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朴萬坤,朴美榮,姜奉勳 釜山水産大學校 1986 釜山水産大學 硏究報告 Vol.26 No.1-2
하나의 異狀値를 갖는 一母數 指數分布上에서 異狀値를 決定하는 障碍母數가 固定된 境遇와 可變인 境遇로 區分하여 信度函數에 對한 공액 事前分布와 非情報 事前分布의 베이즈 推定量을 提案하고, Monte Carlo Simulation과 數値積分技法을 利用해서 無作爲小標本을 推出하여 信度에 關한 提案된 베이즈 推定値들과 最尤推定値를 計算하고, 또한 이 推定値들의 平均 MSE를 求하여 그 性能을 比較한 結果, 하나의 異狀値를 갖는 境遇에도 베이즈 推定量이 훨씬 優秀하다는 事實을 調査하였다.
어떤 異常値의 包含 및 除去에 따른 左側截斷된 指數壽命分布의 베이지안 推定
朴萬坤 釜山水産大學校 1988 釜山水産大學 硏究報告 Vol.28 No.2
하나의 異常値를 갖는 左側截斷된 指數壽命分布上의 Exchangeable-outlier 模型에서 그 하나의 異常値가 包含되는 境遇와 除去되는 境遇에서의 母數들과 信賴度에 대한 베이즈 推定量을 提案하고 Monte Carlo 方法에 依해 提案된 두 境遇들의 推定量들의 性能을 比較하였다.
大邱地域 中小企業의 效率的인 技術開發 方案에 관한 硏究
全瑨文,張晩植,尹在坤,金圭昌,李栽燁,朴筍植,黃建夏 효성여자대학교 산업경영연구소 1988 경영경제 Vol.5 No.-
For modern business firms, the most important factor in determining comprtitiveness of a firm is technology, rather than capital. Technogical innovation is a driving force to develop an economy and is essential in growth and/or survival of a business firm. Following studies concerned with this subject, small business firms seem to be more efficient in technological innovation and developing new technology in several respects. Espercially in the new technology based industries, the small business firms have several advantages in technological innovation. In this study, we tried to show how to plan a technology development strategy in relation to management strategy when small business of theoretical and empirical study, we aimed to show the way to efficient management and procedure of technological innovation. For the research methodology, we firstly reviewed and analyzed current and previous studies about technological innovation strategy, efficient management, and selection of R&D projects. Secondly, the results of this theoretical study was examined empirically. The empirical study contains 153 questionaires and 30 interviews for business firms of this area. In addition, for the evaluation criteria for the selection of R&D projects, we sent questionaires to 60 professors who teaches R&D OR in university or college level. The result of these questionaires was analyzed and compared with that of the business firms of this area. The result of this empirical study shows that top management of small business firms should notice the importance of technological innovation and try to stimulate R&D activity. For the evaluation criteria for R&D projection, the criteria which could reduce the possibility of future uncertainty, maximize profit, and he suited for the situation of the business firm, should be established.
Bayes Estimators of MTTF in the Gamma Life Model
PARK, Man Gon 釜山水産大學校 1985 釜山水産大學 硏究報告 Vol.25 No.1
故障時間 X₁,X₂, …, ??이 形狀母數 P와 尺度母數 θ를 갖는 감마分布의 無作爲標本이라고 할때, (1) 非情報 事前分布의 一般類, (2) 공액 事前分布의 一般類를 갖는 平均壽命時間(MTTF)의 베이즈 推定量들을, 形狀母類 P가 旣知인 境遇와 未知인 境遇로 區分해 提案하고, 電子計算機를 使用해서, Fishman의 알고리즘에서 얻어진 감마 無作爲標本을 出力시키고 그 結果를 利用해서 形狀母數 P의 값이 旣知일때의 MTTF에 對한 베이즈 推定量을 計算하고 그 變化를 考察함.
Park, Byong-Gon,Shin, Woon-Seob,Oh, Sangtae,Park, Gab-Man,Kim, Nam Ik,Lee, Seokjoon Elsevier 2017 Bioorganic & medicinal chemistry Vol.25 No.17
<P><B>Abstract</B></P> <P>We isolated the novel vasoactive marine natural products, (5<I>E</I>,10<I>E</I>)-14-hydroxy-2,6,10-trimethylpentadeca-5,10-dien-4-one (<B>4</B>) and sargachromenol D (<B>5</B>), from Sargassum siliquastrum collected from the coast of the East Sea in South Korea by using activity-guided HPLC purification. The compounds effectively dilated depolarization (50mMK<SUP>+</SUP>)-induced basilar artery contraction with EC<SUB>50</SUB> values of 3.52±0.42 and 1.62±0.63μM, respectively, but only sargachromenol D (<B>5</B>) showed a vasodilatory effect on endothelin-1 (ET-1)-induced basilar artery contraction (EC<SUB>50</SUB> =9.8±0.6μM). These results indicated that sargachromenol D (<B>5</B>) could act as a dual antagonist of <SMALL>L</SMALL>-type Ca<SUP>2+</SUP> channel and endothelin A/B<SUB>2</SUB> receptors. Moreover, sargachromenol D (<B>5</B>) lowered blood pressure in spontaneous hypertensive rats (SHRs) 2h after oral treatment at a dose of 80mg/kg dose and the effect was maintained for 24h. Based on our ex vivo and <I>in vivo</I> experiments, we propose that sargachromenol D (<B>5</B>) is a strong candidate for the treatment of hypertension that is not controlled by conventional drugs, in particular, severe-, type II diabetes-, salt-sensitive, and metabolic disease-induced hypertension.</P> <P><B>Graphical abstract</B></P> <P>Sargachromenol D (<B>5</B>) acts as a dual antagonist of L-type Ca<SUP>2+</SUP> channel and endothelin A/B<SUB>2</SUB> receptors.</P> <P>[DISPLAY OMISSION]</P>
Generic Submanifolds of ? under the Condition of Antinormality
PARK, Man Gon 釜山水産大學校 1983 釜山水産大學 硏究報告 Vol.23 No.1
遇數次元 유클리드 空間을 ??, n次元 리이만 多樣體를 ??이라 할 때, 平坦한 法接續을 가진 ??의 完備 一般形 部分多樣體 ??上에서 誘導된 f-構造가 反正規(antinormal)이면, ??은(n-1)次元 유클리드 平面 ??에 直交인 平面曲線을 따라서 平行移動한 하나의 線織面(a ruled surface)이 됨을 밝힘.
On Anti-holomorphic Submanifolds Immersed in ??? Admitting Normal f-structure
PARK, Man Gon 釜山水産大學校 1982 釜山水産大學 硏究報告 Vol.22 No.1
偶數次元 Euclid 空簡 ??? 에 法案續이 平垣한 n次元 一般形 悲極小 完備 部分 多樣體를 Mⁿ이라하면, Mⁿ에 誘導된 f-構造 正規이고 scalar 曲率 K가 零이면 (n-1) 次元 平面 ????次元 에 平面 ????에 直交인 平面曲線을 따라서 ????-平面을 平行移動 시킨 線織面이 Mⁿ에 依해서 生成됨을 밝힘.