scholarly journals Development of a module for converting OpenFOAM computational meshes into msh-format and its integration into the graphical interface of the platform

2021 ◽  
Vol 16 (93) ◽  
pp. 69-78

The present study is devoted to the development of a software module that converts computational meshes created on the basis of the OpenFOAM platform into the msh format, used in numerical experiments using the ANSYS FLUENT package. Thanks to this conversion, the user is able to use both products in parallel. The ANSYS FLUENT functionality can, for example, be used within the framework of post-processing of a numerical model in most fundamental problems of continuum mechanics (CM), including in hydrodynamics, aerodynamics, and solid mechanics. The existing analogues of the OpenFOAM platform, such as Salome, Helyx-OS, Visual-CFD, have already implemented tools for solving this problem, but due to their partial commercial distribution, the need to pay for technical support services and the lack of full-fledged Russian documentation, the problem of the lack of a graphical shell to simplify the procedure conversion remains relevant. The process of converting computational meshes generated by means of the OpenFOAM platform into the msh-format used in the ANSYS FLUENT package is the subject of this study. The purpose of the work is to develop the source code of a software module that automates the process of determining conversion parameters and starting the conversion process. The work presents a diagram corresponding to the algorithm of a specialist's work with the considered software module. A stack of technologies for typing, debugging and running program code is presented, a stack of tools for using the module in question is presented. The results of the research have been determined, the provisions of its scientific novelty and supposed practical significance have been formulated. The results of testing the application are presented on the example of one of the classic experiments based on the OpenFOAM platform.

2021 ◽  
pp. 78-89
Author(s):  
Mikhail Buinevich ◽  
◽  
Konstantin Izrailov ◽  
Victor Pokussov ◽  
◽  
...  

Purpose of the study: increasing the efficiency of an expert in searching for medium-level (in algorithms) and high-level (in architecture) vulnerabilities in the program code due to the innovative paradigm of the language for its presentation. Method: consists in the analysis of relevant works on the subject of approaches, methods and notations for representing algorithms and software architecture with highlighting the strengths and weaknesses of solutions, synthesizing the paradigm for the presentation of the program code and qualitatively assessing the effectiveness of each of the provisions of the paradigm (by contradiction method); efficiency is understood as a combination of its three indicators: the number of type I and II errors, the search time and the cognitive stress of the expert. The results obtained: description of the idea and 7 main provisions of the paradigm of the pseudocode language for a unified description of algorithms and architecture with the maximum necessary and minimum sufficient degree of formalization; the main practical significance of the representations of the program code obtained in this way is their intended use for analysis by an information security expert for the presence of medium and high-level vulnerabilities; also, for each position, their qualitative influence on the performance indicators of vulnerability search by an expert was established.


Author(s):  
Ihor Oheruk

Purpose. The purpose of the work is to analyze the application of the second and third parts of Article 3692 of the Criminal Code of Ukraine to officials in the context, that defines them by the Criminal Code of Ukraine in the note to Article 364 of the Criminal Code of Ukraine. Methodology. The methodology includes a comprehensive analysis and synthesis of the available scientific and theoretical material and the formulation of relevant conclusions and recommendations. In the course of the study, the following methods of scientific knowledge were used: terminological, logical-semantic, system-structural, logical-normative. Results: in the course of research the cause of criminalization of such act as "abuse of power" is considered, the subject of the specified criminal act which has the features of "an official" in the context, that defines it by the note to Article 364 of the Criminal Code of Ukraine is analyzed and the main ways of committing criminal acts, that are provided for in this article of the Criminal Code of Ukraine are identified. Originality. The study found, that one of the key conditions for the opportunity to influence officials, that are authorized to perform government or local self-government functions, is the position held by the official and the related opportunities. Therefore, taking into account the opinion of the scientists, that the subject of crimes, that are provided for by the second and third parts of Article 3692 is special, the peculiarities of which is the cumulative feature, that denotes, that such person is not endowed with the status of an official, well-founded need to specify the criminal legislation of Ukraine in terms of the application the second and third parts of Article 3692 of the Criminal code of Ukraine concerning officials in the context, that defines them by the criminal legislation of Ukraine in the note to Article 364 of the Criminal Code of Ukraine. Practical significance. The research results can be used in lawmaking in the improvement of anti-corruption legislation.


2020 ◽  
Vol 23 (10) ◽  
pp. 1182-1194
Author(s):  
A.A. Akhmetzyanov ◽  
A.Yu. Sokolov

Subject. The article focuses on the advanced time-driven tools for allocating overhead expenses, which are based on process-based budgeting. Objectives. We articulate a technique for cost allocation so as to assess the cost of each process with reference to the common time driver. Methods. The study relies upon methods of systematization, classification, analogy and comparison, and summarizes the scientific literature on the subject. Results. The article presents our own suggestions on implementing TD-ABC and TD-ABB into the strategic management accounting process of developer companies. The principles were proved to help more effectively allocate overhead expenses and assess the capacity load of each process performed by functions, departments and employees. Carrying out a comparative analysis, we found certain reserves for utilizing resources more effectively. Conclusions and Relevance. The findings are of scientific and practical significance and can be used by developer and construction businesses. The conclusions can prove helpful for scientific papers, student books, and further research.


2000 ◽  
Vol 421 ◽  
pp. 1-14 ◽  
Author(s):  
HERBERT E. HUPPERT

George Batchelor was one of the giants of fluid mechanics in the second half of the twentieth century. He had a passion for physical and quantitative understanding of fluid flows and a single-minded determination that fluid mechanics should be pursued as a subject in its own right. He once wrote that he ‘spent a lifetime happily within its boundaries’. Six feet tall, thin and youthful in appearance, George's unchanging attire and demeanour contrasted with his ever-evolving scientific insights and contributions. His strongly held and carefully articulated opinions, coupled with his forthright objectivity, shone through everything he undertook.George's pervasive influence sprang from a number of factors. First, he conducted imaginative, ground-breaking research, which was always based on clear physical thinking. Second, he founded a school of fluid mechanics, inspired by his mentor G. I. Taylor, that became part of the world renowned Department of Applied Mathematics and Theoretical Physics (DAMTP) of which he was the Head from its inception in 1959 until he retired from his Professorship in 1983. Third, he established this Journal in 1956 and actively oversaw all its activities for more than forty years, until he relinquished his editorship at the end of 1998. Fourth, he wrote the monumental textbook An Introduction to Fluid Dynamics, which first appeared in 1967, has been translated into four languages and has been relaunched this year, the year of his death. This book, which describes the fundamentals of the subject and discusses many applications, has been closely studied and frequently cited by generations of students and research workers. It has already sold over 45 000 copies. And fifth, but not finally, he helped initiate a number of international organizations (often European), such as the European Mechanics Committee (now Society) and the biennial Polish Fluid Mechanics Meetings, and contributed extensively to the running of IUTAM, the International Union of Theoretical and Applied Mechanics. The aim of all of these associations is to foster fluid (and to some extent solid) mechanics and to encourage the development of the subject.


Author(s):  
D. Naranova

To consider the main directions and extent of influence of ethical groups on political processes in the Republic of Kalmykia.The authors analyzed scientific research on the ethnic identity of the Kalmyk people, as well as media materials and statistical data on the cause and effect of the influence of ethnic groups on regional policy. Seven key areas of influence of the Kalmyks, as a titular nation, on political processes in the region, including through the formation of an ethnic majority among senior positions in the authorities of the subject of the Russian Federation, were identified. The theoretical significance of the study is due to the complex systematization of facts about the influence of the ethnodominating nation of the Republic of Kalmykia on political processes in the region. The practical significance is expressed in the proposal of specific recommendations for partial stabilization of the situation in the Republic.


2021 ◽  
pp. 111-117
Author(s):  
N. Rudenko-Kraievska

The article for the first time examines the scenographic projects of Tetiana Medvid, which were created during the 70–90s of the XX century, in the theaters of Ukraine, with different directors, but united by one artistic technique — the creation of scenographic characters in the form of figural, architectural and textural elements of the stage scenery, which act as separate material characters and reveal the idea of the play. The purpose of the article is to find out the function of scenographic characters — created by figural, architectural and textural elements of stage scenery in the creative works of Tetiana Medvid within the system of effective scenography in terms of creating a visual image of the play. The subject of research — scenographic projects of Tetiana Medvid: “Threepenny Opera” by B. Brecht (1975), “Living Corpse” by L. Tolstoy (1975), “Do not shoot at white swans” by B. Vasilyev (1977), “Interrogation” by S. Rodionov, D. Liburkin (1979), G. Ibsen’s “Hedda Gabler” (1993), “In the Labyrinth” by V. Vynnychenko’s play “Nailed” (1996), “Christian’s Dreams” by H. Ch. Andersen, “Ole Lukoje” (1995), “Tartuffe” by Moliere (1999) on the stage of the Taras Shevchenko Kharkiv Academic Ukrainian Drama Theatre; and “Caligula” by Albert Camus (1998) at the Donetsk National Academic Ukrainian Musical and Drama Theatre named after Artem. Research methodology — use of the method of primary sources, conceptual analysis, the method of theoretical generalization. Results. It is determined that the main expressive element of most scenographic projects of T. Medvid were scenographic characters of different typological series, in particular characters in the form of figural, architectural and textural elements of stage scenery, and the basis of Tetiana Dmytrivna’s work were the principles of visual directing: idea, thought. Novelty. For the first time in Ukrainian art history, one of the typological series of the main means of expression of the outstanding scenographer — T. Medvid — was analyzed and systematized, namely — scenographic characters in the form of figural, architectural and textural elements of stage scenery. The practical significance lies in the possibility of using the presented information in scientific researches of art and theater studies, as well as collected and meaningful factual and illustrative material has the opportunity to become an integral part in further study of the work of scenographers of Ukraine.


2019 ◽  
pp. 96-106
Author(s):  
Tetiana Petrova

The aim of the research is to determine the theoretical and practical significance of the reviews on natural sciences terminology dictionaries. The object of the research is a system of parametric measurements of terminology dictionaries, the subject is critical remarks on the structural parameters representation of terminology dictionaries. The research material is the texts of the reviews published during the late XXth and the early XXIst centuries. Тhe following methods were used: lexicographic analysis of the dictionary parameters, the quantitative analysis and the comparative one. As a result of the research, it is determined that throughout the analyzed period the experts focus on definition and translation dictionaries as well as reference dictionaries. Most remarks are made to the dictionaries of the early XXIst century. The potential importance of practical application of the results is to improve the theoretical and methodological principles and means of terminology dictionaries creation, as well as their use to develop new (combined) type that comprehensively represent the vocabulary of a particular branch of science. Conclusions: 1) the critical comments on professional definition dictionaries relate to such of their parameters as: ‘introduction / preface’, ‘encyclopedia information’, ‘dictionary register’, ‘definition’, ‘list of references’; 2) translation definition dictionaries have quantitative drawbacks regarding the representation of such structural parameters: ‘dictionary register’, ‘translation area’, ‘definition’; 3) to the parameters of reference dictionaries the following critical comments are made: to replace the title loan term by the normative term; to add the ‘accent characteristic’ parameter; to match the title terms with their definitions etc. Theoretical and practical significance of the reviews on terminology dictionaries gives the possibility to systematize the drawbacks revealed by critics in the representation of structural parameters of such publications, for the purpose to improve the fundamental theoretical and methodological foundations of metaterminography and the practical realization of high-quality works.


2020 ◽  
Vol 6 (6) ◽  
pp. 42-51
Author(s):  
V. S. Plotnikov ◽  
O. V. Plotnikova

The article is devoted to the problem of accounting reflection of rental relations, which has been the subject of discussion by professional accountants for more than 100 years. At present, more standards are devoted to this problem in world practice than to other accounting objects. Nevertheless, a number of issues remain unresolved. The methodological framework of the study is based on a comparative description of the provisions of IFRS 16 “Leases” and FSBU 25/2018 “Accounting for Leases” and includes a new institutional theory, Conceptual framework for the presentation of financial statements. The research methodology provides for the reclassification of balance sheet items, which allows for significant structural information regarding the reflection of rental objects. The analysis revealed the following differences in standards: the Russian FSBU 25/2018 unreasonably introduces accounting for leasing transactions into the financial lease accounting system; insufficiently convincingly and without proper evidence the issues of identification of financial lease accounting objects are covered. The prospective direction of accounting for financial leases is the possibility of reflecting the property transferred by the lessee as an element of the cost of financial capital, at the same time, the tenant’s long-term obligations should be recognized as existing obligations. The practical significance of the study is determined by the possibility of reducing the level of debt in the balance of the parties to the lease transaction.


2020 ◽  
Vol 1 (3) ◽  
pp. 284
Author(s):  
Josua Alfiandi Sinuhaji

Digital imagery is currently very widely used, so it is very vulnerable to data theft by unauthorized parties. In order to maintain the security of digital images can be done by using cryptographic techniques. Cryptographic techniques can encode digital images by encrypting them in the form of passwords that are not understood. ICE is a block cipher published by Kwan in 1997. This algorithm has a structure similar to DES, but with additional bit permutations that do not depend on the key in the rotation function. There are various types of ICE variants, namely Thin-ICE, ICE standard, and ICE-n. The difference between the three is the length of the keyword used and the number of rounds. The Thin-ICE algorithm uses 64 bits and 8 turns. The ICE standard uses 64 bits and 16 round keys. The ICE-n algorithm uses keys 64n bits and 16n turns. The use of this type of algorithm can be adjusted to the needs of users where Thin-ICE has the lowest level of security among the three, while ICE-n is the highest. This algorithm does not become the subject of a patent and the source code can be used freely.Keywords : Cryptography, Digital Image,Algorithm,ICE.


Author(s):  
Marco Konersmann ◽  
Michael Goedicke

AbstractAs software architecture is a main driver for the software quality, source code is often accompanied by software architecture specifications. When the implementation is changed, the architecture specification is often not updated along with the code, which introduces inconsistencies between these artifacts. Such inconsistencies imply a risk of misunderstandings and errors during the development, maintenance, and evolution, causing serious degradation over the lifetime of the system. In this chapter we present the Explicitly Integrated Architecture approach and its tool Codeling, which remove the necessity for a separate representation of software architecture by integrating software architecture information with the program code. By using our approach, the specification can be extracted from the source code and changes in the specification can be propagated to the code. The integration of architecture information with the code leaves no room for inconsistencies between the artifacts and creates links between artifacts. We evaluate the approach and tool in a use case with real software in development and with a benchmark software, accompanied by a performance evaluation.


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