A scheme of a flexible manufacture cell (FMC) with the placement of mechanical equipment (by the example of Sumgayit State University) for manufacturing mechatronic elements of innovative projects in the industrial pa...
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In this paper we study an elastic-plastic isotropic body weakened by a rectilinear crack, directed along the abscissa axis, under the action of stresses symmetrical about its plane. An approximate (analytical and nume...
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ISBN:
(数字)9781728171807
ISBN:
(纸本)9781728171814
In this paper we study an elastic-plastic isotropic body weakened by a rectilinear crack, directed along the abscissa axis, under the action of stresses symmetrical about its plane. An approximate (analytical and numerical) solution of this problem is constructed under the condition that the hydrostatic deformation of the split expansion is approximated by a parabola. The concentration of hydrogen near the top of the crack is calculated. Note that when using the above calculation formulas, at each node we get several approximations to the exact solution. In the proposed methods, only three appeals to the right-hand side of the differential equation are necessary to obtain both the third order accuracy method and the two approximations (upper and lower) of the second order of accuracy.
The next phase of LHC Operations-High Luminosity LHC (HL-LHC), which is aimed at ten-fold increase in the luminosity of proton-proton collisions at the energy of 14 TeV, is expected to start operation in 2027-2028 and...
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A scheme of a flexible manufacture cell (FMC) with the placement of mechanical equipment (by the example of Sumgayit State University) for manufacturing mechatronic elements of innovative projects in the industrial pa...
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A scheme of a flexible manufacture cell (FMC) with the placement of mechanical equipment (by the example of Sumgayit State University) for manufacturing mechatronic elements of innovative projects in the industrial park of the university has been proposed. When creating a flexible manufacture cell in the university's industrial park, the authors carried out scientific research on the planning of technological processes and the kinematic analysis of a crane-manipulator in a flexible manufacture cell using an algorithm for modeling logical predicates. Based on the three-dimensional kinematic diagram of the crane-manipulator, its linear motion path with generalized coordinates for servicing 4 mechanical machines was determined. For functional modeling of FMC based on the graph theory of a Petri net, the actions of this object were studied and a graph-scheme of functional modeling of a lathe module in FMC was constructed. The authors determined the addressing parameters in the structure of FMC for the implementation of joint management of the network of the technological process under study.
this paper proposes a new collaborative filtering method with the calculation of unknown similarity coefficients between users via the application of production rules, which aims to improve the work quality of recomme...
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ISBN:
(数字)9781728137780
ISBN:
(纸本)9781728137797
this paper proposes a new collaborative filtering method with the calculation of unknown similarity coefficients between users via the application of production rules, which aims to improve the work quality of recommendation systems, to develop of production rules for the developed system. The methods used are: graph theory, the theory of algorithms, mathematical statistics, object-oriented programming, and fuzzy logic. The developed systems are new collaborative filtering method with the definition of unknown similarity coefficients between users through the application of production rules was developed, software for the implementation and testing of this method was developed, experiments on the developed software was conducted. The production rules to determine unknown similarity coefficients in recommendation systems was proposed. The new method of collaborative filtering with the application of production rules has been developed to find unknown similarity coefficients between users that may be possibly used to improve the work quality of the recommendation system. The conducted experiments showed that the developed method enhances the quality indicators of the recommendation system, such as item space coverage and the total number of predicted preferences of users.
This work presents results of computer simulation of a flat reflective array of rectangular waveguides and results of the investigation of the influence of phase errors on the formation of the radiation field.
This work presents results of computer simulation of a flat reflective array of rectangular waveguides and results of the investigation of the influence of phase errors on the formation of the radiation field.
Formal methods (in a broad sense) have been around almost since the beginning of computer science. Nonetheless, there is a perception in the formal methods community that take-up by industry is low considering the pot...
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A mathematical model of injection of liquid sulfur dioxide into a porous medium saturated with water and methane, accompanied by the formation of SO2 gas hydrate on the frontal surface is presented. The dependences of...
A mathematical model of injection of liquid sulfur dioxide into a porous medium saturated with water and methane, accompanied by the formation of SO2 gas hydrate on the frontal surface is presented. The dependences of the temperature and the coordinates for the formation front of sulfur dioxide gas hydrate on the pressure of the injection and the initial pressure of the layer are explored. It is established that at sufficiently high injection pressure values and the initial temperature of the layer, as well as the low values of the layer’s initial pressure, the temperature of the porous medium on the boundary of gas hydrate formation of sulfur dioxide may rise above the decomposition’s equilibrium temperature of the gas hydrate of sulfur dioxide. This corresponds to the appearance of a zone in a porous medium saturated with a mixture of water, sulfur dioxide and its gas hydrate, being in a state of phase equilibrium.
The paper presents the construction and analysis of vibration problem of thermoviscoelastic shells under the influence of non-stationary heat and under forced loads. The studied model was based on application of simpl...
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ISBN:
(纸本)9781538628751
The paper presents the construction and analysis of vibration problem of thermoviscoelastic shells under the influence of non-stationary heat and under forced loads. The studied model was based on application of simplest finite element semidiscretization to mixed variational problem of dynamical thermoviscoelasticity. The problem in addition to the mutual influence of temperature field and stress field is also taken into account the viscoelastic properties of the material thin wall body. For assumptions quite suitable for applications we prove the well-posedness forthis model of time harmonic vibrations.
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