Search Results - "Samsonov, S."

High-Power Tunable Source of Chaotic Radiation Based on a Ka-Band Helical Gyro-BWO by Rozental, Roman M., Samsonov, S. V., Bogdashov, A. A., Gachev, I. G., Ginzburg, N. S.

“…We present results of experiments where Ka-band chaotic oscillation regimes with a bandwidth of about 1 GHz have been obtained in a pulsed gyrotron backward…”
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Variance reduction for Markov chains with application to MCMC by Belomestny, D., Iosipoi, L., Moulines, E., Naumov, A., Samsonov, S.

“…In this paper, we propose a novel variance reduction approach for additive functionals of Markov chains based on minimization of an estimate for the asymptotic…”
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Multitube Helical-Waveguide Gyrotron Traveling-Wave Amplifier: Device Concept and Electron-Optical System Modeling by Samsonov, S. V., Leshcheva, K. A., Manuilov, V. N.

“…A multitube configuration for a gyrotron traveling-wave amplifier (gyro-TWA) that is based on the use of one multibeam electron gun and several parallel…”
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Lengthy Testing of a K -Band Multifrequency Gyro-TWT With Double-Disk External Reflector by Rozental, R. M., Samsonov, S. V., Bogdashov, A. A., Gachev, I. G.

“…We present the results of experimental investigations of multifrequency oscillations in a [Formula Omitted]-band gyrotron traveling-wave tube (gyro-TWT) with…”
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The Iquique earthquake sequence of April 2014: Bayesian modeling accounting for prediction uncertainty by Duputel, Z., Jiang, J., Jolivet, R., Simons, M., Rivera, L., Ampuero, J.-P., Riel, B., Owen, S. E., Moore, A. W., Samsonov, S. V., Ortega Culaciati, F., Minson, S. E.

“…The subduction zone in northern Chile is a well‐identified seismic gap that last ruptured in 1877. On 1 April 2014, this region was struck by a large…”
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Variance reduction for additive functionals of Markov chains via martingale representations by Belomestny, D., Moulines, E., Samsonov, S.

“…In this paper, we propose an efficient variance reduction approach for additive functionals of Markov chains relying on a novel discrete-time martingale…”
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The collapse of Bárðarbunga caldera, Iceland by Riel, B., Milillo, P., Simons, M., Lundgren, P., Kanamori, H., Samsonov, S.

“…Lying below Vatnajökull ice cap in Iceland, Bárðarbunga stratovolcano began experiencing wholesale caldera collapse in 2014 August 16, one of the largest such…”
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On the Problem of Optimal Stimulation of Demand by Aseev, A. S., Samsonov, S. P.

“…We study the problem of optimal stimulation of demand based on a controlled version of Kaldor’s business cycle model. Using the approximation method, we prove…”
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Constructing Reachable Sets for a Class of Nonsmooth Control Systems on a Plane by Aseev, A. S., Samsonov, S. P.

“…A way of determining the approximate boundary of a reachable set is proposed for a class of nonsmooth controlled dynamic systems on a plane in economics. The…”
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Diffusion Approximations and Control Variates for MCMC by Brosse, N., Durmus, A., Meyn, S., Moulines, E., Samsonov, S.

“…A new method is introduced for the construction of control variates to reduce the variance of additive functionals of Markov Chain Monte Carlo (MCMC) samplers…”
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In silico and in vitro mapping of specificity patterns of glycosaminoglycans towards cysteine cathepsins B, L, K, S and V by Bojarski, K.K., Sage, J., Lalmanach, G., Lecaille, F., Samsonov, S.A.

“…Human cysteine cathepsins are lysosomal proteases, which are involved in different biological processes. Their enzymatic activity can be regulated by…”
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Beamstrahlung-enhanced disruption in beam–beam interaction by Samsonov, A S, Nerush, E N, Kostyukov, I Yu, Filipovic, M, Baumann, C, Pukhov, A

“…The radiation reaction (beamstrahlung) effect on particle dynamics during interaction of oppositely charged beams is studied. It is shown that the beam…”
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Radiation Input/Output System in a Ten-Barrel W-Band Gyrotron-Type Traveling-Wave Tube with Helically Corrugated Waveguides by Bogdashov, A. A., Samsonov, S. V.

“…We present a version of the radiation input/output system with polarization division of signals and a single oversized window developed for a modification of…”
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Constructing a Controllability Set for One Second-Order System with a Phase Constraint by Goncharova, M. N., Samsonov, S. P.

“…The authors investigate the problem of performance with a phase constraint. The object’s behavior is described by a system of second-order differential…”
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Mapping and monitoring geological hazards using optical, LiDAR, and synthetic aperture RADAR image data by Joyce, K. E., Samsonov, S. V., Levick, S. R., Engelbrecht, J., Belliss, S.

“…Geological hazards and their effects are often geographically widespread. Consequently, their effective mapping and monitoring is best conducted using…”
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Isotopic Variability in Bone Collagen of Short-Tailed Albatrosses (Phoebastria albatrus) in the Bering Sea Area during the Holocene by Krylovich, O. A., Samsonov, S. V., Kuzmicheva, E. A., Savinetsky, A. B.

“…The short-tailed albatross ( Phoebastria albatrus ) is a rare bird species today, numbers of which declined significantly in the Holocene due to human hunting…”
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Oblique slip on the Puysegur subduction interface in the 2009 July MW 7.8 Dusky Sound earthquake from GPS and InSAR observations: implications for the tectonics of southwestern New Zealand by Beavan, J., Samsonov, S., Denys, P., Sutherland, R., Palmer, N., Denham, M.

“…The MW 7.8 Dusky Sound earthquake of 2009 July 15 was the largest earthquake in New Zealand in the past ∼80 yr and is the only major subduction interface…”
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Sectioned Gyrotron Backward-Wave Oscillator with a Zigzag-Shaped Quasioptical System: Spatiotemporal Theory and Some of Its Results by Novak, E. M., Savilov, A. V., Samsonov, S. V.

“…We develop the spatiotemporal theory of a gyrotron backward-wave oscillator (gyro-BWO) which allows broad frequency tuning and is based on the use of a…”
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Modulation of the expression and activity of cathepsin S in reconstructed human skin by neohesperidin dihydrochalcone by Sage, J., Renault, J., Domain, R., Bojarski, K.K., Chazeirat, T., Saidi, A., Leblanc, E., Nizard, C., Samsonov, S.A., Kurfurst, R., Lalmanach, G., Lecaille, F.

“…•NHDC is a potent reversible and competitive inhibitor of Cat S.•Cat S expression and activity are dampened in NHDC-treated keratinocytes.•Cat S is…”
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Geomagnetic and ionospheric response to the interplanetary shock on January 24, 2012 by Belakhovsky, V. B., Pilipenko, V. A., Sakharov, Ya. A., Lorentzen, D. L., Samsonov, S. N.

“…We have examined multi-instrument observations of the magnetospheric and ionospheric response to the interplanetary shock on January 24, 2012. Apart from…”
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