Conference Session

Design Mental Frameworks

Collection

2020 ASEE Virtual Annual Conference Content Access

Authors

Corey T. Schimpf, Concord Consortium; Molly H. Goldstein, University of Illinois at Urbana-Champaign; Charles Xie

Tagged Divisions

Design in Engineering Education

Paper ID #28754Reflection in Time: Using Data Visualization to Identify StudentReflection Modes in DesignDr. Corey T Schimpf, The Concord Consortium Corey Schimpf is a Learning Analytics Scientist at the Concord Consortium with interest in design re- search and learning, learning analytics, research methods and underrepresentation in engineering. A ma- jor strand of his work focuses on developing and analyzing learning analytics that model students’ design practices or strategies through fine-grained computer-logged data from open-ended technology-centered science and engineering projects. A closely related strand focuses

Conference Session

Engineering Physics and Physics Division Technical Session 3

Collection

2020 ASEE Virtual Annual Conference Content Access

Authors

Genaro Zavala, Tecnologico de Monterrey and Universidad Andres Bello; Angeles Dominguez, Tecnologico de Monterrey and Universidad Andres Bello

Tagged Topics

Diversity

Tagged Divisions

Engineering Physics and Physics

, students’ perception, educationalinnovation, higher educationIntroductionTo understand gender and socioeconomic differences in scientific and technological areas,studies that deepen the understanding of each culture or region are necessary. This papercontributes to the understanding of high-school students’ perceptions about physics by genderand different socioeconomic statuses in Mexico.This study was conducted in Mexico within a larger project in which the objective was toidentify the actors and factors that influence ninth-grade students’ perceptions of their academicor future professional work activities in the STEM areas of science and technology. We focusedour study on students in Nuevo Leon in the northern part of the country and Chiapas in

Conference Session

Alternative Methods of Teaching and Learning Mechanics

Collection

2020 ASEE Virtual Annual Conference Content Access

Authors

Eleazar Marquez, Rice University; Samuel Garcia Jr., Texas State University

Tagged Divisions

Mechanics

correlating the course and lab material, and reduced the time tocomplete the reports.I. BACKGROUND AND MOTIVATIONBackgroundCurrently, there are numerous teaching and pedagogical methods that target student engagement,comprehension, and scholarship abilities in engineering education. One of the most prominent isknown as Project-based learning (PBL). PBL focuses on the application of knowledge rather thanthe acquisition of knowledge and its primary objective involves enhancing student comprehensionby incorporating project-based instruction [13], [19], [20]. An alternative instructional methodincorporated in engineering education is the implementation of visual cueing, which according toresearchers, is verified to increase retention rates in less time

Conference Session

New Engineering Educators 1: Learning Aids

Collection

2020 ASEE Virtual Annual Conference Content Access

Authors

Mariana Silva, University of Illinois at Urbana-Champaign; Eric G. Shaffer, University of Illinois at Urbana-Champaign; Nicolas Nytko, University of Illinois at Urbana-Champaign; Jennifer R. Amos, University of Illinois at Urbana-Champaign

Tagged Divisions

New Engineering Educators

Paper ID #29449A case study of early performance prediction and intervention in acomputer science courseProf. Mariana Silva, University of Illinois at Urbana-Champaign Mariana Silva is a Teaching Assistant Professor in Computer Science at the University of Illinois at Urbana-Champaign. She has been involved in large-scale teaching innovation activities, such as the de- velopment of online course content and assessments for the mechanics course sequence in the Mechanical Science and Engineering Department and the numerical methods class in Computer Science. Silva is cur- rently involved in two educational projects

Conference Session

Emerging Trends in Engineering Education Poster Session

Collection

2007 Annual Conference & Exposition

Authors

E. Bernard White, George Mason University

Fernandez9, factors that must be taken into considerationwhen initiating curriculum redesign and development that meet today’s needs include, but arenot limited to the following: • Level of technical skills required in the major as well as in the profession • Other specific technical skills needed • Non-technical skills needed • Amount of previous work experience required.For an appropriately prepared computing professional, the list of technical skills may includeprogramming languages, operating system and networking management, database developmentsand management, software engineering and project development. Other technical skills mayinclude Web-based technologies, hardware installation, etc. The non-technical

Conference Session

New Approaches to the Development of Online Learning and International Programs

Collection

2007 Annual Conference & Exposition

Authors

David Batts, East Carolina University; Richard Monroe, East Carolina University; Leslie Pagliari, East Carolina University; Sherion Jackson, East Carolina University; Cheryl McFadden, East Carolina University

Tagged Divisions

Continuing Professional Development

of training or revisions to currenttraining to make the training more palatable.It is suggested that research projects be continued in order to gather more information concerningtraining faculty members to teach online. Data collected, such as current available training atinstitutions, student satisfaction, and student evaluation could prove to be important in promotingstudent success by training faculty to be successful online instructors.References1. Allen, E, & Seaman, J (2006). Making the grade online education in the United States, 2006.Needham: Sloan-C.2 Bower, B. (2001).Distance Education: Facing the Faculty Challenge. Online Journal of Distance Learning Administration. 4, 1-6.3 Braxton, J. M., Olsen, D

Conference Session

Global Engineering in an Interconnected World

Collection

2008 Annual Conference & Exposition

Authors

Byoung-Kyu Dan, Korea University; Seung-Won Jung, Korea University; Junh-Yung Kim, Korea University; Tae-Shick Wang, Korea University; Aldo Morales, Pennsylvania State University-Harrisburg; Sung-Jea Ko, Korea University

Tagged Divisions

International

exchange of research information by various means such as offering seminars for researchers at each other’s institutions whenever possible, • To seek joint research projects within the policies and guidelines of both institutions. • To encourage students to apply for graduate studies at each other’s institutions.” Page 13.1037.2Based on these principles, there were exchange visits between the School of Science,Engineering and Technology Director, Penn State University Harrisburg and the Headof the School of Electronics and Computer Engineering, Korea University to formalizeand to put into practice some of the aspects of the July 2005

Conference Session

STEM Pipeline: Pre-College to Post-Baccalaureate

Collection

2008 Annual Conference & Exposition

Authors

Julie Trenor, University of Houston; Olga Pierrakos, James Madison University

Tagged Divisions

Educational Research and Methods

-methods approach incorporating survey instruments,interviews, and weekly self-reflective journal entries was utilized. Triangulation of data from themixed-methods approach revealed emergent themes and insights that otherwise would have goneun-captured using quantitative data alone. A more detailed description of the potential benefits ofsuch an approach can be found elsewhere11.Participants completed online pre- and post-program survey instruments, which were conductedas part of a larger National Academy of Engineering Center for the Advancement of Scholarshipon Engineering Education (CASEE) Postdoctoral Fellowship project conducted at Virginia Tech.The University of Houston site was one of 22 NSF-funded summer REU sites to participate inthe

Conference Session

Engineering Education in the Mid-East / Asia

Collection

2008 Annual Conference & Exposition

Authors

Paul Stanton, United States Military Academy

Tagged Divisions

International

) Programming Systems History Training (CS 409) IIIA (CS 423) (CS 453) (CS 455) Data Structures Software Network Project Branch Military Branch 8 & Algorithms Engineering Security (CS 499) Training IIIB History Training IV

Conference Session

Inter- and Multidisciplinary Laboratories

Collection

2008 Annual Conference & Exposition

Authors

Susan Sharfstein, Rensselaer Polytechnic Institute; Blanca Barquera, Rensselaer Polytechnic Institute; Michael Hanna, Rensselaer Polytechnic Institute

Tagged Divisions

Division Experimentation & Lab-Oriented Studies

of equipment purchased included a BioRadgel documentation system, a table-top refrigerated centrifuge, four New Brunswick ScientificBioFlow 110 fermentors, a refrigerator/freezer, two incubators, shaking heating blocks, verticaland horizontal gel electrophoresis equipment, and microcentrifuges. In addition, a number oflarge shakers were previously available in the laboratory, and these were placed into theenvironmental rooms, eliminating the need for shaking incubators.Equipment purchased by Chemical and Biological Engineering DepartmentDue to the large amount of equipment that was already available in the microbiology laboratoryand the microplate reader costing substantially less than was projected, we were able to purchasemajority of the

Conference Session

ChE Poster Session

Collection

2008 Annual Conference & Exposition

Authors

William Krantz, National University of Singapore

Tagged Divisions

Chemical Engineering

presentation.Remember that the principal part of your presentation is usually your results; hence, it is veryimportant to allow ample time to discuss them. Look at the time throughout your presentation tomake certain that you are on schedule. Never run over your time limit even if keeping on timerequires that you delete material from your presentation.5c. VocalizationIt is very important to speak loudly. This is easier for men with stronger voices than for women.For this reason women need to work on projecting their voice. Use a microphone if it isavailable. Avoid talking directly into and then away from the microphone; this can cause veryannoying variations in the loudness of your voice. Do not speak in a monotone voice; use voiceinflections occasionally

Conference Session

Computer Education Management Tools I

Collection

2008 Annual Conference & Exposition

Authors

Chi Thai, University of Georgia

Tagged Divisions

Computers in Education

dualgraphics displays allowing the student to use one display for his or her personal workspace,while the second display could be used to view/share information with the instructor’s desktop,or to share into other students work during collaborative sessions. This project was started inmid-August 2007 and assessment results are presented in this article for Fall 07 and the early partof Spring 08.IntroductionOne of the thrusts for our Biological and Agricultural Engineering Department curriculum is topromote the active learning aspects for our engineering students during classroom lectures aswell as during laboratory experiments needed for the course1. Based on student technology fees,departmental and collegial funds, two collaborative classrooms were

Conference Session

Learning to Communicate with Engineers and Non-Engineers

Collection

2008 Annual Conference & Exposition

Authors

Mieke Schuurman, Pennsylvania State University; Michael Alley, Pennsylvania State University; Melissa Marshall, Pennsylvania State University; Christopher Johnstone, Pennsylvania State University

Tagged Divisions

Liberal Education

Public Speaking Self-Efficacy of Engineering UndergraduatesAbstract This paper reports on how tailoring a speech communication course at The PennsylvaniaState University specifically for engineering undergraduates affected the public speaking self-efficacy of those students—a project partially funded by the Engineering InformationFoundation. This paper focuses on the following research question: Did engineering studentswho completed an engineering section feel more confident in their ability to communicateeffectively than engineering students who completed a regular section? Overall, students in the engineering sections increased their public speaking self-efficacyslightly more than students in the regular sections; this

Conference Session

The Best of Design in Engineering Education

Collection

2008 Annual Conference & Exposition

Authors

Steven Zemke, Gonzaga University; Diane Zemke, Gonzaga University

Tagged Divisions

Design in Engineering Education

monitoringgroup processes, whereas TBL depends on difficult tasks to stimulate group processes.Applying TBL to the Design ClassTBL was applied in the following way to the class in this study: 1. Learning phases were one week long to fit chapter length in the design text, Engineering Design by Eggert.8 2. In-class quizzes and exercises followed the TBL model. 3. A team design project spanning several weeks was the homework. Weekly assignments on the project were required. 4. Grading of the weekly assignments and a midterm formed the assessment.The class met in two-hour blocks, twice weekly for 15 weeks. The class of 24 students, 21 menand 3 women, was pseudo-randomly divided into six teams of four by the instructor. Althoughteams were

Conference Session

Recruitment and Retention Topics

Collection

2007 Annual Conference & Exposition

Authors

Susan Lord, University of San Diego; Michelle Camacho, University of San Diego

Tagged Divisions

Women in Engineering

feminist pedagogy. The ideal suggeststhat the professor is a partner among students, not one assuming an omniscient authority Page 12.1611.5position. Having an open stance to questioning and critique, however, is difficult to achieve; 4nearly all feminists interviewed for this project acknowledged the challenges embedded inattempting to achieve, on the one hand, a balance between earning the respect of students inorder to guide them and, on the other, negotiating an egalitarian role among students.From this qualitative data (based on the feminist pedagogy participants interviews and theliterature), a

Conference Session

Preparing Civil Engineering Students for a Flat World

Collection

2007 Annual Conference & Exposition

Authors

James Ledlie Klosky; Stephen Ressler, U.S. Military Academy

Tagged Divisions

Civil Engineering

had little or no experience with either prior to the beginning of this project. Some limitedsemester-abroad programs had been undertaken previously on an individual basis, but noengineering students were included in any of these efforts. Further, while distance learning iswell known to the Army at large, with large-scale projects like Army Knowledge On-Line beingfairly common, USMA had not previously offered any courses to students not present oncampus. In that sense, to the best of the authors’ knowledge, the offering of CE364, Mechanicsof Materials, was unique. This is strange, especially given the Army’s tradition of embracingdistance learning, but doubly so when one considers that the entire engineering portion of thestudent’s training is

Conference Session

Assessment of K-12 Engineering Programs and Issues

Collection

2007 Annual Conference & Exposition

Authors

Kelly Hutchinson, Purdue University; Shawn Stevens, University of Michigan; Namsoo Shin Hong, University of Michigan; Molly Yunker, University of Michigan; Cesar Delgado, University of Michigan; George Bodner, Purdue University; William Fornes, Purdue University; Nick Giordano, Purdue University; Joseph Krajcik, University of Michigan

Tagged Divisions

K-12 & Pre-College Engineering

science and engineering and nanotechnology are emerging fields that containconcepts and phenomena that are not usually addressed in traditional science curricula, but inwhich students might be interested. Research efforts in the area of Nanoscale Science andEngineering Education (NSEE) teaching and learning have therefore recently been undertaken ina multi-institutional, collaborative project. This study investigated 7-12th grade students’ interestin various nanoscale science and engineering concepts and phenomena. In particular, weinvestigated whether we can identify activities based on nanoscale phenomena that will motivatediverse learners to explore and learn nanoscale science and engineering topics. We also reporton students’ suggestions for

Conference Session

Computer ET Curriculum

Collection

2006 Annual Conference & Exposition

Authors

C. Richard Helps, Brigham Young University; Craig Malquist, Brigham Young University

Tagged Divisions

Engineering Technology

that of “Smart Dust”. The SmartDust Project was run by Pister, Kahn and others at Berkeley and had a goal of creating acomputerized ‘mote’ about 1 mm3 with independent power supply and the capability to collectdata and communicate it to other motes13, 15. Micro-Electro-Mechanical Systems (MEMS)techniques are used to incorporate sensors and computational capability on the same chip. TheSmart Dust Project produced a number of interesting concepts and derivative projects but did notof itself become a standard. The terminology ‘smart dust’ is now sometimes used in a genericsense to refer to very small computerized motes.Many applications are being proposed to use mesh networking and sensor mesh networks.Firefighting applications have already been

Conference Session

Best Zone Paper Competition

Collection

2006 Annual Conference & Exposition

Authors

Nathan Klingbeil, Wright State University; Richard Mercer, Wright State University; Kuldip Rattan, Wright State University; Michael Raymer, Wright State University; David Reynolds, Wright State University

Tagged Divisions

Council of Sections

2006-1631: REDEFINING ENGINEERING MATHEMATICS EDUCATION ATWRIGHT STATE UNIVERSITYNathan Klingbeil, Wright State University NATHAN W. KLINGBEIL is an Associate Professor in the Department of Mechanical & Materials Engineering at Wright State University, and holds the title of Robert J. Kegerreis Distinguished Professor of Teaching. He received his Ph.D. in Mechanical Engineering from Carnegie Mellon University in 1998. Professor Klingbeil leads NSF supported research projects in the areas of manufacturing science and engineering curriculum reform. He is the recipient of numerous awards for his work in engineering education, including the CASE Ohio Professor of the Year Award (2005), the

Conference Session

FPD6 -- Early Intervention & Retention Programs

Collection

2006 Annual Conference & Exposition

Authors

Carrie Slater, Virginia Tech; Whitney Edmister, Virginia Tech; Bevlee Watford, Virginia Tech; Jean Kampe, Virginia Tech

Tagged Divisions

First-Year Programs

programs, validated pre- andpost-assessment instruments were used. These were produced by the Assessing Women inEngineering (AWE) Project developed by the Pennsylvania State University and University ofMissouri funded by The National Science Foundation (HRD 0120642). To view the surveyinstruments, visit the AWE web site at www.aweonline.org and register as a user. Onceregistered, the user may login to view all of the instruments available for use in assessingundergraduate engineering mentoring programs.After the CEED office secured approval through the Virginia Tech Institutional Review Board,the AWE Undergraduate Engineering Mentee and Mentor Pre-Participation Surveys were sent toall participants who were 18-years of age and older by the date of

Conference Session

ChE: Computers and Simulation in the Classroom

Collection

2007 Annual Conference & Exposition

Authors

Jason Keith, Michigan Technological University; Faith Morrison, Michigan Technological University; Julia King, Michigan Technological University

Tagged Divisions

Chemical Engineering

hasused EXCEL spreadsheets to study two-dimensional heat conduction in solid materials.Zheng and Keith9-10 have developed JAVA applets for unsteady and steady state transportproblems.As such, we present a handful of problems developed with the Comsol Multiphysics(formerly known as FEMLAB) finite element method modeling software1. We also usethe “Chemical Engineering Module” which allows for quick access to the typicalgoverning equations of momentum, heat, and mass transport. Additional modules are alsoavailable.As the authors are working on a National Science Foundation project to develop newmaterials for fuel cell bipolar plates, many of the modules developed here focus solving avariety of fluid mechanics, heat transfer, and mass transfer

Conference Session

First Year Engineering

Collection

2013 ASEE Annual Conference & Exposition

Authors

Irene B Mena, Pennsylvania State University, University Park; Sarah E Zappe, Pennsylvania State University, University Park; Thomas A. Litzinger, Pennsylvania State University, University Park

Tagged Divisions

Educational Research and Methods

probably a really good experience.” 2. Joining extracurricular activities. One participant described it as follows: “And then completely not engineering related, there’s a dance club that I’m doing which is nice to keep up with. So I’m not just focusing everything on engineering but be able to balance it out…I keep all my interests in mind.” 3. Having good and enjoyable classes. For example: “I just love that [engineering design] class. My teacher has been great. I’ve learned a lot, really…I really like the fact that we’re working on real projects, not just some made up. But it’s a real company that’s come in and asked us to design this new process for them, so I think that’s really cool.” 4. Meeting

Conference Session

Innovative IE Course Content

Collection

2013 ASEE Annual Conference & Exposition

Authors

Julie Ann Layton, Rensselaer Polytechnic Institute; Thomas Reed Willemain, Rensselaer Polytechnic Institute

Tagged Divisions

Engineering Economy, Engineering Management, Industrial Engineering

, and do not collaborate. Step 5. Save your Minitab file as a project file (not a worksheet!) with your name on it, e.g., TomWillemain.MPJ. Step 6. Save your answers as a Word file with your name on it, e.g., TomWillemain.doc. Step 7. Email both your MPJ project file and Word file to willet@rpi.edu. Step 8. Turn this paper with the signed consent form back to Prof. Willemain. Thank you for your participation in this research project. We hope your data will help evolve our courses to better educate engineers in the art of data analysis. Page 23.572.14B. Prompt for Web Visitors exercise

Conference Session

Robots and K-12 Computer Applications

Collection

2013 ASEE Annual Conference & Exposition

Authors

Jeffrey Laut, Polytechnic Institute of New York University; Vikram Kapila, Polytechnic Institute of New York University; Magued G. Iskander P.E., Polytechnic Institute of New York University

Tagged Divisions

Computers in Education

and robotics.Dr. Vikram Kapila, Polytechnic Institute of New York University Dr. Vikram Kapila is a professor of Mechanical Engineering at NYU-Poly, where he directs an NSF- funded Web-Enabled Mechatronics and Process Control Remote Laboratory, an NSF-funded Research Experience for Teachers Site in Mechatronics, and an NSF funded GK-12 Fellows project. He has held visiting positions with the Air Force Research Laboratories in Dayton, OH. His research interests are in K-12 STEM education, mechatronics, robotics, and linear/nonlinear control for diverse engineering ap- plications. Under Research Experience for Teachers Site and GK-12 Fellows programs, funded by NSF, and the Central Brooklyn STEM Initiative (CBSI

Conference Session

Training and Mentoring of Graduate Teaching Assistants

Collection

2013 ASEE Annual Conference & Exposition

Authors

Rachel Louis Kajfez, Virginia Tech; Holly M Matusovich, Virginia Tech

Tagged Divisions

Graduate Studies

course) and do not examine the longer-termimpacts such as GTAs confidence and ability beliefs with regard to actually using such training.This study begins closing this gap by examining GTAs views on their own teaching practice orpedagogy competence.Scope of This WorkThis work is part of a larger study aimed at understanding the motivation and identitydevelopment of GTAs involved in FYEPs. The larger research study is a multi-phased mixedmethods research project that has employed reoccurring journal entry surveys over an academicterm, semi-structured interviews, and a nationwide survey. This portion of the project focuses ona subset of the interviews from the larger work and concentrates on the topic of teaching practiceor pedagogy competence

Conference Session

Choice and Persistence in Engineering Education and Careers

Collection

2014 ASEE Annual Conference & Exposition

Authors

Joanna Wolfe, Carnegie Mellon University; Beth A. Powell, Tennessee Tech University

Tagged Divisions

Educational Research and Methods

not beconfused with an instructor who accidentally creates an exam that is too hard.We became interested in left-of-center grading through an unrelated project on gender andcommunication in engineering. During the course of our interviews, we frequently heardcomplaints about tests with medians as low as 20. Curious, we began systematically asking ourinterview subjects about the pros and cons of this grading practice.Since adding this question to our protocol, we have interviewed a total of 83 engineeringundergraduates, professional engineers and faculty. Our study adds to research examiningcompetitive grading practices in engineering in that we focus our insight on a very specificgrading practice (e.g., left-of-center grading) and we include

Conference Session

Curriculum Development and Assessment in Chemical Engineering

Collection

2014 ASEE Annual Conference & Exposition

Authors

Vincent Wilczynski, Yale University; Isabella M. Quagliato, Yale University: School of Engineering & Applied Science

Tagged Divisions

Chemical Engineering

. Wilczynski was named the 2001 Baccalaureate College Professor of the Year by the Carnegie Foundation, the only national award which recognizes outstanding college teaching.Ms. Isabella M Quagliato, Yale University: School of Engineering & Applied Science Isabella Quagliato joined Yale University in January 2013 as the Program Manager Analyst for the Yale School of Engineering and Applied Science (SEAS). After obtaining her B.S. with high honors in Civil Engineering & Structural Design from Worcester Polytechnic Institute, she worked for two years as a structural engineering designer at Dewberry Good-kind, then worked for three years as a structural de- signer and project manager at Spiegel Zamecnik & Shah

Conference Session

Assessment of Student Learning 2

Collection

2013 ASEE Annual Conference & Exposition

Authors

Sabah Razouk Abro, Lawrence Technological University; Jerry Cuper, Lawrence Technological University

Tagged Divisions

Educational Research and Methods

. It does, however, give indications about a set of information that cannot beconsidered a model of assessment.The model that we have designed and used for three semesters has two methods of assessingcourse learning objectives: direct and indirect.The direct assessment is conducted by the instructor where he or she will set up the level ofachievement that is designed for each objective. Then the instructor will get feedback on thelevel of achievement based on the tests, assignments and projects results meant to assess thelevel of achievement of the particular objective. This process will be an ongoing processthroughout the semester where the final actual level of achievements will be compared with thedesired level set by the instructor at the

Conference Session

Design Methodology and Evaluation 2

Collection

2013 ASEE Annual Conference & Exposition

Authors

Alan Chong, University of Toronto; Jason A. Foster, University of Toronto; Patricia Kristine Sheridan, University of Toronto; Robert Irish, University of Toronto

Tagged Divisions

Design in Engineering Education

lack. Further, Page 23.365.4they may imply a certain ideology of engineering design, or may be intended for specificpurposes, such as defining accreditation requirements, and may not be the most useful to studentstrying to understand the complicated range of activities encompassed by engineering design. Thedefinitions also tend to imply a rational, idealized, vision of engineering design practice, distinctfrom that which is actually used by practicing engineering designers.In this project, we explore and experiment with how freshman engineering students in the firstyear design sequence in the Engineering Science program at the University of

Conference Session

Integrating Engineering & Liberal Education

Collection

2013 ASEE Annual Conference & Exposition

Authors

Pradeep Kashinath Waychal, College of Engineering Pune; Anil Dattatraya Sahasrabudhe, College of Engineering, Pune

Tagged Divisions

Liberal Education/Engineering & Society

consulting and verification and validation. He has headed the corporate product and technology innovations and quality and delivery innovation departments. He has designed and delivered workshops in the areas of problem solving, project management and innovation management that were received very well by the participants. Pradeep was on the apex senior management group before proceeding on to pursue his academic, research and social interests. Before Patni, he has worked at IIT Delhi, IIT Bombay, SGGS College of Engineering and Crompton Greaves R & D Electronics in different research and academic positions. Pradeep Waychal has also published papers in peer reviewed journals, presented keynote invited talks in many