Engineering Commons^™

High Density 3d Seismic Data-Driven Comprehensive Interpretation Method Of Magmatic Intrusion Zones In Coal Seams And Its Application, Shan Rui, Zhang Guangzhong, Wang Qianyao, Yang Guangming

Coal Geology & Exploration

Ordovician limestone karst water is the main threatening water source for mining activities in Baode coal mine, and it is one of the main water supply sources. Ordovician limestone karst water samples were systematically collected in Baode coal mine, and the methods of correlation analysis, ion proportional coefficient, saturation index inversion simulation and Chlor-Alkali index were chosen to analyze the hydrochemical characteristics and its formation mechanism. The results showed that the water quality types of Ordovician limestone water changed from runoff zone to stagnant zone in a trend of HCO₃-Na(Na·Ca)→HCO₃·Cl-Na·Ca(Ca·Mg)→Cl-Na(Na·Ca). The mass concentration of each ion …

Collision Warning System For Small Maritime Autonomous Surface Ships, Won-Sik Kang, Young-Soo Park, Jeong-Bin Yim

Journal of Marine Science and Technology–Taiwan

In this study, wireless communication technologies used in road and marine traffic are compared and analyzed to develop a collision warning system for small maritime autonomous surface ships based on sufficient testing and technologically advanced wireless access in vehicular environment (WAVE) communication technology. Outstanding communication technologies, such as WAVE, have been used as the core technology for the infrastructural development of an intelligent transport system (ITS) as well as autonomous vehicles in many countries and industries. In WAVE communication, information is transmitted in 100-ms intervals. Therefore, it is feasible to maintain control of ships by fully supplementing the update interval …

Modeling Navigator Errors In Collisions Using Hidden Markov Models, Deuk-Jin Park, Jeong-Bin Yim, Chun-Ki Lee

Journal of Marine Science and Technology–Taiwan

Understanding navigator errors can be used as a basis for preventing collisions. Here, Hidden Markov Models (HMMs) are applied to navigator errors of fishing and merchant ships in collisions. Information on navigator errors providedin accident investigation reports issued by the Korean Maritime Safety Tribunal is surveyed. The surveyed information is converted into data using the framework of slips, lapses, and mistakes proposed in this study. The results of framework data states are inferred using the unsupervised learning of HMMs, with sequences of navigator errors contained in the error data. The expected errors learned using the navigator error models for fishing …

Remote Sensing Analysis Of Cold Water Temporal And Spatial Variability In The East Sea, Suk Yoon, Hyun Yang

Journal of Marine Science and Technology–Taiwan

In this study, we monitored temporal and spatial variability in summer cold water events in the East Sea of Korea. We defined cold water as seawater that is ≥ 5°C colder than the surrounding area. When cold water expands or changes in propagation direction, the National Institute of Fisheries Science (NIFS) of Korea issues a cold water upwelling warning to prevent aquafarm damage. To understand cold water effects, we analyzed the causes of continuous and strong cold water events, and propagation thereof, using satellite and in situ data for summer to autumn in the period 2011–2019. To investigate the cold …

A Bibliometric Survey On Ultra Wideband Multiple Input Multiple Output Antenna With Improved Isolation, Laxmikant K. Shevada, Hema D. Raut, Rajeshwari R. Malekar, Amruta S. Dixit, Sumit Kumar

Library Philosophy and Practice (e-journal)

Ultra wideband (UWB) technology remains a viable choice for very high speed data communication in future applications involving large bandwidth. For boosting the data communication efficiency and to mitigate the multipath fading issue faced by UWB system with existing narrowband systems, Multiple Input Multiple Output (MIMO) antenna system is used along with UWB. Mutual coupling which must be smaller in value plays a vital role in deciding the efficiency of MIMO antenna and hence it becomes as important aspect. The mutual coupling reduction techniques of various UWB MIMO antennas are surveyed in this bibliometric paper. The bibliometric survey aims to …

Mathematical Modelling And Numerical Simulation Of Mass Transfer During Deep-Fat Frying Of Plantain (Musa Paradisiacal Aab) Chips (Ipekere), James Abiodun Adeyanju, John Oluranti Olajide, Emmanuel Olusola Oke, Akinbode A. Adedeji

Biosystems and Agricultural Engineering Faculty Publications

This study developed a mathematical model following the fundamental principles of mass transfer for the simulation of the oil and moisture content change during the Deep-Fat Frying of plantain (ipekere) chip. The explicit Finite Difference Technique (FDT) was used to conduct a numerical solution to the consequential governing equation (partial differential equation) that was used to describe the mass transfer rate during the process. Computer codes that were computed in MATLAB were used for the implementation of FDT at diverse frying conditions. Samples of the plantain were cut into portions of 2 mm thickness, and these sliced portions …

Electronic Profiling Of Synthetic Dna Using Schottky Junctions, Souhad M.A Daraghma

Student Works (2020-2029)

Deoxyribonucleic acid (DNA) has attracted a lot of attention lately owing to the discovery of its semiconducting property and is considered as an interesting material that could find applications in nanotechnology and electronic devices. In-depth understanding of its charge transfer mechanism is however required for effective development of DNA-based technology. This unfortunately remains still a non-trivial task despite the numerous theoretical and experimental studies that have been conducted to date. The complexity of the previously employed methods, and their lack of accuracy has made it difficult to grasp the clear understanding of the electronic behaviors of the DNA molecules under …

Use Of Image Processing Algorithms For Mine Originating Waste Grain Size Determination, Sebastian Iwaszenko

Journal of Sustainable Mining

The utilization of mineral wastes from the mining industry is one of most challenging phases in the raw materials life cycle. In many countries, there are piles of mineral waste materials that date back to the previous century. There is also a constant stream of accompanying mineral matter excavated during everyday mine operation. This stream of waste matter is particularly notable for deep coal mining. Grain size composition of waste mineral matter is one of most important characteristics of coal originating waste material. This paper presents the use of image analysis for the determination of grain size composition of mineral …

City Tarmita (Old Termez) In The Kushans’ Period, Mamatmusaev Tohir

The Scientific-Practice Journal of Architecture, Construction and Design

This article is devoted to results of expeditions that were explored by archaeological monuments of Chingiztepa and Karatepa in 2004-2005 yy. in the Old Termez.

Modeling Intangible Assets Of A Logistic Organization, S. Yadgarov Nomozovich Yadgarov

Acta of Turin Polytechnic University in Tashkent

Abstract—The article presents the results of It will be relevant to fill this gap, presumably arising from insufficient elaboration of ap- proaches to the assessment of scientific knowledge, which, along with managerial knowledge and practical competencies of manage- ment in the field of logistics, generates intangible assets. In other words, it is required to show that the "science intensity" of the lo- gistics business is a capitalized asset.

Water Availability For Cannabis In Northern California: Intersections Of Climate, Policy, And Public Discourse, Betsy Morgan, Kaitlyn Spangler, Jacob Stuivenvolt-Allen, Christina N. Morrisett, Mark W. Brunson, Shih-Yu Simon Wang, Nancy Huntly

Biology Faculty Publications

Availability of water for irrigated crops is driven by climate and policy, as moderated by public priorities and opinions. We explore how climate and water policy interact to influence water availability for cannabis (Cannabis sativa), a newly regulated crop in California, as well as how public discourse frames these interactions. Grower access to surface water covaries with precipitation frequency and oscillates consistently in an energetic 11–17 year wet-dry cycle. Assessing contemporary cannabis water policies against historic streamflow data showed that legal surface water access was most reliable for cannabis growers with small water rights ( < 600 m³) and …

A Bibliographic Survey On Detection Of Covid-19 Patients Using Various Sensors In The Field Of Iot, Rutuja Patil, Akshay Sharma, Divya Bhatia, Mugdha Kulkarni, Yashika Patl

Library Philosophy and Practice (e-journal)

Due to a pandemic situation arising from the past few decades and the covid -19 patients are increasing at the rapid rate. Looking in the near future an IOT model is build which can be useful for people in coming years and allows rapid testing and efficient testing methodologies using various sensors such as Temperature, Respiration, RFID etc which takes various parameters. The study focuses around 412 scientific documents such as Journals, articles, book chapters and Patents in various papers. These documents are extracted from the scopus databases after querying with the keywords related to covid patients and IOT. The …

Ҳар Ҳил Материалларнинг Ейилиш Жараёнини Ўрганувчи Қурилма, Nurilla Karimovich Dadaxanov

Acta of Turin Polytechnic University in Tashkent

Амалиёт ва илмий - тадқиқот ишлари ўрганилганда, ишқаланувчи ва қўзғалувчан кесишмаларни ишдан чиқишига асосий сабаб, уларни ишқаланишдан ейилиши эканлиги кўрил. Машиналаридаги тишли узатмалар ва сирпанувчи сиртларидаги ейилишни ўрганувчи махсус қурилмалар ўрганилди. Лаборатория шароитида фойдаланиш осон бўлган ейилишни ўрганувчи қурилма тавсия қилинган.

Design And Control Techniques Of The Open-Circuit Subsonic Wind Tunnel With Closed Testing Section, Jamshid Yakhshilikov, Jamshid Inoyatkhodjaev

Acta of Turin Polytechnic University in Tashkent

This paper will describe the design and control techniques of the open-circuit subsonic wind tunnel with closed testing section (WT) for study purpose. The goal is to design a WT that can be tested at a wind speed of 30 m/s, where the desired cross-sectional area of the test chamber is 0.5x0.5 m. The pressure drop inside the WT has been calculated in order to select one of the available axial fans from the manufacturer’s catalog, and computational fluid dynamics (CFD) was performed to check the result. In order to obtain a smooth airflow in the test section, a proportional …

Technique Design Of Filter On Surface-Acoustic Waves, Dilmurod Abdujalilovich Davronbekov, Zafar Tulyaganovich Khakimov

Acta of Turin Polytechnic University in Tashkent

The article describes the design of filters on surface acoustic waves (SAWs), which are selective elements and are widely used in blocks, devices and signal processing systems in telecommunications, including wireless communication systems such as cellular, trunking and others. Designs of filters for surfactants are considered, which are divided into two large groups - by functional purpose and by a systematic approach to the synthesis of performance characteristics of filters for surfactants. Optimization algorithms and methods for synthesizing surfactant filters have been developed and improved. An improved technique for the synthesis of a filter based on surface acoustic waves is …

Method For Obtaining Resource-Saving Air Filtering Materials, Xurramov Gulovich Muxtor Ph.D Docent, Xurramova Sevara

Acta of Turin Polytechnic University in Tashkent

Abstract - The article discusses a method of obtaining air filtering material from natural polymer fruits of the luffa plant. The filtering material has better performance characteristics and can replace imported counterparts. The quality of air purification in the filter can be adjusted by the number of wound layers of filter material.

Problems And Ways Of Solution In Transit Of Automobile Transport Of The Republic Of Uzbekistan, Aziz S. Khalmukhamedov

Acta of Turin Polytechnic University in Tashkent

Maintaining the transit potential of a country is an integral part of the transport program of any country and vital for the economy. Unsatisfactory transit potential negatively affects the economy. Therefore, it is necessary to survey and establish indicators of the country’s transit potential. The determining factor of the country’s transit potential is the level and condition of the country’s highways. Thus, the indicator of the quality of the road - the flatness of the road - can become the main indicator that can be used for a generalized and quick assessment of the characteristics of the country’s transit potential. …

Calculation Of The Power Of The Undulating Surface Of The Screw Conveyor For Cleaning Lint, Sabrina Mukhamedjanova

Acta of Turin Polytechnic University in Tashkent

В статье представлены результаты расчета параметров шнекового конвейера с волнистой длиной шнека для транспортировки и очистки хлопка. Представлен аналитический метод определения силы вытягивания ворса по волнистой поверхности винта. Значения параметров волнообразной поверхности шнекового транспортера рекомендуются.

Retrospective Analysis Of Hydrologic Performance Of Green Infrastructure Systems Of The Save The Rain (Str) Program In Syracuse, New York, Priyanka Rajashekar

Theses - ALL

Combined sewer systems and urbanization are significant concerns confronted by many aging cities, including the City of Syracuse, New York. This study addresses the role of impervious surfaces in the direct discharge of surface runoff, domestic and industrial wastewaters into Onondaga Lake and tributaries during wet weather events. Onondaga County addressed the combined surface overflow (CSO) problem in 2009 through a stormwater management program known as "Save the Rain” (STR)." This strategy involved adopting a combination of constructed (gray) and plant-soil-atmosphere based (green) infrastructure (GI) practices to address the CSO issue. GI practices are a proven viable option for stormwater …

Securing User Interaction Channels On Mobile Platform Using Arm Trustzone, Amit Ahlawat

Dissertations - ALL

Smartphones have become an essential part of our lives, and are used daily forimportant tasks like banking, shopping, and making phone calls. Smartphones provide several interaction channels which can be affected by a compromised mobile OS. This dissertation focuses on the user interaction channels of UI input and audio I/O. The security of the software running on smartphones has become more critical because of widespread smartphone usage. A technology called TEE (Trusted Execution Environment) has been introduced to help protect users in the event of OS compromise, with the most commonly deployed TEE on mobile devices being ARM TrustZone.

This …

Discrete-Time Stable Geometric Controller And Observer Designs For Unmanned Vehicles, Reza Hamrah

Dissertations - ALL

In the first part of this dissertation, we consider tracking control of underactuated systems on the tangent bundle of the six-dimensional Lie group of rigid body motions, SE(3). We formulate both asymptotically and finite-time stable tracking control schemes for underactuated rigid bodies that have one translational and three rotational degrees of freedom actuated, in discrete time. Rigorous stability analyses of the tracking control schemes presented here guarantee the nonlinear stability of these schemes. The proposed schemes here are developed in discrete time as it is more convenient for onboard computer implementation and ensures stability irrespective of the sampling period. A …

Reinforcement Learning For Mobile Robot Collision Avoidance In Navigation Tasks, Zilong Jiao

Dissertations - ALL

Collision avoidance is fundamental for mobile robot navigation. In general, its solutions include: {\it map-based} and {\it mapless approaches.} In the map-based approach, robots pre-plan collision-free paths based on an environment map and follow their paths during navigation. On the other hand, the mapless approach requires robots to avoid collisions without referencing to an environment map. This thesis first studies the map-based approach for multiple robots to collectively build environment maps. In this study, a robot following a pre-planned path may encounter unexpected obstacles, such as other moving robots and obstacles inaccurately presented on an environment map. This motivates us …

User Authentication Across Devices, Modalities And Representation: Behavioral Biometric Methods, Amith Kamath Kamath Belman

Dissertations - ALL

Biometrics eliminate the need for a person to remember and reproduce complex secretive information or carry additional hardware in order to authenticate oneself. Behavioral biometrics is a branch of biometrics that focuses on using a person’s behavior or way of doing a task as means of authentication. These tasks can be any common, day to day tasks like walking, sleeping, talking, typing and so on. As interactions with computers and other smart-devices like phones and tablets have become an essential part of modern life, a person’s style of interaction with them can be used as a powerful means of behavioral …

4d Printing Shape Memory Polymers For Biomedical Applications, Kathleen Pieri

Dissertations - ALL

The development of 3D printing techniques using shape-memory polymers (SMPs) hascreated potentials for creating dynamic, three-dimensional structures that can be produced rapidly and be customized for specific and complex architectures. These qualities have made 3D printing a popular fabrication method for future SMP parts and devices. While important information about is known about the effects of printing parameters on 3D printed SMPs, there remains a gap in the understanding of these parameters on fundamental shape memory properties. Understanding the shape memory behavior of the SMPs post-printing can implicate potential advantages or weaknesses in using these materials in biomedical applications. Furthermore, …

Learning Semantic Information From Multimodal Data Using Deep Neural Networks, Krittaphat Pugdeethosapol

Dissertations - ALL

During the last decades, most collective information has been digitized to form an immense database distributed across the Internet. This can also be referred to as Big data, a collection of data that is vast in volume and still growing with time. Nowadays, we can say that Big data is everywhere. We might not even realize how much it affects our daily life as it is applied in many ways, ranging from online shopping, music streaming, TV streaming, travel and transportation, energy, fighting crime, to health care. Many organizations and companies have been collecting and analyzing large volumes of data …

Model-Based Approach For Product Requirement Representation And Generation In Product Lifecycle Management, Omer Yaman

Dissertations - ALL

The requirement specification is an official documentation activity, which is a collection of certain information to specify the product and its life-cycle activities in terms of functions, features, performance, constraints, production, maintenance, disposal process, etc. It contains mainly two phases; product requirement generation and representation. Appropriate criteria for the product design and further life-cycle activities are determined based on the requirement specification as well as the interrelations of product requirements with other life-cycle information such as; materials, manufacturing, working environments, finance, and regulations. The determination of these criteria is normally error-prone. It is difficult to identify and maintain the completeness …

Wrinkling Patterns On Curved Surface With Gradient Curvature Under Compression, Xiaoxiao Zhang

Dissertations - ALL

This work focuses on understanding the wrinkling patterns on a curved surface, i.e., tori and cones, with varying curvatures and global deformation. By tuning the geometry confine-ment and material properties, we can control the surface morphologies in these systems which can potentially be applied to wide applications in bio-inspired devices, microfluidic, and optical.

First, we investigate the wrinkles on a tri-layer torus consisting of an expanding thin outer layer, an intermediate soft layer, and an inner core with a tunable shear modulus. This study is inspired by pattern formations and evolutions in developmental biology, such as follicle pattern formation during …

Application Of Wavelet Transform To Endurance Time Analysis Method For Performance-Based Seismic Design, Mohammadhossein Mamaghani

Dissertations - ALL

Earthquakes occur quite frequently around the world, but the number of reliable recorded ground motion data for a given site is often limited. In addition, the use of present methodologies to modify existing earthquake records to match site conditions could change the relationship between the recorded earthquake characteristics and their actual physical attributes. The result is that these modified earthquakes could have qualities not quite the same as those of the real earthquakes. Instead of using scaling and spectral matching of real earthquakes, artificial earthquakes capable of mimicking both the physical conditions and qualities of real earthquakes should be generated …

The Compressive And Flexural Strength Of Concrete Containing Recycled Waste Plastic, Isaiah Akinkunmi

Master of Science in Civil Engineering Theses

Annually, tons of plastic wastes end up in landfills and the oceans through indiscriminate dumping, constituting a major source of pollution to the environment and threat to human health and marine lives. It therefore necessitates an innovative strategy to help mitigate the environmental hazards caused by this pollution. A feasible eco-friendly strategy is by using granulated plastics, fibers or regrinds in concreting. This research explored the feasibility of this strategy by testing the compressive and flexural strengths of hardened concrete specimens containing varying percent of plastic aggregates used as partial replacement for fine aggregates. The compressive strength of specimens of …

Feasibility Study Of A Micro-Electro-Mechanical-Systems Threshold-Pressure Sensor Based On Parametric Resonance: Experimental And Theoretical Investigations, Mark Pallay, Meysam Daeichin, Shahrzad Towfighian

Mechanical Engineering Faculty Scholarship

A tunable threshold pressure sensor based on parametric resonance of a microbeam subjected to electrostatic levitation is proposed. Parametric excitation can trigger a large amplitude vibration at twice the natural frequency if the magnitude of the driving force is large enough to overcome energy loss mechanisms in the system such as squeeze film damping. This causes a temporarily unstable response with a significant gain in oscillation amplitude over time until it is eventually capped by nonlinearities in the force or material or geometric properties. The instability divides the frequency region into two regions: distinct responses bounded by the system non-linearity, …