• Proceedings of the IEEK Conference
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• 2000.07a
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• pp.35-38
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• 2000

Low bit rate image/video coding is essential for many visual communication applications. When bit rates become low, most compression algorithms yield visually blocking artifacts that highly degrade the perceptual quality, and post-processing approaches provide one attractive solution. In this paper, we provide simple and very efficient blocking artifacts reduction method using constrained random value addition. Our method is simple enough to be used for real-time post-processing of video.

• 한국정보디스플레이학회:학술대회논문집
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• 2007.08a
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• pp.940-943
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• 2007

The objective of the research presented in this paper is to design a highly efficient LCD-TV backlight unit (BLU) which minimizes lamp count without light leakage from the BLU. A new optical plate helps to successfully distribute spatial luminance in a 46inch LCD-BLU consisting of only 20 CCFLs.

• 한국정보디스플레이학회:학술대회논문집
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• 2007.08a
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• pp.648-650
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• 2007

We demonstrate highly efficient White Polymer Electrophosphorescent Light-emitting Diode using newly developed green and red light emitting heteroleptic iridium complex, Ir-(pq)2tpy, and blue light emitting fluorescent dopant, BczVBi. The best luminous efficiency reached 28cd/A with maximum luminance of 87000cd/m2. The scheme for determining optimum device architecture and dopant concentrations were constructed.

• Journal of the Korean Chemical Society
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• v.62 no.4
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• pp.275-278
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• 2018

The $VCl_3$/In system was found to be a new protocol for debromination of a variety of vic-dibromides to the corresponding alkenes in high yields with short reaction times under mild conditions. This new methodology is highly chemoselective, tolerating several functional groups such as chloro, bromo, fluoro, keto, ester, carboxyl, and methoxy groups.

• Bulletin of the Korean Chemical Society
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• v.30 no.3
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• pp.745-748
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• 2009

• Bulletin of the Korean Chemical Society
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• v.25 no.11
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• pp.1671-1675
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• 2004

A simple method for simultaneous recovery and reuse of $OsO_4$ and alkaloid ligand in the asymmetric dihydroxylation of olefins has been developed by using macroporous alkaloid resins bearing residual vinyl groups.

• Bulletin of the Korean Chemical Society
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• v.27 no.1
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• pp.130-132
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• 2006

• Korean Journal of Bronchoesophagology
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• v.16 no.2
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• pp.91-96
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• 2010

Transnasal esophagoscopy allows. the upper aerodigestive tract, from the nasal cavity to the gastric cardia to be examined in the outpatients department. It is well tolerated by patient with topical anesthesia alone and no sedation or patient preparation is required. The technique is easily learned and performed in the otolaryngologist and highly cost efficient. It is a useful tool for accurate diagnosis and can be used in a variety of office-based procedures.

• 유체기계공업학회:학술대회논문집
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• 2003.12a
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• pp.482-486
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• 2003

A high-efficiency turbo steam compressor has been successfully developed for the MVR desalination system, first one in Korea. The state-of-the-art design methods using real gas properties were applied to get all the aerodynamic design results. Bull and pinion gear trains, tilting-pad bearings and investment cast impellers were developed also to be integrated into the integral gear-driven turbo steam compressor. System tests show highly efficient performance.

• Journal of the Korean Society for Precision Engineering
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• v.21 no.11
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• pp.110-116
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• 2004

In this paper, a decentralized adaptive controller is proposed to control robot manipulators which are governed by highly nonlinear dynamic equations. The controller is computationally efficient since it does not require mathematical model or parameter values of robot manipulators. The stability of the manipulators with the controller is proved by Lyapunov theory. The results of numerical simulations show that the system is stable, and has excellent trajectory tracking performance.