This article is devoted to an important problem of calculation of deflected mode of the combustion chamber and the nozzle end of a new liquid-propellant rocket cruise engine. A special attention is given to the methodology of calculation. Three operating modes are considered. The analysis has been conducted in ANSYS software. The methods of conducted research are mathematical modeling, substruc...

Starting with a binary raster, the calculation of exact Euclidean distance from the foreground pixels (1-elements) to the background pixels (0-elements) is a simple yet time-consuming operation. Elsewhere it is argued that for some applications (such as pattern recognition and robotics for example) the calculation of approximate Euclidean distance is a viable, quick and efficient alternative so...

BACKGROUND A mathematical model to help explain the hemodynamic characteristics of perforator flaps based on blood flow resistance systems within the flap will serve as a theoretical guide for the future study and clinical applications of these flaps. METHODS There are 3 major blood flow resistance network systems of a perforator flap. These were defined as the blood flow resistance of an ana...

Explanations of the marked individual differences in elementary school mathematical achievement and mathematical learning disability (MLD or dyscalculia) have involved domain-general factors (working memory, reasoning, processing speed, and oral language) and numerical factors that include single-digit processing efficiency and multidigit skills such as number system knowledge and estimation. T...

This paper presents a method to improve the calculation of functions which specially demand a great amount of computing resources. The method is based on the choice of a weighted primitive which enables the calculation of function values under the scope of a recursive operation. When tackling the design level, the method shows suitable for developing a processor which achieves a satisfying trad...

In this paper, the use of continuous mathematical models of an aircraft in an aircraft simulator is described. The models are of lower degree and less time-consuming for calculation. Computer implementation of the models capable to work faster and more accurately and efficiently is also described. The suggested approach allows to achieve the required precision at accelerated simulation speed us...

????????????. ?????????? ??????????????? ?????????? ??????? ?????? ??????????????? ?????? ?? ??????? ? ?????? ?????????? ??????? ???????? ??????? ?????. ????????????????, ??? ???????????????, ?????? ???????????????? ????????? ?? ???????? ??? ???????????? ?????????????? D. Nuss ?????? ???? ????????? ???????? ?????? ????????? ????????? ??????????? ????????. ???? ?????? — ???????????? ????????????...