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완도 조간대해역에서 굴 (Crassostrea gigas) 의 배수체별 성장 특성
조상만 한국패류학회 2018 The Korean Journal of Malacology Vol.34 No.4
In order to investigate the growth performance, triploid and diploid Pacific oysters, Crassostrea gigas, were introduced into the rack oyster farm on the tidal flat in Wando waters, Korea. No significant differences were observed in monthly growth performance but in total weight in August, 2017 with significant higher in triploid. Whereas a relatively higher specific growth rate was observed in triploid for shell height and total weight as much as 76% and 56% than diploid. This could be attributed to feeding behavior which digestive gland atrophy was much higher in triploid throughout the experiment period except August, 2017. The growth differences were also attributed to a difference of reproductive behavior that triploid, mostly male sex, can easily recover the loss of energy after spawning. No significant difference was observed in proximate composition and hydrolyzed amino acid composition, but more delicate studies required for tasty compound. A hardened triploid spat could be a good approach to introduce a tidal flat rack oyster culture in Wando, being avoid the unnecessary social confliction for fouling contamination for abalone culture in Wando, Korea.
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조상균(趙翔均),노상헌(盧尙憲) 전남대학교 법학연구소 2006 법학논총 Vol.26 No.-
日本は人口が減少する状況に直面し、これを打開するため ｢国際競争力の強化｣と｢地域経済の活性化｣という二つの柱を中心とする経済活性化対策を打ち出した。そこには、①人口減少下の新しい成長'、②イノベーションと需要の好循環、③改革の先に見える明るい未来などが新経済成長戦略'の目標であり、この目標を達成するための五ヶのイノベーションを提示した。具体的にはヒト(人財力のイノベーション)、モノ(生産手段とインフラのイノベーション)、カネ(金融のイノベーション)、ワザ(技術のイノベーション)、チエ(経営力のイノベーション)のイノベーションを通じて、日本は経済の規模だけではなく、国際競争力のある経済、一人当たり所得水準の高い経済、リスクや不確実性に強い経済、すなわち世界に存在感のある強い日本経済'、新しい価値を次々と発信し、世界へ提供し続ける魅力のある日本'になるべきであるとしている。 特に日本の新経済成長戦略'のなかでに注目すべきのは、人財立国'を目指すと宣言したのである。これは人口が減少するなかで、企業の人材投資の抑制、実社会のニーズに十分対応できていない大学学校教育、家庭地域の教育力の低下など、日本の人材育成機能に限界が発生しているという問題意識である。このため、個人が持ている能力を最大限発揮できるよう、従来の単線的な教育ルートや企業内キャリアパスを改め、多様な学び方働き方を柔軟に支える社会の仕組みを構築するとした。要するに ‘将来を担う人財のための投資'を思い切って進めるとともに、産業界、地域、学校の力を結集し、‘人財立国'を目指すという。急速な少子化で生産年齢人口の減少は避けなれないが、それが労働力の減少にはつながれないように取り組むことの日本の戦略的な接近は非常に示唆的である。 そして、2006年4月試行された ‘高年齢者雇用安定法’に基づいて高年齢者雇用確保措置のなかで殆んどの企業が選択したものは定年後再雇用を通じた雇用確保措置である。定年はそのまま残して、いったん定年退職したあとに希望者の全員を再雇用し雇用確保措置の上限年齢まで継続して雇用する方式である。一方、この方式は賃金削減を伴うようになろう。企業側としては再雇用のとき、賃金削減は人件費の抑制のため避けなれない措置であろうが、労働者側としても再雇用後の賃金は年金の減額を補充するものとの認識を持ち、これが賃金削減を前提とする雇用延長になると思う。しかしながら、日本の伝統的な雇用慣行(終身雇用と年功序列)が崩れるなか、希望者全員の再雇用という水平的再雇用制度は、短期的な高齢者雇用確保には効果があろうとしても、この対応が長期にも十分に働けるかについては疑問が残る。
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통영연안 해역의 양식 참굴(Crassostrea gigas)의 중금속 농축에 관한 연구
조상만,김영환,정우건 한국패류학회 2009 The Korean Journal of Malacology Vol.25 No.3
In order to investigate contamination of heavy metal in seawater and cultured oyster, samples were collected November 2003 to July 2004 from 12 sites (13 sites for seawater) along the coast of Tongyeong, Korea. The mean concentrations of metal in oyster tissues were as follows: 0.09 (0.01-0.3) μg/l for Cd, 0.47 (0.01-1.4) μg/l for Cr, 0.59 (0.2-2.3) μg/l for Ni, 1.02 (0.1-4.2) μg/l for Pb and 0.48 (0.01-3.9) μg/l for Hg in the seawater, whereas 2.45 (0-5.47) mg/kgDW for Cd, 3.63 (0.10-12.91) mg/kgDW for Cr, 3.2 (0.01-15.73) mg/kgDW for Ni, 3.51 (0.01-6.47) mg/kgDW for Pb and 0.39 (0.004-0.74) mg/kgDW for Hg, respectively. Most metal concentration values were below the permissible range for the related regulations. Mean bioconcentration factors (BCF) for each metal were as follows: 38,964 (1,771-207, 171) for Cd, 9,583 (1,231-80, 162) for Cr, 191 (3-20, 980) for Ni, 1,416 (245-5, 207) for Pb and 180 (5-716) for Hg, respectively. The BCF values from this study corresponded to the transitional phase from the pristine to the contaminated waters. Notably, Cd showed the highest BCF, which suggest that the Pacific oyster could be utilized as a useful biomarker for Cd contamination in sea water. The multidimensional scaling analysis suggested that the metal contaminants are mainly originated from combustion of fossil fuel and accumulated to oyster through food web.
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조상만,현철지,박수국,Jo, Sang-man,Hyun, Cheol-ji,Park, Soo-kuk 한국조경학회 2017 韓國造景學會誌 Vol.45 No.5
가로수가 여름철 인간 열환경지수(열쾌적성)에 미치는 영향을 분석하기 위해, 낙엽활엽교목 2종과 상록활엽교목 3종 총 5종의 가로수를 대상으로 수목 하부의 음지와 그 옆의 양지에서 미기후 자료를 측정하여 비교 분석하였다. 그 결과, 기온, 상대습도, 풍속의 차이는 각각 평균 $0.2{\sim}1.5^{\circ}C$, 0.9~5.3%, $0.1{\sim}0.5ms^{-1}$로 미비하였으나, 평균복사온도는 평균 $27.1^{\circ}C$의 매우 큰 차이를 보여 주었다. 인간 열환경지수인 PET와 UTCI 결과에서는 수목 하부의 음지가 양지에 비해 PET에서는 평균 21.2~31.3%의 저감 비율을 보여 1.5~2.5단계의 열지각 개선 효과를 나타내었으며, UTCI에서는 평균 12.7~20.0%의 저감 비율을 보여 1~1.5단계의 heat stress 저감 효과를 보이는 것으로 나타났다. 또한, 상록활엽교목이 낙엽활엽교목에 비해 PET에서 평균 5% 더 높은 저감 비율을 나타냈지만, 낙엽활엽교목에 속하는 느티나무는 지엽의 밀도가 높아 상록활엽교목 만큼의 열환경지수(열쾌적성) 개선 효과를 나타내었다. 이에 따라, 가로수의 여름철 열 저감 효과에서 지엽의 밀도와 평균복사온도가 주요 영향임을 알 수 있었다. In order to analyze the effect of street trees on human thermal sensation(thermal comfort) in summer, microclimatic data were measured and analyzed at sunny and shaded locations of two deciduous broadleaf and three broadleaf evergreen species of street trees. As a result, the mean differences by species in air temperature, relative humidity and wind speed were small: $0.2{\sim}1.5^{\circ}C$, 0.9~5.3% and $0.1{\sim}0.5 ms^{-1}$, respectively, but the mean difference in the mean radiant temperature was great, $27.1^{\circ}C$. In the results of physiological equivalent temperature(PET) and universal thermal climate index(UTCI), which are human thermal sensation(thermal comfort) indexes, the shaded locations by the trees showed mean reduction rates of 21.2~31.3% in the PET compared with the sunny location, which are equivalent to 1.5~2.5 levels of thermal perception. Also, 12.7~20.0% in the UTCI was reduced by the trees' shadows, which is equivalent to 1~1.5 levels of heat stress. In addition, although the broadleaf evergreen trees had 5% greater mean reduction in PET than that of the deciduous broadleaf trees, the Zelkova serrata that belonged to the deciduous broadleaf trees showed the equivalent thermal reduction effect as the broadleaf evergreen trees because of the high density of branches and leaves. Therefore, the mean radiant temperature and the density of the crown(branches and leaves) were the main influences in thermal modification by these street trees in summer.
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조상만 한국차세대컴퓨팅학회 2021 한국차세대컴퓨팅학회 학술대회 Vol.2021 No.05
디지털 트랜스포메이션에 있어서 모델링 및 시뮬레이션 분야도 더 이상 예외는 아니다. 이미 많은 유수의 선진 기업 및 연구기관들이 클라우드를 도입하여 이러한 분야에서 다양한 비지니스 혁신을 이루어 내고 있다. 본 논문에서는 AWS 클라우드를 CAE/CAD 도입할 경우 얻을 수 있는 여러가지 장점에 대해 고찰해 보았다.
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