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최석진 ( Sokjin Choi ),황성일 ( Sungil Hwang ) 한국수산과학회 2023 한국수산과학회지 Vol.56 No.6
This study investigated the optical characterization of water types based on Jerlov’s classification, employing the CIE colorimetric system. Digital visualization techniques were applied to articulate watercolor manifestations intuitively. The L* luminance parameter exhibited a discernible reduction from optical water type I III and from type 1 to 9, registering a range between 66 and 84. Analysis of color attributes in each optical water type revealed that in the transition from type I to III, the color a* values spanned from -7.43 to -8.32, while color b* values ranged from -2.97 to -3.33. a* values for optical water types 1 to 9 varied between -6.28 and -10.50, with corresponding b* values ranging from -2.51 to -4.20. Consequently, optical water type I, IA, IB, II, and III were discretely categorized by independent color values, as were optical water types 1, 3, 5, 7, and 9. The digitized representation of watercolor in this inquiry facilitated comprehensive information asso,o;atopm. The study highlights limitations in Jerlov’s classification for representing watercolors in different ocean conditions. It emphasized the need to collect color data from various marine areas and formulate a novel color standard or method for comparing colors.
강정훈(Jeonghoon Kang),유준재(JunJae Yoo),윤명현(Myunghyun Yoon),이명수(Myungsoo Lee),임호정(Hojung Lim),이민구(Mingoo Lee),황성일(Sungil Hwang) 대한전기학회 2006 정보 및 제어 심포지엄 논문집 Vol.2006 No.1
This paper presents an analysis architecture of embedded operating systems for wireless sensor network. Wireless multi-hop sensor networks use battery-operated computing and sensing device. We expect sensor networks to be deployed in an ad hoc fashion, with very high energy constraints. These characteristics of multi-hop wireless sensor networks and applications motivate an operating system that is different from traditional embedded operating system. These days new wireless sensor network embedded operating system come out with some advances compared with previous ones. The analysis is focusing on understanding differences of dominant wireless sensor network OS, such as TinyOS 2.0 with TinyOS l.x.
황성일,조남준,송병석 국민대학교 생산기술연구소 2004 공학기술논문집 Vol.27 No.-
본 연구에서는 케이싱을 영구부재로 사용함으로써 기존의 현장타설말뚝과 비교하여 시공성, 품질균일성, 경제성, 내구성 등을 검토한다. 연구결과 케이싱을 영구부재로 사용하는 경우, 케이싱의 재사용을 위한 인발작업이 불필요하게 되고, 말뚝길이전체에 대하여 케이싱을 사용한다면 R.C.D공법에서 적용하는 슬러리공벽보호공정이 불필요하므로 시공성이 향상되는 것으로 판단된다. 케이싱을 영구부재로 사용하는 현장타설말뚝의 지지력은 일반 깊은 기초의 지지력을 산정하는 방법과 동일하게 구해질 수 있다. 대구경의 영구케이싱이 있는 현장타설말뚝을 시공한다면 공내에 간단한 정비와 인력을 투입해서 선단부를 그라우팅방법 등으로 강화시킴으로써 선단지지력을 효과적으로 증대시킬 수 있을 것이다. 또한 케이싱 내부로부터 미리제작한 구멍을 통하여 그라우팅, 전단키 등을 주입 또는 압입함으로써 주면마찰력도 크게 향상될 수 있을 것으로 사료된다.
조남준,황성일,김학승 국민대학교 생산기술연구소 2004 공학기술논문집 Vol.27 No.-
In recent years slope failure due to heavy rainfalls or local downpours usually accompanied by typhoons has increasingly occurred in Korea. Also, the damages caused by slope failure have a tendency to be more disastrous than before. This study has been conducted to prepare an early warning system for slope failure. The data on the variations of slope conditions measured by an automatic in-situ measurement system and then transmitted to the central analysis system by using an internet. The most important variables can be back-calculated in the central system and compared with the values for the first and second management criteria. These management criteria should be modified and corrected continuously in the future by accumulated data and knowledge related to the early warning system for slope failure.