 Hi everybody! My name is Raffaella Gozzellino and I am Director of the Atlantic Technical University, located in Sampicente Island in Cape Verde. I'm also a professor at Nova Medical School, Nova University of Lisbon and a group leader of a research lab. I direct the Chronic Diseases Research Center in Portugal. Today I would like to talk to you and explain to you what preprint servers and institutional repositories are. Preprint servers are online archive where you can find all the data sets associated with the research that has not been yet validated by a peer-reviewing process of an academic center in Germany. It is a way that authors have to publish their data and render the raw manuscript, the draft of what they are working on, publicly available, receiving like this inputs that might then allow them to improve their research and therefore to increase the publication rates. Over the last 10 years, the number of preprint servers increased explosively. There are nowadays more than 60 platforms that authors can use in all areas of interest that range from maths, physics, biology, medicine, etc. So this is something that is also used by the university or even more by research institutes and this is why our as well called in this cases institutional repositories because are mandated by the institution and is a way that the institution found to collect, to preserve and to disseminate the knowledge that is being produced by the academics that are working in that institution. It varies from articles, thesis dissertation, administrative proceedings, etc. So you can really find all what belongs to an institution that has not been peer-reviewed by international academics or investigators associated to an academic journal. So it's a way as well that universities found to increase dramatically their visibility because like this is freely available to all scientists and all scientists that can see what that institution outcomes are and therefore potentially select that institution for the next step in the professional career. Sharing knowledge is the basis of science. Science is a collaborative effort and therefore this preprint were funded with this purpose of render knowledge available to all scientific communities in all areas of expertise. And you have you ever published a writing in a preprint server?