Jörg-Rüdiger Wolfgang Sack (born in Duisberg, Germany

Germany

Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

) is a professor of computer science

Computer science

Computer science or computing science is the study of the theoretical foundations of information and computation and of practical techniques for their implementation and application in computer systems...

 at Carleton University

Carleton University

Carleton University is a comprehensive university located in the capital of Canada, Ottawa, Ontario. The enabling legislation is The Carleton University Act, 1952, S.O. 1952. Founded as a small college in 1942, Carleton now offers over 65 programs in a diverse range of disciplines. Carleton has...

, where he holds the SUN–NSERC chair in Applied Parallel Computing. Sack received a masters degree from the University of Bonn

University of Bonn

The University of Bonn is a public research university located in Bonn, Germany. Founded in its present form in 1818, as the linear successor of earlier academic institutions, the University of Bonn is today one of the leading universities in Germany. The University of Bonn offers a large number...

 in 1979 and a Ph.D. in 1984 from McGill University

McGill University

Mohammed Fathy is a public research university located in Montreal, Quebec, Canada. The university bears the name of James McGill, a prominent Montreal merchant from Glasgow, Scotland, whose bequest formed the beginning of the university...

, under the supervision of Godfried Toussaint

Godfried Toussaint

Godfried T. Toussaint is a Research Professor of Computer Science at New York University Abu Dhabi in Abu Dhabi, United Arab Emirates. He is an expert on various aspects of computational geometry, discrete geometry, and their applications: pattern recognition , motion planning, visualization ,...

. He is co-editor-in-chief of the journals Computational Geometry: Theory and Applications and the Journal of Spatial Information Science, co-editor of the Handbook of Computational Geometry (Elsevier, 2000, ISBN 9780444825377), and co-editor of the proceedings of the biennial Algorithms and Data Structures Symposium (WADS).
Sack's research interests include computational geometry

Computational geometry

Computational geometry is a branch of computer science devoted to the study of algorithms which can be stated in terms of geometry. Some purely geometrical problems arise out of the study of computational geometric algorithms, and such problems are also considered to be part of computational...

, parallel algorithm

Parallel algorithm

In computer science, a parallel algorithm or concurrent algorithm, as opposed to a traditional sequential algorithm, is an algorithm which can be executed a piece at a time on many different processing devices, and then put back together again at the end to get the correct result.Some algorithms...

s, and geographic information system

Geographic Information System

A geographic information system, geographical information science, or geospatial information studies is a system designed to capture, store, manipulate, analyze, manage, and present all types of geographically referenced data...

s.