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SAEQ Issue 02

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Release : 2014-03-20
Genre : Science
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Download or read book SAEQ Issue 02 written by . This book was released on 2014-03-20. Available in PDF, EPUB and Kindle. Book excerpt: Issue 02 Jan-Feb-Mar 2014 The Characteristic Analysis Of Changes In The Processes, Phenomena And Effects Within Working Layers Of Metal Polymer Pairs During Electro-Thermo-Mechanical Friction A.Kh. Janahmadov, A.I. Volchenko, M.Y. Javadov, D.A. Volchenko, N.A. Volchenko, E.A. Janahmadov The wave nature of changes in the external and internal characteristics of the metal polymer pairs at the electro-thermo-mechanical friction. The Research And Development Of The Highly Efficient Catalyst Of The C3-C4 Hydrocarbon Processing S.R. Rasulov, N.A. Salimova, G.R. Mustafaeva, L.V. Huseynova The effect of the different input methods of modifiers is studied: ion exchange, impregnation and dry mechanical mixing of catalytic properties of the zeolite base catalyst at the C3-C4 hydrocarbon conversion. The obtained quantitative data helps to identify the significant differences for the thermo-steaming and thermal activation of the modified catalyst exhibited during the conversion of the C3-C4 hydrocarbons and the selectivity of aromatic hydrocarbons. It is shown that the sample made of by the mechanical mixing with a subsequent high temperature treatment is most active.The regularities of the reaction-regeneration cycles are established. Technological Aspects Of Machine Parts Durability Improvements A.M. Gafarov, P.G. Suleymanov, V.A. Gafarov, F.M. Kalbiyev Based on the papers of national and foreign authors, the technological overview of the machine parts wear resistance is given in the paper. The obtained data is analyzed. The Study Of Factors Affecting On The Heating Of Elastic Elements Of The Coupling I.A. Khalilov The article studies the heating of the elastic element of the coupling depending on the influencing factors such as the damping capacity of the coupling, the ratio of the inertia moments in the driving and driven machinery details, the heat transfer coefficient and the cooling area of the of the elastic element of the coupling and the circumferential frequency of oscillation of the machinery driving system.

SAEQ Issue 09

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Release : 2016-09-28
Genre : Science
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Download or read book SAEQ Issue 09 written by . This book was released on 2016-09-28. Available in PDF, EPUB and Kindle. Book excerpt: Issue 09 July-August-September 2016 The Creation Of Fluid And Gas Mechanics Basis In The Micro-Cracked Channel R.S. Gurbanov, M.A. Mammadova, A.A. Hajiyev There are experimental investigations of the fluids flow in the small-sized channels, the hydraulic resistances results of which are more than the estimated ones according to theoretical formulas and different supposed explanations without the quantitative evolution have been given in the reference. Taking into consideration this situation in the mechanics we were conducted the experiments in special developed unit with different fluids: water, viscous and anomalous oils. The results of the numerous experimental investigations for deter- mining new effect of fluid mechanics in the micro-cracked channels have been given in this work. Firstly the experimental-estimated methodology in the “micro-crack fluid” system has been proposed and realized for the quantita- tive estimation of the hydraulic resistances. This approach allows to conduct hydrodynamic engineering estimations for fluids flow in the fractured-porous medium, in the mechanical engineering, in the lubrication systems of instrument engineering and also for solutions of the sealing problems in different branches of industry and medicine. Multi-Criterial Estimation Of The Level Of Corrosion Damage Of The Gas-Pipeline Areas In The Ambiguous Expert Opinions S.A. Aghammadova The linguistic model has-been developed for the estimation of the corrosion damage level of the gas-pipeline areas in the optimistic and the pessimistic expert opinions of the influencing factors. For solving of the given task generalization of the method of multi-criterial choice of the best alternative in the case of rules of fuzzy productions has been chosen, antecedents and consequents of which have been by fuzzy sets with multi-semi functions of belonging. Wavelet Method For Solving Problems Of Unsteady Fluid Filtration In The Crack-Porous Ring Type Formation O.A. Dyshin Based on the multiple-scale analysis in L^2(R^3) using discrete wavelet transform with separable orthonormal basis we’ve developed a method of sustainable approximate calculation of the classical solution of the initial-boundary value problem of unsteady fluid filtration in the crack-porous ring-type formation. The problem is reduced to solving ill-posed problem of finding the solution of linear polynomial equation given inaccurate data, when the approximate solution constructed by regularization method is stable with respect to error in differential equations ratios and boundary conditions set up, as well as set up right member falseness. Decision Making In The Multi-Criteria Problems Of Alternatives Using The Bayesian Interval Inference Methods R.F. Hajiyeva The Bayesian inference method is used in the decision process of the multi-criteria problems using the strength of information on the product rules. Using these mechanisms the point and interval estimates of the posterior probabilities are built on their prior probabilities, derived from the composite aggregation rules of the alternative description information of the decision-maker preferences defined by a fuzzy expert judgements. These decision logic is applied to the problem of selecting a candidate on the vacant faculty position in university Comparative Analysis Of Trading Systems Performances With Respect To Transaction Cost E.J. Janahmadov The purpose of this paper is to compare and analyze the performance of trading rules applied to the underlying and derivative products. Three different trading market indictors were chosen from the range of trading rules according to their performance relatively to Dow Jones Industrial Average. On the basis of these technical indicators the automated trading systems were developed and then applied to the underlying instrument such Dow Jones Industrial Average. The performances of trading systems and profit/loss indexes were compared and analyzed. The results are compared with “buy-and-hold” strategy and performance of underlying security. The results of the research intend to show the effect of the transactions costs on the performance of trading systems and optimal could be applied to invest into underlying or derivatives of underlying.

SAEQ Issue 07

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Release : 2016-03-28
Genre : Science
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Download or read book SAEQ Issue 07 written by . This book was released on 2016-03-28. Available in PDF, EPUB and Kindle. Book excerpt: Issue 07 Jan-Feb-Mar 2016 Assessment Of Irregularities-Bursts And Catastrophic Changes In Compressor Units A.M. Pashayev, A.Kh. Janahmadov, N.G. Javadov, M.Y. Javadov The paper assesses the type of irregularities of type bursts and disastrous wear during operation of the tested CU equipment. Using the flicker-noise spectroscopy (FNS), which is used to estimated the parameters of the singular component of the power spectrum of the signal and find significant changes in the dimensionless parameters of unsteadiness providing an indication of the approaching moments of a catastrophic deterioration of the equipment. Mineral Composition And Textural-Structural Peculiarities Of Ore, And Mineral Formation Stage Of The Gedabey Gold-Copper Deposit (Lesser Caucasus) M. Aliyev, G. Huseynov The mineral composition and textural and structural characteristics of ores are studied, also the phases and stages of mineralization, which are an important source of information on the conditions of formation of the deposit, time allocation of gold and its spatial association with certain mineral assemblages and associations. Consideration of these issues can come to an understanding of the factors behind the differences in the scale and extent of gold deposits of various types, as well as to form a mineralogical search features gold-bearing mineralization. Development Of Decision-Making Algorithm On Efficiency Of Operators And Traffic Controllers Of Air Transport Based On Their Psycho-Physiological Conditions And Productivities R.M. Jafarzade, T.R. Jafarzade By processing the data on the human-operator active performance with respect to their psycho-physiological conditions and productivities in the human-machine systems, we developed the algorithm for the possibilities of further execution of their (operator) duties in the incomplete and unclear initial data. Using fuzzy clustering and the interval fuzzy sets of the second type, and the coordinated assessment of expert opinions on the binary relationship of objects from the class with recommendations on the further implementation of their activities, we obtained the individual assessment of the alternative recommendations for each of the tested objects from the set of objects. The calculation for the experimental data is provided. The proposed approach can be used for the adaptive selection of recommendations on the continuation of duties of air operators and air traffic controllers by taking into account the dynamic of changes of their psycho-physiological states and productivities. Management Of Portfolio Of Securities On The Basis Of Minimization Of The Conditional Expected Losses S.M. Javadova On the basis of a method of empirical averages for the general problem of stochastic programming, convergence of the solution of an approximating task to the solution of a problem of conditional minimization of the expected losses when forming an investment portfolio is proved. Numerical calculations on a concrete example of two joint stock companies are received by means of the program of linear programming in MATLAB system.

SAEQ Issue 03

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Release : 2014-06-26
Genre : Science
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Download or read book SAEQ Issue 03 written by . This book was released on 2014-06-26. Available in PDF, EPUB and Kindle. Book excerpt: Issue 03 Apr-May-June 2014 The Frictional Interaction In Electrical And Thermal Fields Of Metal Friction Pairs A.Kh. Janahmadov, A.I. Volchenko, E.S. Pirverdiev, D.A. Volchenko, N.A. Volchenko, D.Y. Zhuravlev The article examines the origins and development of the electrical and thermal explosions in the polymer lining subsurface layers, as well as the discharge penetrating through the layers of micro-protrusions. The Development Of Mathematical Models With “Skin-Factor” For The Petroleum Reservoir Filtration Ab.G. Rzaev, S.R. Rasulov, I.A. Abbasova, S.N. Rahimova The paper proposes a modified Dupuis formula, which describes the filtration process based on “skin-factor” of the polluted near oil-well area. The viability of proposed model is provided. The regularities of the reaction-regeneration cycles are established. The Safety Management Based On The Probabilistic Risk Assessment T.R. Jafarzade The probability estimation of potentially dangerous (basis) events is conducted on the basis of the current values of the risk factor given the risk significance of the individual components responsible for the flight safety. The flight is viewed as a random process described by a stochastic differential equation. The author raises the issue of absolute and guaranteed safety. The Mass-Transfer At The Wastewater Countercurrent Extraction Processes Inside Of The Spray Tower And Its Modeling A.A. Gasanov The wastewater treatment technology is developed on the basis of the solvent extraction using a spray extractor. In the paper the optimal process parameters are proposed and the consumption rates for continuous and dispersed phases are justified. The research results of the wastewater treatment produced by the paint and varnish manufacturers from butylglycol, phenilizopropanol, acetic acid and acetylacetone are included in the paper. The mathematical model of process is proposed; the specific area of the contact surface, the distance between the extractor cells, the coefficients of mass-impact and mass-transfer of the phase components are defined; the component concentrations in opposite phases and the aggregate height are calculated. The Deformation And Break Up Of Drops And Bubbles In The Isotropic Turbulent Flows G.I. Kelbaliyev, L.V. Guseynova, S.R. Rasulov, G.Z. Suleymanov The research paper is dedicated to the phenomena of deformation and break up of drops in the isotropic turbulent flow. The phenomena has been analyzed, modeled and compared with the experimental data. As a result of that research, the analytical solution is provided for the given problem, the expressions for estimation of the deformation level and the break up frequency depending on Red and Mo numbers have been obtained.

SAEQ Issue 05

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Release : 2022-03-16
Genre : Science
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Download or read book SAEQ Issue 05 written by . This book was released on 2022-03-16. Available in PDF, EPUB and Kindle. Book excerpt: Issue 05 Oct-Nov-Dec 2014

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