Conference Session

Statics and Dynamics in Mechanical Engineering

Collection

2016 ASEE Annual Conference & Exposition

Authors

Alan Bowling, University of Texas, Arlington; Ashley Guy; Frasier Jones, University of Texas, Arlington; Maria Adamuti-Trache, University of Texas, Arlington

Tagged Divisions

Mechanical Engineering

, Valentin Raz- mov, and Beth Simon. Classroom presenter: a classroom interaction system for active and collaborative learning, 2006. [3] Howard S Barrows. Problem-based learning: An approach to medical education. Springer Publishing Company, 1980. [4] Lemuel Berry Jr. Collaborative learning: A program for improving the retention of minority students., 1991. [5] Alan P. Bowling. Vector Mechanics: A Systematic Approach. Aqualan Press, LLC, first edition, 2015. [6] Kenneth A Bruffee. Sharing our toys: Cooperative learning versus collaborative learning. Change: The Magazine of Higher Learning, 27(1):12–18, 1995. [7] Pierre Dillenbourg et al. Collaborative-learning: Cognitive and computational approaches. Technical report

Collection

2024 ASEE PSW Conference

Authors

Jill Davishahl, Western Washington University; John Misasi PhD, Western Washington University

Tagged Topics

Diversity

opportunities to pre-major students. These efforts werespurred by an internal research study that found the following: 1. The percent of women-identifying, first-generation, Pell-eligible, and underserved students declines from pre-major to the major more significantly than their counterparts. 2. There has been a significant decrease in diversity as the programs have become more competitive. 3. Pre-majors, women-identifying, and underserved students report a statistically significant lower sense of belonging than their counterparts [17].Unfortunately, it has recently come to light that students’ experiences in the Engineering &Design department include feelings of exclusion, dismissal, and unease. There is a culture thatdoesn’t

Collection

2008 GSW

Authors

George D. Gray

Session 10-3 The Integration of Hands-On Manufacturing Processes and Applications within Engineering Disciplines George D. Gray Engineering Technology Department Texas Tech University AbstractCurrent engineering graduates are highly knowledgeable within their specific academicdisciplines regarding the application of finite element analysis and parametric solidmodeling software in pursuit of prototyping and simulating theoretical product designs.However, it would appear that many engineering students are not

Conference Session

Design in BME

Collection

2017 ASEE Annual Conference & Exposition

Authors

Joe Tranquillo, Bucknell University; Annmarie Mullen, Bucknell University

Tagged Divisions

Biomedical

technologies. International Journal of Machine Tools and Manufacture, 38(10), 1257-1287. 3. Kruth, J., Leu, M., & Nakagawa, T. (1998). Progress in additive manufacturing and rapid prototyping. CIRP Annals-Manufacturing Technology, 47(2), 525-540. 4. Kothawade, V. E., & Kakade, S. P. (2015). An Overview of Rapid Prototyping Methods. International Journal of Engineering Sciences & Technology, 2(4), 1-4. 5. Petzold, R., Zeilhofer, H., & Kalender, W. (1999). Rapid prototyping technology in medicine—basics and applications. Computerized Medical Imaging and Graphics, 23(5), 277-284. 6. Ashley, S. (1995). Rapid prototyping is coming of age. Mechanical Engineering, 117(7), 62. 7. Bryden, D. (2014). CAD and

Conference Session

Grad. and Upper Level Undergrad. BME Courses

Collection

2002 Annual Conference

Authors

Gordon Silverman

Session 1309 Biomedical Engineering Redux: Emerging Career Opportunities and Their Implications for Educational Programs Gordon Silverman, Professor and Chair Electrical and Computer Engineering, Manhattan College, Riverdale, New York, U.S.A.I. Background.Biomedical engineering combines engineering expertise with the needs of the medicalcommunity for the enhancement of health care. (1) (2) Working cooperatively with scientists,chemists, and medical professionals, biomedical engineers design and develop devices associatedwith the biological systems of

Conference Session

Capitalizing on COVID: Using This Disruptor to Change the Educational Model

Collection

2021 ASEE Virtual Annual Conference Content Access

Authors

John Tingerthal P.E., Northern Arizona University; Kaikea Kaoni, Northern Arizona University

Tagged Divisions

Civil Engineering

for a consulting firm in Prescott, Arizona specializing in sub-division and commercial site development. Following his graduate studies in 2011, he decided to transition into a construction management role with a Flagstaff, Arizona based general contractor. With a focus in higher education construction, Kai helped deliver several campus projects around northern Arizona as project engineer, estimator and project manager. Most recently, he acted as the CMAR project manager on NAU’s first Net Zero Energy building, the NAU International Pavilion. American c Society for Engineering Education, 2021 Implementing a Virtual

Conference Session

Capstone/Design Projects: Information/Computer ET

Collection

2005 Annual Conference

Authors

Samuel Colwell; Richard Warren; Rich Warren

Session 2147 Increasing Student Interest Through Hardware Ownership Samuel Colwell and Rich Warren Vermont Technical College, Randolph Center, VermontAbstractWith the significant drop in cost of embedded microcontrollers,1, 3 there now exists anopportunity to give every student a trainer that they can take home to work on and can keep at theend of the semester. At Vermont Technical College, one of the courses has been modified toinclude a Microchip PIC16F877 based trainer board. The trainer board comes in kit form (a PCBand components) and the students assemble the board and then use it in

Conference Session

New ET Programs

Collection

2002 Annual Conference

Authors

Richard Newman; John Robertson; Lakshmi Munukutla

, October 1997. http://www.sciam.com/specialissues/1097solidstate/1097hutch.html#authors 2. The International Technology Roadmap for Semiconductors (ITRS) is fully described in an extensive web site at http://public.itrs.net. 3. L Munukutla, J Robertson & A McHenry, “A Contextual experience model to prepare a high-tech workforce”, International Conference on Engineering Education (ICEE), Oslo, Norway, 6-10 August 2001, 7D6/14-17 4. Details of the Maricopa Advanced Technology Education Center (MATEC) can be found at: http://www.matec.org 5. Y Nishi and R Doering, “Handbook of Semiconductor Manufacturing Technology”, Marcel Dekker Inc, NY, 2000

Conference Session

Curricular Change Issues

Collection

2004 Annual Conference

Authors

Linda Katehi; Leah Jamieson; Katherine Banks; Kamyar Haghighi; John Gaunt; Heidi Diefes-Dux; Robert Montgomery; William Oakes; P.K. Imbrie; Deborah Follman; Phillip Wankat

the Past and Present of General Engineering and Engineering Science Programs,” Journal of Engineering Education, 92(3), 217-226 (2003).8. Katehi, L., Banks, K., Diefes-Dux, H., Follman, D., Gaunt, J., Haghighi, K., Imbrie, P. K., Jamieson, L., Montgomery, R., Oakes, W., and Wankat, P., Development of Graduate Programs in Engineering Education, 2004 ASEE National Conference Proceedings, Salt Lake City, UT. (2004).Biographical InformationLINDA P.B. KATEHILinda P.B. Katehi is the John A. Edwardson Dean of Engineering and Professor of Electrical and ComputerEngineering at Purdue University. She earned a BSEE degree from the Technical University of Athens, Greece andMSEE and PhD degrees from the University of California. She is an expert in

Collection

2000 Annual Conference

Authors

Mike Papadakis

the design and placement of the rear gasfiller cap, filler tube, and fuel tank connections. Such a design was defective because ofwhat would be expected to occur in low speed rear impacts. Page 5.675.4 The test of defectiveness has expanded over the last thirty years, and it is a little moredifficult for a trial lawyer to call a product defective and make the allegation stick. Todaymost trial lawyers analyze a product design from the following viewpoint.1. At the time of the defective design, was an alternative design technically feasible?2. If an alternative design was technically feasible, would it have been economically viable?3. If such an

Collection

2008 ASEE Midwest Section Conference

Authors

Chih-Hao Wu; Kim Troboy; Tracy Cole; Loretta Cochran; David Roach

and environmental responsibility, and lifelong learning. 2. Team Players - communicating, planning, coordinating, and managing projects and personnel with efficiency and effectiveness. 3. Problem solvers - learning new concepts, techniques, skills, and tools to aid in analyzing and designing electrical engineering systems. 4. Professionals - trained and competent in the fundamentals of engineering science, applied mathematics, laboratory practice, and principles of electrical engineering.”6 The ATU Engineering courses that specifically address ethics in their technical objectivesare ELEG/MCEG 1012 – Introduction to Engineering, MCEG 2023 – Engineering Materials,MCEG

Conference Session

Design Methodology

Collection

2009 Annual Conference & Exposition

Authors

Marjan Eggermont, University of Calgary; Carla Gould, Ontario College of Art and Design; Casey Wong, Ontario College of Art and Design; Michael Helms, Georgia Institute of Technology; Djordje Zegarac, University of Calgary; Sean Gibbons, University of Montana; Carl Hastrich, Ontario College of Art and Design; Jeannette Yen, Georgia Institute of Technology; Bruce Hinds, Ontario College of Art and Design; Denise DeLuca, Biomimicry Institute; jessica ching, Ontario College of Art and Design

Tagged Divisions

Design in Engineering Education

gain deeperinsight into some of the observations made in earlier studies. Here we summarize our keyobservations from the CBID location.Study MethodObservations took place in three contexts: 1) local collaborative design of CBID designers, 2)remote collaborative design calls, and 3) observation of documents distributed throughbasecamp, described in the next section. Both Helms and Yen participated in all three contextsand were present for all of the local design sessions and more than 90% of the remotecollaborative design calls. Yen actively participated as a designer and as the primary biologist.Helms participated as an observer and to facilitate certain high-level design processes.Local collaborative design for CBID took place on the Georgia

Conference Session

Non-Canonical Canons of Engineering Ethics

Collection

2015 ASEE Annual Conference & Exposition

Authors

Donna M Riley, Virginia Tech; Amy E. Slaton, Drexel University (Eng. & Eng. Tech.); Joseph R. Herkert, Arizona State University

Tagged Topics

Diversity

Tagged Divisions

Engineering Ethics, Liberal Education/Engineering & Society, Technological and Engineering Literacy/Philosophy of Engineering

even thedriest, most quantified technical specifications will nonetheless require subjective judgment inapplication, which suggests that specificity is by no means endemic to the “technicalspecification point of view” in any simple sense. 3 In addition, technical specs, like codes, implythe achievement of consensus around collective interests, interests which we have already shownin this paper to be far from universal in their positive societal effects. But this poster seems alsoto be using the idealized function of the technical protocol as a reason to step back from anyanalysis of fairness or power around sexuality. The social instrumentality of technical protocolsis in all instance nearly impossible to talk about, since the primary aim of

Conference Session

Energy Education Courses, Labs, and Projects

Collection

2012 ASEE Annual Conference & Exposition

Authors

Teodora Rutar Shuman, Seattle University; Gregory Mason P.E., Seattle University

Tagged Divisions

Energy Conversion and Conservation

electric light bulb. Design and implement an experiment Lab 3 Absolute zero x A during lab session to predict value of absolute zero. Design and implement an experiment Lab 4 Ideal Gas Law A during lab session to verify Ideal Gas Law. Then use experiment to collect data. Follow procedure and take measurements Lab 5 Refrigeration on

Collection

2022 ASEE Gulf Southwest Annual Conference

Authors

MERLYN XAVIER PULIKKATHARA, Physics Department, Prairie View A&M University; Kelvin K. Kirby, Prairie View A&M University; Richard T. Wilkins, Prairie View A&M University

Tagged Topics

Diversity

Policy Initiative (NSSPI), Texas A&M University o Research interests include: Nuclear Counter-Terrorism, Nuclear Instrumentation Development, Exercise Development, Radiological Consequence Management, Environmental Health Physics • Defense sector: Roy Elmore, Deputy Division Leader, Department of Defense o Research interests include: Nuclear Nonproliferation, International Safeguards, Nuclear Forensics, Technology, and Policy Integration • NASA: Astronaut Stephen G. Bowen, o First nuclear submarine officer to be selected as an astronaut, veteran of STS- 126,132,133, and logged more than 40 days in seven spacewalksThe students were engaged with our guest

Conference Session

Emerging Trends in Engineering Education

Collection

2004 Annual Conference

Authors

Yi Min Huang; Michael Trevisan

-funded engineering education projects are highlighted in this paper toillustrate the variety of reform-oriented projects supported by NSF as well as evaluation issuesthat challenge the success of these efforts. The projects include: (1) an engineering designcurriculum development project that specified the design expectations for the first two years ofengineering education, (2) a new master’s program in opto-electronics, and (3) an IGERT projectin environmental engineering. Evaluation issues faced by these projects are both technical andnon-technical in nature and are central to useful evaluation work. These issues are not onlypresent in NSF-funded projects but also within engineering programs more generally and thus,the NSF-funded projects

Conference Session

New ECE Laboratories

Collection

2020 ASEE Virtual Annual Conference Content Access

Authors

Liang Hong, Tennessee State University

Tagged Divisions

Electrical and Computer

the USB 2.0interface by a variety of software packages such as MATLAB/Simulink. Although initiallyconfigured to work with Windows applications, ADALM-PLUTO also supports OS X andLinux. This allows students to exploit the capabilities of the ADALM-PLUTO on a variety ofhost platforms. Additionally, custom Hardware Description Language (HDL) software may beloaded onto the Xilinx Zynq SoC device. Figure 3 shows the block diagram of the SDRdevelopment environment and an ADALM-PLUTO SDR platform.Since MATLAB is a commonly used tool taught and used since freshman in many electricalengineering curriculum, programming with ADALM-PLUTO is relatively easy. Moreover, thewell-maintained documentation and good technical support community shorten the

Collection

2018 ASEE Zone IV Conference

Authors

John M Pavlina, Embry-Riddle Aeronautical University, Prescott; Brennan Gray

engineering." Proceedings of the 30th international conference on Software engineering. ACM, 2008. (3) Roberts, Jonathan C., et al. "The Explanatory Visualization Framework: An active learning framework for teaching creative computing using explanatory visualizations." IEEE transactions on visualization and computer graphics 24.1 (2018): 791-801. (4) Princy, L., et al. "Effectiveness of Classroom Interactions in Engineering Colleges." Ergonomic Design of Products and Worksystems-21st Century Perspectives of Asia. Springer, Singapore, 2018. 163-175. (5) Arakaki, D. (2017, April), Lecture Videos to Supplement Electromagnetic Classes at Cal Poly San Luis Obispo Paper presented at 2017 Pacific Southwest Section Meeting

Conference Session

Panel Discussion: Off the Record

Collection

2012 ASEE Annual Conference & Exposition

Authors

Cheryl B. Schrader, Missouri University of Science and Technology; Janelle Brown; Lynn Lubamersky, Boise State University; Leslie Madsen-Brooks, Boise State University; Patricia Pyke, Boise State University; Heidi Reeder, Boise State University

Tagged Divisions

Women in Engineering

c American Society for Engineering Education, 2012 A Panel Discussion on Off the Record: Untold Stories of Women, Science and EngineeringAbstractWomen throughout history have made groundbreaking contributions to the advancement ofscience and technology, yet many of their stories remain unknown outside of some academiccircles. This session comprises a reading of a work-in-progress and subsequent panel discussionas part of an innovative project to bring some of these amazing stories to the stage. We willpresent dramatic readings of selected draft monologues which will be followed by a paneldiscussion spurred by questions from audience members. This will allow for a true give and takebetween the readers

Collection

2014 ASEE Zone 4 Conference

Authors

Shervin Zoghi; Eric Liguori; Manoochehr Zoghi; Fariborz Tehrani; The Nguyen

of the modern technological society.IntroductionEvidently, the globalizations of the economy, Internet connectivity, and exploding informationtechnology have had a profound impact on modern societies.1, 2 The modern society, and oureveryday lives, are increasingly dependent on scientific and technical innovation.3 Engineering,central to innovation, is dramatically influenced by the rapid changes that are taking place on aglobal scale. There has been much debate in recent years that traditional engineering education,however, does not adequately prepare the new graduates to face the ever-changing demands oftechnological societies. In a survey of engineering employers, conducted by Todd et al.4, thefollowing frequently-cited perceptions of

Conference Session

Tablet PC use in Education

Collection

2011 ASEE Annual Conference & Exposition

Authors

Leanna M. Horton, Virginia Tech; Kahyun Kim, Virginia Tech; Shreya Kothaneth, Virginia Tech; Catherine T. Amelink, Virginia Tech

Tagged Divisions

Computers in Education

Tablet PCs as well. In addition, communicating to students how technical skills andusing new technologies are important for jobs or how the Tablet PC is specifically beingemployed in careers they may want to pursue may motivate students to use new and differentfeatures associated with the Tablet PC. Finally, the college plans to increase the training andinformation sessions that are offered to students. Providing training and information sessions toincoming students and their parents might prove useful as students would enter prepared to usethe Tablet PC and parents would also be informed as to the benefits of using such technology toenhance student learning. Improving the infrastructure of the environment to support Tablet PCadoption is also

Conference Session

Studies of Shifting In-person Courses to Online and Students' Online Behavior

Collection

2021 ASEE Virtual Annual Conference Content Access

Authors

Mohammed F. Farghally, Virginia Polytechnic Institute and State University; Mostafa Kamel Osman Mohammed, Virginia Polytechnic Institute and State University; Assiut University; Hamdy F. F. Mahmoud, Virginia Polytechnic Institute and State University; Assiut University; Margaret O'Neil Ellis, Virginia Polytechnic Institute and State University; Derek A. Haqq, Virginia Polytechnic Institute and State University; Molly Rebecca Domino, Virginia Polytechnic Institute and State University; Brett D. Jones, Virginia Polytechnic Institute and State University; Clifford A. Shaffer, Virginia Polytechnic Institute and State University

Tagged Divisions

Educational Research and Methods

weeks notice before classes resumed online.Accordingly, most instructors settled for a “quick and dirty” delivery, as they did not have therequired expertise or the time to do otherwise.Three of the authors were responsible for teaching two of our CS courses in Spring 2020: aprogramming intensive CS2-course (with multiple sections and instructors), and anupper-division theory course in formal languages. Course components were updated to support afully online delivery with no F2F activities. Instructors received a training session offered by ourinstitution on how to rapidly convert a course with some F2F components to a fully online mode.All have a CS degree and with an extensive previous teaching experience.We were interested to see how

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

: Gender differences and interactive effects of students’ motivation, goals, and self-efficacy on performance,” in Proceedings of the 2016 ACM Conference on International Computing Education Research, ser. ICER ’16. New York, NY, USA: Association for Computing Machinery, 2016, p. 211–220. [Online]. Available: https://doi.org/10.1145/2960310.2960329 [2] B. C. Wilson and S. Shrock, “Contributing to success in an introductory computer science course: A study of twelve factors,” SIGCSE Bull., vol. 33, no. 1, p. 184–188, Feb. 2001. [Online]. Available: https://doi.org/10.1145/366413.364581 [3] D. Zingaro, M. Craig, L. Porter, B. A. Becker, Y. Cao, P. Conrad, D. Cukierman, A. Hellas, D. Loksa, and N. Thota, “Achievement goals

Collection

2022 ASEE Gulf Southwest Annual Conference

Authors

TOYA ACHARYA, Prairie View A & M University; Cajetan M. Akujuobi P.E., Prairie View A&M University; Mohamed F. Chouikha, Prairie View A&M University; Annamalai Annamalai, Prairie View A&M University

University. He has also an MBA in Business Administration from Hampton University. He belongs to many professional organizations such as IEEE (Life Senior Member), Chair of the IEEE Life Member Group, Houston, Texas. He is a Fellow of International Association of Advanced Materials (F.I.A.A.M.). He is ISA (Senior Member), Member of ASEE, SPIE, and Sigma XI, the Scientific Research Society. He has over 38 years’ experience in engineering education, research and development. Dr. Akujuobi has taught as a university faculty and researcher in numerous private and state universities. He was a participant and collaborative member of ANSI T1E1.4 Working Group which has the technical responsibility during the development of T1.413

Conference Session

ECE Pedagogy and Assessment

Collection

2007 Annual Conference & Exposition

Authors

J. Shawn Addington, Virginia Military Institute

Tagged Divisions

Electrical and Computer

). Page 12.1281.3 Figure 1Program Level Assessment:At the program-level, the evaluation system begins with the establishment of ProgramObjectives that support the Institute Mission and Objectives. The Program Objectives describecharacteristics that our graduates are expected to demonstrate during the first 1-3 years aftergraduating from the program. (Appendix 1)In order to evaluate the extent to which the department is meeting its Program Objectives, thedepartment relies on feedback from two sources: external advisory committees andalumni/employer surveys. First, the Engineering Division Advisory Committee (EDAC),serving multiple engineering departments at this institution, is comprised of

Conference Session

Pay It Forward: Critical Thinking, Reflection and Faculty Engagement Promote Success in Engineering

Collection

2011 ASEE Annual Conference & Exposition

Authors

Mary R Goldberg, University of Pittsburgh, Department of Rehabilitation Science and Technology; Rory A. Cooper, University of Pittsburgh; Dan Ding, University of Pittsburgh, Department of Rehabilitation Science and Technology; Alicia Koontz, Human Engineering Research Laboratories

Tagged Divisions

Cooperative & Experiential Education

disability and aging. Day 3 Technical Aspects of Disability and Aging introduces a wide range of assistive devices as well as the Participatory Action Design paradigm for designing such devices. Introduction to Research Methodology covers basic statistics and research design and process including institutional approval and ethical use of human subjects. Day 4 Technical Writing and Oral Presentations analyzes the components of a sample conference paper and provides hands-on exercises to enhance students’ skills. Ethics Forum is organized by Pitt OEL and aimed to provide an opportunity for students to Week 3 consider ethical practice in research through

Conference Session

Creative and Cross-disciplinary Methods Part II

Collection

2012 ASEE Annual Conference & Exposition

Authors

Joachim Walther, University of Georgia; Shari E. Miller, University of Georgia ; Nadia N. Kellam, University of Georgia

Tagged Divisions

Liberal Education/Engineering & Society

their understanding of their professional role as environmental engineers.Module 2: During the class session following the completion of Project 1 (as described above),students will participate in role-play activities drawn directly from their real-time experiences.Taking on the role of the observed (the stakeholder) enhances students‟ capacity for perspective-taking, including both cognitive and affective components, and could serve to enhance theircompassion, how they think about solving or addressing problems, and can further cement theirexperiential understanding of systems.Module 3: Prior to engaging in an exercise designed to illustrate team building concepts and toemploy students‟ team-based problem solving methods, students will

Collection

2001 Annual Conference

Authors

Charles Knight

, transient heat transfer, internal combustion engines,combustion and emission controls for boilers, linear vibrations, dynamics balancing of rotatingshafts, kinematics of motion for piston-cams, and spring dynamics. The design project is anincubator for developing similar modern lab systems for other programs in the College ofEngineering. Some of the new labs are operated ON-LINE using the Internet to demonstrate thefull capabilities of modern computer based experimentation. LabVIEW is used for dataacquisition, analysis, presentation, and control. The paper will describe (1) new curriculumconsiderations, (2) modern laboratory features used including running ON-LINE over theInternet, (3) scope and objectives for the new laboratory, (4) laboratory

Conference Session

Instrumentation and Control Applications

Collection

2002 Annual Conference

Authors

Charles Knight

Session 2159 Modern Engineering Laboratories That Deliver Charles Knight Mechanical Engineering University of Tennessee at ChattanoogaAbstractElectronic instrumentation and computer data acquisition has revolutionized the experimentallaboratory. Universities with limited funding face major challenges in upgrading theirlaboratories. Industry advisors tell us they expect our engineering graduates to have modernlaboratory skills. Many engineering faculty members do not possess the modern skills required todevelop and/or

Conference Session

Experiences in Teaching Energy Courses

Collection

2007 Annual Conference & Exposition

Authors

Slobodan Petrovic, Arizona State University; Lakshmi Munukutla, Arizona State University; John Robertson, Arizona State University

Tagged Divisions

Energy Conversion and Conservation

12 science credits, it is left up to students todecide between physics, chemistry, or biology. Those students who had only 3 or 4 credits inchemistry clearly had more difficulty learning this material.This finding is based on the small student population and any further general implications wouldhave to be verified through larger studies. However, the above mentioned division was salientand it appeared worthwhile reporting this anomaly. As a result, the conclusion from this papershould be read only as a call for attention or a warning of a potential problem that there may belack of basic chemistry knowledge for electronic engineering students who obtain theirundergraduate degrees in the US. As we enter the age of clean and renewable energy