Study of Spectral and thermal properties of Selenium Diatomic Halides by Semi-empirical Treatment

The spectroscopic properties, potential energy curve, dipole moments, total charge density, Electrostatic potential as well as the thermodynamic properties of selenium diatomic halides have been studied using code Mopac.7.21 and hyperchem, semi-empirical molecular orbital of MNDO-method (modified neglected of differential overlap) of parameterization PM3 involving quantum mechanical semi-empirical Hamiltonian. The relevant molecular parameters like interatomic distance, bond angle, dihedral angle and net charge were also calculated

Study the Optical and Structural Properties for Thin Film Zinc Oxide (ZNO) Produced by Pulsed Laser Deposition

اغشيه اوكسيد الزنك المحضرة بتقنيه الترسيب بالليزر النبضي باستخدام ليزر النديميوم ياك Q-Switching ذو الطول الموجي( (1.06µm ومعدل تكرار(6Hz)  ولطاقه ليزر  500 mJ))   بتقنيه الفراغ ولضغط  تورر في درجه حراره الغرفة .  الخواص البصرية التي تتضمن معامل الامتصاصية ومعامل الخمود ومعامل الانكسار لأغشيه اوكسيد الزنك تم ايجادها ومناقشه النتائج . من طيف الامتصاصية لا وكسيد الزنك  اظهرت النتائج بانه يمتلك فجوه طاقه مباشره مقدارها((3eV . استخدم طيف تحويل فورير للأشعة تحت الحمراء لبيان وجود الأصرة بين الزنك والاوكسجين.                                                                                                   Zinc oxide (ZnO) was prepared by pulsed laser deposition(PLD) using Q-Switching Nd: YAG laser with  =Nd:YAG laser ( a=1064 nm , f=6heposotion NE (ZnPc) THIN FILMS PREPARED BY PULSED LASER DEPOSITION                1064 nm, Repetition rate (f )= 6 Hz , and Energy (E) = 500 mJ at room temperature under vacuum condition with torr. The optical properties included the absorption coefficient, extinction coefficient, index of refractive for the films of ZnO was evaluated and the results are discussed. The energy band gap of thin-film ZnO 3 (eV) at room temperature. The optical transition was found to be direct and allowed transition. Moreover, UV–visible spectra were used to evaluate the ZnO energy gap. FTIR spectra for ZnO used to the presence of  Zn-O bonding

TE-N2 Laser by Using Low Inductance Capacitor

The design, construction and operation of a transversely excited N2 laser using low inductance capacitors, is presented, the laser pulse generation is 1200μJ with pulse width 8ns when operated at about 30mbar with applied voltage of 15-30 kV. The system is capable of giving 150 kW peak power. The best values of specific energy and breakdown voltage are 0.03 J/L and 600 V/cm-mbar respectivel

Modelling, Identification and Control of A" Magnetic Levitation CE152

43 unstable, it should be linearized at optional operating point and a digital PID controller with a fine tuned parameters is designed to track a small varying input signals. Finally the simulation’s model is validated with the real system, the results show the simulation’s model is adequately represents the real magnetic levitation system

Cyber Security, Threat Intelligence: Defending the Digital Platform

Network breaches are happening at a phenomenal scale. The unabated exponential level is forcing enterprise systems to scramble for solutions since the world is so interconnected and digitized and the internet knows no boundaries. Due to big data explosion, the platform for attackers to work continues to grow. Most breached entities are not aware that they have been compromised for weeks but finds out after an external audit or a third party notifies the organizations. Since most networks will be breached at some point, it is proper to note that legacy platforms will no longer stand a chance to defend against the signature-less attacks. This study will create threat awareness, find out capabilities of threat actors, their motivations and objectives and identify best practices

Holograms in Optical Wireless Communications

Adaptive beam steering in optical wireless communication (OWC) system has been shown to offer performance enhancements over traditional OWC systems. However, an increase in the computational cost is incurred. In this chapter, we introduce a fast hologram selection technique to speed up the adaptation process. We propose a fast delay, angle and power adaptive holograms (FDAPA-Holograms) approach based on a divide and conquer methodology and evaluate it with angle diversity receivers in a mobile optical wireless (OW) system. The fast and efficient fully adaptive FDAPA-Holograms system can improve the receiver signal to noise ratio (SNR) and reduce the required time to estimate the position of the receiver. The adaptation techniques (angle, power and delay) offer a degree of freedom in the system design. The proposed system FDAPA-Holograms is able to achieve high data rate of 5 Gb/s with full mobility. Simulation results show that the proposed 5 Gb/s FDAPA-Holograms achieves around 13 dB SNR under mobility and under eye safety regulations. Furthermore, a fast divide and conquer search algorithm is introduced to find the optimum hologram as well as to reduce the computation time. The proposed system (FDAPA-Holograms) reduces the computation time required to find the best hologram location from 64 ms using conventional adaptive system to around 14 ms