syzygium aromticum L.), Cinnamon (Cinnamomum zeylanicum) and lemon  (Citrus  limon)  against isolations bacterial and which included(Staphylococcus aureus, Escherichia coli,  Micrococcus roseus, Serratia  sp) and isolations fungals (Penicillium sp. Rhizopus sp. Fusarium sp., Aspergillus  niger) where showed  results if extract essential of clove got  high inhibition against bacterial ,comparison with extract essential of lemon .Were rate inhibition extract oil of clove against bacterial at concentration 0.1, 8.98%, 10,67%, 9.48%, 11.54% mg/ml  on respectively and against fungal 18.24%, 17,84%, 15.08%, 16.15% mg/ml  on respectively while extract of lemon were rate inhibition low from inhibition extract of clove and got inhibition complete against bacterial and fungal extract essential of clove at concentration 1,2.5,5 mg/ml while got inhibition complete against bacterial and fungal extract essential of lemon  at concentration 2.5,5 mg/ml while got inhibition complete against fungal extract oil Cinnamon at concentration 1,2.5,5 mg/ml . where showed  results if extract oil Cinnamon got  high inhibition against fungal ,comparison with extract oil clove and lemon. Keywords: Extract oils, plant ,clove ,lemon, Cinnamon, antimicrobi

Nonlinear FE Analysis of Reinforced H.S. Concrete Continuous Beam Strengthened with CFRP Sheet

This paper is focused on the nonlinear finite element analysis of the reinforced high strength concrete continuous beam strength with carbon fiber reinforced polymer sheet. Three full scale continuous beams are analyzed under two points load; the data of analysis are compared with the experimental data provided by Akbarzadeh and Maghsoudi [1]. ANSYS V.11 program is used in FE analysis, the results obtained from analysis give good agreement with experimental result when compared load-deflection responses, ultimate strength, and the crack patterns. The results showed that with increasing the number of layers, the ultimate strength of beams are increase by amount reached (14%) for each layer. The failure mode different by increasing number of CFRP sheet layers when the beam strengthened by one layer of CFRP sheet failed by tensile rupture of CFRP sheet, and beam strengthened by more than one layer failed by intermediate crack (IC) debonding of CFRP sheet

CFD Simulation of Unsteady State Thermal Analysis for Circular Fins

Analytical solutions to the unsteady heat conduction for a two dimensional cylindrical fin with general boundary conditions obtained by the principle of separation variables. In this research, a computational fluid dynamics (CFD) model of the cylindrical fins is implemented with the help of ANSYS Multiphysics software. The material used for this purpose is steel. In this analysis, the partial differentiation is directly transformed into ordinary differential equations. The results obtained computationally are found in well agreement with the obtained analytically. Keywords: ANSYS Multiphysics 11, heat conduction, analytical temperature distribution, fins

Network Coded Modulation for Two Way Relay Networks

Modern wireless networks use cooperative relaying to expand its coverage area. Wireless relaying allows mobile terminals toparticipate in transmission even when these terminals are not being the initial source or final destination. This can be achieved in differentways ranging from simple conventional relaying to more sophisticated coding at terminal and relay nodes to improve transmissionperformance. The proposed work here studied such system by simulating different coding techniques to be used in two way relay networkcoding (TWRC). Some of these techniques were previously proposed to improve transmission performance in conventional datacommunication systems. BER performance of different arrangements of coding and relaying schemes are evaluated using computersimulation tests. Ideal AWGN channel model and standard wireless channel models for wireless networks are considered in the simulationtests. The results have been shown that coding schemes such as Trellis Coded Modulation (TCM) and Repeat Accumulate (RA) codes aremore suitable in two way relaying networks. Over AWGN, TCM-8PSK improves BER performance by at least 2 dB at high SNR fordifferent relaying arrangements. For fading channels, this advantage is slightly reduced. Regenerative repeating at relay node seems to be apromising arrangement. It seems that there is no sense in using RA codes over fading channels due to its poor performance and relativelylower speed caused by repetitions

Article Review: The Approach to Celiac Disease in Children

A persistent, global, immunological illness called CD affects those who are genetically predisposed to it. Inside the average population, celiac disease is thought to affect 1% of people worldwide. Its incidence varies according to regional or racial differences. Due to improved medical understanding with awareness, as well as the widespread use of extremely sensitive or precise diagnostic tests for celiac disease, the incidence of celiac disease had considerably grown over the last thirty years. Even though there is more understanding or awareness regarding celiac disease, up to 95% of celiac sufferers still go untreated. The uneven nature of small intestinal mucosa alterations may result in false-negative small intestinal histopathology. Throughout Western Europe, one percent of people suffer with CD. The research of milder clinical traits or the use of serological testing has boosted the detection accuracy. Although the age of presentation varies, individuals often present during the fourth or sixth decades. Compared to juvenile instances, adult’s instances of CD are more prevalent, with individuals as old as 65 are now being identified or given diagnoses. It usually happens after adding gluten to the diet. There is a considerable change toward fewer patients presenting with mild dementia or as symptomatic adults identified during testing, however there is a tendency towards decreasing individuals who present with severe CD marked by diarrhoea