In this article we present a performance comparison of four symmetric block ciphers namely DES, Triple-DES, AES, and Blowfish. Performance evaluation based on CPU execution time is conducted under WinXP and Ubuntu /Linux version 8.10 operating system platforms. The study…

Presentaciones del curso "Internet Programming with Java" impartido en la Université M'Hamed Bougara (Bourmerdes, Argelia) en abril de 2007., Proyecto financiado por la Unión Europea: TEMPUS JEP-32102-2004, Licence Professionnelle Technologies des Applications Web (Professional License for Web Application Technologies).

This paper proposes a novel approach on embedding automatic parallelization in compilers. Due to an increasing popularity of multi-processor and multi-core architectures, software must take advantage of the processing power they offer and increase the level of parallelism as much…

In this note, I propose two extensions to the Java virtual machine (or VM) to allow dynamic languages such as Dylan, Scheme and Smalltalk to be efficiently implemented on the VM. These extensions do not affect the performance of pure…

This paper introduces a new set of compact interactive simulations developed for the constructive learning of computer networks concepts. These simulations, which compose a virtual laboratory implemented as portable Java applets, have been created by combining EJS (Easy Java Simulations)…

This paper describes the new features included in the Robolab 2 System, which permits the students to
work with a simulation of and industrial robot and carry out operations with the real robot through teleoperation.
Among these features, the flexibility…

In this paper a methodology for accesing scientific data repositories on data grids is proposed. This methodology is based on ontology specification and knowledge representation. The concept of Knowledge Perspective is introduced, as the action of applying particular scientific conjectures…

Ricardo Ambrose ... [et al.]., Title from cover. "March, 1998.", Includes bibliographical references (p. 8-9).

This paper introduces a new set of compact interactive simulations developed for the constructive learning of computer networks concepts. These simulations, which compose a virtual laboratory implemented as portable Java applets, have been created by combining EJS (Easy Java Simulations)…

LOCAL VARIABLES ARE FUNDAMENTAL TO DESCRIBE AND IMPLEMENT COMPUTER ALGORITHMS AND TO SPECIFY SOME OF THEIR PROPERTIES SUCH AS CORRECTNESS, TERMINATION AND PERFORMANCE. IN THIS PAPER, WE ADDRESS THE RUN-TIME ASSERTION CHECKING PROBLEM INVOLVING LOCAL VARIABLES IN JAVA PROGRAMS USING…