Engineering Commons^™

Version 2 Of The Global Catalogue Of Large Anthropogenic And Volcanic So2 Sources And Emissions Derived From Satellite Measurements, Vitali E. Fioletov, Chris A. Mclinden, Debora Griffin, Ihab Abboud, Nickolay Krotkov, Peter J.T. Leonard, Can Li, Joanna Joiner, Nicolas Theys, Simon Carn

Michigan Tech Publications, Part 1

Sulfur dioxide (SO2) measurements from the Ozone Monitoring Instrument (OMI), Ozone Mapping and Profiler Suite (OMPS), and TROPOspheric Monitoring Instrument (TROPOMI) satellite spectrometers were used to update and extend the previously developed global catalogue of large SO2 emission sources. This version 2 of the global catalogue covers the period of 2005-2021 and includes a total of 759 continuously emitting point sources releasing from about 10 ktyr-1 to more than 4000 ktyr-1 of SO2, that have been identified and grouped by country and primary source origin: volcanoes (106 sources); power plants (477); smelters (74); and sources related to the oil and …

Role Of Social Network On Technology Adoption: Application To Nebraska Producers In The Face Of Undesirable Vegetation Transitions, Sabrina Gulab, Holly K. Nesbitt, Simanti Banerjee, Theresa Floyd, Karina A. Schoengold

Cornhusker Economics

Conclusion

Producers need to have access to information regarding new conservation practices and technologies to ensure land management in the face of ecological threats in general and vegetation transitions (VTs) in the context of our study. This study investigates the role of an individual producer's social network on the willingness to seek information about technologies and management practices and the likelihood of new technology adoption with special attention to risk attitudes and producer spillover effects. Our results provide evidence that network composition and information obtained through a producer's social network don't influence an individual's willingness to seek information about new …

Damage Detection In Reinforced Concrete Member Using Local Time-Frequency Transform Applied To Vibration Measurements, Ning Liu, Thomas Schumacher, Yan Li, Lina Xu, Bo Wang

Civil and Environmental Engineering Faculty Publications and Presentations

Signal processing and analysis of structural vibration measurements are key components of structural damage detection (SDD) in structural health monitoring (SHM). The goal of signal processing is to extract subtle changes in the measured signals, which can be used to infer changes in structural parameters and damage. Time-frequency analysis is one of the most popular characterization methods for studying non-stationary vibration signals. In this article, the local time-frequency transform (LTFT) is applied and evaluated to calculate the time-domain signals because of its excellent time-frequency energy distribution properties. The LTFT matches the input data by the Fourier basis in an inverse …

Comparison Of In-Vitro 3d Human Embryoids With Current Models For Gastrulation, Jin Park

McKelvey School of Engineering Graduate Student Theses & Dissertations

Gastrulation is an early morphogenetic process that is conserved across most metazoans and lays out the future body plan through the formation and shaping of the three germ layers: endoderm, mesoderm, and ectoderm. Despite its importance, not much is known about the events surrounding human gastrulation that occurs in utero due to ethical and technical limitations on studying human embryos. Therefore, many researchers have devised protocols for creating in vitro models of gastrulation using embryonic stem cells. Initially starting with mouse embryonic stem cells, the field of in vitro embryo models has advanced rapidly, with protocols using human embryonic stem …

Data Augmentation For Neutron Spectrum Unfolding With Neural Networks, James Mcgreivy, Juan J. Manfredi, Daniel Siefman

Faculty Publications

Neural networks require a large quantity of training spectra and detector responses in order to learn to solve the inverse problem of neutron spectrum unfolding. In addition, due to the under-determined nature of unfolding, non-physical spectra which would not be encountered in usage should not be included in the training set. While physically realistic training spectra are commonly determined experimentally or generated through Monte Carlo simulation, this can become prohibitively expensive when considering the quantity of spectra needed to effectively train an unfolding network. In this paper, we present three algorithms for the generation of large quantities of realistic and …

A Literature Review On Agile Methodologies Quality, Extreme Programming And Scrum, Naglaa A. Eldanasory, Engy Yehia, Amira M. Idrees

Future Computing and Informatics Journal

most applied methods in the software development industry. However, agile methodologies face some challenges such as less documentation and wasting time considering changes. This review presents how the previous studies attempted to cover issues of agile methodologies and the modifications in the performance of agile methodologies. The paper also highlights unresolved issues to get the attention of developers, researchers, and software practitioners.

Enhancing Query Processing On Stock Market Cloud-Based Database, Hagger Essam, Ahmed G. Elish, Essam M. Shaban

Future Computing and Informatics Journal

Cloud computing is rapidly expanding because it allows users to save the development and implementation time on their work. It also reduces the maintenance and operational costs of the used systems. Furthermore, it enables the elastic use of any resource rather than estimating workload, which may be inaccurate, as database systems can benefit from such a trend. In this paper, we propose an algorithm that allocates the materialized view over cloud-based replica sets to enhance the database system's performance in stock market using a Peer-to-Peer architecture. The results show that the proposed model improves the query processing time and network …

Relationships Among Shoulder Rotational Strength, Range Of Motion, Pitching Kinetics, And Pitch Velocity In Collegiate Baseball Pitchers, Janelle A. Cross, Austin William Higgins, Cody C. Dziuk, Gerald F. Harris, William G. Raasch

Biomedical Engineering Faculty Research and Publications

Relationships among shoulder rotational strength, range of motion, pitching kinetics, and pitch velocity in collegiate baseball pitchers. J Strength Cond Res 37(1): 129–135, 2023—Throwing shoulder injuries are the most common type of injury experienced by baseball pitchers. Weakness in the shoulder musculature and insufficient throwing arm range of motion are both risk factors for developing a shoulder injury. The goal of this study was to determine correlations among shoulder rotational strength, range of motion, pitching kinetics, and pitch velocity in collegiate pitchers. Thirteen uninjured male college pitchers were evaluated. Clinical measures included shoulder internal and external rotation range of motion, …

Underestimated Passive Volcanic Sulfur Degassing Implies Overestimated Anthropogenic Aerosol Forcing, U. A. Jongebloed, A. J. Schauer, J. Cole-Dai, C. G. Larrick, R. Wood, T. P. Fischer, S. A. Carn, S. Salimi, S. R. Edouard, S. Zhai, L. Geng, B. Alexander

Michigan Tech Publications, Part 1

The Arctic is warming at almost four times the global rate. An estimated sixty percent of greenhouse-gas-induced Arctic warming has been offset by anthropogenic aerosols, but the contribution of aerosols to radiative forcing (RF) represents the largest uncertainty in estimating total RF, largely due to unknown preindustrial aerosol abundance. Here, sulfur isotope measurements in a Greenland ice core show that passive volcanic degassing contributes up to 66 ± 10% of preindustrial ice core sulfate in years without major eruptions. A state-of-the-art model indicates passive volcanic sulfur emissions influencing the Arctic are underestimated by up to a factor of three, possibly …

Wavelet-Based Harmonic Magnitude Measurement In The Presence Of Interharmonics, Flavio Costa, Stefan Häselbarth, Sergey Yanchenko, Kai Strunz, Aurenice M. Oliveira

Michigan Tech Publications, Part 1

The increasing proliferation of power electronic converters, nonlinear loads, and distributed generation are leading to increased levels of harmonic and interharmonics in power networks. As a consequence, power quality (PQ) has become a critical performance indicator for power utilities and end-users. This study proposes a novel harmonic estimation method based on the real-time stationary discrete wavelet packet transform (RT-SDWPT). The proposed technique decomposes an input signal into frequency bands with harmonic information at cutoff frequencies and uses a compensation strategy to estimate root mean square (RMS) values of harmonics at every sampling period. The performance and effectiveness of the proposed …

Predicting Young’S Modulus Of Indian Coal Measure Rock Using Multiple Regression And Artificial Neutral Network, Sayantan Chakraborty, Rohan Bisai, Rohit Roy, Sathish Kumar Palaniappan, Samir Kumar Pal, Karanam Uma Maheshwar Rao

Journal of Sustainable Mining

Accurate information on Young’s modulus (E) is required for simulating rock deformation in mines; on the other hand, it is very cumbersome to obtain in the laboratory and collecting drilled cores in sufficient amounts, especially in the case of soft rocks, is quite impossible. Empirical equations were deducted for E from easily determinable rock properties, and the final model was selected through different statistical strength parameter tests. The generalization of the equation was verified through the normal distribution tests of residues of the equation. R2 came to be 0.609 and was validated using an artificial neural network with an improved …

Gravity And Electrostatic Separation Of Unburned Coal From A Selected Fly Ash, Krzysztof Wierzchowski, Agnieszka Klupa, Barbara Białecka, Joanna Całus Moszko

Journal of Sustainable Mining

Unburned coal grains make it difficult to use fly ash economically, which causes energy losses in the fuel. The article presents the possibilities of separating unburned coal from selected fly ash. In order to assess the possibility of separation of unburned carbon, the analysis of grain density and ash composition was used. Unburned coal was separated by four methods – one wet gravity and three dry methods. It has been found that despite very fine ash grains, the quality and quantity of separation products are significantly dependent on the separation method used and the separated grains’ qualitative characteristics. The analysis …

Exploring The Characterization, Liberation And Flotation Response Of A Nigerian Low-Grade Copper Ore, Willie Nheta, Omoyemi O. Ola-Omole

Journal of Sustainable Mining

This study explores the characterization, liberation and flotation response of low-grade copper ore from Anka area, Zamfara state Nigeria. The ore was crushed, milled and sieved in accordance with BS 410 standard. It was characterized with XRD, XRF, SEM-EDS and AAS. Froth flotation was carried out with varying %solids, pH, retention time and collector dosages using SEX and sodium oleate. Particle size distribution of the ore shows its economic liberation between -150 and +106 µm while 80% passing corresponds to 175.7 µm using the Gaudin Schuhmann equation. However, according to metallurgical balance calculation, 63 µm proved to have the highest …

Production Management System In A Modern Coal And Coke Company Based On The Demand And Quality Of The Exploited Raw Material In The Aspect Of Building A Service-Oriented Architecture, Artur Dyczko

Journal of Sustainable Mining

The paper deals with the implementation of the JSW Capital Group’s (Poland) Demand and Quality Driven Production Management System (SPPJ – System Zarządzania Produkcją oparty na Popycie i Jakości) using a service-oriented architecture (SOA). The main components of the SPPJ architecture have been characterized, and the scope of their integration has been defined. The individual parts in the first area, i.e. quality management, have been described in detail. Due to the extensive nature of the issue, components in other areas, i.e. planning and scheduling, coal extraction and processing, coke production, as well as sales and logistics, have only been signalled. …

Simplified Cost Models For Underground Mine Evaluation A Handbook For Quick Prefeasibility Cost Estimates - Revised Edition, Thomas W. Camm, Scott A. Stebbins

Mining Engineering

This handbook provides simplified cost models for evaluating underground mines. Regression analysis is used to generate capital and operating cost equations for each model in the form Y = AXB, where Y is the cost estimated and X is the assumed production capacity in tonnes per day. A and B are constants determined by the regression analysis. Equations are developed for operating costs in five subcategories: equipment operation, supplies, hourly labor, administration, and sundries. Subcategories for capital costs are: equipment purchase, preproduction underground excavation, surface facilities, engineering & management, contingency, and working capital. Cost models are developed for eight underground …

Work Performance Evaluation As A Motivational Approach For Early-Career Self-Management, Francesc Torres, Santiago Silvestre, Ariadna Llorens, Antoni Elias

Practice Papers

This article presents the main characteristics of an academic experience based on the concept of "work performance evaluation", whose objective is to facilitate a smooth transition to the technological labor market. Its aim is to motivate STEM graduates to acquire relevant early professional skills and a self-management attitude in their careers. The results of a satisfaction survey after a pilot course experience with 30 bachelor engineering students at UPC, within the framework of the Engine4STEMers project [Torres, 2022], are also presented. This experience starts with the concept of “direction of service” and the rapid change in attitude and work methodology …

Teach As You Preach: Teacher Training For Stem-Educators At Dtu, Pernille Rattleff, Ditte Strunge Sass

Practice Papers

At technical universities today, we are training students for jobs that do not yet exist, to use technologies that have not been invented, to solve problems, we do not even know are problems yet. To succeed, we must create sustainable learning processes allowing our students to construct proper conceptual understanding and be able to retrieve, transfer, and apply knowledge, skills, and competences in new complex settings. To facilitate such learning processes, higher education institutions must train excellent teachers. This paper presents the framework for STEM teacher training at DTU – Technical University of Denmark. A framework that claims exactly to …

Developing A Flexible Materials Testing Curriculum For Future Engineers, Anja Pfennig

Practice Papers

Engineering students as future maker of things will face the challenge of keeping pace with rapidly evolving technologies and staying up-to-date with the latest innovations in their field. To cope with these demands a flexible course concept is developed for an undergraduate Materials Science lab course: Materials Testing at HTW Berlin based on a blended learning teaching concept implementing inverted classroom lecture scenarios. High quality micro modules are defined that may individually be combined or restructured and therefore offer sufficient flexibility to match the individual scientific background of the lecturer, the course learning outcome, main study subject or actual need …

An Autoethnography Of Becoming An Innovative Engineering Academic: Punk, Pirate And Guerilla Pedagogy, Michael Murray

Practice Papers

In this Autoethnography (AE) I consider, “becoming” the Most Innovative Teacher (2018) at my university. My identity as a university teacher, my epistemic beliefs, and my choice of vocational pedagogical techniques, have been influenced by my working-class background. No school qualifications, becoming the wrong sort of engineer (plumbing), and a twenty-three-year journey to a doctoral qualification. In 2013 my employer declared that I did not have a ‘significant responsibility for research’ (SRR). I was transferred to a teaching only contract as a punitive measure for not fulfilling my employers research expectations. My lateral migration to a teaching post was the …

Engineering Society: The Role Of Intersectional Gender And Diversity Studies For A Sustainable Transformation On The Case Of Interdisciplinary Engineering Education, Jennifer Bosen, Sebastian Bernhard, Evamaria Fauster, Marie Decker, Miriam Lämmerhirt, Carmen Leicht-Scholten

Practice Papers

Technological innovations are impacting societies in manifold ways and can accelerate a transformation toward sustainability. To enable a sustainable transformation through engineering, engineers educated to create technological solutions for global challenges must be educated in sustainability principles as postulated under ‘Education for Sustainable Development’ (ESD) in the Agenda for Sustainable Development. In technological fields, the ecological, as well as the economical perspective of sustainability, are often addressed, but as recent research has highlighted, sustainability needs to be addressed holistically; this means including the social dimension to a greater degree and applying an intersectional understanding of gender and diversity throughout all …

Problem-Based Learning Of Heuristic Methods For Decision Problems In Mathematics, Computer Science And Industrial Engineering, Felix Engelhardt, Christina Büsing, Sabrina Schmitz

Practice Papers

In a digitalized world, most processes can be formalised, measured and described mathematically. The use of analytical methods to optimise such models and decisions constitutes operational research (OR), developing new methods for a specific problem and analysing them are part of discrete optimisation (DO). However, there is limited research on OR and application driven DO in higher education. Furthermore, neither is well integrated into engineering education research.

In this work, we present a case study of an interdisciplinary Master’s course on heuristic methods in the context of OR and DO. We discuss to what extent wellestablished approaches from engineering education …

Continuous Assessment In Electric Power Engineering For Marine Engineers, Jimmy Ehnberg, Stefan Lundberg

Practice Papers

To tackle the climate challenge, all sectors need to contribute, including electrified shipping. Electrified shipping is not only propulsion but also loading and unloading equipment. This transformation requires increased skills and understanding of electric power engineering for the personal onboard, not least for the marine engineers. Therefore, a changed in the curriculum was needed. However, when more theoretical course content was added to two consecutive courses, the student view and passing rate dropped. Although the student view improved quickly, the passing rate recovered slower. To address this issue, continuous assessment was introduced to counteract the drops. The aim of this …

Insider Action Research On Ai Needs Within The Eit Innoenergy Ecosystem, Inge De Waard, Albert Gonzalez, Anouk Gelan

Practice Papers

This practice paper describes an ongoing insider action research within the EIT InnoEnergy ecosystem. Its goal is to inspire teaching staff from the seven EIT InnoEnergy double degree Master of Science programmes to integrate Artificial Intelligence (AI) tools and knowledge into their courses based on joint learning. This insider action research runs from 2023 to the end of 2024. In late 2022, a problem statement of ‘AI tools for Education’ was identified by EIT InnoEnergy teachers as being crucial for their future learning and teaching processes. To align the needs of teaching staff with the complexity of emerging AI tools, …

Why And How Do Students Need To Have Their Mental Health Considered In Engineering Schools?, Shirley Bayle, Manon Bocahut, Loïc Champeau, Alya Muneaux, Cathel Zitzmann

Practice Papers

This paper addresses the students’ mental health in higher education and more specifically in engineering schools. Several studies have shown student mental health and wellbeing can affect students’ academic performance. We investigate how student’s mental health is considered in engineering schools as well as how it should be and study the case of our engineering school. First, we present several research and studies conducted on how mental health is considered in higher education and its impact on academic performance. In the second part, we study the case of our engineering school with the implementation of a survey among students and …

The Immersive Placement Experience: Sink Or Swim?, Mohammed Shaikh, Abed Alaswad, Sarah Junaid

Practice Papers

To excel in their respective engineering fields, engineering students need to be equipped with a combination of technical and interpersonal skills. Central to excellent interpersonal skills is good communication. The aim of the study is to evaluate how well-prepared mechanical and design engineering students felt entering into their industrial placements, using a UK university as a pilot case study. For the study interviews were carried out with final year students who had previously completed an industrial placement year, focussing on communication, workplace diversity, technical working methods and university teaching styles. Reponses were anonymised, coded and analysed using quantitative and qualitative …

A Scoping Review: Examples Of Mission-Driven And Mission-Oriented Innovation In Engineering Education Research, Svend Hauekrog Christiansen, Anna Overgaard Markman, Aida Guerra, Xiangyun Du

Practice Papers

Engineers of the future are being requested to become part of solutions for dealing with complexities in the world, exemplified by the adaptation of the 17 United Nations sustainable development goals (SDGs). Ensuring that engineering students are introduced to these is of the utmost importance, if sustainable solutions to grand challenges shall be developed, whether being of technological, social and cultural, and/or economic character. This paper entails a scoping review of the concept of mission-driven or mission-oriented innovation, as defined by the European Commission (EC) and the Organization for Economic Co-operation and Development (OECD), in engineering education research (EER). Seven …

A Three-Year Academic Track Towards Literacy In Sustainable Development - A Computer Science Study Program Case, Kamilla Klonowska, Marijana Teljega, Daniel Einarson

Practice Papers

The 3-year Bachelor Programme in Software Development study program at Kristianstad University, Sweden, aims to integrate not only academic competencies and skills in subject courses but also critical thinking skills on how Computer Science can contribute to achieving the sustainable development goals.

Starting from an understanding of the sustainable development goals, students begin a process of designing and implementing applications for some specific goals. Through participation in various activities, students exchange the ideas and perspectives, and are challenged to consider multiple solutions to complex problems. The students' critical thinking, communicative abilities, and the ability to solve problems both individually as …

Unlocking Complex Vector Calculus Concepts For Engineering Students Using Geogebra, Pragashni Padayachee, Thabiso Khemane

Practice Papers

There is an increasing drive to exploit the power of technology to improve students mathematical conceptual understanding. This work is motivated by the authors research presented at the SEFI 2022 conference which reported on students experienced difficulties with the double integral, a concept central to vector calculus. Some of the difficulties included visualising and sketching three dimensional surfaces and regions of integration and changing coordinate systems from rectangular to polar. Vector calculus is a crucial subject for engineering students, but its abstract concepts can be challenging to grasp. This curriculum proposal is a response to improve visualisation and conceptual understanding …

Current Topics In Technology-Enabled Stroke Rehabilitation And Reintegration: A Scoping Review And Content Analysis, Katryna Cisek

Articles

Background. There is a worldwide health crisis stemming from the rising incidence of various debilitating chronic diseases, with stroke as a leading contributor. Chronic stroke management encompasses rehabilitation and reintegration, and can require decades of personalized medicine and care. Information technology (IT) tools have the potential to support individuals managing chronic stroke symptoms. Objectives. This scoping review identifies prevalent topics and concepts in research literature on IT technology for stroke rehabilitation and reintegration, utilizing content analysis, based on topic modelling techniques from natural language processing to identify gaps in this literature. Eligibility Criteria. Our methodological search initially identified over 14,000 …

Clutch Analysis And Design For The Wildcat Pulling Team Quarter Scale Tractor Drivetrain, Lauren Doyle

Lewis Honors College Thesis Collection

The University of Kentucky (UK) Wildcat Pulling Team competes in the annual ASABE International Quarter Scale Tractor Student Design Competition. In 2022 the team placed 3rd overall in the competition, missing 1st place by 23 points. The loss in points was due to the clutch subassembly having issues related to maneuverability, manufacturability, and serviceability. The goal of this project was to redesign the 2022 tractor’s drivetrain for the new 2023 competition tractor. Background research was conducted on three types of clutches: manual, electric, and centrifugal. The electric clutch and centrifugal clutch with manual override were tested to determine their viability …