Animal Footprints on Roman Tiles from Perge and Aizanoi

Each Four-Celled Animal Tiles the Plane

DNA Tiles, Wang Tiles and Combinators

In this paper we explore the relation between Wang Tiles and Schonfinkel Combinators in order to investigate Functional Combinators as an programming language for Self-assembly and DNA computing. We show: How any combinatorial program can be expressed in terms of Wang Tiles, and again, how any computation of the program fits into a grid of tiles of a suitable finite, tile set, and finally, how ...

On trees with equal Roman domination and outer-independent Roman domination numbers

A Roman dominating function (RDF) on a graph $G$ is a function $f : V (G) to {0, 1, 2}$satisfying the condition that every vertex $u$ for which $f(u) = 0$ is adjacent to at least onevertex $v$ for which $f(v) = 2$. A Roman dominating function $f$ is called an outer-independentRoman dominating function (OIRDF) on $G$ if the set ${vin Vmid f(v)=0}$ is independent.The (outer-independent) Roman dom...

Empathic Inclination from Digital Footprints

The large amount of personal data left by users on the Internet is a valuable source of information for improving the efficacy of profiling tasks. In particular, the data collected from social media can disclose personal habits, preferences and affective traits. The study is focused on the emphatic inclination of a subject, i.e. the ability to feel and share another person’s emotions, which can...

Anthropogenic footprints on biodiversity

One of the most concerning issues to modern ecology and society is the ongoing loss of biodiversity. Ecosystems are now losing species at rates only seen in previous mass extinction events (Hails, 2008; Barnosky et al., 2011) with rates of extinction between 100 and 1000 times higher than pre-human levels (Pimm et al., 1995). This loss, in turn, is impairing the functioning of ecosystems (Worm ...