Mensaje del director

Reflexiones del Director / From the Director Information — a bridge over the divide 1

1 Remarks made to participants at the V Regional Congress on Health Sciences Information (CRICS V), Havana, Cuba, 24 April 2001. It has been three years since we met in San José, Costa Rica, at the Fourth Pan American Congress on Health Sciences Information, and I have had many opportunities to reflect on the meaning of the Declaration you made there and its relevance to the Pan American Health...

Deputy Director

A Generic Method to Extend Message Space of a Strong Pseudorandom Permutation Método Genérico para Extender el Espacio del Mensaje de una Permutación Pseudo-aleatoria Fuerte

Let E be a strong pseudorandom permutation (or SPRP) secure enciphering scheme (i.e., a length-preserving encryption scheme) which can only encrypt messages of size multiple of n, the block size of the underlying block cipher. There are several such constructions, e.g., CBC mode or cipher block chaining mode. In this paper we present how a secure enciphering scheme E can be obtained which can e...

Director Oriented Virtual Cinematography

Traditionally film making costs a huge amount of money and a great deal of time and labor. Converting traditional techniques of film making into virtual techniques could save money, time and labor. In this research, we have established a director friendly virtual camera work, which gives a film director the freedom to look through the shots before shooting. This way, a director is able to make ...

Director ’ s Corner

What I would like to discuss and bring your attention to is my recent trip to Washington, D.C., on Wednesday, December 12, 2007. I traveled, to testify before a House subcommittee citing the potential for acts of terrorism on any of the thousands of chemical processing plants throughout the country and urged Congress to give the Department of Homeland Security permanent and continuing authority...