Question: Vijaya Melnick is a professor at what public university in Washington, D.C.?

<P0-S0> Vijaya Lakshmi Melnick (born November 19, 1937) is an India-born American academic specializing in biological and environmental sciences and immunology. <P0-S1>  She is Professor Emeritus of Biological and Environmental Sciences at the University of the District of Columbia. <P0-S2>  She was the First Vice President and then Co-President of the International Health Awareness Network, an affiliate of the United Nations. <P0-S3>  She holds memberships on the boards and executive committees of national and international organizations related to either health and education or both. <P0-S4>  She has written several research papers and books. <SEP> <P1-S0> Joseph-Achille Mbembe, known as Achille Mbembe (born 1957), is a Cameroonian philosopher, political theorist, and public intellectual. <P1-S1>  He was born near Otélé in French Cameroons in 1957. <P1-S2>  He obtained his Ph.D. in history at the University of Sorbonne in Paris, France, in 1989. <P1-S3>  He subsequently obtained a D.E.A. in political science at the Institut d’Etudes Politiques in the same city. <P1-S4>  He has held appointments at Columbia University in New York, Brookings Institution in Washington, D.C., University of Pennsylvania, University of California, Berkeley, Yale University, Duke University and Council for the Development of Social Science Research in Africa (CODESRIA) in Dakar, Senegal. <P1-S5>  He was Assistant Professor of History at Columbia University, New York, from 1988-1991, a Senior Research Fellow at the Brookings Institution in Washington, D.C., from 1991 to 1992, Associate Professor of History at the University of Pennsylvania from 1992 to 1996, Executive Director of the Council for the Development of Social Science Research in Africa (Codesria) in Dakar, Senegal, from 1996 to 2000. <P1-S6>  Achille was also a visiting Professor at the University of California, Berkeley, in 2001, and a visiting Professor at Yale University in 2003. <P1-S7>  He is currently a Research Professor in History and Politics at Harvard University's W.E.B. Dubois Research Institute. <SEP> <P2-S0> The University of the District of Columbia (UDC) is the only public university in the U.S. capital of Washington, D.C. UDC is one of the few urban land-grant universities in the country and a member school of the Thurgood Marshall College Fund. <SEP> <P3-S0> Haywood Jefferson Powell (born April 25, 1954) is a law professor at Duke University. <P3-S1>  Before his return to Duke, he served in the Office of Legal Council at the United States Justice Department in Washington, D.C. Before this second tenure in the Justice Department, Powell was the Lyle T. Alverson Professor of Law at The George Washington University in Washington, D.C., a post which he accepted in 2010. <P3-S2>  Before joining The George Washington University Law Faculty, Powell had been a professor of Law at Duke University since 1987. <P3-S3>  In 1999 the Duke Bar Association presented Powell with the "Excellence in Small Section Teaching" Award, and in the academic year 2001–2002, he was Duke University's "Scholar/Teacher of the year". <P3-S4>  More recently, he has been named Frederic Cleaveland Professor of Law and Divinity. <P3-S5>  Powell is currently the Samuel Rubin Visiting Professor of Law at Columbia Law School, where he teaches constitutional law.