Generation of new multilayer coatings of units and blocks in electronics for effective damping of thermo-mechanical impact loads requires the development of mathematical models suitable for engineering practice. Mathematical model and calculation method proposed in this paper allows investigate the passing and reflection of thermo-elastic waves in a multilayer body excited by non-stationary magnetic field at the conductive layer boundary. Also, the problem of estimating relative influence of volume forces induced by the magnetic field in the electrically conductive nonferromagnetic layer on the wave propagation in thermo-elastic polymer compounds was considered. It is assumed that the velocity of heat propagation is finite. Assumptions are introduced to simplify the fully coupled system of magneto-thermo-elastic equations that allow applying the numerical solution based on the method of characteristics for obtaining concrete results. A method for finding required quantities at the nodal points of the boundary between the layers is indicated. The suggested mathematical model and calculation method makes it possible, without making any significant changes in the computing system, to carry out numerical experiments on researching the damping properties of multilayer coatings with different geometrical and mechanical parameters under the conditions of the thermo-mechanical loadings. This calculation method of heterogeneous multilayer thermo-elastic structures can be used to identify the areas most disposed to the damage.

The main models of crosstalk faults are defined: 1) induced positive and negative pulses, 2) induced delays. The purpose of the work is to increase the effectiveness of the methods of constructing checking tests for digital systems based on an evolutionary approach and models of non-const fault. Formalized statement of the problem of test generation for a single crosstalk faults-induced pulses and delays. It is shown that this problem is reduced to solving a system of logic equations in the multi-valued alphabet. The 8-valued alphabet and multivalued functions for basic gates are defined. Simulation method was developed in the 8-valued alphabet for crosstalk faults. On this basis, the genetic algorithm is proposed for test generation of single cross-faults. The test generation problem for fault-induced delay is formalized A genetic algorithm of test generation for fault-induced is proposed. Developed algorithms and software for test generation for crosstalk faults, which improve the quality of test generation by using evolutionary techniques. The approbation of the developed methods is implemented at circuits of international catalogs ISCAS85, ISCAS89, which showed an increase in the completeness of tests by 15%.

Установлено, что недостатком известных метрик качества на уровне статей является то, что они характеризуют свойства отдельных статей без учета их связи с другими публикациям, недостатком метрик на уровне авторов – то, что они не учитывают взаимосвязь публикаций разных авторов, а метрик на уровне журналов – то, что они неприменимы для отдельных статей и для отдельных ученых. Впервые предложен комплекс межстатейных метрик научных публикаций, позволяющих количественно оценивать свойства научных публикаций, содержащий метрики, учитывающие взаимосвязь статей и их лексику, метрики, учитывающие цитируемость и лексику статей, а также метрики на уровне авторов и метрики на уровне журналов, позволяющие устранить недостатки известных метрик. Использование предложенных метрик позволяет автоматизировать анализ и сравнение научных публикаций и периодических изданий.

The use of Behavioural Synthesis for hardware generation of a contour-based image segmentation method is considered. The segmentation method chosen, is a well-known, state-of-the-art, robust, efficient and fast-converging one, that combines functionals depending on the curve geometry and image properties in a level-set framework. The cost function sought to be minimized, is formulated as a weighted sum of three integral measures; a robust alignment term that leads the evolving surface to the edges of the desired object, a minimal variance term that measures the homogeneity inside and outside the object, and a geodesic active surface term that is used mainly for regularization. The algorithm is initially implemented in MatLab and ADA and subsequently, it is ported to our Behavioural Synthesis tool, the CCC HLS framework, which is capable of delivering correct-by-construction RTL VHDL implementations of computation-intensive applications. This way, behavioural ADA specifications are transformed into RTL micro-architectures which then can be easily implemented by commercial RTL synthesizers.

This paper presents a new method for character recognition that is based on the concept of competing cellular automata. A new type of cellular automata, which move trajectory coincides with the character shape is represents. The advantage of this method is the insensitivity to the character size, lines thickness and proportion of fragments, distortion and partial overlapping symbols except the formation of joint lines. To optimize the recognition efficiency and speed offered the cellular automata competitive process; developed its algorithms and methods of interaction. To implement the proposed algorithms the modeling program was created. This software allowed to evaluate the effectiveness of cellular automata techniques and conduct experiments on English alphabet character recognition. It was demonstrated the successful recognition partly distorted characters and such imposed without forming joint lines. On the basis of these experiments authors concluded the prospects of using the proposed method in handwriting recognition. To create a real system it’s need to develop subsystem of interaction with scanning equipment, text segmentation principles, clearing it from the noise and automatic creation of cellular fields and output the recognition results.

The problem of robust guaranteed inventory control synthesis for supply networks with parametric uncertainty under action of unknown, but bounded external demand and availability of non-symmetrical constraints on the values of states and controls is solved. The control law is constructed in the form of a linear dynamic feedback with respect to deviation between cash and safety stock levels of resources. In order to suppress the influence of external perturbations, modeling changes in demand, while ensuring robust stability of the closed system the method of invariant ellipsoids is used, which has been improved through the use descriptor system approach and building parameter-dependent Lyapunov function, which reduces the impact degree of uncertainty of the transport time-delays on the result of the synthesis control. With the help of the linear matrix inequalities technique the control synthesis problem is presented as a series of semidefinite programming, for solving which is used open source software. In the framework of the proposed method is possible to choose the optimal values of safety stock levels of resources, as the resulting solution determines, in fact, an algorithmic relationship between the levels of safety stocks and the optimal value of the quality criterion. The numerical example is considered.

In herein paper is described the problem of triangular mesh generation for complex geometrical domain. Functional approach is used for a geometrical object representation. Vladimir Rvachev’s R functions are used also. Functional approach is based on implicit functions and logical operations (negation, conjunction and disjunction) over these functions. Logical operation is a special real-value function that at inner point is greater than zero and at outer point is less than zero. Thus standard triangulations techniques, which based on predefined boundary discreet model, is less efficient. During background grid method for triangulation, triangles are built in domain directly. Presented method starts with a mesh that can be relatively easy generated (e.g. uniform mesh). Next, initial mesh is defined as a set of all inner elements. The last one generates a layer of elements near boundary (adaptation step). Adaptive method generates meshes that are close to uniform for structured background grids.

In the paper, a mathematical model of an H-plane three-port waveguide junction with an arbitrary-triangular coupling cavity has been presented and justified. The problem of scattering of waveguide modes is formulated as a boundary-value problem for the Helmholtz equation with the homogeneous Dirichlet boundary conditions on the periphery of the unit, radiation conductions in the waveguides and with the edge condition. The model is based on a trigonometric-series representation of the sought-for field in the triangular connecting region, which is constructed using the domain-product technique. The conventional expansion is revised to improve convergence properties of the used sine series. Properties of the infinite set of linear algebraic equations, which arises in the course of solving the problem, are studied. After simple modification, the system of equations is turned into an equivalent system, which is of the same kind as the system examined in the first part of the paper in analyzing the similar E-plane structure. In the space 1 1 1 (3) l1 = l ⊕l ⊕l (l1is the sequence space of absolutely convergent series), this fact allows to interpret the set of transformed equations as a single functional equation with the Fredholm operator and to prove that the derived equation has a unique solution, which can be found by means of the truncation method convergent in the norm of (3) l1 .