5th Iberian Conference on Information Systems and Technologies

In the past several years, various optimization algorithms had been implemented on the project total cost minimization problem. Lately, it was developed an application that serves as a central platform that integrates all those previous implementations. Currently, such platform allows the access and execution of each one of the other utilities as modules/plugins. Each of which can be configured to... View full abstract»

This article is the result of a project, still under development, which intends to implement methods of comparing GPS traces in a car sharing system. With the aim of identifying similar itineraries as well as suggesting car sharing hypothesis that respect the criteria defined by the system's user, one has developed algorithms. One of the main goals of this project is related with the need to decre... View full abstract»

This article aims to present the preliminary results of a survey in Uruguayan SMEs enterprises with the objective of studying aspects of IT governance. Analyzes the state of IT governance in this kind of enterprises, the degree of strategic alignment, the allocation of responsibilities and the decisión-making processes in these companies. View full abstract»

This paper describes the making of the e-Culturas corpus from written texts by 10-11-year-old-children. These texts have been written from the memory of some event in which the kid has felt fear, hapiness or sadness. The purpose of the corpus in this report is the training of an automatic classifier for these sentiments. The results of the evaluation of the classifier are hopeful, in spite of bein... View full abstract»

In recent years the behavior of the parcel delivery market has undergone significant changes influenced by increased competitiveness, concern with the environment, electronic commerce, the increase in the number of customers, reducing the size of applications; expansion of the collection sites and distribution, increasing the flow of urban vehicles, increasing fleet; complexity of the operations o... View full abstract»

Our research group of education through ICTs has initiated a project on inclusive learning environment for deaf people. Since the beginning of the project the group is aware of the need to integrate new methodologies and technologies for distance education. The set of these new methodologies and technologies has been adjusted for the specific target audience. Also it is important the interdiscipli... View full abstract»

This work deals with a detailed morphological analysis of various Multifocal Electroretinographic (mfERG) records from a number of control subjects and other affected by glaucoma. We study the variation in the morphology of these signals, according to its topographic origin in the retina, and glaucomatous records are compared with healthy records from the same topographic position. The purpose of ... View full abstract»

In this article we present an analysis of the potential for organizational interoperability in a cluster of local government in Portugal consisting of the City Council, the Land Registry Office and the Tax Office of Portalegre. Based on an exhaustive survey of procedures we identified the direct and indirect interactions between these three agencies and measured the rate of organizational interope... View full abstract»

Ultrasonography is one of the safest methods in medical imaging, however the segmentation of such images still is a difficult task. A robust segmentation of the heart cavities and a 3D view are needed to better understand the congenital malformations and defects in children hearts. In this work we propose an automatic segmentation method based on geometric models to extract the boundaries of the f... View full abstract»

Several medical imaging techniques are used to perform the Pulmonary Embolism diagnose. Multimodality imaging is usually used to achieve better morphological details. In this work we applied and compared 3D registration algorithms, after the segmentation of thoracic CT exam, ventilation and perfusion SPECT exams. The registration routine is applied using rigid body transformations, affine transfor... View full abstract»

Measuring response times for a Web system is essential to evaluate its performance. This paper presents a comparison of the response times for a Web-based Electronic Health Records (EHRs) system in Ophthalmology, TeleOftalWeb. It makes use of different models of open-source native XML databases: dbXML 2.0, Xindice 1.2 and eXist 1.1.1. The system is modeled using queueing theory (the M/M/1 model) a... View full abstract»

Distance learning has developed greatly in recent years, and several major technological approaches have been defined. One of these is t-learning, that is, the provision of educational services over Interactive Digital TV. In this paper, we present a Java-based software architecture for the development of distributed t-learning applications and services, based on freely available technologies. The... View full abstract»

Portugal started its “formal” path to the Information Society in 1997 with the creation of the "Green Paper on the Information Society". In 2000, the “Operational Programme for the Information Society” was created and based on three main pillars. Having been created as part of the second pillar, “Portugal Digital”, the “Digital Cities and Regions&#x... View full abstract»

This paper describes the Hybrid User Centered Development Methodology (HUCDM). This methodology is a simple, iterative and incremental development process. The methodology is based on structured disciplined development processes, on principles of User Centered Development (UCD) processes, specified in the International Organization for Standardization - ISO 13407, as well as practices and values o... View full abstract»

Software packages for educational purposes are increasingly important for classroom use, because they are a valuable way to motivate learning. However, the resources available on the market, with the designation of educational software, often have dubious quality. This led the authors to reflect on the process of evaluating the quality of a given educational software and develop tools that allow t... View full abstract»

This article presents a conceptual model of a new information system that enhances the formation of inter-organizational networks and whose objective is to share information of business opportunities between members of a network. It is also a framework of inter-organizational cooperation as a competitive factor and the role of information technology can take in the development of cooperation netwo... View full abstract»

This paper tries to show that Group Support Systems techniques and research results provide an adequate framework to develop public participation support systems that go beyond e-voting and aggregation of citizens' preferences. It is however necessary to look into political science and understand what kind of initiatives need to be supported and what requirements they pose. Only then the full pote... View full abstract»

In a Data Warehouse (DW), ETL processes (Extraction, Transformation, Load) are responsible for extracting, transforming and loading data from the data sources into the DW. A good design of these processes in the early stages of a DW project is essential to avoid making bad decisions as a result of incorrect data. In this paper, we apply the method of systematic review to identify, extract and anal... View full abstract»

Promoting students success requires the implementation of processes and mechanisms that allows the closely monitoring of the students academic activities. Although essential, the activities involved in this complex process do not take place in many higher education institutions due to the lack of appropriate practices and an adequate technological support that sustain these practices. To overcome ... View full abstract»

The importance of wireless communications has been growing. Wi-Fi and FSO are very important technologies in this context. Performance is a very relevant issue, leading to more reliable and efficient communications. Laboratory measurements are made about several performance aspects of Wi-Fi (IEEE 802.11 a, g) point-to-point links, namely at OSI levels 4 and 7. An FSO medium range link has been suc... View full abstract»

The paper we are presenting is still in an experimental phase and it is being developed in a workshop for mathematical problems. We try to create teaching and learning sequences of the mathematical activity using a new didactical device, which is currently investigated and tested, that can be considered as a product of Didactical Engineering (Trajectory of Study and Research, hereinafter TSR), whe... View full abstract»

For many software projects the complexity of the final product has increased to a level where it is impossible to build the whole application from the scratch. So, many organizations consider subcontracting as an option for software development. This paper shows generic problems related to software subcontracting. Also, an analysis of CMMI-DEV subcontracting practices to solve these problems is pr... View full abstract»

Information Technology Infra-structure Library (ITIL) is the most popular “best practices” framework for managing Information Technology (IT) services. However, implementing ITIL not only is very difficult but there also are no best practices for implementing ITIL. As a result, ITIL implementations are usually long, expensive, and risky. In this paper, we propose a maturity model to ... View full abstract»

The Internet is extremely important for the publishing of information and for the interaction between the society elements. Due to this, it's essential that the web presents itself accessible to all, including those with any kind of disability. An accessible web may help the handicapped citizens interact with the society in a more active way, including the electronic public procurement platforms. ... View full abstract»

Mobile use proliferation and the change from voice-only communications towards mobile multimedia contents is a reality. The emerging mobile multimedia technologies combined with the advances in local-based solutions open innumerable opportunities to offer intelligent infotainment services of mobile multimedia contextualized contents provision. The aim of the work described in this paper is to expl... View full abstract»