The State of the Art in Multilayer Network Visualization

Modelling relationship between entities in real-world systems with a simple graph is a standard approach. However, realityis better embraced as several interdependent subsystems (or layers). Recently, the concept of a multilayer network model hasemerged from the field of complex systems. This model can be applied to a wide range of real-world data sets. Examples ofmultilayer networks can be found in the domains of life sciences, sociology, digital humanities and more. Within the domainof graph visualization, there are many systems which visualize data sets having many characteristics of multilayer graphs.This report provides a state of the art and a structured analysis of contemporary multilayer network visualization, not only forresearchers in visualization, but also for those who aim to visualize multilayer networks in the domain of complex systems, as wellas those developing systems across application domains. We have explored the visualization literature to survey visualizationtechniques suitable for multilayer graph visualization, as well as tools, tasks and analytic techniques from within applicationdomains. This report also identifies the outstanding challenges for multilayer graph visualization and suggests future researchdirections for addressing them

Application of the Forgotten Effects Theory for Assessing the Public Policy on Air Pollution of the Commune of Valdivia, Chile

Environmental public policy is challenged by its complexity and uncertainty as manifested in Wicked Problems. Incentives were considered to encourage behavioural change in the public policy on air pollution in Valdivia, Chile. However, air pollution is still increasing due to extensive usage of firewood. This research aims to assess the policy within the identified incentives and behaviours by applying the Forgotten Effects theory. Empirical evidence of Forgotten Effects in the policy is provided by using data from key informant interviews. A major finding of the research is that a subsidy on transportation has no effect on reducing air pollution in residential areas. It also suggests that if people improve thermal insulation of their houses in the commune of Valdivia may contribute to a major reduction of air pollution rather than improving the quality of firewood. Education, Research and Development may also play an important role to encourage behavioural change. The latter will also contribute to the improvement of overall energy efficiency and thereby lower emissions

Exploring Spot Market Users' Willingness-to-Pay for Service-Level Agreements in Cloud Computing

Most of studies on interoperability of systems integration focus on technical and semantic levels, but hardly extend investigations on pragmatic level. Our past work has addressed pragmatic interoperability, which is concerned with the relationship between signs and the potential behaviour and intention of responsible agents. We also define the pragmatic interoperability as a level concerning with the aggregation and optimisation of various business processes for achieving intended purposes of different information systems. This paper, as the extension of our previous research, is to propose an assessment method for measuring pragmatic interoperability of information systems. We firstly propose interoperability analysis framework, which is based on the concept of semiosis. We then develop pragmatic interoperability assessment process from two dimensions including six aspects (informal, formal, technical, substantive, communication, and control). We finally illustrate the assessment process in an example

A roadmap for research on identity in the information society

As research into identity in the information society gets into its stride, with contributions from many scholarly disciplines such as technology, social sciences, the humanities and the law, a moment of intellectual stocktaking seems appropriate. This article seeks to provide a roadmap of research currently undertaken in the field of identity and identity management showing how the area is developing and how disparate contributions relate to each other. Five different perspectives are proposed through which work in the identity field can be seen: tensions, themes, application areas, research focus and disciplinary approaches and taken together they provide a comprehensive overview of the intellectual territory currently being tilled by academia on this subject. This attempt at a coherent overview is offered in the spirit of debate and discussion, and the authors invite criticism, development and improvement. Another purpose of this paper is to provide an introduction to the range and type of research that the new journal Identity in the Information Society will publish, giving researchers working in the field a clearer idea of the scope of multidisciplinary study that is envisaged