Probabilistic Characteristics of the Amount of Harmful Substances in Anthropogenic Formations

In the present paper, the main probabilistic characteristics (the mathematical expectation, variance, and correlation function) of the amount of harmful substances in anthropogenic formations are calculated under the stationary conditions when the stream of these substances is a recurrent stream of events.     

Mean Busy Period of Infinite Multilinear Queues with a Doubly Stochastic Input Flow

The mean busy period of an infinite multilinear queue with a doubly stochastic flow of incoming queries having two intensities and exponential server is calculated.     

Influence of the properties of an oxide film on the oxidation of aluminium powders

The structure of oxide films of aluminium powders has been established to depend on the size of its particles. The temperature dependence of the oxidation of the powder in air is ascribed to changes in both the structure of the oxide laver and the pressure of saturated aluminium vapor. The porous, permeable product consists of hollow microspheres of -Al₂O₃.

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. , . , –Al₂O₃.

     

Synthesis and luminescent properties of functionalized polynorbornenes with boron-containing fragments in side chains

Russian Chemical Bulletin - New norbornene monomer, viz., 5-[(bicyclo[2.2.1]hept-5-en-2-ylmethoxy)methyl]-8-[(dimesitylboryl)oxy]quinoline (1), was synthesized. The copolymers based on monomer 1...     

Optimal linear filtration of the intensity of a poisson stream of events in the presence of dead time

An integral equation is derived defining the impulse transition character of an optimal linear filter for an estimate of the intensity of a fluctuating Poisson stream, taking into account the dead time of the sensors.Anzhero-Sudzhensk Branch, Tomsk Pedagogical Institute. Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 12, pp. 61–66, December, 1993.     

Tunnel Current between Structural Elements of Thin Graphene/Nanotube Films

Physics of the Solid State - On the basis of the constructed atomistic models of graphene/nanotube films with different numbers of nanotubes in supercells, in silico studies of the regularities of...     

Model of dead time when there are several recording instruments present

A model of the formation of dead time when there are several recording instruments present is proposed. Estimators of the rate of the incoming flow of events are constructed. Anzhero-Sudzhensk Division, Tomsk Pedagogical University. Tomsk University. Translated from Izvestiya Vyssikh Uchebnykh Zavedenii, Fizika, No. 4, pp. 50–56, April, 1997.     

Estimation of the Poisson Stream Intensity in a Multilinear Queue with an Exponential Job Queue Decay

Times the busy queue periods start are found for a multilinear queue with an exponential job queue decay and uniform resource allocation to individual servers. The stream intensity and the average job are estimated from observations of the times the queue busy periods start.     

Rotation of the inner shell in a C<Subscript>20</Subscript>@C<Subscript>80</Subscript> nanoparticle

The stability of a C₂₀@C₈₀ nanoparticle and the rotation of its inner shell are studied theoretically within the tight-binding approximation. It is found that the C₂₀ skeleton in the free state is described by space group D_3d; in the case where C₂₀ is placed into the C₈₀(I _h ) fullerene field, the space group of C₂₀ is raised to I _h due to isomerization. The total energy surface of the C₂₀@C₈₀ compound is scanned over two rotation angles. Based on an analysis of the surface relief and energy isoline map, orientational melting of the nanoparticle is predicted. A nanoparticle gyroscope—C₂₀ rotating in the field of C₈₀ at a certain relative orientation and energy supply—is also predicted to exist.     

Effect of technological factors on the structure and properties of Eskaplen film material

The effect of the composition of the solvents, the concentration of the solutions, and the rate of film formation on the structure and properties of Eskaplen film material obtained on the basis of SKI-3 isoprene rubber hydrochloride has been investigated. The properties of the film material are shown to depend on the structure that develops during the film-forming process.Moscow Technologic Institute of the Meat and Dairy Industry. Translated from Mekhanika Polimerov, No. 1, pp. 8–13, January–February, 1973.