Conveners
Saturday Session: Morning
- Anna Kosar ()
Saturday Session: Afternoon
- Danylo Babich (Taras Shevchenko National University of Kyiv)
Presentation Materials
In the medical fields and industrial fields, color reproduction, which reproduces the same colors on displays as those seen by humans, is important. The standard for imaging equipment called UHD, has features such as high resolution, wide color gamut, and high dynamic range compared with standard for HD. With the color gamut has increased from HD to UHD, the saturation of primary colors of...
X-ray imaging technology has been applied in medicine, non-destructive testing in industrial sites, and security inspection in airports. Nowadays, semiconductor detectors are widely used as radiation detectors. Since semiconductor detectors convert X-rays directly into electric charges, they are said to have higher spatial resolution than scintillator detectors, which convert X-rays once into...
Non-destructive testing is routinely performed in factories. This is essential for quality assurance of products and prevention of serious accidents. Among the various non-destructive testing methods that exist, radiographic transmission testing is suitable for inspecting scratches and structures inside objects. Neutrons, a type of radiation, have a higher penetration power into metals than...
Ge detectors are widely used as X/γ detectors, but they need to be cooled by liquid nitrogen, so semiconductor detectors that can operate at room temperature are being studied as an alternative. Typical materials are CdTe and TlBr, which have the advantages of room temperature operation and higher stopping power than Ge. However, compared to Ge, which has been used in practical applications...
The noise analysis and its decreasing technology for CT-imaging is very important problem. Especially this basic studies should be applied by using Mathematical analysis, ①the stochastic Process and ②the Logistic Pure Chaos. In this presentation I wish to explain only about ② .
“Logistic Pure Chaos” represents the new fundamental constructed concept that occurs in the dynamical systems of...
Today, X-ray imaging is applied in the medical, industrial, and security fields.
In the transmission image of X-ray imaging, a detector must be placed on the opposite side of the X-ray source across the subject, which limits the size of the subject that can be captured due to the distance between the X-ray source and the detector. In backscatter X-ray imaging, on the other hand, the X-ray...
Theoretical investigation on nonlinear interaction of intense Bessel-Gauss laser beams with plasma with axial temperature ramp has been presented. Emphasis is put on investigation of self action effects of the laser beam like self focusing, self channelling and axial phase shift of the laser beam. Optical nonlinearity of the plasma has been modelled by the ponderomotive force acting on the...
Optical fiber has become the most widely used transmission medium for high speed applications. However, the standard fiber has several limitations such as chromatic dispersion ...
In order to overcome these limitations, air / silica microstructured fibers (FMAS) appear with original propagation properties. These FMAS consist of a periodic arrangement of air channels parallel to the direction...
Abstract —Sensors have known a global growth in the market regarding the different technologies. Depending on the nature of the phenomenon to be detected, there are biological, chemical and physical sensors. The optical sensors are an important example that defines the physical sensors. The sensors in integrated optics present an excellent alternative for the detection of a physical...
Abstract—The main objective of this search is, to study the photonic crystal fibers; we were interested in the characterization of optical photonic crystal fiber’s properties by studying the impact of geometric distortions on chromatic dispersion and attenuation.
It will first be a question of giving a definition of these fibers which present a new category of waveguide and have advantages...
Optical fibers are widely used in data transmission systems due to their ability to transfer massive amounts of data and their dielectric nature. It is a critical component of the worldwide broadband network infrastructure.
Optical fibers offer a vast and unique transmission bandwidth with very low latency. With Multiple wavelengths per optical fiber network topologies are utilized in...
Due to the increase in the number of mammograms performed in recent years it‘s still difficult for expert radiologists to provide accurate and consistent analyses. Over the past 20 years, diagnostic support tools have taken a remarkable place in the medical and research sector. Several research studies have been developed either to automatically detect deseases (micro-calcifications or...
The conventional continuous wavelet transform (CWT) requires considerable power and time when analyzing long signals. In order to increase the speed of computation we used CWT analysis based on Fast Fourier Transform (CWTFT), this method provides results for long recordings of phonocardiogram signals (PCG) in a short time. The analysis of the CWT depends on the mother wavelet function, in this...