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Displaying results 301 - 330 of 1484 in total
Conference Session
K-12 Engineering Resources: Best Practices in Curriculum Design, Part 2 of 2
Collection
2014 ASEE Annual Conference & Exposition
Authors
Kristin M Brevik, The University of North Dakota; Bradley Bowen, North Dakota State University; Frank M. Bowman, University of North Dakota; Kristi Jean, North Dakota State College of Science
Tagged Divisions
K-12 & Pre-College Engineering
Paper ID #9885You’re Hired! Changing Students’ Attitudes Towards EngineeringKristin M Brevik, The University of North Dakota Kristin Brevik is a graduate student in the Department of Chemical Engineering at the University of North Dakota. She received her B.S. from Minnesota State University Moorhead in Physics. Her research focus is in STEM education and project design.Dr. Bradley Bowen, North Dakota State University Bradley Bowen is an assistant professor at North Dakota State University. He has a duel appointment with the Teacher Education Department and the Department of Construction Management and Engineering. He
Conference Session
Assessment in Construction Education
Collection
2014 ASEE Annual Conference & Exposition
Authors
Ihab Mohammad Hamdi Saad P.E., Northern Kentucky University
Tagged Divisions
Construction
Paper ID #10842Mapping the curriculum around student learning outcomes and assessmentof learningDr. Ihab Mohammad Hamdi Saad P.E., Northern Kentucky University Dr. Ihab Saad is Department Chair and Professor of Construction Management and an alumnus of the University of Kentucky in Lexington where he received his Ph.D. in 1996 from the department of Civil Engineering and Construction. He has over 25 years of experience in the construction industry primarily in the civil/construction project management area. Dr. Saad received his Bachelor of Science and Master’s degrees in Civil Engineering from Cairo Uni- versity in
Conference Session
NSF Grantees’ Poster Session
Collection
2014 ASEE Annual Conference & Exposition
Authors
Mahender Mandala, HERL/VAPHS; Mary R. Goldberg, University of Pittsburgh; Jon Pearlman, Human Engineering Research Labs
Tagged Topics
NSF Grantees Poster Session
Tagged Divisions
Division Experimentation & Lab-Oriented Studies
Administrative and Policy Studies of Education with an expected completion of fall 2013 focusing on measuring the effectiveness of online training related to assistive technology.Dr. Jon Pearlman, Human Engineering Research Labs Jon Pearlman, PhD, received his BS in Mechanical Engineering from the University of California at Berkeley and his M.Sc. in Mechanical Engineering from Cornell University with a focus in Biomechanics and his PhD in Rehabilitation Science and Technology at the University of Pittsburgh. His research centers on Assistive Technology Product development and quality control. Related to these topics, Dr. Pearlman has several assistive technology design and development projects which are funded through the VA
Conference Session
NSF Grantees’ Poster Session
Collection
2014 ASEE Annual Conference & Exposition
Authors
Nikunja Swain P.E., South Carolina State University
Tagged Topics
NSF Grantees Poster Session
Tagged Divisions
Division Experimentation & Lab-Oriented Studies
and Pell Grant. Project DescriptionUniversity XYZ is the only public, historically black college and university of state XYZ, seeks torecruit and provide scholarships to academically talented students with financial need majoring inComputer Science and Engineering Technology. The scholarship program will target 20 XYZ stateresidents from underrepresented minority (URM) groups. Technology companies are facing a commonchallenge: finding a diverse, well-trained workforce. Enrollment of minorities and women in computerand engineering disciplines in the United States is well below other ethnic and gender groups whencompared to their percentages in the general population. Enrollment trends that have been
Conference Session
Structural Education Topics in Architectural Engineering
Collection
2014 ASEE Annual Conference & Exposition
Authors
James B. Guthrie, California Polytechnic State University; Pamalee A. Brady, California Polytechnic State University
Tagged Divisions
Architectural
careers as projectleaders they will better understand structural engineering systems and principles. The newARCE 315 has been developed over the last year in consultation with the ARCH and CMdepartments. The challenge has been to select the appropriate mix of content from the twooriginal courses to include in the new ARCE 315. This course was taught for the first time in FallQuarter 2013; its organization and content are being adjusted based on lessons learned.This work in progress paper will present the background of the original five course sequence andthe recent changes, the learning outcomes and content developed for the new ARCE 315, the twostudent projects through which the course contents were applied, and the lessons learned in
Collection
2014 ASEE Zone 1 Conference
Authors
Moijue Kaikai; Erin D. Baker
, discussions, and oralinterest solving energy issues, and spread awareness across their presentations; and to improve student skills in critical thinkingown communities. and problem solving, especially engineering problem solving, Keywords—renewable; sustainable; curriculum; and sharpen student skills in math and science. The variouseducation; energy; awareness; lesson plans; wind lessons plans are framed around a hands-on wind turbine project to achieve these objectives. I
Conference Session
Entrepreneurship & Engineering Innovation Division Technical Session 6
Collection
2014 ASEE Annual Conference & Exposition
Authors
S. Jimmy Gandhi, California State University, Northridge; Dale S. Deardorff, Rocky Peak Leadership Center
Tagged Divisions
Entrepreneurship & Engineering Innovation
Paper ID #10735An Implementation of Innovative Thinking in The Entrepreneurship Cur-riculum for EngineersDr. S. Jimmy Gandhi, California State University, Northridge Dr.S. Jimmy Gandhi is an assistant professor at California State University, Northridge and is also The Director of The Ernie Schaffer Center for Innovation and Entrepreneurship. Dr.Gandhi teaches classes and has research interests in entrepreneurship, lean thinking, quality management, six sigma, project management and sustainability. Prior to coming to Cal State University, Northridge, Dr. Gandhi taught at The City University of New York and also at The Stevens
Conference Session
Innovations in Pedagogy
Collection
2014 ASEE Annual Conference & Exposition
Authors
Casey Jane Ankeny PhD, Arizona State University; Stephen J. Krause, Arizona State University
Tagged Divisions
Biomedical
tabular form, with anintensity scale of 0-5 and a word cloud with word size proportional to word frequency. Thisallows instructors to easily pinpoint the muddiest and most interesting concepts.Finally, group-based activities such as in-class activities and projects have been found to be aneffective student-centered engagement strategy9. Here, students work with team members tocomplete short-term or long-term assignments or projects. In this study, we will explore bothshort-term assignments in the form of class problem sets involving statistical software and long-term design projects focusing on design of experiment and statistical analysis of previouslyuntested hypotheses.Overall the organization of classes is as follows: students watch pencasts
Conference Session
Entrepreneurship & Engineering Innovation Division New Ideas Session 1
Collection
2014 ASEE Annual Conference & Exposition
Authors
Erin Jablonski, Bucknell University
Tagged Divisions
Entrepreneurship & Engineering Innovation
the ability to solve problems in novel ways, the capacity to envision alternativesolutions, and the knack for design. However, traditional instructional and evaluation methodsmay make students overly risk averse, impacting their willingness to innovate to the extentnecessary to make disruptive changes to technology. Fostering an entrepreneurial spirit inengineering undergraduates may allow them to be more creative and less risk averse in theirapproach to solving multi-faceted, ill-defined problems. Analysis of student feedback fromreflection essays, self-report attitudinal surveys, and instructor assessment in two very differentcourses that promote the entrepreneurial mindset through student-driven projects will be used todistill the
Conference Session
Multidisciplinary Capstone Design
Collection
2014 ASEE Annual Conference & Exposition
Authors
Ahmed Cherif Megri, North Carolina A&T State University
Tagged Divisions
Multidisciplinary Engineering
, fire protection and lighting. Also, he supervises many courses in the frame of interprofessional projects (IPRO) program. Areas of Interests: - Zonal modeling approach, - Integration zonal models/building energy simulation models, - Zero Net Energy (ZNE) building, - Airflow in Multizone Buildings & Smoke Control, - Thermal Comfort & Indoor Air Quality, - Predictive modeling and forecasting: Support Vector Machine (SVM) tools, - Energy, HVAC, Plumbing & Fire Protection Systems Design, - Computational Fluid Dynamic (CFD) Application in Building, - BIM & REVIT: application to Architecture and Electrical/Lighting Design systems
Conference Session
Industrial Engineering Division Technical Session 2
Collection
2014 ASEE Annual Conference & Exposition
Authors
Imelda Olague-Caballero, New Mexico State University; Delia J. Valles-Rosales, New Mexico State University
Tagged Divisions
Industrial Engineering
Methods Engineering & IE 478 Facilities Planning. IE 316 introduces participants tomethods engineering and work measurement fostering the development of critical thinking, self-assessment, and team work; IE 478 trains the students in the art and science of facility design andplanning. Rounding-up the curriculum of these classes, this educational experience complementsthe student’s professional profile by adding the necessary cultural competency required toproduce a global engineer. The model consists of five components: identification and selection ofindustry partners and potential projects; attendance to in-class mini-lectures & assignment ofpertinent readings supporting the selected project; student’s training previous to
Collection
2014 ERC
Authors
Keith Marzullo
, abstraction, languages, compilers, and operating systems; reliable, fault- tolerant and secure hard/middle/software; …). –  Networking Technology and Systems (NeTS): Transformative research on fundamental scientific and technological advances leading to the understanding, development, engineering, and management of future-generation, high-performance computer networks.Word Cloud of CNS Core Projects Computing Education for the 21st Century (STEM-CP: CE21) Enhancing computational competencies Goals:   RESEARCH  ON   TEACHING  &
Conference Session
Industry Collaboration in Construction Education
Collection
2014 ASEE Annual Conference & Exposition
Authors
Dan Koo, Indiana University Purdue University, Indianapolis; J. William White AIA, Indiana University Purdue University, Indianapolis; Veto Matthew Ray, Indiana University Purdue University, Indianapolis
Tagged Divisions
Construction
American Institute of Architects and the Construction Specifi- cations Institute. His professional interests include great architecture and all things related to construction innovation.Mr. Veto Matthew Ray, Indiana University Purdue University, Indianapolis Mr. Matt Ray is a lecturer for the Construction Engineering Management Technology Program offered through the Purdue School of Engineering and Technology at Indiana University Purdue University In- dianapolis. He currently provides instruction for Soils and Foundations, Construction Cost and Bidding, Construction Project Cost and Production Control as well as managing the Certificate of Training in As- set Management. He is a graduate of Purdue School of Engineering
Conference Session
Computer Programming and Simulation
Collection
2014 ASEE Annual Conference & Exposition
Authors
Gregorio E. Drayer, Georgia Institute of Technology; Ayanna M. Howard, Georgia Institute of Technology
Tagged Divisions
Computers in Education
her B.S. in Engineering from Brown University, her M.S.E.E. from the University of Southern California, and her Ph.D. in Electrical Engineering from the University of Southern California in 1999. Her area of research is centered around the concept of humanized intelligence, the process of embedding human cognitive capability into the control path of autonomous systems. This work, which addresses issues of autonomous control as well as aspects of interaction with humans and the surrounding environment, has resulted in over 130 peer-reviewed pub- lications in a number of projects – from scientific rover navigation in glacier environments to assistive robots for the home. To date, her unique accomplishments have been
Conference Session
Construction Education Topics in Architectural Engineering
Collection
2014 ASEE Annual Conference & Exposition
Authors
Laura Elizabeth Leach, Western Kentucky University
Tagged Divisions
Architectural
meld with constructability, selection and sizing of materials, reducing material waste,efficient space design, and clearly illustrating the resulting design in a set of constructiondrawings. To achieve these course goals in a semester, the project size is kept small, allowing usto focus on quality instead of quantity.Initial offerings of the course resulted is several issues that needed to be addressed. Whilestudents are most often very excited about the first phase of the course, ‘designing’ a home,keeping the individual projects small in size and scope became quite difficult. Students wereintrensically motivated to design their ‘dream home’, intent on solving all the preceivedproblems of their childhood home(s). While student enthusiasm and
Conference Session
Diversity in K-12 and Pre-college Engineering Education
Collection
2014 ASEE Annual Conference & Exposition
Authors
Amelito G. Enriquez, Canada College; Wenshen Pong, San Francisco State University; Nilgun Melek Ozer, San Francisco State University; Hamid Mahmoodi, San Francisco State University; Hao Jiang, San Francisco State University; Cheng Chen, San Francisco State University; Hamid Shahnasser, San Francisco State University; Nick Patrick Rentsch, San Francisco State University
Tagged Divisions
K-12 & Pre-College Engineering
engineering through a two-week residential summer camp. The Summer Engineering Instituteprovides participants an insight into the engineering profession and the engineering educationalsystem through a combination of lectures, hands-on laboratory activities, field trips, workshops,panels, and projects. Among the strategies employed in developing the program are emphasizingall the major fields of engineering and the various paths to an engineering career, including therole of community colleges; targeting first generation students and underrepresented minorities;collaborating with high school faculty and staff through a nomination process to identify andselect potential students; collaboration among community college and university faculty indeveloping
Conference Session
NSF Grantees’ Poster Session
Collection
2014 ASEE Annual Conference & Exposition
Authors
Irina Nicoleta Ciobanescu Husanu, Drexel University (Tech.); Yalcin Ertekin, Drexel University (Tech.); Radian G. Belu, Drexel University (Tech.)
Tagged Topics
NSF Grantees Poster Session
Tagged Divisions
Division Experimentation & Lab-Oriented Studies
Paper ID #10330Development of Agent-based Tutor & Simulator System and Assessment ofInstructional Modules Implemented in areas of Quality Control, Metrologyand PrototypingDr. Irina Nicoleta Ciobanescu Husanu, Drexel University (Tech.) Dr. Ciobanescu –Husanu received her PhD degree in mechanical engineering from Drexel University in 2005 and also hold a MS degree in aeronautical engineering from Polytechnic University of Bucharest. Her dissertation was on numerical investigation of fuel droplet interactions at near zero Reynolds numbers. Other research projects involved computational evaluation of Icing Scaling Methods
Conference Session
Industry Collaboration in Construction Education
Collection
2014 ASEE Annual Conference & Exposition
Authors
Lisa M. Holliday, University of Oklahoma; Matthew Reyes, University of Oklahoma; Kenneth F. Robson, University of Oklahoma
Tagged Divisions
Construction
inconstruction management faculty and has sponsored summer internships to increase facultyindustry experience. The internship program is structured by a three party agreement betweenAGC, the sponsoring university, and a local contractor. Each of the three parties pays a third ofthe faculty intern’s regular monthly salary. Thus, each entity has a vested interest in the facultyintern’s success in the program and its benefits to education.The University of Oklahoma took this opportunity to partner with a local general contractor toincrease faculty construction experience and to train the faculty member in the use of RevitStructure. The faculty intern joined the contractor’s pre-construction team and developed theRevit model for an upcoming project. The
Conference Session
Energy Conservation and Conversions for Green Buildings
Collection
2014 ASEE Annual Conference & Exposition
Authors
Jimmy Antoine Chahine; Minh Nguyen Ha, Forum Energy Technology; Vong Hem, Lectrus Corporation - Applications Engineer; Vassilios Tzouanas, University of Houston, Downtown
Tagged Divisions
Energy Conversion and Conservation
, the design of a photovoltaic system is presented for a small model house along with itsassociated instrumentation, real time data acquisition and automation using NI® LabVIEW. Thestudy clearly shows that energy requirements can be met using renewable energy sources andthat the goal of a zero energy house is attainable in many locations.This work was performed in partial fulfillment of the requirements of the Senior CapstoneProject course in controls and instrumentation of the Engineering Technology department at theUniversity of Houston - Downtown and then was continued as research project as part ofcontinuing education. Student experiences are summarized and the need for teamwork andeffective project management methods is emphasized.I
Conference Session
Teaching and Assessment Methodologies
Collection
2014 ASEE Annual Conference & Exposition
Authors
M. Austin Creasy, Purdue University (Statewide Technology); Nicole Otte, Central Nine Career Center
Tagged Divisions
Manufacturing
details of the class and the successes of this partnership.IntroductionIn southeastern Indiana, manufacturing is one of the dominant economic activities. About 30percent of the overall workforce works directly for a manufacturing company.1 According to theEconomic Opportunities through Education by 2015 (EcO15), this workforce is not sufficientlytrained to meet the needs of the manufacturers.1 To meet these needs, community educationleaders, industry, and academia have partnered together in order to assist the workforce and thefuture workforce meet these needs. Part of this partnership has been to assist all of the secondaryschools within the southeastern region of Indiana offer Project Lead the Way (PLTW) courses.These classes are being used to
Collection
2014 ASEE Zone 1 Conference
Authors
Arthur Rozario; Justin Paruvaparampil; Keis Sultani; ShuaiXiang Zhang; Andres Mora; Catherine Carti; Brendan O'Brien; M.C. Damas; Wenli Guo; Andrew Nguyen; Vazgen Shekoyan; Sunil Dehipawala; Alexei Kisselev; Tak Cheung
Community College, Bayside NY Biology Deapartment, CUNY Queensborough 11364 Community College, Bayside NY 11364 Abstract—The project studied the photon diffusion through determination of cell size via the Mie theory, additional resultsturbid media with mobile phone camera. The student have established the importance of large angle signal as arisingexperiments in transmission profile imaging and pulse from the internal sub-micron structure and that cell size hasbroadening measurement were calibrated with the same samples little contribution to light diffusion data [7]. Therefore photonused in published research
Conference Session
Liberal Education/Engineering & Society Division Poster Session
Collection
2014 ASEE Annual Conference & Exposition
Authors
Steve E. Watkins, Missouri University of Science & Technology; Les Kinsler, Kansas State University, Salina; Julia L. Morse, Kansas State University, Salina; Doug Carroll, Missouri University of Science and Technology
Tagged Divisions
Liberal Education/Engineering & Society
Technology Doug Carroll is a Professor of Mechanical Engineering at Missouri S&T and is the Director for the Cooperative Engineering Program, a cooperative effort with Missouri S&T and Missouri State University. Dr. Carroll founded the student design center at Missouri S&T and served as its first director. He also served as the advisor for the solar car project for 12 years, including two national champion teams. He has worked with many students on design projects in his career. Page 24.964.1 c American Society for Engineering Education, 2014
Conference Session
Robotics and Automation
Collection
2014 ASEE Annual Conference & Exposition
Authors
Warren Rosen, Drexel University (Eng.); Yalcin Ertekin, Drexel University (Engineering Tech); M. Eric Carr, Drexel University
Tagged Divisions
Engineering Technology
career, Dr. Ertekin published papers in referred journals and in conference proceedings in his area of research interest. He has also been PI for various NSF research projects including NSF-TUES and MRI programs. Dr. Ertekin is an active member in the Society of Manufacturing Engineers (SME), and currently serves as a chair of Philadelphia SME Chapter-15.Mr. M. Eric Carr, Drexel University Mr. Eric Carr is a full-time Laboratory Manager and part-time adjunct instructor with Drexel University’s Engineering Technology program. Eric assists faculty members with the development and implementa- tion of various Engineering Technology courses. A graduate of Old Dominion University’s Computer Engineering Technology
Conference Session
Curriculum & Student Enrollment I
Collection
2014 ASEE Annual Conference & Exposition
Authors
Veto Matthew Ray, Indiana University Purdue University, Indianapolis; J. William White, Indiana University Purdue University, Indianapolis; Dan D. Koo, Indiana University Purdue University, Indianapolis
Tagged Divisions
Engineering Technology
Paper ID #9515Program Accreditation: Developing a Methodology to Retrieve and MaintainRelevant Data for Course Improvement and Provide an Assessment ProcessWhich Closes the LoopMr. Veto Matthew Ray, Indiana University Purdue University, Indianapolis Mr. Matt Ray is a lecturer for the Construction Engineering Management Technology Program offered through the Purdue School of Engineering and Technology at Indiana University Purdue University In- dianapolis. He currently provides instruction for Soils and Foundations, Construction Cost and Bidding, Construction Project Cost and Production Control as well as managing the
Conference Session
Design Across the Curriculum
Collection
2014 ASEE Annual Conference & Exposition
Authors
Jennifer Buelin-Biesecker, North Carolina State University; Cameron Denson, North Carolina State University
Tagged Divisions
Design in Engineering Education
1. However, a perceived inability to assess creative attributes of students’ work has oftenprecluded creativity instruction in the classroom. The Consensual Assessment Technique (CAT)has shown promise in a variety of domains for its potential as a valid and reliable means ofcreativity assessment. Relying upon an operational definition of creativity and a group of ratersexperienced in a given domain, the CAT offers the field of engineering education an assessmentmethod that has demonstrated discriminant validity for dimensions of creativity as well as fortechnical strength and aesthetic appeal. This paper reports on a web-based adaptation of the CATfor rating student projects developed during a week-long engineering camp. High school
Conference Session
Track 3 - Session 1
Collection
2014 ASEE International Forum
Authors
Morgan M. Bakies, University of Illinois at Urbana-Champaign; Karen Seliah Lamb, University of Illinois, Urbana-Champaign
Tagged Topics
Student Development
Enterprise in the United StatesCurrently, large research-based engineering schools, such as the University of Illinois at Urbana-Champaign (UIUC), are trying to incorporate more project-based learning (PBL) intoengineering curricula. However, integrating PBL proves to be a challenge, especially in largelecture classes typically required for freshmen and sophomore engineers. Junior Enterprise (JE),a student-led non-profit consulting organization comprised of undergraduate and graduatestudents, provides a solution to this problem. Students work on projects together to provideservices to companies and institutions, enhancing students’ business and entrepreneurial skillsthrough practical application of classroom learning. In 2012, the first United
Conference Session
Biomedical Division Poster Session
Collection
2014 ASEE Annual Conference & Exposition
Authors
Marcia A. Pool, University of Illinois, Urbana-Champaign; Jennifer L. Groh, Purdue University Women in Engineering Program, West Lafayette; Allison L. Sieving, Purdue University, West Lafayette
Tagged Divisions
Biomedical
design processskills are not unlike decision making skills employed in real-life. However, describingengineering to pre-college students in these foreign terms may be intimidating2 which mayinhibit students from pursuing engineering in college. Therefore, there is a need to advertiseengineering for what it is: implemented problem solving.Engineers are natural problem solvers and seek challenge. Allowing novice engineers (pre-college students) to practice and develop their problem solving skills through design allows themto connect concept with implementation and verification thereby enhancing understanding andinterest while reducing apprehension to “engineering”. As students achieve success in smalldesign projects, their confidence is increased3
Conference Session
Multidisciplinary Experiential Learning
Collection
2014 ASEE Annual Conference & Exposition
Authors
Kathryn Jablokow, Pennsylvania State University; Jack V. Matson, Pennsylvania State University, University Park; Darrell Velegol, Pennsylvania State University, University Park
Tagged Divisions
Multidisciplinary Engineering
Adventurers must do this: Adventurers must also do this:TasksWeek 1 Uncovering Your Creative Identity9/1-9/7 - Week One Content Quiz - Complete at least 1 Exercise & Reflection SurveyWeek 2 Idea Generation Project Phase 1: Exploration Statement9/8-9/14 - Week Two Content Quiz & Reflection - Complete at least 1 Exercise & Reflection SurveyWeek 3 Idea Evaluation9/15-9/21 - Week Three Content Quiz - Complete at least 1 Exercise & Reflection SurveyWeek 4 Creative Collaboration Project Phase 2: Design Statement &9/22-9/28 - Week Four
Conference Session
Integration of Engineering and Other Disciplines (Including Liberal Arts)
Collection
2014 ASEE Annual Conference & Exposition
Authors
Arthur Felse, Northwestern University; Igor Kourkine
Tagged Divisions
Liberal Education/Engineering & Society, Multidisciplinary Engineering
education has been noted by the National Academyof Sciences 4 and echoed in the “Engineer of 2020” report of the National Academy ofEngineering5 and more recently in President Obama’s strategy for American innovation6.Following the lead of the NAS and NAE, several universities have launched a variety oftechnology commercialization and entrepreneurship programs – short courses, workshops, cross-disciplinary courses, commercialization projects, and others7.This paper describes a sequence of three technology commercialization courses in the Master ofBiotechnology Program at Northwestern University. We developed these courses based onrecommendations of our industrial advisory board, our interactions with business developmentprofessionals, previously
Conference Session
Instrumentation Division Technical Session 1
Collection
2014 ASEE Annual Conference & Exposition
Authors
Zachary Cody Hazelwood; Saleh M. Sbenaty, Middle Tennessee State University
Tagged Divisions
Instrumentation
Paper ID #10699Designing, Building, and Testing an Autonomous Search and Rescue Robot— An Undergraduate Applied Research ExperienceZachary Cody Hazelwood Cody Hazelwood is currently a software developer at the Alpha High Theft Solutions division of Check- point Systems. He received the B.S. degree in Professional Computer Science from Middle Tennessee State University in May 2013. He currently does freelance projects involving mobile software develop- ment, microcontroller applications, and electronics. He enjoys learning about and testing ways to improve people’s lives with technology.Dr. Saleh M. Sbenaty, Middle Tennessee