Salesian Journal on Information Systems

3

Authors: PALAZZO Moreira de Oliveira, José

In this paper I present a discussion on the university career which should reflect the possible dichotomy research-teaching.

9

Authors: SÁ, A. G. C.; PEREIRA, M. R.; MOURA, P. M.; PEIXOTO, L. H. R.

This paper presents a comparative study of the performance of multithreaded applications in different scenarios. These applications use the concept of threads to solve tasks. To make each scenario being evaluated were considered four factors: threads programming platform (or library), operating system, operating system architecture and the priority of running processes. We analyzed the performance obtained in mathematical applications in a multicore processor. The runtime operations and the number of parameters were used in comparative performance. Results showed that the factors referred to are actually relevant to the parallelism inherent to multicore architectures.

21

Authors: ADRIANO, C. M., RICARTE, I. L. M.

Digital annotation systems are usually based on partial scenarios and arbitrary requirements. Accidental and essential characteristics are usually mixed in non explicit models. Documents and annotations are linked together accidentally according to the current technology, allowing for the development of disposable prototypes, but not to the support of non-functional requirements such as extensibility, robustness and interactivity. In this paper we perform a careful analysis on the concept of annotation, studying the scenarios supported by digital annotation tools. We also derived essential requirements based on a classification of annotation systems applied to existing tools. The analysis performed and the proposed classification can be applied and extended to other type of collaborative systems.