Gopi Kandaswamy Computer Science Department, Indiana University, 150 S. Woodlawn Avenue, Bloomington, Indiana 47405 (gkandasw@cs.indiana.edu). Mr. Kandaswamy is a Ph.D. student in the Computer Science Department at Indiana University, where he is currently a Research Assistant under the guidance of Professor Dennis Gannon. He received a B.E. degree from Bharathidasan University, India, and an M.S. degree from Indiana University. Mr. Kandaswamy's current research interests include generic application factories for web services and grid workflow systems.

Liang Fang Computer Science Department, Indiana University, 150 S. Woodlawn Avenue, Bloomington, Indiana 47405 (lifang@cs.indiana.edu). Mr. Fang is a Ph.D. student in the Computer Science Department at Indiana University, where he is a Research Assistant responsible for investigating authorization and other security solutions to the LEAD project. He received a B.E. degree in computer engineering from Nanjing University of Science and Technology, China, and an M.S. degree in computer science from Indiana University. Mr. Fang's current research interests include grid computing, web services, portals, and their security and scalability issues.

Yi Huang Computer Science Department, Indiana University, 150 S. Woodlawn Avenue, Bloomington, Indiana 47405 (yihuan@cs.indiana.edu). Mr. Huang is a doctoral candidate in the Computer Science Department at Indiana University, under the guidance of Dr. Dennis Gannon. He holds a B.E. degree from Beijing University of Technology, China, and an M.S. degree from Florida State University. Mr. Huang's research interests include web services, distributed messaging systems, grid computing, system integration, and analysis of message pattern and workflow.

Satoshi Shirasuna Computer Science Department, Indiana University, 150 S. Woodlawn Avenue, Bloomington, Indiana 47405 (sshirasu@cs.indiana.edu). Mr. Shirasuna is a Ph.D. student in the Computer Science Department at Indiana University. He works with Dr. Dennis Gannon as a Research Assistant. He received B.S. and M.S. degrees from Tokyo Institute of Technology, Japan. Mr. Shirasuna's research interests include software tools for distributed systems, and workflow and security performance for web and grid services.

Suresh Marru Computer Science Department, Indiana University, 150 S. Woodlawn Avenue, Bloomington, Indiana 47405 (smarru@cs.indiana.edu). Mr. Marru is a Scientific Computing Research Specialist working with Dr. Dennis Gannon on the LEAD and Teragrid Science Gateways projects. He received a B.E. degree in electrical and electronics engineering from Osmania University, India, and an M.S. degree in electrical and computer engineering from the University of Oklahoma. Mr. Marru's research interests include distributed and grid computing, portals, web services, and developing user-friendly interfaces with atmospheric applications.

Dennis Gannon Computer Science Department, Indiana University, 150 S. Woodlawn Avenue, Bloomington, Indiana 47405 (gannon@cs.indiana.edu). Dr. Gannon is a professor of computer science at Indiana University. He received his Ph.D. degree in computer science from the University of Illinois and his Ph.D. degree in mathematics from the University of California. He was on the faculty at Purdue University from 1980 to 1985. Dr. Gannon's research interests include software tools for high-performance distributed systems and problem-solving environments for scientific computation.