파랑ㆍ흐름 공존장에서의 철도차량 인공어초의 수리학적 특성

손병규(Byung-Kyu Sohn),이병호(Byung-Ho Yi),윤한삼(Han-Sam Yoon) 한국마린엔지니어링학회 2011 한국마린엔지니어링학회지 Vol.35 No.1

기능성블록을 이용한 잠제의 수리학적 특성

손병규(BYUNG-KYU SOHN) 한국해양공학회 2007 韓國海洋工學會誌 Vol.21 No.6

This paper presents the design of a submerged breakwater, which functions as an eco-structure in a marine environment. Newly patented blocks were used in the submerged breakwater to both make it stable and provide an inhabitable space for fish. To investigate the wave transmission of the proposed submerged breakwater, parametric studies were conducted through two-dimensional hydrauic tests, which were carried out at the National Fisheries Research and Development Institute (NFRDI) in South Korea. Those parameters are relative crest width (B/L), wave steepness (H/L), relative crest depth (hB/H) and submerged breakwater configuration. The hydranulic experimental results can be used to predict the performance of the proposed submerged breakwater covered with the multi-function blocks.

패조류용 어초의 안정성에 관한 실험적 연구

손병규(BYUNG-KYU SOHN) 한국해양공학회 2007 韓國海洋工學會誌 Vol.21 No.6

The purpose of this study was to investigate the stability of the arched and fan types of artificial reefs, which provide habitatsfor shellfish and seaweed. According to the Froude similitude, paraneters affecting the stability of the artificial reefs were analytically, experimentally studied. First, the design parameters of the artificial reefs in wave and current fields were presented. Then, using dimensionless parameters, such as the surf similarity parameter and water partide speed, the stability of the arched and fan types ofartificial reefs was investigated. From the hydraulic experiments, it is shown that the stability heavily depends on the way the artificial reefs are installed. Therefore, the installation of the artificial reefs on the surf zone should be carefully executed.

주전해역의 파랑의 통계적 변동 특성

손병규(BYUNG-KYU SOHN),류청로(CHEONG-RO RYU) 한국해양공학회 2001 韓國海洋工學會誌 Vol.15 No.3

After using the filtering method, wave parameters are calculated by the spectral analysis and wave by wave analysis. Extreme environments and higher wave characteristics in the Chujeon Sea are analyzed using the observed wave data. Higher wave has been intensely emphasized as an important environmental force parameter in several recent research works. The aims of this study are to summarize the distribution of extreme environment for wind waves, and to find occurrence probability of higher wave in Chujeon Sea. Ocean wave statistics varying with sea state are found to respond linearly to the spectral peakedness parameter Qp, mean run-length and Ursell number. Although the spreading of the field results is large, it may be concluded that the tendency of wave group formation depends on the spectral peakedness parameter Qp. Extreme wave is estimated to apply various model distribution functions by using the monthly maximum significant wave parameters which can be used to the design and analysis of coastal structures.

녹색구매의 구축전략

손병규(Byung-Kyu, Sohn) 한국구매조달학회 2010 한국구매조달학회지 Vol.9 No.2

지구의 온난화와 생태시스템의 불균형에 대해 국제적으로 관심을 갖기 시작한지 30년이 넘으면서 기업의 지속가능경영은 이제 선택사항이 아니라 필수사항이 되었다. 지속가능경영의 중요한 축을 구성하는 구매기능에서의 녹색구매가 많은 관심을 받아왔고 많은 기업들이 실천을 표방하고 있지만, 녹색구매의 정의와 목표, 그리고 그 추진전략에 대해 아직도 명확하지 못하고 혼란스러워하고 있는 것이 현실이다. 본 논문에서는 이러한 차이를 해소하기 위하여 녹색구매의 정의를 정리하였고, 지속가능경영의 목표를 구매의 관점에서 다시 해석한 목표를 녹색구매의 목표로 정립하였다. 그리고 녹색구매의 추진전략으로서 기업의 내부추진전략과 외부추진전략으로 구분하여 제시하였는데, 협력업체를 대상으로 녹색구매를 실천하기 위해서는 기업 내부적으로 환경경영이 정착되는 것이 중요함을 강조하는 내부추진전략을 소개하였고, 외부추진전략으로 환경성과의 개선을 위한 협력업체와의 협력분야와 그 방향을 제시하였고, 또한 녹색구매의 실행을 위한 단계별 접근법을 제시하였다. It has been more than 30 years since the global society showed its deep concerns about global warming and ecosystem being unbalanced. Its historical progress during the period has made the sustainability management a must instead of an option. Green purchasing, which is the main pillar for sustainability, has received a great attention with many firms announcing its implementation. However, the reality is that most firms do not have clear understanding and definition for green purchasing and its goals. Therefore, this research is purposed to resolve the problems. Firstly, this research provides a clear definition of green purchasing based on extensive review of available various definitions and a new set of goals of purchasing including the sustainable perspective. Next is presented the strategy for establishing green purchasing, emphasizing the internal strategy before pursuing external strategy with suppliers. For the external strategy, the step-by-step implementation approach is introduced.

피라미드형 패조류용 어초의 수리학적 특성

손병규(Byung-Kyu Sohn),이정우(Jeong-Woo Lee),이병호(Byung-Ho Yi),윤한삼(Han-Sam Yoon) 한국마린엔지니어링학회 2010 한국마린엔지니어링학회지 Vol.34 No.5

환경경영시스템의 개념적 구조에 대한 실증적 분석

손병규(Sohn, Byung-Kyu),한지영(Han, Ji-Young) 대한경영학회 2013 大韓經營學會誌 Vol.26 No.1

다방향불규칙파 조파수조의 조파특성에 관한 연구

손병규(Byung Kyu Sohn),류청로(Cheong Ro Ryu) 한국수산과학회 2001 한국수산과학회지 Vol.34 No.6

다방향불규칙파 조파장치를 이용하여 평면수조내의 발생파의 특성과 목표스팩트럼의 재현성 및 대표파의 통계적인 안정과 선형적인 관계를 검토하여 유효조파영역 및 모형구조물의 설치대상 영역을 검정하였다. 주요한 결과를 요약하면 다음과 같다. 다방향불규칙파에 의한 발생파의 특성과 목표스팩트럼의 재현성은 양호한 결과를 얻었으며, 이들 결과로부터 유효조파영역 및 대표적인 파랑의 재현성이 높은 영역을 설정할 수 있었다. 유효조파영역에서 얻어진 관측자료인 대표파는 통계적으로 안정하였으며, spectrum peakedness parameter Q_p와 평균 run-length, Q_p와 U_r로서 대표파의 선형적인 관계를 나타낼 수 있었다. It is of great importance to represent the directional ocean waves in a laboratory basin for hydraulic model tests. The directional ocean waves can be expressed as a linear superposition of a large number of component waves with different frequencies and propagating directions. The aim of the study is to check the wave generating characteristics by serpent-type wave generating system in PKNU (Pukyong National University) which is composed of 10 piston-type wave generators. In the experiment, spatial variation of irregular wave heights and propagating angles are measured in the multi-directional wave maker basin. Target wave directional spectrum is reproduced in the area of multi-directional wave maker basin. The directional spreading of the generated waves varied spacially in the basin. They differed from target spectrum as the measurement point becomes far from the center line normal to the generator face. The effective generation area where that target can be reproduced is limited to the triangular area attached the generator face. According to the results, it is emphasized that the effective experiment area in the basin considered wave generator characteristics should be determined in consideration of experimental conditions including structural shapes, water depth, wave directionality etc.

피라미드형 패조류용 어초의 수리학적 특성

손병규(Byung-Kyu Sohn),이정우(Jeong-Woo Lee),이병호(Byung-Ho Yi),윤한삼(Han-Sam Yoon) 한국마린엔지니어링학회 2010 한국마린엔지니어링학회지 Vol.34 No.4

본 연구에서는 2종류의 피라미드형 패조류용 인공어초의 안정성 평가를 위해 Froude 상사법칙을 적용한 고정상 및 이동상 수리모형실험을 수행하였으며, 현장 설계외력(파랑, 흐름 등) 조건에 따라 이론적/실험적 검토를 하였다. 실험 결과는 파랑-흐름 공존장에서 어초의 안정성에 영향을 미치는 무차원영향인자(설계파라메타)인 쇄파상사지수, 수립자속도, 파압 등을 사용하여 상호관련성을 검토하였다. 그 실험결과, 어초의 활동을 일으키는 한계조건은 고정상 실험에서는 쇄파상사지수에 따라서 무차원 최대수립자속도가 약 0.4 이상일 때, 이동상 실험에서는 무차원 파압에 따라서 상대수심이 약 0.11 이하일 때 나타났다. 또한 상대수심에 따른 수평 및 연직 파압은 상대수심이 증감함에 따라서 선형적으로 감소하는 경향을 나타내었다. This study conducted hydraulic testing to assess the stability of two types of pyramid-shaped artificial reefs (ARs) constructed to promote the growth of shellfish and seaweed. Previous theoretical and hydraulic experimental studies have clearly demonstrated Froude similitude. The results of this study revealed that some dimensionless design parameters affected the stability of both types of artificial reefs under various wave and current field conditions (e.g., surf similarity parameters, water particle velocity, wave pressure). In the fixed bed condition, the dimensionless water particle velocity based on the surf similarity parameter was large (about 0.4), and in the moveable bed condition, the relative water depth based on the dimensionless wave pressure was low (about 0.11). In addition, horizontal wave pressure and uplift pressure varied by relative water depth, demonstrating the tendency for wave pressure to decrease linearly with increased relative depth. These findings indicate that the development of more stable design technology forartificial reefs should be based on long-term data and additional study of sliding due to wave action. The findings also highlight the importance of hydraulic experiments in solving problems that have emerged in the design and construction of artificial reefs.

경사식 방파제의 형상에 따른 월파량 및 반사율 실험 연구

손병규(BYUNG-KYU SOHN),김홍진(HONG-JIN KIM),안희춘(HEUI-CHUN AN) 한국해양공학회 2005 韓國海洋工學會誌 Vol.19 No.2

All of the design criterion are not only formulated by an internal study, concerning the design of maritime structures, but also by the guarantee that internal design technology is essential, at least according to theoretical and experimental studies. Furthermore, the basic data, which is necessary for the development of a more stable design of breakwater structures, should be ensured, according to current research and analysis of damage created by water waves.<br/> According to the necessity to solve the problems that occur in the design and construction of ocean structures, until now, it is recognized that the hydraulic experiments are important. This paper provides the design of structures to decrease the energy created by waves. Suggestions to make contributions to the development of ocean/fisheries technology are also discussed. It is better to use S-type coastal structures/breakwaters than to use uniform type breakwaters, concerning stability, reflection, and overtopping.