The mesh selectivity of diamond and suare mesh cod-ends at the Southern Korean Sea and the East China Sea were compared for Pampus argenteus, Trachurus japonicus, Trichiurus lepturus. Selection trials were carried out using diamond and square mesh cod-end by trouser type cod-end with cover net. of which the mesh cod-end has four types : A(51.2mm), B(70.2mm), C(77.6mm), D(88.0mm). Selection curves and selection parameters were calculated using a logistic model. The results obained are summarized as follows : 1. Harvest fish : In B. C and D type selection range and fifty percent selection length of the square mesh were about 21mm, 11mm : 12mm, 18mm and 34mm, 5mm higher than those of the diamond mesh, respectively. Selection factor of master curve for the diamond mesh was 1.54 and for the square mesh was 1.68. The optimum mesh size for the diamond mesh was 97.4mm and for the square mesh was 89.3mm, the difference was 8.1mm. 2. Horse mackerel : In A type, selection range was nearly the same for the diamond and the square mesh, but fifty percent selection length of the square mesh was 43mm higher than the diamond mesh. In B. C and D type, selection range and fifty percent selection length of the square mesh were about 6mm, 3mm : 24mm, 21mm and 11mm, 42mm higher than those of the diamond mesh, respectively. Selection factor of master curve for the diamond mesh was 2.37, for the square mesh was 2.77. The optimum mesh size for the diamond mesh was 78.1mm and for the square mesh was 66.8mm, the difference was 11.3mm. 3. Hair tail : In A, B and C type, selection range of the square mesh was about 34mm, 8mm, 60mm higher than those of the diamond mesh. Fifty percent selection length for the diamond mesh was about 5mm, 7mm, 8mm higher than that of the square mesh. Selection factor of master curve for the diamond mesh was 3.11, for the square mesh was 3.48. The optimum mesh size for the diamond mesh was 64.3mm and for the square mesh was 57.5mm, the difference was 6.8mm.

Microwave플라즈마 화학 증착법으로 다이아몬드 박막을 증착하여 morphology변화를 관찰하였다. 기판 온도가 550˚C에서 750˚C로 증가함에 따라 다이아몬드 박막의 표면 morpholoty는 111에서 100, cauliflower형태로 변화하는 것과 함께, 증착층내의 nondiamond성분이 증가하는 것을 발견하였다. 증착 층 내에 존재하는 nondiamond성분은 다이아몬드 입자의 입계에 분포하고 있음을 마이크로 Raman분석으로부터 추측할 수 있었다. 증착층의 texture orientation 을 X-선 회절 분석기로 확인한 결과, 550˚C에서는 증착층의 texture orientation이 관찰되지 않았지만 온도가 증가함에 따라<100>에서<110>으로 변화하는 것을 관찰할 수 있었다.

남부지방에서 배추좀나방은 각 태 모두 월동 가능하였다. 유아등에 의한 성충발생소장을 보면 5월, 6월 중순~7월 중순, 9월 하순~11월 상순에 발생량이 많았고, 7월 하순~9월 중순에는 적었다. Field-cage 조건하에서 연 발생세대수는 10~11이었고, 란에서 유화까지 7, 8월에는 11~18일, 6, 9월에는 19~23일, 4, 5, 10월에는 28~34일이었으며, 기타 기간에는 50~100여일 경과하였다. 성충수명은 여름에 4~11일, 봄 가을에는 7~17일이었고, 산란수는 50~240개로 봄 가을에 많으며 여름에는 적었다. Field-cage조건하에서 각 태별 기간은 7, 8월에 난이 2~3일, 유충은 7~8일, 용은 4~6일이며, 6, 9월에는 난이 4~5일, 유충은 9~12일, 용은 6~8일이고, 3, 4, 5, 10월에는 난이 6~18일, 유충이 13~20일, 용이 8~14일이며, 겨울동안은 난이 12~40일, 유충이 50~100일, 용은 20일정도 경과하였다.

In this study, we evaluated the treatment efficiency of livestock wastewater by altering the current density using boron-doped diamond (BDD) electrodes. As the current density was adjusted from 10 to 35 mA/cm2, the removal efficiency of organic matter increased from 22.2 to 71.5%. Similar to that of organic matter, the removal efficiency of color increased with increasing current density up to 85.7%, indicating a higher removal efficiency for color than that of organic matter. The removal efficiency of ammonia nitrogen increased from 14.6 to 53.3% as the current density increased, but it was lower than that of organic matter. In addition, the removal of organic matter, color, and ammonia nitrogen followed first-order reactions, according to the reaction rate analysis. The energy consumption ranged from 4.87 to 8.33 kWh/kg COD, and it was found that the organic matter removal efficiency was more efficient at high current densities. Based on various analyses, the optimal current density was 20 mA/cm2, and the corresponding energy consumption was 6.824 kWh/kg COD.

Purpose – The objective of the current research is to explore success factors of the ‘Night Markets’ in Korea. Unlike other countries, where the markets are culturally established based upon various socioeconomic factors, the night markets are relatively new phenomena in Korea and are created by the government’s support. Since the first introduction in 2011, now there are 34 Night Markets that are operating or are in the process of operation. Some of them attract nearly 100,000 customers a day, while some are discontinued shortly after the introduction due to lack of visitors. Its influence on the customers’ behavioral motives of engaging in various activities in the night markets is increasing. However, because of its brief history in Korea, not much of research has cast attention on them. It is imperative to figure out the success factors of the night markets, so that other night markets can learn the secret of successful operation of the markets. Research design, data, and methodology – The research is based upon both qualitative and quantitative data. Data are collected from multiples levels of the night market related parties. Four groups are chosen: customers, night market sellers, sellers’ union and government officers who are in charge of the market. Conventional survey formats are employed for customers and night market sellers. For night market union and government officers, survey and in-depth focus group interview methods are applied. Of the night markets in operation, commonalities of successful or well established ones are elaborated. Results – Night Market operation success factor are sought utilizing Porter's The Competitive Advantage of Nations model (1990). Results are shown that successful night markets commonly have satisfactory 'Factor Conditions.' Specifically, established night markets have either nearby big cities or tourist attractions in common. While these have fair 'Firm Strategy/structure/rivalry,' and 'Related and supporting industries,' they commonly demonstrate weakness in 'Demand conditions.' Conclusions – A successful night market incurs new customers not only to the market itself but also to the traditional periodical market the night markets are within. Government support to the night market can be justified where the circulation of new customer to the night market and the night market to the periodical market mechanism is in effective.

This study focused on whether the large-scale expansion joints of the Diamond Bridge, a suspension bridge, is being appropriately and efficiently utilized during maintenance period. In this study, a linear regression model was developed by analyzing long-term monitoring data from the bridge, considering the bridge design standards in Korea and building-related literatures. Then, the reliability of the model was verified through a theoretical review on the relationship between temperature change and expansion joint displacement. The expansion joint displacements of the bridge showed a regular time series graph with temperature change. A linear regression analysis indicated that the slope of the graph was very similar to the displacement of steel due to linear expansion coefficient, with a high determination coefficient (R2=0.979), meaning that the actual behavior of the bridge conforms to the theory. Considering the expansion joint specification of the bridge and existing external loads, actual expansion joint displacement was only 8.5 percent of its specification, so the specification can be adjusted in order that actual expansion joint displacement can be up to 21.6 percent of its specification. In this case, expansion joint cost can be reduced as much as 78.4 percent of its original cost.

현재 기업들은 본연의 가치창출활동과 사회적 공헌을 일체화시킨 공유가치창출이라는 CSV(Creating Shared Value)의 개념을 도입하고 있다. 기업은 일회성이 아닌 지속가능한 CSV를 확산하기 위한 경 영 전략으로써 인간적인 관계를 통해 접근하는 서비스디자인 영역에서 발전시킬 수 있다. 본 연구는 기업이 CSV활동에서 서비스디자인을 도입한 네 가지의 사례를 영국의 디자인카운슬의 더블다이아몬 드 모델 적용단계에 있어서의 발견, 정의, 개발, 전달이라는 네 단계를 집중 분석함으로써 CSV확산과 서비스디자인의 활성화를 위한 전략적 시사점을 제시하고자 하였다. 시사점으로는 첫째, CSV전략을 위한 서비스디자인 적용은 직접적인 수익창출이 아니더라도 지속가능한 기업경영을 위해 효과적이다. 둘째, 기업은 서비스디자인을 추진함에 있어 사회적인 문제점을 정확하게 발견하는 단계가 우선시되 어야 한다. 또한 소비자들이 직간접으로 참여한 만큼 진정성 있는 서비스의 전략수립과 결과를 평가하 고 피드백 할 수 있는 효과적인 방법이 요구된다. 셋째, 서비스디자인 방법론을 도입함에 있어서 CSV 의 핵심적 가치의 유지가 필요하다. 본 연구를 통해서 향후에는 많은 기업들이 CSV를 바탕으로 한 미 래 시장의 경영 전략에 서비스디자인을 적극적으로 적용하여 기업의 비즈니스 기회에 경제적 사회적 이익을 모두 추구할 수 있는 긍정적인 결과가 나오길 바란다.

In organic Chinese cabbage fields, Commercial Bacillus thuringiensis products are used widely against diamond back moth, Plutella xylostella. We conducted the study to determine the effective spray-interval of commercialized B. thuringiensis against diamond back moth on Chinese cabbages. Chinese cabbage leaves were collected 0, 1, 2, 3, 6, 10days after treatment in first trial and 0, 2, 4, 7, 9, 11days after treatment. We compared the insecticidal property of sprayed B. thuringiensis and the density of it on surface of Chinese cabbages using collected leaves. The insecticidal property maintained high until nine days after commercial B. thuringiensis products sprayed.

인은 다이아몬드 내에 함유될 수 있는 흥미로운 불순물 중의 하나로서 n 타입의 반도체가 될 수 있다는 점에서 흥미롭다. 그러므로 전기적 특성 및 광학적 특성이 많이 연구되고 있지만, 대부분이 CVD (화학 기상합성) 다이아몬드에 관한 것이다. 본 연구에서는 인을 첨가한 HPHT (고압과 고온) 다이아몬드를 합성하고 인이 어떻게 함유되는가 알아보기 위하여 CL 분광기로 광학적 특성을 살펴보았다. 그 결과, 기존에 발견된 발광피크(239 nm, 240～270 nm)뿐만 아니라 248, 603 nm에서 새로운 발광피크가 발견되었다. 이러한 발광피크들은 인과 같이 혼입된 질소나 붕소와 같은 불순물이 공존하여 발생한 복합 결함에 의한 것이라고 판단된다.