Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki最新文献_第3页

Method of Achieving the Goal on a Graph Model with Two Quality Criteria 具有两个质量标准的图模型目标实现方法

Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki Pub Date : 2023-08-29 DOI: 10.35596/1729-7648-2023-21-4-84-92

S. V. Chebakov, L. V. Serebryanaya

{"title":"Method of Achieving the Goal on a Graph Model with Two Quality Criteria","authors":"S. V. Chebakov, L. V. Serebryanaya","doi":"10.35596/1729-7648-2023-21-4-84-92","DOIUrl":"https://doi.org/10.35596/1729-7648-2023-21-4-84-92","url":null,"abstract":"The features of the construction and application of graph models for solving applied problems are considered. A graph model with two quality criteria is proposed, on which the search for optimal paths between given graph vertices is performed. Each edge of the graph has a weighting factor that determines the number of time unitsrequired to pass this edge. Each vertex can be in one of two states: “open” or “locked”. Initially, all vertices are open, but their states may change in the process of problem solving. The search for a solution is limited by a given time. If during the movement along the chosen route the graph vertices become blocked, it is necessary to look for alternative ways to achieve the goal. A method for constructing a Pareto set from which admissible paths are selected is proposed. The notion of an admissible path on a graph is defined. A procedure for choosing a path from the Pareto set has been developed. Upon completion of the choice, the path is considered optimal for follo wing it from the initial vertex to the target. Situations that can occur in the process of choosing a path and passing along it are presented. Based on the selection procedure, an algorithm for finding optimal paths bet ween given vertices on a graph model has been developed.","PeriodicalId":33565,"journal":{"name":"Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42379777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Use of Cable Vibration Isolators for Vibration Protection of Quartz Generators 电缆隔振器在石英发生器振动保护中的应用

Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki Pub Date : 2023-08-29 DOI: 10.35596/1729-7648-2023-21-4-63-70

V. N. Kiyko, N. Naumovich, M. Davydov, V. Zhuravliov

{"title":"Use of Cable Vibration Isolators for Vibration Protection of Quartz Generators","authors":"V. N. Kiyko, N. Naumovich, M. Davydov, V. Zhuravliov","doi":"10.35596/1729-7648-2023-21-4-63-70","DOIUrl":"https://doi.org/10.35596/1729-7648-2023-21-4-63-70","url":null,"abstract":"Vibration isolators with damping properties of steel multiwire cables for vibration protection of quartz oscillators have been studied. Modeling of vibration characteristics of structural elements was carried out using numerical methods. The elastic characteristics and design parameters of the cable for the vibration isolator are calculated. A harmonic analysis was carried out with given values of mass and stiffness under the influence of external vibrations. A sample of a cable vibration isolator has been developed and manufactured. To verify the calculated results obtained, the structure of the test bench is proposed, which allows determining the values of na tural re sonant frequencies. The study of the dependence of vibration acceleration on the frequency of oscillations with a disturbing effect according to the sinusoidal and random laws with a variable frequency in the range of 10–2000 Hz was carried out. Tests of the cable vibration isolator have shown the effectiveness of vibration suppression for frequencies above 120 Hz. In the lower range of random vibrations, various resonances have a significant effect on each other. The experiments confirmed the simulation results and the effectiveness of the solution used: the difference in indicators in determining the resonant frequencies was less than 10 % with a decrease in the vibration level to a given indicator.","PeriodicalId":33565,"journal":{"name":"Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42762647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Decision-Making Based on a Conditional Fuzzy Measure 基于条件模糊测度的决策

Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki Pub Date : 2023-08-29 DOI: 10.35596/1729-7648-2023-21-4-76-83

O. German, J. German, S. A. Migalevich, M. V. Kuznetsov

{"title":"Decision-Making Based on a Conditional Fuzzy Measure","authors":"O. German, J. German, S. A. Migalevich, M. V. Kuznetsov","doi":"10.35596/1729-7648-2023-21-4-76-83","DOIUrl":"https://doi.org/10.35596/1729-7648-2023-21-4-76-83","url":null,"abstract":"The application of a conditional logical formula of three-valued calculus in the decision-making system is considered. A conditional logical formula makes it possible to determine a conditional fuzzy measure on its basis, which is associated with the following positive aspects. First, there is no need for expert evaluation of the fuzzy measure of the truth of the conclusion for fuzzy premises, which reduces the degree of subjectivity and eliminates the need to ensure the completeness of statistical data, as well as the justification of completeness. Secondly, the proposed version of calculating conditional conclusions relatively simply allows for a multi-premise case and the ability to evaluate the importance of premises based on their priorities (in classical approaches like Mamdani, premises do not differ in their degree of importance for conclusions). Thirdly, there is no needto eva luate the degree of truth of the rules themselves for fuzzy conclusions. These advantages simplify practical use and ultimately improve the quality of decisions made, especially in the case of a large number of inputs (for exam ple, numbered in tens). An example of the practical use of the approach developed on the basis of a fuzzy conditional measure for making decisions about the correction of the learning process based on the testing results is given.","PeriodicalId":33565,"journal":{"name":"Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41472787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mathematical Model of VPN in a Special Purpose Telecommunication Network 专用电信网络中VPN的数学模型

Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki Pub Date : 2023-08-29 DOI: 10.35596/1729-7648-2023-21-4-93-100

S. S. Vrublevsky, E. V. Mashkin, A. A. Bysov

引用次数: 0

Simulation of Magnetotargeting of Medicines Based on the Calculation of Permeability of Human Tissues by the Electromagnetic Field 基于电磁场计算人体组织磁导率的药物磁靶向模拟

Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki Pub Date : 2023-08-29 DOI: 10.35596/1729-7648-2023-21-4-118-123

A. V. Churakov, P. V. Kamlach, A. I. Ongarbayeva

{"title":"Simulation of Magnetotargeting of Medicines Based on the Calculation of Permeability of Human Tissues by the Electromagnetic Field","authors":"A. V. Churakov, P. V. Kamlach, A. I. Ongarbayeva","doi":"10.35596/1729-7648-2023-21-4-118-123","DOIUrl":"https://doi.org/10.35596/1729-7648-2023-21-4-118-123","url":null,"abstract":"Analysis of studies in the field of targeted delivery of drugs, genes and stem cells showed a low level of accuracy of both applied and practical research in this area. Sufficiently encouraging results were obtained with extracorporeal electromagnetic action on a pharmacological complex with a ferromagnetic nanoparticle. With this approach, it is rather difficult to implement the algorithm for introducing the drug into the topographic region (target organ), since in practice, approaches to the clinical application of drug transport technology, taking into account the physicochemical properties of human body tissues, have not been studied in detail. The available models represent various physical and mathematical approaches that do not take into account the bioelectrical and electrostatic properties of the tissues of the organisms of experimental animals and humans. The creation of algorithms and software simulation of this technology will allow calculating variable frequency variables for magnetotargeting in a human digital phantom, which will reduce time spent at the stage of pilot and clinical trials and in the future will form the applied part of the innovative technology. The article presents the methodology and results of multiphysics and mathematical modeling in the Sim4Life for Science, V7.0 package on the example of calculating the control parameters of the electromagnetic field of the region in the area of normal administration of drugs – the vessels of the forearm.","PeriodicalId":33565,"journal":{"name":"Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49053673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First-Principles Modelling of the Properties of Graphene Modified with Fluorine Atoms 氟原子修饰石墨烯性质的第一性原理建模

Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki Pub Date : 2023-08-29 DOI: 10.35596/1729-7648-2023-21-4-71-75

V. N. Mishchanka

引用次数: 0

Promising Smart Materials for Radioelectronics 有前途的无线电电子智能材料

Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki Pub Date : 2023-08-28 DOI: 10.35596/1729-7648-2023-21-4-5-11

V. Bogush, A. Gusinsky, V. Karpovich, N. Pevneva, V. Rodionova, M. M. Kasperovich, I. Kashko, D. Grapov, Yu. M. Kukut’, V. Labunov

引用次数: 0

Temperature Dependence of 3С-SiC Growth During Rapid Vacuum Thermal Silicon Treatment 快速真空热硅处理过程中3С-SiC生长的温度依赖性

Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki Pub Date : 2023-08-28 DOI: 10.35596/1729-7648-2023-21-4-12-18

M. V. Labanok, P. Gaiduk

引用次数: 0

Model of the Formation of a Fixed Charge in SiO2, Produced by Thermal Oxidation of Silicon 硅热氧化产生的SiO2中固定电荷的形成模型

Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki Pub Date : 2023-08-28 DOI: 10.35596/1729-7648-2023-21-4-28-32

U. Pilipenka, H. A. Amelchanka

{"title":"Model of the Formation of a Fixed Charge in SiO2, Produced by Thermal Oxidation of Silicon","authors":"U. Pilipenka, H. A. Amelchanka","doi":"10.35596/1729-7648-2023-21-4-28-32","DOIUrl":"https://doi.org/10.35596/1729-7648-2023-21-4-28-32","url":null,"abstract":"Solid-state recrystallization of the surface silicon layer after chemical and mechanical polishing with application of fast thermal treatment by pulses of one second duration is one of the feasible methods of improving the silicon surface properties. The purpose of this work is to explore the impact of fast thermal treatment resulting in solid state recrystallization of mechanically disrupted layer on generation of fixed charge in SiO2 at thermal oxidation of silicon. The results of studying P-doped electron silicon (KEF 4.5) and B-doped hole silicon (BDS 12) hole-type silicon of orientation <100> diameter 100 mm after chemical and mechanical polishing are provided. By the method of voltage-capacitance characteristic the flat zones voltage and charge density on the boundary of “silicon – silicon dioxide” were determined and by the method of scanning probe electrometry the surface distribution of these characteristic prior and after fast thermal treatment was determined. It has been ascertained that fast thermal treatment on silicon wafers KEF 4.5 and BDS 12 of orientation <100> due to solid state recrystallization of mechanically disrupted layer shall bring about 1.5 times decrease in surface potential along wafers area and residual fixed charge in silicon dioxide.","PeriodicalId":33565,"journal":{"name":"Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43743281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Formation of Diamond-Like Carbon Coatings by Chemical Deposition in High Density Plasma 高密度等离子体化学沉积类金刚石涂层的研究

Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki Pub Date : 2023-08-28 DOI: 10.35596/1729-7648-2023-21-4-33-39

N. V. Leonovich, P. D. Tovt, D. Kotov

{"title":"Formation of Diamond-Like Carbon Coatings by Chemical Deposition in High Density Plasma","authors":"N. V. Leonovich, P. D. Tovt, D. Kotov","doi":"10.35596/1729-7648-2023-21-4-33-39","DOIUrl":"https://doi.org/10.35596/1729-7648-2023-21-4-33-39","url":null,"abstract":"A developed technological reactor for the formation of a diamond-like carbon coating on substrates up to 200 mm in diameter by chemical vapor deposition in high-density inductively coupled plasma at an operating pressure below 5 Pa is described. The results of experimental studies on obtaining a diamond-like carbon coating in the developed reactor are presented. The dependences of the rate of deposition of a diamond-like carbon coating on the power of the RF discharge, the operating pressure, and the consumption of the film-forming gaseous reagent have been established. Also, for the developed technological reactor, the modes for obtaining diamond-like carbon coatings with the best mechanical properties were established with the following process parameters: RF power 600–900 W, precursor gas flow rate 15–50 cm3/min, the ratio of plasma-forming gas volumes to film-forming gas volume 3:1 at a residual pressure in the working chamber of not more than 4 Pa. It has been shown by Raman spectroscopy that the coatings obtained under efficient conditions contain a significant amount of a diamond-like phase.","PeriodicalId":33565,"journal":{"name":"Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46814397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0