Due to the progress in information and communication technologies urban space is more and more under the influence of its virtual representations existing in cyberspace. The concept of a digital shadow of the city is multidimensional and difficult to analyze. One of the methods is „cyberscape” – digital layers forming a palimpsest of the place. An analysis of two streams of social media data from Twitter and Flickr during four months of 2012 showed that Poznan’s cyberscape was highly dynamic during that time and strongly influenced by the Euro 2012 mega event. Additionally, it was possible to pinpoint relatively stable locations in the cyberscape that are probably a result of an underlying socio-spatial structure of the city.
The aim of this article is to gain a better understanding of the patterns of human capital mobility in transition economies. It exploits a unique dataset from a Polish social networking website to develop a typology of skilled migration. Determinants of human capital flows are further elaborated using an empirical model of student and graduate migration. It is found that spatial mobility of human capital in Poland is low, and the distance between the home region and potential destination plays the most significant role in migration decisions. Migrations of skilled individuals favour metropolitan areas, which experience a net gain of human capital, while all other regions are subject to brain drain.
The goal of the present study is to determine what types of emotions are displayed by mayors in social media. Their posts at the Facebook social network were tested using sentiment analysis. The study shows that the top concern of the mayors’ agenda built on Facebook is to create their positive image of someone willing to build relationships with citizens. In their personal profile pages, mayors also favour information about specific decisions rather than more general information about events in the municipality. The most important conclusion is that the mayors use emotionally charged social media posts more often than the administrators of the city organization profiles, and that these are usually positive emotions.
