Repositório Científico do Instituto Politécnico de Santarém
Entradas recentes
Avaliar/sinalizar precocemente
Publication . Gonçalves, Adriana C.N.; Ferreira, Catarina S.V.C.; Mendes, Nélia C.J.G.M.; Oliveira, Maria C.F.; Branco, Otilia F.; São João, Ricardo
A Perturbação do Espectro do Autismo (PEA) é uma condição do neurodesenvolvimento caracterizada por dificuldades na comunicação, interação social e pela presença de comportamentos repetitivos e interesses restritos. Estudos demonstram que a intervenção precoce favorece o desenvolvimento das competências sociais, cognitivas, emocionais e comunicativas, contribuindo para uma maior autonomia e inclusão da criança nos diferentes contextos de vida. O diagnóstico precoce possibilita às famílias uma melhor compreensão da condição e das necessidades específicas da criança. A Consulta do Autismo da ULS Médio Tejo assenta precisamente nestes pilares: avaliação e diagnóstico precoce, intervenção especializada, acompanhamento contínuo e capacitação das famílias, através de uma resposta integrada, humanizada e baseada na evidência científica.
Beyond Mean-Variance:A Behavioral Multicriteria Framework for Portfolio Allocation
Publication . Santos, Paulo Araújo; Leoneti, Alexandre Bevilacqua; São João, Ricardo;
This paper evaluates a portfolio-allocation framework grounded in the Multicriteria Prospect Theory Approach (MPT-A) and compares its out-of-sample performance with that of a constrained return-maximization benchmark, the Markowitz model. Rather than replacing variance as a risk proxy, the proposed framework reorganizes portfolio allocation through a behavioral multicriteria decision rule that incorporates investor-specific preferences over return and risk. Portfolios are constructed for conservative, moderate, and aggressive investor profiles and evaluated using realized out-of-sample returns, risk, diversification patterns, and Sharpe ratios. The benchmark portfolio is computed under realistic lower and upper bounds on asset allocations in order to reflect implementable investment constraints. The results indicate that the MPT-A framework produces portfolios with a coherent progression in risk across investor profiles while maintaining comparatively diversified allocations.
Forecast adjustment in multicriteria analysis using parameterisable functions
Publication . Sao João, Ricardo; Leoneti, Alexandre; Santos, Paulo Araújo
MCDM ranking methods can be evaluated by their ability to reproduce initial preferences; TODIMAdp’s additional parameters increase modelling flexibility and predictive capacity;. The results suggest that further exploration of parameter combinations may strengthen TODIM’s descriptive and forecasting performance in applied multicriteria
decision contexts.
Forecast Adjustment in Multicriteria Analysis Using Parameterisable Functions
Publication . São João, Ricardo; Leoneti, Alexandre; Santos, Paulo
This investigation proposes improvements to the TODIM multicriteria decision-support method. A new parametrisation of the TODIM phi function is introduced using techniques common in binary-response statistical models, aiming to increase flexibility and better reflect real decision-maker behaviour. Empirical validation uses preference and weighting data from 20 higher-education students (Leoneti, 2016). Results from the original TODIM are compared with an adapted version (TODIMAdp). Spearman correlation with participants’ initial rankings shows that TODIMAdp performs better on average (0.29 vs. 0.20) and correctly predicts the top-ranked alternative in 50% of cases, compared with 37% for the original method. Assuming MCDM ranking methods can be evaluated by their ability to reproduce initial preferences, the study finds that TODIMAdp’s additional parameters increase modelling flexibility and predictive capacity. The results suggest that further exploration of parameter combinations may strengthen TODIM’s descriptive and forecasting performance in applied multicriteria decision contexts.
Mixed methods in promoting contraceptive decision-making after voluntary-termination-of-pregnancy
Publication . Palma, Sara; São João, Ricardo; Antunes, Mónica; Presado, Helena
Aim: Contraception aims to protect women from unplanned and unwanted pregnancies. The number of voluntary-terminations-of-pregnancy is an indicator that highlights issues such as difficulty accessing health services and women's lack of knowledge about contraceptives. These factors complicate choosing, adhering to, continuing, and achieving satisfaction with a contraceptive method. Mixed studies have gained prominence in health research with significant implications for care quality, particularly in nursing.
Objectives: Analyze the applicability of mixed-method research in promoting contraceptive decision-making for women undergoing voluntary termination of pregnancy.
Methods: A theoretical-reflective essay based on a theoretical framework guiding reflections on mixed research. This reflection explores the basic theoretical constructs of mixed methods and their applicability in promoting contraceptive decision-making for women in the process of voluntary pregnancy termination.
Results: Categories emerging from qualitative study participants' statements were consolidated with quantitative data from women's responses to questionnaires. Integrating these two data types facilitated a robust analysis, discussion, and inference of results, leading to proposals for future interventions.
Conclusions: Due to the advantages of the multimethod approach, we aim to disseminate its use in health research, demonstrating that combining quantitative and qualitative approaches provides greater insights into research phenomena and problems compared to using each method in isolation. This ultimately enhances care quality and contributes to scientific knowledge development.