Materials Literature
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Scientific and practical foundations of formation and functioning of regional systems of educational quality control as constituent parts of the national system are reviewed. The experience of the Rostov Region in independent evaluation and informational support of the data pertaining to quality of regional education…
We develop auralization algorithms for computer simulation of sounding of audio files in a certain hall. By using the Ray Tracing Method there is formed the impulse room response. The audible sound is constructed as a convolution of the initial signal with this impulse response. The computational realization is based…
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Article is devoted to research of process of centrifugal processing. Theoretical models are developed for definition of an average arithmetic deviation of a structure of the established roughness, depth of the strengthened layer and a degree of hardening. The technique of designing of technological processes of centri…
Process of formation of acoustic performances in cabins of jib cranes in-process surveyed. Dependences of formation of noise in cabins from external sources of an aerodynamic noise are detected and on the basis of it possible ways of drop of levels of a sound pressure on workplaces of crane operators.
The article is devoted to the philosophical aspects of the problem strategy of management organization, which bank human potential is conceptions; inculcate new technology and experience advanced; to the complex plane strategy of the suppose effectual work organization that are gain prime result of an competition.
In operation influence of vibration of elements of a protection of a cabin of the bridge crane on formation of structural noise is considered. Having applied a method of an energy balance expressions of a vibration speed are obtained depending on an entered vibration power of external sources. Possible ways of drop of…
Modern representations about interrelation of problems and the approaches arising in powder metallurgy, with problems of a nonclassical and postnonclassical science are stated. It is shown, that in the powder metallurgy initially falling under a paradigm of a classical science, it is a lot of displays of a science non…
Sites of vibro-shock hardening of products are characterised by the raised levels of vibration and radiated noise. Experimental researches have shown characteristic for the given type of the equipment of feature виброакустических characteristics and their results can be used for a choice technical decisions of system…
Structure of the composites and friction and wear features are described for polymeric polytetrafluorethylene coating.
Process of formation of vibrations in-process surveyed at milling lengthy details (spars). Analytical dependences which allow to calculate a spectrum of vibrations of the spar are obtained and on this basis to define expected levels of emitted noise.
The theory keyboard straw-shaker is considered{examined} in view of elastic - viscous behaviour of straw in interaction with a surface of a key. The theory straw-shaker is stated in the form of the description of algorithm of technological process of work keyboard straw-shaker without a substantiation and a conclusion…
Method is described to calculate thermogramms for sausage cooking process. With automated process's parameters correction. Examples of thermoramms describing process first and finish stages for sausages in natural and artificial casings are given.
Original non-Gaussian distribution of item size values, derived by the qualified tool machining, might be used as a model of such a machining process. By means of this model were obtained the expressions for determination of reclaimable rejects and waste during machining. With the help of these expressions were receiv…
Abstract The natural photosynthetic reaction center utilizes sequential multi-step electron transfer from the excited chromophore to the terminal electron acceptor via electron mediators to attain a long lifetime of the final charge-separated (CS) state. Contrary to natural systems, simple electron donor–acceptor dyad…
A one-directional invisibility cloak is presented in this letter. Perfect invisibility can be achieved for TM waves along certain directions. The parameters are just homogeneously anisotropic and relatively easy for practical realizations. Nonmagnetic cloak is also studied to further reducing the complexity of the clo…
Recent developments in the field of silicon nanostructures, particularly those properties and phenomena that are related to the photoluminescence (PL) from silicon nanostructures, have attracted much attention lately. A major source of controversy and disagreement among researchers is the underlying mechanism behind t…
The blue emission of polyfluorene (PF) based light-emitting diodes (LEDs) is known to degrade due to a low energy green emission, which hitherto has been attributed to oxidative defects. By studying the electroluminescence from ethyl-hexyl substituted PF LEDs in the presence of oxygen and in an inert atmosphere, and b…
Perovskite solid solution in the (1− x )[0.4BiScO 3 –0.6BaTiO 3 ]+ x (K 1/2 Bi 1/2 )TiO 3 [BSBT–KBT x ] system was synthesized using conventional sintering and hot‐isostatic pressing. Dielectric properties of BSBT ceramics with different dopant levels of KBT were characterized as a function of temperature and frequenc…
Taking into account the coupling between the position of the wall and an internal degree of freedom, namely its phase $ϕ$, we examine, in the rigid wall approximation, the dynamics of a magnetic domain wall subject to a weak pinning potential. We determine the corresponding force-velocity characteristics, which displa…