The Our society is currently a hybrid society, where we move around without a clear distinction between the digital world and the real world. Faced with the speed of information, true or false, the boundaries are blurred, and it is difficult to determine which knowledge prevails over the other.

In the last decade, issues related to digital communication have become increasingly prevalent in the different spheres of our society. If we think of digital communication as the set of norms related to appropriate and responsible behaviour in the use of technologies, digital citizenship, an important issue in the digital age, and the educational sphere are no exception. We currently live in a world that has been transformed by digital technologies, allowing effortless connection through social networks and access to vast amounts of information. The ability to deconstruct this hyper-rich information and get involved effectively and responsibly poses a few new challenges as we seek to prepare citizens to exercise their rights and participate effectively in community affairs.

In contexts where access to the internet is limited, or technological devices do not yet exist for everyone, it makes sense to study the ways in which digital communication processes can be facilitated through the actions of those who have been given a privileged opportunity through scientific training.

The aim of this work is to map the effects of digital communication acquired during postgraduate training at the Universidade Aberta (UAb) by professionals from Portuguese-speaking African countries (PALOP – Países Africanos de Língua Oficial Portuguesa) and to characterize the levels of current application of this digital communication by former students in their work contexts.

From a methodological point of view, this is a quantitative, exploratory study that aims to identify regularities and trends that characterize the digital communication developed and to assess its effects on the current professional activities of former students from the PALOP who attended a postgraduate course at UAb of Portugal, in the last five years. The choice of these recipients is due both to the borderless vocation, within the Lusophone space (the Lusophone Space is made up of territories where Portuguese is an official language), of the training offered by the Universidade Aberta (Open University), thanks to its virtual learning model, and to the fact that these professionals work in contexts where access to technological educational resources is more difficult.

To operationalize this aim, a questionnaire was drawn up to identify the contribution made by the training to the digital communication acquired by the former students who are the subject of this study. The questionnaire was organized into three distinct parts. The first part was aimed at characterizing the respondents in terms of age, gender, profession, and training attended at university education. The second block of the questionnaire was designed to assess the contribution of the training carried out at the University to the development of the respondents' digital skills. The third part of the questionnaire aimed to assess the effects of the digital training developed during the training at Universidade Aberta (on the respondents' current professional activity. Within these effects, we were interested in knowing the degree of applicability of digital communication skills; the digital tools used; the degree of usefulness of these digital tools in their current professional activity; the most important activities they carry out in their professional activity that use digital; and the ethical and security concerns they are aware of. In this paper, we will focus solely in the last part, on the contribution of the training carried out at the Open University of Portugal to the development of digital communication skills in professional life.

To map out the study's population and sample, all Universidade Aberta students and former students who met the two initial conditions were identified: being from the PALOP countries and having attended a postgraduate course. This process made it possible to identify 130 students who were sent a request to take part in the study. Of the 130 students who made up the population, 61 agreed to answer the questionnaire (47 per cent).

The questionnaire was administered digitally on the GOOGLE forms platform between 15 November and 15 December 2023.

Descriptive analyses were made comparing the aspects that identified the training and the corresponding aspects that characterize the professional activity of the respondents.

As mentioned, access to the former Universidade Aberta students who made up the population was provided by the University itself, so that these people could be contacted via email. However, the questionnaire they were asked to fill in did not identify them in any way, and the questionnaire itself explained the aims of the study and other ethical safeguards, which is how informed consent was requested.

The 62 respondents, 20 women and 42 men, are on average 43 years old (45 women and 43 men) and come from 4 of the countries in scope: Cape Verde (18), Angola (17) São Tomé (2) and Mozambique (25). Of the 62, only 4 do not work in their countries of origin, but in other Portuguese-speaking countries, and one in a different country. The courses they attended at the Open University of Portugal are some of the most diverse 2nd and 3rd cycle courses offered by the university, although the courses in Mathematical Statistics and Computing; Management/MBA; Portuguese Language Studies and Pedagogical Supervision were the ones with the highest number of respondents.

Half of the respondents are currently teaching, mainly in higher education, but also in other levels of education, and the other half of the sample is divided between other professions and other positions, namely management positions (2), research positions (3), managers (5) and senior technicians in various fields (19).

On average, the time spent working (total weekly working hours) is 33 hours, with men reporting a higher number of weekly working hours (34 hours) while women report 29 hours. On the other hand, the time they spend on professional activities only possible with digital devices (aka computers) is 23 hours on average, 24 hours for men and 21 hours for women.

During the course at Universidade Aberta (Figure 1), the former students considered the activities they carried out using digital media to be between important and very important, which consisted of searching for resources; carrying out the activities requested; processing the information collected; working in groups with colleagues; presenting work and reorganizing work after receiving feedback from the teacher. Except for this last item, which does not apply to the professional context, we can see that in the professional activity the former students equally value the possibility of carrying out professional work, performing the same type of tasks. This is a case of recognizing the similarity of the tasks, if not the preparation and training that attending the course has given them in reorganizing their professional tasks.

About the importance of ethical issues, the training carried out at the UAb served as a starting point for raising awareness of this importance, since the levels obtained in the appreciation of these issues in relation to the course were systematically slightly less important when compared to the current importance felt in a professional context.

From the point of view of applicability in current professional life, we can see from the responses collected a similar valuation, almost always between important and very important. Only e-mail is a communication tool that is perhaps more important in the current professional life of most former students.

In today's professional life (Figure 2), the digital tools mentioned seem to be of greater importance to the respondents, in absolute terms and when compared to their importance in relation to learning. Even educational videos and games and scientific simulation tools are of greater relative importance in terms of their use in the respondents' professional context.

In Figure 2, we show the data on the dimensions of digital communication in relation to the professional activities carried out by the respondents and we see a progressive decline in the importance/or use of digital in professional contexts, depending on whether it is communication/collaboration, working on platforms or using computer applications, or producing resources or products. We also found significant differences between digital literacy and its access and the two dimensions of working and producing digital artefacts. There are also significant differences between this last dimension of digital competences and the dimension of communication and collaboration in terms of use and importance for the respondents' professional activity. Finally, it should be noted that awareness of ethical and security issues are important aspects of self-described digital competence.

From this comparative assessment of the aspects that were present in the training attended at Universidade Aberta and the digitally modelled activities that the former students are currently engaged in, there is a tendency to deepen and give greater importance to both communication skills and the use of digital tools, as well as the increasingly digital dimension that characterizes the professional activities that the respondents are engaged in. It therefore makes sense to provisionally conclude that the contribution of the training provided to the digital skills acquired by the former students in this study may have been to sensitize, initiate or train them.

It is now time to look at the objectives of this work and see how they have been met.

Mapping the effects of digital communication acquired during postgraduate training at the Universidade Aberta of Portugal by professionals from the African Portuguese-speaking countries (PALOP) made it possible to see the different levels of training obtained by former students during their courses. What was also found was that the general dimension of digital literacy and the dimension of communication and collaboration were the ones with the highest levels of agreement among the respondents regarding the importance that the training they received gave them.

The study also showed that in their current professional lives (at the time of answering this questionnaire) almost all the digital tools mentioned are of greater importance to the respondents, in absolute terms, when compared to their importance in relation to the learning carried out during the course attended at the university education. As this greater importance refers to current use, it is also inferred how important the training provided at the Universidade Aberta was in enabling students to use these tools, as well as their relevance to the performance of the former students' professional activities. There is also evidence of the alignment between the digital tools mobilized by the UAb training offer and their usability and suitability for professional contexts.

Another important conclusion, due to its wide-ranging significance, is that which relates the time dedicated to digital activities within the profession to the importance attributed in general to the tasks in which digital competence is operationalized. In fact, like [7], it's not just a question of using technologies to produce work, but also of reflecting on the impact of this use in reconfiguring the way we think.

The results presented have limitations that the study could not overcome it was not possible to accurately assess the effect of the pandemic, nor was it possible to analyse in greater detail the weight of personal variables on the results obtained. These limitations result from the size and non-random nature of the sample.

However, despite these limitations, the study presented here is important for understanding the power of the use of digital communication and its influence on shaping the actions of former Universidade Aberta of Portugal postgraduate students, which we hope to be able to further develop.