Nearest Neighbor Queries for R-Trees: Why Not Bottom-Up? - MoonBae Song; KwangJin Park; SeokJin Im; Ki-Sik Kong (DASFAA, 2006)

Spatial Indexing Based on the Semi-approximation Scheme of MBR. - Jongwan Kim; SeokJin Im; Sang-Won Kang; Chong-Sun Hwang (ICCSA (2), 2006)

Towards Real-Time Processing of Monitoring Continuous k-Nearest Neighbor Queries. - HaRim Jung; Sang-Won Kang; MoonBae Song; SeokJin Im; Jongwan Kim; Chong-Sun Hwang (ISPA Workshops, 2006)

Cell-Based Distributed Index for Range Query Processing in Wireless Data Broadcast Systems. - SeokJin Im; MoonBae Song; Jongwan Kim; Sang-Won Kang; Chong-Sun Hwang; SeongHoon Lee (KES (1), 2006)

Considering a Semantic Prefetching Scheme for Cache Management in Location-Based Services. - Sang-Won Kang; SeokJin Im; Jongwan Kim; SeongHoon Lee; Chong-Sun Hwang (KES (1), 2006)

MBR Compression in Spatial Databases Using Semi-Approximation Scheme. - Jongwan Kim; SeokJin Im; Sang-Won Kang; SeongHoon Lee; Chong-Sun Hwang (KES (1), 2006)

An error-resilient cell-based distributed index for location-based wireless broadcast services. - SeokJin Im; MoonBae Song; Chong-Sun Hwang (MobiDE, 2006)

Spatial Index Compression for Location-Based Services Based on a MBR Semi-approximation Scheme. - Jongwan Kim; SeokJin Im; Sang-Won Kang; Chong-Sun Hwang (WAIM, 2006)

Energy Conserving Multiple Data Access in Wireless Data Broadcast Environments. - SeokJin Im; MoonBae Song; Sang-Won Kang; Jongwan Kim; Chong-Sun Hwang; SangKeun Lee 001 (IEICE Trans. Commun., 2007)

SQR-tree: A Spatial Index Using Semi-quantized MBR Comprression Scheme in R-tree. - Jongwan Kim; SeokJin Im; Sang-Won Kang; Chong-Sun Hwang; SangKeun Lee 001 (J. Inf. Sci. Eng., 2007)

A Multi-level Grid-Based Air Indexing Scheme for Window Query Processing in Wireless Data Broadcast Environments. - SeokJin Im; JinTak Choi; Seiseung Park; Jinsong Ouyang (FGCN (2), 2008)

A Cell-Based Hybrid Indexing Scheme for Energy Conserving k Nearest Neighbor Search on Air. - SeokJin Im; Hee Yong Youn (IEICE Trans. Commun., 2008)

Description-Based Semantic Prefetching Scheme for Data Management in Location-Based Services. - Sang-Won Kang; Joon-Min Gil; Jongwan Kim; SeokJin Im; SangKeun Lee 001 (J. Inf. Sci. Eng., 2008)

A novel air indexing scheme for window query in non-flat wireless spatial data broadcast. - SeokJin Im; Hee Yong Youn; JinTak Choi; Jinsong Ouyang (J. Commun. Networks, 2011)

MLAIN: Multi-leveled air indexing scheme in non-flat wireless data broadcast for efficient window query processing. - SeokJin Im; JinTak Choi (Comput. Math. Appl., 2012)

Quick Data Access on Multiple Channels in Non-flat Wireless Spatial Data Broadcasting. - SeokJin Im; JinTak Choi (IEICE Trans. Commun., 2012)

A Two-Tier Spatial Index for Non-flat Spatial Data Broadcasting on Air. - SeokJin Im; HeeJoung Hwang (IEICE Trans. Commun., 2014)

A Distributed Air Index Based on Maximum Boundary Rectangle over Grid-Cells for Wireless Non-Flat Spatial Data Broadcast. - SeokJin Im; JinTak Choi (Sensors, 2014)

An Index Based on Irregular Identifier Space Partition for Quick Multiple Data Access in Wireless Data Broadcasting. - SeokJin Im; HeeJoung Hwang (IEICE Trans. Inf. Syst., 2016)

Quick Window Query Processing Using a Non-Uniform Cell-Based Index in Wireless Data Broadcast Environment. - SeokJin Im; HeeJoung Hwang (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2017)