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Displaying results 1501 - 1530 of 1782 in total
Conference Session
ECCD Applications in Energy and Thermodynamics
Collection
2015 ASEE Annual Conference & Exposition
Authors
Farshid Zabihian, West Virginia University Inst. of Tech.
Tagged Divisions
Energy Conversion and Conservation
Paper ID #12859Alternative approach to teach gas turbine based power cyclesDr. Farshid Zabihian, West Virginia University Inst. of Tech. Farshid Zabihian, Ph.D. Assistant Professor Department of Mechanical Engineering West Virginia Uni- versity Institute of Technology Education: Ph.D., Mechanical Engineering,Ryerson University, 2011 M.S. Mechanical Engineering, Iran University of Science and Technology, 1998 B.S. Mechanical Engineering, Amir Kabir University of Technology, 1996 Authored or coauthored more than 70 papers in Journals and peer-reviewed conferences
Conference Session
Concurrent Paper Tracks - Session I
Collection
2015 ASEE International Forum
Authors
Takao Ichiko, Professional online
Tagged Topics
International Forum
create amore fruitful daily engineering educational life, from the viewpoints of both learningstyle and form within our communities, which are growing larger in a wide variety ofdirections. Under these circumstances, we have studied engineering educational progress throughthe use of media technology. The first step described tele-education based on imagestogether with the compositional concept of electronic media materials and theirauthoring tools. At the same time, some practical applications were shown as resultingdata in the multimedia material production process, actual tele-operations and usefulimage capturing, which could be dynamically processed for features extraction¹. As asecond step, emphasis was placed on developing a more
Conference Session
Aerospace Technical Session 3
Collection
2015 ASEE Annual Conference & Exposition
Authors
Hank D Voss, Taylor University; Jeff F Dailey; William A Bauson, Taylor University; Bill Chapman, Taylor University
Tagged Divisions
Aerospace
, Fundamentals of Space Flight Systems, Astronomy, and Sr. Capstone Sequence. He enjoys mentoring undergraduate students in aerospace, sensors, and energy-related research projects. Some of the research areas include spacecraft nano-satellite technologies, satellite payload instrumenta- tion, High Altitude research Platform (HARP) experiments, wave particle interactions in space, space- flight X-ray imagers, construction and renewable energy engineering and architecture, and philosophy of science. Dr. Voss has worked as PI on many NASA, Air Force, Navy, NSF, and DOE research grants and has published over 120 scientific papers. hnvoss@taylor.edu, Phone 765 998 4843 or 765 618 3813Prof. Jeff F Dailey Mr. Jeff Dailey
Conference Session
First-year Programs Division Technical Session 8: Project-based Learning and Cornerstone Courses
Collection
2015 ASEE Annual Conference & Exposition
Authors
Wei Zheng, Jackson State University; Yanhua Cao, Jackson State University; Jianjun Yin, Jackson State University
Tagged Topics
Diversity
Tagged Divisions
First-Year Programs
Paper ID #13970Effects of Scaffolding Creative Problem Solving through Question Promptsin Project-Based Community Service LearningProf. Wei Zheng, Jackson State University Dr. Wei Zheng is an associate professor of Civil Engineering at Jackson State University. He received his Ph.D. in Civil Engineering from University of Wisconsin-Madison in 2001 and has over ten years of industrial experience. Since becoming a faculty member at JSU in 2005, he has made continuous efforts to integrate emerging technologies and cognitive skill development into engineering curriculum.Mr. Yanhua Cao, Jackson State University Yanhua Cao is an
Conference Session
International Division Technical Session 2
Collection
2015 ASEE Annual Conference & Exposition
Authors
Kent A. Wayland, University of Virginia
Tagged Divisions
International
. Students apply in their first semester to take the course in their second semester,so they go abroad early in their academic career. The course covers the gamut of preparation,from culture-specific knowledge for the places they will visit, to basic issues of travel abroad, toa focus on the Engineering Cultures framework that emerged from the STS Department atVirginia Tech. Further, the course has begun partnering with North Carolina A&T, anhistorically black college. The students from UNCA&T join during the semester via distance-learning technology and also come on the trip itself, giving all students the healthy sense thatcultural difference does not just exist across national boundaries. The trip, like the semester-longcourse, exposes
Collection
2015 Pacific Southwest Section Meeting
Authors
M. Mohammad Ali; Hassan Badkoobehi
Technology Age,Proceedings, Atlanta, USA.10. Harman, H.H (1969) Modern Factor Analysis, 2nd Edition, Univ. of Chicago press. Chicago,Illinois. Proceedings of the 2015 American Society for Engineering Education/Pacific South West Conference Copyright © 2015, American Society for Engineering Education 56811. Jennings, JE and Knight K. (1957) The additional Settlement of foundations due to collapseof sandy subsoils on wetting. Proceedings,4th ICSMFE.12. Matheron, G.(1963) Principles of Geostatistics. Econ. Geology, 58, 1246-1266 Proceedings of the 2015 American Society for Engineering Education/Pacific
Collection
2015 ASEE Zone 3 Conference
Authors
Norman D. Dennis; Edgar C. Clausen
many of the techniques we have incorporated and our experiences with them.” • “Professional development topics would be very helpful.” • “Repeating a similar series maybe twice a year would be good.” • “Future Directions: o Seminars on more current topics in education (e.g. technology, online classes, designing a lab, design-based learning, ‘flipped’ classrooms . . .) © American Society for Engineering Education, 2015 7 2015 ASEE Zone III Conference (Gulf Southwest – Midwest – North Midwest Sections) o Discussion
Conference Session
College Industry Partnerships Division Technical Session 1
Collection
2015 ASEE Annual Conference & Exposition
Authors
Timothy J. Jacobs, Texas A&M University; Charles E. Baukal Jr. P.E., John Zink Co. LLC
Tagged Divisions
College Industry Partnerships
Combustion. The symposia attract members of the CombustionInstitute as well as others interested in combustion from around the world. The synergismproduced at these symposia makes them the principal forum for presenting and integratingcombustion research results. Members of both the CSS and the CI come from variedorganizations representing industry, academia, and national laboratories / research centers.Since the CSS is a non-profit organization, its Advisory Panel actively seeks opportunities toreinvest funds toward organization and membership development and growth. An effort wasstarted in 2010 to actively use available funds to invest in outreach programs that enhance thescience, technology, engineering, and mathematics (STEM) disciplines
Conference Session
Teaching & Learning in Graduate Programs
Collection
2015 ASEE Annual Conference & Exposition
Authors
Quintana M. Clark, Purdue University, West Lafayette Indiana; James L. Mohler, Purdue University, West Lafayette; Alejandra J. Magana, Purdue University, West Lafayette
Tagged Divisions
Graduate Studies
Paper ID #13382Learning Style DynamicsQuintana Clark, Purdue University, West Lafayette Quincy Clark, a graduate from the College of Technology at Purdue University. Her research interests include emerging technologies for teaching and learning in STEM, e-learning instructional theory and design, and social media as applied to learning styles.Prof. James L. Mohler, Purdue University, West LafayetteDr. Alejandra J. Magana, Purdue University, West Lafayette Alejandra Magana is an Assistant Professor in the Department of Computer and Information Technology and an affiliated faculty at the School of Engineering Education at
Collection
2015 Northeast Section Meeting
Authors
Paul B. Crilly
2015 ASEE Northeast Section Conference Teaching an Undergraduate Electromagnetics and Antennas Course Using A Hand-Held RF Analyzer - Engaged Learning Paul B. Crilly Department of Engineering, Electrical Engineering, U.S. Coast Guard Academy, New London, CT 06320AbstractThis paper describes an experiential learning concept to teach undergraduate electromagneticsand antenna theory using a hand-held RF analyzer and other basic laboratory apparatus. Theanalyzer contains both an RF source and spectrum analyzer. The RF source serves to enableSWR measurement for stub matching, measuring cable losses, detecting cable faults, cablelengths, and such
Collection
2015 Pacific Southwest Section Meeting
Authors
Jing Pang
Configurations”, San Jose, California, Feb., 2009.3. Andrew S. Tanenbaum, Todd Austin, “Structured Computer Organization”, Pearson publisher, 2012.4. Robert Duron, Barbara Limbach, and Wendy Waugh, “Critical Thinking Framework for Any Discipline”, International Journal of Teaching and Learning in Higher Education, Vol. 17, No. 2, Pages 160-166, 2006.5. James Graham, Karla Conn Welch, Jeffrey Lloyd Hieb, and Shamus McNamara, “Critical Thinking in Electrical and Computer Engineering,” in Proceedings of the ASEE 2012 Annual Conference, 2012.6. Robert J. Niewoehner, “Applying a Critical Thinking Model for Engineering Education,” 2006 World Transactions on Engineering and Technology Education, Vol.5, No.2, 2006.7. Belgin Yildirim, Sukran Ozkahraman
Conference Session
ECCD Applications
Collection
2015 ASEE Annual Conference & Exposition
Authors
Ulan Dakeev, University of Michigan, Flint; Quamrul H. Mazumder, University of Michigan, Flint; Faruk Yildiz, Sam Houston State University; Kenan Baltaci, University of Wisconsin, Stout
Tagged Divisions
Energy Conversion and Conservation
education, metacognition, motivation, and engagement of students. He is a Fulbright scholar travelled around the world to promote quality and globalization of higher education.Dr. Faruk Yildiz, Sam Houston State UniversityDr. Kenan Baltaci, University of Wisconsin, Stout Kenan Baltaci is an Assistant Professor at University of Wisconsin-Stout, in the Electrical Engineering Technology Department. He received B.S. in electrical engineering degree from Istanbul Technical Uni- versity in Turkey. Following, a master’s degree and doctoral degree in industrial technology was granted from University of Northern Iowa. Page
Collection
2015 Northeast Section Meeting
Authors
Prerana Pal Karmokar; Shwetha Krishna Pondicherry; Elif Kongar
the project management office in the front end of innovation. International Journal of Project Management , 408-421. 8 © American Society for Engineering Education, 2015 2015 ASEE Northeast Section Conference4. Baban, H., & Mokhtar, S. (2010). Online Document Management System for Academic Institutes. Information Management, Innovation Management and Industrial Engineering , 315-319.5. Bernroider, E. W., & Ivanov , M. (2011). IT project management control and the Control Objectives for IT and related Technology (CobiT) framework . International
Conference Session
ECCD Applications
Collection
2015 ASEE Annual Conference & Exposition
Authors
Esther T. Ososanya, University of the District of Columbia; Sasan Haghani, University of the District of Columbia; Wagdy H Mahmoud, University of the District of Columbia; Samuel Lakeou, University of the District of Columbia; Samuel Daouda Diarra, University of the District of Columbia
Tagged Divisions
Energy Conversion and Conservation
Post Doctoral Research Fellow from the University of Birmingham, UK. She was a Visiting Professor at Michigan Technological University for five years, and an Associate professor at Tennessee Technological University for 7 years prior to arriving at the University of the District of Columbia in the Fall of 2001. Dr. Ososanya research interests include new applications for VLSI ASIC design, Microcomputer Architecture, Microcontrollers, Nanotechnology, and Renewable Energy Systems. In recent years, she has worked with colleagues to apply these technologies to Biomass research, Solar Cells efficiency capture research, and Renewable Energy Curriculum developments. Dr. Ososanya teaches a myriad of Electrical Engineering
Collection
2015 Northeast Section Meeting
Authors
Junling Hu; Ruoxu Jia; Xiao Huang; Xingguo Xiong; Kai-tak Wan
CFDModuleUserGuide.pdf 26. S. Shiaffino and A.A. Sonin, Molten droplet deposition and solidification at low Weber numbers, Phys. Fluids, 9, 3172-3187 (1997).Junling Hu 9 © American Society for Engineering Education, 2015 2015 ASEE Northeast Section ConferenceDr. Junling Hu is an associate professor of Department of Mechanical Engineering at theUniversity of Bridgeport. She received her B.Eng. in Thermal Engineering in 1996 and M.Eng.in Thermal Engineering in 1999 from Huazhong University of Science and Technology andPh.D. from Missouri University of Science and Technology in 2005
Collection
2015 ASEE Zone 3 Conference
Authors
Jing Pang
University”, Proceedings of the 2005 American Society for Engineering Education Annual Conference & Exposition, Session 3532, Portland, Oregon, 2005.10 Terasic Technologies Inc., “DE0-Nano User Manual”, Spanish Fork, Utah, 2012, pp. 1 - 154.11 Altera Corporation, “Cyclone IV Device Datasheet”, San Jose, California, 2014, pp. 1 - 44.Jing PangJing Pang has been Associate Professor in Department of and Electrical and ElectronicEngineering, and also Computer Engineering Program at CSUS since 2009. She got her Ph. D. inElectrical Engineering from Ohio University in 2003 and she became an Assistant Professor atCalifornia State University, Sacramento in 2003. At California State University, Sacramento, shetaught courses including
Conference Session
NSF Grantees’ Poster Session
Collection
2015 ASEE Annual Conference & Exposition
Authors
Joseph A Daraio, Rowan University; Ralph Alan Dusseau P.E., Rowan University
Tagged Topics
NSF Grantees Poster Session
-2012), and a postdoctoral research associate at Tennessee Technological University (2009-2010). Education: Ph.D, Civil and Environmental Engineering-Hydraulics, University of Iowa, 2009; MS, Environmental Engi- neering, University of Connecticut, 2002; MS, Philosophy, Rensselaer Polytechnic Institute, 1998; MS, Biology, New Mexico State University, 1994; BS, Environmental and Forest Biology, SUNY College of Environmental Science & Forestry, 1991Dr. Ralph Alan Dusseau P.E., Rowan University Dr. Ralph Dusseau is a Professor of Civil and Environmental Engineering at Rowan University in Glass- boro, New Jersey. Dr. Dusseau is also serving as the Associate Chair of the Department of Civil and Environmental
Conference Session
College Industry Partnerships Division Technical Session 3
Collection
2015 ASEE Annual Conference & Exposition
Authors
Mark Angolia, East Carolina University; John Pickard, East Carolina University; Leslie Pagliari, East Carolina University
Tagged Topics
Diversity
Tagged Divisions
College Industry Partnerships
Paper ID #12046Improving Online STEM Education through Direct Industry Classroom En-gagementDr. Mark Angolia, East Carolina University Mark Angolia, PhD, is an Assistant Professor and Program Coordinator for the Industrial Distribution and Logistics degree program in the College of Engineering and Technology at East Carolina University (ECU). Prior to entering academia in 2005, he held industrial positions in engineering, manufacturing, quality, materials, and operations management for manufacturing companies within the automotive sup- ply chain. Dr. Angolia’s teaching focuses on Enterprise Resource Planning with SAP
Collection
2015 Pacific Southwest Section Meeting
Authors
Paul Nissenson
67 Impact of a hybrid format on student performance and perceptions in an introductory computer programming course Paul Nissenson Department of Mechanical Engineering California State Polytechnic University, Pomona, CAAbstractThis study describes the development and implementation of a hybrid format with a flippedclassroom approach in an introductory computer programming course for mechanical engineers atCalifornia State Polytechnic University, Pomona (Cal Poly Pomona). Two sections of the coursewere taught during Spring
Conference Session
ECCD Innovative Teaching Applications
Collection
2015 ASEE Annual Conference & Exposition
Authors
Ilya Y. Grinberg, Buffalo State College; Matin Meskin, University at Buffalo; Mohammed Safiuddin, University at Buffalo, SUNY
Tagged Topics
Diversity
Tagged Divisions
Energy Conversion and Conservation
Paper ID #12496Test Bed for a Cyber-Physical System (CPS) Based on Integration of Ad-vanced Power Laboratory and eXtensible Messaging and Presence Protocol(XMPP)Dr. Ilya Y. Grinberg, Buffalo State College llya Grinberg graduated from the Lviv Polytechnic Institute (Lviv, Ukraine) with an M.S in E.E. and earned a Ph.D. degree from the Moscow Institute of Civil Engineering (Moscow, Russia). He has over 40 years of experience in design and consulting in the field of power distribution systems and design automation. He has over 40 published papers. Currently he is professor of engineering technology at SUNY Buffalo State. His
Conference Session
Statics Online
Collection
2015 ASEE Annual Conference & Exposition
Authors
Carisa H. Ramming, Oklahoma State University; John J. Phillips, Oklahoma State University
Tagged Divisions
Mechanics
time, she has taught classes in structural analysis, timber and steel design, engineering mechanics: statics, building foundations and numerical analysis. Professor Ramming has recently been named Halliburton Outstanding Young Faculty and the Outstanding Teacher for the College of Engineering, Architecture and Technology. She has also published books for Project Lead the Way and a text on Numerical Structural Analysis. Professor Ramming enjoys spending time with the students of CEAT as the advisor of the Ar- chitectural Engineering Institute, Tau Beta Pi, Women Inspiring Successful Engineers, and CEAT Student Council.Prof. John J Phillips, Oklahoma State University JOHN PHILLIPS, a registered engineer and
Conference Session
Materials Division Technical Session 3
Collection
2015 ASEE Annual Conference & Exposition
Authors
Michelle M. Blum, Syracuse University; Katie D. Cadwell, Syracuse University; Julie M. Hasenwinkel, Syracuse University
Tagged Divisions
Materials
also participated in college level outreach programs; specifically developing a hands-on activity to introduce students to the fundamental material science, mechanics and biomedical engineering through the concept of biomimicry.Dr. Katie D Cadwell, Syracuse University Katie Cadwell is an Assistant Professor in the Department of Biomedical and Chemical Engineering at Syracuse University, where she has taught Chemical Engineering core courses since 2011. After receiving Chemical Engineering degrees from the Missouri University of Science and Technology (B.S.) and Uni- versity of Wisconsin-Madison (Ph.D.), she pursued a postdoctoral position in engineering education and outreach with the Interdisciplinary Education
Conference Session
NSF Grantees’ Poster Session
Collection
2015 ASEE Annual Conference & Exposition
Authors
Kyoung-Yun Kim, Wayne State University; Carolyn E Psenka PhD, Wayne State University; Kathy Schmidt Jackson, Pennsylvania State University, University Park; Karl R Haapala, Oregon State University
Tagged Topics
NSF Grantees Poster Session
of inter- actions of humans with technologies in everyday activities. Dr. Psenka is a Research Associate in the Industrial and Systems Engineering Department at Wayne State University and is affiliated with the NSF I/UCRC Center for e-Design as a design anthropologist.Dr. Kathy Schmidt Jackson, Pennsylvania State University, University Park Kathy Jackson is a Senior Research Associate at Pennsylvania State University’s Schreyer Institute for Teaching Excellence. In this position, she promotes Penn State’s commitment to enriching teaching and learning. Dr. Jackson works in all aspects of education including faculty development, instructional design, engineering education, learner support, and evaluation.Prof. Karl
Conference Session
Pipeline and Performance in BME Education
Collection
2015 ASEE Annual Conference & Exposition
Authors
Dianne Grayce Hendricks, University of Washington; Lucy L. Pick, University of Washington; Alyssa Catherine Taylor, University of Washington
Tagged Topics
Diversity
Tagged Divisions
Biomedical
forEngineering Disciplines. American Society for Engineering Education (ASEE) Conference 2010, Louisville, KY,USA, 2010.3. Williams, D., Ma, Y., Prejean, L., Ford, M. J. & Lai, G. (2007). Acquisition of Physics Content Knowledge andScientific Inquiry Skills in a Robotics Summer Camp. Journal of Research on Technology in Education 40, 2007.4. Rousche, P., Cho, M., Dai, Y., Hetling, J., Lu, H., Liang, J., McCormick, S., Schneeweis, D. & Magin, R. (2006).A BioEngineering Summer Day Camp for High-School Science Students and Teachers. American Society forEngineering Education (ASEE) Conference 2006, Chicago, Illinois, USA, 2006.5. Cezeaux, J., Rust, M. J., Gettens, R. & Beach, R. D. (2011). Implementation of a Biomedical EngineeringSummer Program
Conference Session
Innovations in Manufacturing Laboratories
Collection
2015 ASEE Annual Conference & Exposition
Authors
Wayne P. Hung, Texas A&M University; Adam Farmer
Tagged Topics
Diversity
Tagged Divisions
Manufacturing
and observation of student confidence in the labs willgage the total success of teaching manufacturing for a large class.ReferencesGroup Cell 1) Leighbody G.B. and Kidd D.M., Methods of Teaching Shop and Technical Subjects, Delmar publisher, 1966. 2) Nowak, M.L., Identification of Teaching Strategies and Leaning Activities for Manufacturing Technology Education Programs, Dissertation, Texas A&M University, 1988. 3) Miller M.R., Strategies for Developing an Exemplary Program in Manufacturing Engineering Technology, Dissertation, Texas A&M University, 1993. 4) Nelson M.S., Technical Competencies for Entry-Level Manufacturing Engineering Technologists for the Year 2000, Dissertation, Texas A&M
Conference Session
Concurrent Paper Tracks - Session I
Collection
2015 ASEE International Forum
Authors
Jacqueline Gartner Ph.D., Washington State University; Bernard J. Van Wie, Washington State University
Tagged Topics
International Forum
enhancing the understanding ofbiomass conversion technology and meeting the challenges of implementation in a developingnation. This project focuses on a global problem, energy demand, and utilizes an existingcollaboration to develop a miniaturized hands-on learning module for implementation in theclassroom and train future engineers from both sites while exposing them to internationalcollaborations to develop their problem-solving skills. The module is being designed toovercome process implementation barriers in resource limited environments like Nigeria.Discussions for writing and submitting the USAID-PEER proposal that supports this work wereinitiated by Washington State University (WSU) with Ahmadu Bello University (ABU) in Zaria,Nigeria, and
Conference Session
NSF Grantees’ Poster Session
Collection
2015 ASEE Annual Conference & Exposition
Authors
Maria-Isabel Carnasciali, University of New Haven; Jean Nocito-Gobel, University of New Haven; Christopher Martinez, University of New Haven; Mark J Graham Ph.D., Yale University
Tagged Topics
NSF Grantees Poster Session
then seven years as director of education research at Columbia University’s College of Physicians & Surgeons. At Yale since 2011, Dr. Graham has assumed positions of increasing responsibility and evaluation project management. He has published a number of peer-reviewed articles on evaluation, assessment, and, recently in the journal Science, student persistence in Science Technology Engineering and Mathematics (STEM) fields. At New Haven Reads, Mark works as a volunteer with New Haven K-12 kids on their reading skills and homework. Page 26.511.1 c American Society for
Collection
2015 Spring ASEE Middle Atlantic Section Conference
Authors
Joseph Tranquillo; Keith Buffinton
 centered on our Environmental Center and two new majors ­ Managing for Sustainability and Environment Engineering. The Bucknell University Green Fund (​ www.bucknell.edu/GreenFund​ ) was recently established to provide start­up funding for sustainability projects proposed and implemented by students, faculty, and staff. The relationships between these ecosystems and the innovation ecosystem are growing and show great promise.   There have also been several ties to local, regional and national groups. KEEN and the SBDC have already been mentioned, but Bucknell has also fostered ties to the Department of Community and Economic Development, Greater Susquehanna Keystone Innovation Zone, Ben Franklin Technology Partners of Northeast
Conference Session
NSF Grantees’ Poster Session
Collection
2015 ASEE Annual Conference & Exposition
Authors
Deborah Newberry, DCTC/Nano-Link
Tagged Topics
NSF Grantees Poster Session
Paper ID #13392Modification of Nanoscience Educational Content to Reach a Greater Num-ber of EducatorsDeb Newberry, DCTC/Nano-Link Deb Newberry is the director of the Nanoscience Technology program at Dakota County Technical Col- lege in Rosemount, MN where she created 8 college level nano specific courses and the 2 year, AAS degree Nanoscience Technologist program. Deb also is the Director and Principle Investigator of Nano-Link, Center for Nanotechnology Education which spans 38 states and 4 countries in Europe (NSF funded). After 23 years of experience as a researcher and executive in the corporate world, she became a nanotech
Conference Session
Assessment and Outcomes: ERM Roundtable
Collection
2015 ASEE Annual Conference & Exposition
Authors
Deborah M. Grzybowski, Ohio State University; John T. Demel, Ohio State University
Tagged Topics
Diversity
Tagged Divisions
Educational Research and Methods
day.” Eugene, Oregon :: International Society for Technology in Education, 2012.[7] R. Donnelly, “Harmonizing technology with interaction in blended problem-based learning. Computers & Education”, 54, 350–359, 2010.[8] R. M. Felder, R. Brent, and M. Prince, “Effective instructional development strategies,” Page 26.262.14 J.Eng.Educ., vol.100,no.1,pp.89–122, 2011.[9] G.S. Mason, T.R. Shuman, and K.E. Cook, “Comparing the Effectiveness of an Inverted Classroom to a Traditional Classroom in an Upper-Division Engineering Course.” IEEE Transactions on Education. 56, 4, 430-435, Nov. 2013.[10] R.M. Felder and J. Spurlin