This study investigates the causal relationships between the electronic media/social media use of college students and their Internet literacy, addressing the effects of social skills and gender differences. We conducted a panel survey targeting Japanese college students and analyzed 107 responses. The following results were produced: (a) The college students in the study reported that they were able to make new friends using Twitter and Facebook and could communicate with strangers in this way; (b) for male students, improving their Internet literacy in relation to Facebook use helped them increase the frequency of their Facebook posts and improved their social skills; and (c) for female students, increasing the frequency of their Facebook posts helped to improve their Internet literacy.
Social networking services (e.g., Twitter, Facebook) are now a major source of World Wide Web (called “Web”) dynamics. We investigate cascading mechanism in Twitter using transfer entropy.
The wide implementation of social networking sites (SNS) in many fields, for instance, government, celebrities, schools, social groups, events promoted by national organizations or private enterprises, NPOs, businesses, etc., attests to its popularity. Currently more and more educators and students have integrated these online social communication platforms into their learning environment. Learning Management Systems (LMS) also have great features and functions that may serve as a bridge between learners and educators leading to better communication, in addition to helping students increase their learning engagement and teachers in evaluating learning performance. Although many studies have investigated the effects of adopting Facebook as an additional learning management system (LMS), its functions and benefits differing from the LMS have hardly been systematically analyzed. Besides, due to the increasing popularity of mobile devices among the younger generation, university students are obviously likely to use their smart phones to access both Facebook Mobile App and school LMS. Therefore, the first purpose of this study is to determine students’ opinions on mobile Facebook course groups and a mobile LMS course group, through a survey conducted after a 2-semester experiment. The other objective of this study is to evaluate the benefits of each function of mobile FB course groups that may strengthen the current weaknesses of LMS. In addition, regression analysis and t-test were used to reveal the relationships among variables: the FB functions and its benefits for FB course group. The findings might provide a clear notion for teachers regarding the functions and advantages contributed by a mobile FB course group which can be implemented as a supplemental learning system. The results of the research will provide university administrators with more detailed information for improving the LMS’ features or developing new LMS Apps.
Encryption-then-Compression (EtC) systems have been proposed to securely transmit images through an untrusted channel provider. In this study, EtC systems were applied to social media like Twitter that carry out image manipulations. The block scrambling-based encryption schemes used in EtC systems were evaluated in terms of their robustness against image manipulation on social media. The aim was to investigate how five social networking service (SNS) providers, Facebook, Twitter, Google+, Tumblr and Flickr, manipulate images and to determine whether the encrypted images uploaded to SNS providers can avoid being distorted by such manipulations. In an experiment, encrypted and non-encrypted JPEG images were uploaded to various SNS providers. The results show that EtC systems are applicable to the five SNS providers.