The article presents an approach to solve the problem of non-standard errors correction in the process of creating permanent joints using high-temperature methods such as induction soldering, ...electron beam welding, diffusion welding. The use of such high-tech methods for creating integral joints causes the use of intelligent methods for correcting non-normative errors. Within the framework of this work, it is proposed to use artificial neural networks for correction of non-normative errors in the technological process of creating integral connections. The work includes the process of development, training and experimental verification of the non-normative errors correction method of based on artificial neural networks.
This article is devoted to the analysis of the geographical structure of the world energy industry. The article analyzes trends in global energy production and consumption from 1990 to 2018. ...Statistical indicators of energy production and consumption are also considered. The study notes that the leading countries in GNP production are the largest energy consumers in the world. The authors consider the issues of distribution of production and consumption of energy resources across the world, changes in the relationship between the leaders in primary energy production and energy consumption. Electricity consumption and production by regions of the world are considered, and the share of global energy intensity of energy by fuel type is determined. In addition, the article analyzes the world consumption of natural gas and coal, as well as its extraction. Changes in world demand for petroleum products and their consumption are considered.
Abstract
The presented work is devoted to the study of the effect of various values of the electron beam current on the distribution of the energy cross section of the weld when conducting the ...technological process of electron-beam welding of thin-walled structures. The work is used by the simulation system of COMSOL Multiphysics, in which mathematical models of energy distribution proposed by the authors are implemented with electron beam welding. Imitation modelling was carried out for two materials widely used in the aerospace industry: titan alloy BT14 and AMG aluminum alloy. The values of the parameters for which the simulation was carried out were selected as a result of the predetermined process of optimizing the technological mode of electron beam welding for the construction under study. In the process of the research, a change in the value of the electron beam current is carried out both in less and to the large side. The article presents visualization for the three values of the parameter under study for each material, which makes it possible to judge the effectiveness of the previously formed set of optimal parameter values.
Automation of the petrochemical industry has not lost its relevance for a long time, despite the numerous solutions found in this area. The issues of increasing the accuracy indicator, reducing ...costs, increasing profitability and, importantly, ensuring the safety of petrochemical production are still awaiting a technological solution. The article touches upon the aspects of the harmful environment of the working area, the explosion and fire hazard of substances, the complexity of the chemical processes and their sensitivity to deviation from predetermined modes. The article proposes to solve a number of these problems by creating an automated workplace for a laboratory assistant. The article presents monitoring of laboratory process control.
This article presents a simulation-dynamic model for calculating long-term economic growth based on the neoclassical model of R. Solow. The model is developed on the basis of the system dynamics ...method, AnyLogic tools. In the constructed model, the calculations were carried out for two variants of the long-term Russian economy development, with and without taking into account scientific and technical progress. The model was used as a tool for researching which of the development options is more profitable. As a result of experiments with options, it was found that a variant that takes into account technical progress is preferred. The conducted study allows concluding that the developed simulation-dynamic model is universal and on its basis, it is possible to conduct various researches on various aspects of the long-term development of different levels economic systems.
Modeling is one of the most important parts of applied research, the processes for which carrying out full-scale experiments is either expensive or highly labor-intensive. The article deals with the ...problem of modeling the energy distribution at the stage of electron beam input during welding. The solution to this problem will allow not only to reduce the cost of testing the technological parameters of electron beam welding of products with new geometry or from new materials, but also to support the decision-making of the technologist when optimizing the manufacturing process of existing products. Based on the theory of thermal processes, mathematical models have been developed that consider the characteristics of the materials to be welded and the technological parameters of the electron-beam welding process. In the course of experimental studies, the energy distribution was simulated when the electron beam was introduced for structures made of two different materials with different geometries. The obtained models for calculating the temperature at the input section not only supplement the complex of existing mathematical models of the electron beam welding process, but also allow expanding their application for calculating and optimizing the welding process, taking into account the excess temperature at the electron beam input section. In the future, this will allow considering the temperature spread at the input stage and obtaining a more stable quality of the welded seam with fewer root defects.
This article observes problems of the branches of the Russian defense industry complex. The short comparative analysis of scientific approaches and applied methods of management of innovative ...business processes of the enterprise of the rocket and space industry is carried out. Features and area of assignment of a system method of management and enhancement of innovative business processes of the enterprise and the method based on "end-to-end" business processes are provided. Need of transition from functional approach to enterprise management, widespread in the last century, to process-based management is proved. The algorithm for increasing the competitiveness of business processes of an enterprise of rocket and space industry is considered in the article. It allows to consider the nature and conditions of implementation of innovative activities and provide not only the effective use of limited resources, but also the sustainable development of the rocket and space industry enterprise and an industry in general, allowing to successfully solve problems of increase in defense capability of the state. The need of control technique development by innovative business processes of the rocket and space industry enterprise, necessary for increase in their competitiveness, is proved.
The article deals with the problem of constructing an automated system for monitoring and controlling the oil-pumping station of a conveyor shop. Based on the analysis of the subject area, the ...shortcomings inherent in the work of the coal industry enterprise conveyor shop are revealed, and the automation tasks are set. The software is developed on the basis of the "GRANIT" telecommunication complex, intended for receiving and converting telemechanical information coming from controlled objects. As the hardware of the automation system, Siemens Simatic S7-400 controllers are selected, which ensure high reliability of the system and are widely used at Russian mining enterprises. As development tools, the SIMP Light environment for the implementation of the operator panel is used, as well as the programming language Pascal for writing scripts. Control in the automation system is realized through 6 channels, the main parameters of which are represented in the work. The application of the developed automation system allows operators to obtain the data of interest in numerical terms, to forecast emergency situations, and to track the elements of the system that initiated the failure.
The paper deals with the problem of analyzing enterprises' employees certification results. To solve the problem, it is proposed to use Kohonen self-organizing maps for in-depth data analysis. Also, ...the proposed method allows to visualize the company's employees certification results for its managers in order to support decision-making. As a result of experimental studies, an effective structure of the Kohonen network was identified, which was used to solve the real problem of analysis. The proposed approach can be implemented as part of an integrated automated system in order to save personnel management time by providing analysis results in a visual form.
The article is devoted to the creation of a system of cartographic models of natural resources for a specific territory. The reasons for the inefficient use of natural resource information in modern ...Russia are described. The place of natural resource mapping in the formation of a natural resource information space is characterized. The task of systematic consideration of natural resources when creating cartographic support for solving the problems of natural resource management and environmental management planning has been set. It is proposed to develop a program for processing images in the GeoTIFF format, intended for the analysis of natural resources. The structure of the program for the planning and management of environmental management is presented. The main functional types of CMRD are outlined: inventory, estimated, forecasted, recommended. The features of their use at various stages of environmental management are identified.
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