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The Design of the Control System of Ignition of the Pipeline with the Use of Waveguide and Microcontroller

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The Design of the Control System of Ignition of the Pipeline...

作者： Fomovskyi volodymyr 兰州交通大学

学位级别：硕士

为了确保不同种易燃危险物体以及延伸管道结构的安全性,本文提出了由超声波导和微控制器建立的管道防火控制系统,并对其可行性进行分析。如今,用于监测泵站外部延伸管道部分的消防安全设备还十分稀少,这正是本研究主要解决的关键问题。... 详细信息

为了确保不同种易燃危险物体以及延伸管道结构的安全性,本文提出了由超声波导和微控制器建立的管道防火控制系统,并对其可行性进行分析。如今,用于监测泵站外部延伸管道部分的消防安全设备还十分稀少,这正是本研究主要解决的关键问题。文中对已有的设备结构进行详细分析与对比后,选定由柔性耐热线制成的超声波导为敏感元件,并使用物理现象驻波作为该监测器的工作原理。本文制定了技术规范,创建了电气结构和电气功能图,并在此基础上,为管道防火控制系统设计了电气原理图。此外,本文在开发该监测系统的过程中计算了各项技术设计指标,并针对元件基座的选择得出印刷电路板上的各元器件的特性。此处,本文选择了最优设计方案,并计算了所设计设备的总尺寸。由于微控制器在本文开发的系统中起着重要作用,本文为该监测器已有的两种操作模式(即监控模式与报警模式)写入算法,并基于该算法,使用C编程语言编写了微控制器的程序代码,已对程序进行检验且已成功编译。在已有信息的基础上,本文还对管道点火控制系统进行了仿真模拟。即使在个别模块的操作参数发生变化的情况下,系统也可以正确运行。与现有的系统相比,本文提出的监测系统在使用过程中将为安装和操作过程节省大量资金。最重要的是,本文系统将各类易燃物体的防火安全水平提高到一个新的高度。

关键词：敏感元件超声波导驻波微控制器印刷线路板

Classification of Images Based on a System of Hierarchical Features

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Computers, Materials & Continua 2022年第7期72卷 1785-1797页

作者： Yousef Ibrahim Daradkeh volodymyr Gorokhovatskyi Iryna Tvoroshenko Mujahed Al-Dhaifallah Department of Computer Engineering and Networks College of Engineering at Wadi AddawasirPrince Sattam Bin Abdulaziz UniversityAl-Kharj11991Saudi Arabia Department of Informatics Kharkiv National University of Radio ElectronicsKharkiv61166Ukraine Control and Instrumentation Engineering Department and Interdisciplinary Research Center(IRC)for Renewable Energy and Power SystemsKing Fahd University of Petroleum&MineralsDhahran31261Saudi Arabia

The results of the development of the new fast-speed method of classification images using a structural approach are *** method is based on the system of hierarchical features,based on the bitwise data distribution for the set of descriptors of image *** article also proposes the use of the spatial data processing apparatus,which simplifies and accelerates the classification *** have shown that the time of calculation of the relevance for two descriptions according to their distributions is about 1000 times less than for the traditional voting procedure,for which the sets of descriptors are *** introduction of the system of hierarchical features allows to further reduce the calculation time by 2–3 times while ensuring high efficiency of *** noise immunity of the method to additive noise has been experimentally *** to the results of the research,the marginal degree of the hierarchy of features for reliable classification with the standard deviation of noise less than 30 is the 8-bit *** costs increase proportionally with decreasing bit *** method can be used for application tasks where object identification time is critical.

关键词： Bitwise distribution computer vision descriptor hierarchical representation image classification keypoint noise immunity processing speed

Synthesis of ferromagnetic La1-xSrxMnO3 nanoparticles by precipitation from diethylene glycol solution and their properties

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Journal of Advanced Ceramics 2016年第3期5卷 197-203页

作者： Yulia SHLAPA Sergii SOLOPAN Oleksandr YELENICH volodymyr TRACHEVSKII Anatolii BELOUS V.I.Vernadsky Institute of General and Inorganic Chemistry NAS of Ukraine32/34 Palladina Avenue 03680 Kyiv 142 Ukraine Technical Center NAS of Ukraine

La1−x Sr x MnO3 nanoparticles were synthesized by precipitation from diethylene glycol solution. Features of synthesis were studied using 1Н, 13С, 139La... 详细信息

La1−x Sr x MnO3 nanoparticles were synthesized by precipitation from diethylene glycol solution. Features of synthesis were studied using 1Н, 13С, 139La nuclear magnetic resonance (NMR) investigations. The obtained results showed that the complexation reaction between diethylene glycol and metal cations takes place during the synthesis. These complexes decomposed at 200 °C and an amorphous precursor (La,Sr)MnO3 was formed. According to X-ray results, the crystallization of the perovskite structure began at 600 °C and finished at 800 °C. Microstructural studies showed that obtained nanoparticles are weakly agglomerated and have small sizes. Based on these nanoparticles, magnetic fluid was prepared which was effectively heated under an alternating magnetic field.

关键词： manganite perovskite precipitation complexation reaction diethylene glycol nuclear magnetic resonance (NMR)

On ring and bubble formations in heavy ion collisions

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Nuclear Science and Techniques 2013年第5期24卷 76-81页

作者： CHEREVKO Kostyantyn SU Jun BULAVIN Leonid SYSOEV volodymyr ZHANG FengShou College of Nuclear Science and Technology Beijing Normal University Beijing Radiation Center Physics Department Taras Shevchenko National University of Kyiv4Glushkova av. Center of Theoretical Nuclear Physics National Laboratory of Heavy Ion Accelerator of Lanzhou

The work is devoted to the implementation of the hydrodynamic laws to the head-on heavy ion collisions within the energy range 50-100 MeV/*** hydrodynamic mechanisms of the bubble and ring structures formation are *** is shown that there is a possible hydrodynamic explanation of the different structures being formed in the case of soft(K=200 MeV) and stiff(K=400 MeV) equations of *** the suggested approach the final geometry of the system is defined in the initial stage of the collision and is very dependent on the sound velocity in the nuclear *** obtained results are in a good correspondence with the Boltzmann-like transport theory calculations and the experimental data for the selected energy range.

关键词：重离子碰撞泡沫形成环和流体力学能量范围动力学机制动力学解释法律实施

Belgica antarctica(Diptera: Chironomidae): A natural modelorganism for extreme environments

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Insect Science 2022年第1期29卷 2-20页

作者： Iryna Kozeretska Svitlana Serga Pavlo Kovalenko volodymyr Gorobchyshynand Peter Convey National Antarctic Scientific Center of Ukraine 01601Taras Shevchenko blv.16KyivUkraine Taras Shevchenko National Universityof Kyiv Department General and Medical Genetics01601Volodymyrska str.64/13KyivUkraine State Institution«Institute for Evolu-tionary Ecology of the National Academy of Sciences of Ukraine» Department of Population Dynamics03143Lebedeva str.37KyivUkraine and4British Antarctic SurveyNERCHigh CrossMadingley RoadCambridge CB30ETUnited Kingdom

Belgica antarctica(Diptera:Chironomidae),a brachypterous midge endemicto the maritime Antarctic,was first described in *** more than a century of study,a vast amount of information has been compiled on the species(3750000 Google searchresults as of January 10,2021),encompassing its ecology and biology,life cycle and re-production,polytene chromosomes,physiology,biochemistry and,increasingly,***2014,***’s genome was sequenced,further boosting *** develop-mental stages can be cultured successfully in the *** together,this wealthof information allows the species to be viewed as a natural model organism for studies ofadaptation and function in extreme environments.

关键词： Belgica antarctica Chironomidae stress adaptation Antarctica

One-pot Synthesis and X-ray Structure Determination of 7-(Diethylamino)-3-(4-aminophenyl)coumarin

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Chinese Journal of Structural Chemistry 2015年第12期34卷 1841-1844页

作者： KULAI Ihor MALLET-LADEIRA Sonia KOVTUNENKO volodymyr VOITENKO Zoia IMRCP CNRS UMR 5623 University of Toulouse Department of Chemistry Taras Shevchenko National University of Kyiv ICT FR CNRS 2599 University of Toulouse

7-（Diethylamino）-3-（4-aminophenyl）coumarin has been synthesized in a new one-pot synthesis by a three-step process starting from 4-（diethylamino）salicylaldehyde and 4-nitrophenylacetonitrile. The product was obtained in a good yield with a high degree of purity and characterized by NMR, IR and HR-MS. The orange crystals of the title compound were grown from ethyl acetate solution. The solid state structure was established by X-ray crystallography analysis. The crystal belongs to the orthorombic system, space group Pccn with a = 11.1095（5）, b = 33.0187（15）, c = 17.2865（7） A, V= 6341.1（5） A3, C19H20N2O2, Mr = 308.37, ρcalc = 1.292 g·cm^-3, = 0.085 mm^-1, F（000） = 2624, the final R = 0.0480 and wR = 0.1265 （I〉 2σ（I））.

关键词： coumarin dye crystal structure fluorescence one-pot synthesis

A method for optimization of time intervals between rolling cuts on sorting humps

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Journal of Modern Transportation 2018年第3期26卷 189-199页

作者： Dmytro Kozachenko volodymyr Bobrovsky Yevhen Demchenko Research and Development Department Dnipropetrovsk National University of Railway Transport Named After Academician V.LazaryanDnipro 49010Ukraine Stations and Junctions Department Dnipropetrovsk National University of Railway Transport Named After Academician V.LazaryanDnipro 49010Ukraine

Sorting humps are the main technical means providing the breaking- and making-up of freight trains. Automation of sorting process by implementing microprocessor control systems is the main direction ofincreasing hump yard capacity, enhancement of safety in trains breaking-up, improvement of working conditions on hump yards. However, for wider introduction of such systems at the humps, it is necessary to reduce their cost. One of the main tasks of hump control systems is the determination of the optimal cars exit speeds from the retarders. Its solution is significantly complicated because of the uncertainty of cars rolling resistance coefficient, wind velocity and direction, retarder control errors. The paper is aimed at solving the problem of searching for such cars exit speeds from the retarders that provide the longest time intervals between them at the switches. Implementation of this method will make it possible to improve the quality of sorting process as a whole by improving the software of microprocessor control systems for automatic humping, rather than by increasing their technical facilities, which as a result will reduce the cost of their construction and operation. The research results, when solving the problem of searching for cars exit speeds from the retarders, allow us to move from searching for the maximum of a nonlinear non-smooth function of two variables to solution of an equation with one variable, which significantlyaccelerates and simplifies the solution to the problem.

关键词： Railways Sorting hump Optimization Marshalling yard

Leader-following synchronization of a multi-agent system with heterogeneous delays

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Frontiers of Information Technology & Electronic Engineering 2021年第1期22卷 97-106页

作者： Branislav REHAK volodymyr LYNNYK The Czech Academy of Sciences Institute of Information Theory and AutomationPraha 18200Czech Republic

An algorithm is presen ted for leader-following synchronization of a multi-agen t system composed of linear agents with time *** presence of different delays in various agents can cause a synchronization error that does not converge to ***,the norm of this error can be bounded and this boundary is presen *** proof of the main results is formulated by means of linear matrix inequalities,and the size of this problem is independent of the number of *** are illustrated through examples,highlighting the fact that the steady error is caused by heterogeneous delays and demonstrating the capability of the proposed algorithm to achieve synchronization up to a certain error.

关键词： Multi-agent system Time delay Linear matrix inequality

Neocuspidization of the Pulmonary Valve with Autologous Pericardium in the Adult Patient with Ventricular Septal Defect and Infective Endocarditis: A Case Report and Review of the Literature

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Congenital Heart Disease 2022年第6期17卷 641-646页

作者： Igor Mokryk Vitaly Demyanchuk volodymyr Vashkeba Ilya Nechay Borys Todurov Department of Adult Cardiac Surgery Heart InstituteKyivUkraine Department of Pediatric Cardiac Surgery Heart InstituteKyivUkraine

Congenital heart disease (CHD) is one of the risk factors for developing infective endocarditis (IE). Right-sided IEoccurs in 5%–10% of endocarditis cases, and pulmonary valve (PV) is involved in less than 2% of such *** data are few, and optimal treatment methods, indications for surgery, and types of operative techniquesare still under debate. We present an adult patient with a rare combination of the ventricular septal defect (VSD)and PV IE who underwent surgical treatment. Neocuspidization with autologous pericardium was utilized for thereconstruction of his PV. We discuss details of this novel surgical technique.

关键词： Infective endocarditis pulmonary valve neocuspidization ozaki technique congenital heart disease