Search Results - "Valov, V. A."

Single-Station Location of Radio Emission Sources in the Decameter Wavelength Range Using a Wide-Aperture Direction Finder and a Chirp Ionosonde–Radio Direction Finder by Vertogradov, G. G., Uryadov, V. P., Chaika, E. G., Valov, V. A., Vybornov, F. I., Pershin, A. V., Starodubrovsky, A. S.

“…We present the results of single-station location of radio emission sources on the mid-latitude Vasil’sursk—Rostov-on-Don path using a wide-aperture direction…”
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On the layer crossing problem for a semi-infinite hydraulic fracture by Valov, A.V., Dontsov, E.V.

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An implicit level set algorithm for hydraulic fracturing with a stress-layer asymptote by Valov, A.V., Dontsov, E.V., Baykin, A.N., Golovin, S.V.

“…The capability to simulate a hydraulic fracturing process is an essential tool that can be used to optimize treatment design and increase the efficiency of…”
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Prediction of the maximum observed frequency of the ionospheric HF radio channel using the method of artificial neural networks by Barkhatov, N. A., Revunov, S. E., Vertogradov, G. G., Vertogradov, V. G., Valov, V. A., Uryadov, V. P.

“…The algorithm for predicting one of the main parameters of the ionospheric HF radio channel--maximum observed frequency (MOF)--for the interval 0.5-3 h has…”
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Oblique Sounding of the Ionosphere by Means of an Ionosonde–Direction Finder with Chirp Signal by Vertogradov, G. G., Uryadov, V.P., Sklyarevsky, M. S., Valov, V. A.

“…We give a mathematical rationale, an algorithm, and hardware implementation for a multichannel ionosonde–direction finder with chirp signal. The results of…”
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On the layer crossing problem for a semi-infinite hydraulic fracture by Valov, A. V, Dontsov, E. V

“…This paper analyses the problem of a semi-infinite fluid-driven fracture propagating through multiple stress layers in a permeable elastic medium. Such a…”
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Thermoporoelastic model for the cement sheath failure in a cased and cemented wellbore by Valov, A.V., Golovin, S.V., Shcherbakov, V.V., Kuznetsov, D.S.

“…In the paper, we analyze factors that can lead to a failure of the cement sheath of a cased wellbore. By using a fully coupled linear thermo-poro-elastic…”
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Circuits of a pulse-vector controlling alternate current motor drive by Valov, A. V., Funk, T. A., Zhuravlev, A. M., Sidorenko, N. Yu

“…A system of classification for methods for pulse-vector controlling ac drives is presented. The resource and energy efficiency are considered in electric…”
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Pulse-vector control with indirect determination of rotor angular position by Usynin, Yu. S., Smirnov, Yu. S., Kozina, T. A., Valov, A. V.

“…A system of pulse-vector control with an indirect determination of the angular position of the rotor based on a groundbreaking two-step method for computing…”
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An implicit level set algorithm for hydraulic fracturing with a stress-layer asymptote by Valov, A. V, Dontsov, E. V, Baykin, A. N, Golovin, S. V

“…The capability to simulate a hydraulic fracturing process is an essential tool that can be used to optimize treatment design and increase the efficiency of…”
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Asynchronous electric drive with pulse-vector control by Usynin, Yu. S., Valov, A. V., Kozina, T. A.

“…The operating principle, estimated characteristics, experimental research, comparison with other types of control, mathematical design principles, functional…”
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Cluster structure of artificial ionospheric turbulence according to the data of the radar measurements by the radio-direction finder ionosonde by Vertogradov, G. G., Vertogradova, E. G., Uryadov, V. P., Vertogradov, V. G., Komrakov, G. P., Krasheninnikov, I. V., Cherkashin, Yu. N., Valov, V. A., Bredikhin, D. V., Makarov, A. V.

“…We present the results of experimental studies of an artificial ionospheric turbulence, which were obtained using the radio-direction finder ionosonde with…”
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Sounding of an artificially perturbed ionosphere by means of an ionosonde/position finder with chirp modulation of the signal by Uryadov, V. P., Vertogradov, G. G., Vertogradov, V. G., Kubatko, S. V., Ponyatov, A. A., Cherkashin, Yu. N., Krasheninnikov, I. V., Valov, V. A., Komrakov, G. P., Makarov, A. V., Bredikhin, D. V.

“…We describe the operation of an ionosonde/position finder with chirp modulation of the signal. The first results of measuring the characteristics of short-wave…”
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Structure and dynamics of the ionospheric region with artificial small-scale irregularities according to complex measurements of the scattered radio-signal characteristics by Uryadov, V. P., Vertogradov, G. G., Ponyatov, A. A., Vertogradov, V. G., Kubatko, S. V., Cherkashin, Yu. N., Krasheninnikov, I. V., Komrakov, G. P., Valov, V. A.

“…We present the results of complex measurements of characteristics of HF radio signals scattered by artificial small-scale irregularities by means of oblique…”
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Carrier redistribution and nonlinear SHF properties of inhomogeneous semiconductor films by Belyantsev, A. M., Valov, V. A., Drozdov, M. N., Zheleznyak, A. L., Kozlov, V. A., Yakovlev, M. L.

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Redistribution of current carriers and nonreciprocal effects in thin semiconductor films by Belyantsev, A. M., Valov, V. A., Kozlov, V. A.

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Modulator of radiation in the millimeter range based on interband breakdown in p-InSb by Valov, V. A., Mazov, L. S., Piskarev, V. I.

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