Public-display systems are still far from being a medium for meeting people's diverse communication goals. Moving toward open displays will require publication paradigms that can overcome the challenges of meaningful engagement and enable users to fully understand and control the publication process. The metaphors of pins and posters have inspired two complementary paradigms for public displays. Researchers implemented these paradigms in the Instant Places system, which they deployed on 10 displays in diverse urban locations for six months. They collected user and system data regarding the users' practices. The findings improve the understanding of what might drive user-generated content in networks of urban displays. Such knowledge can inform the design of tools and procedures for situated publication in public displays.
Mobile payments still remain essentially an emerging technology, seeking to fill the gap between the envisioned potential and widespread usage. In this paper, we present an integrated mobile service solution based on the near field communication (NFC) protocol that was developed under a research project called MobiPag. The most distinctive characteristic of Mobipag is its open architectural model that allows multiple partners to become part of the payment value-chain and create solutions that complement payments in many unexpected ways. We describe the Mobipag architecture and how it has been used to support a mobile payment trial. We identify a set of design lessons resulting from usage experiences associated with real-world payment situations with NFC-enabled mobile phones. Based on results from this trial, we identify a number of challenges and guidelines that may help to shape future versions of NFC-based payment systems. In particular, we highlight key challenges for the initial phases of payment deployments, where it is essential to focus on scenarios that can be identified as more feasible for early adoption. We also have identified a fundamental trade-off between the flexibility supported by the Mobipag solution and the respective implications for the payment process, particularly on the users' mental model.
Resumo: Escrever sobre crianças trabalhadoras no espetáculo artístico, remete-nos, muitas vezes, para um mundo de glamour, uma experiência ainda pouco conhecida e investigada que conduz a um "senso comum" repleto de ideias pré-concebidas e estereotipadas, daquilo que estas actividades significam e implicam, sobretudo para as crianças. Se analisarmos para além da aparência, considerarmos a essência desse trabalho e compreendermos os mecanismos sociais que o produzem, perceberemos crianças que trabalham muitas vezes longos e difíceis períodos de tempo. Este texto procura compreender, a partir do paradigma crítico da Sociologia da Infância, o papel das crianças que trabalham nas actividades artísticas, considerando-as como parte da indústria do espectáculo e do entretenimento. Pretende, ainda, discutir o conceito de trabalho artístico, que é demasiado amplo, até mesmo para exprimir a essência das realidades que o sustentam. Desta forma, pretende-se contribuir para a análise do Trabalho Infantil Artístico em Portugal, contribuindo para a desocultação de uma realidade que aparece largamente invisibilizada e/ou disfarçada. Assim, pretende conhecer as práticas sociais das crianças artistas, nas suas actividades espaciais e temporalmente situadas (casa, escola, local de realização de actividades, "recreio", etc.), nos modos como tais práticas enredam os grupos sociais de pertença, as instituições de socialização e a vida social em sentido mais lato.Palavras-chave: Infância. Trabalho. Trabalho Infantil Artístico.
No abstract
Digital public displays have an enormous potential as a collaborative technology to socialize in public venues, especially when they are open to the participation of visitors. However, user-generated content is a form of control sharing that requires safeguards against the publication of content deemed inappropriate. In this work, we study the perceptions of Café owners in regard to their acceptance of user-generated content displayed on their venue screens. Our goal is to inform the design of new media sharing services for public displays by uncovering how existing practices with paper leaflets could be leveraged as a conceptual framework for dealing with content appropriateness. Based on interviews with 10 café owners, we identify important insights into some of practices surrounding the distribution of paper leaflets and their implications for the design of media sharing services for public displays.
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