Joong-Kyung Ryu

Learn More
High performance systems and distributed environment usually deployed to improve users' performance and availability. Recent years, High performance systems and distributed environment suffer from security issues and certain vulner-abilities became the sweetest targets to attackers. Some attacks easily and widely transmit other systems, and lead to(More)
One of the personalized service in the ubiquitous For establishing real u-health environments, it is necessary to receive the context information obtained from various platforms at proper time in portable devices, which are operated in both wire and wireless communication. And, a knowledge model that reflects the information and characteristics for such(More)
An item recommendation service provides an item list by considering the circumstance and desire of users without any limitations in time and location. However, the recommendation systems used in the past are unable to satisfy user desires because these systems only reply to the results of consider static information. This paper attempts to design a(More)
The existing music search and recommendation systems obtain results through query or answer and recommend music using data mining techniques. However, it is not possible to provide active services that satisfy customers in smart home environments because these systems consider only static information in Web environments. In order to solve these problems,(More)
Convergence and advanced technologies spring forth as a result of lateral entry by firms in different markets, and today, there is a synergistic combination of traditional industries and state-of-the-art technologies, such as information technology. The main goal of this issue is to bring researchers from academia together with professionals from different(More)