Faculty & Researchers

Lauren Cagle

Lauren Cagle

Graduate Research Associate


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Cagle is a Ph.D. student in Rhetoric and Composition in the University of South Florida’s English department. She received the University Fellowship for graduate study at USF, where she has taught first-year composition and new media for technical communication. Cagle’s research interests are grounded in the rhetoric of science and technology. She is especially interested in questions of public participation in science and technology policy production, and the role of women in STEM.

Ioannis Dogaris

Ioannis Dogaris

Postdoctoral Research Scholar

(813) 974-8982
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Ioannis Dogaris is a postdoctoral researcher in sustainable energy at the Patel College of Global Sustainability, University of South Florida. Ioannis holds a Ph.D. in Biotechnology from the National Technical University of Athens (NTUA), Greece, and Bachelors and Masters degree in Biological Applications and Technologies from the University of Ioannina, Greece. His research interests and expertise include sustainable biofuels and bioproducts, biomass and algae technologies.

Joseph W. Dorsey

Joseph W. Dorsey

Adjunct Professor of Global Sustainability; Internship Director

813-974-5883
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Dr. Joseph W. Dorsey is an Adjunct Professor and Internship Director in the Patel College of Global Sustainability (PCGS) at the University of South Florida, Tampa and a LEED Green Associate. Dr. Dorsey holds a B.S. in Human Ecology from Howard University in Washington, D.C. and earned his Ph.D. in Natural Resources and Environment from the University of Michigan, Ann Arbor. He has held faculty positions at Michigan State University, Miami University in Oxford, Ohio, and the University of South Florida – St Petersburg. In PCGS, Dr. Dorsey team teaches the core courses, Concepts and Principles in Sustainability and Systems Thinking: The Key to Sustainability. His research interests include brownfield redevelopment; resource use, recovery and restoration in developed and developing nations; corporate environmental responsibility and sustainability management; and environmental justice and community economic empowerment initiatives. Prior to his doctoral career, Joseph was a clinical nutritionist and public health professional in Africa, the Caribbean, and the United States.

Kebreab Ghebremichael

Kebreab Ghebremichael

Director of the Office of Sustainability, Visiting Assistant Professor

(813) 974 9061
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Dr. Ghebremichael is the Director of the Office of Sustainability and a Visiting Assistant Professor at the Patel College of Global Sustainability. He is a civil engineer with a focus on sustainable and low cost water treatment systems (indigenous and bio-processes). He received his PhD from the Royal Institute of Technology (KTH) in Sweden, his MSc from the University of New South Wales in Australia and BSc from Addis Ababa University in Ethiopia. Dr. Ghebremichael has worked as a senior lecturer at UNESCO-IHE in the Netherlands and the University of Asmara in Eritrea for more than 10 years both at the undergraduate and graduate levels. He has managed and coordinated several research, capacity development and consultancy projects.

Danguang Huang

Danguang Huang

Postdoctoral Scholar

(813) 974-7132
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Dr. Huang is a Postdoctoral Scholar at the Patel College of Global Sustainability, University of South Florida. His work is focusing on one of GWP and WPP funded Projects—development of Integrated Urban Water Management Toolbox. He received his PhD from the University of Birmingham in UK, and BEng from Wuhan University in China. Prior to joining PCGS, he was an urban planner and research engineer of Shanghai Urban Planning and Design Research Institute (SUPDRI), one of Shanghai Government Agency and has involved in multi-discipline projects.

Krishna Khatri

Krishna Khatri

Senior Research Fellow

(813) 974-0083
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Krishna holds PhD in civil engineering (Risk and Uncertainty Analysis) from the Delft Technical University, Netherlands, MSc in Integrated Urban Engineering from UNESCO-IHE, Netherlands, MPA in development study and BE in Civil Engineering from the Tribhuvan University, Nepal. He has more than 10 years of field experiences on infrastructure development (planning, design, and implementation) funded by the government of Nepal and international agencies including UNDP, UNICEF, ADB, WB, DFID, GTZ, JICA. Prior to joining the University of South Florida, he was an Honorary Research Associate (Sept 2007 to April 2011) in the Department of Civil Engineering at the University of Birmingham, UK. His main areas of expertise are sustainable urban infrastructure system design, water resources modeling, and application of soft computing techniques for risk and uncertainty analysis associated to the climate change and other future change drivers

George Philippidis

George Philippidis

Associate Professor of Sustainable Energy

(813) 974-9333
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Dr. Philippidis is a recognized leader in sustainable energy with over 20 years of a successful career directing strategic business units in both the private and public sectors. He started his energy career at the National Renewable Energy Laboratory (NREL) in Denver before moving to the private sector at Thermo Fisher Corporation in Boston.  He then joined the Applied Research Center at Florida International University in Miami, where he created and directed the Center’s energy business before coming to USF. At the Patel College of Global Sustainability Dr. Philippidis directs the development, scale-up, and commercialization of biomass and algae technologies for sustainable production of transportation fuels, renewable power, and value-added chemicals as part of a green global economy. He works closely with the private sector, venture capital firms, and equity investors to bring clean technologies to the market place. Dr. Philippidis holds a Ph.D. in Chemical Engineering from the University of Minnesota and an MBA from the University of Denver.  He has authored numerous articles and book chapters, has given several speeches and media interviews, and holds 11 US and world patents in cleantech.

David Randle

David Randle

Sustainable Tourism Adjunct Faculty


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Dr. David W. Randle is Managing Director of the International Ocean Institute Waves of Change campaign, co-facilitator of the Global Healing Initiative and president and executive director of the WHALE Center.  As the first ordained environmental minister in the world, Dave has successfully coordinated a national campaign to preserve water, wildlife, and wilderness areas on behalf of the Pitkin County Commissioners, served as political and environmental adviser to John Denver and initial program development coordinator for John Denver’s Windstar Foundation.

Matthew Ries

Matthew Ries

Senior Research Fellow


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Matthew Ries is a senior research fellow at the Patel College of Global Sustainability at the University of South Florida. He received his MS in Environmental Engineering from the University of Notre Dame, his BS in Civil Engineering from Valparaiso University, and is a registered Professional Engineer. His research interests are focused on sustainable urban water infrastructure systems, and he is pursuing his PhD.  Matthew is also the Chief Technical Officer at the Water Environment Federation (WEF), a not-for-profit technical and educational organization and in this capacity provides strategic oversight of WEF’s technical initiatives.  Prior to WEF, Matthew worked for 10 years in consulting for municipal and industrial clients for water, wastewater, and stormwater infrastructure projects.

Michael Spencer

Michael Spencer

Instructor of Sustainable Development

813-974-9777
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Michael Spencer, instructor at USF’s Patel College of Global Sustainability (PCGS), has served as the Faculty-in-Charge of the Energy Management Major at Marshall University and direct liaison with regional energy companies. He created and taught courses in Energy Management, Renewable Energy, Energy Management Strategies, Green Management, Environmental Law & Policy and Business Ethics. His private sector experience includes renewable energy consulting in the biofuel sectors where he concentrated on capital acquisition, process efficiencies, and market penetration. He is a strong believer in entrepreneurship having co-founded two small businesses, and has served as a US Navy SEAL. He also lectures at colleges and high schools about creating sustainable, innovation based companies and NGO’s designed to solve complex problems of our society’s critical sectors. He holds an MBA from Arizona State University and a Master’s in International Management (MIM) from the Thunderbird School of Global Management.

Seneshaw Tsegaye

Seneshaw Tsegaye

Visiting Assistant Professor

(813) 974-0311
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Seneshaw Tsegaye is Visiting Assistant Professor at the Patel College of Global Sustainability at the University of South Florida. His current research areas are integrated urban water management as well as resilient and adaptive infrastructures. Furthermore, he has obtained his Ph.D. on Flexible Urban Water Distribution Systems. He received an M.Sc degree in Integrated Urban Engineering from UNESCO-IHE, Institute for Water Education, The Netherlands, and B.Sc in Civil Engineering from Addis Ababa University, Ethiopia. Prior to joining the University of South Florida, he worked as a graduate assistant at University of Birmingham, United Kingdom and has been involved with multiple projects related to urban water management.

Eric Weaver

Eric Weaver

Research Associate

813-974-8337
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Eric Weaver has been an inventor and SWMM flood studies expert for over 20 years. This included multi-million dollar site improvements and the complete redesign of the Gibsonton Phosphate Plant after the major 1988 phosphate spill into the Alafia River. He is currently pursuing an Engineering Doctorate at USF to synergize his community infrastructure experience with sustainable entrepreneurial education. He has been the Editorial Assistant for Organization & Environment: International Journal for Ecosocial Research an academic journal for over seven years, which currently has an impact factor of 1.5, as sponsored by the Patel College.

Michael Welch

Michael Welch

Research Associate


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Michael Welch is a research associate at the Biofuels and Bioproducts Lab of the Patel College of Global Sustainability. He specializes in the design and manufacture of novel photobioreactors, cultivation of algae, and scale-up operations.

Welch got his start in renewable energy as an undergraduate research student at the University of South Florida, where he researched the use of wastewater for fuel production from algae. He has a BS in Biochemistry from USF.