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95篇 您的检索式:作者名="MYKOLA"
    题名 作者 年代 出处 被引量
1基于周期截断数据矩阵奇异值分解的干扰抑制技术显示文摘针对现有适用于单天线接收机的干扰抑制技术难以为周期调频(PFM)干扰和卫星导航信号提供足够分离度,导致消除干扰成分时卫星导航信号损伤较大的问题,该文提出一种基于周期截断数据矩阵奇异值分解的干扰抑制方法。利用调频干扰信号的周期性把分散在较大带宽的能量集中到重排数据中几个甚至单个频点;进而采用奇异值分解(SVD)将干扰与期望信号映射进不同的投影子空间以消除干扰成分。仿真结果表明该方法可以降低在剔除干扰时卫星导航信号损失,提升卫星导航接收机对抗宽带周期调频干扰的能力。戚连刚 申振恒 王亚妮 国强 Kaliuzhny Mykola 2022电子与信息学报2022,44,6:4
2Ocular Influence of Nano-Modified Fullerene Light,2:Time Correlation of the Choice and Simple Sensorimotor Reactions That Determine Blinding Compensation of the Driver显示文摘We studied the ocular effect of light converted by fullerene on the dynamics of a simple sensorimotor reaction,a reaction of choice(CR)and their correlation at the background of recording the electrical activity of the human brain under extreme lighting conditions and inadequate visibility of the object.We examined 17 people(170 surveys of 8 men and 9 women)aged from 18 to 22 years without health complaints,according to the requirements of ethics when working with people.The ocular pathway of light exposure was provided by the use of glasses with fullerene(C60)filters(Tesla Hyperlight Eyewear?)with 0.33‰concentration of fullerene in polymethyl methacrylate organic glass,2 mm thick.For a placebo,we used glasses in a similar frame with a filter similar in light range,but not containing fullerene.The experimental model reflected the standard situation in which the driver of a vehicle falls in blindingly bright light.We determined the latent periods of a simple sensorimotor reaction and a CR.Electroencephalography(EEG)was recorded with eyes closed and open,with glasses with a fullerene nano-filter and a placebo filter.The Neuron-Spectrum-4/VP(NeuroSoft)complex was used.The recording was carried out mono-polarly,with a quantization frequency of 500 Hz,the electrodes were arranged according to the international system 10-20 in 19 leads.In each lead for the frequency ranges of EEG-delta(0.5-3.9 Hz),theta(4.0-7.9 Hz),alpha(8.0-12.9 Hz),beta1(13.0-19.9 Hz)and beta2(20.0-35.0 Hz)in the Neuron-Spectrum program,power spectral density(PSD)was calculated.We revealed a decrease in correlation of the latent periods of a simple sensorimotor reaction and the CR when using light modified by fullerene.This indicates an improvement in the rate of inter-hemispheric information processes and improvement in the quality and effectiveness of decisions made.It was found a significant(significant)decrease in the activity of frontal and central zones of the right hemisphere in the delta and beta2 ranges.This indicates a decrease in tension during identification of the stimulus and weakening of the activity of image processing operations,i.e.developing a less stressful state and facilitating the decision-making process.It was evidenced a significant increase in the activity of Posterior cingulate cortex in the theta and alpha ranges.This indicates improved coordination of visual information,attention,assessment of the position of the body,inhibition of irrelevant information and optimization of decision-making processes.The result of these changes was an increase in the speed of central information processing and a shift in focus from image processing to decision-making processes.Sergiy A.Gulyar Natalia B.Filimonova Mykola Yu.Makarchuk Yuliia N.Krivdiuk 2019Journal of US-China Medical Science2019,16,3:3
3A workflow for Sustainable Development Goals indicators assessment based on high-resolution satellite data显示文摘For evaluating the progresses towards achieving the Sustainable Development Goals(SDGs),a global indicator framework was developed by the UN Inter-Agency and Expert Group on Sustainable Development Goals Indicators.In this paper,we propose an improved methodology and a set of workflows for calculating SDGs indicators.The main improvements consist of using moderate and high spatial resolution satellite data and state-of-the-art deep learning methodology for land cover classification and for assessing land productivity.Within the European Network for Observing our Changing Planet(ERA-PLANET),three SDGs indicators are calculated.In this research,harmonized Landsat and Sentinel-2 data are analyzed and used for land productivity analysis and yield assessment,as well as Landsat 8,Sentinel-2 and Sentinel-1 time series are utilized for crop mapping.We calculate for the whole territory of Ukraine SDG indicators:15.1.1–‘Forest area as proportion of total land area’;15.3.1–‘Proportion of land that is degraded over total land area’;and 2.4.1–‘Proportion of agricultural area under productive and sustainable agriculture’.Workflows for calculating these indicators were implemented in a Virtual Laboratory Platform.We conclude that newly available high-resolution remote sensing products can significantly improve our capacity to assess several SDGs indicators through dedicated workflows.Nataliia Kussul Mykola Lavreniuk Andrii Kolotii Sergii Skakun Olena Rakoid Leonid Shumilo 2020International Journal of Digital Earth2020,13,2:3
4Experimental investigation of the dynamic behavior of railway track with sleeper voids显示文摘The deterioration of the sleeper support on the ballasted track begins with the accumulation of sleeper voids.The increased dynamic loading in the voided zone and the ballast contact conditions cause the accelerated growth of the settlements in the voided zones,which results in the appearance of local instabilities like ballast breakdown,white spots,subgrade defects,etc.The recent detection and quantification of the sleeper voids with track-side and onboard monitoring can help to avoid or delay the development of local instabilities.The present paper is devoted to the study of the dynamic behavior of railway track with sleeper voids in the ballast breakdown zone.The result of the experimental track-side measurements of rail acceleration and deflection is presented.The analysis shows the existence of the dynamic impact during wheel entry in the voided zone.However,the measured dynamic impact is subjected to the bias of the track-side measurement method.Both the mechanism of the impact and the measurement aspects are explained by using the one-beam model on viscoelastic foundation.The void features in the dynamic behavior are analyzed for the purpose of track-side and onboard monitoring.A practical method of the void parameter quantification is proposed.Mykola Sysyn Olga Nabochenko Vitalii Kovalchuk 2020Railway Engineering Science2020,28,3:2
5Beam dynamics studies on the 100 MeV/100 kW electron linear accelerator for NSC KIPT neutron source显示文摘We designed a 100 MeV/100 kW electron linear accelerator for NSC KIPT, which will be used to drive a neutron source on the basis of subcritical assembly. Beam dynamics studies have been conducted to reach the design requirements (E=100 MeV, P =100 kW, dE/E <1% for 99% particles). In this paper, we will present the progress of the design and the dynamic simulation results. For high intensity and long beam pulse linear accelerators, the BBU effect is one big issue; special care has been taken in the accelerating structure design. To satisfy the energy spread requirement at the linac exit, the particles with large energy difference from the synchronous particle should be eliminated at a low energy stage to ease the design of the collimation system and radiation shielding. A dispersion free chicane with 4 bending magnets is introduced downstream of the 1st accelerating section; the unwanted particles will be collimated there.裴士伦 池云龙 王书鸿 裴国玺 周祖圣 侯汨 Mykola Ayzatskiy Ivan Karnaukhov Volodymyr Kushnir Viktor Mytrochenko Andrey Zelinsky 2012Chinese Physics C2012,36,7:2
6S-doped carbon aerogels/GO composites as oxygen reduction catalysts显示文摘Composites of carbon aerogel and graphite oxide(GO) were synthesized using a self-assembly method based on dispersive forces. Their surface was modified by treatment in hydrogen sulfide at 650 and800 ℃. The samples obtained were characterized by adsorption of nitrogen, TA-MS, XPS, potentiometric titration, and HRTEM and tested as catalysts for oxygen reduction reactions(ORR) in an alkaline medium.The synergistic effect of the composite(electrical conductivity, porosity and surface chemistry) leads to a good ORR catalytic activity. The onset potential for the composite of carbon aerogel heated at 800 ℃ is shifted to a more positive value and the number of electron transfer was 2e-at the potential 0.68 V versus RHE and it increased to 4e-with an increase in the negative values of the potential. An excellent tolerance to methanol crossover was also recorded.Mykola Seredych Krisztina László Enrique Rodríguez-Castellón Teresa J.Bandosz 2016Journal of Energy Chemistry2016,25,2:2
7The Antiviral Action of Polyhexamethylene Guanidine Derivatives显示文摘Andriy Lysytsya Mykola Mandygra 2014Journal of Life Sciences2014,8,1:2
8A sensing mechanism for the detection of carbon nanotubes using selective photoluminescent probes based on ionic complexes with organic dyes显示文摘The multifunctional properties of carbon nanotubes(CNTs)make them a powerful platform for unprecedented innovations in a variety of practical applications.As a result of the surging growth of nanotechnology,nanotubes present a potential problem as an environmental pollutant,and as such,an efficient method for their rapid detection must be established.Here,we propose a novel type of ionic sensor complex for detecting CNTs–an organic dye that responds sensitively and selectively to CNTs with a photoluminescent signal.The complexes are formed through Coulomb attractions between dye molecules with uncompensated charges and CNTs covered with an ionic surfactant in water.We demonstrate that the photoluminescent excitation of the dye can be transferred to the nanotubes,resulting in selective and strong amplification(up to a factor of 6)of the light emission from the excitonic levels of CNTs in the near-infrared spectral range,as experimentally observed via excitation-emission photoluminescence(PL)mapping.The chirality of the nanotubes and the type of ionic surfactant used to disperse the nanotubes both strongly affect the amplification;thus,the complexation provides sensing selectivity towards specific CNTs.Additionally,neither similar uncharged dyes nor CNTs covered with neutral surfactant form such complexes.As model organic molecules,we use a family of polymethine dyes with an easily tailorable molecular structure and,consequently,tunable absorbance and PL characteristics.This provides us with a versatile tool for the controllable photonic and electronic engineering of an efficient probe for CNT detection.Petro Lutsyk Raz Arif Jan Hruby Anatolii Bukivskyi Olexander Vinijchuk Mykola Shandura Viktor Yakubovskyi Yuri Kovtun Graham A Rance Michael Fay Yuri Piryatinski Oleksiy Kachkovsky Anatoli Verbitsky Aleksey Rozhin 2016Light(Science & Applications)2016,5,1:2
9Investment under market and climate policy uncertainty显示文摘Sabine Fuss Jana Szolgayova Michael Obersteiner Mykola Gusti 2008Applied Energy2008,,8:1
10An Overview of Advanced Chalcogenide Thermoelectric Materials and Their Applications显示文摘Thermoelectricity is a strong scientific and technological interest due to its wide application ranging from clean energy producing to photon sensing devices.Recent developments in theoretical studies on the thermoelectric(TE)effects as well as the newly discovered thermoelectric materials provide new opportunities for several applications.Though the scale of production is limited,thermoelectric technology provides an alternative to traditional methods of power generation,heating and cooling systems.TE technologies can be used in power generation,heating and cooling applications.They potentially offer significant energy savings through waste heat recovery and augmented cooling.This article critically discusses the current progress in chalcogenide TE materials and the advantages and limitations associated with the TE technologies.The need for new materials discoveries from the point of view of achieving higher figure-of-merit combined with thermal stabilities in intermediate-and hightemperature Peltier and Seebeck effects applications is also emphasized.Besides,this article aims to evaluate the main features of recently characterized multicomponent chalcogenide ionic compounds with high thermal stabilities as potential TE materials to harvest electric power from high-temperature heat flux via thermoelectricity.Fiseha Tesfaye Mykola Moroz 2018Journal of Electronic Research and Application2018,2,2:1
11Quasiparticle approach to diffusional atomic scale self-assembly of complex structures: from disorder to complex crystals and double-helix polymers显示文摘A self-organisation is an universal phenomenon in nature and,in particular,is highly important in materials systems.Our goal was to develop a new theory that provides a computationally effective approach to this problem.In this paper a quasiparticle theory of a diffusional self-organisation of atoms in continuum space during the diffusional time scale has been introduced.This became possible due to two novelties,a concept of quasiparticles,fratons,used for a description of dynamic degrees of freedom and model Hamiltonian taking into account a directionality,length and strength of interatomic bonds.To illustrate a predictive power and achievable level of complexity of self-assembled structures,the challenging cases of self-assembling of the diamond,zinc-blende,helix and double-helix structures,from a random atomic distribution,have been successfully modelled.This approach opens a way to model a self-assembling of complex atomic and molecular structures in the atomic scale during diffusional time.Mykola Lavrskyi Helena Zapolsky Armen G Khachaturyan 2016npj Computational Materials2016,,1:1
12Desulfurization of digester gas on wood-based activated carbons modified with nitrogen: importance of surface chemistry 显示文摘Mykola Seredych Teresa J Bandosz 2008Energy & Fuels2008,22,:1
13Two-stage chaotic Colpitts oscillator 显示文摘TAMASEVICIUS A MYKOLAITIS G BUMEIAENE S 2001Electronics Letters2001,37,9:1
14Two- stage chaotic Colpitts oscillator 显示文摘TAMASEVICIUS A MYKOLAITIS G BUMELIENE S et al 2001Electronics Letters2001,37,9:1
15Removal of antibiot?ics from water using sewage sludge and waste oil sludge de?rived adsorbents显示文摘Ding R Zhang P F Mykola S 2012Water Research2012,46,13:1
16Evaluation of pectin binding of heavy metalions in aqueous solutions 显示文摘Mykola T K Liddiya A K Batyr K V 1999Chemosphere1999,38,11:1
17Effects of surface chemistry on the reactive adsorption of hydrogen cyanide on activated carbons显示文摘MYKOLA S MARTIN V M TERESA J B 0,,10:1
18Hyperchaotic oscillator with gyrators显示文摘 Cenys S Mykolaitis G 1996Electron Lett1996,33,7:1
19Hyperchaotic oscillators with gyrators显示文摘TAMASEVICIUS A CENYS A MYKOLAITIS G 1997Electron Lett1997,33,:1
20Evaluation of pectin binding of heavy metalions in aqueous solutions显示文摘Mykola T K Liddiya A K Batyr K V 1999Chemosphere1999,38,11:1
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