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Approaches to Simulation of Interaction of Concentrated Solar Radiation with Materials 聚光太阳辐射与材料相互作用的模拟方法
Pub Date : 2021-05-01 DOI: 10.17516/1999-494x-0316
Muhammad S. Paizullakhanov, R. Akbarov
The paper analyzes approaches to modeling the processes of interaction of concentrated solar radiation with materials. The experimental results obtained on the synthesis of materials from a melt in a solar furnace are presented. It is shown that when melting in a solar furnace under the influence of concentrated solar radiation of high density due to the acceleration of the recovery process, it is possible to obtain a fine-grained microstructure that gives the material enhanced mechanical and dielectric properties. It is shown that the relationship between the structure and properties of the materials obtained with the technological parameters of melting and cooling in a solar furnace can be used as an approach to modeling the interaction of concentrated solar radiation with materials
本文分析了太阳辐射与物质相互作用过程的建模方法。介绍了在太阳炉中利用熔体合成材料的实验结果。结果表明,在太阳炉中熔化时,由于加速了恢复过程,在高密度的集中太阳辐射的影响下,有可能获得细粒度的微观结构,从而使材料的力学和介电性能得到增强。计算结果表明,利用在太阳炉中熔化和冷却的工艺参数得到的材料的结构和性能之间的关系,可以作为模拟太阳辐射与材料相互作用的一种方法
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引用次数: 2
Methods for Assessing the State of Snow-Ice Cover 冰雪覆盖状况的评估方法
Pub Date : 2021-05-01 DOI: 10.17516/1999-494x-0312
V. Mashkov, V. Malyshev, P. Fedyunin
The development new methods for measuring the electrophysical and geometric parameters multilayer dielectric medium in order to identify their layers, as well as to detect inhomogeneities in them, is an urgent scientific task. Methods for assessing the state the snow-ice cover are proposed, based on the identification layers of the snow-ice cover by the dielectric permittivity obtained indirectly as a result inclined sounding of the underlying surface by an electromagnetic wave with vertical and horizontal polarization. Under normal sensing the underlying surface, in the form snow-ice cover, by radio waves with vertical and horizontal polarization, the obtained values the reflection coefficient from the boundary layers the received signals are identical. Oblique sensing by a vertically polarized wave in the range from 25 to 90 degrees leads to a sharp dip in the values the reflection coefficient from the boundary layers at certain angles, so for dry snow – 47…55°, dry firn – 55 … 58° and dry ice – 58…61°. These angles characterize the dielectric properties the layers (permittivity), which are explained by the complete polarization the reflected wave in a plane perpendicular to the plane incidence, since at this moment the vibrations the layer's electrons along the direction their movement do not lead to the emission electromagnetic waves in the direction the reflected wave (absent). The given estimated values the complex relative permittivity snow-ice cover as two component medium air and ice at a temperature from minus one to minus forty degrees, or three component medium air, ice and water at zero temperature are a sample for establishing the identity the characteristic properties layers. The purpose this article is to develop methods for assessing the state snow-ice cover used in determining the possibility performing a safe landing a helicopter – type aircraft on an unprepared site with snow-ice cover based on the identification the obtained characteristics snow-ice cover layers based on the results radar sensing with calculated data
开发测量多层介质电物理和几何参数的新方法,以识别其层数,并检测其不均匀性,是一项迫切的科学任务。提出了利用电磁波垂直和水平极化斜探下垫面间接获得的介电常数对积雪层进行识别的积雪状态评估方法。在以冰雪覆盖形式对下垫面进行垂直偏振和水平偏振无线电波正常传感的情况下,得到的边界层反射系数值与接收到的信号是相同的。垂直极化波在25 ~ 90度范围内的斜向传感导致边界层反射系数值在一定角度上急剧下降,因此对于干雪- 47 ~ 55°,干雪- 55 ~ 58°和干冰- 58 ~ 61°。这些角度表征了各层的介电特性(介电常数),这可以用反射波在垂直于平面入射的平面上的完全极化来解释,因为此时,层的电子沿其运动方向的振动不会导致在反射波方向上的发射电磁波(不存在)。给出了在零下1 ~零下40度温度下的双组分介质空气和冰,或在零度温度下的三组分介质空气、冰和水的复杂相对介电常数雪冰盖的估计值,作为建立特征属性层识别的样本。本文的目的是在利用计算数据的雷达传感结果识别所获得的特征积雪层的基础上,开发用于确定直升机型飞机在无准备的积雪覆盖场地安全降落可能性的状态积雪覆盖评估方法
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引用次数: 0
The Speed Electromagnetic Wave Propagation in the Snow-Ice Underlying Surface 电磁波在冰雪下垫面的传播速度
Pub Date : 2021-05-01 DOI: 10.17516/1999-494x-0313
V. Malyshev, V. Mashkov, Владимир Алексеевич Малышев, В.Г. Машков
The results calculations the electromagnetic wave propagation velocity in the snow-ice cover depending on the density, the proportion liquid water content, and the propagation speeds the electromagnetic wave in dry snow, dry firn, and dry ice vary very markedly depending on the proportion liquid water content, the preferred orientation, and the shape ice and air structure are presented. The inclusions in the snow. The performed estimates the complex relative permittivity the medium that determines the speed propagation electromagnetic waves show a noticeable influence the density, the proportion liquid water content and the structure the underlying surface (snow, firn, ice), which allows identifying the layers the underlying surface in order to remotely determine the possibility landing a helicopter-type aircraft on an unprepared site with snow-ice cover. Shown, when the portion the water content in the medium is equal to zero, which is typical for negative temperatures, the speed propagation electromagnetic waves in the medium will depend on the density the medium and structure the dry ice in a small range of 1 m/μs temperature. In dry snow, vertically and horizontally elongated or spherical inclusions make a significant contribution to the change in the speed propagation the electromagnetic wave. At zero temperature, in the frequency range of 2 ... 8 GHz, the share water content in the medium, the density and structure the medium will play a determining role in the speed propagation an electromagnetic wave in the medium. The purpose this article is to determine the change ranges speed propagation electromagnetic waves in snow-ice the underlying surface depending on the density, structure, water content to restore the structure the snow and ice according to radar sensing, a more accurate determination the depth snow and thickness ice cover used in the assessment the possibility the safe landing an aircraft the helicopter type on an unprepared ground with snow-ice cover
结果计算了电磁波在冰雪覆盖层中随密度、液态水含量比例的传播速度,并给出了电磁波在干雪、干雪和干冰中的传播速度随液态水含量比例、优选方向和冰与空气结构形状的变化规律。雪中的夹杂物。本文估计了决定电磁波传播速度的介质的复杂相对介电常数对下垫面(雪、雪、冰)的密度、液态水含量比例和结构的显著影响,从而可以识别下垫面的层数,从而远程确定直升机型飞机在冰雪覆盖的非准备场地降落的可能性。如图所示,当介质中含水量为零时,在温度为1 m/μs的小范围内,电磁波在介质中的传播速度取决于介质的密度和干冰的结构。在干雪中,垂直和水平方向的细长或球形夹杂物对电磁波传播速度的变化有重要贡献。在零温度下,频率范围为2…8 GHz时,介质中所含的水分、介质的密度和结构将对电磁波在介质中的传播速度起决定性作用。本文的目的是根据雷达传感确定雪冰下垫面中电磁波随密度、结构、含水量的变化范围和传播速度,以恢复冰雪的结构,更准确地确定积雪深度和冰盖厚度,用于评估直升机型飞机在无准备的冰雪覆盖地面上安全降落的可能性
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引用次数: 2
The Technology for Detecting Weeds in Agricultural Crops Based on Vegetation Index VARI (PlanetScope) 基于植被指数VARI (PlanetScope)的农作物杂草检测技术
Pub Date : 2021-05-01 DOI: 10.17516/1999-494x-0314
M. Erunova, T. Pisman, Anatoliy P. Shevyrnogov
The aim of the work is to develop techniques for detecting weediness in agricultural crops based on the use of the VARI vegetation index, calculated from the PlanetScope satellite data. The territories of the Krasnoyarsk Agricultural Research Institute of the Federal Research Center of the Krasnoyarsk Science Center of SB RAS near the village Minino (Central Siberia, Krasnoyarsk Region) were used as the object of the research. To calculate the vegetation index VARI of grain crops, the algorithm for receiving and processing PlanetScope satellite data was developed. On its basis, a map of the spatial distribution of the VARI index for wheat crops with various degrees of weediness was made. According to the satellite data of PlanetScope (VARI), possibility to interpret the areas of wheat sowing with a high and low degree of weediness during the growing season is shown. It was revealed that the VARI value of wheat crops with a low degree of infestation is greater than the VARI value of wheat crops with a high degree of infestation
这项工作的目的是根据利用PlanetScope卫星数据计算的VARI植被指数,开发检测农作物杂草的技术。SB RAS的克拉斯诺亚尔斯克科学中心联邦研究中心克拉斯诺亚尔斯克农业研究所的领土在Minino村附近(西伯利亚中部,克拉斯诺亚尔斯克地区)被用作研究对象。为了计算粮食作物植被指数VARI,开发了PlanetScope卫星数据的接收和处理算法。在此基础上,绘制了不同杂草程度小麦作物VARI指数的空间分布图。根据PlanetScope (VARI)卫星数据,给出了小麦生长季杂草程度高低的播种区域解译的可能性。结果表明,低侵染程度小麦的VARI值大于高侵染程度小麦的VARI值
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引用次数: 1
Method of Constructing a Line Secretive Exit the Aircraft at a Given Point of the Detection Area Surveillance Radar Based on the Spectrum Analysis of the Doppler Frequency of the Received Signal 基于接收信号多普勒频率的频谱分析,构建飞机在探测区域监视雷达给定点的线路秘密退出方法
Pub Date : 2021-05-01 DOI: 10.17516/1999-494x-0309
Valeriy V. Zamaraev, A. Kutuzov, Igor V. Lyutikov, Dmitry V. Malcev
The article noted the contradictions in the theory and practice of the subject area of the study confirming the urgency of the task of constructing the trajectory of a hidden exit the aircraft at a given point of the detection area surveillance radar based on the spectrum analysis of the Doppler frequency of the received signal, the proposed initial data (initial conditions), describes the scientific and methodological apparatus of the embodiment of the method for generating control signals to implement the synthesized method, which allows to increase the effectiveness of air and space attack
文章指出,研究主题领域的理论与实践存在矛盾,证实了根据接收信号的多普勒频率的频谱分析,在探测区域监视雷达的给定点构建隐藏出口飞机轨迹的任务的紧迫性,提出的初始数据(初始条件),描述了用于生成控制信号以实现合成方法的方法实施例的科学和方法装置,该方法允许增加空中和空间攻击的有效性
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引用次数: 0
Vibration Parameters Study of Ship Structures Using Wavelet Analysis of Vibrogram 基于振动图小波分析的船舶结构振动参数研究
Pub Date : 2021-05-01 DOI: 10.17516/1999-494x-0311
P. A. Starodubtsev, G. Dorofeev, Andrey O. Lipovetskiy
The study of the vibration parameters of ship structures is important for developing measures to ensure their reliable operation on ships. The commonly used analysis of vibrograms using the Continuous Fourier Transform (CFT) to accurately represent non-stationary functions in general and noise source signals in particular is unsuitable due to a number of drawbacks. The problems of spectral analysis and time-limited signal synthesis can be partially solved by switching to the Window Fourier Transform (WFT). The disadvantage of the WFT is that its calculation uses a fixed window, which cannot be adapted to the local properties of the signal. In order to get rid of this shortcoming for the analysis of vibrogram you can use wavelet transform. It also solves a number of other problems related to the processing of a noise signal. The word “wavelet” means small waves following each other (some sources have introduced the concept of “splash”). In a narrow sense, wavelets are a family of functions obtained by scaling and shifting a single, parent function. In a broad sense, wavelets are functions with frequency localization, whose average value is zero. The article shows the signs of a wavelet. Examples of the most common wavelet functions are given. The use of wavelet functions is proposed not only on the basis of time, but also frequency transformations. The implementation of the algorithm for analyzing vibration measurement data is proposed. An example of vibration measurement data and the results of their processing based on frequency wavelet analysis are given
船舶结构振动参数的研究对于制定保证结构在船舶上可靠运行的措施具有重要意义。通常使用连续傅立叶变换(CFT)对振图进行分析,以准确地表示一般的非平稳函数,特别是噪声源信号,由于许多缺点而不适合。切换到窗口傅里叶变换(WFT)可以部分解决频谱分析和时域信号合成的问题。WFT的缺点是它的计算使用一个固定的窗口,不能适应信号的局部特性。为了克服这一缺点,可以采用小波变换对振动图进行分析。它还解决了与噪声信号处理有关的许多其他问题。“小波”这个词的意思是相互跟随的小波(一些来源引入了“飞溅”的概念)。从狭义上讲,小波是通过缩放和移动单个母函数得到的一系列函数。广义上讲,小波是具有频率局域化的函数,其平均值为零。这篇文章展示了小波的符号。给出了最常见的小波函数的例子。提出了小波函数在时间变换和频率变换基础上的应用。给出了振动测量数据分析算法的实现。给出了振动测量数据的实例及其基于频率小波分析的处理结果
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引用次数: 0
Experimental Study of the Characteristics of Band-Passed Ultra-High Frequency Filters with Increased Protective Band in the Interest of Ensuring Electromagnetic Compatibility 增加保护频带的带通超高频滤波器特性的实验研究,以保证电磁兼容性
Pub Date : 2021-05-01 DOI: 10.17516/1999-494x-0308
V. P. Berdyshev, A. Zhuravlev, Nikita V. Kopylov, V. Kopylov, Vitaly V. Loy
The article presents the structure of the method for the synthesis of microwave bandpass filters (BPF) on non-uniform lines, which makes it possible to select the structure and parameters of the BPF that provide the maximum length of the stop band to meet the requirements of electromagnetic compatibility (EMC) with given restrictions on the attenuation characteristics in the passband and barrier bands. and the established design and technological limitations on the drop in wave resistance and manufacturing tolerances. The results of experimental studies of the characteristics of ultrahigh-frequency bandpass filters with an increased protective band in order to ensure EMC are presented
本文介绍了在非均匀线上合成微波带通滤波器(BPF)的方法的结构,使得在对通带和阻挡带的衰减特性有一定限制的情况下,选择能提供最大阻带长度的带通滤波器的结构和参数,以满足电磁兼容性的要求成为可能。并确定了设计和技术上的限制,降低了波浪阻力和制造公差。给出了为保证电磁兼容而增加保护带的超高频带通滤波器特性的实验研究结果
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引用次数: 0
Influence of the Content and Nature of the Plasticizer on the Properties of Butadiene-Nitrile Rubber 增塑剂的含量和性质对丁腈橡胶性能的影响
Pub Date : 2021-03-01 DOI: 10.17516/1999-494X-0303
V. V. Pavlova, M. Sokolova, A. Fedorova
In this article investigates the effect of the content of plasticizers on the properties of rubbers based on rubber BNKS-18 AMN. The traditional, widely used dioctyl phthalate (DOP), as well as the more modern, environmentally friendly dioctyl terephthalate (DOTP), were used as plasticizers. It has been established that the introduction of plasticizers contributes to the production of rubbers with an improved complex of operational properties, such as elasticity, frost resistance, resistance to the corrosive media SZhR-3. At the same time, according to the research results, it was revealed that the introduction of plasticizers in an amount of 20 phr leads to the most noticeable improvement in these properties. In terms of physicomechanical and low temperature properties, the samples containing DOTP significantly exceed those of the samples containing DOP. Thus, our data showed that the use of DOTP is promising as an alternative to the widely used DOP.
本文研究了增塑剂含量对以bnks - 18amn橡胶为基材的橡胶性能的影响。传统的,广泛使用的邻苯二甲酸二辛酯(DOP),以及更现代的,环保的对苯二甲酸二辛酯(DOTP),被用作增塑剂。已经确定,增塑剂的引入有助于生产具有改进的复合操作性能的橡胶,如弹性,抗冻性,耐腐蚀性介质SZhR-3。同时,根据研究结果显示,增塑剂的引入量为20phr时,这些性能的改善最为显著。在物理力学性能和低温性能方面,含DOTP的样品明显优于含DOP的样品。因此,我们的数据表明,使用DOTP作为广泛使用的DOP的替代方案是有希望的。
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引用次数: 1
Heavy Metals as Impurities in the Bayer Production Cycle of the Aluminum Hydroxide from Sierra Leone Bauxite. Preliminary Study 塞拉利昂铝土矿氢氧化铝拜耳生产周期中的重金属杂质初步研究
Pub Date : 2021-03-01 DOI: 10.17516/1999-494X-0296
G. Dobra, Sorin Iliev, L. Cotet, Alina Boiangiu, I. Hulka, Lidia Kim, G. Catrina, L. Filipescu
This paper is reporting the data of a preliminary study on heavy metals distribution in the fluid and solid phases involved in dry and classified aluminium hydroxide production through Bayer process. For heavy metals released in the fluid phases, the main source of contamination is the bauxite through its mineralogical phases soluble or insoluble in alkaline solution. It was shown that predominant way to transfer contaminating elements in aluminium hydroxide particles is the occlusion of very fine particles coming from mineralogical phases of bauxite residue. New born mineralogical phases from bauxite residue, like poor crystallized sodalite and cancrinite, are the most active occlusion contaminants.
本文报道了拜耳法干法和分级法生产氢氧化铝的液固两相重金属分布的初步研究数据。对于流体相释放的重金属,主要污染源是铝土矿通过其矿物学相溶于或不溶于碱性溶液。结果表明,氢氧化铝颗粒中污染元素的主要转移方式是来自铝土矿渣矿物学相的极细颗粒的遮挡。铝土矿渣中新生的矿物学相,如结晶不良的钠石岩和癌灰岩,是最活跃的遮挡污染物。
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引用次数: 3
Game Graph and Formats Approach for Mixlingual Data Ontology for Geological and Marketing Tasks 面向地质和市场任务的混合语言数据本体的游戏图和格式方法
Pub Date : 2021-03-01 DOI: 10.17516/1999-494X-0306
Ekaterina S. Skornyakova, D. V. Lichargin, Pavel V. Polunian
The paper introduces a new concept – trans-forest. A forest is a complex of additional connected trees. The skeleton of the graph is the basic multi-hierarchy. Subjects and “forces” are sources of moves on the playing field of the trans-forest based on the rules of the generative grammars of Montague. Each move of all generative grammars is synchronized with the meta-generative grammar – the “daemon of time”. Each turn over a trans-forest can be done by moving the present marker on the time tree to the “Next” position. Particular attention is paid to the format tree and transconnections between trees and its levels, since it is the format tree that determines human behavior in certain situations. An algorithm of evolutionarily justified expansions is proposed, the purpose of which is to ensure well-being for the subject himself and other subjects. The proposed trans-forest model is intended for modeling educational, language IT marketing, geological and other situations from the point of view of graph theory and game theory.
本文引入了一个新的概念——跨林。森林是由额外相连的树木组成的复合体。图的骨架是基本的多层结构。主体和“力量”是基于蒙太古生成语法规则的跨森林游戏场上的行动来源。所有生成语法的每一步都与元生成语法——“时间的守护进程”——同步。通过将时间树上的当前标记移动到“下一个”位置,玩家可以在横贯森林中进行每次回合。特别要注意的是格式树和树与层之间的连接,因为在某些情况下,正是格式树决定了人类的行为。提出了一种进化合理扩展算法,其目的是确保主体自身和其他主体的福祉。提出的跨森林模型旨在从图论和博弈论的角度对教育、语言IT营销、地质等情况进行建模。
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引用次数: 0
期刊
Journal of Siberian Federal University: Engineering & Technologies
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