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Articles 31 - 60 of 126
Full-Text Articles in Physical Sciences and Mathematics
Solving Differential Matrix Equations For Surface With Respect To Action Of Group Of Lorence, U. Bekbayeva, K. Muminov
Solving Differential Matrix Equations For Surface With Respect To Action Of Group Of Lorence, U. Bekbayeva, K. Muminov
Scientific journal of the Fergana State University
In The artlcle a description is given for the system of differential matrix equations, the solutions of which regenerate the class of surfaces in 4 – dimensional space, which are equivalent with respect to the action of group - O(3,1).
Copolymerization Of Methylacrylate And Acrylic Acid, N Y. Bozorov, V. O. Kudishkin
Copolymerization Of Methylacrylate And Acrylic Acid, N Y. Bozorov, V. O. Kudishkin
Scientific journal of the Fergana State University
Linear copolymers of methylacrylate and acrylic acid with different content of monomer units have been synthesized by classical radical copolymerization in dioxane solution and in the block. The composition of copolymers was determined. The relative activities of the monomers calculated by the methods of Fineman - Ross and Kelen -Tudos. It is shown that the activity of acrylic acid can vary depending on the medium in which copolymerization is carried out.
Tricomi Type Problem For Mixed Type Equation With Sub-Diffusion And Wave Equation, E. Karimov, S. Kerbal
Tricomi Type Problem For Mixed Type Equation With Sub-Diffusion And Wave Equation, E. Karimov, S. Kerbal
Scientific journal of the Fergana State University
In this paper, we have considered a Tricomi type problem for mixed type equation with Hilfer’s double order derivative sub-diffusion equation and classical wave equation in a composite domain. Main methods of the investigation are a method of integral equations and energy integrals’ method.
Sorption Of Copper (Ii), Nickel (Ii) And Cobalt (Ii) Ions Into The Ionite Modified By Polyphinylchloride And Polyethylene Polyamine, Kh Ismoilova, D Bekchanov, Sh Khasanov, M Baltaeva
Sorption Of Copper (Ii), Nickel (Ii) And Cobalt (Ii) Ions Into The Ionite Modified By Polyphinylchloride And Polyethylene Polyamine, Kh Ismoilova, D Bekchanov, Sh Khasanov, M Baltaeva
Scientific journal of the Fergana State University
IPolyphinylchloride was modified by polyethylene polyamine, and the ionites were studied in static conditions by the artificial solution of copper (II), nickel (II) and cobalt (II) ions. In static conditions, factors affecting the sorption process, such as time, temperature and concentration dependence were investigated. The results of the inquiry process were studied by IR analysis
Defining The Antioxsidants Quantity In Certification Of The Chicken Meat, B. N. Sattarova, I. R. Asqarov, Sh. X. Abdulloev
Defining The Antioxsidants Quantity In Certification Of The Chicken Meat, B. N. Sattarova, I. R. Asqarov, Sh. X. Abdulloev
Scientific journal of the Fergana State University
The article presents an analysis of the results obtained by chromatography-mass-spectrometric studies to determine the mass fractions of certain antioxidants in chicken meat, the excessive amount of which seriously threatens human health. The advantages of this method in the certification of meat products are substantiated. It has been established that the content of alpha-tocopherol in chicken meat imported from some foreign countries is several times higher than that produced in local poultry farms.
Solution Of Cancerogen Asbestos Problems In Obtaining Harmless Fibre Products, M. A. Axmadaliev, I. R. Asqarov
Solution Of Cancerogen Asbestos Problems In Obtaining Harmless Fibre Products, M. A. Axmadaliev, I. R. Asqarov
Scientific journal of the Fergana State University
The article presents the ways of obtaining ecologic harmless composite materials based on mineral fibers in the replacement of asbestos containing goods
Formation Of Stochastic Competence In Mathematics Lessons, A. Yusupova, Z. Mukimova, Kh. Ibrokhimova
Formation Of Stochastic Competence In Mathematics Lessons, A. Yusupova, Z. Mukimova, Kh. Ibrokhimova
Scientific journal of the Fergana State University
This article presents methods for the formation of student stochastic competence.
Development Of An Algorithm For The Intelligent Decision Support Systems In The Field Of Tax Authorities, Odilbek Аskaraliev
Development Of An Algorithm For The Intelligent Decision Support Systems In The Field Of Tax Authorities, Odilbek Аskaraliev
Bulletin of TUIT: Management and Communication Technologies
An algorithm for the intellectual support of decisions in integrated management systems has been developed, its main components have been described, its structure has been formed, and algorithms have been developed to work in several modes that increase management efficiency on the example of tax authorities. An alternative solution structure has been designed and developed for management decision making. An integrated functional structure has been developed for the overall decision-making system. The process of operation of the proposed intelligent decision-making system for an integrated management system is shown. Issues of improving management efficiency by supporting intelligent decision-making are analyzed. An …
Model Of The State Of Threats To The Access Control System, Durdona Irgasheva
Model Of The State Of Threats To The Access Control System, Durdona Irgasheva
Bulletin of TUIT: Management and Communication Technologies
This article is devoted to the presentation of the threat state model of access control, which allows calculating the probabilities of the impact of threats on the access control system and the probability of opening this system based on taking into account the generalized algorithm for the implementation of external threats, and determines the need to develop additional components of the access control system designed to identify and classify attacks.
Methodology Of Management Monitoring For Flow Rivers Issue Issue, Toshtemir Khojakulov
Methodology Of Management Monitoring For Flow Rivers Issue Issue, Toshtemir Khojakulov
Bulletin of TUIT: Management and Communication Technologies
The article reviewed the development of the all the goals of the UzB are “... shaped in the form of global aspirations, and each government sets its own national goals, in cases where several states are monitoring a single trans boundary watershed, efforts should be made to agree on targets for all countries. Water quality comparison.
Mathematical And Computer Simulation Of The Processes Of Two-Phase Joint Gas Filtration And Water In A Porous Environment, Elmira Nazirova
Mathematical And Computer Simulation Of The Processes Of Two-Phase Joint Gas Filtration And Water In A Porous Environment, Elmira Nazirova
Bulletin of TUIT: Management and Communication Technologies
A mathematical model, methods and algorithms for the numerical solution of problems of joint gas-water filtration in porous media are considered. The mathematical model of the process of non-stationary joint gas-water filtration in a porous medium is described by a system of nonlinear differential equations of parabolic type. In the numerical solution of the boundary value problem of gas displacement by water in a porous medium, the differential sweeping method is used for systems of differential-difference equations. The system of differential-difference equations with respect to the gas pressure function is nonlinear, therefore, an iterative method is used for it, based …
An Analysis Of The Work Of Passengers Trains On Twozone Sections And Their Alert Automation, N. S. Tokhirov
An Analysis Of The Work Of Passengers Trains On Twozone Sections And Their Alert Automation, N. S. Tokhirov
Central Asian Problems of Modern Science and Education
Company "Uzbekistan railways" has made a great contribution to the safety of passenger traffic. It is expected that passenger trains will have a number of factors affecting the large passenger traffic in the coming days and will be in the future. That is why passenger trains require that the issuance of warnings from workers of the running facilities, electricity, signaling and communications, as well as station attendants at the station by dispatchers, be accurate and error free. This article describes the automation of issuing warnings for trains and trains at two zones
Development Of The Thickener Compositionwith Local Raw-Materials For Printing Blended Fabrics Cotton-Silk, F. N. Qurbonova, G. A. Ixtiyarova, X. Haydarova, N. Savriyeva
Development Of The Thickener Compositionwith Local Raw-Materials For Printing Blended Fabrics Cotton-Silk, F. N. Qurbonova, G. A. Ixtiyarova, X. Haydarova, N. Savriyeva
Central Asian Problems of Modern Science and Education
In the following article the developed new thickener are studied based on hydrolyzed acrylic emulsion (HAE), uzchitan and carbaxymethyl starch for printing mixed fabrics cotton-silk. Investigated coloristic prop- erty printed fabrics
Method For Determining Hydraulic Resistance During, K. Navruzov, Z. K. Shukurov, A. Sh. Begjanov
Method For Determining Hydraulic Resistance During, K. Navruzov, Z. K. Shukurov, A. Sh. Begjanov
Central Asian Problems of Modern Science and Education
In the article, pulsating fluid flows in tubes with changing walls, which are of great importance in biological mechanics, in particular, in the flow of blood in the arterial vessel, are investigated. The solution of the problem obtained formulas for the distribution of pressure gradient, velocity and flow rate. Impedance method analyzed the increase in hydraulic resistance depending on the frequency of oscillation. It was found that with large values 2 of hydraulic resistance grow with growth 2 . For crowding out the same flow rates, for small and with large values of the vibrational number or frequency, …
Mathematical Models Of Multi-Coordinate Electromechatronic Systems Of Intellectual Robots, H. N. Nazarov, R. O. Temurbek
Mathematical Models Of Multi-Coordinate Electromechatronic Systems Of Intellectual Robots, H. N. Nazarov, R. O. Temurbek
Central Asian Problems of Modern Science and Education
In the article mathematic description of mechatronic module in intelligent robots and robotic systems are observed. To display the structure of mechatronic modules, which consist of interrelated different electrical, magnetic and ELECTRONIC JOURNAL OF CENTRAL ASIAN PROBLEMS OF MODERN SCENCE AND EDUCATION. MARCH, 2019-I ISSN 2181-9750 81 mechatron components, mathematic models by the help of multiplication theory based on relations and visualising lines and points are designed. Analytical explanation of mechantronic modele in intelligent robots is provided
Development Of Linear Mathematical Models Of The Technological Process Of Crushing Seeds Crushing, F. Yusupov, T. Y. Kim, B. B. Nurmetova, J. M. Xojibayev
Development Of Linear Mathematical Models Of The Technological Process Of Crushing Seeds Crushing, F. Yusupov, T. Y. Kim, B. B. Nurmetova, J. M. Xojibayev
Central Asian Problems of Modern Science and Education
The simplified statistical linear model of the object under study is developed on the basis of experimental and statistical studies of the technological process of crushing the cottonseed of an oil extraction plant using the experimental design method. The analysis of the homogeneity of the dispersion, the significance of the coefficients of the linear model and the adequacy of the resulting model
Principles Of Automation Of Process Accounting And Control Devices Of Railway Automatics And Telemechanics, D. Kh. Baratov
Principles Of Automation Of Process Accounting And Control Devices Of Railway Automatics And Telemechanics, D. Kh. Baratov
Central Asian Problems of Modern Science and Education
The article deals with the issues of functional support of the automated system of accounting and control of railway automation and telemechanics devices: signaling, centralization and blocking; the components of the electronic Executive part of the system are presented; the conceptual model is proposed and the design features of the developed automated system are described.
Development Of The Thickener Compositionwith Local Raw-Materials For Printing Blended Fabrics Cotton-Silk, F. N. Qurbonova, G. A. Ixtiyarova, X. Haydarova, N. Savriyeva
Development Of The Thickener Compositionwith Local Raw-Materials For Printing Blended Fabrics Cotton-Silk, F. N. Qurbonova, G. A. Ixtiyarova, X. Haydarova, N. Savriyeva
Central Asian Problems of Modern Science and Education
In the following article the developed new thickener are studied based on hydrolyzed acrylic emulsion (HAE), uzchitan and carbaxymethyl starch for printing mixed fabrics cotton-silk. Investigated coloristic prop- erty printed fabrics
Principles Of Automation Of Process Accounting And Control Devices Of Railway Automatics And Telemechanics, D. Kh. Baratov
Principles Of Automation Of Process Accounting And Control Devices Of Railway Automatics And Telemechanics, D. Kh. Baratov
Central Asian Problems of Modern Science and Education
The article deals with the issues of functional support of the automated system of accounting and control of railway automation and telemechanics devices: signaling, centralization and blocking; the components of the electronic Executive part of the system are presented; the conceptual model is proposed and the design features of the developed automated system are described.
Method For Determining Hydraulic Resistance During, K. Navruzov, Z. K. Shukurov, A. Sh. Begjanov
Method For Determining Hydraulic Resistance During, K. Navruzov, Z. K. Shukurov, A. Sh. Begjanov
Central Asian Problems of Modern Science and Education
In the article, pulsating fluid flows in tubes with changing walls, which are of great importance in biological mechanics, in particular, in the flow of blood in the arterial vessel, are investigated. The solution of the problem obtained formulas for the distribution of pressure gradient, velocity and flow rate. Impedance method analyzed the increase in hydraulic resistance depending on the frequency of oscillation. It was found that with large values 2 of hydraulic resistance grow with growth 2 . For crowding out the same flow rates, for small and with large values of the vibrational number or frequency, …
An Analysis Of The Work Of Passengers Trains On Twozone Sections And Their Alert Automation, N. S. Tokhirov
An Analysis Of The Work Of Passengers Trains On Twozone Sections And Their Alert Automation, N. S. Tokhirov
Central Asian Problems of Modern Science and Education
Company "Uzbekistan railways" has made a great contribution to the safety of passenger traffic. It is expected that passenger trains will have a number of factors affecting the large passenger traffic in the coming days and will be in the future. That is why passenger trains require that the issuance of warnings from workers of the running facilities, electricity, signaling and communications, as well as station attendants at the station by dispatchers, be accurate and error free. This article describes the automation of issuing warnings for trains and trains at two zones
Development Of Linear Mathematical Models Of The Technological Process Of Crushing Seeds Crushing, F. Yusupov, T. Y. Kim, B. B. Nurmetova, J. M. Xojibayev
Development Of Linear Mathematical Models Of The Technological Process Of Crushing Seeds Crushing, F. Yusupov, T. Y. Kim, B. B. Nurmetova, J. M. Xojibayev
Central Asian Problems of Modern Science and Education
The simplified statistical linear model of the object under study is developed on the basis of experimental and statistical studies of the technological process of crushing the cottonseed of an oil extraction plant using the experimental design method. The analysis of the homogeneity of the dispersion, the significance of the coefficients of the linear model and the adequacy of the resulting model
Mathematical Models Of Multi-Coordinate Electromechatronic Systems Of Intellectual Robots, H. N. Nazarov, R. O. Temurbek
Mathematical Models Of Multi-Coordinate Electromechatronic Systems Of Intellectual Robots, H. N. Nazarov, R. O. Temurbek
Central Asian Problems of Modern Science and Education
In the article mathematic description of mechatronic module in intelligent robots and robotic systems are observed. To display the structure of mechatronic modules, which consist of interrelated different electrical, magnetic and ELECTRONIC JOURNAL OF CENTRAL ASIAN PROBLEMS OF MODERN SCENCE AND EDUCATION. MARCH, 2019-I ISSN 2181-9750 81 mechatron components, mathematic models by the help of multiplication theory based on relations and visualising lines and points are designed. Analytical explanation of mechantronic modele in intelligent robots is provided
Designing Of The Electronic Components Used In The Device For Biomedical Signals Measurement, H.N Zaynidinov, Sarvar Mahmudjonov
Designing Of The Electronic Components Used In The Device For Biomedical Signals Measurement, H.N Zaynidinov, Sarvar Mahmudjonov
Bulletin of TUIT: Management and Communication Technologies
Wireless health care monitoring technologies have the energetic to replace our lifestyle with various application uses in the field of such as healthcare management, retailer, travels, company, dependents care and urgent management, in addition to many area for improving. Electrocardiography (ECG) is a common technique for recording the electrical activity of human heart. Accurate computer analysis of ECG signal is challenging, as it is exceedingly prone to high frequency noise and various other artifacts due to its low amplitude. The accuracy of these algorithms relies on the low-pass and high-pass filtration of the input ECG signal. In this paper, it …
Mathematical Model And Algorithm For Calculating Complex Words In The Karakalpak Language, Shaxnoza Abidova
Mathematical Model And Algorithm For Calculating Complex Words In The Karakalpak Language, Shaxnoza Abidova
Bulletin of TUIT: Management and Communication Technologies
The article examines the morphology of the Karakalpak language, which belongs to the Kipchak group of the Turkic language family. The forms of word formation in the Karakalpak language, their sequences and the affixes added to the core are analyzed. On the basis of the analyzed affixes and suffixes, a complex mathematical model of word formation in the Karakalpak language was developed. On the basis of the developed mathematical model, an algorithm for creating a complex word in the Karakalpak language was developed. Using the developed mathematical model, a four-stage scheme was created for creating complex words of the Karakalpak …
Influence Of The Temperature To The Growth Of Thin Film Sno2, A.G. Gulyamov, M.U. Xajiev, X.N Juraev
Influence Of The Temperature To The Growth Of Thin Film Sno2, A.G. Gulyamov, M.U. Xajiev, X.N Juraev
Bulletin of Gulistan State University
The SnO2 thin films on glass substrate grown by methods of chemical vapor deposition (CVD) in conditions of quasiclosed volume by using a separate evaporator to obtain a saturated are investigated. It is suggested that under these conditions the germ growth occurs by diffusion coalescence. In the IR absorption spectra of SnO2 films, an absorption band in the range of 2500-3800 cm-1 is detected, the amplitude of which is correlated with the conductivity of the grown films.
Opposite Motion In Ideal Fluid Of Two Elongated Ellipsoids Of Rotation, A. Khakimov, Z.T. Ismoilova, S.X. Islikov
Opposite Motion In Ideal Fluid Of Two Elongated Ellipsoids Of Rotation, A. Khakimov, Z.T. Ismoilova, S.X. Islikov
Bulletin of Gulistan State University
Oncoming movement in an ideal fluid of two elongated and ellipsoid of rotation. Solving the problem motion of two elongated ellipsoids of an infinite fluid in sentences, and what is a disturbed fluid flow potential.
About The Problem Dividing Angle On Three Equal Parts And Properties Of Trisectris, S.Zh. Zhuramuratov, D.A. Ayupova
About The Problem Dividing Angle On Three Equal Parts And Properties Of Trisectris, S.Zh. Zhuramuratov, D.A. Ayupova
Bulletin of Gulistan State University
This work contains the history and solutions of the famous problems of antiquity, which played an important role in the development of mathematics. The presentation is accompanied by interesting information about the development and methods of mathematics. The work is focused on a beginning mathematician-student of the first year and a student of the upper secondary school.
Effectiveness Analysis Of Generalization Of Algorithms For Increasing Information Reliability Based On Usage Of Information Redundancy Of Electronic Documents, I.I. Jumanov, Kh.B. Karshiyev
Effectiveness Analysis Of Generalization Of Algorithms For Increasing Information Reliability Based On Usage Of Information Redundancy Of Electronic Documents, I.I. Jumanov, Kh.B. Karshiyev
Scientific Journal of Samarkand University
Approaches are proposed to use natural redundancy to increase the reliability of information in the form of logical, semantic, technological, statistical relationships, properties and relations of elements and key concepts of the document. The developed methods and algorithms are based on the mechanisms of refinement, adjustment and control of the values of elements, features, attributes, concepts of the document. Implemented a modified associative semantic network of image search - a document by segmentation in the form of its fragments and components.
Swelling Kinetics Of Cationite Ku-2x4 In Solutions Of Different Concentrations Of Hydrochloric Acid, Kh.T. Trobov, N.B. Ferapontov, M.G. Tokmachov, G.Kh. Tursunova
Swelling Kinetics Of Cationite Ku-2x4 In Solutions Of Different Concentrations Of Hydrochloric Acid, Kh.T. Trobov, N.B. Ferapontov, M.G. Tokmachov, G.Kh. Tursunova
Scientific Journal of Samarkand University
From the position of the heterophase model of the structure of polymer gels, the kinetics of swelling of the cation exchanger KU-2x4 in HCl solutions of different concentrations was investigated. It is proved that the swelling proceeds according to the kinetic equations of the first-order reaction.