Conference Session

Computer and InformationTechnology-Related Issues

Collection

2011 ASEE Annual Conference & Exposition

Authors

Malini Natarajarathinam, Texas A&M University

Tagged Divisions

Engineering Technology

). The exams are set such that 70% of the classshould be able to make at least a B. Then there are few questions to differentiate the A’s and theB’s. A possible assessment of learning for the class is provided in Table 2. Mandatory Class Attendance 50 Discussion Board Participation 50 In-Class Quizzes 100 Homework Assignments 150 Project 250 Midterm Exam 200 Final Exam 200 Total

Conference Session

Engineering as the STEM Glue

Collection

2011 ASEE Annual Conference & Exposition

Authors

Ben Pelleg, Drexel University; David Urias, Drexel University; Adam K. Fontecchio, Drexel University; Eli Fromm, Ph.D., Drexel University

Tagged Divisions

K-12 & Pre-College Engineering

., Jamieson, L, and Oakes, W. EPICS: Engineering Projects in Community Service. InternationalJournal of Engineering Education. Vol. 21, No. 1, 2005.11. Lamancusa, J., Jorgensen, J., Zayas-Castro, J., Ratner, J. The Learning Factory- A new approach to integratingdesign and manufacturing into engineering curricula. American Society for Engineering Conference Proceedings.1995.12. Bloom, B. S., Taxonomy of Educational Objectives, Handbook I: The Cognitive Domain. DavidMcKay Co. Inc. 1956.13. Wiggins, G. and McTighe, J. Understanding by Design. Association for Supervision and CurriculumDevelopment. 2005.14. Teach Engineering: Resources for K-12. http://www.teachengineering.com/submit_curricula.php15. “Academic standards for science and technology

Conference Session

Assessment in Engineering Graphics

Collection

2011 ASEE Annual Conference & Exposition

Authors

Robert A. Chin, East Carolina University

Tagged Divisions

Engineering Design Graphics

. With respect Page 22.1055.10to % Exit, GA is not sophisticated enough to ascertain the reason behind a given statistic.GA does provide a variety of statistics for assessing the performance of an online journal like theEDGJ. Future studies will profile the EDGJ site with respect to (a) the number of new andreturning visitors and how extensively they interact with the site’s content (Visitors reports)6; (b)drilling down into aspects of visit quality (i.e. average pageviews, time on site, bounce rate, etc)and visit characteristics (i.e. first time visitors, returning visits, etc); (c) the different kinds ofsources that send traffic to the EDGJ site

Conference Session

New Teaching Methods in Construction Eduction

Collection

2011 ASEE Annual Conference & Exposition

Authors

Ifte Choudhury, Texas A&M University

Tagged Divisions

Construction

Proceedings), 85(2), 101-112.13. Senior, B. A., (2008), “Correlation between absences and final grades in a college course,” Proceedings of the 44th Annual Conference of the Associated Schools of Construction, Auburn, Alabama, April 2-6, 2008, on CD- ROM.14. Bransford, J. D., Brown, A. L., & Cocking, R. R., (eds.), (1999), “How people learn: Brain, mind, experience, and school”, National Academy Press, Washington, D. C., Chap. 3, 39-66.15. Freeman, M. & McKenzie, J., (2001), “Aligning peer assessment with peer learning for large classes: the case for an online self and peer assessment system,” in Peer Learning in Higher Education, Boud, D., Cohen, R., & Sampson, J. (eds.), Kogan Page Ltd., London, Chap. 11

Conference Session

ETD Design II: Mechanical Engineering Technology

Collection

2011 ASEE Annual Conference & Exposition

Authors

Jason K. Durfee, Eastern Washington University

Tagged Divisions

Engineering Technology

as a laboratoryand how could the experience be improved? Page 22.1601.16 Appendix B Take – Home Exam used for theoretical calculations TECH 382 Fluid Mechanics Exam #3 Spring 2010 NAME: ______________________Open Book, Open Notes, TAKE HOME Exam, Due Monday at the Start of ClassShow all WorkWork your problems on Engineering Green Grid paper.This test requires

Conference Session

Student Learning and Teamwork

Collection

2011 ASEE Annual Conference & Exposition

Authors

Nina Robson, Texas A&M University

Tagged Divisions

Engineering Technology

AC 2011-1161: DEVELOPING TECHNOLOGIES THAT ENABLE INDI-VIDUALS WITH DISABILITIES: A UNIQUE DESIGN EXPERIENCENina Robson, Texas A&M University Page 22.462.1 c American Society for Engineering Education, 2011 Developing Technologies that Enable Individuals with Disabilities: A Unique Design ExperienceAbstractPeople with disabilities encounter a significant number of barriers and challenges, including lack ofemployment opportunities and access to adequate facilities. Today, over 60% of people withdisabilities do not have jobs. Lack of awareness about the challenges faced by persons

Collection

2011 Fall ASEE Middle Atlantic Section Conference

Authors

RUBA A. AMARIN; Issa Batarseh

77.8% for students who believed that the eTutor technique was beneficial and 3.7%for non effectiveness of the tool, the rest were neutral. Most students welcomed the new tool, whichreflected the importance of these on-line modules.VII. References [1] Issa Batarseh, Ghaith Haddad, Rawad Haddad and Rashad Oreifij, ‘Interactive Electronic BookOperating Systems And Methods,’ United States Patent 20080222552. [2] Ruba A. Amarin, Feras Batarseh and Issa Batarseh, ‘Adaptive electronic quizzing method forintroductory electrical circuit course’, International Journal of Online Engineering (iJOE), vol. 5, No3, 2009. [3] Ruba A. Amarin, Kalpathy B. Sundaram, and Arthur Weeks, ‘Importance of practical relevanceand design modules in electrical

Conference Session

Tricks of the Trade in Teaching II

Collection

2011 ASEE Annual Conference & Exposition

Authors

Jennifer A Turns, University of Washington

Tagged Divisions

New Engineering Educators

(a one-page document) containing a revised set of dimensions and an approach for coding these dimensions. Again, the milestone reports were used, in class, to discuss the project.4. Two days before the project was due, students were required to (a) give a “minute-madness” presentation to the class on their results and (b) bring a draft of their report to class for peer review.5. The group then submitted the final report two days later, after making revisions based on the peer review. In addition, individual group members submitted a written reflection on their learning through the project process.Description, Observation and ReflectionIn the next two sections, we further describe these two cases. Specifically, we describe each

Conference Session

Thermodynamics, Fluids, and Heat Transfer I

Collection

2011 ASEE Annual Conference & Exposition

Authors

Matthew A. Carr, U.S. Naval Academy

Tagged Divisions

Mechanical Engineering

. Page 22.1227.4the Savery pumpThomas Savery (c1650-1715), building on the work of the earlier philosophers and experimenterswho discovered atmospheric pressure, vacuum conditions, steam characteristics, and therelationships of pressure, area and force, designed the first practical pumping engine. Savery wasissued a patent for his pumping engine in 1698. His engine is shown in Figure 2. The principlecomponents were a “receiver” (R) connected to a suction pipe with a check valve (SV) and adischarge pipe (DP) also with a check valve (DV) installed. The receiver was connected to a boiler(B) via a steam pipe (SP) and steam control valve (SC). Another valve off the discharge pipe, thecondensing jet valve (CJ), allowed some of the water to drain from

Conference Session

Assessment Methods and Learning Pedagogy II

Collection

2011 ASEE Annual Conference & Exposition

Authors

Jyhwen Wang, Texas A&M University; Alex Fang, Texas A&M University; Michael Ryan Golla, Texas A&M University

Tagged Divisions

Engineering Technology

instructional tool to enhance learning,” 2010 Annual Conference and Exposition, 2010-1898, American Society for Engineering Education.5. Wu, B., “Improving a manufacturing class by adding an experimental session,” 2009 Annual Conference and Exposition, 2009-1118, American Society for Engineering Education.6. Jaksie, N., and Spencer, D., “A manufacturing processes laboratory: what book-making and sheet- metal working have in common,” 2009 Annual Conference and Exposition, 2009-98, American Society for Engineering Education.7. Hossain, N.M., and Durfee, J., “Testing several composite materials in a material science course under the engineering technology curriculum,” 2010 Annual Conference and Exposition, 2010-133, American Society for

Conference Session

Mechanical and Architectural Engineering Laboratories

Collection

2011 ASEE Annual Conference & Exposition

Authors

A. Simionescu, Texas A&M University, Corpus Christi; Mehrube Mehrubeoglu, Texas A&M University, Corpus Christi; Korinne Caruso, Texas A&M University, Corpus Christi; Gregory R. Reuter, Texas A&M University, Corpus Christi

Tagged Divisions

Division Experimentation & Lab-Oriented Studies

designed and machined by students on a Boxford miniature CNC lathe [3].For each of these assignments students work in teams of two-to-three members, and documenttheir laboratory experience and their observations upon the results obtained in formal technicalreports. The grades students receive are based on (a) the technical content of their reports,(b) the overall quality of the parts they fabricate, and (c) their individual contribution to the teamassignment, assessed through anonymous peer reviews as described in reference [4].The Evaporative-Pattern ProcessAnnually over 11 million tons of metal are cast worldwide, mainly for the automotive, aerospaceand household appliance markets5. Of these, over 8% are cast by the evaporative-patternprocess5

Conference Session

NSF Grantees Poster Session

Collection

2011 ASEE Annual Conference & Exposition

Authors

Bonnie Ferri, Georgia Tech; JillL L. Auerbach, Georgia Institute of Technology; Jennifer E. Michaels, Georgia Institute of Technology; Douglas B. Williams, Georgia Institute of Technology

Tagged Topics

NSF Grantees

AC 2011-2226: TESSAL: PORTABLE DISTRIBUTED LABORATORIESIN THE ECE CURRICULUMBonnie Ferri, Georgia Tech Bonnie Ferri received a BS from Electrical Engineering from Notre Dame in 1981, a MS in Mechanical and Aerospace Engineering from Princeton in 1984, and a PhD in Electrical Engineering from Georgia Tech in 1988. She is currently a Professor and Associate Chair for Graduate Affairs in ECE at Georgia Tech. Her research has been in the areas of embedded control systems, applications of control, control of computing systems, and education. She is the recipient of the 2007 IEEE Education Society Harriet B. Rigas Award.JillL L Auerbach, Georgia Institute of Technology Jill Auerbach is a Senior Academic Professional

Conference Session

New Developments in Teaching Electromagnetics and Related Topics

Collection

2011 ASEE Annual Conference & Exposition

Authors

Yong Xu, Virginia Tech; Kathleen Meehan, Virginia Tech; Cortney V. Martin, Virginia Tech; Alan B Overby; Xiangyu Wei, Virginia Tech

Tagged Divisions

Electrical and Computer

developed for the circuits courses, the experiments on EM concepts areconstructed based on instructional events:11 gain attention, state objectives, activate priorknowledge, present material, provide learning guidance, motivate practice, and providefeedback. A template based upon these events has been developed and is completed during thedesign of the experiment so that each event is presented to the students in a systematic manner.The template, which becomes the experimental procedure, has the following sections.(a) Learning Objectives: The expected knowledge that the students will gain from theexperiment including a deeper understanding of one-to-two concepts explored in the experiment.(b) Preparation: The sections of the textbook in which the

Conference Session

Teaching Analog and Digital Communication: Novel Ideas for Lecture Courses, Laboratories, and Projects

Collection

2011 ASEE Annual Conference & Exposition

Authors

Ratchaneekorn Thamvichai, Saint Cloud State University; Tonya Lynette Smith-Jackson, Virginia Tech; Carl B Dietrich P.E., Virginia Tech; Tamal Bose, Virginia Tech

Tagged Divisions

Electrical and Computer

digital signal processing.Dr. Tonya Smith-Jackson, Virginia Tech Dr. Smith-Jackson is an Associate Professor in the Grado Department of Industrial and Systems Engi- neering. Her specialty areas are cognitive ergonomics and system safety.Carl B. Dietrich, Jr., Virginia Tech Carl Dietrich is a research faculty member at Virginia Tech, where he completed Ph.D. and M.S. de- grees after graduating from Texas A&M University. He worked with the Defense Information Systems Agency, Arlington, Virginia and Bell Northern Research, Richardson, Texas and conducted research on adaptive and diversity antenna systems and radio wave propagation. His current work in software defined radio (SDR) includes leading projects

Conference Session

Innovative Instructional Strategies and Curricula in ECE I

Collection

2011 ASEE Annual Conference & Exposition

Authors

MaryPat Beaufait; Duyun Chen, University of Pennsylvania; Carl B Dietrich P.E., Virginia Tech; Cecile Dietrich; Garrett Michael Vanhoy, University of Arizona

Tagged Divisions

Electrical and Computer

AC 2011-2420: TRANSITION FROM UNDERGRADUATE RESEARCH PRO-GRAM PARTICIPANTS TO RESEARCHERS AND OPEN SOURCE COM-MUNITY CONTRIBUTORSMaryPat BeaufaitDuyun Chen, University of Pennsylvania Undergraduate, Junior in Bioengineering at the University of Pennsylvania with interest in Computer and Biomedical Science.Carl B. Dietrich, Jr., Virginia Tech Carl Dietrich is a research faculty member at Virginia Tech, where he completed Ph.D. and M.S. de- grees after graduating from Texas A&M University. He worked with the Defense Information Systems Agency, Arlington, Virginia and Bell Northern Research, Richardson, Texas and conducted research on adaptive and diversity antenna systems and radio wave propagation. His

Conference Session

Research on Engineering Design Education

Collection

2011 ASEE Annual Conference & Exposition

Authors

Carla B. Zoltowski, Purdue University, West Lafayette; William C. Oakes, Purdue University, West Lafayette; Monica E Cardella, Purdue University, West Lafayette

Tagged Divisions

Educational Research and Methods

AC 2011-1244: PHENOMENOGRAPHIC STUDY OF HUMAN-CENTEREDDESIGN: EDUCATIONAL IMPLICATIONSCarla B. Zoltowski, Purdue University, West Lafayette CARLA B. ZOLTOWSKI, Ph.D., is Education Administrator of the EPICS Program at Purdue Univer- sity. She received her B.S. and M.S. in Electrical Engineering and Ph.D. in Engineering Education, all from Purdue University. She has served as a lecturer in Purdue’s School of Electrical and Computer Engineering.William C. Oakes, Purdue University, West Lafayette William Oakes is the Director of the EPICS Program at Purdue University, one of the founding faculty members of the School of Engineering Education and a courtesy faculty member in Mechanical Engi- neering and Curriculum

Conference Session

ETD Design I: Electrical and Computer Engineering Technology

Collection

2011 ASEE Annual Conference & Exposition

Authors

Wei Zhan, Texas A&M University; Ana Elisa P. Goulart, Texas A&M University; Joseph A. Morgan, Texas A&M University; Jay R Porter, Texas A&M University

Tagged Divisions

Engineering Technology

course project; Control algorithm will then be developed in theControls course project based on what the students developed in the Instrumentation course; themotor with instrumentation and control may be used in a senior design project as the actuationpart of the overall system. This way, students’ educational experience becomes seamlesslyintegrated into a continuous flow. Additional platforms may also be identified for other courseswhere a DC motor is not an appropriate application platform.REFERENCES1. Allen, D. E., Duch, B. J., and Groh, S. E., “The Power of Problem-Based Learning in Teaching Introductory Science Courses,” in Wilkerson, L. and W.H. Gijselaers, eds., New Directions for Teaching and Learning, No. 68, pp.3-11, San Francisco

Conference Session

Integrating Technical Research into Professional Development and K-12 Classrooms

Collection

2011 ASEE Annual Conference & Exposition

Authors

Muhittin Yilmaz, Texas A&M University, Kingsville; Carlos A. Garcia, Texas A&M University, Kingsville; Tamara D. Guillen, Texas A&M University, Kingsville; David Ramirez, Texas A&M University, Kingsville

Tagged Divisions

K-12 & Pre-College Engineering

, students were able to explore interests in various engineering fields and applyresearch strategies and fundamental engineering concepts to daily life items.The student short answers to open-ended questions suggested important conclusions aboutdifferent camp components; a) the ‘What did you like best about ESF?’ question indicated thataround ten students liked most the hands-on research experience during the ESF camp while theremaining students expressed different factors such as learning new software, professor andgraduate assistant involvement; b) a lack of time for project documentation as well as oralpreparation and long camp days appeared to be the ESF camp least liked components, assuggested in responses to the ‘What did you like least about

Collection

2011 Northeast Section Meeting

Authors

Biswanath Samanta

can be obtained from the relevant articles.4.1 Engineering System Diagnostics and Prognostics [30, 33-36, 40-43] Feature selection is an important issue in many real-world problems. Hybrid CI techniques have beenproposed for feature selection in machine condition monitoring, detection, diagnosis and prognostics.Figures 1(a), (b) and (c) show the role of a hybrid CI combination (GA and PNN) in separation of thedata clusters for machine condition detection compared to principal component analysis (PCA). Theclassification success the CI (100%) is much higher than PCA (66%) [35]. Proceedings of the 2011 ASEE Northeast Section Annual Conference, University of Hartford Copyright © 2011, American Society for

Collection

2011 ASEE Midwest Section Conference

Authors

Monty J. Smith; Lakshmi Sudhaker

solution is of the form x h (t )  e ( w t ) (C cos(wd t )  D sin( wd t )) n (3)where the constants C  x(0) and D  ( x(0)  wn x(0)) / wd are determined from the substitution of the initial conditions on the state x(t ) and the derivative x(t ) at time t  0 . In addition, the particular solution is the superposition of the cosine and sine functions (to account for phase) withconstants A and B as follows

Conference Session

Outreach Projects: Promoting Energy Efficiency and Education in General

Collection

2011 ASEE Annual Conference & Exposition

Authors

Mysore Narayanan, Miami University

Tagged Divisions

Energy Conversion and Conservation

capable of handlingthe principles of vector calculus and have a strong knowledge of dot products and cross products.Effective utilization of MATLAB has helped in this case. However, the students are havingdifficulty in understanding the other three topics, including Navier-Stokes’ equations.Appendix A show the procedure followed by the author for conducting assessment.Appendix B outlines a set of rubrics used, courtesy of Washington State University.Appendix C shows how holistic grading can be carried out using an Excel Spreadsheet.Appendix D shows a bar chart analysis of the data collected.Appendix E shows an analysis of data gathered.Appendix F shows how the operator NABLA is used

Conference Session

Educational Research and Methods Potpourri II

Collection

2011 ASEE Annual Conference & Exposition

Authors

James E. Lewis, University of Louisville; Cathy Bays

Tagged Divisions

Educational Research and Methods

AC 2011-941: UNDERGRADUATE ENGINEERING STUDENTS AND CRIT-ICAL THINKING: A PRELIMINARY ANALYSISJames E. Lewis, University of Louisville James E. Lewis, Ph.D. is an Assistant Professor in the Department of Engineering Fundamentals in the J. B. Speed School of Engineering at the University of Louisville. His research interests include paral- lel and distributed computer systems, cryptography, engineering education, undergraduate retention and technology (Tablet PCs) used in the classroom.Dr. Cathy Bays Page 22.1566.1 c American Society for Engineering Education, 2011 Undergraduate

Conference Session

Engineering Mechanics Education

Collection

2011 ASEE Annual Conference & Exposition

Authors

Peter Schuster, California Polytechnic State University

Tagged Divisions

Mechanical Engineering

and stress are provided.The closed-form analysis is conducted using Castigliano’s method. Beam and shell finiteelement models are built and analyzed in Abaqus CAE. Structural prototypes are constructedwith PASCO Structures System components and tested with simple weights and scales.The strengths of this combined approach are that the students (a) gain experience with the threedifferent methods of stress/deflection analysis, (b) compare the different methods on a singleproblem, and (c) check or confirm their own results. By using existing finite element softwarelicenses and available PASCO components, the project took no additional lab time and noadditional cost to implement.Since the first use of this lab project was with in a small class, no

Conference Session

Mechanical Engineering Laboratories I

Collection

2011 ASEE Annual Conference & Exposition

Authors

Charles Forsberg, Hofstra University

Tagged Divisions

Mechanical Engineering

AC 2011-1108: A DIMENSIONAL ANALYSIS EXPERIMENT FOR THEFLUID MECHANICS CLASSROOMCharles Forsberg, Hofstra University Charles H. Forsberg is an Associate Professor of Engineering at Hofstra University, where he primarily teaches courses in the thermal/fluids area. He received a B. S. in Mechanical Engineering from Polytech- nic Institute of Brooklyn and an M. S. in Mechanical Engineering and Ph. D. from Columbia University. He is a Licensed Professional Engineer in New York State. Page 22.37.1 c American Society for Engineering Education, 2011 A Dimensional Analysis

Conference Session

Status of CE Education: Today & Tomorrow

Collection

2011 ASEE Annual Conference & Exposition

Authors

Jeffrey S. Russell, University of Wisconsin, Madison; Joshua M. Rogers, University of Wisconsin, Madison; Thomas A. Lenox , Dist.M.ASCE, F.ASEE, American Society of Civil Engineers; Dion K. Coward, American Society of Civil Engineers

Tagged Divisions

Civil Engineering

twentyyears of data. It is noteworthy that the M/B ratio for all engineering disciplines (which includesthe “Big Four”) over this same period is approximately 50%. It is logical to conclude that thiscomparatively higher M/B ratio for all engineering disciplines might mean that (a) the number ofMaster’s degrees are influenced by an influx in international students interested in graduate studyand research, (b) a higher proportion of the students of the “newer” and smaller engineeringdisciples are pursuing advanced degrees, and/or (c) many of the “Big Four” baccalaureatestudents are changing the focus of their studies while pursuing an advanced degree. An analysis

Conference Session

Digital Simulation Tools in Energy Education

Collection

2011 ASEE Annual Conference & Exposition

Authors

Laura J. Genik, Michigan State University; Craig W. Somerton, Michigan State University

Tagged Divisions

Energy Conversion and Conservation

., “Incorporating MatLabin the mechanical engineering courses at Alabama A&M university”, Proceedings ASEE Annual Conference andExposition, 2002.10. Shih, Chiang and Alvi, Farrukh, “An Integrated Thermal and Fluids Curriculum”, Proceedings ASEE AnnualConference and Exposition, 2000.AppendixA1 Course Learning Objectives1. Basic Concepts a. Students can identify control volumes, closed systems, and transient systems b. Students can apply the state principle c. Students can work in different unit sets d. Students can identify intensive and extensive properties e. Students understand the concept of equilibrium f. Students can apply conservation of mass2. Property Evaluation a. Students can recognize

Conference Session

Innovations in Teaching: Statics

Collection

2011 ASEE Annual Conference & Exposition

Authors

Christine Valle, Georgia Institute of Technology; Sue Rosser, San Francisco State University; Janet H Murray, Georgia Tech; Wendy C. Newstetter, Georgia Institute of Technology; John D. Leonard II, Georgia Institute of Technology; Laurence J. Jacobs, Georgia Institute of Technology

Tagged Divisions

Mechanics

). Page 22.935.7Figure 4 – Moment equation in 3D with explicit vector formulationThe problem in Figure 4 is that of a plate weighing 500N supported by 3 people (located atpoints A, B, C) exerting vertical forces pointing straight up. Finally, a 3D FBD requires a“joystick” to be able to navigate the 3D environment and rotate in any direction (see Figure 5). Page 22.935.8Figure 5 – Rotation controls in 3D (top right corner)In this manner, InTEL allows students to approach 3-D statics problems in a visual, hands-onmanner. The student can use the rotation controls to pan and rotate the camera view on theproblem space. Students compose the moment vector

Conference Session

Digital Technologies and Learning

Collection

2011 ASEE Annual Conference & Exposition

Authors

John Chen, California Polytechnic State University; Christine A. Victorino, California Polytechnic State University, San Luis Obispo; Charles Birdsong, California Polytechnic State University, San Luis Obispo; Unny Menon, California Polytechnic State University, San Luis Obispo; Marilyn Tseng, California Polytechnic State University, San Luis Obispo; Tyler Scott Smith

Tagged Divisions

Educational Research and Methods

slightly from this, but only the common questions between thethree surveys (#1 through #12) and the open-ended comments were analyzed and compared. Page 22.109.6ME 422 SurveyFor the purpose of this survey, [online textbook] materials include Assignments, Quizzes, ReadingContent, Cases, Video Clips, Simulations, MP3 Files, Interactive Learning Resources, Flash Cards,and Crossword Puzzles. 1. I reviewed [online textbook] materials on a weekly basis, outside of the classroom. a. Strongly Disagree b. Disagree c. Neutral (neither agree nor disagree) d. Agree e. Strongly Agree 2. The [online

Conference Session

Persistence and Retention I

Collection

2011 ASEE Annual Conference & Exposition

Authors

Qu Jin, Purdue University, West Lafayette; P.K. Imbrie, Texas A&M University; Joe J.J. Lin, Purdue University, West Lafayette; Xingyu Chen, Purdue University

Tagged Divisions

Educational Research and Methods

outputs. The classificationthreshold for the three models was set to allow 25% of students be predicted as at risk. Predictionof retention was evaluated based on overall prediction accuracy, probability of detection (POD)for retained students, and probability of detection (POD) for non-retained students. Prediction ofGPA was evaluated based on sum of squared errors (SSE) 18. The following table and equationsdefine these terms: Predicted Retained Non-Retained Retained a b Actual Non-Retained

Conference Session

Manufacturing Poster Session

Collection

2011 ASEE Annual Conference & Exposition

Authors

R. Radharamanan, Mercer University

Tagged Divisions

Manufacturing

printingis accomplished, what resources are required to maintain it for the user, and which 3D printingsystem is the most reliable. One of the major unaddressed concerns of the owners of open source3D printers was the waste associated with printing and how the waste can be recycled or reused.Even if a print comes out perfectly there are support materials for any overhang structures and agrid that helps the part grip the surface that it is printing on. In the learning process also many Page 22.424.3misprint can occur (Figure 1). (a) (b) (c)Figure 1. Waste in 3D printing: (a) support