Hybrid dynamic spatial approximation trees are recently proposed data structures for searching in metric spaces, based on combining the concepts of spatial approximation and pivot based algorithms. These data structures are hybrid schemes, with the full features of dynamic spatial…

El uso activo de los sistemas de información proporciona acceso fácil y más rápido a los datos. Ayuda, además, a proporcionar servicios de mejor calidad a los usuarios en muchos campos. En este estudio, el papel de los sistemas de…

El objetivo de este artículo es revisar los métodos estándares aplicados para evaluar el control de calidad de productos cartográficos en el contexto de los sensores remotos. Adicionalmente se persigue presentar una metodología que permita evaluar la precisión posicional de…

Los sistemas de información geográfica (SIG) son una herramienta computarizada ampliamente utilizada para solucionar diversos problemas de la ingeniería que implican el uso de datos espaciales. La tecnología de los SIGs incrementa la capacidad para solucionar problemas, lo cual incluye…

The main purpose of this book is to present the contents of an introductory course in databases. In this regard, one can find a number of material validity and recognized different scopes. This work is developed under the guidelines that…

Applying design patterns is considered a helpful technique for designing software systems.
Patterns description, however, results not sufficiently precise providing a weak understanding and making it difficult to be certain when a pattern is being used correctly. We have formally…

Software tools processing partially common set of data should share an understanding of what these data mean. Since ontologies have been used to express formally a shared understanding of information, we argue that they can be used to improve integration…

The term “Federated Databases” refers to the data integration of distributed, autonomous and heterogeneous databases. However, a federation can also include information systems, not only databases. When integrating data, several issues must be addressed. Here, we focus on the problem…

Product-line architectures, i.e. a software architecture and component set shared by a family of products, represents a promising approach to achieving reuse of software. Several companies are initiating or have recently adopted a product-line architecture. However, little experience is available…

Using COTS software promises faster time-to-market, which can yield substantial advantages over competitors with regards to earlier placement of a new product on a market. At the same time, component-based software introduces risks, such as unknown quality properties of the…