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2016 Neotložnaâ Medicinskaâ Pomoŝʹ  
The 75th birth anniversary of Sergey v. Smirnov.  ... 
doaj:08a31134af8e423d90cfe56fa9db5313 fatcat:gaw7fqilrnakhnxadnpljb7nei

Double-scale Pulses Generated by Mode-locked Fibre Lasers and Their Applications [chapter]

Sergey Kobtsev, Sergey Smirnov, Sergey Kukarin
2016 Fiber Laser  
This chapter presents a detailed analysis of properties of double-scale pulses (also called noise-like pulses and femtosecond clusters) generated in fibre lasers and gives an indepth discussion of promising applications of such pulses.
doi:10.5772/61956 fatcat:nmvm2io2yfhvvfvjclshz3exiy

Those Unpredictable Recessions

Sergey V. Smirnov
2011 Social Science Research Network  
Not much has changed since then. 4 See [Smirnov, 2011] for more details about many other cyclical indicators.  ...  In fact there were tens of resourceful researches devoted to cyclical turning points dating and prediction (see [Smirnov, 2011] for a survey).  ... 
doi:10.2139/ssrn.1996991 fatcat:kiogin2s6bdkxk6cmeiw2l6hjm

Exactly solvable periodic Darboux q-chains [article]

Ivan A. Dynnikov, Sergey V. Smirnov
2002 arXiv   pre-print
A difference q-analogue of the dressing chain is discussed in this paper.
arXiv:math-ph/0207022v1 fatcat:wbzcyrzub5e23lr734mpfz6p4u

Reducing Complexity of Large EPCs

Artem Polyvyanyy, Sergey Smirnov, Mathias Weske
2008 Zenodo  
Business processes are an important instrument for understanding and improving how companies provide goods and services to customers. Therefore, many companies have documented their business processes well, often in the Event-driven Process Chains (EPC). Unfortunately, in many cases the resulting EPCs are rather complex, so that the overall process logic is hidden in low level process details. This paper proposes abstraction mechanisms for process models that aim to reduce their complexity,
more » ... e keeping the overall process structure. We assume that functions are marked with efforts and splits are marked with probabilities. This information is used to separate important process parts from less important ones. Real world process models are used to validate the approach.
doi:10.5281/zenodo.5526907 fatcat:b3twh22iifdezhxnuswkmdt3fq

Generation of double-scale femto/pico-second optical lumps in mode-locked fiber lasers

Sergey Kobtsev, Sergey Kukarin, Sergey Smirnov, Sergey Turitsyn, Anton Latkin
2009 Optics Express  
We observed generation of stable picoseconds pulse train and double-scale optical lumps with picosecond envelope and femtosecond noise-like oscillations in the same Yb-doped fiber laser with all-positivedispersion cavity mode-locked due to the effect of non-linear polarization evolution. In the noise-like pulse generation regime the auto-correlation function has a non-usual double (femto-and picosecond) scale shape. We discuss mechanisms of laser switching between two operation regimes and
more » ... strate a good qualitative agreement between experimental results and numerical modeling based on modified nonlinear Schrödinger equations.
doi:10.1364/oe.17.020707 pmid:19997301 fatcat:3wdqpxbqgzecrmioi4fueqrm34

Different generation regimes of mode-locked all-positive-dispersion all-fiber Yb laser

Sergey Kobtsev, Sergey Kukarin, Sergey Smirnov, Sergei Turitsyn, Anton Latkin, Kanishka Tankala
2010 Fiber Lasers VII: Technology, Systems, and Applications  
Different generation modes of all-positive-dispersion all-fibre Yb laser mode-locked due to effect of non-linear polarization evolution are investigated. For the first time we realized in the same laser both generation of single picoseconds pulse train and a newly observed lasing regime where generated are picosecond wave-packets, each being a train of femtosecond sub-pulses. Using both experimental results and numerical modeling we discuss in detail the mechanisms of laser mode-locking and
more » ... ching of generation regimes and show a strong dependence of output laser characteristics on configuration of polarization controllers. A good qualitative agreement between experimental results and numerical modeling is demonstrated.
doi:10.1117/12.841237 fatcat:vscz3torf5duxn3wdlgsbdetie

Cascaded SRS of single- and double-scale fiber laser pulses in long extra-cavity fiber

Sergey Kobtsev, Sergey Kukarin, Sergey Smirnov, Ilya Ankudinov
2014 Optics Express  
This work presents, for the first time, the results of studies of stimulated Raman scattering (SRS) in 1.2-km P 2 O 5 -doped silica fiber of radiation of single-and double-scale picosecond pulses generated in a fiber master oscillator and amplified in a one-stage fiber amplifier. Shown are differences in supercontinuum spectra composed of several Stokes components when pumped with pulses of different structure. More efficient Raman transformation of double-scale pulses was identified, leading to broader supercontinuum spectra.
doi:10.1364/oe.22.020770 pmid:25321280 fatcat:yooltw53xzekzikiwuphfnbmoi

Bio-mimicking rotary nanomotors

Anatoly Smirnov, Lev Murokh, Sergey Savel'ev, Franco Nori, Achim Wixforth
2009 Nanotechnology IV  
We propose a simple design of a rotary nanomotor comprised of three quantum dots attached to the rotating ring (rotor) in the presence of an in-plane dc electric field. The quantum dots (sites) can be coupled to or decoupled from source and drain carrier reservoirs, depending on the relative positions of the leads and the dots. We derive equations for the site populations and solve these equations numerically jointly with the Langevin-type equation for the rotational angle. It is shown that the
more » ... synchronous loading and unloading of the sites results in unidirectional rotation of the nanomotor. The corresponding particle current, torque, and energy conversion efficiency are determined. Our studies are applicable both to biologically-inspired rotary nanomotors, the F 0 motor of ATP synthase and the bacterial flagellar motor, which use protons as carriers, and to novel artificial semiconductor systems using electrons. The efficiency of this semiconductor analog of the rotary biomotors is up to 85% at room temperature.
doi:10.1117/12.821567 fatcat:qui6dqqvunenthsbmqvja7fyvm

Model reduction in Smoluchowski-type equations [article]

Ivan V. Timokhin, Sergey A. Matveev, Eugene E. Tyrtyshnikov, Alexander P. Smirnov
2020 arXiv   pre-print
In this paper we utilize the Proper Orthogonal Decomposition (POD) method for model order reduction in application to Smoluchowski aggregation equations with source and sink terms. In particular, we show in practice that there exists a low-dimensional space allowing to approximate the solutions of aggregation equations. We also demonstrate that it is possible to model the aggregation process with the complexity depending only on dimension of such a space but not on the original problem size. In
more » ... addition, we propose a method for reconstruction of the necessary space without solving of the full evolutionary problem, which can lead to significant acceleration of computations, examples of which are also presented.
arXiv:2008.09439v1 fatcat:dbnnnr2ezfbbvk24idnzpxyme4

Siberian Literature in Socio-Cultural Range

Sergei Smirnov, OLGA Merkulova
2022 Philology & Human  
This review gives an idea of the content of the All-Russian scientific and practical conference (with international participation) "Literature of Siberia in the sociocultural space", which was held on September 23-24, 2021, in Irkutsk. The conference was dedicated to the 100th birth anniversary of the literary scientist, critic, researcher, and devotee of Siberian literature - Vasily Prokopyevich Trushkin. The conference was attended by the professor students and colleagues from Irkutsk State
more » ... iversity, famous philologists from other Siberian universities - Barnaul, Kemerovo, Krasnoyarsk, Tomsk, Ulan-Ude, researchers, and experts in Siberian literature from Moscow, St. Petersburg, China, USA and India. Topical issues of the history and theory of Siberian literature, its specificity and features of interaction with general sociocultural phenomena were discussed. The "geography" of the conference participants, the variety of reports topics, lively discussions and polemics testify to the relevance, great research potential of the cardinal direction of science - literary local history, at the origins of which was Professor Vasily Prokopyevich Trushkin.
doi:10.14258/filichel(2022)1-15 fatcat:ocafkmmtxbaqdbghembzzgugpi

Karyotype of Brachanthemum krylovii Serg

Sergey V. Smirnov, Katsuhiko Kondo
2013 Chromosome Botany  
Altai (50°23'38", 26°40'39"), Altai Republic, Russian Federation (Smirnov 2000) .  ...  The chromosome number of Brachanthemum krylovii was previously described as 2n=18 (Smirnov 2000) .  ... 
doi:10.3199/iscb.8.29 fatcat:icsbwmb6nngy3kmvjcd4oxrfdq

Topological engineering of mode-locked fibre lasers: NALM/NALM2 technologies

Michael Gervaziev, Aleksey Ivanenko, Alexey Kokhanovsky, Sergey Smirnov, Sergey Kobtsev, Sergey Turitsyn, Ruxin Li, Upendra N. Singh
2018 High-Power Lasers and Applications IX  
The work presents for the first time a comparative study of mode-locked figure-8 laser, in which two independently pumped active media are located either in the same or in different cavity loops. It is shown that the NALM2 configuration (both active media in the same cavity loop) delivers both higher average and peak radiation power. Flexibility of NALM/NALM2 technologies is further demonstrated for implementation of algorithmic electronically driven control over radiation mode-locking regimes.
more » ... Also discussed are the results of experimental testing of electronic methods relying on NALM/NALM2 technologies for setting desired generation regimes.
doi:10.1117/12.2501243 fatcat:7kyv53cdf5b2zh2pvunuspk44q

Modelling of noise-like pulses generated in fibre lasers

Sergey Smirnov, Sergey Kobtsev, Bahram Jalali, Sergei K. Turitsyn, Daniel R. Solli, John M. Dudley
2016 Real-time Measurements, Rogue Events, and Emerging Applications  
The present paper for the first time proposes and studies a relatively simple model of noise-like pulses that matches the experimental data well and suggests that there is a correlation between phases of adjacent spectral components of noiselike pulses. Comparison of a relatively basic model of 'random' pulses with the results of noise-like pulse modelling in mode-locked fibre lasers based on coupled non-linear Schrödinger equations demonstrates that it adequately reproduces temporal and
more » ... l properties of noise-like pulses as well as correlation between adjacent modes so that it's possible to use the proposed model for highly efficient simulations of promising applications of noise-like pulses, such as material processing, non-linear frequency conversion, microscopy, and others.
doi:10.1117/12.2211603 fatcat:vxc46hd2hjbkzomrpvgk75wjpa

Segmentation methods of OCR systems in problems of automatic processing of archival documents

Sergey Viktorovich Kuleshov, Sergey Vladimirovich Smirnov
2014 Труды СПИИРАН  
., Smirnov S.V. Segmentation methods of OCR systems in problems of automatic processing of archival documents. Abstract.  ...  ., Smirnov S.V. Segmentation methods of OCR systems in problems of automatic processing of archival documents.  ... 
doi:10.15622/sp.16.3 fatcat:u2p4wiy7z5gonnrpiv7hvrbdum
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