An accomplished Leader with successful problem solving and technology integration results.

Dr. Hammann gained experience in Remote Sensing & Geospatial Solutions over land and water, developing and delivering services from a large suite of imaging satellites from low to very high spatial and spectral resolution, from optical and synthetic aperture RADAR (SAR) sensors. He was part of DigitalGlobe’s Next Generation Product team leading the WorldView-3 product conception team after the combination with GeoEye. At GeoEye (ex-Orbimage) he was the Sr. Director of Product Development and the founding Chief Oceanographer for the Marine Services business unit, growing the Marine Services unit from a start-up to a multi-million dollar business. Prior to joining DigitalGlobe, Greg spent over 16 years working in Mexico, first teaching at the University of Baja California, and then leading a research team and teaching at the Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE).

Greg graduated with a Ph.D. degree in Earth Systems and Geoinformation Sciences at George Mason University, with a specialization in Remote Sensing.  He carried out PhD studies (ABD) is Fisheries Oceanography at the Univ. of California, San Diego, received a MS in biological oceanography from Oregon State University, and a BA from  Whittier College, in California. Mr Hammann has been an invited speaker around the world including a delegate for the United National Conference on Remote Sensing for Africa; he has authored peer-reviewed publications and numerous outreach articles. Greg lives in northern Virginia with his wife and two children.


christianaChristiana D Kumalasari, Ph.D.

Dr. Christiana D. Kumalasari has a broad knowledge of higher education processes and requirements. Her initial education included a Bachelor degree in Pre-Medicine and a Medical Doctor degree from Trisakti University School of Medicine, Jakarta, Indonesia. She came to Columbia, Missouri in 1999 and continued her education at University of Missouri. She earned her M.Ed. and Ph.D. in Educational Technology from University of Missouri–Columbia, with supporting areas of specialization in Adult Learner, Education Leadership and Policy Analysis.

Dr. Kumalasari worked at School of Information Science and Learning Technologies at University of Missouri– Columbia as Course Instructor for over eight years and as e-Learning Coordinator/Manager for four years. At University of Missouri, she taught several courses, such as Web Design and Development, Digital Media, Flash Authoring, and Online Portfolio. She has experience in using interactive multimedia to support the learning process as well as a variety of Learning Management Systems (e.g., Shadow Network Space, Blackboard, WebCT, Sakai, Flexnet, and Canvas). Dr. Kumalasari was acknowledged for her teaching abilities in helping students to learn the course materials; and because of her teaching excellence, she received awards three times (High Flyer Teaching Awards in 2005, Thank-A-Prof Appreciation in 2007, and Graduate Student Instructor of the Year in 2009). Dr. Kumalasari’s research interests include implementation of technologies in supporting students’ learning, teaching effectiveness in face-to-face classroom and online learning environment, and problem-based learning in professional education, especially in medical education. She has presented at several conferences and has numerous academic journal publications.

Outside her professional interest, she likes reading, swimming, cooking, gardening, and enjoying outdoor activities with her husband and two teenage daughters.


Dr. Cynthia Croissant, Dr. Cynthia Croissant, Ph.D. 

Dr. Croissant, earned a PhD in Geography with a minor in the Human Dimensions of Global Environmental Change at Indiana University in Bloomington. Previously, she received a MS in Environmental Resource Planning, and a BS in geography with a concentration in the environment and natural resources and a minor in Public Law from Missouri State University. Dr. Croissant has experience teaching physical geography, cartography, and GIS, and participated in studies at research centers at Indiana University. While at the Center for Institutions, Population, and Environmental Change and the Anthropological Center for Training and Research, Dr. Croissant worked with prominent researchers Emilo Moran and Elinor Ostrom – the first woman to ever win the Nobel prize in economics. Cynthia has authored a number of peer reviewed articles and books on topics including oil resource use in Azerbaijan, and forest resource use in Indiana.