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Blockchain is an emerging technology that can be utilized to break ground for secure provenance through the use of a centralized-based application. The method of distributed ledger can serve as the trust machine mechanism to prevent the malicious attacks. This paper introduces a novel service to complement some open-source blockchain protocols. A vital point of adopting blockchain technology is to...
Virtual Private LAN Service (VPLS) is a widely used network technology which connects geographically distributed customer sites as a local area network. However, the process of provisioning a new VPLS circuit is complicated because service provider has to check device configurations one by one. Therefore, it is difficult to provide the service on demand. OpenFlow, the most notable protocol in Software...
Recently, the Future Internet technology becomes a popular research topic. To solve the problems caused in traditional network, most researchers propose various new network architectures. One of the famous architectures is Software-defined network (SDN), which can help users develop their own strategies freely without the limited functions on physical machines provided by specific venders. One of...
Due to rapid development of Internet, the amount of users around the globe is fast-growing in the past 30 years. It leads to the appearance of many problems, such as lack of IPaddresses, worse quality of service, and so on. In order to resolve these problems, many researchers start to design and implement innovative network architectures, which we call Future Internet. Most Future Internet projects...
Internet has played an important part in the success of information technologies. With growing and changing demands, there are many limitations faced by current Internet. A number of network test beds are created for solving a set of specific problems in Internet. Traditionally, these test beds are lacking of large scale network and flexibility. Therefore, it is necessary to design and implement a...
In part because of the limitations of the TCP/IPprotocols used by the current Internet, the Future Internet has become an attractive network research topic. Recently, several projects focused on the Future Internet have been launched around the globe based on the Open Flow platform, such as those that are part of the GENI project in the U.S., the OFELIA project of FP7 in the E.U., and the FIRST project...
Recently, Cloud Computing is getting considerable attentions not only as the technology trend but also the new business model. Virtualization plays an extremely important role in Cloud Computing. Server virtualization has been achieved using virtualization hypervisor software such as VMware, Xen, and KVM,etc. Virtual Machines (VMs) created by hypervisors share the same physical environment with each...
Due to the rapid development of Internet, there are extensive amount of applications that require fast and stable network communication. However, the infrastructure of Internet is limited by TCP/IP protocol. The Future Internet has become a hot network research topic, such as GENI project in U.S. and FIRST project in Korea. Most of these projects adopt OpenFlow framework in their network environment...
Based on services-oriented architecture(SOA), perfSONAR is a web service infrastructure. The set of elementary functions have been isolated and can be provided by different services. A primary goal of perfSONAR is to make it easier to detect performance monitoring problems among different network domains. perfSONAR has been widely accepted as one of the web service standards by NRENs (National Research...
Network traffic demands grow explosively from multimedia, point-to-point, and E-Science applications. In order to meet such tremendous growth, optical networks has been introduced for exploring higher bandwidth and better QoS guarantee. Problems arise when integrating the whole new optical infrastructure with current IP backbone, including controlling data path and network management. In this paper,...
A new dynamic voltage scaling (DVS) approach to schedule sporadic, hard real-time tasks with shared resource in a power saving way is proposed. Although DVS algorithms have been recognized as a feasible solution to save energy, the scheduling of such tasks has not been fully explored. Thus, in the paper, the problem of power-saving scheduling for sporadic tasks that share a set of serially reusable,...
Genomic sequence databases, like GenBank, EMBL, are widely used by molecular biologists for homology searching. Because of the increase of the size of genomic sequence databases, the importance of indexing the sequences for fast queries grows. In this paper, we propose a new index structure, ACGT-Words tree, for efficiently support query processing in genomic databases. We define the concept of words...
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