Alessio Cardillo

Mariana Macedo, Ronaldo Menezes, Alessio Cardillo

We investigate how parenthood and marriage (two major life events) reshape urban mobility patterns, an aspect overlooked in traditional `average citizen' mobility models. Leveraging US census data, we analyse whether these life transitions create distinct urban experiences. Parenthood introduces new priorities including caregiving responsibilities, work-life balance adjustments, and access to family-friendly environments. Similarly, marriage introduces new dynamics including shared household decision-making, potential dual-income benefits, combined residential preferences, and shifts in social networks and lifestyle patterns. Our analysis demonstrates that cities vary significantly in how mobility can be accommodated by different household arrangements: some better accommodate either single individuals (Houston, Virginia Beach) or married people (Atlanta, Baltimore), whereas others favour parents (Cincinnati, Chicago). This classification becomes increasingly relevant for individuals and families as remote work expands relocation possibilities. We find that parents and married individuals face different mobility costs and amenity access patterns compared to their counterparts, with variations consistent across multiple null model tests. This research advances urban planning discourse by advocating for tailored design strategies addressing diverse demographic needs rather than one-size-fits-all approaches.

Andrea Martini, Alessio Cardillo, Paolo De Los Rios

The organization and evolution of science has recently become itself an object of scientific quantitative investigation, thanks to the wealth of information that can be extracted from scientific documents, such as citations between papers and co-authorship between researchers. However, only few studies have focused on the concepts that characterize full documents and that can be extracted and analyzed, revealing the deeper organization of scientific knowledge. Unfortunately, several concepts can be so common across documents that they hinder the emergence of the underlying topical structure of the document corpus, because they give rise to a large amount of spurious and trivial relations among documents. To identify and remove common concepts, we introduce a method to gauge their relevance according to an objective information-theoretic measure related to the statistics of their occurrence across the document corpus. After progressively removing concepts that, according to this metric, can be considered as generic, we find that the topic organization displays a correspondingly more refined structure.