Fabricate and Characterization of SrTiO3-based MIM capacitors

The conventional method uses the stoichiometric mixture of metallic oxides to synthesize polycrystalline SrTiO3. The SrTiO3 was prepared by spin coating to fabricate Metal-Insulator-Matel (MIM) aluminum-SrTiO3 film-aluminum. The cubic structure of the prepared thin film of SrTiO3 was confirmed by X-ray diffraction analysis. Strontium Titanate was deposited on silicon substrates. Studying the effect of the film thickness on the structural and electrical properties. The surface morphology of deposited thin films was studied using a scanning electron microscope. Electrical properties for SrTiO3 films at constant frequency were measured. The electrical conductivity decreases with increasing thickness. The behavior of (capacitance- Frequency) at different thicknesses was discussed. It is noted that the dielectric constant decreases with increasing frequency for all films, and the dielectric constant increases as thickness increases

Optical Properties of Ferroelectric Thin Film Prepared by PLD Technique

Polycrystalline SrTiO3 is synthesized from a stoichiometric combination of metallic oxides by standard ceramic synthesis methods. SrTiO3 thin film X-ray diffraction examination confirmed the cubic structure phase. Strontium Titanate was deposited on the glass substrate. Studying the effect of annealing temperature on the structural properties of the glass of substrate, it is clear that increasing the annealing temperature can improve the crystallinity of SrTiO3 thin films. The surface morphology of the deposited thin films was studied using Scanning Electronic macroscopy; it is observed that the grain size increases with increasing the annealing temperature. The transitions of SrTiO3 films show high transmittance within the wavelength range (300-800nm), making them suitable for antireflection coating in this region. The optical energy gap of SrTiO3 films at various annealing temperatures was measured. It decreases as the annealing temperature of the coatings increases

Transmitting audio via fiber optics under nonlinear effects and optimized tuning parameters based on Co-simulation of matlab and optisystemTM

Limitations of conventional wires such as copper wires are causing dispersion and distortion of the message signal for long distances communication especially for the wide bandwidths. The ability of fiber optic to overcome this problem is making it a dominant transmission medium. Despite of this major positive attribute of optic fibers, there is still a downside for using the fiber optic communication; that is the nonlinearity problem especially at the very high frequency bandwidth. For the first time, a desigen of an audio signal is suggested and executed in MatLab with an integration with OptiSystemTM software to discuss and solve this issu. The audio signal is then transmitted in different shapes of modulation signals (NRZ, RZ & RC) for different distances (100 km & 75 km) via a fiber optic media to be received in a receiving part of the simulated system. Three tests are used to do so. The first is the Quality-factor (Q-Factor) against the received power, second test is eye diagram performance and finally is the measuring of the amplitude of output (received) signal for each modulation signal shape using the Oscilloscope Visualizer. The NZR modulation signal was found to be the best one of the three used signals’ types in all three tests. The Q-factor for NRZ pulse shape (=12) was higher than that for RZ (=10) and RC (=8) for a 100 km distance at the same received power level

Improved technique for hiding data in a colored and a monochrome image

Find a new way to hide the different types of confidential and important text files inside the images without noticing any change or distortion of the information in the images after the process of concealment or attempt to be detected by hackers. And then extract these texts and retrieved on demand without loss or loss or distortion of any of its content. The algorithm was used to hide the different text in different image formats using (256) elements, monochrome and color where about 4500 characters were hidden in a monochrome image and about 900 characters in a color image and with a hiding distance (S) where N = 3, key = 3. The overall error rate is low (0.05-0.17) and no distortions were observed on the resulting image

Securing Virtual Architecture of Smartphones based on Network Function Virtualization

One of the most difficult parts of Network Function Virtualization (NFV) installations is security. The NFV environment is a large-scale, software-driven one with a variety of components. Network topologies and traffic flows are continuously and managed to change. Such complexity necessitates a comprehensive security framework that permits automatic and to manage changeable network conditions, a quick response is required with the least amount of manual involvement. This paper introduced many solutions for securing the NFV environment from attacks such as (Specter and DoS) that attack parts of this architecture based on some experiments. Applied NFV on an operating system of smartphones (Android). We tested some attacks on the device and then on some of the layers in the architecture. We obtain new and obvious results, by comparison, to traditional and updated NFV architecture. Also, update the NFV architecture using vCenter/ESX and Hyper-V being two important terms in security After adding the necessary algorithms to protect the NFV architecture, we noticed about 128 hours to hack a 1,4 megabyte (WinRAR) file, while the same file and the same size needed 126 hours to reach the root without the algorithms used to protect the architecture

Segmenting video frame images using genetic algorithms

Image segmentation plays an important role in computer vision. It is a process that partitions a digital image into several meaningful regions, by identifying regions of an image that have common properties while separating regions that are dissimilar. The image segmentation problem is posed as an optimization procedure. In this thesis, an optimization approach based on genetic algorithm is introduced for finding optimal image segmentation. The design and implementation of genetic algorithm image segment or (GSAI) system are described. GSAI system employs finds optimal value using genetic operators "crossover operator and mutation operator". The different proposed / implementation segmentation methods of the GSAI system were tested using Gray image are taken from one films and with size 352x240 pixels for video frames images of  In this is work focused on genetic algorithm coefficients which affect in direct and active way in the work of GA to study and analysis dependable video images which are taken from video clips after partitioning to multiple frames

Study on the effect of the substrate material type and thickness on the performance of the filtering antenna design

This article presents a new design of a four-pole microstrip filtering antenna. The filtering antenna consists of a bandpass filter, which has four resonators integrated to a monopole patch antenna. The filtering antenna is designed with a relatively high bandwidth of about 1.22 GHz to satisfy a high-speed data transmission. Three types of dielectric substrate materials were used for the design of the filtering antenna, which is RT/Duroid 5880, RO3003, and FR-4. The simulation results of the filtering antenna design, which are established on the three different dielectric substrate materials, are done by using Computer Simulation Technology (CST) software. Comparison results of the filtering antenna that is established on the three different dielectric substrate materials are done at a fixed substrate height and different substrate heights. The filtering antenna is designed at a center frequency f0 = 2.412 GHz, which is suitable for WLAN applications

Effect of Obesity on Ovarian Reserve Parameters in midreproductive age Women.

Background:The initiation and maintenance of reproductive functions are related to an optimal body weight in women. Body weight affectthe ovarian reserve which is basically an estimate of how many oocytes (eggs) are left in the ovaries. Objective: To study the relationship between obesity and serum and ultrasound markers of ovarian reserve in mid-reproductive age women (21- 35 years old). Patients and method:Twenty participants (“obese”) had a body mass index (BMI) of 30 to 35 Kg/m2 and another 20 participants (“non-obese”) had a BMI20-29 kg/m2. The obese women had a mean age of 27.9 years and the non-obese women had a mean age of29.5 years. Blood samples were collected from all participants, anthropometric measurements were calculated, and transvaginal ultrasonography was performed to measure the antral follicle count (AFC) during the early follicular phase. The blood samples were assayed for antimüllerian hormone (AMH), follicle-stimulating hormone (FSH) and estradiol (E2). Results: Therewas no significant difference between the two groups regarding ovarian reserve markers and there is no significant correlation between these markers and BMI, except forserum E2 in the obese group. Conclusion: Obesity has no effect on the levels of serum FSH, AMH, orAFCindicating that obesity is unlikely to affect ovarian reserve in the mid-reproductive age grou