Jae-Hyun Jun

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Recently, more and more services need high quality bandwidth. In order to satisfy those services, high-speed networks are needed. The Task Force team of IEEE 802.3ah set a standard as Ethernet Passive Optical Network (EPON) that is a next generation subscriber access network. IEEE 802.3av developed 10G EPON which has 10 times more capacity than EPON to(More)
Epigalloccatechin-3-gallate (EGCG) is the main polyphenol component of green tea (leaves of Camellia sinensis). EGCG is known for its antioxidant, anti-inflammatory, antiviral, and anti-carcinogenic properties. Here, we identify EGCG as a new inhibitor of ocular angiogenesis and its vascular permeability. Matrix metalloproteinases (MMPs) and vascular(More)
Internet users are increases, distributed denial of service (DDoS) attack present a very serious threat to the stability of the internet. The DDoS attack, which is consuming all of the computing or communication resources necessary for the service, is known very difficult to protect. The threat posed by network attacks on large network, such as the(More)
While the increasing number of services available through computer networks is a source of great convenience for users, it raises several concerns, including the threat of hacking and the invasion of user privacy. Hackers can easily block network services by flooding traffic to servers or by breaking through network security, hence causing significant(More)
DDoS attack becomes a challenge to the security of the Internet. The DDoS attack, which consumes a lot of valuable computing of communication resources, is known hard to defend. Aiming to the threat caused by DDoS attacks, current network requires an effective detection method. Therefore, an intrusion detection system on large network is needed for(More)
A number of research efforts are made for transmission of real-time traffic over the Ethernet network because of growth of digital media devices. Standardizations of network techniques for real-time traffic over Ethernet are in progress in IEEE 802.1 AVB TG. In this paper, Active MSRP which is based on IEEE 802.1Qat-a bandwidth reservation method-was(More)
The high speed Internet causes an increment of network traffics and multimedia applications. Among this, Video streaming service is increasing rapidly all over the world. However, a network infrastructure cannot support video traffics sufficiently. Therefore, this study suggested a bandwidth reservation mechanism using Internet Group Management Protocol(More)
The high speed Internet causes an increment of network traffics and network applications which used voice, data, and multimedia services. Among this, multicast video streaming service is increasing rapidly all over the world. However, a network infrastructure cannot support video traffics sufficiently. Therefore, this study suggested a bandwidth reservation(More)
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