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비단가리비, Chlamys farreri 수하양식에서 수용밀도에 따른 성장과 생존
박광재,윤상필,박영제,송홍인,Park, Kwang-Jae,Yoon, Sang-Pil,Park, Young-Je,Song, Hong-In 한국패류학회 2012 The Korean Journal of Malacology Vol.28 No.1
2002년 6월부터 2003년 10월까지 충남 태안군 안면읍 내파수도 연안의 수하식 양식장에서 비단가리비 치패 (평균 각고 $32.97{\pm}6.21mm$, 전중량 $5.63{\pm}3.86g$) 를 채롱에 수용하여 밀도에 따른 성장과 생존을 연구하였다. 비단가리비는 주로 한국의 서해안과 중국의 북부 연안에 자연적으로 서식하는 종이다. 조사해역의 표층 수온은 $4.3-25.3^{\circ}C$, 염분은 29.2-32.1 psu, 용존산소는 5.32-7.51 mg/L이었고, pH는 7.84-8.12로 나타났다. 실험을 시작할 때 채롱 당 수용밀도는 20, 30, 40, 50 개체로 하였다. 실험을 시작하여 16개월이 경과한 후의 평균 각고는 64.35-76.23 mm였고, 전중량은 41.53-64.85 g, 생존율은 82-100%로 나타났다. 비단가리비의 성장률은 수용밀도와 역상관 관계를 가지고 있었다. 각고와 전 중량의 성장은 수온이 하강하면서 감소하였다. 비단가리비의 폐사는 대부분 3-4월과 9-10월에 나타났다. 밀도에 따른 생존율은 밀도가 증가함에 따라 감소하였으며 20마리 실험구에서 가장 높게 나타났다. We studied that the effect of stocking density on growth and survival rate of the scallop, Chlamys farreri (initial shell height 32.97 mm and total weight 5.63 g) from June 2002 to October 2003 in the west coast of Korea. C. farreri is usually the west coast of Korea and northern China in the natural habitat of the coastal species. Range of surface water temperature in the study area was $4.3^{\circ}C$ to $25.3^{\circ}C$, salinity 29.2 psu to 32.1 psu, dissolved oxygen 5.32 mg/L to 7.51 mg/L and pH was 7.84 to 8.12, respectively. The stocking densities were 20, 30, 40 and 50 individuals per a compartment of suspension cage in culture beginning. After 16 months from initiation, ranges of shell height and mean total weight were from 64.35 mm to 76.23 mm and from 41.53 g to 64.85 g. The survival rate was from 82% to 100%. The growth rate of the scallop was negatively correlated with the stocking density. The growth of the shell height and total weight were decreased with decreasing of water temperature. Most of mortality of scallop occurred during March to April and September to October. Survival rate in the stocking density was decreased by density increase and was highest in 20 individual a compartment.
함정 설계 및 생산에서의 GT 응용에 관한 연구 -플랫폼 군 구성과 관련하여-
박광재,박진우,Park, Gwang-Jae,Park, Jin-Woo 한국국방경영분석학회 2006 한국국방경영분석학회지 Vol.32 No.2
Recently mass customization has become a new paradigm in the global market to satisfy both the diversified demands of customers but also the efficiency of the mass production system. In this paper, mass customization is embodied by a new product development method with which various product families are produced from standard "product platform" developed from historical data. The product platform, the key concept of this proposed method, is significantly efficient as a solution to the customer demand of high variety and small quantity products. The proposed method is applied to build the platform family of naval ships, utilizing the concept of "Group Technology". In addition, cost effectiveness of the proposed method is analyzed and the applicable range of requirement conditions are presented. In conclusion, some remarkable effects such as reduction in production cost and development time are expected by employing this method to the procurement process of the naval ships. 글로벌 시장 환경에서 대량생산을 통해 규모의 경제를 실현하는 동시에 고객들의 다양한 요구사항을 충족시키기 위해 대량맞춤화가 경영혁신의 새로운 패러다임으로 자리를 잡아가고 있다. 또한 이러한 대량맞춤화를 실현하기 위해 제품 플랫폼으로부터 다양한 제품들을 이끌어 낼 수 있는 제품개발 방법들이 사용되고 있다. 이 방법들의 핵심 개념은 제품 플랫폼으로서 이러한 방법은 다품종 소량의 시장 환경에서 더욱 효과적이다. 본 연구에서는 그룹기법 개념을 이용하여 해군 함정의 플랫폼 군을 구성하는 방법을 제시하고, 이것을 쉽게 사용할 수 있도록 매트릭스 형태로 제안하였다. 또한 플랫폼 방식으로 해군 함정을 도입 시 비용효과가 있는지 분석하였고, 적용 가능한 요구조건 범위를 제시하였다. 이 연구는 함정 획득과정에서 비용절감과 기간 단축 등의 효과를 얻을 수 있을 것으로 기대된다.
Hebei spirit호 유류유출과 서해안 바지락 양식장의 변화
박광재,김수경,강덕영,송재희 한국패류학회 2015 The Korean Journal of Malacology Vol.31 No.3
After oil outlow accident of Hebei spirit in December 7, 2007, the motality of manila clam, Ruditapes philippinarum in the west coast of South Korea, was significantly increased from 9.2% in April, 2007 to 22.4% in April 2008. Although the mortality was about 10% in the tidal flat of Geunso Bay and Cheonsu Bay, Incheon and Gyeonggi-do, the values was significantly high about 30% in water coast of Taean, Boryeong and Seosan in where the spilled oil was getting into fishery zone. However, the mortality in water coast of Taean, Boryeong and Seosan was decreased from 22.4% in 2008 to 6.0% in 2009. Also, we found that the mortality in contaminated and non-contaminated water zones was both slightly increased from 6.0 in 2009 to 8.6% in 2010, Therefore, these results are indicating that the significant high mortality observed in water coast of Taean, Boryeong and Seosan at April, 2008 was due to the crude oil accident outflow from tanks of Hebei spirit. Although the mortality of manila clam was significantly decreased in middle west coast of South Korea after the accident of Hebei spirit in December, 2007, the annual production of manila clam in South Korea was sustainedly from 27,459 ton in 2007, 36,302 ton in 2008, 40,392 ton in 2009, to 36,248 ton in 2010. In the production of manila clam by regional groups, the amount in sea coast of Chungnam, where was damaged by crude oil, was significantly decreased from 10,598 ton in 2007 to 5,048 ton in 2008, but then was significantly increased to 7,065 ton in 2009, and to 12,921 ton in 2010. However, in sea coast of Jeonnam that was not damaged by crude oil, the amount was significantly increased from 1,252 ton in 2007 to 12,248 ton in 2008, but then was significantly decreased to 9,566 ton in 2009, and to 2,770 ton in 2010. Therefore the results are suggesting that a increasing of the total annual production of manila clam in South Korea in 2008 when was 1 year after the oil accident of Hebei spirit was due to increasing of clam production in a coast of Jeonnam in where was not damaged by crude oil.
대학내 위생시설의 장애학생 이용 가능성에 대한 조사·평가 연구
박광재 한국의료복지시설학회 2004 의료·복지 건축 Vol.10 No.1
The sanitary arrangements and Toilets are very important for a barrier-free environment of university education. this paper try to provide basic evaluation of the sanitary arrangements for disabled person in university. To accomplish this purpose this study has analyzed with questionnaire quantitatively and quantitatively the 188 universities. As the result, from the barrier-free environmental evaluation of the sanitary arrangements, the large-scale university and the university without special admission rules are done low.
공동주택단지 옥외공간의 장애인 편의시설 실태분석에 관한 연구
박광재,성기창 한국의료복지시설학회 2005 의료·복지 건축 Vol.11 No.2
The purpose of this paper is to analyze the handicapped facility in residential outside area, to found how to improve the law in analyzing the residential area and to suggest consideration factor in design phase. To concentrate the study, the objects of case study are selected carefully, also case study method is selected as well as objects. After observing the summary of objects, the checklist is made accordance with the improvement law of facility. The checklist has the general and detail factor about outdoor residential area, and the detail factor is based on the improvement law of facility and is used to examine and analyze.