Determination of the Yarkovsky Effect Parameter for Asteroids with Small Perihelion Distances

Russian Physics Journal - Results of determining the Yarkovsky effect parameter for all asteroids with small perihelion distances known by January, 2021 are presented. A comparison is performed...     

On a Method for Solving Boundary Value Problems of Aerohydrodynamics

Journal of Applied and Industrial Mathematics - Under consideration is the well-known boundary value problem of aerohydrodynamics in which it is required to find the velocity distribution of fluid...     

Neutron Production from Structured Targets Irradiated By an Ultrashort Laser Pulse

Journal of Russian Laser Research - We study the laser-driven generation of thermonuclear neutrons from targets with a microstructured surface in the form of deuterated microwires, using...     

An Acousto-Optic Polarization-Insensitive Two-Coordinate Deflector

Acoustical Physics - A new scheme of a polarization-independent two-coordinate acousto-optic deflector based on paratellurite crystals has been developed. One specific feature of the optical scheme...     

Dynamics of the Spatial Structure of a Microsecond Pulsed Barrier Discharge Initiated in Atmospheric Pressure Air in the Point–Plane Geometry at Different Polarities of Feed Voltage

Technical Physics - The evolution of a microsecond pulsed barrier discharge initiated in atmospheric pressure air in the point–plane electrode geometry has been investigated using streak...     

Large Numbers Generated by the Riemann Zeta Function

Journal of Experimental and Theoretical Physics - Anomalously large numbers generated of the Riemann zeta function are analyzed. A set of Mersenne primes is investigated. The equations connecting...     

Specific Features of the Interaction of Microwave Radiation with Magnetic Colloids

Radiophysics and Quantum Electronics - We study, both experimentally and theoretically, propagation of electromagnetic waves in the microwave range (10.5 GHz) through homogeneous magnetic colloids...     

Effective suppression of beta oscillation in Parkinsonian state via a noisy direct delayed feedback control scheme

This work explores the function of the noisy direct delayed feedback(NDDF)control strategy in suppressing the pathological oscillations in the basal ganglia(BG)with Parkinson’s disease(PD).Deep brain stimulation(DBS)alleviates the PD state fantastically.However,due to its unclear mechanism and open-loop characteristic,it is challenging to further improve its effects with lower energy expenditure.The noise stimulus performs competitively in alleviating the PD state theoretically,but it cannot adapt to the neural condition timely and automatically due to its open-loop control scheme.The direct delayed feedback(DDF)control strategy is able to disturb excessive synchronous effectively.Therefore,the NDDF control strategy is proposed and researched based on a BG computational model,which can reflect the intrinsic properties of the BG neurons and their connections with thalamic neurons.Simulation results show that the NDDF control strategy with optimal parameters is effective in removing the pathological beta oscillations.By comparison,we find the NDDF control strategy performs more excellent than DDF in alleviating PD state.Additionally,we define the multiple-NDDF control strategy and find that the multiple-NDDF with appropriate parameters performs better than NDDF.The obtained results contribute to the cure for PD symptoms by optimizing the noise-induced improvement of the BG dysfunction.     

A New Radar-Signal Parameter for Recognition of Wind-Related Weather Hazards

Radiophysics and Quantum Electronics - Wind-related weather hazards remain difficult to recognize targets for weather radars. Methods that use estimates of the width of the reflected-signal...     

Modification of the SVD Unfolding Regularization Method

JETP Letters - Unfolding is currently an important stage of processing experimental data, reducing the effect of errors and reconstructing approximately real distributions of quantities. Numerous...