HumanISE

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This service focuses its action on information systems applied to the sectors of autarchies, industry, commerce, health, telecommunications and central and regional administration.

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    3D Simulators in Professional Training Learning complex tasks overcoming material, economic, and human constraints
    ( 2013) Bernardino Lopes,JB ; André Dias ; Cravino,JP ; Maia,AM ; Leonel Morgado ; Paulo Martins ; Gonçalo Conde Matos ; Fernandes,P
    This paper is about the development of 3D simulators for supplementary instruction in professional training with complex learning tasks and material, human and economic constraints. We present a theoretical framework describing and explaining how a simulator can support the fundamental interaction dynamics in learning settings (interaction with reality, with others and with the learner himself. We describe the development of an actual 3D simulator (for installing the engine in an F-16 fighter aircraft) and present its next phases. We discuss how our theoretical framework fits and explains the development phases of a 3D simulator to meet the intended learning outcomes and how it can help in the development of simulators with similar purposes.
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    3DWikiU - 3D Wiki For Urban Environments
    ( 2011) António Coelho ; Pedro Brandão Silva ; Luís Gonzaga Magalhães ; Augusto Sousa ; José Cruz ; Fernando Ferreira ; Artur Rocha ; João Moura ; Maximino Bessa ; Miguel Correia Melo
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    Accessibility and Usability on the Internet for people with intellectual disabilities
    ( 2009) Luís Gonzaga Magalhães ; Tânia Rocha ; Martinho Gonçalves ; Maximino Bessa ; Francisco Godinho
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    Accessibility in Software Engineering: Pursuing the Mainstream from a Classroom
    ( 2018) Silva,J ; Branco,F ; Pereira,A ; José Luís Martins ; Ramiro Gonçalves ; 5754 ; 6516
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    Accessible options for Deaf people in e-Learning platforms: technology solutions for Sign Language translation
    ( 2015) Paulo Martins ; Rodrigues,H ; Tânia Vilela Rocha ; Francisco,M ; Leonel Morgado
    This paper presents a study on potential technology solutions for enhancing the communication process for deaf people on e-learning platforms through translation of Sign Language (SL). Considering SL in its global scope as a spatial-visual language not limited to gestures or hand/forearm movement, but also to other non-dexterity markers such as facial expressions, it is necessary to ascertain whether the existing technology solutions can be effective options for the SL integration on e-learning platforms. Thus, we aim to present a list of potential technology options for the recognition, translation and presentation of SL (and potential problems) through the analysis of assistive technologies, methods and techniques, and ultimately to contribute for the development of the state of the art and ensure digital inclusion of the deaf people in e-learning platforms. The analysis show that some interesting technology solutions are under research and development to be available for digital platforms in general, but yet some critical challenges must solved and an effective integration of these technologies in e-learning platforms in particular is still missing. (C) 2015 The Authors. Published by Elsevier B.V.
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    Accessible software development: a conceptual model proposal
    ( 2019) Ramiro Gonçalves ; José Luís Martins ; Au Yong Oliveira,M ; Pereira,A ; Sousa e Silva,JSE ; Frederico Branco ; 5754 ; 6516 ; 6499
    Equal access to all software and digital content should be a reality in the Digital Era. This argument is something defended both by existing regulations, norms and standards, and also business organizations and governments. Despite this acknowledgement, the reality is still far from the desired equality. For certain groups of disabled or impaired citizens, such as the visually impaired, the existence of e-accessibility compliance represents an opportunity to integrate, in a more simple and straightforward manner, their societies. Despite the existing poor results on e-accessibility compliance, the mentioned citizens insist on using digital devices in their daily lives. Even though, in the last decade, multiple standards and regulations have been published towards indicating how to develop accessible digital user interfaces, there are still two major issues surrounding its implementation: the complexity and disparity of the documents containing the abovementioned norms, and also the lack of e-accessibility know-how by software experts. With this in mind, a proposal for an accessible software development model that encompasses e-accessibility incorporation as one of the development process activities has been presented. This model might represent a very interesting support tool for software development organizations and a novel resource for learning and training institutions to be able to improve their computer science and informatics students' skills on e-accessibility.
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    Adaptation and Validation of the Igroup Presence Questionnaire (IPQ) in a Portuguese Sample
    ( 2016) José Vasconcelos Raposo ; Maximino Bessa ; Miguel Correia Melo ; Luis Barbosa ; Rui Pedro Rodrigues ; Teixeira,CM ; Cabral,L ; Augusto Sousa
    The present study aims (a) to translate and adapt the Igroup Presence Questionnaire (IPQ) to the Portuguese context (semantic equivalence/ conceptual and content validity) and (b) to examine its psychometric properties (reliability and factorial validity). The sample consisted of 478 subjects (285 males and 193 females). The fidelity of the factors varied between 0.53 and 0.83. The confirmatory factor analysis results produced a 14-item version of IPQ-PT, accepting covariance between residual errors of some items of the instrument, as the best structural representation of the data analyzed. The CFA was conducted based on a three-variable model. The fit indexes obtained were X-2/df = 2.647, GFI = .948, CFI = .941, RSMEA = .059, and AIC = 254. These values demonstrate that the proposed Portuguese translation of the IPQ maintains its original validity, demonstrating it to be a robust questionnaire to measure the sense of presence in virtual reality studies. It is therefore recommended for use in presence research when using Portuguese samples.
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    Adaptation and Validation of the Temple Presence Inventory in a Portuguese Population
    ( 2019) José Vasconcelos Raposo ; Miguel Correia Melo ; Cabral,L ; Teixeira,CM ; Maximino Bessa ; 6565 ; 5095 ; 5408
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    Adapting traditional web applications to new user interfaces provided by rich internet applications
    ( 2009) Nelson Bilber Rodrigues ; Lino Oliveira ; António Coelho
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    Adaptivity and safety in location-based games
    ( 2017) João Tiago Jacob ; Rui Silva Nóbrega ; António Coelho ; Rui Pedro Rodrigues
    Location-based games require, among other things, obtaining or computing information regarding the players' physical activity and real-world context. Additionally, ensuring that the players are assigned challenges that are adequate and safe for the current context (both physical and spatial) is also important, as it can improve both the gaming experience and the outcomes of the exercise. However, the impact adaptivity has in the specific case of location-based exergames still has not been researched in depth. In this paper, we present a location-based exergame capable of adapting its mechanics to the current context. © 2017 IEEE.
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    Age and level of education impact on expectancy and perceived similarity between virtual and real touristic environments
    ( 2019) Magalhaes,M ; Maximino Bessa ; António Coelho ; Miguel Correia Melo ; 5095 ; 3132 ; 5408
    This paper focuses on the combination of 360-degree video and virtual reality for improving the touristic experience. Three scenarios were considered in this study: two 360-degree video visualizations, each one related to different touristic places, both presented in an immersive way, followed by an actual visit to those places. By comparing these situations, it was intended to determine the degree of perceived similarity between the virtual and the corresponding real sites, and to analyze if the users' expectancy was fulfilled. This research comprised a qualitative analysis using data collection based on questionnaires, which were applied to a sample consisted of 45 participants. The independent variables of the study were the participants' age and level of education. The results show no statistically significant impact between the two independent variables (users'age and level of education) and perceived similarity and users' expectancy. Our findings suggest that virtual tourism can act as an efficient promotion tool, considering that users' perceived destination image is not compromised regarding their age or level of education. © 2019 IEEE.
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    Age group differences in performance using distinct input modalities: A target acquisition performance evaluation
    ( 2017) Carvalho,D ; Maximino Bessa ; Magalhaes,L ; Miguel Correia Melo ; Carrapatoso,E
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    Age group differences in performance using diverse input modalities: insertion task evaluation
    ( 2016) Carvalho,Diana ; Maximino Bessa ; Magalhães,Luis ; Carrapatoso,Eurico
    Novel input modalities such as touch, tangibles or gestures try to exploit human's innate skills rather than imposing new learning processes. However, no work has been reported that systematically evaluates how these interfaces influence users' performance, that is, assesses if one interface can be more or less appropriate for interaction regarding: (1) different age groups; and (2) different basic tasks, as content insertion or manipulation. This work presents itself as an exploratory evaluation about whether or not the users' efficiency is indeed influenced by different input modalities and age. We conducted a usability evaluation with 60 subjects to understand how different interfaces may influence the speed and accuracy of three specific age groups (children, young adults and older-adults) when dealing with a basic content insertion task. Four input modalities were considered to perform the task (keyboard, touch, tangibles and gestures) and the methodology was based on usability testing (speed, accuracy and user preference). Overall, results show that there is a statistically significant difference in speed of task completion between the age groups, and there may be indications that the type of interface that is used can indeed influence efficiency in insertion tasks, and not so much other factors like age. Also, the study raises new issues regarding the "old" mouse input versus the "new" input modalities. © 2016 ACM.
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    Ambient radioactivity and atmospheric electric field: A joint study in an urban environment
    ( 2020) Susana Alexandra Barbosa ; 6363
    Ambient radioactivity and atmospheric electricity are inextricably linked phenomena. In order to assess the role of ambient radioactivity in the local variability of the atmospheric electric field at an urban site, simultaneous measurements of radon concentration, gamma radiation, and atmospheric electric field are carried out in the city of Porto, Portugal. Both radon and gamma radiation display an average daily cycle peaking before sunrise, but with considerable variability from day to day, particularly in amplitude. The atmospheric electric field displays a daily cycle with a minimum at dawn and maximum in the early afternoon, as well as a secondary peak in the early morning. The temporal variation of the daily patterns is analysed by means of an empirical orthogonal function analysis, and related to local meteorological parameters. The variability of the local atmospheric electric field is mainly determined by aerosol transport and accumulation close to the surface associated with local meteorological conditions and atmospheric stability rather than by conductivity variations associated with ambient radioactivity. © 2020 Elsevier Ltd
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    The ANTAREX approach to autotuning and adaptivity for energy efficient HPC systems
    ( 2016) Silvano,C ; Agosta,G ; Cherubin,S ; Gadioli,D ; Palermo,G ; Bartolini,A ; Benini,L ; Martinovic,J ; Palkovic,M ; Slaninová,K ; João Bispo ; João Paiva Cardoso ; Rui Maranhão ; Pinto,P ; Cavazzoni,C ; Sanna,N ; Beccari,AR ; Cmar,R ; Rohou,E
    The ANTAREX 1 project aims at expressing the application selfadaptivity through a Domain Specific Language (DSL) and to runtime manage and autotune applications for green and heterogeneous High Performance Computing (HPC) systems up to Exascale. The DSL approach allows the definition of energy-efficiency, performance, and adaptivity strategies as well as their enforcement at runtime through application autotuning and resource and power management. We show through a mini-App extracted from one of the project application use cases some initial exploration of application precision tuning by means enabled by the DSL. © 2016 Copyright held by the owner/author(s).
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    Applying an Extended Kernel Density 4-Step Floating Catchment Area Method to Identify Priority Districts to Promote New Publicly Financed Supply of Gastroenterology Exams
    ( 2017) Polzin,P ; José Luís Borges ; António Coelho
    In continental Portugal, the publicly financed supply of gastroenterology exams was limited since the end of the last century, restricted to a fixed set of private providers that was hired by the Portuguese state. This way of contracting created market entry barriers and is inefficient, since prices are administratively set. Besides, it produced access inequalities, because of the way that the supply was geographically distributed. This paper applies the Extended Kernel Density 4-Step Floating Catchment Area (EKD4SFCA) method to identify priority districts for the promotion of new supply by the state, in order to choose the appropriate way of contracting new private supply, as determined by current law, and to reduce access inequalities. The applied method enables the identification of the Portuguese regions with strong competition between health care providers and where patients’ access to publicly financed gastroenterology exams is relatively low. In these regions, the state should promote public bids to stimulate new supply, exploring thereby the potential for setting lower prices and reducing access inequalities.
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    An Approach for Automated Scenario-based Testing of Distributed and Heterogeneous Systems
    ( 2015) Bruno Carvalhido Lima ; João Pascoal Faria
    The growing dependence of our society on increasingly complex software systems, makes software testing ever more important and challenging. In many domains, such as healthcare and transportation, several independent systems, forming a heterogeneous and distributed system of systems, are involved in the provisioning of endto- end services to users. However, existing testing techniques, namely in the model-based testing field, provide little tool support for properly testing such systems. Hence, in this paper, we propose an approach and a toolset architecture for automating the testing of end-to-end services in distributed and heterogeneous systems. The tester interacts with a visual modeling frontend to describe key behavioral scenarios, invoke test generation and execution, and visualize test results and coverage information back in the model. The visual modeling notation is converted to a formal notation amenable for runtime interpretation in the backend. A distributed test monitoring and control infrastructure is responsible for interacting with the components of the system under test, as test driver, monitor and stub. At the core of the toolset, a test execution engine coordinates test execution and checks the conformance of the observed execution trace with the expectations derived from the visual model. A real world example from the Ambient Assisted Living domain is presented to illustrate the approach.
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    An Approach to Relevancy Detection: contributions to the automatic detection of relevance in social networks
    ( 2016) Álvaro Figueira ; Miguel Oliveira Sandim ; Paula Teixeira Fortuna
    In this paper we analyze the information propagated through three social networks. Previous research has shown that most of the messages posted on Twitter are truthful, but the service is also used to spread misinformation and false rumors. In this paper we focus on the search for automatic methods for assessing the relevance of a given set of posts. We first retrieved from social networks, posts related to trending topics. Then, we categorize them as being news or as being conversational messages, and assessed their credibility. From the gained insights we used features to automatically assess whether a post is news or chat, and to level its credibility. Based on these two experiments we built an automatic classifier. The results from assessing our classifier, which categorizes posts as being relevant or not, lead to a high balanced accuracy, with the potential to be further enhanced.
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    AppVox: An Application to Assist People with Speech Impairments in Their Speech Therapy Sessions
    ( 2017) Gonçalves,Cirano ; Rocha,Tania ; Arsénio Reis ; João Barroso
    In this study an application to assist people with speech impairments in their speech therapy sessions is presented. AppVox simulates a vocalizer (audio stimulus feature) that can be used to train speech by repeating different words. In this paper, we aim at presenting the application as an assistive technology option and assess if this is a usable option for digital interaction for children with speech impairment. To assess the application we present a case study in which the participants were asked to perform tasks using the AppVox application. The results showed that this group of participants attained a good performance when interacting with the application. © Springer International Publishing AG 2017.