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This study reports how senior citizens domesticate their personal mobile devices at the beginning of learning process in an adult education class. The aim of this study was to examine how seniors integrate their mobile devices into their personal education experience, what sort of processes were experienced to render the devices useful and meaningful, and how gender and information literacy influenced...
Location-disclosure is a major privacy issue in vehicular social networks when people are interested in traffic-related cooperation drive, location-aware services, and other applications. In this paper, we propose a Social-aware Location-privacy Protection (SLP) method in vehicular social networks to protect location privacy. This method enables trustworthy users to obfuscate an original sender's...
Opportunistic Mobile Social Networks (MSNs) are a type of delay-tolerant networks that are composed of mobile nodes with social characteristics. Most of current research on forwarding algorithms for MSNs leverages the properties of social networks, such as community and centrality. However, the fundamental property, interaction, has not received sufficient attention. The effects of interactions consist...
Mobile communications are increasingly contributing to the Internet traffic. Users move within cellular networks and generate traffics of different types. In this paper, we propose to categorize cellular base stations from multiple dimensions. Key social characteristics of the base stations are jointly considered, including traffic fluctuation, user non-determinacy, temporal homogeneity and usage...
Resource discovery strategy is an important part of mobile peer-to-peer network. How to response the users' query rapidly and effectively is related to the efficiency and the performance of the mobile P2P system. In this survey, we give an overview of the background and the characteristics of mobile P2P networks. We also provide a classification for mobile P2P networks, and review the corresponding...
We describe our analysis of three months worth of collected human-physical environment interactions (foursquare check-in) data for two European cities: a medium-sized city in the Mediterranean and a larger city in North West Europe. Our analysis shows that though the data generated by the citizens is scarce (i.e. on average less than 15 users checked in at any time during the day), nevertheless they...
We present the results of the third phase in a three part study developing an application to reduce obesity levels in adolescents with a mobile fitness application that encourages youth to engage in fitness activity by providing social networking tools to facilitate motivation. In the first phase, we studied effecting positive attitudinal changes towards fitness. The second phase studied physical...
In the past years, mobile Internet has witnessed a flourish of various social networking applications. To well understand traffic characteristics of social networking applications and potential impact on mobile networks, we set up an experiment mobile network and analyzed the dynamic traffic behavior of the popular social networking applications in East Asia by typical smartphones. It is observed...
This paper proposes a topic-based method to reflect calls and proximities simultaneously into finding interaction patterns from a mobile log. For this purpose, the proposed method regards calls and proximities as a homogeneous information type that are drawn from the same temporal space expressed by the same distribution, but with different parameters. The number of proximities in a mobile log usually...
The digitization of social networks has enabled the passive collection of large scale data, which in turn have fostered social studies that have been traditionally dependent on small scale, interview-based data. During the last years, a new class of digital social networks has emerged, namely, location-based social networks (LBSNs). The main interaction between users of an LBSN is location sharing,...
The aim of pervasive system technology is to support the user in managing and interacting with devices in the environment around him/her. By contrast social networking systems are aimed at supporting communication and interactions between people. The major objective of the SOCIETIES project is to unite these two technologies in a seamless manner to create a platform that enables the user to interact...
Mobile Social Network in Proximity (MSNP) is a new form of social network in which users are capable of interacting with their surroundings via their mobile devices in public mobile peer-to-peer (MP2P) environments. However establishing such an MSNP faces several trust issues. A classic MP2P trust scheme usually requires high amount of data transaction in order to identify the trustworthiness of service/content...
We present the results of the second phase of a multiphase study into the feasibility of combating growing adolescent obesity rates with a fitness game deployed on mobile devices. The fitness application includes tracking software to measure and count exercises performed and socialization features to compete and collaborate with friends. In the first phase of our study we tested producing positive...
Mobile Internet traffic keeps a fasting-growth globally. This paper is to shed light on the traffic analysis and policy control in EV-DO systems. Large-scale datasets collected from an urban area are studied for characterizing the application/subscriber usage and downlink-uplink imbalance. Our observations show that HTTP and P2P contribute over 80% traffic, due to the prevalence of video applications...
We evaluate an algorithm that efficiently computes short paths in social networks by exploiting their spatial component. The main idea is very simple and builds upon Milgram's seminal social experiment, where target individuals were found by having participants forward, or route, messages towards the target. Motivated by the somewhat surprising success of this experiment, Klein berg introduced a model...
The plethora of talks and presentations taking place at academic conferences makes it difficult, especially for young researchers to attend the right talks or discuss with participants and potential collaborators with similar interests. Participants may not have a priori knowledge that allows them to select the right talks or informal interactions with other participants. In this paper we present...
Location-based mobile applications such as Foursquare help bridge the gap between offline and online. People that we encounter and connect with around physical resources such as meetings, provide opportunities for extending our social networks. We investigate how social connections can be established and integrated with workplace resources using location through our application called Find & Connect,...
Compression enables communicating information with a smaller amount of data and, in some cases, also saves energy in mobile environments. In order to achieve this we formalize conditions for energy efficient compression. In a basic compression case the condition is ec/(1-C) ≤ Eb. It defines compression to be efficient, if the compression energy cost for the gained compression on the left hand side...
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