1,721,057 research outputs found
Data Privacy Management and Security Assurance
No full textThe proceedings contain 17 papers. The special focus in this conference is on Quantitative Aspects in Security Assurance, Privacy Protection, Identification, Authentication, Authorization, Security and Secure Applications. The topics include: Metrics for transparency; understanding bifurcation of slow versus fast cyber-attackers; decomposing global quantitative properties into local ones; efficient sat-based pre-image enumeration for quantitative information flow in programs; controlled management of confidentiality-preserving relational interactions; privacy-preserving abuse detection in future decentralised online social networks; searchable encryption for biometric identification revisited; investigating the animation of application permission dialogs; a case study of facebook; Isabelle modelchecking for insider threats; managing and presenting user attributes over a decentralized secure name system; a privacy risk analysis methodology; a study from the data anonymization competition pwscup 2015 and refactoring preserves security
Agile Communication Middleware for Next-Generation Mobile Heterogeneous Networks
No full textThe challenges issued by next-generation mobile communication scenarios clearly emphasize the inadequacy of traditional communication solutions in supporting efficient mobile and pervasive applications. Research so far has focused on higher-layer middleware or on the optimization of TCP-based solutions for wireless environments, but there's an obvious need to focus on communication middleware that can provide the right set of concepts and tools to support future applications
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Variations on the Author
Get PDF“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
Get PDFWe 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
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
DisService: Network state monitoring and prediction for opportunistic information dissemination in tactical networks
No full textInformation dissemination is extremely difficult in tactical edge networks, which provide one of the most challenging environments for communication. The extremely dynamic nature of the tactical environment makes dissemination algorithms based on overlay networks or epidemic routing ineffective, and calls for ad hoc approaches that can dynamically reconfigure the dissemination process, adapting it to the current network conditions. This paper presents the algorithms for opportunistic information dissemination adopted in the DisService project. In particular, the paper investigates what kind of knowledge can be inferred about the interaction between nodes in a tactical network and how to use that knowledge to improve data dissemination algorithms. The algorithms are tested in a NS3 simulated environment and the results demonstrate the effectiveness of the DisService approach
Seamless network migration using the Mockets communications middleware
No full textDue to the underlying dynamic nature of wireless and ad-hoc communication environments, applications in tactical networks have to cope with network disconnections and communication channel degradations. Support for network migration, i.e., the ability of a node to seamlessly change its network attachment point without disrupting service sessions, is therefore essential to provide seamless connectivity to warfighters and unmanned autonomous systems. This much needed utility calls for novel middleware to provide mobility functions on top of the traditional communication infrastructure. The goal of this paper is to present the network migration support in Mockets, a communication middleware specifically designed to address the needs of tactical environments by providing handover capabilities transparently and seamlessly to applications. Mockets automatically takes advantage of the best available network, leveraging on predefined, as well as user-provided, policies to perform migration decisions according to the current network status. The performance tests we conducted demonstrate the effectiveness of our implementation and show that Mockets-based network migrations cause an average measured downtime of 17 milliseconds. From a user's perspective, this short interval makes service appear uninterrupted
- …
