ABSTRACT
Our world has been permanently changed by the pandemic outbreak of COVID-19 starts around the end of 2019. In the first few months of 2020, the whole world was in urgent need of an effective, easy, and quick method for the identification of the infection of the new virus. Polymerase Chain Reaction (PCR) machine, which can test DNA samples by rapidly making millions of copies of a specific DNA sample through the PCR process, including the COVID-19 virus, can perfectly fit this demand. In this study, a design project on PCR is introduced for undergraduate education in electrical and mechanical engineering. The objective of this project is to develop a low-cost, ease-of-use, wallet-size, portable real-time PCR (RT-PCR) machine for accurate testing of various bacteria or viruses. The key function of the PT-PCR system is to precisely control and maintain the temperature of the bio-sample solution within a range between 55℃ and 95℃. The RT-PCR system is centrally controlled by a microcontroller Raspberry Pi 3. It receives temperature measurements from thermistors and operates the heating lid, the thermoelectric module, and the cooling fan to regulate the temperatures required in repetitive thermal cycles. This project provides students opportunities in studying and practicing a wide range of engineering technics and skills, including mechanical design, electronics design, microcomputer programming, system control, power electronics, sensors and actuators, data acquisition and processing, cellphone app development. Students can gain comprehensive understanding of the design of multiphysics system after they overcome various challenges emerging in the project. From the view of engineering education, the process of this project development has demonstrated the importance and benefits of adopting complex interdisciplinary engineering problems for student teams to solve, especially those involve contemporary issues. Copyright 2022. © by the International Institute of Informatics and Systemics. All rights reserved.
ABSTRACT
The challenges associated with achieving hypersonic flight, developing advanced propulsion systems, and designing reusable launch platforms are strongly interdisciplinary. Exposing undergraduate students to interdisciplinary research is recognized as a means to equip society's future engineers and scientists with the broad skillset necessary to contribute to these areas. The jointly funded NSF-DoD REU site Advanced Technologies for Hypersonic Propulsive, Energetic and Reusable Platforms (HYPER) unites multidisciplinary interests to study advanced structures and systems with application to hypersonics, space, propulsion, and energy. Over the course of two 10-week summer sessions (2019 and 2021), participants have gained hands-on training in contemporary challenges such as: (1) utilizing advanced manufacturing techniques for high-value components, (2) integrating in situ monitoring of stress-strain evolution, (3) developing novel methods for improved internal cooling and heat transfer effectiveness, (4) mitigating flutter through advanced rotor dynamic control, etc. Eleven research projects have been crafted to engage students in PhD-level topics. Many of these challenges rely on approaches that cut across disciplines and research techniques (e.g., experiments and computer simulation). The present reporting serves as a synopsis of challenges, advances, and lessons learned conducting the research thus far. The site HYPER has six core objectives that relate to: (1) preparing students for graduate school and/or research-oriented careers, (2) fostering technical skills in student participants, (3) improving participants' communication skills, (4) marketing to and recruiting a diverse group of participants, and more. Assessment of the program outcomes according to these objectives are reported here with data gathered after two years. Program outcomes were conducted with an external evaluator affiliated within the University of Central Florida's Program Evaluation and Educational Research Group (PEER). Results demonstrate a very effective site with strongly positive outcomes for all participants. Insights are provided so this research effort may be confirmed by other independent sites. It should be noted that the 2020 session was postponed out of an abundance of caution based on the uncertain and evolving conditions facilitated by the COVID-19 pandemic. © American Society for Engineering Education, 2022.
ABSTRACT
In addition to being an employment requirement for in-service high school educators, professional development (PD) workshops in STEM fields are vital for keeping up with new innovations in both theory and practice. Integrating cross-cutting engineering concepts into a PD STEM program provides a unique opportunity for both teachers and students. Students gain a deeper understanding of individual concepts and the relationship among the components of STEM. Teachers benefit from demonstration of how this integration of concepts can be practically carried out in their classrooms. The goals of the PD institute were to 1) integrate industrial technology, engineering technology and computer science constructs into core math and science high school curriculum (Physical Science, Biology, Chemistry and Physics);2) advance teacher knowledge in the core science subjects with emphasis on misconceptions;3) introduce/reinforce the engineering design process;and 4) due to COVID-19 constraints, to introduce teachers to online simulation platforms for at-home and in-class discovery of scientific concepts. Delivered as a six-day workshop in Summer 2020, the PD institute continued throughout the school year to offer continued support and form a Professional Learning Community (PLC). Due to restrictions from COVID-19, the entire workshop was delivered virtually and instruction was offered to assist with remote delivery of classes and science labs in the upcoming school year. The program covers multidisciplinary engineering science and education technology topics including misconceptions in physical science, misconceptions in biological science, visual programming, CAD and 3D printing, electrical circuit simulation, and overview of online teaching technologies. In addition to instruction and continuing education credit, the teachers received classroom materials to support them in delivering these STEM contents in their schools including a 3D printer for each participating school. This paper represents the current work in progress as part of a comprehensive initiative, which also includes a ten-day summer program for high school students, to serve diverse students and educators from underrepresented communities. © American Society for Engineering Education, 2021
ABSTRACT
The experience of delivering a STEM focused summer program to pre-college students is not novel, however, in the midst of the COVID-19 pandemic, the choice to offer such a program virtually to a diverse underrepresented population of 9-12th graders in rural Louisiana posed a great opportunity to reach an otherwise underserved segment of the population. This however is not without unique challenges. The ten-day summer program included applications of engineering principles across disciplines in a virtual setting. The program consisted of 8 different modules as daily themed mini-camps covering the areas of mechatronics, CAD & 3D printing, cyber security, biological sciences, physical science, architectural design, environmental engineering, and chemical engineering. Through several hands-on activities and interactive simulations, students practiced many engineering concepts including the engineering design process, drafting and 3D modeling, energy conversions, sustainability and clean energy, microcontroller coding, and internet security. This program was one segment of a comprehensive on-going initiative to serve students and educators from underrepresented communities which also includes a professional development program for in-service STEM educators. The program for educators is ongoing and is designed to provide them with the tools and experiences that are necessary to offer continued support and specific instruction to their students at their local schools. This paper will serve as an investigation of such a program and detail both the delivery and specific challenges encountered as well as discuss the solutions that were implemented and lessons learned. © American Society for Engineering Education, 2021
ABSTRACT
The experience of delivering a STEM focused summer program to pre-college students is not novel, however, in the midst of the COVID-19 pandemic, the choice to offer such a program virtually to a diverse underrepresented population of 9-12th graders in rural Louisiana posed a great opportunity to reach an otherwise underserved segment of the population. This however is not without unique challenges. The ten-day summer program included applications of engineering principles across disciplines in a virtual setting. The program consisted of 8 different modules as daily themed mini-camps covering the areas of mechatronics, CAD & 3D printing, cyber security, biological sciences, physical science, architectural design, environmental engineering, and chemical engineering. Through several hands-on activities and interactive simulations, students practiced many engineering concepts including the engineering design process, drafting and 3D modeling, energy conversions, sustainability and clean energy, microcontroller coding, and internet security. This program was one segment of a comprehensive on-going initiative to serve students and educators from underrepresented communities which also includes a professional development program for in-service STEM educators. The program for educators is ongoing and is designed to provide them with the tools and experiences that are necessary to offer continued support and specific instruction to their students at their local schools. This paper will serve as an investigation of such a program and detail both the delivery and specific challenges encountered as well as discuss the solutions that were implemented and lessons learned. © American Society for Engineering Education, 2021