An Improvement of Response Speed for Electronic Commerce Systems. - Il Seok Ko; Choon Seong Leem (Inf. Syst. Frontiers, 2004)

A Digital Content Distribution Using a Group-key and Multi-layered Structure Based on Web. - Yun Ji Na; Il Seok Ko (EUC Workshops, 2005)

An Adaptive Web Caching Method Based on the Heterogeneity of Web Object. - Yun Ji Na; Il Seok Ko; Gun Heui Han (ISPA, 2005)

Development of an Intelligent Information Security Evaluation Indices System for an Enterprise Organization. - Il Seok Ko; Geuk Lee; Yun Ji Na (KES (2), 2005)

The Modified DTW Method for On-Line Automatic Signature Verification. - Dong Uk Cho; Young Lae J. Bae; Il Seok Ko (NPC, 2005)

A Design of the Digital Content Distribution System Based on the Public Key and the Hierarchical Web Caching Structure. - Yun Ji Na; Il Seok Ko; Gun Heui Han (NPC, 2005)

Distribution of digital contents based on public key considering execution speed and security. - Il Seok Ko; Choon Seong Leem; Yun Ji Na; Chui Young Yoon (Inf. Sci., 2005)

A Performance Improvement of Web Service System Based on the Probability Distribution Characteristics. - Il Seok Ko; Yun Ji Na (GPC, 2006)

A Design of the Flexible Mobile Agents Based on Web. - Yun Ji Na; Il Seok Ko; Gun Heui Han (ICCSA (5), 2006)

A Sales Agent Using Case-Based Reasoning and Rule-Based Reasoning for E-Commerce System. - Yun Ji Na; Il Seok Ko; Jong Min Kwak (ICCSA (5), 2006)

A Vulnerability Assessment Tool Based on OVAL in System Block Model. - Geuk Lee; Il Seok Ko; Tai-Hoon Kim (ICIC (1), 2006)

A Design of Hybrid Mobile Multimedia Game Content. - Il Seok Ko; Yun Ji Na (KES (3), 2006)

A Study on a Design of Efficient Electronic Commerce System. - Yun Ji Na; Il Seok Ko; Jong Min Kwak (KES (3), 2006)

ACASH: an adaptive web caching method based on the heterogeneity of web object and reference characteristics. - Yun Ji Na; Choon Seong Leem; Il Seok Ko (Inf. Sci., 2006)

A Study on the Aspects of Successful Business Intelligence System Development. - Il Seok Ko; Sarvar R. Abdullaev (International Conference on Computational Science (4), 2007)

A Study on Phonemic Analysis for the Recognition of Korean Speech. - Jeong-Young Song; Min Wook Kil; Il Seok Ko (International Conference on Computational Science (4), 2007)

A User Interface for Controlling Information Appliances in Smart Homes. - Seong Joon Lee; Il Seok Ko; Min Wook Kil (KES-AMSTA, 2007)

A Design of the Simulator for Web-Based Load Balancing. - Yun Ji Na; Il Seok Ko (KES-AMSTA, 2007)

Strategy of Positioning for LBS on U-Campus. - Jaegeol Yim; Il Seok Ko; Jaesu Do (KES-AMSTA, 2007)

A Study on the Accelerator for Efficient Distribution of the Multimedia Content. - Il Seok Ko (MMM (2), 2007)

A Study on Analysis of the Web-Object Reference Characteristics on the Web System. - Il Seok Ko (MMM (2), 2007)

Design and Performance Analysis of the Web Caching Algorithm for Performance Improvement of the Response Speed. - Yun Ji Na; Il Seok Ko (MMM (2), 2007)

A Study on Successful Business Intelligence Systems in Practice. - Sarvar R. Abdullaev; Il Seok Ko (J. Convergence Inf. Technol., 2007)

Analysis and Implementation of M-commerce in Education for Developing Countries (Uzbekistan case). - Olga Yugay; Aleksey Semyonov; Il Seok Ko; Sarvar R. Abdullaev (J. Convergence Inf. Technol., 2007)

A Solution of Real-World Ocst Problems with a New Tree Encoding-Based Genetic Algorithm. - Jong Ryul Kim; Kyeong-Hoon Do; Wan-Young Chung; Il Seok Ko (Cybern. Syst., 2008)

An Intelligent Security Agent for a Reliable Cipher System Using Pingpong. - Hoon-Jae Lee 001; Il Seok Ko (Cybern. Syst., 2008)

A Study on Web Caching based on Reference Characteristics of Web Objects. - Yun Ji Na; Sarvar R. Abdullaev; Il Seok Ko (J. Convergence Inf. Technol., 2008)

SHAMAN Research and Implementation of an Electronic Medical Records System. - Yerbol Nisanbayev; Il Seok Ko; Olga Yugay (J. Convergence Inf. Technol., 2008)

Implementation of a Prototype Positioning System for LBS on U-campus. - Jaegeol Yim; Il Seok Ko; Jaesu Do; Jaehun Joo; Seunghwan Jeong (J. Univers. Comput. Sci., 2008)

A multilayered digital content distribution using a group-key based on web. - Yun Ji Na; Il Seok Ko; Shiying Xu (Future Gener. Comput. Syst., 2009)