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Target acquisition performance in the presence of JPEG image compression

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Defence Technology（防务技术） 2024年第3期33卷 30-41页

作者： Boban Bondzulic Nenad Stojanovic Vladimir lukin Sergey A.Stankevich Dimitrije Bujakovic Sergii Kryvenko University of Defence in Belgrade Military AcademyVeljka Lukica Kurjaka 3311000 BelgradeSerbia National Aerospace University Department of Information-Communication TechnologiesChkalova 1761070 KharkivUkraine National Academy of Sciences of Ukraine Scientific Centre for Aerospace Research of the EarthOles Honchar 55-b01054 KyivUkraine

This paper presents an investigation on the effect of JPEG compression on the similarity between the target image and the background,where the similarity is further used to determine the degree of clutter in the *** new clutter metrics based on image quality assessment are introduced,among which the Haar wavelet-based perceptual similarity index,known as HaarPSI,provides the best target acquisition prediction *** is shown that the similarity between the target and the background at the boundary between visually lossless and visually lossy compression does not change significantly compared to the case when an uncompressed image is *** future work,through subjective tests,it is necessary to check whether this presence of compression at the threshold of just noticeable differences will affect the human target acquisition *** values are compared with the results of subjective tests of the well-known target Search_2 database,where the degree of agreement between objective and subjective scores,measured through linear correlation,reached a value of 90%.

关键词： JPEG compression Target acquisition performance Image quality assessment Just noticeable difference Probability of target detection Target mean searching time

Pellet Injectors Developed at the Pelin Laboratory for Steady-State Plasma Fuelling

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Plasma Science and Technology 2004年第3期6卷 2286-2290页

作者： I.Vinyar A.Geraud H.Yamada R.Sakamoto Y.Oda a.lukin A.Umov S.Skoblikov G.Gros G.Saksaganskii P.Reznichenko I.Krasilnikov V.Panchenko PELIN Laboratory Ltd. 2 Admiral Makarov St. Moscow 125212 Russia Association Euratom-CEA Departement de Recherches sur la Fusion Controllee CEA/Cadarache 13108 St Paul Lez Durance France National Institute for Fusion Science 322-6 Oroshi-cho Toki-shi 509-5292 Japan Mitsubishi Heavy Industries Ltd. 1-1 Wadasaki-cho 1-Chome Hyogo-ku Kobe-shi 652-8585 Japan D. V. Efremov Scientific Research Institute of Electrophysical Apparatus St. Petersburg 196641 Russia

Pneumatic and centrifugal injectors for steady-state plasma refuelling bysolid hydrogen, deuterium and tritium pellets have been designed at the PELIN Laboratory to meetrequirements of LHD, TORE SUPRA, and ITER. Prese... 详细信息

关键词： pellet plasma fuelling

Tuning the Spatially Controlled Growth,Structural Self-Organizing and Cluster-Assembling of the Carbyne-Enriched Nano-Matrix during Ion-Assisted Pulse-Plasma Deposition

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Fluid Dynamics & Materials Processing 2022年第6期18卷 1763-1779页

作者： Alexander lukin Oğuz Gülseren Integrated Carbon Nano-Systems Lab Western-Caucasus Research CenterTuapse352808Russian Federation Department of Physics Bilkent UniversityÇankayaAnkara06800Turkey

Carbyne-enriched nanomaterials are of current interest in nanotechnology-related *** properties of these nanomaterials greatly depend on their production *** particular,structural self-organization and auto-synchronization of nanostructures are typical phenomena observed during the growth and heteroatom-doping of carbyne-enriched nanostructured metamaterials by the ion-assisted pulse-plasma deposition ***,fine tuning of these processes may be seen as the key step to the predictive designing of carbyneenriched nano-matrices with improved *** particular,we propose an innovative concept,connected with application of the vibrational-acoustic effects and based on universal Cymatics *** effects are used to induce vibration-assisted self-organized wave patterns together with the simultaneous manipulation of their properties through an electric *** between the inhomogeneous electric field distribution generated on the vibrating layer and the plasma ions serves as the additional energizing factor controlling the local pattern formation and self-organization of the nano-structures.

关键词： Carbyne-enriched nanomaterials ion assisted pulse plasma deposition carbon sp-chains stabilization of sp-hybridized carbon sp-encapsulating heteroatom-doping vibrational-acoustic activation vibrational patterns electromagnetic activation nanoscale self-organization standing surface acoustic waves nano-Cymatics predictive patterning

A novel strategy of smart manipulation by micro-scale oscillatory networks of the reactionary zones for enhanced extreme thrust control of the next-generation solid propulsion systems

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Defence Technology（防务技术） 2018年第5期14卷 635-642页

作者： Alexander N.lukin Bldg.9 Tupik ZvezdniyTuapseKrasnodar TerritoryRU 352808Russian Federation

The main aim of this research is to get a better knowledge and understanding of the micro-scale oscillatory networks behavior in the solid propellants reactionary zones. Fundamental understanding of the micro-and nano-scale combustion mechanisms is essential to the development and further improvement of the next-generation technologies for extreme control of the solid propellant thrust. Both experiments and theory confirm that the micro-and nano-scale oscillatory networks excitation in the solid propellants reactionary zones is a rather universal phenomenon. In accordance with our concept,the micro-and nano-scale structures form both the fractal and self-organized wave patterns in the solid propellants reactionary zones. Control by the shape, the sizes and spacial orientation of the wave patterns allows manipulate by the energy exchange and release in the reactionary zones. A novel strategy for enhanced extreme thrust control in solid propulsion systems are based on manipulation by selforganization of the micro-and nano-scale oscillatory networks and self-organized patterns formation in the reactionary zones with use of the system of acoustic waves and electro-magnetic fields, generated by special kind of ring-shaped electric discharges along with resonance laser radiation. Application of special kind of the ring-shaped electric discharges demands the minimum expenses of energy and opens prospects for almost inertia-free control by combustion processes. Nano-sized additives will enhance self-organizing and self-synchronization of the micro-and nano-scale oscillatory networks on the nanometer scale. Suggested novel strategy opens the door for completely new ways for enhanced extreme thrust control of the solid propulsion systems.

关键词： Solid propulsion systems Extreme thrust control Reactionary zones Micro-scale oscillatory networks Self-organized wave patterns Energy-releasing areas

Prevalence and factors associated with vitamin C deficiency in inflammatory bowel disease

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World Journal of Gastroenterology 2022年第33期28卷 4834-4845页

作者： Benjamin Langan Gordon Jonathan S Galati Stevie Yang Randy S Longman Dana.lukin Ellen J Scherl Robert Battat Department of Medicine New York Presbyterian/Weill Cornell Medical CenterNew YorkNY 10065United States Department of Gastroenterology and Hepatology New York Presbyterian/Weill Cornell Medical CenterNew YorkNY 10021United States

BACKGROUND Patients with inflammatory bowel disease(IBD) are prone to several nutritional deficiencies. However, data are lacking on vitamin C deficiency in Crohn’s disease(CD) and ulcerative colitis(UC) patients, as well as the impact of clinical, biomarker and endoscopic disease severity on the development of vitamin C *** To determine proportions and factors associated with vitamin C deficiency in CD and UC *** In this retrospective study, we obtained clinical, laboratory and endoscopic data from CD and UC patients presenting to the IBD clinic at a single tertiary care center from 2014 to 2019. All patients had an available plasma vitamin C level. Of 353 subjects who met initial search criteria using a cohort discovery tool, 301ultimately met criteria for inclusion in the study. The primary aim described vitamin C deficiency(≤ 11.4 μmol/L) rates in IBD. Secondary analyses compared proportions with deficiency between active and inactive IBD. Multivariate logistic regression analysis evaluated factors associated with *** Of 301 IBD patients, 21.6% had deficiency, including 24.4% of CD patients and 16.0% of UC patients. Patients with elevated C-reactive protein(CRP)(39.1% vs 16.9%, P < 0.001) and fecal calprotectin(50.0% vs 20.0%, P = 0.009) had significantly higher proportions of deficiency compared to those without. Penetrating disease(P = 0.03),obesity(P = 0.02) and current biologic use(P = 0.006) were also associated with deficiency on univariate analysis. On multivariate analysis, the objective inflammatory marker utilized for analysis(elevated CRP) was the only factor associated with deficiency(odds ratio = 3.1, 95%confidence interval: 1.5-6.6, P = 0.003). There was no difference in the presence of clinical symptoms of scurvy in those with vitamin C deficiency and those *** Vitamin C deficiency was common in IBD. Patients with elevated inflammatory markers and penetrating disease had higher rates of vitamin

关键词： Inflammatory bowel disease Crohn’s disease Ulcerative colitis Vitamin C deficiency Scurvy Malnutrition

Sparse representation for machine learning the properties of defects in 2D materials

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npj Computational Materials 2023年第1期9卷 1186-1195页

作者： Nikita Kazeev Abdalaziz Rashid Al-Maeeni Ignat Romanov Maxim Faleev Ruslan lukin Alexander Tormasov A.H.Castro Neto Kostya S.Novoselov Pengru Huang Andrey Ustyuzhanin Institute for Functional Intelligent Materials National University of Singapore4 Science Drive 2117544 SingaporeSingapore Constructor University Bremen gGmbH Campus Ring 1Bremen 28759Germany HSE University Myasnitskaya Ulitsa20101000 MoscowRussia Innopolis University Universitetskaya St1InnopolisRepublic of Tatarstan 420500Russia Centre for Advanced 2D Materials National University of Singapore6 Science Drive 2117546 SingaporeSingapore

Two-dimensional materials offer a promising platform for the next generation of(opto-)electronic devices and other high technology *** of the most exciting characteristics of 2D crystals is the ability to tune their properties via controllable introduction of ***,the search space for such structures is enormous,and ab-initio computations prohibitively *** propose a machine learning approach for rapid estimation of the properties of 2D material given the lattice structure and defect *** method suggests a way to represent configuration of 2D materials with defects that allows a neural network to train quickly and *** compare our methodology with the state-of-the-art approaches and demonstrate at least 3.7 times energy prediction error ***,our approach is an order of magnitude more resource-efficient than its contenders both for the training and inference part.

关键词： properties defects prediction

Inverse-designed silicon carbide quantum and nonlinear photonics

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Light(Science & Applications) 2023年第9期12卷 1886-1892页

作者： Joshua Yang Melissa A.Guidry Daniil M.lukin Kiyoul Yang Jelena Vučković E.L.Ginzton Laboratory Stanford UniversityStanfordCAUSA John A.Paulson School of Engineering and Applied Sciences Harvard UniversityCambridgeMAUSA

Inverse design has revolutionized the field of photonics,enabling automated development of complex structures and geometries with unique functionalities unmatched by classical ***,the use of inverse design in nonlinear photonics has been *** this work,we demonstrate quantum and classical nonlinear light generation in silicon carbide nanophotonic inverse-designed Fabry-Pérot *** achieve ultra-low reflector losses while targeting a pre-specified anomalous dispersion to reach optical parametric *** controlling dispersion through inverse design,we target a second-order phase-matching condition to realize second-and third-order nonlinear light generation in our devices,thereby extending stimulated parametric processes into the visible *** first realization of computational optimization for nonlinear light generation highlights the power of inverse design for nonlinear optics,in particular when combined with highly nonlinear materials such as silicon carbide.

关键词： spectrum. nonlinear inverse

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建交六十年时的中国与俄罗斯(英文)

建交六十年时的中国与俄罗斯(英文)

Cherenkov radiation from electrons passing through human tissue

北京论坛（2009）文明的和谐与共同繁荣——危机的挑战、反思与和谐发展

作者： Alexander lukin Center for East Asian and SCO Studies Moscow State Institute of International RelationsMFA of Russia

On October 1,1949 the PRC was established and on the next day the USSR recognized the new *** relationship between Moscow and Beijing during the following 60 years saw various *** is its current state and what do Russ... 详细信息

关键词：中国与俄罗斯六十年

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Journal of Innovative Optical Health Sciences 2017年第1期10卷 94-98页

作者： Pavel lukin Izmail Batkin Alexandr N.Almaliev Tatyana A.Churakova Mikhail A.Dolgopolov Igor V.Kopytin Department of Physics Voronezh State University 1 Universitetskaya Sq.Voronezh 394000Russia School of Electrical Engineering and Computer Science University of Ottawa 800 King Edward A venue OttawaON CanadaK1N 6N5

A method for investigating the optical properties of human tissues is *** method is based on the measurement of Cherenkov radiation produced by relativistic electrons passing through the ***-Carlo simulation of visible photon emission and propagation is carried out taking into account multiple electron and photon scattering *** of the Cherenkov radiation to the optical characteristics of human tissues is demonstrated.

关键词： Coherent radiation human tissue optics multiple scattering.