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For the Maya, unlike the West, mathematics goes beyond numerals and operations between them. According to their Cosmovision, the Godhead, who created the universe, is sovereign in terms of mathematical calculation (Cabrera, 1992). The Mayan mathematics provides the possibility to perform arithmetic operations of addition, subtraction, multiplication, division and calculation of simple roots, as the Mayan culture was able to synthesize the amount by three symbols and they synthesize the value by based twenty systems (Calderon, 1966). This article pretends do recognition the Mayan numerals, their metaphorical conception and some of their arithmetic operations. [ABSTRACT FROM AUTHOR]

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The development of ICT has created a gap between computing processes and the huge volume of available information. Institutions need tools for knowledge management in collaborative environments and these tools should guarantee certain level of quality of service. By other hand, Web services are to become in the industry standard for interoperability but they are far away of providing the required robustness level. This paper proposes to adapt the MAS principles of electronic contracting at supervising knowledge management processes for knowledge sharing using web services, and to apply the descriptive capacity of OWL, as a formal semantic language in order to improve the autonomy of underneath computing processes. A SupervIsed CoLlabOrative System model (SICLOS) was defined --supervised from a global perspective, based on the semantic management of actions and resources. Dynamic processes control is improved and thereby, the knowledge management service. In this paper, the achieved results are discussed. [ABSTRACT FROM AUTHOR]

The representations in which today's Web is based basically describe the way the information is shown, but not its meaning. This brings about that the searches carried out make their processes based in key words without any semantic relationship with the pages' contents. The semantic Web, as a new vision, suggests the addition of the descriptive component to the resources available, in order to extend the current representations. The present work deals with a study on web site positioning, semantic Web and its technologies, as basis for suggesting a description of a Web site, as a more natural process that takes into account the semantics of the managed content. [ABSTRACT FROM AUTHOR]

En todas las épocas el conocimiento ha resultado un componente importante en la consecución del desarrollo. En los últimos años esta relación se ha tornado mucho más dependiente, al extremo de que ya se vislumbra como el recurso limitante en los procesos productivos, por delante de otros factores tradicionales. Se impone entonces un nuevo reto para los países subdesarrollados. Explicar, a partir de los cambios que experimenta la economía mundial, cómo se manifiesta el nuevo protagonismo del conocimiento como recurso económico y cuáles son los aspectos que influyen en su generación, esto constituye el objetivo del presente trabajo. [ABSTRACT FROM AUTHOR]