Repositório Colecção: Comunicações a ConferênciasComunicações a Conferênciashttps://hdl.handle.net/1822/9882024-03-29T13:13:57Z2024-03-29T13:13:57ZMathematica tools for coquaternionsFalcão, M. I.Miranda, FernandoSeverino, RicardoSoares, M. J.https://hdl.handle.net/1822/828422023-02-22T16:57:08Z2023-02-22T16:57:07ZTítulo: Mathematica tools for coquaternions
Autor: Falcão, M. I.; Miranda, Fernando; Severino, Ricardo; Soares, M. J.
Resumo: Coquaternions form a four dimensional real algebra generalizing complex numbers and were introduced by James Cockle at about the same time that Hamilton discovered the famous algebra of quaternions. Although not as popular as quaternions, in recent years one can observe an emerging interest among mathematicians and physicists on the study of these numbers. In this work we revisit a Mathematica package for implementing the algebra of coquaternions - Coquaternions - and discuss a set of Mathematica functions - CoqPolynomi al - to deal with coquaternionic polynomials. These two sets of functions provide the basic tools necessary for manipulating coquaternions and unilateral coquaternionic polynomials, reflecting, in its present form, the recent interests of the authors in the area.
<b>Tipo</b>: conferencePaper2023-02-22T16:57:07ZTracking participants’ behaviour when performing linguistic tasksLourenço-Gomes, Maria do CarmoCastro, CecíliaAmorim, Ana PaulaBezerra, Gitanna Britohttps://hdl.handle.net/1822/802102022-10-19T10:12:41Z2022-10-18T09:11:52ZTítulo: Tracking participants’ behaviour when performing linguistic tasks
Autor: Lourenço-Gomes, Maria do Carmo; Castro, Cecília; Amorim, Ana Paula; Bezerra, Gitanna Brito
Resumo: This study aims to identify behaviours that accompany the psychological processes involved in reading sentences and deciding on a response. The response times of different participants' actions while they completed a questionnaire were measured. We focus on two datasets from the sample: cases in which participants changed their responses and cases in which they did not. The results show that changing the response has an impact on response times. More importantly, this impact occurs not only during the decision-making process but also throughout the task. This research may contribute to a better understanding of response time data in off-line techniques and to fine-tuning experimental designs.
<b>Tipo</b>: conferencePaper2022-10-18T09:11:52ZAlignment between the Urban Water Sector Mission and the SDGs: the management model effect in PortugalArezes, Luís Diogo AraújoCrispim, José António AlmeidaPinto, LígiaRamísio, Paulo J.https://hdl.handle.net/1822/755122022-01-14T12:35:14ZTítulo: Alignment between the Urban Water Sector Mission and the SDGs: the management model effect in Portugal
Autor: Arezes, Luís Diogo Araújo; Crispim, José António Almeida; Pinto, Lígia; Ramísio, Paulo J.
Resumo: The 2030 Sustainable Development Goals (SDGs) reinforce the central role of organizations in the implementation of solutions that promote sustainability. Similarly, there is a direct link between society?s well-being and the management of water resources. Thus, water companies have a central role in defining targets and programs focused on achieving these goals. This research aims to analyze the incorporation of the SDGs in the Portuguese water sector and evaluate whether the incorporation varies with the management model of each organization. Likewise, it is also intended to compare these results with those observed at international level. By examining the existence of a management model effect in the integration of the SDGs, the paper contributes to the formulation of adoption policies.
<b>Tipo</b>: conferencePaperEntry deregulation, firm organization, and wage inequalityFerreira, PriscilaFernandes, Ana PaulaCooke, Dudleyhttps://hdl.handle.net/1822/734542021-09-29T12:05:29ZTítulo: Entry deregulation, firm organization, and wage inequality
Autor: Ferreira, Priscila; Fernandes, Ana Paula; Cooke, Dudley
Resumo: This paper identifies a causal link between changes in product market competition, firm reorganization and within-firm wage inequality. We exploit a unique episode of comprehensive firm entry deregulation as a quasi-natural experiment and use exceptionally detailed linked employer-employee data for the universe of private sector firms and workers in Portugal. Following deregulation affected firms flatten their hierarchies: the number of layers is reduced and managers span of control increased. Dropping a hierarchy layer is accompanied by a significant reduction in wage inequality within the rm, by 8% for the average pay ratio between the top and the bottom layer and 4.4% for the 90-50 percentile wage ratio, showing that there are real changes arising from firm reorganization. Overall wage dispersion, measured by the standard deviation of hourly pay, is also reduced. We discuss mechanisms and interpretations for these changes.
<b>Tipo</b>: panelPresentationThe impact of the COVID-19 crisis on labour markets around the world: The case of PortugalFerreira, Priscilahttps://hdl.handle.net/1822/731182021-05-30T22:24:11Z2021-05-29T21:37:59ZTítulo: The impact of the COVID-19 crisis on labour markets around the world: The case of Portugal
Autor: Ferreira, Priscila
Resumo: ZA-ILO webinar on “Taking stock of the COVID-19 crisis: The impact on the labour market and how countries have responded” (28 may 2021)
<b>Tipo</b>: panelPresentation2021-05-29T21:37:59Z