381 results on '"Zheleznyak, A. P."'
Search Results
52. Power Series of One Variable with Condition of Logarithmical Convexity
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Zheleznyak, A. V.
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- 2020
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53. PG 1115+080: variations of the A2/A1 flux ratio and new values of the time delays
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Tsvetkova, V. S., Vakulik, V. G., Shulga, V. M., Schild, R. E., Dudinov, V. N., Minakov, A. A., Nuritdinov, S. N., Artamonov, B. P., Kochetov, A. Ye., Smirnov, G. V., Sergeyev, A. A., Konichek, V. V., Sinelnikov, I. Ye., Zheleznyak, A. P., Bruevich, V. V., Gaysin, R., Akhunov, T., and Burkhonov, O.
- Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics - Abstract
We report the results of our multicolor observations of PG 1115+080 with the 1.5-m telescope of the Maidanak Observatory (Uzbekistan, Central Asia) in 2001-2006. Monitoring data in filter R spanning the 2004, 2005 and 2006 seasons (76 data points) demonstrate distinct brightness variations of the source quasar with the total amplitude of almost 0.4 mag. Our R light curves have shown image C leading B by 16.4d and image (A1+A2) by 12d that is inconsistent with the previous estimates obtained by Schechter et al. in 1997 - 24.7d between B and C and 9.4d between (A1+A2) and C. The new values of time delays in PG 1115+080 must result in larger values for the Hubble constant, thus reducing difference between its estimates taken from the gravitational lenses and with other methods. Also, we analyzed variability of the A2/A1 flux ratio, as well as color changes in the archetypal "fold" lens PG 1115+080. We found the A1/A2 flux ratio to grow during 2001-2006 and to be larger at longer wavelengths. In particular, the A2/A1 flux ratio reached 0.85 in filter I in 2006. We also present evidence that both the A1 and A2 images might have undergone microlensing during 2001-2006, with the descending phase for A1 and initial phase for A2. We find that the A2/A1 flux ratio anomaly in PG 1115 can be well explained both by microlensing and by finite distance of the source quasar from the caustic fold., Comment: 14 pages, 7 figures, 8 tables, Accepted for publication in MNRAS
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- 2010
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54. Microlensing variability in FBQ 0951+2635: short-timescale events or a long-timescale fluctuation?
- Author
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Shalyapin, V. N., Goicoechea, L. J., Koptelova, E., Artamonov, B. P., Sergeyev, A. V., Zheleznyak, A. P., Akhunov, T. A., Burkhonov, O. A., Nuritdinov, S. N., and Ullan, A.
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Astrophysics - Astrophysics of Galaxies ,Astrophysics - Cosmology and Nongalactic Astrophysics - Abstract
We present and analyse new R-band frames of the gravitationally lensed double quasar FBQ 0951+2635. These images were obtained with the 1.5m AZT-22 Telescope at Maidanak (Uzbekistan) in the 2001-2006 period. Previous results in the R band (1999-2001 period) and the new data allow us to discuss the dominant kind of microlensing variability in FBQ 0951+2635. The time evolution of the flux ratio A/B does not favour the continuous production of short-timescale (months) flares in the faintest quasar component B (crossing the central region of the lensing galaxy). Instead of a rapid variability scenario, the observations are consistent with the existence of a long-timescale fluctuation. The flux ratio shows a bump in the 2003-2004 period and a quasi-flat trend in more recent epochs. Apart from the global behaviour of A/B, we study the intra-year variability over the first semester of 2004, which is reasonably well sampled. Short-timescale microlensing is not detected in that period. Additional data in the i band (from new i-band images taken in 2007 with the 2m Liverpool Robotic Telescope at La Palma, Canary Islands) also indicate the absence of short-timescale events in 2007., Comment: 9 pages, 5 figures, 3 tables, accepted for publication in MNRAS
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- 2009
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55. A large topographic feature on the surface of the trans-Neptunian object (307261) 2002 MS4 measured from stellar occultations
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Rommel, F. L., primary, Braga-Ribas, F., additional, Ortiz, J. L., additional, Sicardy, B., additional, Santos-Sanz, P., additional, Desmars, J., additional, Camargo, J. I. B., additional, Vieira-Martins, R., additional, Assafin, M., additional, Morgado, B. E., additional, Boufleur, R. C., additional, Benedetti-Rossi, G., additional, Gomes-Júnior, A. R., additional, Fernández-Valenzuela, E., additional, Holler, B. J., additional, Souami, D., additional, Duffard, R., additional, Margoti, G., additional, Vara-Lubiano, M., additional, Lecacheux, J., additional, Plouvier, J. L., additional, Morales, N., additional, Maury, A., additional, Fabrega, J., additional, Ceravolo, P., additional, Jehin, E., additional, Albanese, D., additional, Mariey, H., additional, Cikota, S., additional, Ruždjak, D., additional, Cikota, A., additional, Szakáts, R., additional, Baba Aissa, D., additional, Gringahcene, Z., additional, Kashuba, V., additional, Koshkin, N., additional, Zhukov, V., additional, Fişek, S., additional, Çakir, O., additional, Özer, S., additional, Schnabel, C., additional, Schnabel, M., additional, Signoret, F., additional, Morrone, L., additional, Santana-Ros, T., additional, Pereira, C. L., additional, Emilio, M., additional, Burdanov, A. Y., additional, de Wit, J., additional, Barkaoui, K., additional, Gillon, M., additional, Leto, G., additional, Frasca, A., additional, Catanzaro, G., additional, Sanchez, R. Zanmar, additional, Tagliaferri, U., additional, Di Sora, M., additional, Isopi, G., additional, Krugly, Y., additional, Slyusarev, I., additional, Chiorny, V., additional, Mikuž, H., additional, Bacci, P., additional, Maestripieri, M., additional, Grazia, M. D., additional, de la Cueva, I., additional, Yuste-Moreno, M., additional, Ciabattari, F., additional, Kozhukhov, O. M., additional, Serra-Ricart, M., additional, Alarcon, M. R., additional, Licandro, J., additional, Masi, G., additional, Bacci, R., additional, Bosch, J. M., additional, Behem, R., additional, Prost, J.-P., additional, Renner, S., additional, Conjat, M., additional, Bachini, M., additional, Succi, G., additional, Stoian, L., additional, Juravle, A., additional, Carosati, D., additional, Gowe, B., additional, Carrillo, J., additional, Zheleznyak, A. P., additional, Montigiani, N., additional, Foster, C. R., additional, Mannucci, M., additional, Ruocco, N., additional, Cuevas, F., additional, Di Marcantonio, P., additional, Coretti, I., additional, Iafrate, G., additional, Baldini, V., additional, Collins, M., additional, Pál, A., additional, Csák, B., additional, Fernández-Garcia, E., additional, Castro-Tirado, A. J., additional, Hudin, L., additional, Madiedo, J. M., additional, Anghel, R. M., additional, Calvo-Fernández, J. F., additional, Valvasori, A., additional, Guido, E., additional, Gherase, R. M., additional, Kamoun, S., additional, Fafet, R., additional, Sánchez-González, M., additional, Curelaru, L., additional, Vîntdevară, C. D., additional, Danescu, C. A., additional, Gout, J.-F., additional, Schmitz, C. J., additional, Sota, A., additional, Belskaya, I., additional, Rodríguez-Marco, M., additional, Kilic, Y., additional, Frappa, E., additional, Klotz, A., additional, Lavayssière, M., additional, Oliveira, J. Marques, additional, Popescu, M., additional, Mammana, L. A., additional, Fernández-Lajús, E., additional, Schmidt, M., additional, Hopp, U., additional, Komžík, R., additional, Pribulla, T., additional, Tomko, D., additional, Husárik, M., additional, Erece, O., additional, Eryilmaz, S., additional, Buzzi, L., additional, Gährken, B., additional, Nardiello, D., additional, Hornoch, K., additional, Sonbas, E., additional, Er, H., additional, Burwitz, V., additional, Sybilski, P. Waldemar, additional, Bykowski, W., additional, Müller, T. G., additional, Ogloza, W., additional, Gonçalves, R., additional, Ferreira, J. F., additional, Ferreira, M., additional, Bento, M., additional, Meister, S., additional, Bagiran, M. N., additional, Tekeş, M., additional, Marciniak, A., additional, Moravec, Z., additional, Delinčák, P., additional, Gianni, G., additional, Casalnuovo, G. B., additional, Boutet, M., additional, Sanchez, J., additional, Klemt, B., additional, Wuensche, N., additional, Burzynski, W., additional, Borkowski, M., additional, Serrau, M., additional, Dangl, G., additional, Klös, O., additional, Weber, C., additional, Urbaník, M., additional, Rousselot, L., additional, Kubánek, J., additional, André, P., additional, Colazo, C., additional, Spagnotto, J., additional, Sickafoose, A. A., additional, Hueso, R., additional, Sánchez-Lavega, A., additional, Fisher, R. S., additional, Rengstorf, A. W., additional, Perelló, C., additional, Dascalu, M., additional, Altan, M., additional, Gazeas, K., additional, de Santana, T., additional, Sfair, R., additional, Winter, O. C., additional, Kalkan, S., additional, Canales-Moreno, O., additional, Trigo-Rodríguez, J. M., additional, Tsamis, V., additional, Tigani, K., additional, Sioulas, N., additional, Lekkas, G., additional, Bertesteanu, D. N., additional, Dumitrescu, V., additional, Wilberger, A. J., additional, Barnes, J. W., additional, Fieber-Beyer, S. K., additional, Swaney, R. L., additional, Fuentes, C., additional, Mendez, R. A., additional, Dumitru, B. D., additional, Flynn, R. L., additional, and Wake, D. A., additional
- Published
- 2023
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56. 'Bathing in the Colour': from the Ra Therapy to Contemporary Colour and Light Environment
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Olga Zheleznyak
- Subjects
livability of the environment ,ra-therapy / chromotherapy ,expansion of the colour ,biological colour behavior ,ambivalence of chromaticity ,“colour hunger” ,colour images ,polychromic renovation of the urban environment ,videoecology ,colour and light environment of the interiors ,current colour trends ,colourful light ,Architecture ,NA1-9428 - Abstract
Studying the prospects of the colour phenomenon for the formation of the livable environment necessitates consideration of the integrity of the space of colour effect, including the biological colour behavior; intended Ra-therapy / chromotherapy; permanent polychromy of the environment constantly influencing the human organism; involvement of chromaticity in the ideas of livability of the environment and a healthy lifestyle; as well as the necessity of permanent monitoring in the constantly changing conditions of the reality.
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- 2019
57. METHOD OF ORTHOGONAL FREQUENCY MANIPULATION SIGNAL WITHOUT RUPTURE OF THE PHASE FOR THE ESTIMATION OF SECURITY FROM LEAK OF SPEECH SIGNALS IN THE DIGITAL FORM
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V. K. Zheleznyak and D. S. Ryabenko
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речевой сигнал ,манипуляция сигнала ,спектр сигнала ,оценка защищенности сигнала ,Electronics ,TK7800-8360 - Abstract
The optimum frequency-manipulated signal for an estimation of security of channels of information leakage in the digital form is investigated. The system of signals used for an information transfer as set of signals, united by a uniform rule of construction is considered. The optimum system of signals providing the maximum noise stability at the minimum relations of energy of bit to spectral density of capacity of noise in channels of information leakage, methods of an estimation of security of discrete systems of signals in information leakage channels are offered at influence of noise of high level of type white noise, and also a choice and a substantiation of an optimum signal which will allow to estimate security of channels of information leakage.
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- 2019
58. COMPENSATION DELAY TIME OF MEASURING SIGNAL AT THE LEAKAGE CHANNEL OUTPOOT OF SPEECH INFORMATION
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V. K. Zheleznyak and I. B. Burachonak
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security assessment ,delay compensation ,speech signal ,information leakage channel ,Electronics ,TK7800-8360 - Abstract
Evaluation method of security assessment a speech signal in information leakage channel under high-level noise with significant Bandpass flatness by complex measuring signal with a large base in equal intelligibility bands is proposed. Using the mathematical approach a derivative of cross-correlation function between complex measuring signal with a large base at the inlet and outlet channel speech information leakage allows to determine the position of the axis points in which derivative is zero. After that its time delay and frequency shift at the output of leakage channel of speech information within а minimum mean square error are determined. Compensation with time delay high accuracy and frequency shift complex measuring signal with a large base at the output of information leakage channel allowed to significantly improving the accuracy and sensitivity of the assessment of protection a speech signal in information leakage channel.
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- 2019
59. ASSESSMENT WITH HIGH PRECISION OF MEASUREMENT SIGNAL PARAMETERS USING COMPENSATION OF ITS TIME DELAY IN LEAKAGE CHANNELS OF SPEECH INFORMAYTION
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V. K. Zheleznyak and I. B. Burachonak
- Subjects
protection of the speech signal ,information leakage channel ,interrelation time-frequency processing ,complex measurement signal ,Electronics ,TK7800-8360 - Abstract
This paper proposes to make an assessment of speech signal protection in information leakage channel by frequency-time processing of complex measurement signal with a large base within a band equal intelligibility using Hilbert transform to represent it in an analytical form and preliminary reduction of the detection threshold n-multiples sequential synchronous accumulation of spectral components using direct and inverse fast Fourier transform. High accuracy and sensitivity assessment of the parameters of a complex measurement signal with a large base in information leakage channel on background high level of noise achieved by compensating with a minimum mean square error its time delay and frequency offset.
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- 2019
60. Algorithm for Evaluation of Bipolar Defects in Anterior Instability of the Shoulder
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V. V. Khominets, R. V. Gladkov, I. S. Zheleznyak, A. S. Grankin, D. A. Volov, and А. A. Emelyantsev
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shoulder joint instability ,bipolar defects ,glenoid bone defect ,hill-sachs fracture ,bankart fracture ,Orthopedic surgery ,RD701-811 - Abstract
Purpose of the study — to justify the algorithm for evaluation of bipolar defects in anterior shoulder instrability using the most accurate, statistically significant and reproducible methods which would make the algorithm applicable in practical surgery.Materials and methods. The authors established 4 groups with 6 patients in each with shoulder instability, group distribution was based on glenoid defect size: small (25%). All 24 patients underwent 3D-CT, 3D VIBE MRI and shoulder arthroscopy. Measurements were taken by 7 specialists 5 of whom measured defect during arthroscopy. Glenoid defect was measured by linear and sectional relation methods. Pico method on 3D-CT was taken as the “golden standard”. Accuracy was verified by analysis of variance with post-hoc comparison. Reproducibility was evaluated by intraclass correlation coefficient.Results. All groups excluding the one with massive glenoid defects demonstrated significant differences from the model (p≤0,05) for measurements during arthroscopy and examinations by 3D-CT and 3D VIBE MRI. Restrospective analysis confirmed the least accuracy and the worst reproducibility of visual evaluation of glenoid defects less than 25%. Sectional relation method on 3D-CT had the maximum accuracy and reproducibility in all groups (PE = 1,29%±2,39%, ICC = 0,756-0,856), excluding the group with massive defects, where researched measurement methods had close accuracy when applied on 3D-CT, 3D VIBE MRI and during arthroscopy. Linear relation method on 3D-CT overestimated the defect volume at 2,1-7,9% and demonstrated less reliable reproducibility (PE = 3,22%±5,31%, ICC = 0,612-0,621). The highest error (up to 7,9%) was demonstrated by linear method in case of borderline defects in the III group of 20-25%. Insufficient conformity of results for linear (ICC = 0,42) method and moderate conformity for sectional (ICC = 0,62) method were observed during comparison of 3D VIBE MRI with 3D-CT. MRI underestimated the value of small defects and overestimated large defects. Reproducibility of measurements on 3D-CT by different operators was moderate for visual (ICC=0,594) and linear methods (ICC = 0,621) and good for sectional method (ICC = 0,756). Reproducibility of measurements by each operator also was moderate for visual and linear methods (ICC = 0,553 и ICC = 0,612) and good for sectional method (ICC = 0,856). The authors suggested an algorithm for selection of examination method and measurements for defects of articular surfaces which also considers the main factors of prognosis and risk of recurrent instability.Conclusion. Sectional relation method on 3D-CT is the most precise and reproducible method of glenoid defect measurements used in the clinical practice. MRI use without CT is inadmissible for bipolar defects of borderline size. Suggested algorithm allows not to make CT examination at extreme ISIS values and increases the share of osteoplastic surgeries due to identification of off-track injuries with glenoid defects of borderline size (15-25%).
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- 2019
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61. Numerical modeling of nonlinear hydrodynamics of the coastal areas
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Izmail Kantardgi, Mark Zheleznyak, and Alexander Anshakov
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numerical modeling ,coastal engineering ,chain of models ,interactive model ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Building construction ,TH1-9745 - Abstract
The nearshore hydrodynamic fields are produced by the nonlinear interactions of the shoaling waves of different time scales and currents. To simulate the wind wave propagated to the coasts, wave generated nearshore currents, nonlinear-dispersive wave transformation and wave diffraction in interaction with coastal and port structure, sediment transport and coastal erosion, the chains of the models should be used. The objective of the paper is to provide an overview of the results of the application of the model chains for the assessment of the wave impacts on new port designed at the Ob lip, Kara Sea to demonstrate needs for further development of the nonlinear models for the coastal engineering applications. The open source models WaveWatch III and SWAN has been used to simulate wave statistics of the dedicated areas of the studied coastal areas in high resolution to calculate the statistical parameters of the extreme wave approaching coastal zone construction in accordance with coastal engineering standards.
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- 2019
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62. Permafrost is warming at a global scale
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Boris K. Biskaborn, Sharon L. Smith, Jeannette Noetzli, Heidrun Matthes, Gonçalo Vieira, Dmitry A. Streletskiy, Philippe Schoeneich, Vladimir E. Romanovsky, Antoni G. Lewkowicz, Andrey Abramov, Michel Allard, Julia Boike, William L. Cable, Hanne H. Christiansen, Reynald Delaloye, Bernhard Diekmann, Dmitry Drozdov, Bernd Etzelmüller, Guido Grosse, Mauro Guglielmin, Thomas Ingeman-Nielsen, Ketil Isaksen, Mamoru Ishikawa, Margareta Johansson, Halldor Johannsson, Anseok Joo, Dmitry Kaverin, Alexander Kholodov, Pavel Konstantinov, Tim Kröger, Christophe Lambiel, Jean-Pierre Lanckman, Dongliang Luo, Galina Malkova, Ian Meiklejohn, Natalia Moskalenko, Marc Oliva, Marcia Phillips, Miguel Ramos, A. Britta K. Sannel, Dmitrii Sergeev, Cathy Seybold, Pavel Skryabin, Alexander Vasiliev, Qingbai Wu, Kenji Yoshikawa, Mikhail Zheleznyak, and Hugues Lantuit
- Subjects
Science - Abstract
Climate change strongly impacts regions in high latitudes and altitudes that store high amounts of carbon in yet frozen ground. Here the authors show that the consequence of these changes is global warming of permafrost at depths greater than 10 m in the Northern Hemisphere, in mountains, and in Antarctica.
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- 2019
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63. Image and Territorial Branding: a modern trend and/or a topical discourse of the present-day life and culture
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Olga Zheleznyak
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image ,authenticity ,branding of the territory ,identity ,imagology ,irkutsk ,Architecture ,NA1-9428 - Abstract
Image and branding are modern trends and a topical discourse, a simulation space, a virtual world and the facts of life of civilization, an eternal reflection of authenticity and universality of the promoted product. They influence the achievement of positive reputation of states, regions/territories, cities, corporations/firms, entities, goods and their investment attractiveness. Working with a real space, milieu and culture of the territory allows for revealing the most typical features of the image of the territory and demonstrates both individual, personalized interpretations of the image and the most popular (often already branding) images of the ‘place’.
- Published
- 2018
64. First robotic monitoring of a lensed quasar: intrinsic variability of SBS 0909+532
- Author
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Goicoechea, L. J., Shalyapin, V. N., Koptelova, E., Gil-Merino, R., Zheleznyak, A. P., and Ullan, A.
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Astrophysics - Abstract
To go into the details about the variability of the double quasar SBS 0909+532, we designed a monitoring programme with the 2 m Liverpool Robotic Telescope in the r Sloan filter, spanning 1.5 years from 2005 January to 2006 June. The r-band light curves of the A and B components, several cross-correlation techniques and a large number of simulations (synthetic light curves) lead to a robust delay of 49 +/- 6 days (1-sigma interval) that agrees with our previous results (the B component is leading). Once the time delay and the magnitude offset are known, the magnitude- and time-shifted light curve of image A is subtracted from the light curve of image B. This difference light curve of SBS 0909+532 is consistent with zero, so any possible extrinsic signal must be very weak, i.e., the observed variability in A and B is basically due to observational noise and intrinsic signal. We then make the combined light curve and analyse its statistical properties (structure functions). The structure function of the intrinsic luminosity is fitted to predictions of simple models of two physical scenarios: accretion disc instabilities and nuclear starbursts. Although no simple model is able to accurately reproduce the observed trend, symmetric triangular flares in an accretion disc seems to be the best option to account for it., Comment: 27 pages, 9 figures and 2 tables (including information on the robotic monitoring and the final fluxes). Accepted for publication in New Astronomy
- Published
- 2007
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65. Time delay of SBS 0909+532
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Ullan, A., Goicoechea, L. J., Zheleznyak, A. P., Koptelova, E., Bruevich, V. V., Akhunov, T., and Burkhonov, O.
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Astrophysics - Abstract
The time delays between the components of a lensed quasar are basic tools to analyze the expansion of the Universe and the structure of the main lens galaxy halo. In this paper, we focus on the variability and time delay of the double system SBS 0909+532A,B as well as the time behaviour of the field stars. We use VR optical observations of SBS 0909+532A,B and the field stars in 2003. The frames were taken at Calar Alto, Maidanak and Wise observatories, and the VR light curves of the field stars and quasar components are derived from aperture and point-spread function fitting methods. We measure the R-band time delay of the system from the chi-square and dispersion techniques and 1000 synthetic light curves based on the observed records. One nearby field star (SBS 0909+532c) is found to be variable, and the other two nearby field stars are non-variable sources. With respect to the quasar components, the R-band records seem more reliable and are more densely populated than the V-band ones. The observed R-band fluctuations permit a pre-conditioned measurement of the time delay. From the chi-square minimization, if we assume that the quasar emission is observed first in B and afterwards in A (in agreement with basic observations of the system and the corresponding predictions), we obtain a delay of - 45 (+ 1)/(- 11) days (95% confidence interval). The dispersion technique leads to a similar delay range. A by-product of the analysis is the determination of a totally corrected flux ratio in the R band (corrected by the time delay and the contamination due to the galaxy light). Our 95% measurement of this ratio (0.575 +/- 0.014 mag) is in excellent agreement with previous results from contaminated fluxes at the same time of observation., Comment: 26 pages, 15 figures, Astronomy and Astrophysics (see also http://www.astro.ulg.ac.be/RPub/Colloques/JENAM/proceedings/proceedings.html - Quasars Section)
- Published
- 2006
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66. Color Effects Associated with the 1999 Microlensing Brightness Peaks in Gravitationally Lensed Quasar Q2237+0305
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Vakulik, V. G., Schild, R. E., Dudinov, V. N., Minakov, A. A., Nuritdinov, S. N., Tsvetkova, V. S., Zheleznyak, A. P., Konichek, V. V., Sinelnikov, I. Ye., Burkhonov, O. M., Artamonov, B. P., and Bruevich, V. V.
- Subjects
Astrophysics - Abstract
Photometry of the Q2237+0305gravitational lens in VRI spectral bands with the 1.5-m telescope of the high-altitude Maidanak observatory in 1995-2000 is presented. Monitoring of Q2237+0305 in July-October 2000, made at nearly daily basis, did not reveal rapid (night-to-night and intranight) variations of brightness of the components during this time period. Rather slow changes of magnitudes of the components were observed, such as 0.08 mag fading of B and C components and 0.05 mag brightening of D in R band during July 23 - October 7, 2000. By good luck three nights in 1999 were almost at the time of the strong brightness peak of image C, and approximately in the middle of the ascending slope of the image A brightness peak. The C component was the most blue one in the system in 1998 and 1999, having changed its (V-I) color from 0.56 mag to 0.12 mag since August 1997, while its brightness increased almost 1.2 mag during this time period. The A component behaved similarly between August 1998 and August 2000, having become 0.47 mag brighter in R, and at the same time, 0.15 mag bluer. A correlation between the color variations and variations of magnitudes of the components is demonstrated to be significant and reaches 0.75, with a regression line slope of 0.33. A color (V-I) vrs color (V-R) plot shows the components settled in a cluster, stretched along a line with a slope of 1.31. Both slopes are noticeably smaller than those expected if a standard galactic interstellar reddening law were responsible for the differences between the colors of images and their variations over time. We attribute the brightness and color changes to microlensing of the quasar's structure, which we conclude is more compact at shorter wavelengths, as predicted by most quasar models featuring an energizing central source., Comment: 14 pages, 7 figures, LaTeX, submitted to A&A
- Published
- 2003
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67. Monitoring of the Central Region of the Globular Cluster M15 = NGC 7078: New Variable Stars
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Zheleznyak, Alexander P. and Kravtsov, Valery V.
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Astrophysics - Abstract
We obtained a series of more than two hundred R-band CCD images for the crowded central (115"x77") region of the metal-poor globular cluster M15 with an angular resolution of 0.5"-0.9" in most images. Optimal image subtraction was used to identify variable stars. Brightness variations were found in 83 stars, 55 of which were identified with known cluster variables and the remaining 28 are candidates for new variables. Two of them are most likely SX Phe variables. The variability type of two more stars is incertain. The remaining stars were tentatively classified as RR Lyrae variables. A preliminary analysis of published data and our results shows that the characteristics of RR Lyrae variables in the densest part (r<35") of the cluster probably change. More specifically, the maximum of the period distribution of first- and second-overtone (RR1, RR2) pulsating stars shifts toward shorter periods; i.e., there is an increase in the fraction of stars pulsating with periods < 0.3d and a deficiency of stars with 0.35d-0.40d. The ratio of the number of these short-period RR Lyrae variables to the number of fundamental-tone (RR0) pulsating variables changes appreciably. We found and corrected the error of transforming the coordinates of variables V128-155 in M15 to the coordinate system used in the catalog of variable stars in globular clusters., Comment: 29 pages, 6 figures, 2 tables
- Published
- 2003
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68. Past and Future of Permafrost Monitoring: Stability of Russian Energetic Infrastructure
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Vladimir P. Melnikov, Victor I. Osipov, Anatoli V. Brouchkov, Svetlana V. Badina, Marat R. Sadurtdinov, Dmitry S. Drozdov, Galina V. Malkova, Mikhail N. Zheleznyak, Oleg V. Zhdaneev, Nikolay A. Ostarkov, Alexei B. Osokin, Dmitrii O. Sergeev, Vladimir A. Dubrovin, Mikhail E. Kuznetsov, Konstantin N. Frolov, Andrey G. Alekseev, and Roman Y. Fedorov
- Subjects
climate warming ,permafrost ,monitoring ,thaw ,damage ,energetic infrastructure ,Technology - Abstract
This study is an attempt to suggest a new state system of permafrost monitoring, primarily for energetic infrastructure, based on past approaches and achievements in Russia for over a hundred years of Arctic studies. The methodology of this study is based on general theoretical methods of scientific research. Historical (retrospective analysis of the development of the monitoring system of long-term permafrost in Russia) and logical (inductive generalization) methods were applied. The structure and methods of permafrost monitoring in the Soviet Union and new technologies used nowadays to establish permafrost monitoring systems, taking into account modern Arctic energetic development, have been analyzed.
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- 2022
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69. Errors of Earth Gravity Models as Depending on Seafloor Morphology
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Bekhterev, S. V., Drobyshev, M. N., Zheleznyak, L. K., Koneshov, V. N., Mikhailov, P. S., and Solov’ev, V. N.
- Published
- 2019
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70. Improving the Accuracy of Marine Gravimeters
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Sokolov, A. V., Krasnov, A. A., and Zheleznyak, L. K.
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- 2019
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71. Around the Clock Observations of the Q0957+561 A,B Gravitationally Lensed Quasar II: Results for the second observing season
- Author
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Colley, Wesley N., Schild, Rudolph E., Abajas, Cristina, Alcalde, David, Aslan, Zeki, Bikmaev, Ilfan, Chavushyan, Vahram, Chinarro, Luis, Cournoyer, Jean-Philippe, Crowe, Richard, Dudinov, Vladimir, Kathinka, Anna, Evans, Dalland, Jeon, Young-Beom, Goicoechea, Luis J., Golbasi, Orhan, Khamitov, Irek, Kjernsmo, Kjetil, Lee, Hyun Ju, Lee, Jonghwan, Lee, Ki Won, Lee, Myung Gyoon, Lopez-Cruz, Omar, Mediavilla, Evencio, Moffatt, Anthony F. J., Mujica, Raul, Ullan, Aurora M., Oscoz, Alexander, Park, Myeong-Gu, Purves, Norman, Sakhibullin, Nail, Sinelnikov, Igor, Stabell, Rolf, Stockton, Alan, Teuber, Jan, Thompson, Roy, Woo, Hwa-Sung, and Zheleznyak, Alexander
- Subjects
Astrophysics - Abstract
We report on an observing campaign in March 2001 to monitor the brightness of the later arriving Q0957+561 B image in order to compare with the previously published brightness observations of the (first arriving) A image. The 12 participating observatories provided 3543 image frames which we have analyzed for brightness fluctuations. From our classical methods for time delay determination, we find a 417.09 +/- 0.07 day time delay which should be free of effects due to incomplete sampling. During the campaign period, the quasar brightness was relatively constant and only small fluctuations were found; we compare the structure function for the new data with structure function estimates for the 1995--6 epoch, and show that the structure function is statistically non-stationary. We also examine the data for any evidence of correlated fluctuations at zero lag. We discuss the limits to our ability to measure the cosmological time delay if the quasar's emitting surface is time resolved, as seems likely., Comment: AAS LaTeX, 5 PostScript figures
- Published
- 2002
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72. Development of Innovative Methodological Support for Marine Gravimetric Surveys
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Koneshov, V. N., Zheleznyak, L. K., Soloviev, V. N., and Mikhailov, P. S.
- Published
- 2018
- Full Text
- View/download PDF
73. 'Round the Clock Observations of the Q0957+561 A,B Gravitationally Lensed Quasar
- Author
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Colley, Wesley N., Schild, Rudolph E., Abajas, Cristina, Alcalde, David, Aslan, Zeki, Barrena, Rafael, Dudinov, Vladimir, Khamitov, Irek, Kjernsmo, Kjetil, Lee, Hyun Ju, Lee, Jonghwan, Lee, Myung Gyoon, Licandro, Javier, Maoz, Dan, Mediavilla, Evencio, Motta, Veronica, Munoz, Jose, Oscoz, Alex, Serra-Ricart, Miquel, Sinelnikov, Igor, Stabell, Rolf, Teuber, Jan, and Zheleznyak, Alexander
- Subjects
Astrophysics - Abstract
An observing campaign with 10 participating observatories has undertaken to monitor the optical brightness of the Q0957 gravitationally lensed quasar for 10 consecutive nights in January 2000. The resulting A image brightness curve has significant brightness fluctuations and makes a photometric prediction for the B image light curve for a second campaign planned for 12-21 March 2001. The ultimate purpose is to determine the gravitational lens time delay to a fraction of an hour, and to seek evidence for rapid microlensing., Comment: 8 pages, AASTeX 4.0, accepted by the Astrophysical Journal
- Published
- 2001
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74. Comparison of experimental data and theoretical calculations for electrical resistivity and Hall coefficient in quasi-one-dimensional organic conductor (TMTSF)2PF6
- Author
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Yakovenko, Victor M. and Zheleznyak, Anatoley T.
- Subjects
Condensed Matter - Strongly Correlated Electrons - Abstract
The temperature dependences of the Hall coefficient and electrical resistivity recently measured by Moser et al. [Phys. Rev. Lett. 84, 2674 (2000)] in the quasi-one-dimensional organic conductor (TMTSF)2PF6 are quantitatively compared with our previous theoretical calculations [Synth. Met. 103, 2202 (1999); Eur. Phys. J. B 11, 385 (1999)]. We find a good agreement, albeit not with a fully consistent set of parameters for the two quantities, without appealing to the Luttinger liquid concept., Comment: 2 pages with 2 figures for ICSM-2000 proceedings. Uses elsart.cls and synmet.cls, which are provided. V.2: one reference updated
- Published
- 2000
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75. The Role of Endovascular Stents in an Experimental Model of Traumatic Arterial Occlusion – the Temporary Endo-Shunt
- Author
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Viktor A Reva, Marta J Madurska, Igor M Samokhvalov, Alexey V Denisov, Sergey Yu Telickiy, Alexey B Seleznev, Igor S Zheleznyak, Valery N Adamenko, and Kenji Inaba
- Subjects
Vascular Trauma ,Occlusion ,Covered Stent ,Bare Metal Stent ,Recanalization ,Endovascular Trauma Management ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 ,Surgery ,RD1-811 - Abstract
Background: The aim of this study was to evaluate patency following the deployment of a bare-metal stent (BMS) or covered stent (CS) across a traumatic occlusive peripheral arterial lesion and to estimate the feasibility of urgent stent placement for temporary endovascular shunting. Methods: Fifteen sheep (25–45 kg) underwent laparoscopic creation of a left external iliac artery (EIA) thrombosis by means of repeated clamping. Sixty minutes after achievement of thrombotic occlusion, animals were randomized into one of three groups: no-treatment (control group), a BMS group, or CS group. Animals were followed up for 30 days with no anticoagulants or anti-platelet drugs administered postoperatively. Doppler ultrasound, computed tomography angiography (CTA), and digital subtraction angiography (DSA) were used to evaluate EIA patency. Results: Stent implantation resulted in the restoration of in-line flow through the EIA in all cases. The peak systolic velocity (PSV) in the injured limb increased from 10 (0–16) to 31 (28–37) cm/s in the BMS group (p < 0.0001) and from 15 (7–18) to 24 (21–29) cm/s in the CS group (p = 0.043) immediately after stent deployment (both p = 0.001 compared with the control group). There was no difference in the PSV between the groups at post-injury day 3, and thereafter. Day-14 CTA and day-30 DSA demonstrated only one patent stent in each study group. Conclusions: Urgent stent (BMS or CS) implantation can restore arterial patency of a traumatic occlusion for a short period of time and serve as a temporary endovascular shunt. Distal embolization can complicate this procedure and worsen long-term patency.
- Published
- 2020
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76. 'Authentic Universality' of Celebrations
- Author
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Olga Zheleznyak and Mirya Korelina
- Subjects
celebration ,traditions ,authentic images ,identity ,image potential ,Architecture ,NA1-9428 - Abstract
Celebrations as a space integrating traditions and peculiarities of contemporary culture and immerging authentic images and customs in today’s realities is an important part of the existence of a “space”, a territory and a city. The ability of unique and autochronous peculiarities of celebrations to be integrated with universal standards makes it possible to use celebrations as an image system promoting the territory and its identity.
- Published
- 2020
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77. Ecological, geocryological and geotechnical conditions of the gas transportation system 'Force of Siberia'
- Author
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Mikhail N. Zheleznyak, Sergey I. Serikov, and Mark M. Shatz
- Subjects
selection of pipeline route ,specific engineering and geological conditions ,pipe laying and construction of system ,advantages and problems of chosen route ,Environmental sciences ,GE1-350 - Abstract
The subject of the paper is the response of the natural environment to various impacts associated with the oil and gas industry. The paper is devoted to the analysis of the current state of implementation of the project of development of the gas transportation system "Power of Siberia" in East and Southeast Siberia. The purpose of the study is to show the problems that arise at various stages of creating the object. That includes choosing the apropriate pipeline route and method of pipe laying. The project of gas transoptation system (GTS) "Power of Siberia" in East Siberia is being successfully implemented recently. The stages of exploration and design are completed, pipe is being layed. After successful research and design, one of the most important stages (pipe laying and system building in general) has started. Studying the seasonal and permafrost rocks is a very special direction in the general integrated system of engineering and geological knowledge. It is important to consider both studied parameters such as composition, structure, properties of rocks, and features of aggregate states of the object of research. Negative temperatures cause fundamental differences in the composition of rocks with the development of diverse underground ice, sometimes constituting up to 90% of the thickness, and other characteristics. The main results of ecological and geocryological research recently performed by Melnikov Permafrost Institute of the Siberian Branch of the Russian Academy of Sciences, which have revealed the main difficulties of the project and show the ways of their solution, are given. Advantages and features of the selected route in the specific engineering and geological conditions are described. The need for underground method of pipe laying is confirmed. It is concluded that complex and diverse natural conditions of the route of the GTS determine a number of specific problems at the stages of construction and operation within areas with permafrost soils and dangerous geocryological and engineering-geocryological processes. It is possible to avoid them only while studying the most difficult areas. Recommendations on the structure of department of engineering and geocryological monitoring are given.
- Published
- 2018
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78. Microwave sound effect of conversion of modulated radio signal in acoustic
- Author
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V.I. Tambovtcev, I.L. Zheleznyak, and A.A. Kopyrkin
- Subjects
microwaved ,electromagnetic compatibility ,radio pulse ,radio sound effect ,radio ecologic ,amplitude modulation ,physiological effect ,amplitude spectrum ,Physics ,QC1-999 ,Electronics ,TK7800-8360 - Abstract
The article related to the electromagnetic compatibility and radio ecologic. Microwave auditory effect was analyzed, as the observed phenomenon of high-frequency radio signals transformation into acoustic oscillations. This phenomenon was called a radio sound effect. The physical interaction mechanisms of amplitude-modulated high-frequency electrical signal with a perfect non-conductor were considered, leading to the spectating transformation in the low frequency mechanical vibrations or acoustic harmonics of the modulated signal. In the paper presented studies of the possible effects of direct exposure to high-frequency field, for example, in physical therapy, or medical practice.
- Published
- 2018
79. East-West Dichotomy: gaps, interaction, intercrossing
- Author
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Olga Zheleznyak
- Subjects
Восток–Запад ,дихотомия ,трансмутационный контакт ,культурная норма ,парадигма культуры ,культурное пространство ,традиция ,универсум. ,Architecture ,NA1-9428 - Abstract
The article studies the forms of interaction, gaps and intercrossing between the paradigms of East and West. Interpretation of the dichotomy as a model and value of culture and as a significant component of the worldview is presented in the article as a process of combination of cultural norms within the Whole. The idea of ‘transmutation contact’ is proposed for the discussion of peculiarities of the notion East-West. The mobility of borders and the ambiguity of the notion East-West predetermine different discourses of the discussion in the spaces of rational-irrational, tradition-nontradition, enlightenment and barbarism. It can be explained by the fact that the East-West dichotomy is integrated in the universe, the microspace and macrospace.
- Published
- 2017
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80. Magnetic-field-induced Luttinger insulator state in quasi-one-dimensional conductors
- Author
-
Yakovenko, Victor M. and Zheleznyak, Anatoley T.
- Subjects
Condensed Matter - Strongly Correlated Electrons - Abstract
We present a heuristic, semiphenomenological model of the anomalous temperature (T) dependence of resistivity $\rho_{xx}$ recently observed experimentally in the quasi-one-dimensional (Q1D) organic conductors of the (TMTSF)2X family in moderately strong magnetic fields. We suggest that a Q1D conductor behaves like an insulator ($d\rho_{xx}/dT<0$), when its effective dimensionality is one, and like a metal ($d\rho_{xx}/dT>0$), when its effective dimensionality is greater than one. Applying a magnetic field reduces the effective dimensionality of the system and switches the temperature dependence of resistivity between the insulating and metallic laws depending on the magnitude of the magnetic field and its orientation along the ``magic'' and ``nonmagic'' angles., Comment: 2 pages, no figures. This is a short version of cond-mat/9802172 for the Proceedings of the International Conference on Synthetic Metals 1998 (Montpellier, France), to be published in "Synthetic Metals"
- Published
- 1998
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81. Magnetoresistance of YBa2Cu3O7 in the 'cold spots' model
- Author
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Zheleznyak, Anatoley T., Yakovenko, Victor M., and Drew, H. D.
- Subjects
Condensed Matter - Superconductivity - Abstract
We calculate the in-plane magnetoresistance $\Delta\rho_{xx}/\rho_{xx}$ of YBa$_2$Cu$_3$O$_7$ in a magnetic field applied perpendicular to the $CuO_2$ planes for the ``cold spots'' model. In this model, the electron relaxation time $\tau_2\propto1/T^2$ at small regions on the Fermi surface near the Brillouin zone diagonals is much longer than the relaxation time $\tau_1\propto1/T$ at the rest of the Fermi surface ($T$ is temperature). In qualitative agreement with the experiment, we find that Kohler's rule is strongly violated, but the ratio $\Delta\rho_{xx}/\rho_{xx}\tan^2\theta_H$, where $\tan\theta_H$ is the Hall angle, is approximately temperature-independent. We find the ratio is about 5.5, which is of the same order of magnitude as in the experiment., Comment: RevTeX, 4 pages, 6 figures. V.2: 2 references added
- Published
- 1998
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82. Temperature dependence of the normal-state Hall coefficient of a quasi-one-dimensional metal
- Author
-
Yakovenko, Victor M. and Zheleznyak, Anatoley T.
- Subjects
Condensed Matter - Abstract
We develop a systematic theory of the Hall effect in Q1D conductors in both weak and strong magnetic fields for a model where the electron relaxation time varies over the Fermi surface. At high temperatures, the Hall coefficient saturates at the value $-\beta/ecn$, where the dimensionless coefficient $\beta$ is determined by the curvature of the longitudinal dispersion law of electrons, $e$ the electron charge, $c$ is the speed of light, and $n$ is the hole concentration. At low temperatures, where a strong variation of the relaxation rate over the Fermi surface develops in the form of ``hot spots'', the Hall coefficient becomes temperature-dependent and may change sign for a particular choice of the transverse dispersion law parameters. In our model, the sign changes in a weak, but not in a strong magnetic field., Comment: 5 pages, 3 figures, submitted to Synthetic Metals, proceedings of International Conference on Synthetic Metals, 1998, Montpellier, France. v.2: few references are added
- Published
- 1998
- Full Text
- View/download PDF
83. Anomalous temperature dependence of resistivity in quasi-one-dimensional conductors in a strong magnetic field
- Author
-
Zheleznyak, Anatoley T. and Yakovenko, Victor M.
- Subjects
Condensed Matter - Abstract
We present a heuristic, semiphenomenological model of the anomalous temperature (T) dependence of resistivity Rxx recently observed experimentally in the quasi-one-dimensional (Q1D) organic conductors of the (TMTSF)2X family in moderately strong magnetic fields. We suggest that a Q1D conductor behaves like an insulator (dRxx/dT<0), when its effective dimensionality is one, and like a metal (dRxx/dT>0), when its effective dimensionality is greater than one. Applying a magnetic field reduces the effective dimensionality of the system and switches the temperature dependence of resistivity between the insulating and metallic laws depending on the magnitude and orientation of the magnetic field. We critically analyze whether various microscopic models suggested in literature can produce such a behavior and find that none of the models is fully satisfactory. In particular, we perform detailed analytical and numerical calculations within the scenario of magnetic-field-induced spin-density-wave precursor effect suggested by Gor'kov and find that the theoretical results do not agree with the experimental observations., Comment: RevTeX, 17 pages, 7 figures. v.2: minor corrections; references are added and updated v.3: minor corrections as in the published version
- Published
- 1998
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84. Simulating dissolved 90Sr concentrations within a small catchment in the Chernobyl Exclusion Zone using a parametric hydrochemical model
- Author
-
Igarashi, Yasunori, Onda, Yuichi, Smith, Jim, Obrizan, Sergey, Kirieiev, Serhii, Demianovych, Volodymyr, Laptev, Gennady, Bugai, Dmitri, Lisovyi, Hlib, Konoplev, Alexei, Zheleznyak, Mark, Wakiyama, Yoshifumi, and Nanba, Kenji
- Published
- 2020
- Full Text
- View/download PDF
85. Phenomenological interpretations of the ac Hall effect in the normal state of YBa2Cu3O7
- Author
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Zheleznyak, Anatoley T., Yakovenko, Victor M., Drew, H. D., and Mazin, I. I.
- Subjects
Condensed Matter - Superconductivity ,Condensed Matter - Strongly Correlated Electrons - Abstract
Ac and dc magnetotransport data in the normal state of YBa2Cu3O7 are analyzed within Fermi-liquid and non-Fermi-liquid models. In the Fermi-liquid analysis we use the Fermi surface deduced from band structure calculations and angular resolved photoemission experiments and assume that the electron relaxation rate varies over the Fermi surface. The non-Fermi-liquid models are the two-dimensional Luttinger liquid model and the charge-conjugation-symmetry model. We find that the existing experimental data can be adequately fitted by any of these models. This work provides a framework for the analysis of experiments that may discriminate among these models., Comment: 12 pages, 6 figures, RevTeX, to be published in Phys Rev B, 1 Feb 1998. V.2: A figure of R_H(T) and a number of references are added. V.3: Discussion of temperature dependences is extended and the parameters are given explicitly. Various typos caught by PRB editors are corrected
- Published
- 1997
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86. Permafrost is warming at a global scale
- Author
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Biskaborn, Boris K., Smith, Sharon L., Noetzli, Jeannette, Matthes, Heidrun, Vieira, Gonçalo, Streletskiy, Dmitry A., Schoeneich, Philippe, Romanovsky, Vladimir E., Lewkowicz, Antoni G., Abramov, Andrey, Allard, Michel, Boike, Julia, Cable, William L., Christiansen, Hanne H., Delaloye, Reynald, Diekmann, Bernhard, Drozdov, Dmitry, Etzelmüller, Bernd, Grosse, Guido, Guglielmin, Mauro, Ingeman-Nielsen, Thomas, Isaksen, Ketil, Ishikawa, Mamoru, Johansson, Margareta, Johannsson, Halldor, Joo, Anseok, Kaverin, Dmitry, Kholodov, Alexander, Konstantinov, Pavel, Kröger, Tim, Lambiel, Christophe, Lanckman, Jean-Pierre, Luo, Dongliang, Malkova, Galina, Meiklejohn, Ian, Moskalenko, Natalia, Oliva, Marc, Phillips, Marcia, Ramos, Miguel, Sannel, A. Britta K., Sergeev, Dmitrii, Seybold, Cathy, Skryabin, Pavel, Vasiliev, Alexander, Wu, Qingbai, Yoshikawa, Kenji, Zheleznyak, Mikhail, and Lantuit, Hugues
- Published
- 2019
- Full Text
- View/download PDF
87. Parquet solution for a flat Fermi surface
- Author
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Zheleznyak, Anatoley T., Yakovenko, Victor M., and Dzyaloshinskii, Igor E.
- Subjects
Condensed Matter - Abstract
We study instabilities occurring in the electron system whose Fermi surface has flat regions on its opposite sides. Such a Fermi surface resembles Fermi surfaces of some high-$T_c$ superconductors. In the framework of the parquet approximation, we classify possible instabilities and derive renormalization-group equations that determine the evolution of corresponding susceptibilities with decreasing temperature. Numerical solutions of the parquet equations are found to be in qualitative agreement with a ladder approximation. For the repulsive Hubbard interaction, the antiferromagnetic (spin-density-wave) instability dominates, but when the Fermi surface is not perfectly flat, the $d$-wave superconducting instability takes over., Comment: REVTeX, 36 pages, 20 ps figures inserted via psfig. Submitted to Phys. Rev. B
- Published
- 1996
- Full Text
- View/download PDF
88. 'Hot Spots' in Quasi-One-Dimensional Organic Conductors
- Author
-
Zheleznyak, Anatoley T. and Yakovenko, Victor M.
- Subjects
Condensed Matter - Abstract
Distribution of the electron scattering rate on the Fermi surface of a quasi-one-dimensional conductor is calculated for the electron-electron umklapp interaction. We find that in certain regions on the Fermi surface the scattering rate is anomalously high. The reason for the existence of these ``hot spots'' is analogous to the appearance of the van Hove singularities in the density of states. We employ a generalized $\tau$-approximation (where the scattering integral in the Boltzmann equation is replaced by the scattering time which depends on the position at the Fermi surface) to study the dependence of the electric resistance on the amplitude and the orientation of a magnetic field. We find that the ``hot spots'' do not produce a considerable magnetoresistance or commensurability effects at the so-called ``magic angles''., Comment: Self-unpacking single PostScript file (4 pages) which includes 7 figures. Request hardcopy if you encounter problems. (No changes to the body of the paper in the revised version: just cond-mat number inserted at top.)
- Published
- 1995
89. Experimental and Theoretical Justification of Designing a Cable Line Exposed to Cryogenic Cracking
- Author
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Zheleznyak, I. I. and Ivin, I. A.
- Published
- 2018
- Full Text
- View/download PDF
90. Influence of physical activity on students’ life quality
- Author
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A.V. Leifa and Y.D. Zheleznyak
- Subjects
activity ,physical ,health ,life quality ,Special aspects of education ,LC8-6691 - Abstract
Purpose: influence of students’ targeted and regular physical activity on their life quality. Material: in the research students (n=325, age 18-21 years) participated. Students’ life quality was studied with the help of questionnaire "MOS SF-36» (J.E.Ware). We determined students’ physical workability and physical fitness. Results: formation of students’ physical activity was based on the worked out technology: 1) motor functioning for general endurance; 2) accent on speed-power training was made in second half of semester; 3) training of dexterity and flexibility was realized considering certain kind of academic material and future professional activity; 4) the structure of trainings in academic year included 3 stages. At first stage (September, October) 70% of time was spent for endurance, 15% - for quickness and 15% for strength. At second stage (November, March) 50% was assigned for endurance, 30% - for quickness and 20% - for strength. At third stage (April, May) 40% of time was assigned for quickness, 40% - for strength and 30% - for endurance. As a result of realization of the worked out technology for students’ physical activity their individual health improved and became the factor of students’ life quality perfection. Conclusions: targeted and regular physical activity of students confidently influences on their individual health by all indicators: organism’s functional reserves; physical workability and fitness, way of life and organism’s resistance. Targeted and regular physical activity of students facilitates improvement of students’ life quality.
- Published
- 2017
- Full Text
- View/download PDF
91. Stability karst cave Heetei to dynamic impacts during blasting development Ust'-Borzinsky limestone deposits in East Transbaikalia
- Author
-
Il'ya I. Zheleznyak and Vladimir V. Manilyuk
- Subjects
горные породы ,лед ,взрыв ,колебания ,устойчивость ,rocks ,ice ,blast ,vibration ,resistance ,Engineering geology. Rock mechanics. Soil mechanics. Underground construction ,TA703-712 - Abstract
The article devotes to investigations the caves Heetey - natural monument Trans-Baikal Territory, in connection with the problem of their preservation during the blasting development of the nearby located Ust'-Borzinsky limestone deposits. Limestone processing is planned to open by a career with 5 ledges height of 15 m each. The characteristics of natural conditions, geological, and hydrogeological properties of permafrost enclosing rock massif, provides information about the shape, location and characteristics of ice cover, which affects on the dynamic stability of the cave and its elements. The analysis of the results of experimental studies of dynamic stability of karst cave Heetey to the effects of explosions in the development of the open method of Ust'-Borzinsky limestone deposits is presented. The main purpose of engineering and seismic measurements of vibrations of the rock mass enclosing Heetey cave was to study the amplitude and frequency content of vibrations to assess the seismic effect of explosions carried out in the near quarry with limestone mining. Actual measurements of the parameters of the rocks fluctuations in the cave Heetey included varying the total weight of the impact of charges, the distance from the source of vibrations to the registration points, the difference in the parameters of group explosions on the amplitude-frequency characteristics of wave propagation in a cave in the enclosing rock mass. The analysis of the results of field measurements of cave rock vibrations and calculations, of their dynamic stability taking into account the effect of the array of bottom cover of ice, filling with water of the cave and shielding devices is cited. Particular attention is paid to the effect of empty and filled with ice holes in the rock mass in the propagation of mechanical vibrations in it. Presented findings of scientific and applied pattern.
- Published
- 2017
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- View/download PDF
92. Provincial Design: on the Project Presentation
- Author
-
Olga Zheleznyak
- Subjects
провинциальный дизайн ,имидж территории ,идентичность ,брендирование ,кафедра дизайна ИРНИТУ ,Architecture ,NA1-9428 - Abstract
The use of provincial design as a special form of manifestation of peculiarity of the “place” is determined by its relevancy for today’s world culture and common development tendencies of the Siberian region. The Provincial Design Project worked out by the Department of Design of Irkutsk National Research Technical University reflects the peculiarities of the art and design space of the region, corresponds to the current context and challenges of the profession and may serve as specific means of the territorial image formation.
- Published
- 2017
- Full Text
- View/download PDF
93. Nonlinear mathematical model of the economic soil fertility for landscape areas of the Transcarpathia
- Author
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L. V. Gebrin-Baydi, O. O. Zheleznyak, and A. O. Tereshchenko
- Subjects
nonlinear dependence ,mathematical model ,crops ,yields ,economic fertility ,landscaped areas ,soils ,Astronomy ,QB1-991 - Abstract
The article discusses some of the characteristics of Transcarpathian region soils current conditions. For evaluation of the efficiency of agricultural land we propose a nonlinear mathematical model of soil fertility depending on the economic costs on growing crops. Efficiency of agricultural land use in Transcarpathian region of Ukraine in three landscape zones by traditional for them agricultural crops is assessed.
- Published
- 2016
- Full Text
- View/download PDF
94. Automated System of Competencies Indicators’ Formation Control during the Basic Boolean Algebra Studying
- Author
-
Sidorova, E. A., primary, Dolgova, A. V., additional, and Zheleznyak, S. P., additional
- Published
- 2023
- Full Text
- View/download PDF
95. Photo Gallery
- Author
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Alexander Mikhailov, Leonid Glebko, and Olga Zheleznyak
- Subjects
Architecture ,NA1-9428 - Published
- 2016
- Full Text
- View/download PDF
96. Usage of space spectrophotometry for remote determination of physical and chemical properties of soil for landscape areas of the Transcarpathia
- Author
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L. V. Gebrin-Baydi, V. Yu. Belenok, O. O. Zheleznyak, and M. I. Nikolaenko
- Subjects
remote sensing ,space spectrophotometry ,agrochemical characteristics of soils ,humus determination ,landscaped areas of Transcarpathia ,Astronomy ,QB1-991 - Abstract
The methods of space spectrophotometry were used to identify soil types, to determine soil granulometric composition and to evaluate quantitative indicator of humus content in the soil based on mathematical calculations using spectral channels data of space images and terrestrial research data for different landscape zones of Transcarpathian region. After statistical processing of data we classified the types of soil, identified quadratic dependence between the spectral brightness of images and the content of physical clay in the soil and obtained quantitative indicators of humus content in the soil using the red channel data.
- Published
- 2016
- Full Text
- View/download PDF
97. Laboratory and numerical study of waves in the port area
- Author
-
I.G. Kantardgi and M.J. Zheleznyak
- Subjects
port area waves ,experiments and numerical modelling ,method of comparison ,standing wave ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Building construction ,TH1-9745 - Abstract
Parameters of waves in water area of the projected port are normally obtained using physical and numerical modelling. Physical modelling allows defininig structural details of the port’s facilities and provides with information for the appropriate selection of a numerical model. The problems created by this approach are shown in the case study of the projected port in Vostok (East) Bay, the Sea of Japan. The experimental study of waves propagation in the port water area was carried out in the wave basin. The port area was reproduced at a scale of 1:50, and the modelling was conducted under the Froude number similarity. Experimental results are provided for the study of wave propagation in the port model from the effects of the waves of 5 % exceedance probability. To confirm the results of the laboratory experiments, four relevant mathematical models were used, one of them is the ARTEMIS model which is based on gentle slopes equations. The heights of numerically modeled waves in the control points were compared with the waves measured with sensors-wave gauges. The calculated values at the control point and minimum and maximum values in a circular neighborhood with the radius of 30 m (1/4 of the average wavelength of 120 m) were compared with the results of the experiments. The proposed approach allows comparing the results of physical modelling with the results of numerical modelling and selecting the appropriate numerical model based on the results of the comparison.
- Published
- 2016
- Full Text
- View/download PDF
98. Selective targeting of IL-2 to NKG2D bearing cells for improved immunotherapy
- Author
-
Reza Ghasemi, Eric Lazear, Xiaoli Wang, Saeed Arefanian, Alexander Zheleznyak, Beatriz M. Carreno, Ryuji Higashikubo, Andrew E. Gelman, Daniel Kreisel, Daved H. Fremont, and Alexander Sasha Krupnick
- Subjects
Science - Abstract
High-affinity IL-2Rα expressed by Tregs mitigates the potential of IL-2 use in cancer therapy. Here, the authors fuse IL-2 with an NKDG2 binding domain, and show that it induces IL-2 signalling selectively in NKG2D+cells, delaying tumour growth in mice without the side effects of conventional IL-2 therapy.
- Published
- 2016
- Full Text
- View/download PDF
99. EFFECTIVENESS OF TIOTRIAZOLINE IN COMPLEX THERAPY OF ISCHEMIC HEART DISEASE
- Author
-
E. A. Kartashova, A. A. Kastanyan, M. I. Nazheva, A. Yu. Zhulitov, and E. I. Zheleznyak
- Subjects
tiotriazoline ,ischemic heart disease ,exercise tolerance ,cytochemistry ,proteomics ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Aim. To study molecular effects of tiotriazoline in 30 patients with stable angina I-III functional class.Material and methods. Comparison of molecular effects of cardioprotection is done based on dynamics of exercise tolerance dynamics, and via proteomic methods of investigation, questionnaires assessment of life quality in patients with ischemic heart disease (IHD).Results. It was found, that tiotriazoline improves exercise tolerance, shows strong cardioprotective effect that includes antioxidant and cytoprotection effects in IHD patients.Conclusion. Tiotriazoline helps to reduce the mean number of angina attacks in IHD patients, as to improve mean functional class.
- Published
- 2016
- Full Text
- View/download PDF
100. MR-IMAGING IN DIAGNOSTICS OF FOCAL LIVER LESIONS
- Author
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S. S. Bagnenko, G. E. Trufanov, and I. S. Zheleznyak
- Subjects
liver ,mr-imaging ,cancer ,hematomas ,cysts ,metastases ,hepatotropic contrast medium ,Surgery ,RD1-811 - Abstract
The authors determined the efficacy of main methods of MR-imaging and their part in differentiated diagnostics of focal liver lesions. There were examined 256 patients and 414 liver lesions were analyzed. It was shown that the efficacy of conventional research without application of contrast medium was very limited (efficacy of mathematical model 58%). The data obtained during dynamic contrast enchancement (efficacy of the model 67%) were the basis for differentiated diagnostics for majority of nosological forms. The investigation using hepatotropic contrast medium had the greatest possibilities (efficacy of the model 80%). MR-diffusion is the effective procedure for visualization of focal liver lesions, but its possibilities in differentiated diagnostics is limited.
- Published
- 2016
- Full Text
- View/download PDF
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