Seminars 2018-2019
Calendar of Physics department seminars in 2018-2019 academy year (Course1)
Abstract:
During the ISIS crisis in Iraq from 2014 to 2017 new waves of social and psychological unrest, conflict and crisis took place in the region. This crisis led thousands of internally displaced persons (IDPs), from other parts of Iraq to flee their homes and seek safety and shelter in Garmian. Very few studies have been conducted on the prevalence of mental health disorders in both Garmian and KRI. Those extant find a high prevalence of mental illnesses in the region compared to other regions .Despite the presence of psychological and social conditions, providing sufficient, high quality mental health services has been challenging. This seminar described article about the results of applying/using therapeutic tools, such as Thought Field Therapy (TFT), to address mental illnesses in the region and KRI. The evidence gathered from applying this therapeutic approach suggests that it is an effective and pragmatic alternative to Cognitive Behavioral Therapy (CBT), especially in complex settings affected by long-term political instability and armed conflicts.
Kamran S. Rasol, 11/12/2018
Abstract:
In this seminar we talking about the three main parts of ANN building blocks. ANN design depends upon three main points:
1- Network topology
2- Adjustment of weights or learning
3- Activation function
Mahmood M. Kareem, 10/12/2018
Abstract:
The development of powerful, high photon flux, Q-switched lasers has drastically changed our perception of light-matter interactions and opened new ways of implementing laser sources for the growth and processing of nanostructured materials. Therefore, Pulsed Laser Deposition (PLD) has emerged as a very important growth technique in the nanotechnology era. PLD has become a well-established technique for the growth of carbon nanotubes, diamond like carbon and ultranano-crystalline.
Jamil Z. Assad, 04/12/2018
Abstract:
During this research we learn about the earthquakes and also we study on the data and information on Kurdistan’s 7.3 earthquake. Using our results we determine two unmapped active faults in the Garmian region. As a reason of not mapping for those faults we can point that there is no any geological studying in the Garmian region and also maybe it is a new fault in this area. It needs to local field studying to determine exact reason and map it as new fault or missing fault on the faults map.
Finding the behavior of time-variation aftershocks, let us to forecast the variations of aftershocks for earthquakes at future.
Kamran S. Rasol, 3/12/2018
Abstract:
Neural networks are parallel computing devices, which is basically an attempt to make a computer model of the brain. The main objective is to develop a system to perform various computational tasks faster than the traditional system. These tasks include pattern recognition and classification, approximation, optimization, and data clustering.
Ali M. Mohammad, 26/11/2018
Abstract:
Solid State Nuclear Track Detectors (SSNTDs) are insulating solids both naturally occurring and man-made. There are several types of these detectors including inorganic crystals, glasses and plastics. When a heavily ionising charged particle passes through such insulating solids, it leaves a narrow trail of damage about 50 Å in diameter along its path. This is called 'Latent Track' as it cannot be seen with the naked eye. It is possible to view this latent track with an electron microscope. The exact nature of the physical and chemical changes occurring at the damage site depends on the charge (Z) and velocity (β = ν/c, where ν is the particle velocity and c is the velocity of light) of the particle, on the chemical structure of the detector material and also on the environmental conditions like temperature and pressure. These latent tracks can be enlarged / developed so that they can be viewed under an optical microscope by etching with some chemicals such as sodium hydroxide and hydrofluoric acid. ... More
Hossein A. Mohammed, 26/11/2018
Abstract:
In 1937 Ettore Majorana speculated that there could be a particle that is its own antiparticle (Majorana fermions). Majorana fermions can emerge as quasiparticles, because a quasiparticle in a superconductor is its own antiparticle (electron hole "symmetry"). ... More
Hossein A. Mohammed, 19/11/2018
Abstract:
Every matter particle (electrons, quarks, etc.) is spinning, i.e. each matter particle carries some intrinsic angular momentum. In particle physics, helicity is the projection of the spin onto the direction of momentum. ... More
Jamil M. Z. Asad, 12/11/2018
Abstract:
The Electric Universe theory highlights the importance of electricity throughout the Universe. It is based on the recognition of existing natural electrical phenomena and the known properties of plasma which make up huge ratio of the visible universe, and react strongly to electromagnetic fields. In this seminar, I explain that why it can't be right by some strong reasons.
Abstract:
Polyvinyl alcohol (PVA) has been doped by different percentage of Copper Chloride (CuCl), films for different weight ratio (0, 1, 1.5, and 2%) were prepared by the well known solution cast method. The optical properties were obtained in the wavelength range (190-1100) nm. Results show that for the pure PVA films the optical constants were increased after doping and with increasing impurity concentration. For indirect allowed transition the optical energy gap decreases from 4.6 eV (for pure PVA) to 3.8 eV (for PVA+2%CuCl). The results show the absorption edge for electrolyte samples moves toward a lower energy region by increasing the salt concentration, leading to the band gap reduction. This study shows that the optical properties of PVA are affected by salt concentration.
Abstract:
Transparent films of Polyvinyl Alcohol with different thicknesses were made by applying solution casting technique at a temperature of (70°C). The optical absorption and transmission spectra were accomplished for all samples at room temperature over the wavelength region (190-1100) nm. Studying the effect of film thickness, which is measured with micrometer with an error not exceeding (5%), on optical parameters gives an indication that all these parameters are affected with thickness. The experimental results for Polyvinyl Alcohol films show that the optical energy gap decreases by the increasing of film thickness. The absorption coefficient, refractive index, extinction coefficient and real and imaginary parts of dielectric constant are increased by increasing the film thickness.
Abstract:
Optical and structural properties of composite films are studied with the effect of Cu nanoparticles doped in PVA. Samples are PVA films of (0.13 mm) thickness are doped with different concentrations of Cu nanoparticles. The nano-composite samples are prepared by the well-known solution cast method. Cu nanoparticles are prepared by laser ablation method using Nd-Yag laser in pure water. Using the absorbance and transmittance of the samples, the effect of doped nanoparticles and their concentration on optical parameters of PVA films including absorption coefficient, optical band gap energy, complex refractive index, complex dielectric function, before and after annealing are extracted and discussed. Studying the effect of Cu nanoparticles on the optical parameters gives an indication that all these parameters are affected. Also the optical properties of the films are highly affected by annealing. Cu-0 bonds are formed in the films and the band gap energy of samples is decreased. Structural properties are studied using X-ray diffraction spectrum. The results show that by doping Cu nanoparticles in PVA, The intensity of diffracted X-ray photons from films has been increased noticeably after the doping process.
Dr. Shakhawan H. Ali, 05/11/2018
Abstract:
Graphene oxide (GO) forms well-ordered liquid crystal (LC) phases in polar solvents. The origin of graphene oxide, lyotropic phase diagram of GO as a function of the lateral dimensions of the GO flakes, their concentration, geometrical confinement configuration and solvent polarity are discussed. Polarising optical microscopy (POM) is mainly stated as a common way to determine the phase evolution through the isotropic-biphasic-nematic transitions of the GO LC. We report that the confinement volume and geometry relative to the particle size is critical for the observation of the lyotropic phase, specifically, this determines the low-end concentration limit for the detection of the GO LC. Additionally, a solvent with higher polarisability stabilises the LC phases at lower concentrations and smaller flake sizes. GO LCs have been proposed for a range of applications from display technologies to conductive fibres, and the behaviour of LC phase formation under confinement imposes a limit on miniaturisation of the dimensions of such GO LC systems.
Pegah A.M. Seidi, 10/23/2018
Abstract:
The aim of the present study was to determine the effectiveness of communication skills training on intimacy and mental health of the participant couples attended in premarital counseling sessions in Ahvaz city. The sample consisted of 40 subjects from the mentioned population who were selected via simple random sampling. The study was an experimental one with pretest-posttest and control group. To collect data Walker & Thompson Intimacy Scale (1983) and Goldberg and Hiller General Health Questionnaire (1979) were implemented .The Experimental group was exposed to 8 communication skills training sessions of 60 minutes each. The control group received no intervention. For data analysis the analysis of multivariate covariance (MANCOVA) and one way analysis of covariance (ANCOVA) was applied as main statistical procedure. The results showed that communication skills training was effective in increasing intimacy and mental health of participant couples in the experimental group.
Dr. Shakhawan H. Ali, 23/10/2018
Absract:
پوختەیەک لە سەر بە ئیلیکترۆنیکردنی تۆمارکردنی ئامادەبوانی خوێندکاران لە رێگای Google Sheets . لە رێگەی ئەم شیتەوە هەموو مامۆستایان دەتوانن تۆماری ئامادەبوانی خوێندکاران بکەن و بە شێوەی ئۆتۆماتیک ببینرێت لە لایەن سەرۆک بەشەوە