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2020

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Articles 811 - 840 of 1829

Full-Text Articles in Civil and Environmental Engineering

Climate Change Impacts The Subsurface Transport Of Atrazine And Estrone Originating From Agricultural Production Activities, Renys Enrique Barrios, Simin Akbariyeh, Chuyang Liu, Khalid Muzamil Gani, Margarita T. Kovalchuk, Xu Li, Yusong Li, Daniel D. Snow, Zhenghong Tang, John Gates, Shannon L. Bartelt-Hunt Jun 2020

Climate Change Impacts The Subsurface Transport Of Atrazine And Estrone Originating From Agricultural Production Activities, Renys Enrique Barrios, Simin Akbariyeh, Chuyang Liu, Khalid Muzamil Gani, Margarita T. Kovalchuk, Xu Li, Yusong Li, Daniel D. Snow, Zhenghong Tang, John Gates, Shannon L. Bartelt-Hunt

Nebraska Water Center: Faculty Publications

Climate change will impact soil properties such as soil moisture, organic carbon and temperature and changes in these properties will influence the sorption, biodegradation and leaching of trace organic contaminants to groundwater. In this study, we conducted a modeling case study to evaluate atrazine and estrone transport in the subsurface under current and future climate conditions at a field site in central Nebraska. According to the modeling results, in the future, enhanced evapotranspiration and increased average air temperature may cause drier soil conditions, which consequently reduces the biodegradation of atrazine and estrone in the water phase. On the other hand, …

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Mobile Manipulating Drones, Paul Oh Jun 2020

Mobile Manipulating Drones, Paul Oh

INSPIRE Archived Webinars

In the past few years, robotic limbs have been attached to rotorcraft drones to perform aerial manipulation. Unlike simple object pick-and-place, such mobile-manipulating drones are dexterous to perform tasks like valve-turning, hatch-opening, and tool-handling. This is a paradigm shift where such drones actively interact with their environment rather than just passively surveil. Aerial manipulation is challenging because such interaction yields reaction forces and torques that destabilize the drone. This talk will provide an overview of aerial manipulation and showcase examples that could serve in infrastructure inspection, maintenance, and repair.

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Constitutive Model Of Lateral Unloading Creep Of Soft Soil Under Excess Pore Water Pressure, Wei Huang, Kejun Wen, Xiaojia Deng, Junjie Li, Zhijian Jiang, Yang Li, Lin Li, Farshad Amini Jun 2020

Constitutive Model Of Lateral Unloading Creep Of Soft Soil Under Excess Pore Water Pressure, Wei Huang, Kejun Wen, Xiaojia Deng, Junjie Li, Zhijian Jiang, Yang Li, Lin Li, Farshad Amini

Civil and Architectural Engineering Faculty Research

Presented in this paper is a study on the lateral unloading creep tests under different excess pore water pressures. The marine sedimentary soft soil in Shenzhen, China, was selected in this study. The results show that the excess pore water pressure plays a significant role in enhancing the unloading creep of soft soil. Higher excess pore water pressure brings more obvious creep deformation of soft soil and lower ultimate failure load. Meanwhile, the viscoelastic and the viscoplastic modulus of soft soil were found to exponentially decline with creep time. A modified merchant model and a combined model of the modified …

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Retention Of Swine Slurry Constituents In Soil And Crop Residue As Affected By Setback Distance, John E. Gilley, Shannon L. Bartelt-Hunt, Kent M. Eskridge, Xu Li, Amy M. Schmidt, Daniel D. Snow Jun 2020

Retention Of Swine Slurry Constituents In Soil And Crop Residue As Affected By Setback Distance, John E. Gilley, Shannon L. Bartelt-Hunt, Kent M. Eskridge, Xu Li, Amy M. Schmidt, Daniel D. Snow

Department of Agricultural and Biological Systems Engineering: Faculty Publications

Setbacks are prescribed distances from surface waters within which manure application is not allowed. Little information is available concerning the retention of swine slurry constituents in soil and crop residue materials within setback areas. This study was conducted to measure the retention of selected constituents within a setback area following the upslope application of swine slurry and the introduction of simulated rainfall. The no-till cropland site had a slope gradient of 4.9% and a mean winter wheat residue cover of 7.73 Mg ha−1 . Soil and vegetative samples were collected on 3.7 m wide by 23.2 m long plots with …

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Exploratory Analysis Of Recent Trends In School Travel Mode Choices In The U.S., Abhay Lidbe, Xiaobing Li, Emmanuel Kofi Adanu, Shashi Nambisan, Steven Jones Jun 2020

Exploratory Analysis Of Recent Trends In School Travel Mode Choices In The U.S., Abhay Lidbe, Xiaobing Li, Emmanuel Kofi Adanu, Shashi Nambisan, Steven Jones

Civil and Environmental Engineering and Construction Faculty Research

The study explores the recent trends in school travel using the 2017 National Household Travel Survey data. The study also investigates the exogenous factors affecting the school travel mode choice using random parameters multinomial logit (RPMNL) model. The results indicate that urban school trips range between 3 and 5 miles, whereas, average rural trips are longer than 6 miles. School commute times are higher among lower-income households. Further, the share of school bus and auto has declined while that of walking and biking has increased in 2017. This change is significant among high school students. Like other studies, the findings …

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Nappe Oscillations On Free-Overfall Structures, Data From Laboratory Experiments, Maurine Lodomez, Blake Tullis, Pierre Archambeau, Vasileios Kitsikoudis, Michel Pirotton, Benjamin Dewals, Sébastien Erpicum Jun 2020

Nappe Oscillations On Free-Overfall Structures, Data From Laboratory Experiments, Maurine Lodomez, Blake Tullis, Pierre Archambeau, Vasileios Kitsikoudis, Michel Pirotton, Benjamin Dewals, Sébastien Erpicum

Publications

This paper presents a dataset obtained from fifty-two laboratory experiments of nappe oscillations on free overfall structures. Data were collected on two complementary experimental setups, each consisting of a linear weir model. The dataset covers test configurations involving varied geometric parameters (i.e. weir crest shape, weir width, fall height and nappe confinement) and inflow discharges. The following experimental data were produced: assessment of nappe oscillation occurrence and associated frequencies. The later measurements were performed using characterization techniques (image and sound analysis) developed for this research. Reuse of the collected data will support efforts to improve the understanding of the physical …

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Nonlinear Breaking-Wave Characteristics In Lagrangian Coordinates, Wen-Jer Tseng, Chia-Yan Cheng Jun 2020

Nonlinear Breaking-Wave Characteristics In Lagrangian Coordinates, Wen-Jer Tseng, Chia-Yan Cheng

Journal of Marine Science and Technology–Taiwan

This paper presents a theoretical investigation of nonlinear surface-wave propagation over a sloping bottom. For a problem with nonlinear surface-wave propagation over a sloping bottom, a perturbation method is first used to find the analytical solution in order to derive the third order terms for the bottom slope  and the wave steepness  in the Eulerian system. Then, by transforming the flow field solution from the Eulerian system into the Lagrangian system, a more accurate wave profile is identified. By using the kinematic stability parameter, new theoretical breaking-wave characteristics are derived. The theoretical solutions are then compared with those …

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Assessment Of Dynamic Response Of Offshore Jacket Platforms Subjects To Random Waves, Xiaoshuang Han, Weiliang Qiao, Bo Zhou Jun 2020

Assessment Of Dynamic Response Of Offshore Jacket Platforms Subjects To Random Waves, Xiaoshuang Han, Weiliang Qiao, Bo Zhou

Journal of Marine Science and Technology–Taiwan

This paper presents a simplified approach to analyze the dynamic response of offshore jacket platform based on Timoshenko beam theory. In the study, the jacket platform is simulated as a non-uniform cantilever beam structure subjects to random waves. The assessment of dynamic performance is based on the power spectral densities, variances and spectral moments due to wave spectrum. A combination of Pseudo-excitation and Ritz method is proposed and adopted, such as the dynamic characteristics of the jacket platform can be solved more efficiently without a need to examine the modes of vibration. The proposed analytical method also provides a more …

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Constraint-Type Fictitious Time Integration Method For Solving Non-Linear Multi-Dimensional Elliptic Partial Differential Equations, Yung-Wei Chen, Chein-Shan Liu, Yen-Shen Chang, Jiang-Ren Chang Jun 2020

Constraint-Type Fictitious Time Integration Method For Solving Non-Linear Multi-Dimensional Elliptic Partial Differential Equations, Yung-Wei Chen, Chein-Shan Liu, Yen-Shen Chang, Jiang-Ren Chang

Journal of Marine Science and Technology–Taiwan

In this paper, we propose a constraint-type fictitious time integration method (FTIM) for solving multi-dimensional non-linear elliptic-type partial differential equations. Based on the variable transformation of FTIM, the original governing equation is transformed into a new parabolic equation of an evolution type by introducing a space-time variable, and a new time integration direction is obtained. However, the space-time variable depends on the governing equation, boundary condition and fictitious time variable, especially due to the nonlinear effect. Previous studies have not discussed the definition of these nonlinear parameter problems, which may result in severe numerical instability and inaccuracy. To completely overcome …

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Numerical Analyses Of Pile Foundation For Support Structure Of Offshore Wind Turbine At Changhua Coast In Taiwan, Der-Guey Lin, Sheng-Hsien Wang, Jui-Ching Chou, Cheng-Yu Ku, Lien-Kwei Chien Jun 2020

Numerical Analyses Of Pile Foundation For Support Structure Of Offshore Wind Turbine At Changhua Coast In Taiwan, Der-Guey Lin, Sheng-Hsien Wang, Jui-Ching Chou, Cheng-Yu Ku, Lien-Kwei Chien

Journal of Marine Science and Technology–Taiwan

This study investigates the bearing capacities of group pile foundation (jacket foundation) installed on the seabed of offshore wind farm (OWF) at the Changhua coast of Western Taiwan for the jacket support structure of offshore wind turbine (OWT) using three-dimensional (3-D) finite element method (FEM). The jacket foundations are subjected to a combined Vertical-Horizontal-Moment (V-H-M) loading for the operational period. The responses of installed group pile foundations are investigated under the combined loading in marine silty sand-low plasticity silt & clay (SM-ML-CL) layers determined by 19 offshore boring logs. The validity of numerical procedures was verified by a large-scale lateral …

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Recent Shrinkage And Fragmentation Of Bluegrass Landscape In Kentucky, Bo Tao, Yanjun Yang, Jia Yang, S. Ray Smith, James F. Fox, Alex C. Ruane, Jinze Liu, Wei Ren Jun 2020

Recent Shrinkage And Fragmentation Of Bluegrass Landscape In Kentucky, Bo Tao, Yanjun Yang, Jia Yang, S. Ray Smith, James F. Fox, Alex C. Ruane, Jinze Liu, Wei Ren

Plant and Soil Sciences Faculty Publications

The Bluegrass Region is an area in north-central Kentucky with unique natural and cultural significance, which possesses some of the most fertile soils in the world. Over recent decades, land use and land cover changes have threatened the protection of the unique natural, scenic, and historic resources in this region. In this study, we applied a fragmentation model and a set of landscape metrics together with the satellite-derived USDA Cropland Data Layer to examine the shrinkage and fragmentation of grassland in the Bluegrass Region, Kentucky during 2008–2018. Our results showed that recent land use change across the Bluegrass Region is …

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Current State And Prospects Of Construction Of High-Speed Railway Overpasses In Seismic Conditions Of The Republic Of Uzbekistan, Ulugbek Zabixullayevich Shermuxamedov, Saidxon Salixanovich Salixanov Jun 2020

Current State And Prospects Of Construction Of High-Speed Railway Overpasses In Seismic Conditions Of The Republic Of Uzbekistan, Ulugbek Zabixullayevich Shermuxamedov, Saidxon Salixanovich Salixanov

Journal of Tashkent Institute of Railway Engineers

The article deals with the issues of seismic stability of high-speed railway overpasses in the Republic of Uzbekistan, taking into account the experience of their design and construction in developed foreign countries. A review of technical solutions to ensure the seismic stability of overpasses and bridges located on high-speed and high-speed Railways in the world and in the Republic of Uzbekistan. Features of ensuring seismic stability of bridges and overpasses on high-speed lines are given.

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Substantiation Of Technical And Economic Indicators Of Modern Technologies With The Current Maintenance Of The Subgrade Of Railways, Pardaboy Abduraximovich Begmatov, Sunnatulla Sulaymanov, Sherzod Amirkulovich Tadjibayev Jun 2020

Substantiation Of Technical And Economic Indicators Of Modern Technologies With The Current Maintenance Of The Subgrade Of Railways, Pardaboy Abduraximovich Begmatov, Sunnatulla Sulaymanov, Sherzod Amirkulovich Tadjibayev

Journal of Tashkent Institute of Railway Engineers

The article summarizes the results of a comparison of technical and economic indicators of existing technologies used to clean and destroy herbs and shrubs on the territory of the railway line. It was proved that the use of small means of mechanization in the performance of work included in the routing is effective.

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About The Influence Of A Zeolite Containing Filler (Natrolite) On The Properties Of Cement Binder, Anvar Ishanovich Adilkhodjayev, Ilkhom Abdullaevich Kadyrov, Kadyr Saparbaevich Umarov Jun 2020

About The Influence Of A Zeolite Containing Filler (Natrolite) On The Properties Of Cement Binder, Anvar Ishanovich Adilkhodjayev, Ilkhom Abdullaevich Kadyrov, Kadyr Saparbaevich Umarov

Journal of Tashkent Institute of Railway Engineers

The issue of the influence of the zeolite-containing filler of the Beltau field on the properties of cement binder is considered. Graphically presented are the experimental results of the effect of dispersion and degree of filling on the strength of cement stone. The data obtained confirm the advisability of using this type of filler in concrete.

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Research Of Running Resistance To Longitudinal Movement Of Rails On Jsc "Zbekiston Temir Yulari", Gali-Askar Khalfin Jun 2020

Research Of Running Resistance To Longitudinal Movement Of Rails On Jsc "Zbekiston Temir Yulari", Gali-Askar Khalfin

Journal of Tashkent Institute of Railway Engineers

This article presents the main design characteristics of a joint-less track, analyzes the linear resistance to longitudinal movements of rails, and also shows the design of a special measuring stand and measurement methods. The result of testing the Methodology the first stage will be obtained materials that are required for the preparation of new regulations on laying, maintenance and repair of seamless way, including with whips length block area and stage, as well as for the development of technological processes for the production of certain types of track work.

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Automation Of The Process Of Attaching Locomotives To Trains In Conditions Of A Non-Pairing Graphics, Marufdjan Xalikovich Rasulov, Makhamadaziz Makhamadaminovich Rasulmukhamedov, Shinpolat Mansuralievich Suyunbayev, Masud Numonzhonovich Masharipov Jun 2020

Automation Of The Process Of Attaching Locomotives To Trains In Conditions Of A Non-Pairing Graphics, Marufdjan Xalikovich Rasulov, Makhamadaziz Makhamadaminovich Rasulmukhamedov, Shinpolat Mansuralievich Suyunbayev, Masud Numonzhonovich Masharipov

Journal of Tashkent Institute of Railway Engineers

As you know, in the conditions of an unpaired train schedule at points of turnover and re-coupling of locomotives, it becomes necessary to determine candidates for dispatch or dispatch of locomotives in reserve. In this article, a technology has been developed to minimize the downtime of locomotives at points of turnover and re-coupling in conditions of their insufficiency or excess. In order to automate the process of identifying candidates for sending or sending locomotives, an algorithm has been created in reserve and a program for solving this problem on a computer has been developed. The developed computer program on the …

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About Fastening Cargo On The Wagon Under The Influence Of Transverse Forces, Yadgor Ozodovich Ruzmetov, Jamol Shihnazarov Jun 2020

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 …

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Systematization Of Factors Influencing During Processing Of Wagons At The Sorting Station, Dilmurod Baхodirovich Butunov, Nodir Kodirovich Aripov, Alfiya Mirkhatimovna Bashirova Jun 2020

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.

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Evaluation Of The Efficiency Of Diesel Locomotives On The Section Of Marokand - Kattakurgan Of Uzbek Railway, Oleg Sergeyevich Ablyalimov, Jasur Djura Ug'li Khodjiyev Jun 2020

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 …

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Improvement Of Technological Standards Spent On Local Cars During Cargo Delivery, Jamshid Renatovich Kobulov, Jamshid Sayfullayevich Barotov Jun 2020

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, …

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Syntactic Analysis And Discussion Of Data On Carriage Of Railway For Storage In The Database Management System, Muzaffar Siddikovich Rasulov, Orifjon Alimovich Mirsagdiyev Jun 2020

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 …

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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 Jun 2020

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.

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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 Jun 2020

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 …

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Dynamic Characteristics Of The New Magnetic Modulating Dc Difference Converter, Sultan Fayzullayevich Amirov, Sarvarbek Xamrayevich Jumaboyev, Nurilla Raxmatullaevich Yuldashev Jun 2020

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 …

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The Research Of Various Transient Processes In Current Transformers, Sultan Fayzullayevich Amirov, Shavkat Mukhsimov, Otabek Tashmuhammatovich Boltayev Jun 2020

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 …

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The Features Of The Power Scheme Of The New Electric Locomotive 3es5К (Ermak) Of The Park Of Uzbekistan, D.O. Radjibaev Jun 2020

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

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Structural Scheme Of A Formalized Model Of The Process Of Accounting And Control Of Automation And Telemechanics Devices, D.Kh. Baratov, Nazirjhon Mukarramovich Aripov Jun 2020

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.

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To The Question Of Organization Of Client Radio Communications On Railway Transport, Natalya Valerevna Yaronova, Aliye Ayderovna Ametova Jun 2020

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

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Determination Of Technical Condition Of Passenger Locomotives Using Diagnostic Equipment, M.Sh. Valiyev, X.R. Qosimov Jun 2020

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.

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Malfunction Analysis In The Freight Cars Used In Uzbekistan And Measures For Their Elimination, Nodir Botirovich Adilov Jun 2020

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.

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