scholarly journals Retracted article: Kalyakulin S.Yu., Kuzmin V.V., Mitin E.V., Suldin S.P., Tyurbeeva T.B. Synthesis of the Structure of Technological Processes. Inzhenerernyye tekhnologii i sistemy = Engineering Technologies and Systems. 2020; 30(2):287-299. DOI: 10.15507/2658-4123.030.202002.287-299 (In Russ.)

2021 ◽  
Vol 31 (2) ◽  
pp. 322
Keyword(s):  
Mathematical Modeling ◽  
Mechanical Engineering ◽  
Large Scale ◽  
Technological Processes ◽  
The Press ◽  
Retracted Article

This article by Sergey Yu. Kalyakulin ([email protected]), Vladimir V. Kuzmin ([email protected]), Eduard V. Mitin ([email protected]), Sergey P. Suldin ([email protected]), Tatyana B. Tyurbeeva ([email protected]) has been retracted (i.e. withdrawn from the press) by the editor with permission of the publisher. The reason for the article retraction is detection of large-scale borrowings from the book: Kuzmin V.V., Skhirtladze A.G. [Mathematical Modeling of Technological Processes of Assembly and Machining of Mechanical Engineering Products]. Moscow: Higher School Publ.; 2008. 280 p. ISBN: 978-5-06-004837-7 (In Russ.)

scholarly journals Retracted article: Kalyakulin S.Yu., Kuzmin V.V., Mitin E.V., Suldin S.P., Tyurbeeva T.B. Designing the Structure of Technological Processes Based on Synthesis. Vestnik Mordovskogo universiteta = Mordovia University Bulletin. 2018; 28(1):77–84. DOI: 10.15507/0236-2910.028.201801.077-084 (In Russ.)

2021 ◽  
Vol 31 (2) ◽  
pp. 321
Keyword(s):  
Dimensional Analysis ◽  
Direct Problem ◽  
Large Scale ◽  
Technological Processes ◽  
The Press ◽  
Retracted Article

This article by Sergey Yu. Kalyakulin ([email protected]), Vladimir V. Kuzmin ([email protected]), Eduard V. Mitin ([email protected]), Sergey P. Suldin ([email protected]), Tatyana B. Tyurbeeva ([email protected]) has been retracted (i.e. withdrawn from the press) by the editor with permission of the publisher. The reason for the article retraction is detection of large-scale borrowings from the article: Kuzmin V.V., Maksimovskiy D.E. Choice of Technological Bases on the Basis of the Decision of a Direct Problem of the Dimensional Analysis. Vestnik MGTU STANKIN = MSTU STANKIN Bulletin. 2012; (2):64-69. (In Russ.)

The usage prospects investigation of the software environments for simulation modeling at the development and optimization of the machine-building production

2021 ◽  
Author(s):  
Keyword(s):  
Simulation Modeling ◽  
Mechanical Engineering ◽  
Machine Building ◽  
Simulation Software ◽  
Metals And Alloys ◽  
Point Of View ◽  
Deformation Processing ◽  
Technological Processes ◽  
Modeling Methods ◽  
Adequate Analysis

The investigation results of the applied simulation modeling programs market from the point of view of the usage possibility and expediency at the development or optimization of technological processes on domestic machinebuilding enterprises are presented. The analysis of the technological processes features in machine-building, and in particular aircraft construction, at domestic enterprises is carried out. The production features of the metalconsuming products and semi-finished products from the point of view these processes simulation expediency are considered. The expediency of carrying out simulation modeling of machine-building production, which provides adequate analysis results at minimal costs in comparison with other modeling methods are shown. The main criteria for choosing of specific simulation software are given. Keywords mechanical engineering technologies; metal-intensive production; aircraft construction; deformation processing of metals and alloys; foundry; equipment productivity; optimal stocks of semi-finished products; insurance stocks; simulation modeling; visualiz

scholarly journals Extraordinary curtailment of massive typhus epidemic in the Warsaw Ghetto

2020 ◽  
Vol 6 (30) ◽  
pp. eabc0927
Author(s):  
Lewi Stone ◽  
Daihai He ◽  
Stephan Lehnstaedt ◽  
Yael Artzy-Randrup
Keyword(s):  
Mathematical Modeling ◽  
World War Ii ◽  
Large Scale ◽  
Epidemic Outbreak ◽  
World War ◽  
Food Ration ◽  
Warsaw Ghetto ◽  
War And Society ◽  
The Holocaust ◽  
Deadly Disease

The highly dependent interplay of disease, famine, war, and society is examined based on an extreme period during World War II. Using mathematical modeling, we reassess events during the Holocaust that led to the liquidation of the Warsaw Ghetto (1941–1942), with the eventual goal of deliberately killing ~450,000, mostly Jewish residents, many through widespread starvation and a large-scale typhus epidemic. The Nazis justified genocide supposedly to control the spread of disease. This exemplifies humanity’s ability to turn upon itself, based on racially guided epidemiological principles, merely because of the appearance of a bacterium. Deadly disease and starvation dynamics are explored using modeling and the maths of food ration cards. Strangely, the epidemic was curtailed and was brought to a sudden halt before winter, when typhus normally accelerates. A far more massive epidemic outbreak was prevented through the antiepidemic efforts by the often considered incompetent and corrupt ghetto leadership and the Herculean efforts of ghetto doctors.

ANALYSIS OF THE GROWING PROCESS OF SOY BEAN

2020 ◽  
Author(s):  
Ekaterina Statsenko
Keyword(s):  
Mathematical Modeling ◽  
Regression Analysis ◽  
Food Industry ◽  
Modeling Method ◽  
Grain Weight ◽  
Technological Processes ◽  
Established Relationship ◽  
Method Of Correlation

Prediction of technological processes in various sectors of the food industry using mathematical modeling is becoming increasingly important. The paper describes the effect of various factors on the grain weight after germination by the method of correlation-regression analysis. Using this modeling method, based on the established relationship, it is possible to predict the weight of the grain after germination in various conditions.

Modal Analysis for the Tower of Large Scale

2013 ◽  
Vol 299 ◽  
pp. 31-34
Author(s):  
Jie Zhou ◽  
Ji Sheng Ma ◽  
Hui Yong Deng ◽  
Mei Yin Zhang ◽  
Bao Jian Wu
Keyword(s):  
Mathematical Modeling ◽  
Finite Element ◽  
Optimal Design ◽  
Modeling And Simulation ◽  
Modal Analysis ◽  
Large Scale ◽  
Vibrational Mode ◽  
Dynamical Characteristic ◽  
Shell Elements ◽  
Multimodal Analysis

The rocket launch tower is a kind tower of large scale which is used in many important palces, in order to counter the tower faults problems such as leaning, bulking, etc.According to the theory of multimodal analysis, mathematical modeling and simulation of vibrational mode were conducted for the tower. The paper describes how the finite element modal for steel tower is built by means of beam and shell elements by Patran, and the analysis of the tower’s dynamical characteristic, bulking phenomenon employing commercial software Patran/Nastran,show that the results are closer to the test data,providing a basis for the tower optimal design.

Influence of the Shaper Design of Pneumohydraulic Impact Device on the Form and Duration of the Impact Impulse

2015 ◽  
Vol 756 ◽  
pp. 394-401 ◽  
Author(s):  
Oyuna O. Angatkina ◽  
Petr Y. Krauinsch ◽  
Valentina N. Deryusheva
Keyword(s):  
Mathematical Modeling ◽  
Work Environment ◽  
Mechanical Engineering ◽  
Specific Area ◽  
Impact Device ◽  
Impact Impulse ◽  
The Moment ◽  
The Impact

Impact devices are used in various areas of mechanical engineering and deal with a variety of materials. At the moment, it is determined that an increase in the duration of the impact impulse ensures the constant contact of a headgear (tool) with the work environment. This increases the efficiency of impact devices. We have proposed a shaper that allows to control the shape and duration of the impact impulse. In this paper, results of mathematical modeling of the pneumohydraulic impact device with elastic and viscoelastic shaper is considered. Several designs of impact devices are presented. Parameters which affect the impact impulse are determined. These results can be used in constructing pneumohydraulic impact devices for a specific area of implication.

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