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Publicações

2017

INFLUENCE OF SENSORY STIMULI ON BRAND EXPERIENCE, BRAND EQUITY AND PURCHASE INTENTION

Autores
Moreira, AC; Fortes, N; Santiago, R;

Publicação
JOURNAL OF BUSINESS ECONOMICS AND MANAGEMENT

Abstract
Sensory stimulation is used by various brands to induce desired behaviours among their customers. Although its effectiveness is recognised in business contexts, little research has been conducted on sensory marketing. In order to contribute to filling this gap, this study sought to build a model that explains how sensory stimulation influences intentions to purchase a brand. Brand experience and brand equity were expected to mediate this relationship. The empirical validation of the model was conducted by carrying out an online survey with a convenience sample of 302 customers of a brand of the catering industry. The data collected were processed using PLS-SEM methodology. The results reveal that sensory stimulation positively influences brand experience and brand equity, which, in turn, have a positive impact on intentions to purchase the brand in question. The relevant contributions that emerged from this study include not only bridging the aforementioned gap in the literature but also offering significant managerial implications.

2017

Designing Auditability in Social Networks to Prevent the Spread of False Information

Autores
Pinheiro, A; Cappelli, C; Maciel, C;

Publicação
IEEE Latin America Transactions

Abstract
The spread of rumors, hoaxes and misinformation in online social networks has made urgent the development of tools to help users to verify the credibility of information. Although some developers have already come with solutions, some aspects of human computer interaction in the creation of these tools are still disregarded. This article describes guidelines for development of features to promote auditability of information in social networks. The guidelines were grouped in a guide created from a derivation of a catalog based on information transparency and shows orientations for social network developers on how to avoid the proliferation of false information. © 2003-2012 IEEE.

2017

Integrated versus hierarchical approach to aggregate production planning and master production scheduling

Autores
Vogel, T; Almada Lobo, B; Almeder, C;

Publicação
OR SPECTRUM

Abstract
The hierarchical planning concept is commonly used for production planning. Dividing the planning process into subprocesses which are solved separately in the order of the hierarchy decreases the complexity and fits the common organizational structure. However, interaction between planning levels is crucial to avoid infeasibility and inconsistency of plans. Furthermore, optimizing subproblems often leads to suboptimal results for the overall problem. The alternative, a monolithic model integrating all planning levels, has been rejected in the literature because of several reasons. In this study, we show that some of them do not hold for an integrated production planning model combining the planning tasks usually attributed to aggregate production planning and master production scheduling. Therefore, we develop a hierarchical and an integrated model considering both levels, aggregate production planning and master production scheduling. Computational tests show that it is possible to solve the integrated model and that it outperforms the hierarchical approach for all instances. Moreover, an indication is given why and when integration is beneficial.

2017

Patterns of synchrony for feed-forward and auto-regulation feed-forward neural networks

Autores
Aguiar, MAD; Dias, APS; Ferreira, F;

Publicação
CHAOS

Abstract
We consider feed-forward and auto-regulation feed-forward neural (weighted) coupled cell networks. In feed-forward neural networks, cells are arranged in layers such that the cells of the first layer have empty input set and cells of each other layer receive only inputs from cells of the previous layer. An auto-regulation feed-forward neural coupled cell network is a feed-forward neural network where additionally some cells of the first layer have auto-regulation, that is, they have a self-loop. Given a network structure, a robust pattern of synchrony is a space defined in terms of equalities of cell coordinates that is flow-invariant for any coupled cell system (with additive input structure) associated with the network. In this paper, we describe the robust patterns of synchrony for feed-forward and auto-regulation feed-forward neural networks. Regarding feed-forward neural networks, we show that only cells in the same layer can synchronize. On the other hand, in the presence of auto-regulation, we prove that cells in different layers can synchronize in a robust way and we give a characterization of the possible patterns of synchrony that can occur for auto-regulation feed-forward neural networks. Published by AIP Publishing.

2017

PSYCHOLOGICAL WELL-BEING AND SELF-ESTEEM AMONG UNIVERSITY STUDENTS

Autores
Pereira, HP; Lopes, DG; Goncalves, MC; Vasconcelos Raposo, JJ;

Publicação
REVISTA IBEROAMERICANA DE PSICOLOGIA DEL EJERCICIO Y EL DEPORTE

Abstract
This study aims to compare students of Psychology and Sport about the Psychological Wellbeing (PWB) and Self-Esteem. A total of 126 subjects (42.9% male) of Psychology and Sport courses (51.6% of Sport) participated in this study. The results suggest that Self-Esteem variable is not related to the PWB, since the association between these two variables is negative, although not significant (r = -.090). The results also show that there are no significant differences between students of Sport and Psychology in the levels of BEP and its dimensions. Nevertheless, it is clear that when put together, the knowledge in the areas of Psychology and Sport, are able to increase the PWB. In conclusion, the knowledge in the mental health area and physical activity establishing itself areas to invest to promote overall mental health levels.

2017

SMEs INNOVATION CAPABILITIES AND EXPORT PERFORMANCE: AN ENTREPRENEURIAL ORIENTATION VIEW

Autores
Ribau, CP; Moreira, AC; Raposo, M;

Publicação
JOURNAL OF BUSINESS ECONOMICS AND MANAGEMENT

Abstract
Although there are several studies analysing how innovation capabilities influence export performance, this study aims to present the impact of a set of internal innovation capabilities on export performance of small and medium-sized firms (SMEs), with the mediating role of entrepreneurial orientation contingent upon the proactive or reactive behaviour of the firms to external stimuli. The study involves the analysis of 147 questionnaire-based survey of managers from plastic manufacturing SMEs operating in Portugal that were subjected to a Partial Least Squares-Structural Equation Modelling (PLS-SEM) technique. The results show that proactive firms to external stimuli are not only better at innovating but also their entrepreneurial orientation capabilities underpin a better performance in international markets when compared with firms that react to external stimuli. This study has implications for SMEs aiming at increasing their export performance and innovativeness. For practitioners the findings of this study should enable SMEs owner/managers to better understand the possible impacts of innovation capabilities and entrepreneurial orientation on export performance, and thus lead to more effective SMEs management.

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