For Society

Current Research Topics

A Smartphone-based Warning System for Rain-induced Disasters

There is currently a growing concern for climate change considering that it causes the increasing frequency of localized heavy rains. This type of rain events are difficult to detect even with existing weather forecasting systems because they tend to suddenly occur in a small area. Also, detection methods that are currently being developed are high-cost and has low scalability. Moreover, localized heavy rains impact society by causing disasters such as flash floods and landslides, which in turn causes human deaths and severe damage to properties. To reduce such catastrophes, we explore the possibility of a low-cost and scalable warning system using smartphone measurements of network signal strengths and significant weather parameters, such as pressure, humidity, and temperature. We are presuming that a small network of smartphones in an area of less than a kilometer would be able to describe the current weather condition by monitoring the environment and accordingly provide appropriate warnings in the event of a heavy rain.

SOSCast:SOS message Propagation for Locating Disaster Victims using Smartphones

During the first three days right after a disaster happens, which is also known as the "Golden 72 hours", it is important to rescue as many disaster victims as possible since the survival rate rapidly decreases when the said duration has passed. But in a large disaster, citizens suffered major disruptions in telecommunications when equipment and base stations were severely damaged. In this case, victims and rescuers are difficult to correct and send disaster information.
To treat these problem,we focus on smartphone that most of disaster victims may have. Connecting between each smartphones with wireless communications(e.g. Wi-Fi, Bluetooth), and moving them, we can propagate desaster information to other area (called Store-Carry-Forward Network). Propagating rescue call messages created by disater victims using this system, we can reach these messages to rescue team.

Social Networks

Among the many challenges introduced by the IPv6 transition process to the Internet community, one of the most difficult was presented to the network operators. All of the existing production networks were forced to reconsider their inner architecture to move towards IPv6. To support network operators in this challenge, the IETF has proposed multiple IPv6 transition and coexistence technologies. Which one of these technologies is most feasible for their scenario, is still an open problem. To support network operators solve this problem, we are proposing a suite of practical evaluation methodologies, exploring various feasibility dimensions of transition technologies. The methodologies are associated with a heterogeneous IPv4 and IPv6 network testbed, which we called the IPv6 Network Evaluation Testbed (IPv6NET). In order to validate these methodologies, we have used them to analyze the feasibility of two open source transition implementations, covering multiple transition technologies. To that end, we are showing how network performance, scalability and operational capability data can be obtained, analyzed and compared.

Game Studies: Establishing Literary Merit in Video Games

Since the 1980's, video games have been gaining momentum both economically and influentially. Yet despite this widespread and relatively sudden appeal, very little is known academically about the myriad effects that video games have on various aspects of culture and society. That is where the field of Game Studies comes in. Within the context of this research group, the investigation being conducted here deals specifically with understanding how video games convey their meaning. We take special care to consider that video games are fundamentally an interactive narrative medium, wherein player/audience participation is required in order to "finish the story." This research seeks to provide viable answers to the following academic queries:

1)The values and traditions of a culture are transmitted through generations via Oral Tradition, Literature, and Cinema. In the case of video games, does this function exist, and if so, how does it achieve this effect, and just how effective is it?

2) How have traditional myths and stories been represented in video game form? What new insights do we gain from changing a static story into a participatory narrative?

Mobile, Personal Data Offloading to Public Transportation

With the proliferation of smart mobile devices, mobile data traffic is increasing at an unprecedented rate, and the increase then weighs heavily on mobile networks. To relieve the traffic load, data offloading through WiFi and Femtocell has recently attracted considerable attention. They, however, have some difficulties to offload high- volume data objects, such as video data, because of the limitations of their transmission speeds and user mobility. This research explores offloading delay-tolerant and large data objects to public transport vehicles by using high-speed short-range wireless communication.