User's Privacy in Recommendation Systems Applying Online Social Network Data, A Survey and Taxonomy

Recommender systems have become an integral part of many social networks and extract knowledge from a user's personal and sensitive data both explicitly, with the user's knowledge, and implicitly. This trend has created major privacy concerns as users are mostly unaware of what data and how much data is being used and how securely it is used. In this context, several works have been done to address privacy concerns for usage in online social network data and by recommender systems. This paper surveys the main privacy concerns, measurements and privacy-preserving techniques used in large-scale online social networks and recommender systems. It is based on historical works on security, privacy-preserving, statistical modeling, and datasets to provide an overview of the technical difficulties and problems associated with privacy preserving in online social networks.Comment: 26 pages, IET book chapter on big data recommender system

Tackling Women's Vulnerabilities through Integrating a Gender Perspective into Disaster Risk Reduction in the Built Environment

The majority of human and direct economic losses from natural hazards occur as a result of damage to the built environment due to the vital role that the built environment performs in serving human endeavours. One of the key reasons for people in developing countries to be more vulnerable to natural disasters than their wealthier counterparts is the limited capacities in their construction industries. Among the people in developing countries, women are evidently even more vulnerable to natural disasters. Due to higher disaster vulnerability of women, recognising the different roles, capacities, vulnerabilities and needs of women, and considering them in disaster risk reduction in the built environment is significant to reduce women’s disaster vulnerabilities. Gender mainstreaming as a way of bringing a gender perspective into disaster risk reduction can be applied to recognise the varying needs and capacities of women, and integrate them into disaster risk reduction in the built environment. The paper in this context aims to demonstrate how gender mainstreaming helps to bring a women’s perspective into disaster risk reduction in the built environment. It identifies two main steps which involve in the process, identification of women’s DRR knowledge and needs, and integration of the identified DRR knowledge and needs into DRR in the built environment. The paper provides an account of the process that the study established to incorporate a gender perspective into disaster risk reduction in the built environment based on a case study conducted in Sri Lanka. It further discusses how the social, economic, political and environmental context influences the process of gender mainstreaming in disaster risk reduction in the built environmen

Internet of things

Manual of Digital Earth / Editors: Huadong Guo, Michael F. Goodchild, Alessandro Annoni .- Springer, 2020 .- ISBN: 978-981-32-9915-3Digital Earth was born with the aim of replicating the real world within the digital world. Many efforts have been made to observe and sense the Earth, both from space (remote sensing) and by using in situ sensors. Focusing on the latter, advances in Digital Earth have established vital bridges to exploit these sensors and their networks by taking location as a key element. The current era of connectivity envisions that everything is connected to everything. The concept of the Internet of Things(IoT)emergedasaholisticproposaltoenableanecosystemofvaried,heterogeneous networked objects and devices to speak to and interact with each other. To make the IoT ecosystem a reality, it is necessary to understand the electronic components, communication protocols, real-time analysis techniques, and the location of the objects and devices. The IoT ecosystem and the Digital Earth (DE) jointly form interrelated infrastructures for addressing today’s pressing issues and complex challenges. In this chapter, we explore the synergies and frictions in establishing an efficient and permanent collaboration between the two infrastructures, in order to adequately address multidisciplinary and increasingly complex real-world problems. Although there are still some pending issues, the identified synergies generate optimism for a true collaboration between the Internet of Things and the Digital Earth