Engineering Commons^™

The Potential Impact Of A Voluntary Non-Punitive Self Report Program Under The Scope Of The Brazilian Civil Aviation Authority, Audrey Gonzalez, Bráullio Amaral, Felipe Piton, Laércio De Araujo, Marcelo Marcusso

Student Works

The key recommendation from this study is to purpose the Brazilian National Civil Aviation Authority evaluation over the implementation of a new voluntary and non-punitive safety reporting program, with a different scope from the current one. The voluntary self-reporting programs in place in the USA, Europe and Australia should be used as a regulatory reference and the program development and implementation should be executed in close coordination with the different industry stakeholders.

To access if the current Brazilian State Safety reporting system meets ICAO requirements, the researchers accessed pertinent aviation safety regulatory legislation. Additionally, to access if the current Brazilian …

Durability Of Concrete Produced With Alternative Supplementary Cementitious Material, Craig Newtson, Brad Weldon, Judit Garcia, Seyedsaleh Mousavinezhad, William Toledo

Publications

Historically, Class F fly ash has been chosen as a supplementary cementitious material (SCM) in concrete for its ability to mitigate alkali-silica reaction (ASR). However, future availability of fly ash is uncertain because the energy industry has been investing in renewable energy production and removing coal burning generating stations from operation. Consequently, there is a growing need to find new, cost effective and environmentally friendly alternatives to fly ash. This study investigated a locally available natural pozzolan mined from a pumicite deposit near Espanola, NM for its ability to mediate ASR. Concrete and mortar mixtures included SCM contents ranging from …

Study Of Atmospheric Pollution And Health Risk Assessment: A Case Study For The Sharjah And Ajman Emirates (Uae), Yousef Nazzal, Nadine Bou Orm, Alina Barbulescu, Fares Howari, Manish Sharma, Alaa E. Badawi, Ahmed A. Al-Taani, Jibran Iqbal, Farid El Ktaibi, Cijo M. Xavier, Cristian Stefan Dumitriu

All Works

Dust is a significant pollution source in the United Arab Emirates (UAE) that impacts population health. Therefore, the present study aims to determine the concentration of heavy metals (Cd, Pb, Cr, Cu, Ni, and Zn) in the air in the Sharjah and Ajman emirates’ urban areas and assesses the health risk. Three indicators were used for this purpose: the average daily dose (ADD), the hazard quotient (HQ), and the health index (HI). Data were collected during the period April–August 2020. Moreover, the observation sites were clustered based on the pollutants’ concentration, given that the greater the heavy metal concentration is, …

Energy Harvesting For Self-Powered Sensors For Smart Transportation Infrastructures, Anil K. Agrawal, Mohsen Amjadian, Hani Nassif

Civil Engineering Faculty Publications

In this research project, an Electromagnetic Energy Harvesting System (EMEHS) is developed for harvesting the kinetic energy of ambient and traffic-induced vibrations and carry out a detailed feasibility study and impacts of such system for application on transportation infrastructures. The proposed EMEHS utilizes the innovative concept of creating array of large number of small permanent magnets through certain optimization criteria to achieve strong and focused magnetic field in a particular orientation. When these magnets are attached to a flexible sub-system and placed close to the copper coil, ambient and traffic-induced vibration of the sub-system induces eddy current in copper the …

Dlr Covid-19 Mobility Review: Evaluation And Review Of The Phase 1 Covid-19 Mobility And Public Realm Works Undertaken By Dún Laoghaire Rathdown County Council, Sarah Rock Dr., Dave O'Connor, Lorraine D'Arcy Dr., Odran Reid

Reports

Evaluation and Review of the Phase 1 Covid-19 Mobility and Public Realm Works undertaken by Dún Laoghaire- Rathdown County Council.

Interim findings, June 2021.

Decarbonizing Rural Residential Buildings In Cold Climates: A Techno-Economic Analysis Of Heating Electrification, Filippo Padovani, Nelson Sommerfeldt, Francesca Longobardi, Joshua M. Pearce

Michigan Tech Publications, Part 1

Given the need for decarbonization of the heating sector and the acute need of a propane replacement in the U.S. Upper Midwest, this study quantifies the techno-economic characteristics of sustainable heating electrification in isolated rural, residential buildings in cold climates without natural gas supply. Archetypal buildings are modeled under four levels of electrification. At each electrification level, a parametric solar photovoltaic (PV) sizing analysis is performed and the total life cycle cost, renewable fraction and greenhouse gas (GHG) emissions are calculated based on the primary energy supply for each building type. Cost optimal solutions are stress-tested with multi-dimensional sensitivity analyses. …

Impact Of Exposure On Thin Epoxy Overlay Performance, Abul Fazal Mazumder

Dissertations

Thin epoxy overlays are used for improving the condition and extending the service life of bridge decks. The tensile bond pull-off strength, evaluated as per the ASTM C1583, is used as the performance indicator. A failure in the substrate with a tensile strength of 250 psi or greater is considered acceptable. However, the performance evaluated on in-service bridge decks shows inconsistent results. Laboratory studies by several researchers documented a distinct performance difference when the overlays are exposed to room temperatures in comparison to elevated temperatures. However, the most influential parameters such as concrete surface profile, thermal compatibility between overlay and …

Development Of Sensor, Sensory System And Signal Processing Algorithm For Intelligent Sensing Applications, Xingzhe Zhang

Dissertations

Sensors have been receiving significant attention in the last decade and the demand for sensory systems has increased in recent years due to the rapid growth in the field of artificial intelligence (AI). Sensors can improve people’s awareness by providing them with real-time information on the environment and their immediate health conditions. This dissertation presents the fulfilment of three main projects and focuses on the development of a sensor, a sensory system, and a sensor signal recognition system for AI applications by employing printed electronics, analog circuit design, and digital signal processing techniques.

In the first project, a multi-channel stethograph …

Micro-Proppant Placement In Hydraulic And Natural Fracture Stimulation In Unconventional Reservoirs: A Review, Masoud Aslannezhad, Azim Kalantariasl, Zhenjiang You, Stefan Iglauer, Alireza Keshavarz

Research outputs 2014 to 2021

Tight hydrocarbon reservoirs require stimulation to improve the recovery of oil and gas resources. Hydraulic fracturing is a technique extensively employed in the oil and gas industry to generate fractures including primary and secondary fractures. To keep these fractures open, proppants are used. However, some of these ractures are very narrow for conventional proppants to penetrate and prop, hence smaller proppants called micro-proppants are required. These micro-proppants can improve the hydraulic conductivity of both, the primary fractures and the untouched microfractures, leading to enhanced oil and gas recovery. This paper presents a critical review on the progress of current micro-proppants …

Influence Of Pressure, Temperature And Organic Surface Concentration On Hydrogen Wettability Of Caprock, Implications For Hydrogen Geo-Storage, Muhammad Ali, Nurudeen Yekeen, Nilanjan Pal, Alireza Keshavarz, Stefan Iglauer, Hussein Hoteit

Research outputs 2014 to 2021

Hydrogen (H₂) as a cleaner fuel has been suggested as a viable method of achieving the de-carbonization objectives and meeting increasing global energy demand. However, successful implementation of a full-scale hydrogen economy requires large-scale hydrogen storage (as hydrogen is highly compressible). A potential solution to this challenge is injecting hydrogen into geologic formations from where it can be withdrawn again at later stages for utilization purposes. The geo-storage capacity of a porous formation is a function of its wetting characteristics, which strongly influence residual saturations, fluid flow, rate of injection, rate of withdrawal, and containment security. However, literature …

Formulating Automated Responses To Cognitive Distortions For Cbt Interactions, Ignacio De Toledo, Giancarlo Salton, Robert J. Ross

Conference papers

One of the key ideas of Cognitive Behavioural Therapy (CBT) is the ability to convert negative or distorted thoughts into more realistic alternatives. Although modern machine learning techniques can be successfully applied to a variety of Natural Language Processing tasks, including Cognitive Behavioural Therapy, the lack of a publicly available dataset makes supervised training difficult for tasks such as reforming distorted thoughts. In this research, we constructed a small CBT dataset via crowd-sourcing, and leveraged state of the art pre-trained architectures to transform cognitive distortions, producing text that is relevant and more positive than the original negative thoughts. In particular, …

Traffic Collision Avoidance System: False Injection Viability, John Hannah, Robert F. Mills, Richard Dill, Douglas D. Hodson

Faculty Publications

Safety is a simple concept but an abstract task, specifically with aircraft. One critical safety system, the Traffic Collision Avoidance System II (TCAS), protects against mid-air collisions by predicting the course of other aircraft, determining the possibility of collision, and issuing a resolution advisory for avoidance. Previous research to identify vulnerabilities associated with TCAS’s communication processes discovered that a false injection attack presents the most comprehensive risk to veritable trust in TCAS, allowing for a mid-air collision. This research explores the viability of successfully executing a false injection attack against a target aircraft, triggering a resolution advisory. Monetary constraints precluded …

An Adjustable Stiffness Torsional Magnetic Spring With A Linear Stroke Length, Dawei Che, Jonathan Z. Bird, Alex Hagmüller, Md Emrad Hossain

Electrical and Computer Engineering Faculty Publications and Presentations

This paper presents the analysis, mechanical design, and proof-of-principle experimental testing of a new type of adjustable stiffness torsional magnetic spring for an ocean generator application. Unlike prior published designs the rotary magnetic spring is shown to have a highly linear adjustable stroke length. The presented torsional spring is experimentally shown to be able to create a ± 45° angular stroke range with a peak torque of ± 39.1 N·m. The stiffness is adjusted by using a stepper motor to axially adjust the axial magnet offset. The stepper motor contains a brake so that power is not expended when maintaining …

Simple Procedure For Calculating Parameters Of Permanent Magnet Linear Generator And Methods For Maximizing Power Absorption Using Less Dependent Mathematical Model / Low Computationally Cost Controllers In Wave Energy Converters, Bisni Fahad Mon

Dissertations

The study comprises of designing permanent magnet linear generator (PMLG) for wave energy converters (WECs) and method for maximizing power absorption using less dependent mathematical model or low computationally cost controllers. There are three proposed controller methods: the damping control using maximum power point tracking (MPPT), the reactive control using MPPT, and finite control set model predictive control (FCSMPC).

The first part of the thesis is started with the design and testing of a laboratory scale test-rig for wave energy converters (WECs). The main element of the test-rig is a double-sided permanent magnet linear generator (PMLG). In this study, detailed …

Calculation Of Measurement Uncertainty, Ibush Luzha, Fidan Feka, Berat Durmishi, Burim Morina

UBT International Conference

Calculation of measurement uncertainty is the basis of measurements, tests in calibration laboratories, tests and their calibration, tests reports. Calculation of measurement uncertainty is one of the basic requirements of the international standard ISO/IEC 17025 General requirements for the competence of testing and calibration laboratories, on the metrological traceability of measurements. Calculation of measurement uncertainty has a direct impact on the development of trade and technology, the production and marketing of certain products in the measurement chain with a high degree of accuracy. The measurement uncertainty is calculated and defined as a value, accompanied by the result of a measurement, …

Application Of Prestressing With Pretension And Post-Tension In Precast Beams, Bardh Kurteshi, Nebi Pllana

UBT International Conference

In Nowdays, prestressed concrete founds wide application in the construction of engineering structures. Where concrete elements are subjected to mandatory stresses to gain more favorable behaviors. This can be realized by applying prestressing force with system of pre-tension and post-tension.

Analysis of precast beams elements with different sections by applying these prestressing methods, will help us to determine which method of force application is going to be more favorable for realization.

Analysis of precast beams elements for different shapes of sections for two methods of prestressing, that with pretensioned and post-tension, by checking the basic condition criteria of servisability limit …

Audit Of Road Safety Elements In National Road N25.2 “Prishtinë – Gjilan”, Gresa Xhemaili, Nol Dedaj

UBT International Conference

With the increase of the number of vehicles and the number of kilometers of the road as well as the time of their construction, the number of accidents has also increased, therefore it is very important to audit the road elements (level of roughness, macro and micro deformations, turns, longitudinal and transverse slope, shoulders, erosion and filling in roads, drainage, etc.) which directly affect the safety of road traffic. The audit of road elements will give us a clear picture on the identification of road factor elements in certain road segments of the road N -25.2 Prishtina - Gjilan, which …

Warshipping: Hacking The Mailroom, Jackson Szwast, Bryson Payne

KSU Proceedings on Cybersecurity Education, Research and Practice

Everyone knows what package shipping is, but not everyone knows what warshipping is. Corporate mailrooms are rarely considered as part of the cybersecurity attack surface of most organizations, but they offer physical access to millions of uninspected packages daily. UPS shipped 5.5 billion items last year, with their daily average being 21.9 million items and operating through 1,800 locations in 2020. FedEx shipped 6.5 million packages daily and operates 2,150 locations. The United States Postal Service delivered 143 billion pieces of mail in 2019. Increasingly the world’s consumers are relying on e-commerce, and during the recent COVID-19 pandemic, package deliveries …

Environmental Sustainability Of Precast And Cast-In-Situ Concrete Structures: A Case-Study Comparison Based On Built Supermarket Facilities, Bruno Dal Lago, Davide Visconti, Visar Krelani

UBT International Conference

Environmental sustainability is assuming a growing role in the strategic plans of several countries worldwide. In order to switch to more sustainable solutions in the construction field, many researchers and efforts are focusing on the material level, mainly concerning solutions aimed at partially or fully replacing the most impacting components with alternative or recycled solutions characterised by a lower carbon footprint or a higher durability, in view of a life-cycle assessment. Alongside these positive efforts, another instrument to reduce the environmental impact of construction materials, often less tackled by researchers, is reduction of material consumption by structural optimisation, often ensured …

International Conference On Energy Efficiency Engineering, University For Business And Technology - Ubt

UBT International Conference

UBT Annual International Conference is the 9th international interdisciplinary peer reviewed conference which publishes works of the scientists as well as practitioners in the area where UBT is active in Education, Research and Development. The UBT aims to implement an integrated strategy to establish itself as an internationally competitive, research-intensive university, committed to the transfer of knowledge and the provision of a world-class education to the most talented students from all background. The main perspective of the conference is to connect the scientists and practitioners from different disciplines in the same place and make them be aware of the recent …

Particle Shape Analysis Of Industrial Sand Using Traditional And Computational Geometry Methods, Gregor Kravanja

UBT International Conference

Silica sand is widely used as a raw material in the manufacture of building and construction products. Particle shape parameters such as sphericity and roundness were determined using both the Krumbein-Sloss diagram and the ImageJ processing algorithm. A total of 10 samples from production plants were comprehensibly analyzed. Olympus SZX16 microscope was used for image acquisition. Image analysis was performed separately for each grain size fraction ranging from 0.063 mm up to 2.0 mm. The microscope images showed that there was a visible difference in color and shape between manufactured sands. For sand shape parameters, the computerized method was significantly …

Theoretical Bases Of Diagnostics Of Radiators By Heat Load Of Passenger Cars, U R. Salomov, D A. Moydinov, S M. Yusupov

Scientific-technical journal

This article presents the technical characteristics of the phenomena occurring in the radiator pipes under the influence of the thermal regime of mechanisms determined by the technical condition of the cooling system components of cars with internal combustion engines.

Development Trends Of Mechatronics, Peter Kopacek, Ines Bula

UBT International Conference

Mechatronics is an interdisciplinary field integrating Mechanical Engineering, Electronics, and Computer Science. In this paper are presented the “face” of was changing dramatically over recent years. The complexity of devices and systems has increased dramatically, requiring a system-level approach to mechatronics design. This approach helps engineers to combine mechanical and control design, execute a test easily, and reuse algorithms within the final embedded delivery framework. This trend at system level is fuelled by growing investments in the fields of medical, life sciences and renewable energy as well as developments in industrial machinery. This approach greatly improves the design process by …

Cost Oriented Image Processing For Mobile Robots, Luan Mulaku, Peter Kopacek, Fatmir Azemi, Fevzi Osmani

UBT International Conference

Mechatronic is used in a lot of activities, and our study intends to add supplementary components making the system more intelligent. A mobile robot which follows the path while avoiding obstacles and using the implementation of image processing on real worldThe economic aspect has become a major part of the investment in technology and needs to be taken into account. Project was of low cost, and there will be no impacts for not implementing this project in the future, considering little equipment added. Hoping the results of this work will be taken into consideration for further generations of mobile robots …

The Challenges Of Industrial Automation In Manufacturing Companies In Kosovo, Saranda Demolli

UBT International Conference

In the century in which we are living every sphere of life is moving towards automation and digitalization as well as the production of products and the creation of services. Industrial automation and the application of digital technology are opportunities but also challenges. This research was conducted in manufacturing and service companies in Kosovo. How many opportunities do automation companies give you and what challenges have they faced, Also in this research are analyzed how much knowledge companies have, for the new technologies that are applied such as: Industry 4.0, AI (artificial intelligence), ML (machine learning), 3D printer, ‘Cloud’ technology, …

3d Digital Measurement Of Dimensions, Displacements, And Deformations Of The Parts, Betim Shabani, Fisnik Osmani, Xhemajl Mehmeti

UBT International Conference

The 3D digital measurement is commonly used nowadays when parts are with complex geometry, and fast development is required. This comes also from constant technological improvements of devices like 3D scanners. However, the use of them for particular applications needs research that shows the wide range of usability. The purpose of this study has to do with better understanding of the measurement of dimensions, displacements, and deformations of the parts using non-contact techniques, which are elaborated with the case studies for each investigation. Base on the presented research, we see the approach of using the 3D scanning technique for several …

Design Of Smart Device For Knee Joint, Arxhend Jetullahu

UBT International Conference

The relationship between people and technology is growing every day, technology assistance in transportation, technological equipment in surgery, miniature models that are informing the person about their health. Using these devices often happens to be complicated especially when it comes to older ages. The purpose of this paper is to develop a prototype that will measure the load directly from the person’s knee. The device will contain several sensors that will sent to the ESP32 microcontroller, the person is informed on his mobile and it is very user-friendly. The device is built on the analysis of modeling by engineering software …

Errors In Distance And Angle Measurements Of Ultrasonic Sensor Hc-Sr04, Fidan Smaili, Plotdon Beqiri, Rinor Lubovci

UBT International Conference

This project presents the measurement of distances and angles by means of Arduino Uno microcontroller and Ultrasonic Sensor HC-SR04. Accuracy on distance and angle measurements of the sensor has been investigated. The change of object distance in motion is displayed and monitoring of the change of the angle and position. Data measurements were compared with the real measurement unit of the meter to observe their deviation, 1.6% of the standard deviation is observed between real measurement and sensor data, meanwhile, at the angle data measurements were no deviation is observed.

The Calculation Of Appropriate Surfaces For Installation Of Solar Thermal Collectors And Solar Panels, Case Study City Of Pristine, Drita Qerimi

UBT International Conference

In Kosovo participation of renewable resources is very symbolic, most of the generated electricity produced from fossil fuel, a part of the energy comes from the import. Pristina is ranked among the most polluted sites and this is mainly: by transport, old power plants, and fossil fuel use as a heating fuel for winter seasons. Therefore, the aim of this paper is the use of solar energy knowing that the average sun duration for the city of Pristine is 5.44[h], while the average horizontal irradiation is 3.79[kWh/m²] per day. In this paper, the first step is analyzing and mapping of …

Energy Efficiency: Case Of Study For An Italian Railway Station, Kliton Bylykbashi, Giuseppe Bonifazi, Riccardo Gasbarrone, Silvia Serranti

UBT International Conference

The study will analyze the thermal and electrical energy consumption of the largest Italian railway stations, comparing the clustered data from yr. 2014 to yr. 2018, to evaluate the energy consumption trend in TOE, Tonnes of Oil Equivalent. The aim will be the electrical and thermal consumption reduction, thanks to the use of the photovoltaic technology, integrated with batteries and BACS (building automation and control system). A specific software (Termolog Design Photovoltaic and Acca Solarius PV) has been used to carry out the results; to identify improvement solutions, an algorithm made it possible to identify the best set point of …