Engineering Commons^™

The Study Of Static Characteristics Of High Current Electromagnetic Transducer, Sulton Fayzullaevich Amirov, Abdurauf Malikovich Safarov, Dilshod Shavkatovich Rustamov

Chemical Technology, Control and Management

The results of the study of static characteristics, sensitivity and the degree of non-linearity of the static characteristic of high-current electromagnetic converters are determined, the dependence of the static characteristic on the absolute value of the magnetic field strength of the converted current is shown, the laws of the distribution of magnetic flux in parallel rods and the magnetic voltage between them along the length of the rods are determined, i.e. Mathematical models of modulation magnetic circuits are developed taking into account the distribution of their electrical and magnetic parameters

A Study On The Influence Of Synthetic Compositions Of Liquid Detergents On Rheological And Functional Properties, Nazokat Aktamovna Erkayeva, Aktam Ulashevich Erkayev, To'lqin Isamurodovich Nurmurodov, Atabek Tulepbergenovich Kaipbergenov

Chemical Technology, Control and Management

The main challenges in the production of liquid detergents, based on the use of equipment, a mixer with a reduction of much less production waste and harmful emissions into the environment, are considered. A simplified manufacturing process with a significant reduction in material and energy costs is shown. The influence of mass ratios and temperature on the rheological properties of the synthesized Synthetic detergents was investigated and showed that with increasing temperature the density of the samples decreases. Also, studies of cleaning ability showed that in a sample containing the highest amount of lauryl sulfate it has a maximum cleaning …

Mathematical Model Of The Implemented Impairer Of The Information Impact Process On The Operative-Technological Communication Network Based On Ip-Technologies, Abdulxak Abdulxairovich Khalikov, Olimdjan Khikmatovich Urakov

Chemical Technology, Control and Management

The article discusses the mathematical model of the implemented intruder of the process of information impact on the operational-technological communication network based on IP technologies, representing the process of functioning of the IP telephone network in the form of a stochastic network, using the Mason equation for closed graphs, an equivalent function of the stochastic network, the network functioning process operational-technological communication-IP in the conditions of the nth type of cyber attack of the intruder. To demonstrate the method for determining the distribution function of time for bringing data packets in the operational-technological communication-IP network, a particular problem is considered. …

Block Form Of Kalman Filter In Processing Images With Low Resolution, Avazbek Marakhimov, Lyudmila Varlamova

Chemical Technology, Control and Management

The article discusses the issues of preliminary processing and image filtering. One of the problems with image preprocessing is the presence of blurring and noise. The problem of highlighting the background of a moving object. Next, consider the problem of constructing a Kalman filter of block type. When using the Kalman filter to solve the adaptive filtering problem, the monitored process is the vector of optimal filter coefficients. The purpose of applying the Kalman filter is to minimize the variance of the estimate of the vector random process. Noise filtering in the form of a block filter allows to restore …

Analysis Of Design And Efficiency Of Absorbtion Refrigerating Machines, K.F. Karimov, N.S. Zakirova, Sh.V. Muminov, J.J. Axmedov

Chemical Technology, Control and Management

The results of analysis of designs and efficiency of absorption refrigerating machines are considered. Based on the analysis of schemes and designs of modern absorption refrigerating machines used for obtaining cold at various levels, the main characteristic parameters of refrigeration equipment are given, their capabilities and disadvantages are indicated. Methods for evaluating the efficiency of absorption columns and machines are analyzed. It is proposed to study the absorption column as part of the refrigeration machine, as well as to evaluate the efficiency of heat and mass transfer devices, machines exergetic method.

Sustainable Algorithms For Synthesis Of Regulators In Adaptive Control Systems Of Parametrically Uncertain Objects, Uktam Farkhodovich Mamirov

Chemical Technology, Control and Management

The problems of formation and construction of regularized algorithms for estimating the parameters of regulators in systems of indirect adaptive control in parametrically indeterminate objects are considered. When constructing regularized estimates for regulator settings, the concept of pseudoinversion is used based on computing solutions with an unbiased square of length using an equivalent extended joint system. Algorithms for iterative refinement of the desired solution are given. These computational procedures make it possible to regularize the synthesis problem of the considered algorithms for estimating the parameters of regulators and to raise the qualitative indices of control processes of dynamic objects under …

Research Of Rheological Properties And Filtrability Of Suspension In The Production Of Potassium Hydroxide By Calcareous Method, Behzod Begmatovich Turakulov, Aktam Ulashevich Erkayev, Baxrom Xayrievich Kucharov, Zokir Kalandarovich Toirov, Akhmed Maksetbaevich Iskenderov

Chemical Technology, Control and Management

The problems of the production of potassium hydroxide from local raw materials of Uzbekistan are considered. The methods for producing potassium hydroxide are analyzed. The rheological properties of the intermediate solutions and suspensions formed in the process of obtaining potassium hydroxide by the calcareous method have been investigated. The optimal technological parameters of the process — the content of potassium hydroxide in the liquid phase, the ratio of the solid and liquid phases and the concentration of the washing solution were established to achieve the maximum filtration rate. The effect of the amount and concentration of washing water on the …

Ensuring Information Security By Multi-Criterial Restriction Of Access To Information Resources, A.I. Dusmuxamedov, Т.Т. Abduraxmonov, A.A. Saidov

Chemical Technology, Control and Management

The problems of ensuring information security of information systems of state bodies are considered. The analysis of possible threats from "insiders" against which technical methods of the solution of this problem are recognized not effective is carried out. The main object of the study is the information resources of state bodies and the process of monitoring the actions of employees who have access to them. The method of multi-criteria restriction of access to information resources in the form of conditions of horizontal and vertical restrictions for users of information systems is offered.

Flood Management Deep Learning Model Inputs: A Review Of Necessary Data And Predictive Tools, Jacob Hale, Suzanna Long, Steven Corns, Tom Shoberg

Engineering Management and Systems Engineering Faculty Research & Creative Works

Current flood management models are often hampered by the lack of robust predictive analytics, as well as incomplete datasets for river basins prone to heavy flooding. This research uses a State-of-the-Art matrix (SAM) analysis and integrative literature review to categorize existing models by method and scope, then determines opportunities for integrating deep learning techniques to expand predictive capability. Trends in the SAM analysis are then used to determine geospatial characteristics of the region that can contribute to flash flood scenarios, as well as develop inputs for future modeling efforts. Preliminary progress on the selection of one urban and one rural …

Four-Pole Rail Coefficients Of The Jointless Track Circuit In The Presence Of One Of The Ends Track Circuit Insulating Joints, Marat Aliev, Ravshan Aliev, Ezozbek Tokhirov, Tolaniddin Nurmuhamedov

Chemical Technology, Control and Management

The article describes the equivalent circuit of a jointless rail circuit with one throttle transformer and derives equations for the analysis and synthesis of rail circuits when powered on one side. A mathematical model and analytical expressions are developed taking into account the resistance of the rails and the resistance of the insulation. The coefficients of a rail four-poul with one throttle transformer supply voltage on the one hand. The calculated expressions of the four-terminal devices and the sensitivity criteria of the rail circuit when a single line breaks, as well as the minimum transmission resistance, are presented and derived.

A Mixed Method Study Of Infrastructure Resilience Education And Instruction, John Richards, Suzanna Long

Engineering Management and Systems Engineering Faculty Research & Creative Works

As the frequency and severity of natural and man-made disasters increases, the importance of improving the resilience of complex infrastructure systems in an uncertain environment is increasingly critical. Proper training and education are key components to addressing this issue, but it is unclear how and where modeling under uncertainty, infrastructure systems management, and resilient systems are integrated into the standard undergraduate and graduate engineering management curriculum. This research uses a mixed method to determine whether and at what level engineering managers receive instruction regarding the implementation of tools and techniques to improve infrastructure resilience. A review of current courses and …

P-12 Potential Compact Fiberboard From Combining Shredded Corrugated Cardboard And Pet Water Bottles, Joshua Lim Khye Shuen

Celebration of Research and Creative Scholarship

Corrugated cardboard and plastic bottles (PET) can each be recycled; however the current research is looking at recycling both cardboard and PET into a new combined material. The current method of recycling corrugated cardboard is to shred and recombine the material to make new cardboard. According to the Container Recycling Institute (http://www.container-recycling.org/), only 7.5% of PET manufactured in the US and Canada are recycled. The sheer amount of corrugated cardboard and PET bottles can be recycled for other practical uses. Corrugated cardboard and PET bottles, when shredded and placed into a 3x3x6 inch mold, can be combined together and baked …

Do After-School Robotics Programs Expand The Pipeline Into Stem Majors In College?, Cathy Burack, Alan Melchior, Matthew Hoover

Journal of Pre-College Engineering Education Research (J-PEER)

One result of the growing concerns over the numbers of young people moving into science, technology, engineering and mathematics (STEM)-related careers has been the expansion of formal and informal STEM education programming for pre-college youth, from elementary school through high school. While the number of programs has grown rapidly, there is little research on their long-term impacts on participant education and career trajectories. This paper presents interim findings from a multi-year longitudinal study of three national after-school robotics programs that engage students in designing, building, and competing complex robots with the goal of inspiring long-term interest in STEM. Focusing on …

Vanadium-Based Nanomaterials For Improved Zn Ion Storage, Jianwei Lai

LSU Master's Theses

Rechargeable aqueous zinc-ion batteries (ZIBs) have been intensively studied as novel promising large-scale energy storage systems recently, owing to their advantages of high abundance, cost effectiveness, and high safety. However, the development of suitable cathode materials with superior performance are severely hampered by the sluggish kinetics of Zn²⁺ with divalent charge in the host structure.

Our Work demonstrates boosting the electrochemical performances of nanostructured cathode materials for aqueous ZIBs. The first project is focused on the interlayer-expanded V₆O₁₃∙nH₂O nanosheets as promising cathodes. Benefiting from the synthetic merits of its favorable architecture and expanded …

Redefining Power In The Engineering Classroom | College Of Engineering, Utah State University

College of Engineering News

Secrets are not welcome in Idalis Villanueva’s engineering classroom. She doesn’t believe in withholding information or making assumptions about what students may or may not know. On day one, she asks students to refer to her as Dr. Villanueva or Dr. V; she clearly posts assignment due dates; she lists the objectives of each lesson; and she clarifies uncommon terms to make sure everyone is on the same page. This seemingly basic approach to instruction is nothing new, but emerging research suggests it is crucial to the success of would-be engineers.

Vibration Evaluation Of The Driver’S Seat Of Mf 285 Tractor In Conducting The Tillage Operations, Gholamhossein Shahgholi, Sedagat Fazeli, Saleh Harami Mousavi

Emirates Journal for Engineering Research

The purpose of this study was to investigate the effect of the tractor speed on the tractors’ seat vibration and to assess the level of comfort of the driver during the agricultural operation using moldboard and disc plows. Experiments were conducted on sandy loamy soil in a factorial experiment based on randomized complete block design with three replications. The effect of the type of tillage implement using the moldboard and disc plows, the velocity of advance in four levels of 4.5, 6 and 8.8 km/h and vibration was measured and evaluated at three directions of longitudinal (x), lateral (y) and …

A Deep Learning Approach For Motion Segment Estimation For Pipe Leak Detection Robot, Cihan Uyanik, Erdem Erdemir, Erkan Kaplanoglu, Ali Sekmen

Computer Science Faculty Research

The trajectory motion of a robot can be a valuable information to estimate the localization of an autonomous robotic system, especially in a very dynamic but structurally-known environments like water pipes where the sensor readings are not reliable. The main focus of this research is to estimate the location of meso-scale robots using a deep-learning-based motion trajectory segment detection system from recorded sensory measurements while the robot travels through a pipe system. The idea is based on the classification of the motion measurements, acquired by inertial measurement unit (IMU), by exploiting the deep learning approach. Proposed idea and utilized methodology …

A Deep Learning Approach For Final Grasping State Determination From Motion Trajectory Of A Prosthetic Hand, Cihan Uyanik, Syed F. Hussaini, Erdem Erdemir, Erkan Kaplanoglu, Ali Sekmen

Computer Science Faculty Research

Deep Learning has been gaining popularity due to its numerous implementations and continuous growing capabilities, including the prosthetics industry which has trend of evaluation towards the smart operational decision. The aim of this study is to develop a reliable decision-making system for prosthetic hands which is responsible to grasp or point an object located in the interaction area. In order to achieve this goal, we have exploited the measurements taken from a low-cost inertial measurement unit (IMU) and proposed a convolutional neural network-based decision-making system, which utilizes 9 distinct measurement variables as input, 3 axis accelerometer, 3 axis gyroscope and …

Table Of Contents, The Editors

Coal Geology & Exploration

No abstract provided.

Trilinear Chart Classification Method Of Mine Water Hazard Type Based On Factors Of Water Recharge, Hu Weiyue, Zhao Chunhu

Coal Geology & Exploration

The results of the classification of hydrogeological types in coal mines are relatively inadequate to reflect the characteristics of water hazards such as water sources and water inrush channels. It is not very instructive to carry out water control work in coal mines starting from the basic elements of mine water hazard formation, this paper analyses the characteristics and harm degree of mine water hazard under different types of mine water sources, water inrush channels and their combination conditions, the water inrush source can be divided into 4 types according to its water-rich degree and supply capacity:weak supply of slow …

Analytical Solution For Surrounding Rock Of Circular Roadway Based On Generalized Smp Criterion Considering Seepage And Dilatancy, Pan Jiliang, Ren Fenhua

Coal Geology & Exploration

Based on the generalized spatially mobilized plane(SMP) criterion, considering intermediate principal stress, pore water pressure and dilatancy characteristics of surrounding rock, an ideal elastic-plastic model of roadway surrounding rock is established. According to the elastic-plastic theory, the unified analytical solutions of stress field, displacement field and radius of plastic zone under seepage flow are obtained. Then, the stress distribution of surrounding rock and the radius of plastic zone calculated by SMP criterion are compared with those calculated by Mohr-Coulomb(M-C) criterion, and the influencing factors such as pore water pressure and dilatancy angle of surrounding rock are analyzed. It is shown …

Identification Model Of The Independence Right-Fuzzy Variable Theory Of Water Inrush Source, Dong Donglin, Li Xiang, Lin Gang, Bian Jianling, Cao Chenglong, Wu Heng

Coal Geology & Exploration

In the process of coal mining, mine water hazard accidents occur frequently. In order to find out the water source of mine water inrush quickly and accurately, and reduce the harm caused by mine water inrush to coal mine production, taking Zhaogezhuang mine as an example, and the method of combining independent weight coefficient with fuzzy variable theory was used to select six kinds of hydrochemical indexes of Na⁺, Ca²⁺, Mg²⁺, Cl^-, SO₄^2- and HCO₃^-, 20 sets of water sample data of Zhaogezhuang mine were analyzed and …

Micro Ct-Based Meticulous Characterization Of Porosity Evolution Of Coal In The Process Of Biodegradation, Dong Zhiwei, Guo Hongyu, Xia Daping, Liu Xile, Bai Yang, Zhao Guojun

Coal Geology & Exploration

To explore the bio-permeability enhancing effect via methanogen treatment on different rank coals after anaerobic fermentation, micro-CT was used to analyze the change characteristics of pore structure of coal before and after biodegradation. At the same time, the adsorption characteristics of methanogens on the coal surface after anaerobic biodegradation were observed by scanning electron microscopy to analyze the reasons for the effect difference of biological transformation of different rank coals. The results show that the porosity and total throat length of the coal samples biodegraded increase and the connectivity of the pores is enhanced, it is indicated that coal samples …

Comprehensive Outburst Prevention Technology Of Outburst-Prone Coal Seam Uncovered By Crossdrift In Hongshan Coal Mine, Wang Beifang, Liang Bing, Zhang Jing, Chi Haibo, Huang Pujiang

Coal Geology & Exploration

Coal and gas outburst is a complex geo-dynamic disaster induced by a coal seam uncovered by crossdrift, threatens the safety and efficient production of coal mines seriously. For this, Hongshan coal mine was selected as engineering background to simulate mechanical response characteristics of surrounding rock during uncovering No.12 coal seam in a gas bursting hazardous zone with FLAC^3D software. Then the outburst mechanism during uncovering a coal seam by a crossdrift was revealed, and comprehensive outburst prevention technology combining mine gas pre-drainage and improved metal skeleton was put forward. The results showed that the abutment pressure ahead of the …

Molecular Simulation Of The Influence Of Foam Fracturing Fluid Additives On Coalbed Methane Diffusion, Yang Zhaozhong, Han Jinxuan, Zhang Jian, He Rui, Lu Yanjun, Li Xiaogang

Coal Geology & Exploration

Materials Studio(MS) software was used to establish a slit pore molecular model which considers the in-teractions among water-bearing coal, foam agent and foam stabilizer. Based on molecular diffusion theory, the diffusion ability of methane molecule respectively affected by four common foam agents and four foam stabilizers was calculated. Compared to original water-bearing coal, self-diffusion coefficient of coalbed methane(CBM) is reduced by 71.3%, 74.7%, 56.3%, 54.0% after adding foaming agents including sodium dodecyl sulfonate(SDS), sodium lauryl sulfate(SLS), sodium dodecyl benzene sulfonate(SDBS) and lycine respectively. Based on adding SDBS into water-bearing coal, the self-diffusion coefficient of CBM is further reduced by 63.2%, …

Reasons Of Low Yield And Stimulation Measures For Vertical Cbm Wells In High-Rank Coal, Jia Huimin, Hu Qiujia, Qi Kongjun, Liu Chunchun, Fan Bin, He Jun

Coal Geology & Exploration

The CBM production is usually low and development effect is poor in China, which are mainly due to the poor adaptability of the stimulation measures to the geological conditions. This article, based on the low-yield reasons for vertical CBM wells in Zhengzhuang block in southern Qinshui basin, puts forth corresponding stimulation measures, analyzes the mechanism and the geological adaptability, optimizes the parameters of specific stimulation measures and carries out pilot test. The research and practices show that in deeply buried area, fractures are difficult to form, and re-fracturing technology can make the fracture turn and increase the crack length, which …

Estimation Method And Application Of Free Gas Content In Coal, Jiang Wenping, Zhang Qun, Zhang Peihe, Dong Mintao, Tian Xinjuan, Ru Ting

Coal Geology & Exploration

In order to study the distribution characteristics of free gas content in coal reservoirs, based on the understanding that free gas mainly exists in coal pores, the estimation method of free gas content is optimized. Based on the test data of coalbed methane arameters of 42 groups of coals with different ranks from lignite to anthracite in typical coal-bearing areas of China, the free gas content of different coal samples were calculated by using the optimized method of free gas content estimation, and compared with the results of desorption gas content. The results show that the ratio of free gas …

Analysis On The Type Of Reservoir Pressure Drop And Drainage Control Of Coalbed Methane Well In The Southern Block Of Shizhuang, Yi Yongxiang, Tang Shuheng, Zhang Songhang, Yan Xinlu, Wang Kaifeng, Dang Feng

Coal Geology & Exploration

In order to fully understand the reservoir pressure variation characteristics of coalbed methane wells in the southern block of Shizhuang and based on the analysis of reservoir geological parameters and the analysis of actual production data, the reservoir pressures of different types of production wells are analyzed. The specific analysis of the drainage control and reservoir sensitivity effects is also carried out based on the abnormal wells. The results showed that the reservoir lamination of coalbed methane wells in the southern block of Shizhuang can be divided into three types, namely type of rapid pressure drop, type of medium-term stability …

Development And Test Of Self-Adjusting Deflected Wellhead Sealing Device For Coalbed Methane Wells, Pang Tao

Coal Geology & Exploration

In order to solve the problem of fluid and gas leakage in coal seam gas well, a self-adjusting deflected wellhead sealing device suitable for coal seam gas wells is developed. The device consists of three parts:Smooth rod sealing box, self-adjusting deflected part and lower sub. The self-adjusting deflected part is a smart combination of universal joint and high pressure flexible rubber tube, which makes the sealing box and the polished rod always keep good concentricity. Practical application shows that this kind of polished rod sealing device has reliable sealing performance, simple structure and the prospect of popularization and application.

Experimental Study On Contact Angle And Pore Characteristics Of Unsaturated Loess, Jing Yanlin, Wang Hao, Tao Chunliang, Yang Lina, Liu Jianwei, Wen Xin

Coal Geology & Exploration

Contact angle and pore size are important factors affecting soil wettability, permeability and capillarity. In order to further understand the capillary characteristics and permeability of unsaturated loess, the contact angle test and mercury intrusion test of unsaturated loess were carried out. The relationship between pore size and contact angle was analyzed in details. Moreover, the variation of pore and contact angle with depth was discussed. It is found that the contact angle of loess in the dry state is higher than the contact angle of loess in the natural state; as the depth of the formation increases, the contact angle …