This paper analyses the self-representations of Portuguese media professionals and their work practices. Utilizing data from a broader empirical study, this paper delves into the dynamics of influence among various actors within newsrooms. Based on journalists’ perceptions of the content, the methods they use to assess the quality of the news are also identified. To address these enquiries, a survey was conducted among professionals engaged in the news production process. This sample comprised 72 individuals from various sectors of newsrooms, including photographers, designers, IT professionals, social media managers, and videographers. The main results indicate that seven out of ten respondents acknowledged their reliance on colleagues in newsrooms for success. Furthermore, the data suggest that there are no significant disparities among different professionals, with personal satisfaction emerging as the primary criterion for assessing the work quality. It is notable that almost twice as many women tend to indicate the low impact of the journalist on their work compared to male respondents. Moreover, most respondents stated that there is space for hybrid professionals in newsrooms.

The aim of this article is to establish the convergence and error bounds for the fully discrete solutions of a class of nonlinear equations of reaction–diffusion nonlocal type with moving boundaries, using a linearized Crank–Nicolson–Galerkin finite element method with polynomial approximations of any degree. A coordinate transformation which fixes the boundaries is used. Some numerical tests to compare our Matlab code with some existing moving finite element methods are investigated.

The aim of this paper is to study the convergence, properties and error bounds of the discrete solutions of a class of nonlinear systems of reaction–diffusion nonlocal type with moving boundaries, using the finite element method with polynomial approximations of any degree and some classical time integrators. A coordinate transformation which fixes the boundaries is used. Some numerical tests to compare our Matlab code with a moving finite element method are investigated.

The aim of this paper is to establish the convergence and error bounds to the fully discrete solution for a class of nonlinear systems of reaction-diffusion nonlocal type with moving boundaries, using a linearized Crank-Nicolson-Galerkin finite element method with polynomial approximations of any degree. A coordinate transformation which fixes the boundaries is used. Some numerical tests to compare our Matlab code with some existing moving finite elements methods are investigated.

This paper aims to discuss relations between Depth Hermeneutics proposed by Thompson (1995) and Critical Discourse Analysis, specifically the so-called Textually Oriented Discourse Analysis proposed by Fairclough (2003), as mixed methods applied to research on processes of participatory practices in the media. The methodology of the research we discuss here results from the combination of these instruments and supports the analysis and interpretation of data collected and generated in a case study. The research scenario is a converging environment, including the convergence of technology, media, public and genres. The findings denote that dialogue between the two qualitative approaches enables the research of discursive processes involving social issues.

Giardia lamblia é um protozoário intestinal flagelado com distribuição global causador da doença conhecida como giardíase. Este parasito é responsável por 35,1% dos surtos de diarreia causada por água contaminada e acomete principalmente crianças nas quais pode causar comprometimento físico e cognitivo. Nesta Dissertação, considera-se um modelo de dinâmica populacional baseado na teoria de jogos evolutivos para representar o comportamento da Giardia lamblia in vitro, levando-se em consideração a característica do protozoário de resistir a ação do fármaco metronidazol. Diferentemente do que se encontra na literatura, persegue-se como objetivo de controle a exterminação do protozoário considerando-se que os parâmetros do sistema são incertos e apenas a medição parcial do vetor de estado está disponível. Sob essas hipóteses, uma lei de controle é projetada tais que provas de convergência são rigorosamente demonstradas para o sistema em malha fechada. Resultados de simulações são apresentados para ilustrar o comportamento da malha fechada.