The September 11, 2001 events attracted the attention of civil engineers of the world to the problem of safety of towers and skyscrapers. According to recent studies, the WTC collapse was caused by man-made explosions on a critical floor located much lower than the floors hit by terrorist planes which supports the wide-spread rumor in the U.S. that MASAD agents used the aftermath ...

The equation of characteristics for system of the equations of movement cubic anisotropic environment which thermal properties are described by the hyperbolic law of heat conductivity is obtained.

Results of the investigation integral wavelet transforms are given. Acting and boundedness conditions for the integral wavelet transforms with compact support are obtained. Theorems of an inversion of the integral wavelet transform in the space of square-summable functions and the pointwise convergence of the inverse wavelet transform under Dini condition are stated.

h was developed computer model of single graphite atomic layer (graphene) crystal lattice on basis of valence-force-field approach. One performed computational experiments to determine mechanical cluiracteristics (linear elasticity modulus, crosscut compression coefficient, shear modulus) according to graphene particles dimensions. One realized comparison present results with ...

The statistical theory of the Cauchy-Green type measure of nonlinear elastic deformation for nematic elastomer is developed. The spontaneous distortions of the nematic elastomers are considered as example of application the statistical theory.

In the paper, a solution of unsteady heat transfer problem with periodic boundary condition by means of boundary integral equations method was presented. Also was presented the results of numerical simulation of heat transfer in two dimensional area with oscillating temperature on the boundary.

The new integral equations for brightness coefficients of pkineparellel dispersive medium of optical thickness Tq are obtained using invariance relations, involving usual Green’s functions or their generalization (for example, reduced Green’s functions) of radiation transfer equations. It is shown that the structure of these integral equations enables to obtain multiterm asimptotics ...

With use of а metiwd affinal differences distribution is investigated water temperatures in a wall of the hollow cylinder. The algorithm is developed and the program on the IBM for definition of temperatures in any point of the cylinder is made at the set temperature on internal and external surfaces. Analytically also the specific thermal stream on an external surface is ...

In this paper the simpe optimization problem of laminate discontinued rocks is considered. The paper presents some possible formulations of optimal structural design problem based on probabilistic approaches due to possible incompleteness of information concerning crack size, location and orientation. Using these approaches optimal designs for laminate rocks approximated to the ...

The correlation analysis of weight values of direction vectors and their order numbers of normalized vector model for objects under investigation is proposed. The experimental results of construction of the regression line are represented, as well as ones for calculation of theoretical-correlation ratio, similarity measure and classification of objects under investigation for a ...