Comparison of characteristics of single-stage centrifugal compressor is obtained by the methods of computational gas dynamics with real data

Describes a method to study the flow of gas in PPM by using the software ANSYS and redesign of replacement flow parts under different conditions of gas flow.Описывается метод исследования течения газа в ЦБК с помощью программного комплекса ANSYS и перепроектирования сменных проточных частей под различные условия течения газа

Predicting Students' Degree Completion Using Decision Trees

Educational Data Mining (EDM) helped institutions to improve students' performance by predicting student's future learning behavior. To benefit from this, the researchers conducted this study to predict the successful degree completion and provide early intervention as necessary. Decision Tree algorithm provided by WEKA is used to build the model using students' data such as Entrance Exam Results, gender, school type where they graduated high school and final grades from English 1, Algebra and major subjects. Students who entered the University from school years 2012-2013, 2013-2014, 2014-2015 and 2015-2016 were selected. RandomForest suited best for the model and desktop application was designed and evaluated as Outstanding in terms of Efficiency, Accuracy and User Friendliness.

Generation of Optical-Terahertz Solitons in Quadratically Nonlinear Media

The possibility of generation of new type of optical-terahertz solitons by resonant optical rectification in quadratically nonlinear media is examined. The existence of various types of solitons is analyzed. Bound solitonic state of an optical laser pulse and a terahertz few cycle pulse becomes possible under condition of equality of the group velocity vg of optical pulse to the phase velocity vph of terahertz pulse. The conditions of soliton stability in bulk medium are discussed

Generation of Optical-Terahertz Solitons in Quadratically Nonlinear Media

The possibility of generation of new type of optical-terahertz solitons by resonant optical rectification in quadratically nonlinear media is examined. The existence of various types of solitons is analyzed. Bound solitonic state of an optical laser pulse and a terahertz few cycle pulse becomes possible under condition of equality of the group velocity vg of optical pulse to the phase velocity vph of terahertz pulse. The conditions of soliton stability in bulk medium are discussed

Dali a!n' (Dal'nii) (J-51-40) : Kitai, provint s!ii a! Li a!onin /

Izdanie 1973 g. Military topographic map showing numbered government, military, administrative, and industrial facilities.; Relief shown by contours, spot heights, and rock drawings. Depths shown by contours and soundings.; Title from sheet 1.; "Sostavleno po materialam na 1968, 69 gg."; "Sistema koordinat 1942 g."; Sheets numbered: List 1 [thru] List 4.; Former security classification in margins: Sekretno.; Includes text, indexes, and sheet-assembly diagrams.; "I-1 II 73-Tb. [thru] I-4 III 73-Tb."; Also available online http://nla.gov.au/nla.map-vn6453557

Localized modulated waves and longitudinal model of microtubules

We here study nonlinear dynamics of microtubule (MT). A so-called u - model is explained in detail. A single longitudinal degree of freedom per MT subunits is assumed. It is known that a continuum approximation of a basic discrete dynamical equation of motion enables existence of kink and antikink solitons along MT. In this paper we use semi- discrete approximation for this equation and show that modulated solitonic waves could propagate as well. We suggest possible biological implications of these waves. Also, a detailed parameter analysis is performed. (C) 2016 Elsevier Inc. All rights reserved

Demodulated standing solitary wave and DNA-RNA transcription

Nonlinear dynamics of DNA molecule at segments where DNA-RNA transcription occurs is studied. Our basic idea is that the solitary wave, moving along the chain, transforms into a demodulated one at these segments. The second idea is that the wave becomes a standing one due to interaction with DNA surrounding, e.g., RNA polymerase molecules. We explain why this is biologically convenient and show that our results match the experimental ones. In addition, we suggest how to experimentally determine crucial constant describing covalent bonds within DNA. © 2018 Author(s)