1,720,960 research outputs found
NFC ticketing: a prototyping and usability test of an NFC-based virtual ticketing application
No full textDesign and development of a social shopping experience in the IoT domain: The ShopLovers solution
No full textIn this paper the authors approach the Internet of Things field describing the ShopLovers solution as a tool to create an environment of interconnected objects through RFID/NFC technologies. The objective of the ShopLovers solution is to enhance sociability for customers and to empower social media marketing solutions for companies and brands. The prototype described here is the result of the collaboration between two laboratories of CATTID (Centre for Application of Teleservices and of Technologies for Innovation in Digital world), one dealing with ICT and the other dealing with Web and Mobile Usability. CATTID is a research centre within "Sapienza" University of Rome. After giving a technical overview on Near Field Communication (NFC) and Internet of Things (IoT) related scenarios, the authors explore the growth of Web 2.0, discussing the way it is changing communication between people and brands. Finally, the authors present the ShopLovers solution, describing both the architectural components and the design process which has followed a User Centered Design (UCD) methodology. © 2011 University of Split
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
A survey about user experience improvement in mobile proximity payment
No full textIn this paper we intend to investigate the problem of the mass adoption of new payment instruments, such as Near Field Communication enabled mobile phones, by analyzing the results of the survey on Mobile Payment in Italy conducted by the "Center of Expertise on Technological Innovation" of CATTID (Centre for Application of Teleservices and Technologies for Innovation in Digital world), Sapienza University of Rome. By working at CATTID as specialized researchers on the NFC technology, now that NFC is getting increasingly attention from a commercial point of view, we want to deepen the matters of the users wants and needs about mobile payment, with a view to its wide mass adoption. The method of investigation we chose has been both qualitative and quantitative. From our study, focused on Italian users, we have found that, although users are ready to adopt mobile payment instruments, the market scenario is not growing so fast and the difference will be made by the level of confidence in the financial transaction perceived by consumers. On this, NFC technology is on the good way and we can imagine possible evolution in the security and marketing fields. © 2012 IEEE
KerNeeS: a protocol for mutual authentication between NFC phones and POS terminals for secure payment transactions
No full textThe aim of this paper is to propose a solution for a potential vulnerability in mobile proximity payment. The mobile proximity payment is the evolution of the card payment whose reference standard is EMV (Europay, MasterCard and VISA). A mobile proximity payment transaction is performed via radio waves so there is the possibility to intercept the communication with the point-of-sale and also to activate the payer device, in a range of 10 cm. The EMV protocol assumes that within a range of 10 cm card fraud is hard to perform, moreover IC card capable point of sale are considered safe a priori, while the card must authenticate itself. This allows a leak of card information. In this paper we describe a possible solution to this problem, adding a safe level to the EMV protocol in the case of mobile proximity payment transactions. Our solution is a Needham-Schroeder based protocol, that guarantees authentication and confidentiality between the entities involved in the payment
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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