Conference Session

NSF Grantees Poster Session

Collection

2009 Annual Conference & Exposition

Authors

Trey Shirley, Clemson University; John Wagner, Clemson University; Randy Collins, Clemson University; Anand Gramopadhye, Clemson University

activities. A series of laboratoryassignments have been developed for students to gain hands-on experience with electronics,programmable logic controllers, industrial robots, conveyors, instrumentation, and dataacquisition. The initial exercises establish a basis to program and network multiple PLCs,command the movement of a robotic arm, and then integrate these elements into a smartconveyor system under automated control for product distribution. The remaining laboratoryactivities focus on electronic circuits, and vibration experiments with accompanying dataacquisition and theoretical analysis. Lastly, a design project offers an open-ended multi-facetedopportunity to apply a robotic arm, conveyors, bar code reader, color sensor, and networkedPLCs

Conference Session

Laboratories in Engineering Technology

Collection

2009 Annual Conference & Exposition

Authors

Jason Durfee, Eastern Washington University; N.M. Hossain, Eastern Washington University

Tagged Divisions

Engineering Technology

numbers with tabulatedmaterial data. Now that the students have all of these properties of the material they can make aneducated guess as to what material the screws were made from, what possible hardening processit went through, and, ultimately, they can answer the original question: “Should I be concernedabout the large ceiling fan hanging over my bed?” Page 14.1174.12MethodologyThe following flowchart summarizes the steps in performing the laboratory exercise. Initial Problem Statement: “What material is the fastener made from & Will it successfully hold the ceiling fan

Conference Session

Structural Education Methods

Collection

2009 Annual Conference & Exposition

Authors

Hector Estrada, University of the Pacific; Luke Lee, University of the Pacific

Tagged Divisions

Architectural

structural dynamics material into the earthquakeengineering course.A review of the literature did not yield much information about teaching difficult earthquakeengineering concepts. The fundamental approach in published research on undergraduateearthquake engineering education has been the development of web-based simulation tools1 andthe development of bench-top physical modeling tools (such as shake tables)2, 3. The mainobjective of both approaches is to provide a conceptual understanding of a wide range ofearthquake engineering related topics. One other objective is to use these tools for outreach topotential future earthquake engineering students. The current direction of undergraduateearthquake engineering education lacks the substance required

Conference Session

Multidisciplinary Curriculum Innovation

Collection

2009 Annual Conference & Exposition

Authors

Michael Ciaraldi, Worcester Polytechnic Institute; Eben Cobb, Worcester Polytechnic Institute; David Cyganski, Worcester Polytechnic Institute; Michael Demetriou; Greg Fischer; Michael Gennert, Worcester Polytechnic Institute; Fred Looft, Worcester Polytechnic Institute; William Michalson, Worcester Polytechnic Institute; Bradley Miller, Worcester Polytechnic Institute; Taskin Padir, Worcester Polytechnic Institute; Yiming Rong, Worcester Polytechnic Institute; Kenneth Stafford, Worcester Polytechnic Institute; Gretar Tryggvason, Worcester Polytechnic Institute; James Van de Ven, Worcester Polytechnic Institute

Tagged Divisions

Multidisciplinary Engineering

and innovation, and focus on technology that has an obvious impact on how peoplelive.Since the initiation of the RBE major, RBE 1001, RBE 2001 and RBE 2002 have been taughtseveral times with some “tweaking” occurring along the way. RBE 3001 and RBE 3002 arebeing taught for the first time during the 2008/2009 academic year. Student course evaluationsgenerally indicate a high level of student satisfaction with the courses, particularly for RBE 1001and RBE 2002 (generally well over 4, on a scale of 1-5). Ratings for RBE 2001 have been high,but slightly lower. As expected the overall satisfaction with the course usually correlate wellwith the students rating of the instructor. The students are also asked how many hours they spendon the course and

Conference Session

Issues and Opportunities in IE Education

Collection

2009 Annual Conference & Exposition

Authors

J. Eric Bickel, University of Texas, Austin

Tagged Divisions

Industrial Engineering

avoid guessing and instead assigntheir true beliefs. Such a scoring function is known as a strictly proper scoring rule. In this paper,we discuss several different scoring rules and demonstrate how their use in testing situationsprovides insights for both students and instructors.BackgroundIn several graduate industrial engineering / operations research programs (e.g., StanfordUniversity, The University of Illinois at Urbana-Champaign, and The University of Texas atAustin), students face a unique grading system on their midterm exams, which are multiplechoice. This grading scheme is also used in an undergraduate decision analysis course atStanford University. Rather than simply marking the answer that they think is correct (or mostlikely to be

Conference Session

Engineering Ethics V

Collection

2009 Annual Conference & Exposition

Authors

Douglas Oliver, University of Toledo

Tagged Divisions

Engineering Ethics

leaking CRDM flange. He initiated a campaign to prepare for clean up and Page 14.1371.3repairs on the next fuel outage, scheduled for the next spring in 2000. 2FIG. 2 “White Photo” illustrating boric acid FIG. 3 “Red Photo” illustrating boric acid onon the reactor head. Photo taken in 1998. the reactor head. Photo taken in 2000.Photo: OhioCitizen.org. Photo: Ens-newswire.com. To facilitate cleaning Siemaszko requested that access holes be added. The request wasdenied as requiring too much time

Conference Session

Innovative Techniques for Freshmen (0630)

Collection

1996 Annual Conference

Authors

Mark A. Palmer, Rensselaer Polytechnic Institute; John B. Hudson, Rensselaer Polytechnic Institute

real data, with the assistance of an instructor, one is able to illustrateexperimental error.Demonstrations and Experiments As mentioned above, an integral portion of the interactive approach is the presentationof hands-on experiences both in the classroom and in an accompanying laboratory. A summaryof the demonstrations and laboratories developed for this course is given below:First Semester1. Conservation of Energy 1996 ASEE Annual Conference Proceedings Page 1.276.5 A putty ball was raised above a table top, then released. It was explained that as the ball fell, the initial potential

Collection

1996 Annual Conference

Authors

Vipin Kumar; Miguel Torres; Jens Jorgensen; John Lamancusa

of engineering. Too often these are promising minority or female students, to whom this lack ofrelevance and stimulation is sometimes the straw that breaks the camels back. Just as one cannot learn todrive without getting behind the wheel; or to swim without getting wet; entry into the profession ofengineering, particularly in the area of design, requires far more than sitting in a lecture hall.1.3 Changing Engineering Education The National Science Foundation has recognized the opportunities to improve engineering educationand is providing impetus to change by sponsoring several major education initiatives and coalitions 6

Conference Session

Environmental Engineering Curricula

Collection

2009 Annual Conference & Exposition

Authors

Audra Morse, Texas Tech

Tagged Divisions

Environmental Engineering

Page 14.223.5Teaching evaluation data was collected for 6 teaching assistants. The teaching evaluation scoreswere collected from the Data Warehouse managed by Institutional Research and DataManagement Warehouse, which is located on the TTU webpage. The teaching evaluations areperformed at the end of each semester and the students enrolled in the course assigned numericalvalues to 16 evaluation questions. The highest achievable value is a 5; lowest value is 1. Thequestions asked on the teaching evaluation form are: 1. Overall this instructor was effective 2. The instructor was available for consultation during office hours or by appointment 3. The instructor stimulated student learning 4. The instructor treated all

Conference Session

Computer Education Innovations

Collection

2009 Annual Conference & Exposition

Authors

Thomas Cochrane, University of Canterbury

Tagged Divisions

Computers in Education

AC 2009-669: ENHANCING THE ORAL-PRESENTATION SKILLS OFENGINEERING STUDENTS: TECHNOLOGY TO THE RESCUE WITH THEVIRTUAL-I PRESENTER (VIP)Thomas Cochrane, University of Canterbury Tom A. Cochrane is a senior lecturer (US associate professor) in the Dept. of Civil and Natural Resources Engineering at the University of Canterbury, New Zealand. He teaches and does research in hydrology, natural resources engineering, GIS, and soil/water conservation. Dr Cochrane received his M.Sc. and Ph.D. from Purdue University. Page 14.574.1© American Society for Engineering Education, 2009 Enhancing oral presentation

Conference Session

Electrical ET Projects and Applications

Collection

2006 Annual Conference & Exposition

Authors

Christopher Root, Bloomsburg University; Biswajit Ray, Bloomsburg University

Tagged Divisions

Engineering Technology

independent research course.Power converter specificationsInput voltage: 22 – 32 VDCOutput voltage: 30 VDC ± 5%Output voltage ripple: 1% (peak-to-peak)Output load: 0 A (no-load) to 12 A (full load)Isolation: Not requiredUndervoltage lockout: ON @ 21 V and OFF @ 19 VSwitching frequency: 200 kHzFull-load efficiency: 85%Protection scheme: Cycle-by-cycle current limitPower converter topologyBased on the input and output voltage and full-load power (360 W) specifications, a transformerisolated forward converter1 topology was selected for the design. To protect the converter fromexcessive current draw due to under voltage conditions, an undervoltage lockout (UVLO) circuitwas implemented that turns on the converter when input voltage exceeds 21 V and turns

Conference Session

ChE: Poster Session

Collection

2006 Annual Conference & Exposition

Authors

Keith Lodge, University of Minnesota-Duluth

Tagged Divisions

Chemical Engineering

depth and breadth oftheir educational material3 is particularly useful for those individuals who, like me, are new tothe field. My research interests are not in process control and I took over the course after thedeparture of a specialist in the field. I have the single advantage of being an experimentalist.The preparation started in the summer of 2001; this exercise would not have been possible wereit not for my single semester leave in the fall of 2001. During this time, I attended one of theregular two-day short courses organized for educators by Parallax4. On the BOE, one assembles the desired circuit on a breadboard affixed to a printed circuitboard; this contains the microcontroller, connections for power sources (wall transformer, or

Conference Session

New Horizons in Academic Integrity

Collection

2006 Annual Conference & Exposition

Authors

Murali Krishnamurthi, Northern Illinois University; Jason Rhode, Northern Illinois University

Tagged Divisions

Engineering Ethics

2006-1104: PROMOTING ACADEMIC INTEGRITY THROUGH AN ONLINEMODULEMurali Krishnamurthi, Northern Illinois University MURALI KRISHNAMURTHI is Associate Professor of Industrial and Systems Engineering and Director of Faculty Development and Instructional Design Center at Northern Illinois University. His teaching and research interests include information systems, project management, optimization, simulation, and engineering ethics.Jason Rhode, Northern Illinois University JASON RHODE is the Online Technologies Coordinator at the Faculty Development and Instructional Design Center at Northern Illinois University. He has a master's degree in Curriculum and Instruction, and is currently a Ph.D

Conference Session

Recruiting and Retention

Collection

2006 Annual Conference & Exposition

Authors

Carol Richardson, Rochester Institute of Technology

Tagged Divisions

Engineering Technology

institute-wide program began with the 2002 freshman class and had75 freshman students in the program. CAST had two freshman students in the Honorsprogram in 2002 and six in 2004 so this program has not had a significant effect on ETfreshman retention. Larger numbers of freshman honors students enter other RIT STEMprograms. The Honors Program provides students with an enhanced honors curriculum,a cohesive and diverse community of faculty, staff, and students, and specialopportunities for research, conferences, travel, study abroad, and cooperative education.The intent of the RIT Honors Program is to enrich our academic endeavors, further ourpersonal growth through leadership, foster a sense of unity, promote service in thecommunity, and develop

Conference Session

ChE: Innovation in Existing Courses

Collection

2006 Annual Conference & Exposition

Authors

Barry Barkel, University of Michigan; Peter Woolf, University of Michigan

Tagged Divisions

Chemical Engineering

systems to reinforce the principles. A team basedproject is also assigned where students are given basic chemistry and processingrequirements and are required to assemble appropriate equipment and develop the P&IDof their system showing all instrumentation and the interrelationships among sensor andcontrol devices.Control in Biological Systems.Control in and of biological systems had not previously been included in the Michigancontrol course. The strong emergence of biological options in chemical engineering hasmade it imperative to expose students to this area and to demonstrate that, in general, thesame control issues apply to living organisms and large chemical complexes alike. Inaddition, research into biological control mechanisms has

Conference Session

Design of Laboratory Experiments

Collection

2006 Annual Conference & Exposition

Authors

Lisa Huettel, Duke University

Tagged Divisions

Division Experimentation & Lab-Oriented Studies

2006-1246: INTEGRATION OF A DSP HARDWARE-BASED LABORATORY INTOAN INTRODUCTORY SIGNALS AND SYSTEMS COURSELisa Huettel, Duke University LISA G. HUETTEL, Ph.D., is an Assistant Professor of the Practice and Director of Undergraduate Laboratories in the Department of Electrical and Computer Engineering at Duke University. Her research interests include the application of statistical signal processing to remote sensing and engineering education. She received her M.S. and Ph.D. in Electrical Engineering from Duke University. Page 11.797.1© American Society for Engineering Education, 2006

Conference Session

Electrical and Computer Division Technical Session 9

Collection

2017 ASEE Annual Conference & Exposition

Authors

Bridget Benson, California Polytechnic State University, San Luis Obispo; Fred W. DePiero, California Polytechnic State University, San Luis Obispo

Tagged Divisions

Electrical and Computer

University San Luis Obipso. Her research interests span engineering education, internationalization and embedded systems.Dr. Fred W. DePiero, California Polytechnic State University, San Luis Obispo Dr. Fred DePiero received his B.S. and M.S. degrees in Electrical Engineering from Michigan State Uni- versity in 1985 and 1987. He then worked as a Development Associate at Oak Ridge National Laboratory until 1993. While there he was involved in a variety of real-time image processing projects and several laser-based ranging systems. Fred began working on his Ph.D. at the University of Tennessee while still at ORNL, and completed it in May 1996. Fred joined the faculty at CalPoly in September of 1996. He is presently serving

Conference Session

Enhancing Instruction in Statics, Dynamics, Mechanics

Collection

2017 ASEE Annual Conference & Exposition

Authors

Rania Al-Hammoud P.Eng., University of Waterloo

Tagged Divisions

Mechanics

Paper ID #18373Molding the Interactive Flipped Classroom Based on Students’ FeedbackDr. Rania Al-Hammoud P.Eng., University of Waterloo Dr. Al-Hammoud is a Faculty lecturer (Graduate Attributes) in the department of civil and environmental engineering at the University of Waterloo. Dr. Al-Hammoud has a passion for teaching where she con- tinuously seeks new technologies to involve students in their learning process. She is actively involved in the Ideas Clinic, a major experiential learning initiative at the University of Waterloo. She is also re- sponsible for developing a process and assessing graduate attributes at

Conference Session

Mathematics Division Technical Session 2

Collection

2017 ASEE Annual Conference & Exposition

Authors

Hui Ma, University of Virginia; Gianluca Guadagni, University of Virginia; Stacie N. Pisano, University of Virginia, School of Engineering and Applied Science; Bernard Fulgham, University of Virginia; Monika Abramenko, University of Virginia; Diana D Morris, University of Virginia

Tagged Divisions

Mathematics

Paper ID #19636Redesign of Calculus Curriculum in EngineeringDr. Hui Ma, University of Virginia Hui Ma received her Ph.D. in applied mathematics from the University of Alabama at Birmingham in 2012. Her current research focuses on the Errors-In-Variables (EIV) model and fitting geometric curves and surfaces to observed data points. Before joining the University of Virginia (UVA), she worked as an assistant professor at Black Hills State University for two years. In her current role as an APMA faculty member at UVA, she teaches applied math courses to engineering students. Her goals in teaching are to help students

Conference Session

Electrical and Computer Division Technical Session 3

Collection

2017 ASEE Annual Conference & Exposition

Authors

Arnold Stanley Berger PhD, University of Washington, Bothell

Tagged Divisions

Electrical and Computer

projects.These surplus instruments became the main motivator for development of the remote EE labs sinceseveral of our Capstone teams had discovered them and decided to build them into their Capstoneprojects.IIIa. remote accessRemote access for laboratory experiments has been an active area of educational research for almostas long as the internet has been the enabling technology for complex data and graphical interchangeusing web browsers. The International Association of Online Engineering and the InternationalAcademy of Technology, Education, and Development sponsors the annual Remote Engineering andVirtual Instrumentation Conference and the annual International Technology, Education, andDevelopment Conference, respectively[15,16].Nedic and Machotka

Conference Session

ETD Manufacturing/3D Printing

Collection

2017 ASEE Annual Conference & Exposition

Authors

Wei Dai Vian, Purdue University, West Lafayette (College of Engineering); Nancy L. Denton, Purdue University, West Lafayette (College of Engineering)

Tagged Divisions

Engineering Technology

Paper ID #20135Design of Polymer Processing Activities for Pre-College StudentsDr. Wei Dai Vian, Purdue University, West Lafayette (College of Engineering) Wei Vian is a clinical assistant professor in the program of Mechanical Engineering Technology at Purdue University Statewide Kokomo campus. She got her Ph.D from Purdue University, West Lafayette. She got her bachelor and master degree both from Eastern Michigan University. Her recent research inter- ests include grain refinement of aluminum alloys, metal casting design, and innovation in engineering technology education.Prof. Nancy L. Denton, Purdue University, West

Conference Session

Design in Engineering Education Division: Design Methodology

Collection

2019 ASEE Annual Conference & Exposition

Authors

Lisa A. Shay PE, U.S. Military Academy; Tanya Thais Estes, United States Military Academy; David Paul Harvie, United States Military Academy

Tagged Divisions

Design in Engineering Education

their capstone project.This is an exercise with multiple dimensions, technical and interpersonal. The teams have astressful time constraint: only a few lessons in which to demonstrate a prototype. A workingprototype requires both hardware and software components that must be appropriately integrated.Since the teams consist of students from different majors, most are working together for the firsttime. This initial exercise encourages the students to quickly bond as a team. Finally, this projectis distinct from their capstone project for two reasons: First, it gives the team a smaller-scopeproject to experience a full design cycle before embarking on their capstone. Second, if thisrobotics project is unsuccessful, it allows the team to have a

Conference Session

Curriculum Development in Technological Literacy

Collection

2020 ASEE Virtual Annual Conference Content Access

Authors

R. Alan Cheville, Bucknell University; John Heywood, Trinity College Dublin

Tagged Topics

Diversity

Tagged Divisions

Technological and Engineering Literacy/Philosophy of Engineering

interested in engineering design education, engineering education policy, and the philosophy of engineering education.Prof. John Heywood, Trinity College Dublin John Heywood is professorial Fellow Emeritus of Trinity College Dublin- The University of Dublin. he is a Fellow of ASEE and Life Fellow of IEEE. he is an Honorary Fellow of the Institution of Engineers Ireland. He has special interest in education for the professions and the role of professions in society. He is author of Engineering Education. Research and Development in Curriculum and Instruction; The Assessment of Learning in Engineering Education; The Human Side of Engineering, and Empowering Professional Teaching in Engineering

Conference Session

Two-year College STEM Programs Meeting the Needs of Industry

Collection

2018 ASEE Annual Conference & Exposition

Authors

David I. Spang, Rowan College at Burlington County; Eric Constans, Rose-Hulman Institute of Technology; Edem G. Tetteh, Rowan College at Burlington County

Tagged Divisions

Two-Year College

academia, Dr. Spang spent nearly twenty years in R&D and business development.Dr. Eric Constans, Rowan University Eric Constans is an Associate Professor in Mechanical Engineering at Rowan University. His research interests include engineering education, mechanical design and acoustics and vibration.Dr. Edem G. Tetteh, Rowan College at Burlington County Edem G. Tetteh is Assistant Vice President for Academic Affairs and Associate Professor at Paine College. He has previously held a faculty position in the Industrial and Logistics Technology (INLT) program in the Department of Technology at Virginia State University. He received his B.S. in manufacturing systems and a M.S. in industrial engineering both from North

Conference Session

Educational & Professional Issues of Strategic Importance to the Civil Engineering Profession and ASCE II

Collection

2018 ASEE Annual Conference & Exposition

Authors

Horst Brandes P.E., University of Hawaii; Joe D. Manous Jr, U.S. Army Corps of Engineers; Kenneth J. Fridley, University of Alabama

Tagged Topics

Diversity

Tagged Divisions

Civil Engineering

attainment of a civil engineering body ofknowledge for entry into the practice of civil engineering in its Policy Statement 465 [3], firstadopted in 1998. The initial edition of this body of knowledge (CE-BOK1) was published in2004 and defined the knowledge, skills, and attitudes (KSA) required of an individual enteringthe practice of civil engineering at the professional level. At the time, it was considered agroundbreaking document and it received considerable attention and praise.While a body of knowledge is essential to the idea of professionalism, it can quickly becomeobsolete in the face of changes in knowledge, technology and the marketplace of professions. Inorder to remain effective, and for the profession to stake firm jurisdictional

Conference Session

Girls in Engineering

Collection

2018 ASEE Annual Conference & Exposition

Authors

Rafic Bachnak, Pennsylvania State University, Harrisburg, The Capital College; Susan Kathryn Eskin, Pennsylvania State University, Harrisburg, The Capital College; Sara Love, Penn State Harrisburg

Tagged Topics

Diversity

Tagged Divisions

Pre-College Engineering Education

status of science, technology, engineering, and mathematics education in the United States. 2006. 26 pages.4. National Academies of Sciences, E., and Medicine, Barriers and Opportunities for 2-Year and 4-Year STEM Degrees: Systemic Change to Support Students' Diverse Pathways. The National Academies Press. Washington DC, 2016.5. Boedeker, P.e.a. STEM Summer Camp Follow Up Study: Effects on Students’ SAT Scores and Postsecondary Matriculation. Frontiers in Educ. Conf. 2015. El Paso, TX.6. Constan, Z.S.J.J., Maximizing Future potential in Physics and STEM: Evaluating a Summer Program Through a Partnership Between Science Outreach and Education Research. Journal of Higher Education Outreach and Engagement 2015. 19(2

Conference Session

Instrumentation Division Technical Session 1

Collection

2018 ASEE Annual Conference & Exposition

Authors

Masoud Fathizadeh P.E., Purdue University Northwest; Anan Ismail Ayyad

Tagged Divisions

Instrumentation

Paper ID #21597Students’ Participation to Improve Formula SAE CarDr. Masoud Fathizadeh P.E., Purdue University Northwest Masoud Fathizadeh – PhD, PE Professor Fathizadeh has been with the Department of Electrical and Computer Engineering Technology Purdue University Northwest since 2001. He has worked over 15 years both for private industries and national research laboratories such as NASA, Argonne and Fermi National Laboratories. Dr. Fathizadeh has established his own consulting and engineering company in 1995 specializing in power system, energy management and automation systems. During last twenty years the company

Conference Session

Experimentation and Laboratory-Oriented Studies Division Technical Session 2

Collection

2019 ASEE Annual Conference & Exposition

Authors

Sevile Mannickarottu, University of Pennsylvania

Tagged Divisions

Experimentation and Laboratory-Oriented Studies

), molecular biology equipment, and two chemical fume hoods Figure 3: Other side of the lab’s “Projects Room”. This side houses 3D printers, a cell culture hood, a CO2 incubator, and microscopes Moreover, as with many engineering programs, the department wanted to have more hands-on laboratory classes. Existing lab classes also needed to cover a broader range ofBioengineering topics. This was to help students see how the disparate topics for which theywould have taken classes, come together in its application to biology and the human system. Thebiggest challenge, however, was that the department also wanted to move the senior design classout of the research labs where it was tied to faculty

Conference Session

Energy Conversion and Conservation Division Technical Session 1

Collection

2019 ASEE Annual Conference & Exposition

Authors

Matthew R. Aldeman, Illinois State University

Tagged Divisions

Energy Conversion and Conservation

assessment of thedurability and reliability of the machine. Students have given very positive feedback on theproject, saying that it was their favorite part of the course, and have commented that the projectgreatly improved their understanding of electromagnetic principles and electric machine design.The students’ exam scores on related material also show marked signs of improvement.Introduction and Background A Bachelor of Science in Renewable Energy (RE) degree program was established byIllinois State University in 2007, and is housed within the Department of Technology. Thedegree was initially offered in two specialization sequences: i. Technical, and ii.Economics/Public Policy. The two sequences were combined in 2013, and students are

Conference Session

Experimentation and Laboratory-Oriented Studies Division Technical Session 5

Collection

2019 ASEE Annual Conference & Exposition

Authors

Ilan Gravé, Elizabethtown College

Tagged Divisions

Experimentation and Laboratory-Oriented Studies

Paper ID #26094Improving Technical Writing Skills Through Lab ReportsDr. Ilan Grav´e, Elizabethtown College Ilan Grav´e received B.Sc. in Physics and Electrical Engineering and M.Sc. in Physics from Tel-Aviv University in Israel, and a PhD in Applied Physics from Caltech, in Pasadena, California (1993). In the past he has lead high-tech R&D avionics projects at the Israeli Aircraft Industries; has been a se- nior researcher and adviser at the Fondazione Ugo Bordoni, in the Ministry of Post and Communications in Rome, Italy; and has been on the faculty of the Department of Electrical Engineering at the Univer- sity of