Calendar of Events.

The article presents information on various conferences which will be held in 1981. The Second Annual Conference on Information Resources Management will take place in Washington D.C. The Software Engineering Standards Workshop will be held in San Francisco, California. The Ninth European Conference on Computer Measurement will take place in Copenhagen, Denmark. The Third Symposium on Mathematical Programming With Data Perturbations will be held at George Washington University in Washington D.C. The 11th International Symposium on Multiple-Valued Logic will take place in Oklahoma City, Oklahoma. The Third Conference on Databases in the Humanities and Social Sciences will take place in Ann Arbor, Michigan. The conference entitled "Trends and Applications 1981: Advances in Software Technology," will be held in Gaithersburg. The Special Conference on the Applications of Discrete Mathematics will take place at the Reonselaer Polytechnic Institute in New York. The 1981 National Computer Graphics Association Conference and Exposition will be held in Baltimore.