Browsing by Issue Date, starting with "2023-06-26"
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- Search space reduction for localization and tracking of an acoustic sourcePublication . Rodríguez, Orlando; Zhang, Lilun; Cheng, XinghuaExperimental data from the SACLANTCEN 1993 Mediterranean Experiment are reviewed to assess the reduction of the search space for the localization and tracking of an acoustic source in a three-dimensional environment. Key to this goal is the availability of an initial estimate of source range and depth (called the 2D initial guess); an ambiguous estimate of source bearing can be obtained from the 2D initial guess through Environmental Signal Processing, and the ambiguity can be removed by searching for the source only in the range/bearing regions where bearing estimates are higher. This search provides a new estimate of source range and a single bearing, which together with the estimate for source depth constitute the center of the reduced search space for source localization and tracking. The suggested approach is tested on experimental data from the SACLANTCEN experiment considering different frequencies, as well as a stationary and a moving source.
- Exploring emotions in tourists´ experiences based on cognitive appraisal theory insights from Algarve, PortugalPublication . Martins, Rafaela Sofia Cabrita Catarina; Guerreiro, Manuela; Sequeira, BernardeteCurrent literature on emotions in the tourism and marketing fields focuses on assessing how to identify, understand, design methods to measure and define emotions within the post-consumption experience. Recent tourism studies have understood the importance of emotions in designing better touristic experiences. They have succeeded in identifying ways to discriminate the best methods to measure emotions in broader senses but failing to identify specific and discrete emotions and their existent reasons while directly involving the individual to understand the underlying emotional reasons within Tourism Destinations. This study employs the S-O-R paradigm to comprehend tourists’ emotions in a tourism experience context and the Cognitive appraisal approach since emotions are viewed as mental states arising from subjective evaluations. In doing so, this research aims, specifically, to (1) identify the emotions spontaneously elicited by tourists about their experiences in the Algarve destination; (2) explore possible linkages between sensory stimuli and emotions, and (3) explore possible linkages between emotions and behaviour regarding destination recommendations. A sample of tourists sectioned into two touristic seasons (high and low) was interviewed within the project TurExperience (SAICT-ALG/39588/2018). Based on Del-Bosque and San Martín (2008) and Richins (1997), 16 emotional states were regressed alongside drivers and behavioural outcomes identified with significant co-occurrences, suggesting an association between the elicited emotions and sensory stimuli, namely regarding the vision, taste, and smelling senses. And secondly, the elicited emotions and loyalty behaviours, namely regarding tourists’ loyalty behaviours on destination recommendation. Adopting a qualitative approach, by using semi-structured interviews with tourists visiting the Algarve, an illustrious and reputable destination in the south of Portugal, findings suggest that emotional states vary under the influence of certain circumstances, namely when people experience emotional states like Happiness, tranquility, calmness, sadness, discomfort, Saudade or even nostalgia. These outcomes have huge practical implications on the tourism experience design, destination marketing, positioning, and branding. As well as for theoretical implications providing further understanding on emotions spontaneous elicitation and underlying emotional reasons in the context of a tourism destination. This paper is financed by National Funds provided by FCT- Foundation for Science and Technology through project UIDB/04020/2020.