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The burst of data leads to new requirement for high capacity of communication networks, bringing more activities for the industry. Some institutes public long term traffic forecasts for individual countries or continents even for the world, few of which have their forecasting methods known to the world. However, long term traffic forecasting is important for the industry to form a long-term strategy...
This paper explores the issue of caching during TIP-tree navigation for location-based services. The TIP-tree is a recently proposed spatial access method for supporting continuous point queries in a tourist information system. In addition, its navigation strategy avoids repeating searching, thus providing efficient processing of user trajectories that are not known in advance. This paper proposes...
Nowadays, cloud computing is commonly used as a service infrastructure. As the computing paradigm has been shifted to cloud computing, devices can utilize the centralized resource in the cloud. With this flexible resource, users can get the benefit with the any-where/any-time/any-device accessible resource. With these environments, many research papers regarding mobile cloud named cloud offloading...
Social communication networks have been widely investigated in recent years. From fine-grained temporal information's point of view, social vector clock (SVC) is a useful mechanism to track the most recent communication with all other local peers in a social network. A modification of conventional social vector clocks has been proposed to deal with the issue of poor scalability without keeping whole...
Nowadays, cloud computing is commonly used as a service infrastructure. As the computing paradigm has been shifted to cloud computing, most people think that a device could get less powerful than before because the computing resources could be elastically accessible from the device anytime/anywhere. However, most smart devices including smart TV and mobile phones are still getting more powerful, even...
Although latency in the Internet has gained much attention in the research community, the latency issues of mobile control signaling have received less attention, and this all the while many telecom operators are experiencing a several-hundred percent increase in signaling traffic over only a couple of years. We believe one way to address both the latency and increased signaling load of mobile networks,...
This article addresses a triple transition related to the emergence of the Internet of Things, IPv6 and cloud applications. It presents the potential use of IPv6 and CoAP to enable a global and scalable interconnection of the Internet of Things (IoT) together with the cloud, focusing on Software as a Service (SaaS). It presents a potential use of IPv6 addressing scheme, taking into account the scalability...
National web archive that preserves national knowledge for generations to come has been successfully made available through a domain-specific web crawler for years. However, that kind of crawler still misses many foreign language web pages that are also related to the nation. In this paper, we propose a new crawling approach to collect national related web pages written in a foreign language, especially...
Web Search Engines (WSE) are devised to cope with highly dynamic and demanding query rates. Reaction of users to worldwide events produces high peaks in traffic which forces data centers to have over-provisioned resources to support flash crowds events, however, most of the time servers have a low utilization wasting energy resources. In this paper we analyze the collaboration of the Internet Service...
GitHub is a popular platform for collaboration on open source projects. It also provides a rich API to query various aspects of the public activity. This combination of a popular social coding website with a rich API presents an opportunity for researchers to gather empirical data about software development practices. There are an overwhelmingly large number of competing platforms to choose from in...
Japan is prone to natural disasters occurring including earthquakes, tsunami, typhoon, heavy rain and snow. A wide range and quick information gathering systems are needed after a disaster has occurred. In addition, wireless networks are very useful at a disaster has occurred. By using wireless networks, we can build a network quickly using moving vehicles. But there is a challenging communication...
Question and Answer sites like the Stack Exchange network allow users to contribute knowledge in a variety of topics. Of particular interest are the habits of expert users, or users with high reputation scores. Expanding on previous work done by Bosu et al., we performed an exploratory analysis of the data to determine if there is a positive correlation between user reputation scores and the diversity...
Approaches of using Wireless Body Area Sensor Network (WBASN) in health care applications are getting much popularity. WBASN is a hot topic among the research community. Our proposed Horizontal moveable Energy-efficient Adaptive Threshold-based (HEAT) protocol is well suited for horizontally moving (walking) human body. The on body nodes attached at arms and legs of human body move forward and backward...
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