For Society

For Society Research Theme

インターネット工学研究室は、広範にわたるインターネット関連技術の研究活動を行っています。ここでは、インターネット工学研究室のメンバーが携わっている主な研究テーマについて紹介します。

最近の研究トピックス

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:スマートフォンを利用した被災者救助支援アプリケーションの設計

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.

ソーシャルネットワーキング

Social Network Service (SNS)と呼ばれるサービスがインターネット上のコミュニケーションサイトとして登場しています。こうしたSNSの代 表例にはmixi, Gree, orkutが挙げられます。SNS利用者はSNS内にて、知人関係やコミュニティへの所属関係を構成し、SNSをコミュニケーションの場として利用しています。こうした人間関係によって構築されるネットワークは、従来のネットワーク構造とは異なり、より人間の趣味嗜好や、認知などの情報を保持していると考えられ、情報検索や情報制御などへの応用が期待されています。SNSのような人間関係ネットワークは、これまで社会学の領域において研究が行われてきました。しかし、今日ではSNSとして、我々が取り扱い可能な形となりました。我々は、SNS内の持つ能力の分析や、既存の問題に対する応用手法の提案、そして未来のdirectory serviceとしてのSNSのあるべ き姿について研究しています。)

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.

ドローンを用いた災害情報収集に関する研究

災害時において、地方公共団体等は救助活動を行うためにも迅速に罹災状況を把握する必要がある。現在、罹災状況を収集するためのツールとしてドローンの利用が期待されている。ドローンは主に空撮に用いられているが、本研究では空撮だけではなく、上空からWi-Fiセンシングを行い避難行動要支援者の存在確認も行う