Percorrer por data de Publicação, começado por "2022-06-17"
A mostrar 1 - 5 de 5
Resultados por página
Opções de ordenação
- Paixão pelo trabalho: estudo de antecedentes individuais e consequentes do trabalhoPublication . Carneiro, Filipe António Aguilar Carneiro; Santos, JoanaA paixão pelo trabalho torna-se característica central da identidade do indivíduo e serve para o definir como pessoa (Vallerand et al., 2003). Os indivíduos apaixonados pelo trabalho, consideram-no parte vital do seu autoconceito e investem significativamente, tempo e energia na realização das suas tarefas. O presente estudo tem como principal objetivo compreender a formação da paixão harmoniosa pelo trabalho, e conferir o contributo explicativo que esta tem sobre resultados organizacionais positivos, particularmente o empenhamento afetivo e a satisfação profissional. Com essa finalidade, e tendo por base o modelo Employee Work Passion Appraisal (Zigarmi, Nimon, Houson, Witt, & Diehl, 2009) e na teoria de autodeterminação (Deci & Ryan, 2000), foram examinadas as associações estatísticas entre a personalidade proativa (como antecedente individual), a motivação intrínseca (como avaliação cognitiva), e como esses construtos se relacionam com a perceção de paixão harmoniosa (como um estado de bem-estar no trabalho) e consequentes organizacionais positivos (empenhamento afetivo e satisfação profissional). Numa amostra constituída por 315 trabalhadores foi possível apurar que a personalidade proativa, a motivação intrínseca e a paixão harmoniosa pelo trabalho, explicam 50,9% do empenhamento afetivo e 42,8% da satisfação profissional. Os resultados corroboram as hipóteses formuladas, sendo evidente o contributo positivo da paixão harmoniosa sobre os resultados organizacionais.
- Covid-19 and perceived travel risks: the development of a risk evaluation index using Delphi-based and MCDA applicationsPublication . Plank, Pia Antoinette; Gomes, Luis; Ferreira, Diogo Filipe da CunhaThis work addresses the problem of changing travel risk perceptions of travellers following the aftermath of the COVID-19 pandemic. Following the unprecedented and global health crisis of COVID-19, without a doubt, there has been a tremendous impact on global tourism for two reasons; 1) the imposed travel restrictions discouraging people to travel; and 2) the increased anxieties of travellers in terms of responding to the new travel landscape. The main goal of this study was to identify and weight the important travel risks that are emerging and to create a risk evaluation index in which destinations and strategic interventions’ performance can be measured. The secondary objectives to this study include to contribute to a better understanding of risk perceptions held by travellers in a pandemic situation and apply a multimethodology to the concept of tourist perceived risk that has, to the knowledge of the author, never been carried out before. Empiric investigation analysed a sample of South African travellers’ travel risk perceptions through the use of the Delphi Technique and Multicriteria Decision Analysis (MCDA). The results equip the tourism industry, practitioners and managers with the information needed to evaluate tourist risk perception following a global pandemic, but can also be further applied to other contexts. This allows for the implementation of response strategies to encourage travel and contribute to the recuperation of the tourism sector following the COVID-19 pandemic. The findings from the Delphi-based survey indicate that tourist perceived risks are multidimensional, with first-level dimensions being categories of Financial, Performance, Planning and Regulation risks, which can be further sub-divided into categories that include additional expenses, exchange rates, refunds-related, destination performance, transportation performance, researching-related, psychological, lockdowns, testing-related and comfort-related criteria. MCDA applications, using MACBETH approaches, found that the risk criteria that are considered to be of highest importance to overall travel risk perception include additional expenses, exchange rates and refunds-related factors – with weightings of 20.60, 16.80 and 12.47 respectively. The risk evaluation index that was constructed as a result of this study was applied to five tourist destinations to evaluate their performance with regards to the perceived travel risks identified. Results suggested that the United Kingdom performs better (i.e., is ‘safer’) in terms of this particular South African traveller sample’s risk perceptions. This kind of research contributes to the literature in two ways: methodologically, by applying MCDA and Delphi techniques to the context of tourist risk perceptions, and by the development of a risk evaluation index.
- The presence of Algarve wine producers on facebook between pre-covid-19 and covid-19 periodsPublication . Almeida, Carlos Miguel Ribeiro de; Afonso, Carlos M.; Serra, Manuel DionísioSocial media may be used to build virtual communities around brands, allowing consumers to learn more about them and interact with the material they provide. In this sense, it serves as a helpful communication medium for obtaining and disseminating information about wine as a social commodity, affecting wine consumers' purchasing decisions. The number of Algarve wine producers has increased in recent years, indicating the sector's progress. Wine is one of the most popular internet products, and social media sites like Facebook are ideal for promoting it. With that, the objective of this study is to analyze the evolution of the usage of Algarve wine producers on their Facebook pages between February 2019 and the end of January 2022, corresponding to a pre-Covid-19 period and the Covid-19 period. To do this, the model developed by by Huertas, Setó-Pàmies and Míguez-González (2015) was used, where the variables of “Contents”, “Interactivity”, “Visibility” are considered, with an additional variable for “Profitability”, referenced by Rodríguez-Fernández, Sánchez-Amboage and Martínez-Fernández (2017b). The analysis was made through a series of performance indicators collected using the online data collection tool Fanpage Karma. Results have shown a greater effort from some of these pages to produce content more often, specially at the beginning of the Covid-19 pandemic period, while some are still struggling to explore this medium, but overall there is room to be more active and productive in social media networks since these pages frequency of publication is low. The Ad-Values and Page Performance Indexes for most pages have a decreasing tendency throughout the analyzed periods, with few pages showing increasing results for these indicators. In need to adjust their communication strategies, the most active pages grew a lot in numbers of fans, reactions, and other interactions, producing quality content that engaged consumers. The less explored pages show smaller evolution, concluding that there is still potential in Facebook as a platform for the Algarve wine sector.
- A comparison of olfactory sensitivity in seawater- and freshwater-adapted bass, dicentrarchus iabraxPublication . Velez, Zélia; Hubbard, Peter; Guerreiro, Pedro MiguelFish rely heavily on olfaction for many aspects of their lives including foraging, defense, migration, and reproduction. Olfactory receptor neurons in the olfactory epithelium are in direct contact with the water, and are, therefore, exposed to changes in water chemistry. The European seabass, Dicentrarchus labrax, uses estuaries as feeding grounds and migrates between seawater and brackish water; but some can be found in 100% freshwater. However, little is known about how the olfactory system adjusts to waters of such different ionic composition and whether this affects its function and ability to discriminate between odorants. The aim of this study was, therefore, to compare olfactory sensitivity in seabass adapted to either seawater (SW) or freshwater (5 ppt; FW), to odorants conveyed at different salinities, using multi-unit recording from the olfactory nerve. In SW-adapted fish, olfactory sensitivity to amino acids (AA) was consistently higher when AA were presented in seawater (SW-AA) than when presented in freshwater (FW-AA), whereas in FW-adapted fish, olfactory sensitivity to FW-AA was either equal or slightly lower to SW-AA. SW-adapted fish responded to decreases in external [Ca2+] and to increases in external [Na+ ]. FWadapted fish responded to increases of both ions. In SW-adapted fish, Ca2+-free artificial seawater (ASW) completely inhibited olfactory responses to amino acids, whereas Na+ -free ASW had no effect. However, in FW-adapted fish, lack of either ion in the water had no effect. Taken together, these results suggest that, as a primarily marine species, the olfactory system of the seabass is more sensitive in seawater; however, it can still function in freshwater, albeit with reduced sensitivity. Furthermore, in seawater, the olfactory transduction process is likely mediated by influx of external Ca2+, but not Na+ . In FW-adapted fish, the transduction process relies on neither external Ca2+ nor Na+ , suggesting that the process of hyperosmoregulatory ability to adjust to life in ion-poor water. Further work is needed to clarify how changes in salinity affect olfactory sensitivity, and the mechanisms by which euryhaline species are able to adapt to such changes when moving between media of different ionic composition and variable pH.
- Restocking trials with hatchery-reared dusky groupers in a marine protected area of the southwestern portuguese coastPublication . Silva, Ana Filipa; Horta e Costa, Barbara; Costa, José Lino; Pereira, Esmeralda; Marques, João Pedro; Castro, João J.; Lino, Pedro G.; Candeias-Mendes, Ana; Pousão-Ferreira, Pedro; Sousa, Inês; Bentes, Luis; Gonçalves, Jorge Manuel Santos; Almeida, Pedro Raposo de; Quintella, Bernardo RuivoMarine Protected Areas (MPAs) have played an important role in the protection of endangered species such as the dusky grouper (Epinephelus marginatus), and the no-take areas have been particularly crucial for this purpose. Yet, despite the establishment of no-take areas and the legislation banning dusky groupers’ catches since 2011 in a southwestern Portuguese MPA (SACVMP—‘Sudoeste Alentejano’ and ‘Costa Vicentina’ Marine Park), there is still no evidence of this population’s recovery. In the face of this, the present work aimed to monitor the experimental hatchery-reared adult dusky groupers’ restocking of two no-take areas of SACVMP with acoustic biotelemetry. In 2019 and 2021, thirty groupers tagged with acoustic transmitters were released in two no-take areas, and the site attachment and their movements were assessed. None of the tagged fish set residency in either of the releasing areas, mostly leaving there at dusk and night. A rarely reported event for this species was also observed, as some individuals moved for more than a hundred kilometers along the Portuguese coast. At least some of those ranging movements were performed close to the rocky shore, which may point out the importance of coastal MPAs in promoting the connectivity of fish species associated with rocky reef habitats. Future studies must focus on the conditions that promote the site attachment and the site fidelity of released hatchery-reared dusky groupers so that large-scale restocking programs can be successfully implemented in MPAs with appropriate habitats.