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The ICN (Information-centric networking) is a new network architecture that uses named information rather than IP address for content retrieval and delivery. Owing to the built-in multicast and in-network caching capabilities, ICN is expected to achieve efficient content delivery. Actually, however because the cache capacity of the router is limited, there is a possibility that ICN performance may...
Heart disease has the second highest mortality rate in Japan. In particular, the ischemic heart disease such as the myocardial infarction and the heart failure requires emergency treatment. Although their symptoms emerge as an elevation or depression of the ST segment in ECG (electrocardiogram) waveform, it is very difficult to detect it because the S and T waves are quite small as compared with the...
Heart disease has the second high mortality rate behind cancer in Japan, and requires quick treatment. To take a part in emerging mHealth, we developed a wearable heart disease monitoring and alerting system “Dentan”. Dentan continuously monitors patient's ECG in his/her daily activities and issues an alert to the patient as well as surrounding people if it detects abnormal heart behavior. Dentan...
If IP network only uses conventional routing protocols such as open shortest path first (OSPF), some portions of the network become congested while other portions remain underutilized depending on the variations of traffic demand. MPLS that provides explicit routing along pre-determined path can improve load balancing throughout the network, thus achieves effective network resource utilization. In...
Various web services are offered over the internet and forms the social infrastructure indispensable to our daily life. Many of healthcare systems developed so far are also offered as web service. However, user interface of web services that require web access makes obstacle to elderly or inexperienced users. As a mean to mitigate such digital divide, we developed a generic method of adding telephone...
Topological difference between P2P network and underlying IP network is creating inefficient network resource usage as well as low application performance. To improve this situation, this paper proposes the network aware peer selection methods applicable to P2P file sharing. We compare the peer selection methods that use RTT, Window-size and path available bandwidth. Path available bandwidth can be...
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