• Clean Technology
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• v.12 no.2
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• pp.62-66
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• 2006

Poly($\small{L}$-Lactide)(PLLA) was prepared by a ring-opening polymerization of $\small{L}$-Lactide with various polydimethylsiloxane(PDMS) based copolymers as a stabilizer in supercritical carbon dioxide($scCO_2$). The block copolymeric stabilizers were synthesized by group transfer polymerization (GTP) by using PDMS macroinitiator. PLLA was found to be produced with fairly low molecular weight distribution as confirmed by gel permeation chromatography(GPC) analysis. Scanning electron microscopy (SEM) results showed that sub-micron size Poly($\small{L}$-lactide)(PLLA) particles were formed by suspension polymerization.

• Proceedings of the Korea Contents Association Conference
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• 2006.11a
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• pp.499-502
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• 2006

H.264/MPEG4 Advanced Video coding joint standard needs deblocking filter of decoder. We propose a better deblocking algorithm ensuring picture quality even if it is low bit-rate and bandwidth in MPEG-4 video. The complexity diminishes in proposed deblocking algorithm because it uses only simple shift, addition and comparison. We handle dividing into complexity area, medium area and simple area after counting boundary intensity of mask block to identify presence of block effects. As a result of experiment, we make certain of that block effects reduces in proposed deblocking algorithm.

• 한국HCI학회:학술대회논문집
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• 2009.02a
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• pp.1293-1300
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• 2009

The recent advent of the digital age changes socio-cultural environments. Since the value of technology is moving to the value of culture, new research areas which are the convergence of emotion, knowledge, and technology. These trends enlarge interactive digital multimedia in daily human life. One of them, book, also envolves new concept. Over electronic book, we present digilog book which is fusion of old-media and digital media. In this paper, we define digilog book as a new conceptual media and discuss it in details. Several digilog books are showed as an example and its authoring tool, ARtalet is introduced.

• The KIPS Transactions:PartA
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• v.15A no.3
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• pp.135-140
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• 2008

This paper describes a high-speed CMOS demultiplexer using redundant multi-valued logic (RMVL). The proposed circuit receives serial binary data and is converted to parallel redundant multi-valued data using RMVL. The converted data are reconverted to parallel binary data. By the redundant multi-valued data conversion, the RMVL makes it possible to achieve higher operating speeds than that of a conventional binary logic. The implemented demultiplexer consists of eight integrators. Each integrator is composed of an accumulator, a window comparator, a decoder and a D flip flop. The demultiplexer is designed with TSMC $0.18{\mu}m$ standard CMOS process. The validity and effectiveness are verified through the HSPICE simulation. The demultiplexer is achieved the maximum data rate of 20 Gb/s and the average power consumption of 95.85 mW.

• Journal of the Korean Applied Science and Technology
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• v.35 no.1
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• pp.20-35
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• 2018

This study was conducted to investigate the relationship among debriefing of nursing simulation based education and vocational basic competencies and attempts have been made to provide basic data necessary for improving vocational basic competencies in nursing students. Participants were 203 4th-year nursing students at K college in J province. Debriefing of nursing simulation based education was positively correlated with vocational basic competencies. The factor influencing vocational basic competencies of nursing students was provokes engaging discussions. Based on these findings, programs that develop discussion activity of nursing simulation based education are necessary for nursing students to promote vocational basic competencies.

• Applied Chemistry for Engineering
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• v.5 no.3
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• pp.413-418
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• 1994

The synthetic steps of sodium(2-(2, 6-dichlorophenyl)amino)phenylacetate were reduced and increased the yield in each steps. The synthetic process was composed to four steps and 2, 6-dichloroaniline and per catalyst in three lots in 80% yield. The steps of acylation and Friedel-Craft reaction were simplified successfully. The final product, diclofenac was obtained in 97% yield by hydrolyzing 1-(2,6-dichlorophenyl)-2-indolinone which was gained in third step with Claisen-solution.

• The Journal of Society for e-Business Studies
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• v.26 no.2
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• pp.143-155
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• 2021

In this study, we focused on the decenterization, innovation, interoperability, and transparency that blockchain technology brings in the financial services sector. Decentralized financial services powered by blockchain technology can leverage virtual assets to expand the scope of financial services and create new business opportunities while encouraging innovation in financial services. Based on the understanding of the concept of De-Fi, we will look at the need for technology and major use cases, and look at future challenges. This will help us understand the vision of developing new technologies for innovation, while identifying the potential as new areas of fintech services.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.04a
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• pp.526-529
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• 2011

최근 각광 받고 있는 멀티 터치 인터랙션 시스템에서 기존의 디스플레이 방식인 벽면 디스플레이 방식의 네모난 형태의 디스플레이 방식이 아닌 볼록형(Convex) 불규칙 디스플레이 방식으로 산 모양의 디오라마 형태의 디스플레이에서 멀티 터치 인터랙션이 가능한 시스템을 제안한다. 먼저 볼록형 불규칙 표면의 산 디오라마를 제작을 하고 후면 투영 방식으로 프로젝터 영상을 산 디오라마 표면을 대상으로 디스플레이 하고 영상 분석 모듈을 통하여 터치 인터랙션 좌표 정보를 분석한다. 분석된 터치 인터랙션 좌표는 3D 좌표로 변환하고 디스플레이 모듈에 보내면 디스플레이 모듈에서는 인터랙션 메타포로 분석하고 결과를 콘텐츠에 실행시킴으로써 볼록형 불규칙 표면의 산 디오라마에서 멀티 터치 인터랙션에 따른 결과를 사용자가 체감 할 수 있도록 하였다. 본 시스템은 향후 다양한 디오라마 형태로 제작하여 목적에 맞는 전시 시스템으로의 디바이스나 체감형 아케이드 게임 디바이스로 활용이 가능할 것이다.

• KOREAN POULTRY JOURNAL
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• v.45 no.11
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• pp.112-115
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• 2013

1998년 인터베트코리아(주)가 설립되었고 2007년 인터베트와 쉐링푸라우 동물약품 사업부가 통합되면서 이후 2009년 MSD(Merck)와 합병하게 되었다. 3개 회사의 기원을 가진 MSD, 인터베트, 쉐링푸라우 동물약품 역사는 약 60년 전으로 거슬러 올라간다. 3개 회사는 각각 인간과 동물을 둘러싼 환경에서 생명을 위협할 수 있는 질병을 치료하기 위해 전문 지식과 확고한 의지를 가지고 새롭게 한국엠에스디동물약품 주식회사를 공식적으로 출범하였다. 새로운 비젼을 가지고 출발하는 한국엠에스디동물약품 주식회사를 찾아가 보았다.

• Electronics and Telecommunications Trends
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• v.32 no.4
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• pp.31-39
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• 2017

뇌에 관한 연구는 상당히 오랫동안 이루어져 왔음에도, 뇌는 여전히 미지의 세계로 남아 있다. 미국에서 2013년 Brain Initiative를 발표한 이후 뇌를 이해하기 위한 연구가 활발히 이루어져 왔다. 최근에는 인간의 생각을 뇌의 활성 패턴 분석을 통해 읽어 내려고 시도하였으며, 심지어는 잠자는 동안 꾸는 꿈을 뇌 활성 패턴 측정을 통해 읽어 내려는 시도도 이루어졌다. 본고에서는 브레인 디코딩을 위해 어떤 기술들이 필요하며, 현재 어떤 연구들이 이루어져 왔는지에 대하여 살펴보고, 향후 브레인 디코딩 기술이 어떻게 발전할 것인지 전망해 본다.