International journal of electrical and computer engineering systems

2019 ◽  
Keyword(s):  
Computer Engineering ◽  
Engineering Systems

scholarly journals Search for defects and assessment of the current condition of engineering structures with the help of georadars (review. Part II)

2020 ◽  
Keyword(s):  
Mathematical Physics ◽  
Primary Data ◽  
Modern Theory ◽  
Computer Engineering ◽  
Engineering Systems ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Engineering Structures ◽  
Modern Computer ◽  
Non Destructive

The relevance. The development of technical means for non-destructive testing and remote sensing is an important practical task. This is primarily due to the fact that modern means of non-destructive testing open up ample opportunities for the introduction of new technologies and increase the economic efficiency of measures for the maintenance of various technical and construction objects at a relatively low cost of such work. In this regard, the development of computational algorithms for processing primary data and software products for the subsequent interpretation of the results obtained using computer engineering systems is of great importance. The purpose of the work is to review technical means, signal processing methods and some computer-oriented engineering systems for solving problems of detecting various defects in engineering structures and building structures. Materials and methods. The paper provides a brief overview of methods for processing primary data sets obtained using pulsed GPR. At the next stage, processing is carried out using the GeoVizy program. Finally, the main focus of the work is on the analysis of the capabilities of modern computer engineering tools. Also used the numerical - analytical methods of the modern theory of diffraction and methods of signal analysis in the space-time domain. Results. The results are based not only on scientific articles, but also on the analysis of the capabilities of modern computer modeling systems, as well as some mathematical models obtained by the author. Conclusions. The results presented in the article allow one to talk about a new direction in scientific research. This direction can be defined as combined multi-parametric analysis - CoMPA. The purpose of this direction is to conduct research of various interrelated processes in technical structures by using the methods of mathematical physics, combining not only the analysis of their interaction with fields of different physical nature, but also involving the appropriate models from various areas of mathematical physics. The significance of the results obtained consists not only of new models of data processing and interpretation, but also of the prospects for further progress in the field of technical means of control and diagnostics.

Laboratory Practicum on Computer Graphics

2017 ◽  
Vol 5 (3) ◽  
pp. 78-85 ◽  
Author(s):  
А. Алексюк ◽  
A. Aleksyuk
Keyword(s):  
Computer Graphics ◽  
Three Dimensional ◽  
Arbitrary Point ◽  
Computer Engineering ◽  
Engineering Systems ◽  
Central Projections ◽  
Geometric Transformations ◽  
Computer Screen ◽  
Three Dimensional Objects ◽  
Screen Plane

To master such important section of computer graphics as “Geometric Transformations of Coordinates” have been proposed laboratory works on discipline “Engineering and Computer Graphics” for MSUN students of specialties 27.03.04 “Management in Engineering Systems” and 09.03.01 “Informatics and Computer Engineering”. In contrast to existing laboratory works on computer graphics, demanding the knowledge of algorithmic languages and programming essentials, the presented tasks are performed in a MathCAD package, which allows represent results in the form of geometrical drawings without writing complicated computer programs. In this paper are considered elementary geometrical transformations and their compositions. Matrixes of object coordinates transformations at transfer, rotation and scaling on the plane and in space have been described. Constructions of orthogonal, axonometric and central projections on screen plane have been considered. Distinctions in algorithms for objects’ geometrical transformations above reference zero and arbitrary point have been noted. It has been showed that the end result of complex transformations depends on sequence of elementary transformations. A large number of examples covering the laboratory practicum’s content have been provided. Results have been presented in the form of numbers and drawings using MathCAD. In the first laboratory work have been considered the objects geometrical transformations (transfer, rotation and scaling) on the plane and in space; in the second one – construction of central, orthogonal and axonometric projections for three-dimensional objects on a computer screen (plane). Have been developed methodological instructive regulations for performance of laboratory and independent works which are used for students training on the MSUN’s descriptive geometry and graphics chair.

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