scholarly journals METHODICAL APPROACHES TO COMPLEX SANITARY AND HYGIENIC EVALUATION OF WELDING TECHNOLOGIES AND MATERIALS BASED ON MATHEMATICAL MODELING

2021 ◽  
Vol 37 (1) ◽  
pp. 3-8
Author(s):  
O. Levchenko ◽  
O. Kruzhilko ◽  
Yu. Polukarov

The purpose of this article is to develop methodological approaches to a complex sanitary and hygienic assessment of welding materials based on modern methods of mathematical modeling. An ideological structure of a computerized database is proposed, which would allow to collect and edit data on welding materials and welding modes, to systematize them, as well as to display the necessary user information on the screen by processing various requests. The complex of harmful and dangerous factors accompanying welding processes is analyzed. The method of mathematical modeling of the dependence of the intensity of welding aerosol release on the set of technological factors is given and the necessity of its improvement is argued. The urgency of creating an information-analytical system of complex sanitary assessment of welding materials for the selection of optimal, from a hygienic point of view, welding technologies is substantiated. The advantages and disadvantages of the existing developments of information-analytical systems of managerial decision-making in the welded production are given. The structure and conceptual aspects of creating a new database for the computer system of information support of complex sanitary and hygienic assessment of welding technologies and materials, in accordance with modern requirements of the standard DSTU ISO 15011- 4: 2008.

2020 ◽  
Vol 2020 ◽  
pp. 1-14
Author(s):  
Marco Filippo Ferrotto ◽  
Francesco Basone ◽  
Panangiotis G. Asteris ◽  
Liborio Cavaleri

The selection of seismic inputs for nonlinear dynamic analysis is widely debated, mainly focusing on the advantages and disadvantages provided by the choice of natural, simulated, or artificial records. This work proves the differences in the structural behavior of RC buildings when using accelerograms with different levels of stationarity. Initially, nonlinear response under three sets of accelerograms equivalent in terms of pseudo acceleration spectrum is evaluated and compared. Then, the results of incremental dynamic analyses are compared by the statistical point of view considering different levels of irregularity for the reference structure.


2018 ◽  
Vol 37 (1) ◽  
pp. 25-33 ◽  
Author(s):  
MAHBOOBEH PARVARESH DARBANDI ◽  
JAFAR TAHERI

ABSTRACT Sulfur occurs naturally in the earth's crust as a pure element (native sulfur), as well as sulfide and sulfate minerals. From the biochemical point of view, sulfur is a vital element because it is a constituent of enzymes and other key proteins. In addition to modern uses of minerals, in old Iranian documents of traditional medicine, attention was paid to physico-chemical properties of minerals and the various methods of administration. In this review, the traditional usage of sulfur and sulfide minerals (e.g. orpiment, realgar and stibnite) and sulfate minerals (e.g. alum, jarosite, epsomite and melanterite) as documented in the Canon of Medicine of Avicenna (also known as Ibn Sina) and the Zakhireh Kharazmshahi of Jorjani, is compared with new findings about the advantages and disadvantages of these minerals in medical geology. The main conditions for the selection of mineral drugs was described first by Avicenna. There is a high correlation between old and modern pharmaceutical practices. The most important results concern the application of alum as a hemostatic agent (to inhibit hemorrhages), the use of jarosite as a method for treating osteoarthritis, the choice of melanterite for treating eczema, killing insects and as an anti-bacterial agent, the use of epsomite as an active ingredient in laxatives, homeostatics and mineral supplements, and the extensive use of sulfur in dermatology for its keratolytic effects and its supposed anti-microbial effects. In this review, newly developed pharmaceutical information about the use and effects on health of sulfide minerals will be compared to traditional pharmaceutical applications.


2021 ◽  
Vol 4 (135) ◽  
pp. 35-42
Author(s):  
Valeriy Mazurenko

The article is devoted to practical aspects of using graphic programming tools in the educational process, and, particularly, to their application for performing laboratory classes in technical disciplines.The unpredictable rapid changing in conditions for providing education process due to coronavirus restrictions have required a new manner of how to conduct teaching in remote mode. This task urgently required to be resolved in the short term. But there were no published sources that contain practical advises and described real experience how to do this. Thus, the presented article is an attempt to close this gap. Due to results presented in the article this task could be resolved by using graphic programming languages that opens a field of possibilities for students in using models to explore properties of a real object by means of simulation of the virtual analog. It is argued the selection of programming system, the variations of beginning lessons are considered, the experience in using such system as Simulink is revealed. The advantages and disadvantages of the selected system are indicated from the point of view of its application to the educational process. There are some recommendations for building the sequence of laboratory classes on the base of graphic programming tools. In the beginning these models could be developed preliminary and delivered for students to explore them and then, with more students’ experience and skills, the models could be created by students themselves. The real experience obtained during on-line education phase demonstrates that this approach increases students’ interest for learning and accelerate the educational process. One more conclusion is that virtual laboratory classes as well as all other achievements in using remote mode of education should be implicated in the educational process when it returns to conventional mode of functioning.


Author(s):  
Ľuboš Polakovič ◽  
Peter Szabó ◽  
György Czifra

Abstract In the management literature is often encountered with the concept of generation. For example, generation X, Y, millennia’s, and so on. In this article we are looking for an answer to what is the generation, as it is characterized from a management point of view. From the management perspective we consider the selection of those parameters that support managerial decision-making in a real situation. Therefore, they are practically applicable. In the first part we examine the correlation between the generations and Kopčaj development cycles. The second part dealt with the appropriateness of certain characteristics and parameters of generations to manage. In the third part we describe briefly the results of the survey of these parameters in the Slovak companies. Conclusions: 1. there is a very strong correlation between the generations and Kopčaj development cycles. This allows to more accurately characterize the generation, its behavior, characteristics and interaction with employers. 2. on the management characteristics of the generation (or any group) are suitable parameters such as potential, knowledge and energy measured by entropy over the conditions of stability. 3. the survey shows that for the successful integration of generation into the company it is necessary to harmonize these parameters.


Author(s):  
Aleksandr Filinskih ◽  
Ilia Zarubin

The article considers the forming a pool of regression tests when using the CI/CD process in the development of information systems consisting of a significant number of interacting modules and using various database management systems. The reasons that do not allow using standard filters of testing management systems to account for possible interactions between modules of the developed information system are indicated. The method of selection of the tests to consider the interaction and potential mutual influence of modules on each other, which also minimizes the pool of selected tests, and rank tests for significance from the point of view of a decision on the correctness of the implementation of the functionality of the information system and the system's readiness for its transfer to the customer. The method of dynamic selection of tests that allow to quickly evaluate changes made to the components of the information system in terms of possible negative impact on the unaffected components and functionality is considered. The advantages and disadvantages of the considered methodology, the necessary conditions for its successful application, and ways to implement it both in new projects for the development of information systems and in existing projects in continuous development and without the possibility of organizing code freezing are given.


1976 ◽  
Vol 14 (3) ◽  
pp. 396
Author(s):  
Robert F. Newby

From practical point of view, the author examines problems which may be encountered in determining the most suitable method of acquisition of exploration and production rights outside of Canada. The paper deals with the evaluation of fiscal and operational considerations, including tax ramifications of alternatives in both Canada and the host country. It deals briefly with practical factors in assessment of the investment climate in the host country; and, it deals extensively with selection of the most appropriate corporate vehicle through which to hold the concession, examining the comparative advantages and disadvantages of branches and subsidiaries with special attention to tax implications.


2021 ◽  
Vol 291 ◽  
pp. 07003
Author(s):  
Galina Fedorova ◽  
Sergey Borisov ◽  
Svetlana Zakharova ◽  
Irina Makarycheva ◽  
Tatyana Rusakova

The article discusses the essence and significance of the decision-making mechanism in business management. Highlighted and given the characteristics of the main components of management decisions, which largely determine the assessment and selection of the optimum strategy for managing the activities of the organization. The assessment of the influence of the internal and external environment of the company both on the process of making a managerial decision and on the quality of the decision itself is given. The stages of the mechanism for making managerial decisions are investigated and, depending on the level of decision making, only the steps are considered that are required to solve the managerial problem. Methods or groups of methods are identified that are most effective at each stage of the process, both on the basis of assessing their advantages and disadvantages, and systematization and generalization of theoretical and practical experience. Studies have shown the dependence of the level of managerial potential, which determines the quality of decisions made, on the managerial level, professional competencies of the manager. It is concluded that it is required to use an integrated approach based on a systematic analysis of the assessment and selection of optimum business management methods at each stage of the business management decision-making process.


Author(s):  
O. Bondar

<p><em>In this study, I have collected and summarized the functional aspects of a literary prize, contest, and rating, which indicate their affiliation with the marketing complex of the publishing house for the first time. For this purpose, I have analyzed and summarized the common concepts of the functioning of literary prizes and contests as advertising tools for publishing activity. Because the previous studies are only focused on the fact of the impact of the prize on the promotion of editions but do not explain it, these aspects have been considered and introduced by me from the book production’s point of view. I investigated that the prizes and the contests in the literary field are effective marketing tools, which meet many publisher’s needs at the same time and can be considered a non-profit form of capital. I have reviewed the works of other authors, who accept that the economic success of the book is rising if the author is a winner of the literary prize or contest. I have found out that the book prize activates the demand for the book, and the literary contest is a tool to track the reader’s reaction to a future publication. In this way, literary prizes and contests can be considered as a way of conducting a marketing dialogue with the target audience. I have focused on the information support of literary national and international prizes and contests by the media, which attracts attention to the book and forms the reader’s interest. The literary prizes and contests are also considered as a way of exploring trends and their changes, familiarization the popular genres among the target audience and fixation the current choice of modern readers. Literary prizes and contests motivate the authors to improve their literary excellence, are the source of new authors and works, and assist in increasing sales of books. However, further research is recommended.</em></p><strong><em>Key words:</em></strong><em> book prize, book rating, literary contest, literary prize, functions of the literary prizes.</em>


2019 ◽  
Vol 16 (2-3) ◽  
pp. 161-179
Author(s):  
Outi Paloposki

The article looks at book production and circulation from the point of view of translators, who, as purchasers and readers of foreign-language books, are an important mediating force in the selection of literature for translation. Taking the German publisher Tauchnitz's series ‘Collection of British Authors’ and its circulation in Finland in the nineteenth and early twentieth century as a case in point, the article argues that the increased availability of English-language books facilitated the acquiring and honing of translators' language skills and gradually diminished the need for indirect translating. Book history and translation studies meet here in an examination of the role of the Collection in Finnish translators' work.


2020 ◽  
Vol 7 (2) ◽  
pp. 34-41
Author(s):  
VLADIMIR NIKONOV ◽  
◽  
ANTON ZOBOV ◽  

The construction and selection of a suitable bijective function, that is, substitution, is now becoming an important applied task, particularly for building block encryption systems. Many articles have suggested using different approaches to determining the quality of substitution, but most of them are highly computationally complex. The solution of this problem will significantly expand the range of methods for constructing and analyzing scheme in information protection systems. The purpose of research is to find easily measurable characteristics of substitutions, allowing to evaluate their quality, and also measures of the proximity of a particular substitutions to a random one, or its distance from it. For this purpose, several characteristics were proposed in this work: difference and polynomial, and their mathematical expectation was found, as well as variance for the difference characteristic. This allows us to make a conclusion about its quality by comparing the result of calculating the characteristic for a particular substitution with the calculated mathematical expectation. From a computational point of view, the thesises of the article are of exceptional interest due to the simplicity of the algorithm for quantifying the quality of bijective function substitutions. By its nature, the operation of calculating the difference characteristic carries out a simple summation of integer terms in a fixed and small range. Such an operation, both in the modern and in the prospective element base, is embedded in the logic of a wide range of functional elements, especially when implementing computational actions in the optical range, or on other carriers related to the field of nanotechnology.


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