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870 results on '"Kim, Jaehong"'

113. NeuroScaler

Author

Yeo, Hyunho, primary, Lim, Hwijoon, additional, Kim, Jaehong, additional, Jung, Youngmok, additional, Ye, Juncheol, additional, and Han, Dongsu, additional

Published
2022
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119. Cost-Effective IDS Operating Scheme in MANETs

Author

Jeong, Youngok, Han, Younggoo, Kim, Hyunwoo, Shim, Woochul, Kim, Jaehong, Kim, Sehun, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Rangan, C. Pandu, editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Lee, Jae Kwang, editor, Yi, Okyeon, editor, and Yung, Moti, editor

Published
2007
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120. Application of cement-free media binder for the deep mixing method of CMD–SOIL.

Author

Kim, Jaehong, Seo, Se-Gwan, Yoon, Seong-Jin, and Cho, Dae-Sung

Subjects
*SLAG cement, *POROUS materials, *CEMENT
Abstract

A cement-free eco-friendly porous media binder was developed as a cement replacement material (CRM) to be applied in the deep mixing method (DMM) for CMD–SOIL. We measured compression strengths for various mixtures and found that the compression strength of CMD–SOIL was 1.00–1.08 times higher than that of blast furnace slag cement (BFSC) and 1.410–1.945 times higher than the reference strength (2.0 MPa), depending on the moisture content, dosage, and water/binder ratio (W/B). The strength increment ratio (1.730) was slightly lower than that of BFSC (1.780), thereby proving its merit over BFSC as a binder for the DMM. [ABSTRACT FROM AUTHOR]

Published
2023
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122. Analysis and Elimination of Speed Measurement Ripple in Sinusoidal Coded Gearwheel Encoder for Spindle Motor Drive

Author

Hwang, Yunkyung and Kim, Jaehong

Abstract

The gearwheel encoder with a magnetoresistive (MR) sensor is robust, simple, and widely used in high-speed industrial motor drives. Moreover, a high-precision rotor position detection is possible with the gearwheel encoder due to its large number of output pulses per revolution. The MR sensor outputs two sinusoidal signals that are 90 degrees apart, the period of which matches with one tooth of the gearwheel. However, these output signals are not perfectly sinusoidal because the MR sensor is manually mounted, and the magnitudes of these signals depend on the distance between the MR material and gearwheel. This slight imperfection in the output signals provokes large speed ripples in the speed measurement. This study analyzed the speed measurement ripples, and an effective ripple-elimination method was devised based on the results of the analysis. Ripple components caused by each signal error were calculated from the error signal models, and exact ripple frequencies were extracted. From the calculation results, a frequency adaptive series notch filter algorithm was designed. The simulation and experimental results demonstrated the effectiveness of the analysis and proposed approach. It is obviously shown through the experimental results that the speed measurement ripple is almost eliminated with the proposed method, and, thus, the analysis is valid.

Published
2023
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123. Automated Teleoperation of Web-Based Devices Using Semantic Web Services

Author

Ha, Young-guk, Kim, Jaehong, Jang, Minsu, Sohn, Joo-chan, Yoon, Hyunsoo, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Carbonell, Jaime G., editor, Siekmann, Jörg, editor, Ali, Moonis, editor, and Esposito, Floriana, editor

Published
2005
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124. MoA: OWL Ontology Merging and Alignment Tool for the Semantic Web

Author

Kim, Jaehong, Jang, Minsu, Ha, Young-Guk, Sohn, Joo-Chan, Lee, Sang Jo, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Carbonell, Jaime G., editor, Siekmann, Jörg, editor, Ali, Moonis, editor, and Esposito, Floriana, editor

Published
2005
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