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Displaying results 4051 - 4080 of 13081 in total
Conference Session
Preparing Engineering Students for Their Professional Practice
Collection
2021 ASEE Virtual Annual Conference Content Access
Authors
Russell Korte, George Washington University; Saniya Leblanc, George Washington University
Tagged Divisions
Educational Research and Methods
Mechanical and Aerospace Engineering at The George Washington University. Her research goals are to create next-generation energy conversion technologies with advanced materials and manufacturing techniques. Previously, she was a research sci- entist at a startup company where she created research, development, and manufacturing characterization solutions for thermoelectric technologies and evaluated the potential of new power generation materials. Dr. LeBlanc also served in Teach for America and taught high school math and physics in Washington, DC. Dr. LeBlanc obtained a PhD in mechanical engineering with a minor in materials science at Stanford University where she was a Diversifying Academia Recruiting Excellence
Conference Session
Design Tools and Methodology I
Collection
2012 ASEE Annual Conference & Exposition
Authors
Daniel D. Jensen, U.S. Air Force Academy; John J. Wood, U.S. Air Force Academy; Philip Knodel, U.S. Air Force Academy; Kristin L. Wood, University of Texas, Austin; Richard H. Crawford, University of Texas, Austin; Robert Vincent, U. S. Air Force Academy
Tagged Divisions
Design in Engineering Education
device to shell peanuts. During the second time period, a secondteam member combined and added detail to the original set of ideas. Figure 9. Example results from a first and second round of 6-3-5.3.2 Popular Science/Popular Mechanics Based Concept GenerationOur development and implementation of the Popular Mechanics/Popular Science (PM/PS) (see Page 25.586.10Fig. 10) technique was based on two assumptions: 8 1. Students are not familiar with emerging technologies that might be directly applicable to their design. 2. Exposing the students to emerging, innovative technologies will
Conference Session
NSF Grantees Poster Session
Collection
2004 Annual Conference
Authors
Victor Giurgiutiu; David Rocheleau; Jed Lyons
paper discusses the interfacing between themicrocontroller and the various electro-mechanical sensing and actuation components used in amechatronics project. The use of functional modules for teaching interfacing skills to non-EEstudents is described and exemplified. The paper finishes with conclusions and further work.INTRODUCTIONTHE NEED FOR MECHATRONICS EDUCATIONDue to the accelerated growth of electronics, computers and information technology industries, agap has emerged between the teachings of traditional non-EE engineering education (e.g.,Mechanical Engineering, Civil Engineering, Chemical Engineering, etc.) and the skills expectedof non-EE graduates entering the job market. A recent job announcement for hiring a mechanicalengineering
Collection
2013 Spring ASEE Middle Atlantic Section Conference
Authors
Andy S. Zhang; Ali Harb; Iem Heng; Farrukh Zia; Alex Wong
Farrukh Zia iheng@citytech.cuny.edu fzia@citytech.cuny.edu NYC College of Technology NYC College of Technology 186 Jay Street Brooklyn, NY 11201 186 Jay Street, Brooklyn NY 11201Abstract: This paper discusses the use of microcontrollers from Digilent Inc. to engageundergraduate students in researches on mechatronics design and applications through hands-ondesign projects. Mechatronics technology has been identified as the top ten emerging technologyof the 21st century. Almost all high tech products made in today are mechatronics products innature on which microcontrollers are embedded into the products to function as the brain of
Collection
2001 Annual Conference
Authors
Sarah Irvine; Mary Anne Lesiak; Andrea Prejean; Teresa Larkin-Hein
intoeducation may only support instructions and techno-centrism. Educational Internet resourceswill change this approach by allowing students some degree of autonomy in choosing their pathof learning via computers. The Internet alone cannot produce “good” learning, however “good”learning can occur through successful implementation of the Internet11.The need for professional development opportunities related to the emergence of newtechnologies is well documented12 - 17. Furthermore, it is imperative that technology be groundedusing a "scholarly" approach to teaching18. Within this "scholarly" approach is the need tounderstand the different ways people learn as well as differences in their learning styles19 - 25.The over-riding goal of the “Constructing
Collection
2018 ASEE Conferences - Conference for Industry and Education Collaboration / San Antonio proceedings
Authors
Xiumin Diao; Jin Hu; Yuxin Liang
initiative to promote thetransformation of student learning experience in the manufacturing engineering technologyprogram in the School of Engineering Technology at Purdue University. The roboticmanufacturing system supports various applications of digital manufacturing by integrating bothtraditional subtractive manufacturing approaches and emerging additive manufacturing ones(e.g., 3D printing) in a novel way. Such a multi‐ functional robotic manufacturing system makesit a perfect platform for students not only to creatively learn and apply all kinds of existingmanufacturing technologies, but also to actively explore new and better solutions formanufacturing problems in their team‐ based interdisciplinary undergraduate research. Withsuch an
Conference Session
Project-based Learning and Other Pedagogical Innovations
Collection
2010 Annual Conference & Exposition
Authors
John Cressler, Georgia Tech
Tagged Divisions
Multidisciplinary Engineering
willcollectively engage in a brief (no more than 15-20 minutes), informal discussion on a relevanttopic. The goal is for students to muse a bit and formulate some thoughts in advance, and beready to add something meaningful to the class conversation. The intent is to identify thesetopics and hand them out during the preceding lecture (with the appropriate reference material),so that students can give some prior thought to them. Students are also free to suggest topics theywould like to collectively probe.Example Discussion Thread Topic:“It has been recently argued that the use of digital technology, Information Age gadgets, andother pieces of transistor-enabled toys, are physically re-wiring the brains of “digital natives” –ummm, you guys. Agree? Disagree
Conference Session
Refining Manufacturing Education Practices
Collection
2024 ASEE Annual Conference & Exposition
Authors
Christoph Johannes Sielmann P.Eng., University of British Columbia, Vancouver; Casey James Keulen, University of British Columbia, Vancouver; Abbas Hosseini, University of British Columbia, Vancouver
Tagged Divisions
Manufacturing Division (MFG)
-cohortcommunication. In this method, cohorts of students are clearly defined, where groups of studentsare identified by the campus or classroom where they synchronously experience the course [4],[5].Although this teaching method brings several advantages to the multi-campus system, such asleveraging the special expertise of faculty members in different campuses and bridging the culturalboundaries [6], it poses challenges [7], specifically in its implementation. Ensuring equity andfairness in teaching between cohorts and establishing rapport between the instructor and the remotecohort are examples of these challenges [2]. Furthermore, challenges related to information andcommunication technology (ICT) have a critical impact on the successful implementation of
Collection
2003 GSW
Authors
Jeanne M. Gerlach; Bill D. Carroll
emerging technology.6. The beginning engineering teacher understands the concept of teaming.7. The beginning engineering teacher has a knowledge of the interdisciplinary nature of math and scienceinstruction to contextualize theory and extend knowledge to solve practical engineering problems.8. The beginning engineering teacher understands the impacts of engineering and technology on globalsociety.9. The beginning engineering teacher has knowledge of specific career fields in engineering andtechnology including the impact of professional and student engineering organizations in careerdevelopment.10. The beginning engineering teacher has the knowledge and skills to instruct students in the use ofappropriate tools, equipment, and technology used in
Collection
2011 Fall ASEE Middle Atlantic Section Conference
Authors
Ramesh K . Agarwal
, Finnish environmental economist • It is estimated that 70% of a product’s environmental impact is locked in at the design stage.Key Principles of DfS • Efficient design - keep the material and resource inputs (energy in particular) to a minimum. • Cyclic design - design to enable materials to be continuously cycled through natural or industrial systems. • Safe design - avoid toxic and hazardous substances and processes. Keep human health in mind as well as ecological impacts. • Communications design - ensure product and packaging related communications are informative and accurate. Encourage responsible consumer behaviour.Example: Sustainable Transportation • Technologies for
Conference Session
NSF Grantees Poster Session
Collection
2022 ASEE Annual Conference & Exposition
Authors
Royce Francis, The George Washington University; Marie Paretti, Virginia Polytechnic Institute and State University; Rachel Riedner
tension between professional loyalty to their technicalcommunity, and their professional and economic allegiances to their firms. Consequently, it isnatural for engineering practitioners to continually negotiate multiple, potentially conflictingidentities. These identities may intersect most consequentially in the myriad decision makingsituations faced as engineers scope projects or problems, design solutions, communicaterecommendations, or identify new markets or opportunities for technologies The engineeringdisciplines are manifestly rigorous in their application of scientific principles, and theseprinciples are the ones most directly addressed in undergraduate engineering classrooms.However, engineers are also called to make decisions that
Collection
2024 ASEE North East Section
Authors
Robin Chataut, Quinnipiac University; YUSUF USMAN, Quinnipiac University; Frederick Scholl, Quinnipiac University
. This plan should outline the steps to take in the eventof a data breach, including how to contain the breach, assess the damage, notify affected parties,and prevent future incidents. This proactive planning can significantly reduce the damage a cyberincident may cause and ensure business continuity.Looking ahead, the way we use technology is going to change, and this will affect how safe weare online. More devices connecting to the internet and faster internet speeds will mean morechances for hackers to try and steal information. The proliferation of Internet of Things (IoT)devices, the expansion of 5G networks, and advancements in artificial intelligence (AI) willlikely create a broader attack surface for cybercriminals. The integration of
Conference Session
Advances in Assessment of Communication and Interdisciplinary Competence
Collection
2012 ASEE Annual Conference & Exposition
Authors
Lisa R. Lattuca, University of Michigan; David B. Knight, Pennsylvania State University, University Park; Inger M. Bergom, University of Michigan
Tagged Divisions
Liberal Education/Engineering & Society
). These low values indicate that the nine scales are indeedproviding different information, as they tended not to co-vary with one another. Focusing on thethree interdisciplinary competence scales, we note that the highest correlation coefficient is .419between Interdisciplinary Skills and Recognizing Disciplinary Perspectives, indicating thedistinctiveness of the three different dimensions of interdisciplinary competence from oneanother. The emergence of the same three factors from two separate populations of students (thePenn State pilot test and the 31-institution full sample) lends further support for the claim that the Page
Collection
2004 GSW
Authors
Puneet Bhatia; Dr. Terrence. L Chambers
beginning of Computer-Aided Design (CAD). Inindustry, engineers extensively use both CAD and CAM but there is very little communicationbetween the two. Computer-Aided Process Planning emerged as the communicationagent between CAD and CAM. The CAPP system solves planning activities, such asselection of cutting tools, determining calculations of cutting parameters, tool path planning,generation of NC part programs, etc. Process PlanningRequicha and Vandenbrande [1988] describe process planning in the following way, "Aprocess planner and a set-up planner (often the same person) examine a part's blueprintand consult various files and handbooks to produce specifications and information onfixtures and clamping
Conference Session
College Industry Partnerships Division (CIP) Poster Session
Collection
2023 ASEE Annual Conference & Exposition
Authors
Jacalynn Sharp, JHU APL; Julianne Burroughs; Jorge Luis Rivera; Aishwarya Jayabharathi; Katherine-Ann Carr; William Roberts Gray-Roncal; Danielle Patrice Hilliard, Johns Hopkins University, Laurel; Alberto J. De Jesus Santiago
Tagged Topics
Diversity
Tagged Divisions
College Industry Partnerships Division (CIP)
,and professional networking opportunities, while gaining direct access and exposure to over 30technical staff members, including 16 day-of volunteers/mentors, 10 technical talk speakers, and8 gallery walk judges. A majority of the intern participants (over 85%) attended technical talksand gained exposure to cutting edge technologies and relevant topics (including hypersonics,natural disaster response, anti-gravity machines, and 5G networks). Many of these interactionsdirectly informed the students’ project brainstorming sessions and eventual final proposals.Students who responded to the survey stated that they met and interacted with on average three ormore staff outside of technical talks and approximately 46% stated their confidence
Conference Session
Student Division Technical Session 2: Career Development and Employability
Collection
2024 ASEE Annual Conference & Exposition
Authors
Ella Kokinda, Clemson University; Makayla Moster, Clemson University; D. Matthew Boyer, Clemson University
Tagged Topics
Diversity
Tagged Divisions
Student Division (STDT)
helps start a path of self-advocacy and fosters a supportivecommunity.We believe that community support is vital in the graduate school experience. Communitysupport can provide a sense of belonging, encouragement, and collaboration that can translate toacademic and personal success through exposure to diversity, networking, and mentorship. PostCOVID-19, we experienced a severe decline in graduate student community that struggles tore-emerge and fails to maintain momentum despite effort. Understanding how communitysupport structures are used by and maintained by graduate students can help inform others onways to rebuild, strengthen, and find their personal community structures.Overall, we want to give a holistic outline and overview of the first
Conference Session
Assessment of Engineering Leadership Development
Collection
2018 ASEE Annual Conference & Exposition
Authors
Denise Rutledge Simmons P.E., Virginia Tech; Nicholas Anthony Clegorne; Cassandra J McCall, Virginia Tech
Tagged Divisions
Engineering Leadership Development
. While an initial profile of faculty perceptions of leadership couldbe identified from the data, few patterns emerged that could serve as relational indicators acrossdimensions, revealing nuance among items that warrant further exploration. Subsequentinterviews, as informed by this preliminary study, will further explore topics such as perceptionsof faculty role in teaching leadership and effective sources of faculty leadership education anddevelopment; and contribute to ongoing conversations surrounding faculty beliefs andpedagogical content and practice.AcknowledgementsThe authors gratefully acknowledge the National Science Foundation for supporting this workunder award no. 1463802. Any opinions, findings, conclusions, or recommendations
Conference Session
ME Curriculum and Assessment
Collection
2014 ASEE Annual Conference & Exposition
Authors
Christopher E. Larsen, University of Missouri; Rose M. Marra Ph.D, University of Missouri, Columbia; Nai-En Tang; David H. Jonassen, University of Missouri, Columbia; Robert Andrew Winholtz
Tagged Divisions
Mechanical Engineering
Paper ID #8462The Goldilocks Continuum: Making the case for an optimal balance of in-structional strategy in mechanical engineering collaborative learningChristopher E. Larsen, University of Missouri Christopher Larsen is currently a student in the doctoral program at the University of Missouri’s School of Information Science and Learning Technologies. He has worked for many years with the Department of Defense as an instructional systems designer, and has written several technical manuals on leadership and small unit tactics. Christopher’s interests include problem-based learning and leadership development.Rose M Marra Ph.D
Conference Session
IE and EM Program Innovation
Collection
2007 Annual Conference & Exposition
Authors
Thomas Duening, Arizona State University
Tagged Divisions
Engineering Management
Systems Management(ESIM). As it will be defined by this program, ESIM will cover a wide range of competenciespertinent to enterprise systems at all levels, including: • Management and human resource systems • Organizational design and structure • Decision making and strategy setting • New product/service development • Project management • Production and operations • Information technologies and expert systems • Financial and accounting systemsTo accommodate this range of ESIM opportunities within the enterprise, the following core andelective curricula are proposed:Required Core:FSE 598 Introduction to Strategic Enterprise InnovationThis course introduces students to the varieties of innovation that occur across
Conference Session
Governance, Diplomacy, and International Comparisons in Engineering Education
Collection
2021 ASEE Virtual Annual Conference Content Access
Authors
Yi Cao, Virginia Polytechnic Institute and State University; Xiaoye Ma, Tsinghua University; Jennifer M. Case, Virginia Polytechnic Institute and State University; Brent K. Jesiek, Purdue University at West Lafayette ; David B. Knight, Virginia Polytechnic Institute and State University; William C. Oakes, Purdue University at West Lafayette; Marie C. Paretti, Virginia Polytechnic Institute and State University; Xiaofeng Tang, Tsinghua University; Zheping Xie, Tsinghua University; Haiyan Zhao
Tagged Topics
Diversity
Tagged Divisions
Liberal Education/Engineering & Society
competitiveness of the nationalengineering workforce in comparison to major global players coupled with the calls forinnovation in engineering education, also parallels the logic that drove The Engineer of 2020report and its intended outcomes.Visions of Engineers and Engineering Education for the FutureAccording to the Pathways report, the required competency for future engineers is shaped by thedevelopmental trends of engineering practice, the needs of employers, as well as engineers’active demand in assuming leadership in efforts to build a sustainable and socially just future. Tobegin with, the report notes emerging changes in engineering practice, propelled by “rapidadvances in many fields of science and technology.” These emerging changes, suggests
Conference Session
DISTINGUISHED LECTURE: 2020 Best PIC and Zone Papers
Collection
2021 ASEE Virtual Annual Conference Content Access
Authors
Shuvra Das, University of Detroit Mercy; Darrell K. Kleinke P.E., University of Detroit Mercy; David Pistrui, University of Detroit Mercy
Tagged Topics
ASEE Board of Directors
drawing skills were replaced by CAD, andcalculators and computers replaced slide rules. But there was hardly any change in theparadigm. Classrooms have remained teacher centric, learning in classrooms is overwhelminglya passive exercise, and standardization of curriculum and testing continues to remain the order ofthe day. Driven by the needs of Industry 4.0 and associated speed of technological change,conversation has started in many concerned circles about the future of work and future ofeducation. What should Education 4.0 look like? Here are some relevant quotes from recentpublications.“The emerging technologies have huge effect on the education of people. Only qualified andhighly educated employees will be able to control these technologies
Conference Session
Liberal Education/Engineering & Society Division (LEES) Technical Session 8: Communication and Liberal Education
Collection
2025 ASEE Annual Conference & Exposition
Authors
Catherine Woodworth Wong, University of New Hampshire; Cynthia Helen Carlson PE, PhD, Merrimack College
Tagged Divisions
Liberal Education/Engineering & Society Division (LEES)
additional information on plain language.The MedlinePlus reference in particular, is relevant to the Environmental Engineering course, asthe course deals with management of water quality, wastewater, hazardous waste, air quality, etc.Many of the students’ research projects are related to public health issues. Also, the MedlinePlus“Health Information in Multiple Languages” [27] web document provides good examples ofplain language documents as well as plain language resources written in various languages, manyof which pertain to engineering such as carbon monoxide generator and furnace safety,decontamination, lead poisoning, radiation emergencies, child safety, disaster preparation andrecovery, as well as emergency planning including sections specific
Conference Session
College Industry Partnerships Division Technical Session 2
Collection
2022 ASEE Annual Conference & Exposition
Authors
Stephanie Ivey, The University of Memphis; Aaron Robinson, The University of Memphis; Katie Bowman, The University of Memphis
MemphisApprenticeship Pathway Program, led by the Southwest Tennessee Community College (STCC).The University of Memphis is the primary partner of STCC and has a focus on engineering whileSTCC concentrates on cyber security and information technology disciplines. The unifyingtheme across the project is that of transformative technologies. The goal of the four-year projectis to engage at least 800 students in project activities. Participants will include not only studentsat STCC and University of Memphis, but also students at other institutions as the model isreplicated in year 4. The model includes pathways for students through community college anduniversity degrees, related work-based learning experiences, and mentoring as shown in Figure1.The EAP features a
Collection
2024 ASEE-GSW
Authors
Lance Leon Allen White, Texas A&M University; Trini Balart, Texas A&M University; Kristi J. Shryock, Texas A&M University; Karan Watson P.E., Texas A&M University
. IntroductionGenerative Artificial Intelligence (GAI) has begun to saturate our world. In November of 2022, thewide release of Open AI’s ChatGPT initiated a snowball effect of GAI implementation in manysectors. Simple online searches are now supplemented with Google’s Bard AI and MicrosoftCopilot. Open AI’s ChatGPT chat bot began as a free service but now includes a myriad ofadditional paid functionalities, and more niche solutions are emerging from companies like Adobe intheir creative suites and Microsoft in their office suite. GAI as a pervasive disruptive technology isfar from full maturation, and it will continue to exist in our digitally influenced world indefinitely. Inrecent technological history, disruptions have been a hallmark of a healthy tech
Conference Session
NSF Grantees Poster Session
Collection
2021 ASEE Virtual Annual Conference Content Access
Authors
Susannah C. Davis, University of New Mexico; Nadia N. Kellam, Arizona State University; Vanessa Svihla, University of New Mexico; Bala Vignesh Sundaram, Arizona State University, Polytechnic campus; Jemal Bedane Halkiyo P.E., Arizona State University
Tagged Topics
NSF Grantees Poster Session
practices and policies that were uncovered during analysis of the structural lens:● Hiring, tenure, review of papers/grants● Formal and informal policies/norms related to division of resources (e.g., grad student/postdoc assignments)● Engrained policies/norms related to rank, e.g., work assignments/division of labor (administrative vs. more visible and rewarded work)● Evidence of root structures (assumption of policy): Symbolic/symbols/classroom assignments/schedules (e.g., large paintings of deans on the wall that cannot be removed)Cultural Lens: Within the experiences of our participants as part of a RED leadership team, therewere many cultural aspects that emerged. While the participants did not speak specifically aboutculture, culture did
Collection
2023 ASEE GSW
Authors
Daniel Bang; Saira Anwar; Syeda Fizza Ali; Alejandra Magana
, Texas A&M University College Station, TX, USA Alejandra Magana W.C. Furnas Professor in Enterprise Excellence, Computer and Information Technology and Professor, Engineering Education, Purdue University West Lafayette, IN, USA AbstractThe Interactive, Constructive, Active, and Passive (ICAP) Framework describes levels of students'engagement based on the in-class activities with more positive experiences leading to moreengagement and learning. The ICAP framework hypothesizes that students involved in interactiveactivities are more likely to be better engaged than students who
Conference Session
Mathematics Division Technical Session 1
Collection
2015 ASEE Annual Conference & Exposition
Authors
Angela Minichiello, Utah State University; Ted Campbell, Utah State University; Jim Dorward, Utah State University; Sherry Marx, Utah State University
Tagged Divisions
Mathematics
thebarriers) based upon available information and machine technology and common principles ofcognitive science improved student learning in an undergraduate electrical and computerengineering class (p. 331). They used this evidence to argue for instructional innovations thatare generalizable rather than discipline specific, scalable rather than comprehensive, and easy toimplement rather than resource-intensive (p. 332). While Seymour25 acknowledged that evidence of improved student learning (e.g., Butler 4et al. ) is commonly considered a “necessary condition” for transfer of research-basedinstructional innovations to practice in STEM, she suggested that this evidence may not, of itself,be “sufficient” when considering the adoption
Conference Session
NSF Grantees’ Poster Session
Collection
2015 ASEE Annual Conference & Exposition
Authors
Kathryn W. Jablokow, Pennsylvania State University, Great Valley; Senay Purzer, Purdue University, West Lafayette; Daniel Michael Ferguson, Purdue University, West Lafayette; Matthew W. Ohland, Purdue University and Central Queensland University; Jessica Menold Menold, Pennsylvania State University, University Park
Tagged Topics
NSF Grantees Poster Session
was Associate Director of the Inter-professional Studies Program and Senior Lecturer at Illinois Institute of Technology and involved in research in service learning, assessment processes and interventions aimed at improving learning ob- jective attainment. Prior to his University assignments he was the Founder and CEO of The EDI Group, Ltd. and The EDI Group Canada, Ltd, independent professional services companies specializing in B2B electronic commerce and electronic data interchange. The EDI Group companies conducted syndicated market research, offered educational seminars and conferences and published The Journal of Electronic Commerce. He was also a Vice President at the First National Bank of Chicago, where
Conference Session
Concurrent Paper Tracks Session I Curriculum
Collection
2016 ASEE International Forum
Authors
David W. Gatchell PhD, Northwestern University; Robert A Linsenmeier, Northwestern University; Robert L. Murphy, Northwestern University; Akinwale Oladotun Coker P.E., university of ibadan; Akinniyi A. Osuntoki, University of Lagos, Lagos, Nigeria
Tagged Topics
International Forum
is to train post graduates from Nigerianbusiness schools to scale-up development of, and launch, new healthcare practices. Byparticipating in the Kellogg Field Studies program these graduates will learn how to inform thedesign and development of innovative medical technologies for developing countries as well ashow to train students to collect and analyze information by interviewing and/or observing keyindividual and organizations. The Kellogg Field Studies program is innovative in that it not onlyconsiders potential end-users of medical technologies, but also those stakeholders that approve,finance, procure, distribute and maintain these technologies. These stakeholders include:  Healthcare providers;  National and regional
Collection
2017 ASEE Midwest Section Conference
Authors
Tammy Lutz-Rechtin; Edgar Clausen
model program, shown in this paper, may be used by other engineering departments indeveloping similar safety programs, thereby assuring that safety training is a significant part ofengineering/engineering technology/STEM education.KeywordsSafety, safety training, departmental safety programIntroductionOver the past ten years, institutions of higher learning have become increasingly aware of theneed to realign aspects of research safety (Hill 2016, ACS 2012, Benderly 2016). Severalincidents illustrate the immediate need for a different approach to safety such as the death of alab assistant at UCLA in 2008 (Kemsley 2009), a severe student injury at Texas Tech in 2010(Kemsley 2010), and a lab explosion resulting in the loss of an arm at the