scholarly journals GEOMECHANICAL REGULATIONS FOR THE SELECTION OF ELEMENT BASE PARAMETERS AND THEIR IMPLEMENTATION IN TECHNICAL SOLUTIONS

2021 ◽  
pp. 33-63
Author(s):  
Eugene V. Ignatov ◽  
Maxim A. Tyulenev
Keyword(s):  
Base Parameters ◽  
Technical Solutions ◽  
Element Base ◽  
Selection Of

COMBINATORIAL POLYNOMIALLY COMPUTABLE CHARACTERISTICS OF SUBSTITUTIONS AND THEIR PROPERTIES

2020 ◽  
Vol 7 (2) ◽  
pp. 34-41
Author(s):  
VLADIMIR NIKONOV ◽  
◽  
ANTON ZOBOV ◽  
Keyword(s):  
Mathematical Expectation ◽  
Point Of View ◽  
Small Range ◽  
Computational Point ◽  
Wide Range ◽  
Bijective Function ◽  
The Difference ◽  
Element Base ◽  
Selection Of

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.

scholarly journals Ламинарная обмотка тороидального поля для термоядерной электростанции типа Токамак

2021 ◽  
Vol 91 (12) ◽  
pp. 2018
Author(s):  
Д.С. Дежин ◽  
Е.Ю. Клименко
Keyword(s):  
Power Plant ◽  
Cost Reduction ◽  
Power Plants ◽  
Toroidal Field ◽  
Coil Design ◽  
Capital Costs ◽  
Routine Service ◽  
Operating Current ◽  
Technical Solutions ◽  
Selection Of

There are described some alternatives to traditional technical solutions used in the designs of experimental Tokamak thermonuclear installations. The proposals must significantly reduce capital costs of the construction of toroidal field windings for thermonuclear power plants of this type. Cost reduction may be achieved by choosing a coil design that excludes degradation of the properties of a superconducting cable, significant simplifications of the cable design, cooling the winding with thermosyphon, avoiding the occurrence of high voltages due to using a quench back method for the winding protection, A procedure is described for the reliable selection of the operating current of the cable and the maximum permissible values of the electric field in it. It is considered also a facility of access to the thermonuclear unit of the power plant for routine service without dismantling the toroidal field winding and its vacuum shell.

scholarly journals Modeling of asynchronous motor operation modes for the correct selection of voltage regulation devices

2020 ◽  
Vol 178 ◽  
pp. 01015 ◽  
Author(s):  
Azat Akhmetshin ◽  
George Marin ◽  
Dmitrii Mendeleev
Keyword(s):  
Voltage Drop ◽  
Asynchronous Motor ◽  
Electric Circuit ◽  
Voltage Regulation ◽  
Correct Selection ◽  
Voltage Level ◽  
Nominal Voltage ◽  
Motor Operation ◽  
Technical Solutions ◽  
Selection Of

Many electrical appliances are used in production and in everyday life, which include elements that are extremely sensitive to voltage deviations from acceptable values. Failure in their work can cause equipment failure or a breakdown in technological processes. There are a number of technical solutions to solve this problem, one of which is the using of voltage control devices such as boost transformers. The principle of operation of booster transformers is the introduction of a longitudinal EMF into the electric circuit, which provides booster. The choice of voltage regulation devices consists in determining its power and the required transformation ratio. The latter needs some justification, because it cannot be formally accepted: if it is necessary to increase the voltage, for example by 5%, it is enough to introduce a longitudinal EMF of 5% of the nominal voltage into the electric circuit. This is due to the fact that with increasing voltage from the load side, the power consumption also increases, which causes an increase in voltage drop compared to modes in the absence of voltage regulation devices. Thus, the load will receive a slightly lower voltage level in comparison with the desired one.

scholarly journals Analysing the Selection of Appropriate Technical Solutions for Nurses in a Clinical Setting

2021 ◽  
Author(s):  
Nicole Hechtel ◽  
Jörn Krückeberg ◽  
Maria Sebastião ◽  
Ronny Klawunn
Keyword(s):  
Nursing Staff ◽  
Clinical Setting ◽  
Participatory Approach ◽  
Professional Nursing ◽  
Technical Solutions ◽  
Selection Of

This work focuses the selection of technical solutions for professional nursing in a clinical setting. For a participatory approach the needs of the nursing staff are queried and analysed. Supplemented by data of patients a baseline for the selection of technical solutions is created.

Algorithms and Methods for Induction Motors Performance Research Based on Testing Automation

2021 ◽  
Vol 26 (1) ◽  
pp. 84-91
Author(s):  
Ya.O. Teplova ◽  
Keyword(s):  
Energy Efficiency ◽  
Induction Motors ◽  
General Purpose ◽  
Electrical Machines ◽  
Motor Efficiency ◽  
Target Energy ◽  
Automated Tools ◽  
Technical Solutions ◽  
Performance Research ◽  
Selection Of

New electrical machines design assumes the execution of research and test-design works with a choice and selection of the effective technical solutions. The prototypes characteristics control is implemented by testing them in laboratory using the automated tools and methods. The automation provides relevant datasets for further analysis. In the paper the algorithms and methods for studying the general purpose induction motors performance characteristics have been proposed. The changes of dependence of the motor efficiency on the output power alterations, caused by using different technical solutions, have been studied. Based on experience of the electrical machines testing in a specialized laboratory, the task of evaluating the induction motors energy efficiency when operating in S1 mode (continuous duty) with overloads occurrence, has been formulated. A method for solving the problem based on the efficiency curves has been proposed. The results have been implemented in a computer program and can be used to improve the technical solutions, allowing an achievement of the target energy efficiency indicators.

The E39 Bjørnafjord crossing, development and selection of bridge concept

2021 ◽  
Author(s):  
Svein Erik Jakobsen ◽  
Per Norum Larsen ◽  
Sverre Wiborg ◽  
Anette Fjeld ◽  
Jon Solemsli ◽  
...  
Keyword(s):  
Parametric Excitation ◽  
Technical Challenge ◽  
The World ◽  
Ship Collision ◽  
Technical Solutions ◽  
Selection Of

<p>The distance between Norway’s second and fourth largest cities, Bergen and Stavanger, is only 150 km. The E39 link between the cities involves as per today several ferry connections, therefore the planning of a fixed connection with bridges and subsea tunnels has been going on for some years. A major technical challenge is the crossing of Bjørnafjord, since the fjord at this site is about 5000m wide and 500m deep.</p><p>This paper describes the development of technical solutions to cross the Bjørnafjord, and the evaluation and challenges met in the different stages of the project until a preferred solution was reached in 2019. Advanced analyses and evaluations have been performed to cope with challenges like wave/wind/current interactions, ship collision, parametric excitation and subsea landslides. The work performed will provide a major contribution to future largescale strait crossings in the world.</p>

Mechanical treatment of wastewater

2021 ◽  
pp. 46-49
Author(s):  
В. Браннер ◽  
Д.А. Калачев
Keyword(s):  
Wastewater Treatment ◽  
Mechanical Treatment ◽  
Two Dimensional ◽  
Retention Efficiency ◽  
One Dimensional ◽  
New Construction ◽  
Treatment Facilities ◽  
Technical Solutions ◽  
Efficiency And Reliability ◽  
Selection Of

Подбор оборудования для механической очистки сточных вод является важным этапом при реконструкции или новом строительстве очистных сооружений, который определяет их эффективность и надежность с точки зрения технологии и эксплуатации. Приведены примеры распространенных на данный момент технических решений по конструкции фильтрующего полотна решеток для механической очистки сточных вод. Дано сравнение эффективности данных решений. На основе исследования очистных сооружений в Германии представлено сравнение эффективности задержания отбросов в зависимости от применяемого ранга фильтрации: двумерной (перфорация) и одномерной (прозор). The selection of equipment for mechanical wastewater treatment is an important stage in the reconstruction or new construction of the treatment facilities that determines their efficiency and reliability in terms of the technology and operation. The examples of the currently widespread technical solutions for designing filtering cloth of the screens for mechanical wastewater treatment are given. The effectiveness of these solutions is compared. On the basis of studying wastewater treatment facilities in Germany, a comparison of the debris retention efficiency depending on the applied filtration grade, i. e., two-dimensional (perforation) and one-dimensional (bar spacing) is presented.

scholarly journals Ergonomic Factors in Patenting Computer Systems for Personnel's Selection and Training

2020 ◽  
pp. short51-1-short51-8
Author(s):  
Valery Spasennikov ◽  
Kirill Androsov ◽  
Galina Golubeva
Keyword(s):  
Expert Evaluation ◽  
Selection Methods ◽  
Patent Search ◽  
Radar Systems ◽  
Remotely Piloted Aircraft ◽  
Composition Structure ◽  
Computer Simulators ◽  
Technical Solutions ◽  
And Training ◽  
Selection Of

The authors identify ergonomic factors related to the composition, structure and typical functions in the process of taking into account the criteria for the protection of inventions when patenting technical solutions in the field of professional selection and training of operators and drivers of military and civil man-machine complexes. The article describes the ergonomic capabilities of selection methods and devices, technical results from the introduction of virtual, hardware-software and computer simulators for training welders, locomotive drivers, radar systems' operators, operator of remotely piloted aircraft, vehicles' mechanics-drivers. For the selection of patents in subclasses of inventions, criteria for expert evaluation of their ergonomics were first proposed based on such criteria as manageability, serviceability and usability.in total, three experts were involved, and the consistency of the solution (the concordance coefficient) during selection was w=0.67. In advanced research related to the construction of automated patent search systems, it is necessary to develop decisive rules for the selection of inventions. The authors of the article plan to develop criteria for the ergonomics of selected inventions for further analysis of promising systems for selecting and training specialists in such IPC categories as G09B9/00, G06F15/20 and A61B5/16.

Experience with and proposals for selection of technical solutions in developing and retrofitting deaeratorless thermal circuits of modern power units

2009 ◽  
Vol 56 (10) ◽  
pp. 888-891 ◽  
Author(s):  
N. N. Trifonov ◽  
Yu. G. Sukhorukov ◽  
V. F. Ermolov ◽  
E. V. Kovalenko
Keyword(s):  
Technical Solutions ◽  
Selection Of
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