CONTENTS
THEORY OF CONTROL
[spoiler=K.R. Aida-zade, S.G. Talıbov, V.А. Hashimov. Optimization and control of placements of point dampers on the plate (rus.)]UOT 519.622
K.R. Aida-zade, S.G. Talıbov, V.А. Hashimov
Optimization and control of placements of point dampers on the plate
The problem of optimal control by processes of stabilization of the two-dimensional thin plate variations is investigated. The stabilization is carried out by point-controlled dampers of vibrations installed on the plate. The placements and modes of operation of dampers are optimized. The methods of optimization of the first order are used for the numerical solution. The formulas for the functional gradient are obtained. The results of numerical experiments are given.
Keywords: vibrations of the plate, soothing vibration, δ - function, functional gradient, the placement of damper
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[spoiler=E.A. Garayeva, K.B. Mansimov. Suffisient optimality condition for the one discrete control problem (rus.)]UOT 517.977
E.A. Garayeva, K.B. Mansimov
Sufficient optimality condition of the Krotov type for one discrete control problem
The paper considers one discrete control problem. Bellman-Krotov type formalism sufficient optimality condition is obtained.
Keywords: discrete control problem, sufficient optimality condition, Bellman-Krotovs formalism
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[spoiler=V.M. Abdullayev, S.G. Talıbov. Numerical solution of inverse problems for loaded dynamic systems (rus.)]UOT 519.622.2
V.M. Abdullayev, S.G. Talıbov
Numerical solution of inverse problems for loaded dynamic systems
The numerical solution of optimization problem of corresponding functions of reaction loading places re-spectively the objects described by systems of loaded ordinary differential equations are investigated. For optimiza-tion, the functional of the problem using numerical first-order methods analytical formulas for the gradient of the functional with respect to optimized parameters of loading were obtained. The results of numerical experiments are present. The proposed approach can be also applied to optimize parameters of loading for distributed systems de-scribed by differential equations with partial derivatives, which are reduced to the studied problem using the method of lines.
Keywords: loaded differential equations, place of loading, reaction to loading, optimal control, nonlocal condi-tions, the inverse problem, integral conditions
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[spoiler=Y.R. Ashrafova. Optimal control by evolution processes without any accurate information about initial conditions (rus.)]UOT 519.6
Y.R. Ashrafova
Optimal control of evolutionary processes in the absence of accurate information on their initial conditions
Optimal control problems for evolutionary processes without accurate information on the initial conditions are considered in the paper. We study two kinds of processes: the heat conductivity process and the wave process. The analytical formulas for the gradient of the target functional are obtained for corresponding optimal control processes. These formulas allow for using the first order optimization methods to solve the problems. The numerical experiments are carried out by using the proposed approach and an analysis of the obtained results is given.
Keywords: problem without initial conditions, optimal control problem, heat conductivity process, wave process, method of gradient projection
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[spoiler=A.Y. Jabbarova. On Krotovs type sufficient optimality condition in Roesser type hybrid systems (rus.)]UOT 517.9
A.Y. Jabbarova
On Krotovs type sufficient optimality condition in Roesser type hybrid systems
The paper conciders one hybrid optimal control problem tof he Roesser type. Krotov type sufficient condition is obtained.
Keywords: Roesser type system, sufficient optimality condition, maximum principle, hybrid sistems
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MODELING AND IDENTIFICATION
[spoiler=K.Sh. Mammadov, N.N. Mammadov. The concept of guaranteed solution and guaranteed suboptimal solution relative to the target function in the problem about the satchel and its construction (azerb.)]UOT 519.852.6
K.Sh. Mammadov, N.N. Mammadov
The concept of guaranteed solution and guaranteed suboptimal solution relative to the objective function in the knapsack problem and its construction
The concept of guaranteed solution and guaranteed suboptimal solution relative to the objective function in the knapsack problem is introduced. An algorithm for constructing a guaranteed suboptimal solution due to the minimal changes coefficient of the objective function in the set of integer intervals is developed. One example is solved with the use of this algorithm.
Keywords: Knapsack problem, suboptimal solution, guaranteed solution, guaranteed suboptimal solution
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[spoiler=P.S. Jafarov, E.R. Zeynalov, A.M. Mustafayeva, S.M. Jafarov. Analytical synthesis of the robust regulator with fuzzy T-S model for object control – OD mobile robot with irregular movement (azerb.)]UOT 6250/519.7:816
P.S. Jafarov, E.R. Zeynalov, A.M. Mustafayeva, S.M. Jafarov
Analytical synthesis of the robust regulator with fuzzy T-S model for object control – OD mobile robot with irregular movement
A technique of analytical synthesis of a fuzzy controller with T-S model providing the robust stability for nonlinear control system for an object with parametric uncertainty is proposed. The efficiency of the proposed methodology of analytical synthesis of a fuzzy controller on the example of the development of an OD mobile robot management system is shown.
Keywords: fuzzy controller with T-S model, robustness, degree of stability, object with irregular movement, parametric uncertainty
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[spoiler=R.T. Aliyev. Asymptotic expansions for the first four moments of the Sparre Andersen ınsurance risk process (rus.)]UOT 518.2
R.T. Aliyev
Asymptotic expansions for the first four moments of the Sparre Andersen insurance risk process
The Sparre Andersen insurance risk process is considered. The asymptotic expansions for the first four moments of this process at large t and asymptotic equivalence for the variance, skewness and kurtosis of the process are derived.
Keywords: insurance risk process, asymptotic expansion, moments, skewness, kurtosis
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[spoiler=R.I. Davudova. Evolutionary calculations in the cluster analysis problems (rus.)]UOT 519.7
R.I. Davudova
Evolutionary calculations in the cluster analysis problems
Automatic classification problems (ACP) of objects described by numerical attributes are investigated. The paper is devoted to the use of the evolutionary algorithms (EA) in cluster analysis problem. For the solution of the cluster analysis problem, a new approach is offered which is based on evolutionary calculations by Lamarck's principle
Keywords: functionality quality, evolution, Lamarckism, crossover, mutation, population, individual, child, outbreeding, inbreeding
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[spoiler=F.R. Nuriyeva. Heuristic grid algorithm for traveling salesman problem (eng.)]UOT 519.8
F.R. NURIYEVA
HEURISTIC GRID ALGORITHM FOR TRAVELING SALESMAN PROBLEM
In this paper, a new heuristic grid algorithm is proposed for TSP. In this algorithm, a grid is constructed by selecting specific vertices firstly, then accepting these vertices as starting points, NND algorithm is applied in order to find a tour that includes all of the vertices. Most of the sample problems from TSPLIB Library are solved with NN, NND and the proposed algorithm respectively and their results are comparatively analyzed. Experimental results show that the algorithm proposed in this study could be accepted as an efficient alternative.
Keywords: traveling salesman problem, heuristic algorithms, nearest neighbour algorithm, nearest neighbour algorithm from both end points
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[spoiler=A.T. Iskenderova. Diagnosis of hydrate formation in the plume of gas gathering on scalar state variable (rus.)]UOT 681.5:622; 62.19
A.T. Iskenderova
Diagnostics of hydrate formation in the gas gathering loop based on scalar state variable
The author considers the current practice of diagnosing hydrate formation in gas gathering loops, where the temperature and pressure of the raw gas at the end of the loop are used as state variables. At the same time, widely used diagnostic statistical models such as Bayes models are analyzed in three-dimensional space, which is associated with certain difficulties. It is therefore of interest to consider the possibility of using scalar state variable, in particular, the temperature for the diagnosis of CS in the loop. This analysis model is simplified considerably.
Keywords: diagnostics, loop, hydrate formation, state variable, set of states, classification
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INFORMATION TECHNOLOGY AND SYSTEMS
[spoiler=T.A. Aliyev, G.A. Guluyev, As.H. Rzayev, Y.G. Aliyev, M.H. Rezvan. Energy saving variable frequency converters (azerb.)]UOT 004.021
T.A. Aliyev, G.A. Guluyev, As.H. Rzayev, Y.Q. Aliyev, M.H. Rezvan
Energy saving variable frequency converters
Different features of asynchronous motor controlled by direct and variable frequency drive (VFD) are compared. Energy saving principles are explained and energy saving sources of VFD are explored. Energy saving of Beam Pumping station which belongs to the group of "Energy-saving equipment" is reported and the necessity of mass used of energy-saving devices is emphasized.
Keywords: variable frequency drive, energy-saving equipment, energy-saving source, regeneration, asynchronous motor, soft control, speed and torque control, energy saving
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[spoiler=E.G. Shahbazov. Elaboration and development prospective of principles of nanotechnological processes in oil industry (rus.)]UOT 620.5
E.G. Shahbazov
Elaboration and development prospective of principles of nanotechnological processes in oil industry
For the first time in Azerbaijan, on the basis of "small concentration and perturbations" effect, the scientific research laboratory and field test jobs on the improvement of technical–technological and economic indicators of oil and gas production were carried out. As a result of development and introduction of nanotechnologies in marginal and flooded wells of OGPD "Siyazanneft", "Gum adasi", "Absheronneft" , "Bibiheybatneft" and in previous "Surakhanyneft" PU "Azneft", the oil production was increased up to 2 times, energy consumption for oil production was reduced by 15 % , and the amount of water in the recovered fluid was reduced by 50%.
Keywords: oil industry, nanotechnological processes, nanoparticles, nanophenomenon in oil gas formations, nanofluids
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[spoiler=R.R. Rzayev, E.T. Aliyev. Evaluation of balanced costs in the framework of FAO UN projects by using fuzzy inferences system (rus.)]UOT 336.69
R.R. Rzayev, E.T. Aliyev
Evaluation of balanced costs in the framework of FAO UN projects by using fuzzy inferences system
The authors develop a fuzzy model to estimate balanced budgets of FAO projects for compliance with the new FAO financial policy in costs. The model is tested on the example of three randomly selected projects and their respective budgets are ranked based on point estimates of fuzzy interpretations of their balance degree.
Keywords: FAO project, fuzzy set, implication rule, point estimate of fuzzy set
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[spoiler=G.G. Abdullayeva, I.A. Ismayilov. The constructıon of the battery of expert systems for the defınıtıon of etımologıes of etnonyms (on the example of oghuz ethnonyms) (rus.)]UOT 681.3:629.73
G.G. Abdullayeva, I.A. Ismayilov
Construction of the battery of expert systems for determining the etymology of ethnonyms
(on the example of Oghuz ethnonyms)
In the paper, the idea of developing the battery of the expert systems (BES) for solving multidisciplinary problems of ethnonymics on the example of Oghuz ethnonyms is considered. The complexity of ethnonymics problems and the impossibility of solution by subject matter experts are shown. The deep survey of researches concerning ethnonyms of 24 Oghuz tribes is carried out. The proposed battery is designed from different elements. The principles of constructing Turkic phonetics ES and knowledge bases, with some heuristic rules are described. Some results of the testing of the prototype ES battery are presented.
Keywords: expert system, knowledge base, rules, battery of expert systems
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[spoiler=U.E. Sattarova, U.N. Gozali. Writing mobile application for smartphones using with Java programming language (azerb.)]UOT 004.42
U.E. Sattarova, U.N. Gozali
Developing a Java-based smartphone application
The authors considered writing a mobile application using Java programming language. Application development stages are demonstrated, describing the role of Android Studio, Interface design, development of images and blocks, and the sequence of writing codes is given.
Keywords: programming, interactive, extension, values, block, script, application, Java, Android Studio, HTML
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15.05.2024
3rd International Conference on Problems of Logistics, Management and Operation in the East-West Transport Corridor (PLMO 2024) will be held -
23.04.2024
2nd International Conference on Information Technologies and their Applications to be held -
29.03.2024
A meeting of ED 1.20 Dissertation Council will be held -
18.03.2024
Regular meeting of the Science Council will be held