Journal Issue: Научная визуализация
Загружается...
Volume
2023-15
Number
2
Issue Date
Journal Title
Journal ISSN
2079-3537
Том журнала
Том журнала
Научная визуализация
(2023-15)
Статьи
Публикация
Открытый доступ
Integrated Use of Various Software Environments for Increasing the Level of Visualization and Perception of Information
(2023) Nemtinov, V. A. ; Podina, A. A. ; Borisenko, A. B. ; Morozov, V. V. ; Protasova, Yu. V. ; Nemtinov, K. V.
Implementation of various software tools in the educational process affects formation of students’ professional competencies. This influence should be taken into account in scientific and methodological support of the modern education system. The purpose of the article is to develop a technology for creating educational VR content that provides immersion into a virtual thematic space using a variety of different software environments and improves the effectiveness of teaching. In this article, the technology of creating an electronic course using a complex of specialized software tools is considered. The initial stage of such technology is to develop a course description that includes data and knowledge about the object or phenomenon under study. Three-dimensional models of virtual objects created in SketchUp, Blender. Solidworks, Compass-3D, etc. are used for technical objects. Then 3D models of objects and landscape are used for creating a virtual space in the Twinmotion software package. Then photorealistic panoramas, images and videos are imported from Twinmotion into 3DVista Virtual Tour Pro to create a virtual tour. At the final stage, the virtual tour is integrated into the LMS Moodle learning management system. The implementation of the technology of integrated use of specialized software tools was tested in the creation of educational content that provides immersion into a virtual thematic space on the example of the course "History of the Tambov Region", which is included in many educational programs at Tambov educational institutions. High efficiency of developed educational content is confirmed by the survey results of several groups of students and its further analysis using Importance-Performance Analysis (IPA) methodology; as well as by checking learning achievements based on testing two groups of students of 12 people each. The first test group studied the discipline using the proposed electronic content, and the second one without it. The test results showed that the proportion of correct answers to test questions in the first group was 17% higher than for the students of the second group. Thus, the authors proposed the technology for development of educational content, which includes a number of specialized software tools, as well as the organization of the educational process using innovative educational means. Moreover, the use of the proposed technology allows students to develop teamwork and interpersonal communication skills by interactive lectures and group discussions.
Публикация
Открытый доступ
Using Topological Data Analysis to Visualize Instrument Output
(2023) Chukanov, S. N. ; Chukanov, I. S.
The article discusses Takens embedding for 2D and 3D visualization of 1D time series data. The paper considers the use of topological data analysis in conjunction with Takens embedding to analyze the output information of a dynamic system - a rigid body. 3D images of curves constructed from three components of the angular velocity vector of a rigid body for various values of the main moments of inertia are constructed. Three-dimensional images of the curves constructed on the basis of the Takens embedding for the component of the angular velocity of a rigid body for various values of the principal moments of inertia are constructed. Distances between 3D images of curves are determined by constructing persistent landscape functions. Using the method of topological data analysis in conjunction with Takens embedding for image comparison allows you to classify and identify images and output information of the instrumental composition.
Публикация
Открытый доступ
Application of Visualization Tools for Optimization Problems of the Transport Model
(2023) Adaev, R. B. ; Vetrova, O. A.
The article discusses the combination of problems of transport system simulation and the visualization of the results of the optimization experiment. Simulation is widely used in logistics and supply chains, healthcare, transport, warehouse and transportation management, finance, business processes, service systems, railways, strategic planning and management. The paper discusses the solution to the optimisation problem for management of the intersection of roads of the megalopolis transport network taking advantage of one of the AnyLogic simulation tools. The AnyLogic development environment uses an object-oriented approach that helps in the organization and presentation of complex systems. Built-in animation tools make it easy to visualize the simulation model, as well as interpretation of the behavior of complex systems. The manuscript describes the visualization of the construction of an intersection and solving the problem of calculating the optimal duration of traffic light phases using an optimization experiment.
Публикация
Открытый доступ
Visualization of the Processes Occurring during Spontaneous Triggering of a Vapor Explosion
(2023) Vasil’ev, N. V. ; Vavilov, S. N. ; Zeigarnik, Yu. A.
The vapor explosion process is an explosive increase in the volume of vapor, accompanied by a sharp rise in pressure when a hot melt enters a cold liquid medium with a temperature above its limiting superheat temperature. This phenomenon incurs the threat of great destruction and human casualties in certain types of accidents in the nuclear, metallurgical, pulp and paper industries. Nevertheless, there are still many insufficiently studied aspects of this phenomenon, one of which is the initiation (triggering) of the process.
There are a number of logically fairly consistent descriptions of the processes occurring at a given stage of a vapor explosion. However, almost all of them are based on experiments carried out with external (forced) triggering. The article describes the data obtained during spontaneous triggering, i.e. under conditions much closer to reality.
In this paper, using high-speed video recording (with a frame rate of up to 180 kHz and an exposure time of up to 2 μs), the first visualization of the processes occurring during spontaneous triggering of a vapor explosion on molten NaCl salt drops in distilled water subcooled to saturation temperature is presented. It is shown that when several drops of the NaCl melt interact with water, the micro vapor explosion that occurred on one drop, with an interval of several tens of microseconds, causes explosive vaporization on neighboring drops as well. Thus, the logical descriptions of the processes received instrumental confirmation.
Публикация
Открытый доступ
Bicubic Surface on a Fixed Frame: Calculation and Visualization
(2023) Korotkiy, V. A.; Usmanova, E. A.
The paper proposes an algorithm for calculating a composite bicubic surface with a fixed frame formed by longitudinal (along the x axis) and transverse (along the y axis) cubic splines. Frame line equations are taken as the main boundary conditions. According to the proposed algorithm, the problem is divided into two stages: first, the frame line equations are found and then the coefficients included in the equations of the bicubic portions forming the bicubic surface are calculated. This approach reduces the size of the characteristic matrix of the linear equation system by reducing the number of coefficients in the surface equation. The matrix size is reduced from 16mn to 9mn, where m and n are the number of bicubic portions along the x and y axes. Surface visualization is reduced to building a grid of longitudinal and transverse generators, the equations of which are formed from the surface equation by substituting y=const (longitudinal generators) or x=const (transverse generators). In this paper we calculate and visualize bicubic surfaces with a frame formed by a mixed set of cubic splines and straight lines. The clarity of the examples is ensured by indicating the numerical values of all calculated magnitudes with an accuracy of up to nine significant figures.