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Publications

Publications by HumanISE

2014

Changes in extreme sea-levels in the Baltic Sea

Authors
Ribeiro, A; Barbosa, SM; Scotto, MG; Donner, RV;

Publication
TELLUS SERIES A-DYNAMIC METEOROLOGY AND OCEANOGRAPHY

Abstract
In a climate change context, changes in extreme sea-levels rather than changes in the mean are of particular interest from the coastal protection point of view. In this work, extreme sea-levels in the Baltic Sea are investigated based on daily tide gauge records for the period 1916-2005 using the annual block maxima approach. Extreme events are analysed based on the generalised extreme value distribution considering both stationary and time-varying models. The likelihood ratio test is applied to select between stationary and non-stationary models for the maxima and return values are estimated from the final model. As an independent and complementary approach, quantile regression is applied for comparison with the results from the extreme value approach. The rates of change in the uppermost quantiles are in general consistent and most pronounced for the northernmost stations.

2014

Accuracy Assessment of the Integration of GNSS and a MEMS IMU in a Terrestrial Platform

Authors
Madeira, S; Yan, WL; Bastos, L; Goncalves, JA;

Publication
SENSORS

Abstract
MEMS Inertial Measurement Units are available at low cost and can replace expensive units in mobile mapping platforms which need direct georeferencing. This is done through the integration with GNSS measurements in order to achieve a continuous positioning solution and to obtain orientation angles. This paper presents the results of the assessment of the accuracy of a system that integrates GNSS and a MEMS IMU in a terrestrial platform. We describe the methodology used and the tests realized where the accuracy of the positions and orientation parameters were assessed using an independent photogrammetric technique employing cameras that integrate the mobile mapping system developed by the authors. Results for the accuracy of attitude angles and coordinates show that accuracies better than a decimeter in positions, and under a degree in angles, can be achieved even considering that the terrestrial platform is operating in less than favorable environments.

2014

Framework for Applications of Support to the Activities of Integrated Care

Authors
Pavao, J; Carvalho, S; Queiros, A; Rocha, NP;

Publication
PROCEEDINGS OF THE 2014 9TH IBERIAN CONFERENCE ON INFORMATION SYSTEMS AND TECHNOLOGIES (CISTI 2014)

Abstract
The population ageing requires new approaches to optimize the available resources. In particular, it is urgent to evolve for an effective care integration, which requires toconsider aspects of people's daily lives that impact on their health conditions. Therefore, the information interoperability has an increasing importance, not only the interoperability of health related information, but also social context related information. In this paper, we propose a framework for the creation of applications for information recording, based on a generic and flexible information model, for the provision of integrated care.

2014

Evaluation of an Integrated Mobile Payment, Ticketing and Couponing Solution Based on NFC

Authors
Ferreira, MC; e Cunha, JF; Jose, R; Rodrigues, H; Monteiro, MP; Ribeiro, C;

Publication
NEW PERSPECTIVES IN INFORMATION SYSTEMS AND TECHNOLOGIES, VOL 2

Abstract
The emergence of Near Field Communication technology added more functionality to mobile phones. People can now access to new mobile services such as payment, ticketing, couponing, and control access to cars, homes and hotels. Although these services seem to complement each other, most studies have focused on the development and evaluation of each mobile service individually. In this paper, we propose an integrated mobile service solution payment, ticketing and couponing - based on NFC. This solution was evaluated in a two-phase user study, which was run in real environment. Participants have largely appreciated the integration of tickets and discount coupons on the payment process. However, despite the integration of services being one of the strongest points of the solution, it also revealed to be one of the main challenges that any payment systems may have to address. Findings suggest that adding additional services to a solution may become very complex from a cognitive perspective.

2014

MobiPag: Integrated Mobile Payment, Ticketing and Couponing Solution Based on NFC

Authors
Rodrigues, H; Jose, R; Coelho, A; Melro, A; Ferreira, MC; Falcao e Cunha, JFE; Monteiro, MP; Ribeiro, C;

Publication
SENSORS

Abstract
Mobile payments still remain essentially an emerging technology, seeking to fill the gap between the envisioned potential and widespread usage. In this paper, we present an integrated mobile service solution based on the near field communication (NFC) protocol that was developed under a research project called MobiPag. The most distinctive characteristic of Mobipag is its open architectural model that allows multiple partners to become part of the payment value-chain and create solutions that complement payments in many unexpected ways. We describe the Mobipag architecture and how it has been used to support a mobile payment trial. We identify a set of design lessons resulting from usage experiences associated with real-world payment situations with NFC-enabled mobile phones. Based on results from this trial, we identify a number of challenges and guidelines that may help to shape future versions of NFC-based payment systems. In particular, we highlight key challenges for the initial phases of payment deployments, where it is essential to focus on scenarios that can be identified as more feasible for early adoption. We also have identified a fundamental trade-off between the flexibility supported by the Mobipag solution and the respective implications for the payment process, particularly on the users' mental model.

2014

Effects of experience on the dimensions of intensity, direction and frequency of the competitive anxiety and self-confidence: A study in athletes of individual and team sports [Efeitos da experiência nas dimensões de intensidade, direção e frequência da ansiedade e autoconfiança competitiva: Um estudo em atletas de desportos individuais e coletivos]

Authors
Fernandes, MG; Nunes, SAN; Raposo, JV; Fernandes, HM;

Publication
Motricidade

Abstract
The present study had the following objectives: i) to examine the inter-scale correlations between the three dimensions of responses (intensity, direction and frequency) of the CSAI-2R and its relationship with competitive experience, and ii) evaluate the effect of competitive experience anxiety (cognitive and somatic) and self-confidence in the total sample and for different types of modalities (individual vs. team). The sample consisted of 267 athletes (196 male and 71 female), of different sports, aged be-tween 18 and 40 years (M = 24.30, SD = 5.62). Athletes completed the Brazilian version of the CSAI-2, which included the addition of the dimensions of direction and frequency response. Spearman test and Manova were used for the data analysis. Overall, it was found that the competitive experience has a high multivariate and significant effect on the dimensions of competitive anxiety. Both individual and team athletes with low competitive experience showed a trend to report lower levels of self-confidence intensity, compared to counterparts with high competitive experience. These results were discussed in view of the theoretic framework and practical implications planning Sport Psychology intervention programs in local athletes with different backgrounds. Copyright © 2014 Fundação Técnica e Científica do Desporto.

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