Engineering Commons^™

Express Delivery By Rail Using Speed And High-Speed Trains, Sh.Sh. Kayumov

Journal of Tashkent Institute of Railway Engineers

Currently, fast delivery of documents, money and small parcels are in great demand in the country. Due to the slow speed of delivery and quality of service, fewer and fewer people trust the state mail. In the article, the author suggests using speed and high-speed trains for these purposes, which will enable users of Express Mail to save time and money

Development Of Economic And Mathematical Model Of Calculation Of Expenses At Processing Of Cars At Sorting Station, D.B. Butunov

Journal of Tashkent Institute of Railway Engineers

In this article the model is developed for calculation of the expenses connected with processing of cars on marshalling yard. Methods of economic-mathematical modeling are applied. It is formulated technique for definition of expenses when processing cars on marshalling yard. Expenses, the cars connected with processing on the example of classification yard service of "Ch" JSC UTY are calculated. Dynamics and structure of expenses by types of works on processing of cars at the station "Ch" is considered

Prospective Development Of The Railway Station Akhangaran-Tukimachi-Sirdarya, D.I. Ilesaliev, S.B. Sattorov

Journal of Tashkent Institute of Railway Engineers

The planned China-Kyrgyzstan-Uzbekistan railway line is designed to connect East Asia with the Middle East and Southern Europe. However, aging of fixed assets of railways significantly reduces reliability and their throughput in the conditions of a continuously growing volume of freight traffic. This problem is associated not only with the development of new or improvement of existing technical solutions, but also with technological solutions related to planning, organizing and managing traffic flows in the future. After the launch of the China-Kyrgyzstan-Uzbekistan railway line, the Tukimachi station will become a major railway junction at the crossroads of North-South and East-West transport …

Issues Of Regulation Of Train Locomotives Of The Railway Section Chukursay-Saryagash, M.N. Masharipov, Sh.M. Suyunbaev, M.M. Rasulmukhamedov

Journal of Tashkent Institute of Railway Engineers

The successive arrival of freight trains to the station performing border control of trains leads to a glut of adjacent sections by trains, mainly due to the employment of border guard brigades. Without the use of operational solutions in such conditions, the reserve of bandwidth is reduced and the need for locomotives is increased due to hot downtimes when the train station is not accepted for border control. This article has developed a methodology for regulating train locomotives, which allows to increase the useful work of train locomotives. The developed methodology will assist engineers and technicians in the connection of …

The Method Of Calculating The Middle Simple Locomotive And The Train Composition In The Turnover Point Based On The Modeling In The Conditions Of A Pair Traffic Of Trains, M.N. Masharipov

Journal of Tashkent Institute of Railway Engineers

The article developed a method for calculating the average downtime of a locomotive and the composition of a train at a turnaround point based on modeling in a pair train schedule. As a result of this, it is scientifically substantiated that strict adherence to the principle “trains do not expect a locomotive” will lead to a significant increase in the cost of locomotive hours at the point of turnover

Method Of Upgrading A Cargo Transport Units, Avaz Mirsultanovich Merganov

Journal of Tashkent Institute of Railway Engineers

The costs associated with handling and transport- warehousing operations reaching about half of the total costs of the transportation process. In this regard, it is necessary to study the issues of consolidation of cargo units, as this will increase productivity and minimize logistics costs. This article describes the search algorithm for the consolidation of cargo units. The study also provides mathematical models of the relationship between the parameters of a piece load, container and a standard pallet. The practical significance is to increase the utilization rate of the standard pallet, besides the proposed method will allow you to choose the …

Mathematical Model Of Determining The Optimal Period Of Technical Maintenance Of The Special Self-Propelled Rolling Stock, Z.G. Mukhamedova

Journal of Tashkent Institute of Railway Engineers

The article covers the mathematical model for determining the optimum periodicity of maintenance, separately for mechanical, electrical and hydraulic equipment for emergency recovery vehicles

A Study Of The Implementation Of Standards-Time Of Wagons At Sorting Station, D.B. Butunov

Journal of Tashkent Institute of Railway Engineers

The implementation of the established norms of the time spent by cars at the sorting station is investigated. The methods of statistical data processing and comparison of the time spent at the station with the established scheduled tasks were used. The structure of the time spent by transit cars with processing at the sorting station is analyzed. An element-by-element analysis of the time of transit cars with processing is carried out. The average daily savings and unproductive loss of time on the elements are determined. The costs of processing cars at the station, falling on each element of the time …

Geometric Formation Of Schemes Of Technical Objects In Automated Design Systems, M.A. Khadzhimuhametova

Journal of Tashkent Institute of Railway Engineers

This paper discusses the issues of mathematical support for the formation of various schemes of complex technical objects for a computer-aided design subsystem. Information is given on the description of the station diagram using finite element methods. On the one hand, it is required that the mathematical model be as universal as possible (cover all types of de-signed schemes), accurate, algorithmically reliable. On the other hand, it is required to ensure the minimum cost of the required memory of com-puter time. These contradictions are eliminated by creating a bank of models. Models are planned from separate modules of structural and …

Development Of Production Technology Of Foreign Resource-Saving Induction Motors, S.N. Kayumov

Journal of Tashkent Institute of Railway Engineers

In the paper of work on the topic "Of Ethnology construction and work of asynchronous engines", in the laboratory class, the control task, conclusions and annexes. In accordance with the curriculum in the discipline "Electric and basis electronics", the fundamentals of the theory of asynchronous squirrel-cage rotors are developed ethnologic. A training module is developed, and a method for performing laboratory work, innovations and foreign experience, in the same place, a brief description of the curriculum of the program, in the laboratory class, the control task, conclusions and annexes.

Efficient Frequency Control System Of Asynchronous Motor, U.T. Berdiyev, A. Norboyev

Journal of Tashkent Institute of Railway Engineers

This paper discusses efficient frequency control systems that are widely used in the motion of production mechanisms of asynchronous motors with short-circuited rotor. From these systems, the functional circuit of the scalar frequency control system was analyzed

Iron-Based Soft Magnetic Materials Used In Electrical Engineering, G.A. Govor, A.K. Vecher, U.T. Berdiyev, N.B. Pyrmatov

Journal of Tashkent Institute of Railway Engineers

This article discusses the characteristics and ways of obtaining soft magnetic materials on iron bases for manufacturing separate parts of magnetic cores of electrical machines. Soft magnetic materials shall have high initial and maximum magnetic permeability and low coercive force, and they shall have little loss of eddy current remagnetization, have a small hysteresis loop area and have relatively high electrical resistance. The production of electrical machine parts by powder metallurgy, compared to the magnetic metal products currently used, offers great advantages, reduced weight and size of parts, wider frequency range of materials operation, smaller vortex and magnetic losses and …

Plots Of Pojected Sorting Selection Hill’S The Uncertainty In The Formulas Of The Peak Constructive And Technological, Shuxrat Umarxodjayevich Saidivaliev

Journal of Tashkent Institute of Railway Engineers

In the article, on the basis of theorems on the change of kinetic energy for a non-free material point in the final form of theoretical mechanics, formulas for determining the braking path of the car in the braking zone of the sorting hill are derived. With a known value of the acceleration during the braking of the car the path of the car braking section can also be determined by the formula of the path of elementary physics. In the article on the basis of the theorem on the change of kinetic energy for a non-free material point in the …

Preventive Monitoring Railway Reinforced Concrete Bridges, I.G. Ganiev

Journal of Tashkent Institute of Railway Engineers

One of the main tasks of the railway industry of Uzbekistan, directly related to the development of the national economy, is the radical improvement of the condition of railways and structures on them. Therefore, the aim of this work is to develop practical preventive monitoring to increase the efficiency of the operational process. To achieve this goal, methods of scientific analysis, probability theory and stock theory, the principles of interaction, as well as experimental-static methods of compiling models were used. Using the developed preventive monitoring, it can be correctly organized preventive monitoring to ensure the required operational reliability of existing …

Electronic Data Capture And Study Management, William A. Mattingly

Division of Infectious Diseases

Electronic Data Capture (EDC) is the process of recording data from a primary data source into a computerized system for improved reliability, security, and convenience. Data stored in EDC systems are used for analysis and, in the case of clinical studies, are an important part of the development pipeline for new drugs and medical devices. This text provides an introduction to data capture and the management of a scientific study using the popular EDC solution REDCap.

Illuminator, Volume 3, Issue 3, Batten College Of Engineering & Technology, Old Dominion University

College of Engineering & Technology Newsletter

November 2019 issue of Illuminator, a monthly publication of ODU's Batten College of Engineering and Technology.

Why Deep Learning Is More Efficient Than Support Vector Machines, And How It Is Related To Sparsity Techniques In Signal Processing, Laxman Bokati, Olga Kosheleva, Vladik Kreinovich

Departmental Technical Reports (CS)

Several decades ago, traditional neural networks were the most efficient machine learning technique. Then it turned out that, in general, a different technique called support vector machines is more efficient. Reasonably recently, a new technique called deep learning has been shown to be the most efficient one. These are empirical observations, but how we explain them -- thus making the corresponding conclusions more reliable? In this paper, we provide a possible theoretical explanation for the above-described empirical comparisons. This explanation enables us to explain yet another empirical fact -- that sparsity techniques turned out to be very efficient in signal …

A Parametric Study For In-Pile Use Of The Thermal Conductivity Needle Probe Using A Transient, Multilayered Analytical Model, Courtney Hollar, Austin Fleming, Kurt Davis, Ralph Budwig, Colby Jensen, David Estrada

Materials Science and Engineering Faculty Publications and Presentations

By utilizing an in-pile measurement, thermal conductivity can be determined under prototypic conditions over a range of burnup. In this work we develop a multilayer quadrupoles analytical model to describe the transient thermal interactions between a line heat source (i.e. needle probe) and cylindrical nuclear fuel geometry for inpile thermal conductivity measurements. A finite element analysis of the detailed needle probe geometry was compared to results from the analytical model to verify the assumptions made in the analytical model. Experimentally, the needle probe was used to measure the thermal properties of polytetrafluoroethylene (PTFE) and stainless steel 304 with three different …

Utilizing A Single Silica Nanospring As An Insulating Support To Characterize The Electrical Transport And Morphology Of Nanocrystalline Graphite, David Estrada, Paul H. Davis, Twinkle Pandhi

Materials Science and Engineering Faculty Publications and Presentations

A graphitic carbon, referred to as graphite from the University of Idaho thermolyzed asphalt reaction (GUITAR), was coated in silica nanosprings and silicon substrates via the pyrolysis of commercial roofing tar at 800 °C in an inert atmosphere. Scanning electron microscopy and transmission electron microscopy images indicate that GUITAR is an agglomeration of carbon nanospheres formed by the accretion of graphitic flakes into a ~100 nm layer. Raman spectroscopic analyses, in conjunction with scanning electron microscopy and transmission electron microscopy, indicate that GUITAR has a nanocrystalline structure consisting of ~1–5 nm graphitic flakes interconnected by amorphous sp³ bonded carbon. …

Overview Of Flywheel Systems For Renewable Energy Storage With A Design Study For High-Speed Axial-Flux Permanent-Magnet Machines, Murat G. Kesgin, Peng Han, Narges Taran, Dan M. Ionel

Power and Energy Institute of Kentucky Faculty Publications

Flywheel energy storage is considered in this paper for grid integration of renewable energy sources due to its inherent advantages of fast response, long cycle life and flexibility in providing ancillary services to the grid, such as frequency regulation, voltage support, etc. The fundamentals of the technology and recent developments are reviewed, firstly with an emphasis on the design considerations and performance metrics. Then the progress and development trends in electric motor/generators employed in flywheel energy storage systems (FESS) are summarized, showing the potential of axial-flux permanent-magnet (AFPM) machines in such applications. Design examples of high-speed AFPM machines are provided …

Factors Affecting Cardiovascular Physiology In Cardiothoracic Surgery: Implications For Lumped-Parameter Modeling, Joshua Kaufmann, Ethan Kung

Publications

Cardiothoracic surgeries are complex procedures during which the patient cardiovascular physiology is constantly changing due to various factors. Physiological changes begin with the induction of anesthesia, whose effects remain active into the postoperative period. Depending on the surgery, patients may require the use of cardiopulmonary bypass and cardioplegia, both of which affect postoperative physiology such as cardiac index and vascular resistance. Complications may arise due to adverse reactions to the surgery, causing hemodynamic instability. In response, fluid resuscitation and/or vasoactive agents with varying effects may be used in the intraoperative or postoperative periods to improve patient hemodynamics. These factors have …

Usu Engineering Advising Center Gets Major Update | College Of Engineering, Utah State University

College of Engineering News

The College of Engineering continues its effort to improve all aspects of the student experience. On November 1, crews wrapped up a major renovation of the advising center located on the 3rd floor of the Anderson Engineering Building.

College Of Engineering And Applied Sciences 11/2019, College Of Engineering And Applied Sciences

College of Engineering and Applied Sciences News

• Scholarships Offer Bronco Engineers Endless Opportunities
• Students Thank Donors, Share Impact of Scholarships
• Together We Elevate
• $1.5 Million in Grants Strength WMU's Vision Rehab and Mobility Programs
• WMU Graduate Students Lead Cutting-Edge Automation Research
• Supporting the Invisible Need Project
• Engineering Students, Faculty and Staff Honored for Veterans Day
• Students Launch NASA Competition Dream and Other CEAS New

An Open-Source Integration Platform For Multiple Peripheral Modules With Kuka Robots, Mahyar Abdeetedal, Mehrdad Kermani Ph.D., P.Eng.

Electrical and Computer Engineering Publications

This paper presents an open-source software interface for the integration of a Kuka robot with peripheral tools and sensors, KUI: Kuka User Interface. KUI is developed based on Kuka Fast Research Interface (FRI) which enables soft real-time control of the robot. Simulink Desktop Real-Time™ or any User Datagram Protocol (UDP) client can send real-time commands to Kuka robot via KUI. In KUI, third-party tools can be added and controlled synchronously with Kuka light-weight robot (LWR). KUI can send the control commands via serial communication to the attached devices. KUI can generate low-level commands using data acquisition (DAQ) boards. This feature …

Computing Without Computing: Dna Version, Vladik Kreinovich, Julio C. Urenda

Departmental Technical Reports (CS)

The traditional DNA computing schemes are based on using or simulating DNA-related activity. This is similar to how quantum computers use quantum activities to perform computations. Interestingly, in quantum computing, there is another phenomenon known as computing without computing, when, somewhat surprisingly, the result of the computation appears without invoking the actual quantum processes. In this chapter, we show that similar phenomenon is possible for DNA computing: in addition to the more traditional way of using or simulating DNA activity, we can also use DNA inactivity to solve complex problems. We also show that while DNA computing without …

Deep Learning (Partly) Demystified, Vladik Kreinovich, Olga Kosheleva

Departmental Technical Reports (CS)

Successes of deep learning are partly due to appropriate selection of activation function, pooling functions, etc. Most of these choices have been made based on empirical comparison and heuristic ideas. In this paper, we show that many of these choices -- and the surprising success of deep learning in the first place -- can be explained by reasonably simple and natural mathematics.

Satisfaction-Aware Data Offloading In Surveillance Systems, Marcos Paul Torres

Electrical and Computer Engineering ETDs

In this thesis, exploiting Fully Autonomous Aerial Systems' (FAAS) and Mobile Edge Computing (MEC) servers' computing capabilities to introduce a novel data offloading framework to support the energy and time-efficient video processing in surveillance systems based on satisfaction games. A surveillance system is introduced consisting of Areas of Interest (AoIs), where a MEC server is associated with each AoI, and a FAAS is flying above the AoIs to support the IP cameras' computing demands. Each IP camera adopts a utility function capturing its Quality of Service (QoS) considering the experienced time and energy overhead to offload and process remotely or …

Study Of Distributed Versus Compressed Layouts For Physically Unclonable Functions, Joshua Trujillo

Electrical and Computer Engineering ETDs

Society continues to depend on electronics for everything from smart systems in our homes to cellphones and tablets, which are more powerful today than many desktop computers that are still in use [1]. With increased consumption of these electronic products comes an increase in problems, such as counterfeit integrated circuits being sold as genuine integrated circuits. This is just one of many problems that corporations and end users are having to deal with in this digital age.

Software security has been accepted as a problem by both the media and general public, but only recently has hardware security begun to …

Artificial Intelligence Empowered Uavs Data Offloading In Mobile Edge Computing, Nicholas Alexander Kemp

Electrical and Computer Engineering ETDs

The advances introduced by Unmanned Aerial Vehicles (UAVs) are manifold and have paved the path for the full integration of UAVs, as intelligent objects, into the Internet of Things (IoT). This paper brings artificial intelligence into the UAVs data offloading process in a multi-server Mobile Edge Computing (MEC) environment, by adopting principles and concepts from game theory and reinforcement learning. Initially, the autonomous MEC server selection for partial data offloading is performed by the UAVs, based on the theory of the stochastic learning automata. A non-cooperative game among the UAVs is then formulated to determine the UAVs' data to be …

Contingency Fuel Reduction, Diogo Youssef, Fabiano Gomes De Oliveira, Joao Centeno, Luciano Figueiredo Vale De Oliveira

Graduate Student Works

This project reviews the minimum fuel regulations for commercial passenger flights in different countries and intends to scientifically support a change in the existing contingency fuel requirement regulation in Brazil. This change represents fuel savings for Brazilian air operations, and it deploys into competitive advantage for Brazilian airlines compared to foreign air operators. The objective of this project is to provide the Brazilian civil aviation regulators with the necessary data to justify the reduction of the contingency fuel values from the current 10% to 5%. This project bases the analysis on the historical data of fuel planning and fuel consumption …