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Development of microstructure of the fly ash aerated concrete in time
(Elsevier, 2015-07-09)Calciumhydrosilicate components formed during autoclaving process are highly complex formations, which often blend together mutually and form a variety of intermediate products, from completely amorphous, to the good ... -
Determine the Compressive Strength of Calcium Silicate Bricks by Combined Non-Destructive Method
(Hindawi, 2014-09-01)The paper deals with the application of combined non-destructive method for assessment of compressive strength of calcium silicate bricks. In this case it is a combination of the rebound hammer method and ultrasonic pulse ... -
Automorphisms of Ordinary Differential Equations
(Hindawi Publishing Corporation, 2014-01-29)The paper deals with the local theory of internal symmetries of underdetermined systems of ordinary differential equations in full generality. The symmetries need not preserve the choice of the independent variable, the ... -
Explicit general solution of planar linear discrete systems with constant coefficients and weak delays
(Springer Nature, 2013-03-06)In this paper, planar linear discrete systems with constant coefficients and two delays $$ x(k+1)=Ax(k)+Bx(k-m)+Cx(k-n) $$ are considered where $k\in\bZ_0^{\infty}:=\{0,1,\dots,\infty\}$, $x\colon \bZ_0^{\infty}\to\mathbb{R}^2$, ... -
Discrete matrix delayed exponential for two delays and its property
(Springer Nature, 2013-06-13)In recent papers, a discrete matrix delayed exponential for a single delay was defined and its main property connected with the solution of linear discrete systems with a single delay was proved. In the present paper, a ...
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