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Articles 58441 - 58470 of 198044
Full-Text Articles in Engineering
About Fastening Cargo On The Wagon Under The Influence Of Transverse Forces, Yadgor Ozodovich Ruzmetov, Jamol Shihnazarov
About Fastening Cargo On The Wagon Under The Influence Of Transverse Forces, Yadgor Ozodovich Ruzmetov, Jamol Shihnazarov
Journal of Tashkent Institute of Railway Engineers
The content of the article is devoted to the incorrectness of the existing methodology for calculating freight fastening. Based on the conducted research, the article proved that the strength of freight fasteners subjected to transverse forces is not provided. The existing methodology for calculating freight fastenings, firstly, does not take into account the force of preliminary twists of the fastening wire, which increase the adhesion force of the freight to the car floor, and secondly, it does not take into account freight shifts that occur during transportation. The force in all wire fasteners subjected to transverse forces, depending on the …
Systematization Of Factors Influencing During Processing Of Wagons At The Sorting Station, Dilmurod Baхodirovich Butunov, Nodir Kodirovich Aripov, Alfiya Mirkhatimovna Bashirova
Systematization Of Factors Influencing During Processing Of Wagons At The Sorting Station, Dilmurod Baхodirovich Butunov, Nodir Kodirovich Aripov, Alfiya Mirkhatimovna Bashirova
Journal of Tashkent Institute of Railway Engineers
This article discusses the issues of systematization of factors affecting the main quality indicator of the operation of the sorting station. The methods of system and factor analysis and statistical data processing are used. The structure of the elements for the transit wagon transit time with processing at the sorting station has been developed. Systematized factors affecting the processing of wagons at the sorting station according to the elements of the time spent in transit wagon.
Evaluation Of The Efficiency Of Diesel Locomotives On The Section Of Marokand - Kattakurgan Of Uzbek Railway, Oleg Sergeyevich Ablyalimov, Jasur Djura Ug'li Khodjiyev
Evaluation Of The Efficiency Of Diesel Locomotives On The Section Of Marokand - Kattakurgan Of Uzbek Railway, Oleg Sergeyevich Ablyalimov, Jasur Djura Ug'li Khodjiyev
Journal of Tashkent Institute of Railway Engineers
A comparative analysis of the efficiency of using diesel traction locomotives in the Marokand - Kattakurgan section of the Uzbek Railway for freight trains with and without stops at intermediate stations, siding and separate points is given. Mathematical models of conducting freight trains by diesel-powered locomotives were developed, specific resultant forces of the train were calculated and built in the modes of traction, idling and braking, curves of the speed of movement and time of the train on the considered real railway section. The kinematic parameters of the movement of freight trains and the main energy indicators of the transportation …
Improvement Of Technological Standards Spent On Local Cars During Cargo Delivery, Jamshid Renatovich Kobulov, Jamshid Sayfullayevich Barotov
Improvement Of Technological Standards Spent On Local Cars During Cargo Delivery, Jamshid Renatovich Kobulov, Jamshid Sayfullayevich Barotov
Journal of Tashkent Institute of Railway Engineers
The article analyzes the norms of time that affect the movement of cars in case of violation of the terms of delivery of goods when sending cars from the station. When delivering goods from the shipper to the station track from the shipper to the shipper, a sequence was developed to find the total amount of time for performing operations on their Assembly from the station, as well as the total amount of time spent on technological operations before transferring the cars to the cargo owners at the designated station. After the arrival of local cars at the unloading station, …
Syntactic Analysis And Discussion Of Data On Carriage Of Railway For Storage In The Database Management System, Muzaffar Siddikovich Rasulov, Orifjon Alimovich Mirsagdiyev
Syntactic Analysis And Discussion Of Data On Carriage Of Railway For Storage In The Database Management System, Muzaffar Siddikovich Rasulov, Orifjon Alimovich Mirsagdiyev
Journal of Tashkent Institute of Railway Engineers
The paper analyzes the current state of obtaining information at a certain point in time of the carriage model of the road, and processing incoming data. According to the research results, the time of receipt of primary information from the information and computer center of the society and data processing was determined, both by the traditional method and by the method using information and communication technologies. And also, comparisons of the results are made. An algorithm for obtaining and processing information in real time has been developed. Practical recommendations on building a service for integration with an automated system for …
On The Development Of Mathematical Models Describing The Relationship Between The Parameters Of The Container Depot And Operation Technology, Daurenbek Ixtiyarovich Ilesaliev, Shaxboz Rovshan Ugli Abduvakhitov, Farrukh Kakhramonovich Azimov, Gulshanа Rasulovna Ibragimova
On The Development Of Mathematical Models Describing The Relationship Between The Parameters Of The Container Depot And Operation Technology, Daurenbek Ixtiyarovich Ilesaliev, Shaxboz Rovshan Ugli Abduvakhitov, Farrukh Kakhramonovich Azimov, Gulshanа Rasulovna Ibragimova
Journal of Tashkent Institute of Railway Engineers
Today, due to the increase in rail freight traffic, there is a shortage of containers, and the issue of shortage of containers has not been resolved for a long time. This substantiates the practical relevance of the study of container depots in railway transport. Connections with which the purpose of the article is to develop a methodology for the reliable determination of the most rational values of the parameters of the container terminal, thereby improving and increasing the level of customer service in transport in general.
Study Of The Influence Of An Alternating Magnetic Field On The Operation Of A Current Converter On The Magnetomodulation Effect, Abdurauf Malikovich Safarov, Sarvarbek Khamrayevich Jumaboyev
Study Of The Influence Of An Alternating Magnetic Field On The Operation Of A Current Converter On The Magnetomodulation Effect, Abdurauf Malikovich Safarov, Sarvarbek Khamrayevich Jumaboyev
Journal of Tashkent Institute of Railway Engineers
The paper proposes a design of a device for converting current to voltage with advanced functionality, designed to detect the asymmetry of three-phase currents in both DC and Made AC circuits. theoretical investigations and mathematical model of static characteristics of the Converter from changes in the magnetization curve of the magnetic material under the interaction of two fields generated by modulating current flowing in the modulation coil and an alternating magnetic field with a strength and created during the flow of DC buses DC field strength and shown that the nonlinearity of the dependence really is a principal factor responsible …
Dynamic Characteristics Of The New Magnetic Modulating Dc Difference Converter, Sultan Fayzullayevich Amirov, Sarvarbek Xamrayevich Jumaboyev, Nurilla Raxmatullaevich Yuldashev
Dynamic Characteristics Of The New Magnetic Modulating Dc Difference Converter, Sultan Fayzullayevich Amirov, Sarvarbek Xamrayevich Jumaboyev, Nurilla Raxmatullaevich Yuldashev
Journal of Tashkent Institute of Railway Engineers
It is shown that when a jump-like differential current is applied to the input of the transducer, its transient response consists of the sum of one steady-state and two free harmonic components with a frequency equal to double the modulation current frequency, the free components of which decay with rates depending on the time constants, respectively, the measuring and modulation magnetic circuit, and when a pulsating differential current with a frequency is applied to the input of the converter, the transient response consists of the sum of one harmonic steady-state component with a frequency equal to the modulation current frequency …
The Research Of Various Transient Processes In Current Transformers, Sultan Fayzullayevich Amirov, Shavkat Mukhsimov, Otabek Tashmuhammatovich Boltayev
The Research Of Various Transient Processes In Current Transformers, Sultan Fayzullayevich Amirov, Shavkat Mukhsimov, Otabek Tashmuhammatovich Boltayev
Journal of Tashkent Institute of Railway Engineers
In the article the transients occurring in current transformers are investigated and the values of secondary transient currents are determined using the operator's method with the help of a mathematical model of a wide-range current transformer using various primary sources. Using the obtained results, the regularities of secondary currents change over time are analyzed. It determined that, in the developed the wide-range current transformer, the influence of the aperiodic component of the primary current on the transformer current decreases with increasing the angle and creating a counter magnetomotive force in the core to expand the upper limit of the conversion …
The Features Of The Power Scheme Of The New Electric Locomotive 3es5К (Ermak) Of The Park Of Uzbekistan, D.O. Radjibaev
The Features Of The Power Scheme Of The New Electric Locomotive 3es5К (Ermak) Of The Park Of Uzbekistan, D.O. Radjibaev
Journal of Tashkent Institute of Railway Engineers
The paper analyzes the characteristics and features of the traction chain of the 3ES5K electric locomotive. The design features of the electric locomotive are noted. A comparative analysis of traction and energy indicators with an electric locomotive of the VL80s series is carried out. Based on the results of the analysis, the indicators of energy consumption and running time on the existing section of Angren-Pap with the same mass of the train were derived
Structural Scheme Of A Formalized Model Of The Process Of Accounting And Control Of Automation And Telemechanics Devices, D.Kh. Baratov, Nazirjhon Mukarramovich Aripov
Structural Scheme Of A Formalized Model Of The Process Of Accounting And Control Of Automation And Telemechanics Devices, D.Kh. Baratov, Nazirjhon Mukarramovich Aripov
Journal of Tashkent Institute of Railway Engineers
The article deals with the issues of functional support for the automated system of accounting and control of railway automation and telemechanics devices: signaling, centralization and blocking; presents the components of the electronic Executive part of the system; offers a conceptual model and describes the design features of the developed automated system.
To The Question Of Organization Of Client Radio Communications On Railway Transport, Natalya Valerevna Yaronova, Aliye Ayderovna Ametova
To The Question Of Organization Of Client Radio Communications On Railway Transport, Natalya Valerevna Yaronova, Aliye Ayderovna Ametova
Journal of Tashkent Institute of Railway Engineers
The article presents a way of organizing client radio communications using the high-speed «Afrosiyob» train as an example. The provision of additional services to train passengers is an essential condition for increasing the status of railway transport and its efficiency. It consists in organizing passenger access to the Internet and to multimedia services along the train
Determination Of Technical Condition Of Passenger Locomotives Using Diagnostic Equipment, M.Sh. Valiyev, X.R. Qosimov
Determination Of Technical Condition Of Passenger Locomotives Using Diagnostic Equipment, M.Sh. Valiyev, X.R. Qosimov
Journal of Tashkent Institute of Railway Engineers
The account of a real technical condition of the equipment of the locomotive at planning of volumes of its repair is one of the major reserves of reduction of working costs of railways and decrease in the cost price of transportations. The continuous control of a technical condition of the locomotive in operation is carried out with use of stationary and onboard means of technical diagnostics. In article the technique of an integrated estimation of a technical condition of quality of working process in the cylinder of a diesel engine with use of onboard diagnostic aids is offered.
Malfunction Analysis In The Freight Cars Used In Uzbekistan And Measures For Their Elimination, Nodir Botirovich Adilov
Malfunction Analysis In The Freight Cars Used In Uzbekistan And Measures For Their Elimination, Nodir Botirovich Adilov
Journal of Tashkent Institute of Railway Engineers
This article uses the analysis of malfunctions of the load-carrying apparatus of freight car structures used in Uzbekistan. The reasons for the occurrence of malfunctions in the load car structures are studied. It seems that in order to determine the technical condition of the device, it is possible to increase the reliability of the stored device by making the correct conclusion from the fault signs derived from the design parameters using information received from the controlled stands.
To Improve The Coupon System For Monitoring Compliance With Labor Safety At The Enterprises Of Jsc "Uzbekistan Temir Yullari», Sunnatulla Sulaymanov, Miraziz Mirkadirovich Talipov, Аbdigofur Dustov
To Improve The Coupon System For Monitoring Compliance With Labor Safety At The Enterprises Of Jsc "Uzbekistan Temir Yullari», Sunnatulla Sulaymanov, Miraziz Mirkadirovich Talipov, Аbdigofur Dustov
Journal of Tashkent Institute of Railway Engineers
The article discusses the issues of improving the coupon system for monitoring compliance with labor safety by establishing the level of labor protection at work and ranking the violations committed by departments and the enterprise as a whole. A modernized structure of the labor protection management system has been developed and a coupon control system has been proposed, integrated with three-level monitoring of the conditions and labor protection, which takes into account the magnitude of the coefficient of labor protection.
To The Prevention Of Fires Related To Accidents Of Municipal-Energy Networks Of The Destroyed Part Of The City, Sunnatulla Sulaymanov, Khasan Mirzakhitovich Kamilov, Miraziz Mirkadirovich Talipov
To The Prevention Of Fires Related To Accidents Of Municipal-Energy Networks Of The Destroyed Part Of The City, Sunnatulla Sulaymanov, Khasan Mirzakhitovich Kamilov, Miraziz Mirkadirovich Talipov
Journal of Tashkent Institute of Railway Engineers
This article presents the results of a theoretical study of the quantitative indicators of fires in the devastated part of the city during devastating earthquakes and a device for preventing fires by shutting off the power supply of residential buildings.
About The Influence Of The Structural-Phase State On The Functional Properties Of Titanium Nickelide, N.U. Abduraimova, Yu.N. Mansurov
About The Influence Of The Structural-Phase State On The Functional Properties Of Titanium Nickelide, N.U. Abduraimova, Yu.N. Mansurov
Journal of Tashkent Institute of Railway Engineers
For inducing form memory effects of FMEs, at least one deformation of the alloy is required. Traditionally, it is carried out at room temperature or in liquid nitrogen. The influence of the initial phase composition on different schemes of FME and OEPF guidance has been studied. The evolution of reversible and complete reversible deformation, depending on the induced deformation, has an extreme character, while the position of the maximum depends on the structural state: for an equiatomic alloy Ti-50.0 at.% Ni - range εt = 1215%; for Ti-50.7 at.% Ni.
Increasing The Strength Of Worn Parts Withcomposite Materials, Masud Numonzhonovich Masharipov, Shuhratbek Xabibullo Ogli Yuldashev
Increasing The Strength Of Worn Parts Withcomposite Materials, Masud Numonzhonovich Masharipov, Shuhratbek Xabibullo Ogli Yuldashev
Journal of Tashkent Institute of Railway Engineers
Researches are carried out on the built-up curly details. The aim of the study is to restore worn surfaces of parts by surfacing of powder composite materials. Inves-tigations are carried out to determine the composition, structure, hardness and wear resistance of the deposited layers. As a result of laboratory studies, the opti-mal composition of the surfacing material and the rational method of applying them to the worn surfaces of machine parts are selected.
Application Of Fiber Optical Sensors For The Account Of Axes Of The Mobile Composition Of Automatic And Telemechanical Systems On Railway Transport, Aziz Azimovich Saitov
Application Of Fiber Optical Sensors For The Account Of Axes Of The Mobile Composition Of Automatic And Telemechanical Systems On Railway Transport, Aziz Azimovich Saitov
Journal of Tashkent Institute of Railway Engineers
In this scientific work, modern optical sensors based on the use of modern electronic electromagnetic relay counters used on railways, stages and stations in the Republic of Uzbekistan are investigated and presented. The electromagnetic relay device ESSO increases the transmission of false messages under the influence of magnetic induc-tion. This leads to a decrease in the level of reliability. The study showed that the recommended axle counting sensors have high sensitivity when passing wheels on sensors on hauls and stations, which can increase reliability and reduce operating costs for train movements, trunk and station roads.
Application Of The Volterra Tray Model In Solving The Problems Of Optimizing The Supply Of Grain Elevators By Wagons, Nazirjhon Mukarramovich Aripov, Daurenbek Ixtiyarovich Ilesaliev
Application Of The Volterra Tray Model In Solving The Problems Of Optimizing The Supply Of Grain Elevators By Wagons, Nazirjhon Mukarramovich Aripov, Daurenbek Ixtiyarovich Ilesaliev
Journal of Tashkent Institute of Railway Engineers
Ensuring uniform supply of wagons for loading and unloading of goods is one of the main tasks of the transport process. Existing methods for solving the issues of ensuring the rhythmicity of the supply of wagons for loading grain often do not allow us to identify the causes of the technological shortage of wagons. In this regard, in the framework of this work, the aim of the study is to increase the efficiency of the organization of providing grain elevators with wagons using models.
Analysis Of Malfunctions Of Brake Equipment Of Freight Cars On The Angren-Pap Line, Yadgor Ozodovich Ruzmetov, Sardor Gafurjanovich Inagamov
Analysis Of Malfunctions Of Brake Equipment Of Freight Cars On The Angren-Pap Line, Yadgor Ozodovich Ruzmetov, Sardor Gafurjanovich Inagamov
Journal of Tashkent Institute of Railway Engineers
The article analyzes the failures of the braking equipment of freight cars operated on the Angren – Pap section of the “Uzbekistan temir yullari” railway. The electrified Angren – Pap railway line was built in order to create a new China-Central Asia-Europe railway corridor, as well as to form a unified railway network in Uzbekistan. It is an important link not only for Railways, but also for the entire economy of the Republic of Uzbekistan. One of the problems of exploitation that arise in the friction node of car part brake pads is high brake pad wear and temperature rise …
Improvement Of The Cooling System During Storage In The Process Of Agricultural Products, Jamshid Renatovich Kobulov, Jamshid Sayfullayevich Barotov, Diyor Shomurotovich Boboyev
Improvement Of The Cooling System During Storage In The Process Of Agricultural Products, Jamshid Renatovich Kobulov, Jamshid Sayfullayevich Barotov, Diyor Shomurotovich Boboyev
Journal of Tashkent Institute of Railway Engineers
The article outlines the optimal options for quality storage and product placement, from the acceptance of agricultural products to the delivery process. The factors that lead to natural losses and decomposition during cargo storage are identified and eliminated. In addition, the process of storing and delivering products is analyzed and proposals for addressing deficiencies in the existing logistics network are developed.
How Students View The Role Of Faculty Advisors In The Swe Organization, Diane Peters, Maryam Darbeheshti, Gloria Guohua Ma, Karinna M. Vernaza, Alexa N. Rihana Abdallah, Christina Remucal, Stephanie G. Wettstein
How Students View The Role Of Faculty Advisors In The Swe Organization, Diane Peters, Maryam Darbeheshti, Gloria Guohua Ma, Karinna M. Vernaza, Alexa N. Rihana Abdallah, Christina Remucal, Stephanie G. Wettstein
Mechanical Engineering Presentations And Conference Materials
The Society of Women Engineers (SWE) collegiate sections attract many men and women to the society, and they can be among the largest and most active student organizations on the university campuses. A key factor to boost membership is the active involvement of faculty advisors, who serve as the liaison between SWE collegiate sections, the university, the National SWE organization, and professional SWE members. A group of SWE faculty advisors previously conducted a survey of faculty advisors and counselors, with advisors and counselors aggregated in the results, to determine what aspects of their role they consider most significant, and how …
Investigating The Experiences Of Military Professionals Who Return To Engineering Graduate School, Diane Peters, Elizabeth Gross
Investigating The Experiences Of Military Professionals Who Return To Engineering Graduate School, Diane Peters, Elizabeth Gross
Mechanical Engineering Presentations And Conference Materials
Those graduate students known as returners, who have a gap of at least five years between their undergraduate degree conferral and their return to school for a graduate degree, have a wide variety of different experiences. While many of them spend those gap years in employment at an industrial employer, some of them serve in the military in various capacities. As military experience is different from working at an industrial employer, one might expect that these returners will be different in their outlook, skills, or approach to learning. In this study, the differences between military returners and returners from industry …
Professional Women Identify Their Professional And Personal Needs, Diane Peters, Anne M. Lucietto, Liza Ann Russell, Meher Rusi Taleyarkhan
Professional Women Identify Their Professional And Personal Needs, Diane Peters, Anne M. Lucietto, Liza Ann Russell, Meher Rusi Taleyarkhan
Mechanical Engineering Presentations And Conference Materials
Professional women in various fields often express issues they encounter in being able to access quality materials to support professional and personal needs, as well as work-life balance. By studying a variety of modes through which these materials are generally obtained, including conference participation, informal communication via social media, and utilization of networking opportunities, several gaps were identified in available support for professionals. Professionals from various backgrounds were also surveyed in order to better identify their needs in terms of career development. Distributed through a variety of social networks including Facebook, Twitter, and LinkedIn, as well as the Indiana Secretary …
Geometric Optimization Of Plasmonic Nanostructure Arrays On Mwir Hgcdte (Mct), Nagendrababu Vanamala, Kevin C. Santiago, Naresh C. Das, Samuel Keith Hargrove
Geometric Optimization Of Plasmonic Nanostructure Arrays On Mwir Hgcdte (Mct), Nagendrababu Vanamala, Kevin C. Santiago, Naresh C. Das, Samuel Keith Hargrove
Mechanical and Manufacturing Engineering Faculty Research
Mercury Cadmium Telluride (MCT) is a primary absorber material used in most infrared (IR) detection technologies. Our previous studies show that the optical absorbance profile of MCT in the mid-infrared region can be enhanced by 13% under ambient conditions via integrating periodic Indium Tin Oxide (ITO) nanostructures. Here, we focus on the geometrical parameterization and optimization of ITO nanostructure arrays. We simulate several types of geometries, their corresponding effective absorption profiles, E-field distribution, and optimal geometric parameters. This work may lead to improved light collection and absorption edge engineering, as MCT continues to be the material of choice in IR …
Simulation Of Cu Precipitation In Fe-Cu Dilute Alloys With Cluster Mobility, Senlin Cui, Mahmood Mamivand, Dane Morgan
Simulation Of Cu Precipitation In Fe-Cu Dilute Alloys With Cluster Mobility, Senlin Cui, Mahmood Mamivand, Dane Morgan
Mechanical and Biomedical Engineering Faculty Publications and Presentations
Cu-rich precipitates formation is associated with the precipitation hardening of Fe-Cu based steels and the embrittlement of reactor pressure vessel steels under neutron irradiation. The accurate modeling of the time evolution of Cu-rich precipitates is therefore of fundamental importance for the design of Fe-Cu based steels and the prediction of the irradiation induced shift of the ductile to brittle transition temperature of reactor pressure vessels. This work applies cluster dynamics with mobile Cu monomers and clusters to model Cu precipitation in dilute Fe-Cu alloys at several temperatures. Optimized model parameters can be used to simulate the mean radius, number density, …
How To Train A-To-B And B-To-A Neural Networks So That The Resulting Transformations Are (Almost) Exact Inverses, Paravee Maneejuk, Torben Peters, Claus Brenner, Vladik Kreinovich
How To Train A-To-B And B-To-A Neural Networks So That The Resulting Transformations Are (Almost) Exact Inverses, Paravee Maneejuk, Torben Peters, Claus Brenner, Vladik Kreinovich
Departmental Technical Reports (CS)
In many practical situations, there exist several representations, each of which is convenient for some operations, and many data processing algorithms involve transforming back and forth between these representations. Many such transformations are computationally time-consuming when performed exactly. So, taking into account that input data is usually only 1-10% accurate anyway, it makes sense to replace time-consuming exact transformations with faster approximate ones. One of the natural ways to get a fast-computing approximation to a transformation is to train the corresponding neural network. The problem is that if we train A-to-B and B-to-A networks separately, the resulting approximate transformations are …
Research Of Vibration Control On Nonlinear Rotor System With Fuzzy-Pid, Liu Jun, Zhenwang Liu, Jianen Chen, Liangfu Wang
Research Of Vibration Control On Nonlinear Rotor System With Fuzzy-Pid, Liu Jun, Zhenwang Liu, Jianen Chen, Liangfu Wang
Journal of System Simulation
Abstract: In order to overcome the problems which are the model of the nonlinear restoring force and the nonlinear vibration control, the vibration control of the nonlinear rotor system and the processing the nonlinear restoring force were accomplished based on the electromagnetic actuator using the FUZZY-PID controller with the fitness function of the variable width and variable geometric shapes. Using the Jeffcott rotor model with the nonlinearities of the forces of the bearing and the electromagnetic actuator, the simulations of the vibration control on the rotor system were performed. Through comparing with the control methods of the traditional PID and …
Simulation And Evaluation Of Facility Layout In Environment With Complexity For Manufacturing System, Ailin Yu, Qingxin Chen, Mao Ning
Simulation And Evaluation Of Facility Layout In Environment With Complexity For Manufacturing System, Ailin Yu, Qingxin Chen, Mao Ning
Journal of System Simulation
Abstract: To research the performance for manufacturing system of equipment with different layout of facility, a method of simulation and evaluation in the environment with complexity of manufacturing system was proposed. Three kinds of typical layout of facility were concluded and abstract by the enterprise facts. The evaluation system was established in the environment with complexity of manufacturing system. The construction method of the entropy models were described emphatically. Simulation models were developed based on the production and process model. The layouts were analyzed and evaluated by the data of the evaluation system from simulation experiments.