Graffiti can sometimes be a problem when put in an inappropriate place. We looked at a means to prevent such inconvenience. In this work, we explore the possibility of developing surfaces with controlled wettability. If the paint does not spread, the graffiti does not stay. Here, the synthesis and electrodeposition of original 3,4-ethylenedioxythiophene (EDOT) with perfluorinated nucleolipids (...

Understanding requirements of mobile communities is challenging because of their geographical distribution and frequent movement. We present a study of backpackers travelling in Australia which utilizes a research method called contextual postcard questionnaires. The method uses brief, openended questions to solicit contextual responses from backpackers that are relevant for development of tour...

Graffiti is a computer program that checks for relationships among certain graph invariants. It uses a database of graphs and has generated well over 700 conjectures. Having obtained a readily available computer tape of all the nonisomorphic graphs with 10 or fewer vertices, we have tested approximately 200 of the Graffiti conjectures and have found counterexamples for over 40 of them. For each...

In this position paper, I argue for the importance of play when designing systems for digital placemaking. I offer examples of existing placemaking systems that embody the openness prescribed by ludic design and provide an idea that could be further developed during the workshop: digital graffiti.

The handheld organizer or personal digital assistant (PDA) is rapidly becoming a popular organizational tool, and there is a need for evaluation of alphanumeric character entry on these devices. The Palm operating system, the most common PDA operating system on the market, uses two methods for character entry, an on-screen virtual keyboard and a single-character handwriting recognition system c...

Discute o graffiti como patrimônio cultural e propõe que este possa ser preservado para as futuras gerações. Reconhece-se aspecto paradoxal obras do tipo inspiram em relação à proposta de sua institucionalização salvaguarda, posto princípio efeméride carrega si. Questiona-se: é caracterizado material ou imaterial? Como objetivo geral, propôs-se compreender conceitos caracterizem cultural, passí...

We present four empirical measures of the immediate usability of Graffiti, a character recognizer for pen-based computers. Since speed is fully controlled by the user, we measured the accuracy attainable after minimal exposure. The first measure, 79%, is the inherent accuracy, or the extent to which Graffiti strokes match letters in the Roman alphabet. The other three measures were obtained in ...

We study the well-known sociological phenomenon of gang aggregation and territory formation through an interacting agent system defined on a lattice. We introduce a two-gang Hamiltonian model where agents have red or blue affiliation but are otherwise indistinguishable. In this model, all interactions are indirect and occur only via graffiti markings, onsite as well as on nearest neighbor locat...

Since ancient times travellers and tourists were carving or writing their names and messages on historic landmarks. This behaviour has prevailed to this day as tourists try to leave their marks at places they visit. Such behaviour, today often seen as vandalism, is particularly problematic since the society tries to preserve historic landmarks while graffiti often leave indelible markings. One ...