Engineering Commons^™

What Caused The Unseasonal Extreme Dust Storm In Uzbekistan During November 2021?, Xin Xi, Daniel Steinfeld, Steven M. Cavallo, Jun Wang, Jiquan Chen, Kanat Zulpykharov, Geoffrey M. Henebry

Michigan Tech Publications

An unseasonal dust storm hit large parts of Central Asia on 4-5 November 2021, setting records for the column aerosol burden and fine particulate concentration in Tashkent, Uzbekistan. The dust event originated from an agropastoral region in southern Kazakhstan, where the soil erodibility was enhanced by a prolonged agricultural drought resulting from La Niña-related precipitation deficit and persistent high atmospheric evaporative demand. The dust outbreak was triggered by sustained postfrontal northerly winds during an extreme cold air outbreak. The cold air and dust outbreaks were preceded by a chain of processes consisting of recurrent synoptic-scale transient Rossby wave packets over …

Integrating Nist And Iso Cybersecurity Audit And Risk Assessment Frameworks Into Cameroonian Law, Bernard Ngalim

Journal of Cybersecurity Education, Research and Practice

This paper reviews cybersecurity laws and regulations in Cameroon, focusing on cybersecurity and information security audits and risk assessments. The importance of cybersecurity risk assessment and the implementation of security controls to cure deficiencies noted during risk assessments or audits is a critical step in developing cybersecurity resilience. Cameroon's cybersecurity legal framework provides for audits but does not explicitly enumerate controls. Consequently, integrating relevant controls from the NIST frameworks and ISO Standards can improve the cybersecurity posture in Cameroon while waiting for a comprehensive revision of the legal framework. NIST and ISO are internationally recognized as best practices in information …

Analysis Of Thin Plates In Bending By New Rectangular Strain Based Element., Samira Chichoune, Cherif Rebiai

Emirates Journal for Engineering Research

Abstract

This paper deals with the development of a new simple four node rectangular finite element for bending analysis of thin plates. The displacement s field of this element is based on the assumed functions for the various strains satisfying the compatibility equations. This developed element has three degrees of freedom at each node (two rotations and one translation), and it passed successfully benchmark tests in the case of thin plates without shear locking phenomena. The obtained numerical results using the developed element converge toward both analytical and reference solutions.

Taking Curriculum Reform To The Next Level: The Need For Decolonising Work In Engineering Education, Gabrielle Orbaek White

Research Papers

As humanity is faced with unparalleled challenges, from the climate emergency to rising inequality, there is a renewed emphasis on the role of engineering professionals to contribute solutions to global problems. However, there is increasing recognition that the way that engineers are trained through higher education is inadequate to prepare them to address these grand challenges. This paper aims to deepen theoretical perspectives on why the engineering education status quo is falling short. Taking a British perspective, I outline how the epistemology and cultural ideologies, or the “episteme,” of engineering continues to shape our discourses within modern day engineering education, …

How Diverse Are Global Perspectives On Diversity, Equity, And Inclusion In Engineering Education?, Jan Van Maele, Becky Bergman, Inês Direito, Homero Murzi

Workshops

The SEFI Special Interest Group on Gender & Diversity has recently been renamed as Diversity, Equity and Inclusion, broadening the definition from a focus on gender to embrace a wider range of diverse identities – such as language and cultural background, religion, physical ability, and socioeconomic status – and to promote and support equity and inclusive practices within SEFI and beyond. In the process of redefining the Special Interest Group’s mission, it has become clear that definitions of diversity, equity and inclusion may vary considerably between different contexts and institutions. Therefore, it is relevant for the engineering education community to …

Employment Pathways For Emerging Talent: Evaluating The Certificate In Computer And Data Science (Cds), Andres Felipe Salazar Gomez, Aikaterini Bagiati, Gillian Walsh, Lana Cook, Admir Masic

Research Papers

This research paper presents the results of the first evaluation of the learning experience, challenges and opportunities of the Certificate in Computer and Data Science (CDS). Specifically, it evaluates two different real-life experiential learning opportunities (ELOs): supervised internships and self-guided projects.

MIT Emerging Talent, an initiative that expands upon the efforts of the MIT ReACT (Refugee Action Hub), provides talented learners a platform to advance their skills, leverage their expertise, access a professional career, and become leading change agents in their communities. The CDS is a 12 month-long online learning program that opens education to employment pathways for emerging talent, …

What Do Engineers Do With What They Know: Observing Specialized Technical Knowledge In Practice, Zach Simpson, Corrinne Shaw, Nicky Wolmarans

Research Papers

The gap between engineering education and practice has been subject to considerable research attention. We look at studies of engineering practice with a view to informing education. Our interest is in identifying technical knowledge and how it is used in practice, as well as what kind of technical knowledge is used but not taught. This paper seeks to systematically review the existing literature on engineering practice, drawing from and adding to a prior data set developed by Andrea Mazzurco and colleagues, who found that there was a gap in studies of specialised technical knowledge in practice. Investigating their dataset we …

Who Funds Engineering Education Research? Content Analysis Of Funding Sources Described In Three Top-Tier Engineering Education Research Journals, Andrew Valentine, Natalie Wint, Bill Williams

Research Papers

Engineering education research (EER) is becoming a globally connected field of inquiry but there is a lack of sustained funding opportunities available. Currently, it is not quantitatively known which entities are most prolific for providing funding for EER globally. This study attempted to map which entities were most commonly cited as providing funding for EER. Three top-tier EER journals were chosen, articles published in the journals during 2021 were identified. Metadata about each publication was downloaded from Scopus. Funding information for each publication was qualitatively analysed, then synthesised to provide a quantitative understanding of EER funding sources. There was a …

A Cultural-Historical Activity Theory Approach To Studying The Development Of Students' Digital Agency In Higher Education, Lilian Ganduri, Brandon Collier-Reed, Corrinne Shaw

Research Papers

Researching classroom practice requires theoretical resources that can explain the variety inherent in such an activity as well as the dynamic nature of classroom practice. Cultural-Historical Activity Theory (CHAT) offers the possibility of accounts of social, cultural, and historical aspects of the context and of how students adapt and transform in these contexts. This conceptual paper engages with the relevance and utility of CHAT for researching student practices in a course as an activity system.

First-Generation Engineering Students' Identity Development: Early Forays Into The Workplace, Renee Smit

Research Papers

In the context of global shortages of engineering professionals, research into factors that impact on training and retention of qualified engineers is important – this includes first-generation engineering students, a largely under-researched group of students. Research has shown that an elaborated, well-developed engineering identity is important for the retention of both engineering students at university, and for engineers in practice. Professional identities are fluid, emerging and develop over the lifetime of the professional. However, we still know little about the nature of a professional engineering identity, and how it develops.

Drawing on insights from the philosophy of science, I make …

Towards Sustainability - Fostering Gender Dimensions For Inclusiveness In Science Technology Engineering And Production (Step) Fields, Ann Sharon Lourens, Nicole Truter

Research Papers

Statistics from the Engineering Council of South Africa indicate that a large number of women who enter the engineering sector leave their careers in the early stages because they felt isolated and experienced discrimination in this traditionally maledominated industry. Furthermore, research on global trends have highlighted the importance of an inclusive atmosphere as a result of the increase in the proportion of female decision-makers, racial and ethnic background differences, persons with disabilities and generation gaps with resulting different learning styles and needs. Literature also suggests that workforce diversity that maximises inclusion and minimises resistance, allows organisations to create change that …

The Experience Of Women In Engineering Apprenticeships | A Scoping Review, Joy Herron, Brian Bowe, Richard Gallery, Una Beagon

Research Papers

This scoping review aims to synthesise the existing literature on the experience of women in engineering and trade apprenticeships, discuss the common themes and highlight areas for future research. Apprenticeships are not only required to address the current skills shortage in the engineering profession which threatens to impede our ability to deliver on our sustainability goals and restrict economic growth they are also a proven pathway for women to enter engineering programmes. Despite growing social and political interest in increasing gender diversity in the workforce, data shows that women remain significantly underrepresented in engineering apprenticeship programs.

Sustaining Engineering Education Research: Sharing Qualitative Research Data For Secondary Analysis, Jennifer Case, Holly Matusovich, Marie Paretti, Susan Lord, Lisa Benson

Workshops

The need for secondary data analysis practices emerges from multiple sources. Qualitative researchers often have rich data sets that far exceed the time available for data analysis, and many of us wish that someone could spend more time with the data. We also recognize that local data sets would benefit from further analysis that linked our data with related data collected in different contexts. Many also grapple with increasing data sharing requirements from funding agencies that raise concerns about participant confidentiality and data integrity. This workshop provides a chance to explore potential responses to these concerns through a robust dialogue …

Assessment Of Online Accreditation Of Engineering Programs: A Cultural-Historical Activity Theory (Chat) Analysis, Kasongo Didier Nyembwe, Tajudeen Mojisola, Zach Simpson

Research Papers

This paper shows how Cultural Historical Activity Theory (CHAT) can provide a practical framework for online accreditation of engineering programmes in South Africa. Far from being inaccessible, CHAT can provide engineering accreditation bodies with a conceptual framework and theory of change for online accreditation of engineering programs. Within the context of program accreditation in South Africa, the paper leverages CHAT to comprehend the dynamic interplay of digital technologies as deployed during online accreditation including, amongst others, video conferencing, social media and cloud storage, and how these affect online accreditation of engineering programmes. It is concluded that theory-based research and practice …

Innovating Pedagogy, Space And Technology In A South African Engineering Classroom, Fatima Mohamed Darsot, Zach Simpson

Research Papers

The use of technology has become ubiquitous in higher education; however, many university teachers, particularly in the global South, are not confident with using technology when teaching. As a result, engineering curricula often maintain the predominance of “chalk and talk” modes of pedagogy, which often leave students disengaged from what they are learning. Technology offers access to new modes of teaching and learning, but needs to be used in pedagogically meaningful ways. Lecturers are required to teach in innovative ways, using innovative technologies, but are required to do so in classrooms designed and built many decades ago. This is problematic …

‘There’S A Machine On The Team’: Employers’ Perspectives On Graduate Employability In Digitised Workplaces, Chris. Winberg, Simon Winberg

Research Papers

The implementation of interconnected digital and cyber-physical technologies across engineering fields is changing the nature of professional work. These new forms of work present both technical and social challenges; it is therefore timely to consider the implications of the digital transformation of work for engineering education. In this study the focus is on the technical and social skills that employers have identified as desirable for productive work practices in digital/cyber-physical environments. The research question guiding the study is: What technical and social skills do employers in digitised/cyber-physical workplaces value in engineering graduates? The study drew on Legitimation Code Theory’s Specialization …

How To Characterise Performance In Engineering Freshmen’S Modelling Tasks?, Sophie Charles, Nicolas Peyret

Research Papers

This paper presents a study aiming at characterising engineering freshmen’s performance in modelling tasks, as well as the strategies they adopt to execute them, before and after taking a 3-D modelling course. 97 freshmen in a French engineering school were asked to produce 3-D models of a part, using three views and the product development platform Onshape. The accuracy of their models was assessed using geometrical, dimensional and functional criteria. The students’ performance was also investigated with regards to their modelling strategies. We characterised more specifically the strategies they adopted to constrain the overall length of the part, and pierce …

Overview Of Various Components Of Lateral Flow Immunochromatography Assay For The Detection Of Mycotoxins And Limit Of Detection In Food Samples: A Systematic Review, Vinayak Sharma, Thasmin Shahjahan, Bilal Javed, Furong Tian

Articles

The detection of aflatoxins is essential for the food industry to ensure the safety and quality of food products before their release to the market. The lateral-flow immunochromatography assay (LFIA) is a simple technique that allows the rapid on-site detection of aflatoxins. The purpose of this review is to evaluate and compare the limits of detection reported in the most recent research articles, published between the years of 2015 and 2023. The limits of detection (LODs) were compared against the particle type and particle size, as well as other variables, to identify trends and correlations among the parameters. A growing …

درجة امتلاك معلمي الجغرافيا لمهارات استخدام تقنية نظم المعلومات الجغرافية جي آي أس في المدارس الحكومية في لواء دير علا, Afaf Omar Ibrahim Albalawneh

Journal of the Association of Arab Universities for Research in Higher Education مجلة اتحاد الجامعات العربية للبحوث في التعليم العالي

هدفت المقال إلى البحث في درجة امتلاك معلمي الجغرافيا لمهارات استخدام تقنية نظم المعلومات الجغرافية (GIS) في المدارس الحكومية في لواء دير علا، تمّ توزيع الاستبانة بشكلها الإلكتروني، وتمّ استرداد (100) استبانة، اعتمدت الباحثة على المنهج الوصفي، وقامت الباحثة بتطوير أداة استبانة، وتكوّنت الاستبانة في صورتها النهائية من (19) فقرة موزعة على محورين، وأظهرت النتائج أن هناك فروقاً ذات دلالة إحصائية (0.05a=) تعزى لأثر الجنس وجاءت الفروق لصالح الذكور، هذا وأوصت الدراسة إلى ضرورة إجراء المزيد من الدراسات حول استخدام تقنية نظم المعلومات الجغرافية (GIS).

The article aimed to investigate the degree to which geography teachers possess the skills of …

Evolution Of Glassy Carbon Derived From Pyrolysis Of Furan Resin, Josh Kemppainen, Ivan Gallegos, Aaron Krieg, Jacob R. Gissinger, Kristopher E. Wise, Margaret Kowalik, Julia A. King, S. Gowtham, Adri Van Duin, Gregory Odegard

Michigan Tech Publications

Glassy carbon (GC) material derived from pyrolyzed furan resin was modeled by using reactive molecular dynamics (MD) simulations. The MD polymerization simulation protocols to cure the furan resin precursor material are validated via comparison of the predicted density and Young's modulus with experimental values. The MD pyrolysis simulations protocols to pyrolyze the furan resin precursor is validated by comparison of calculated density, Young's modulus, carbon content, sp carbon content, the in-plane crystallite size, out-of-plane crystallite stacking height, and interplanar crystallite spacing with experimental results from the literature for furan resin derived GC. The modeling methodology established in this work can …

Alca: Comparing Icelandic Aluminum Emissions To The World Through Statistical Reasoning And Programming-Based Predictive Tools, Markus Sujansky

Iceland: Climate Change and The Arctic

Aluminum production is a process that is heavily reliant on large amounts of available

energy, and therefore lends itself to locations where energy production is abundant. Iceland, as a global leader in Geothermal and Hydropower energy, has experienced an industrial boom in the past 20-30 years, quickly becoming a top 10 worldwide aluminum producer. However, although the three main companies that operate their smelting processes in the country are powered by clean energy, they still import raw materials from all over the world, with source locations ranging from Brazil to Australia. In order to find out if the long distance …

Cheiloscopy Examination And Classification Of Lip Prints With And Without Parafunctional Oral Habits: A Cross-Sectional Observation Study, Emily Smith Regan

Dental Hygiene Theses & Dissertations

Problem: Lip prints are unique and have potential for use as a human identifier. The purpose of this study was to observe possible cheiloscopy differences of individuals with and without parafunctional oral habits. Additionally, inter-rater reliability (IRR) of lip print examiners was observed. Methods: This IRB approved blinded cross-sectional observational study collected lip prints from sixty-six individuals using lipstick and adhesive tape to transfer lip prints to white bond paper for viewing purposes. Each set of included lip prints was divided into quadrants and dichotomized as those with or without an oral parafunctional habit. Each quadrant sample was manually analyzed …

Upscaling Wetland Methane Emissions From The Fluxnet-Ch4 Eddy Covariance Network (Upch4 V1.0): Model Development, Network Assessment, And Budget Comparison, Gavin Mcnicol, Etienne Fluet-Chouinard, Zutao Ouyang, Sara Knox, Zhen Zhang, Tuula Aalto, Sheel Bansal, Kuang Yu Chang, Min Chen, Kyle Delwiche, Sarah Feron, Mathias Goeckede, Jinxun Liu, Avni Malhotra, Joe R. Melton, William Riley, Rodrigo Vargas, Kunxiaojia Yuan, Qing Ying, Qing Zhu, Pavel Alekseychik, Mika Aurela, David Billesbach, David I. Campbell, Jiquan Chen, Housen Chu, Ankur R. Desai, Eugenie Euskirchen, Jordan Goodrich, Timothy Griffis, Manuel Helbig, Takashi Hirano, Hiroki Iwata, Gerald Jurasinski, John King, Franziska Koebsch, Randall Kolka, Ken Krauss, Annalea Lohila, Ivan Mammarella

Department of Agricultural and Biological Systems Engineering: Faculty Publications

Wetlands are responsible for 20%–31% of global methane (CH4) emissions and account for a large source of uncertainty in the global CH4 budget. Data-driven upscaling of CH4 fluxes from eddy covariance measurements can provide new and independent bottom-up estimates of wetland CH4 emissions. Here, we develop a six-predictor random forest upscaling model (UpCH4), trained on 119 site-years of eddy covariance CH4 flux data from 43 freshwater wetland sites in the FLUXNET-CH4 Community Product. Network patterns in site-level annual means and mean seasonal cycles of CH4 fluxes were reproduced accurately in tundra, boreal, and temperate regions (Nash-Sutcliffe Efficiency ∼0.52–0.63 and 0.53). …

Design And Implementation Of An Optimization Platform For Common Fixed Photovoltaic Systems, Amro Ahmad Zahrawi

Mechanical Engineering Theses

Most household photovoltaic (PV) panels are installed in a fixed arrangement (fixed-type) based on a rule of thumb that comes from experience. The azimuth angle is usually set facing south with a tilt angle equivalent to the location's latitude. However, research shows that this is not the best for all geographical locations and during all hours of the day. Consequently, this brings up the hypothesis that optimizing the PV system's azimuth and tilt angles would ensure that the PV panel produces the most possible output as it is adjusted to face the sun most effectively during peak sunlight hours. This …

A Review Of The Mechanical Properties Of 17-4ph Stainless Steel Produced By Bound Powder Extrusion, Jaidyn Jones, Ana Vafadar, Reza Hashemi

Research outputs 2022 to 2026

17-4PH Stainless Steel is a mechanically high-performing alloy that is widely used across chemical and mechanical processing industries. The alloy is conventionally fabricated by cast methods, but emerging additive manufacturing techniques are presently offering an economic, efficient, and environmentally friendly alternative. Bound Powder Extrusion (BPE) is a relatively new additive manufacturing technique that is used to fabricate three-dimensional, free-form components. Investigation into the mechanical properties and behavior of 17-4PH stainless steel fabricated by BPE is vital to understanding whether this technique proposes a competitive substitute to the cast alloy within industry. Published literature has investigated the as-fabricated mechanical properties, microstructure, …

Semi-Annual Progress Report #12, Missouri University Of Science And Technology. Inspire - University Transportation Center

Semi-Annual Progress Reports

No abstract provided.

Aquaculture In Hydropower Reservoirs, Racheal Macharia

Tanzania Journal of Engineering and Technology (TJET)

There is an undoubtedly existing relationship between water, energy, and food and their interaction with the natural environment and mankind. Climate change is the talk of the day in global development discussions as it intensifies water shortages, energy, poverty, food shortages, and environmental degradation. Currently, most of the hydropower dams constructed in Africa are majorly built to store water for agricultural purposes, control flooding, and generate electricity. Notable projects include the seven forks hydropower stations located on the Tana River in Kenya; Aswan high dam in Egypt; Grand Renaissance dam in Ethiopia; Kariba dam in Zimbabwe and Akosombo in Ghana. …

Mppt Dc-Dc Buck-Boost Converter For Off Grid Hybrid Solar-Wind Battery System In Ikuza Island, Tanzania, Aviti Thadei Mushi

Tanzania Journal of Engineering and Technology (TJET)

Ikuza Island in Kagera-Tanzania faces lack of electricity due to cost challenges of extending the grid by marine cables and other transmission facilities. These makes such endeavour not appealing to the supply authority due to those higher charges. Therefore, this paper undertakes to design hybrid renewable energy sources for the island by specifically focusing on the buck-boost converter for the energy conversion from these renewable resources. The design of the bidirectional buck-boost converter for maximum power point tracking in off-grid hybrid renewable energy systems is multifaceted due to the inhomogeneity nature of the renewable energy sources. The bidirectional buck-boost converter, …

Designing A Cylindrical Capacitive Based Sensor For Monitoring The Table Salt’S Moisture Content During Iodization, Mwajuma Lungo

Tanzania Journal of Engineering and Technology (TJET)

Coaxial cylinder capacitive moisture sensor for determination of moisture content of table salts has been fabricated. The CMS method for determination of moisture content of table salts overcomes the effect of evaporation of iodine in table salt which results from heating in the oven drying method. The CMS overcomes the polarization effect result from the resistive methods of moisture content determination and it is non expensive to construct and it has high accuracy since measurements involves programming system in interpretation of the results. In this research, moisture content sensor based on capacitive principal created using two coaxial cylinders with height …

Assessing Spatio-Temporal Variations And Trends Of Rainfall Over Somalia From 1991 To 2020, Paul Ts Limbu Sr

Tanzania Journal of Engineering and Technology (TJET)

This study aims to examine the spatiotemporal variability and trends of rainfall over Somalia using the Mann-Kendall (MK) test and Sen’s slope estimator to investigate the trend and magnitude of the rainfall changes and the arithmetic mean and coefficient of variation (CV) to examine the rainfall variability. To achieve this aim, the gridded monthly satellite rainfall datasets from Climate Hazards Group InfraRed Precipitation with Station (CHIRPS) for the period between 1991 and 2020 were used. Results show that annual rainfall generally exhibits bimodal rainfall distribution, March to May (Gu) and September to November (Deyr), though southern coastal regions receive extended …