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김태수 대한건축학회 2007 大韓建築學會論文集 : 構造系 Vol.23 No.6
Cold-formed steel design standards such as AIK, AISI, CSA, EC3, AIJ etc. which were suggested through experimental and numerical research with many parameters to estimate the failure mode and ultimate strength of bolted connections were summarized according to four failure modes of bolted connections ; net section fracture, end shear out fracture, bearing fracture and block shear rupture. These design equations which have been revised until recently were classified into some expressions based on types of shear connections, use of washer, requirements of ductility, shear lag effect, ratio of bolt diameter to thickness etc. In this study, it is shown that there are differences between the standards with respect to same failure mode and, in order to verify their applicability in predicting ultimate behavior of connections, the comparisons among current design codes and two existing test results of connection specimens fabricated from common steel and low ductility steel were made. It is recommended that AISI specification for bolted connections governed by net section fracture, end shear out fracture and bearing fracture, and CSA design code for block shear rupture within limited edge distance be used. In addition, revised formula for block shear rupture considering bearing fracture is suggested.
김태수,박정우,김미자,이재환 한국식품과학회 2013 Food Science and Biotechnology Vol.22 No.1
Antioxidative or prooxidative properties of α-tocopherol, Trolox, ascorbic acid, and ascorbyl-palmitate at the concentration of 0.1 and 1.0 mM were determined in oil-in-water (O/W) emulsions under chlorophyll photosensitization. Headspace oxygen depletion, lipid hydroperoxides,and headspace volatile analyses were conducted to determine the oxidative stability of O/W emulsions. For 32 h visible light irradiation, depleted headspace oxygen content in O/W emulsions were in the order of samples containing Trolox, ascorbic acid, ascorbyl palmitate, α-tocopherol, without antioxidants under light, and samples in the dark, which implies that all the added compounds acted prooxidant. These prooxidative properties of added compounds can be observed in the results of lipid hydroperoxides and headspace volatiles. Samples containing ascorbic acid and ascorbyl palmitate retained higher chlorophyll content than those containing Trolox up to 16h. Increases of concentration of Trolox, ascorbic acid, and ascorbyl palmitate from 0.1 to 1.0 mM increased the lipid oxidation products whereas α-tocopherol decreased the degree of lipid oxidation implying α-tocopherol may not share the same prooxidant mechanisms compared to other compounds in chlorophyll sensitized O/W emulsions.
金泰秀 울산과학대학 1982 연구논문집 Vol.7 No.1
테일러에 의한 科學的管理法이 産業工學 및 經營學에 미친 影響은 至大하다. 그런데 그의 理論에 대한 合理性이나 問題點이 檢討되지 않은 채 經營者, 技術者, 勞動者들에게 紹介되고 注目되었기 때문에 그의 哲學은 잊혀져 가고 技巧的技法만 適用되어 理論上의 脆弱點들이 補完되지 못한 점이 많다. 따라서 本稿는 科學的管理法이 出現된 當時의 美國의 社會經濟的背景을 밝히고 經濟學的인 競爭形態로서는 어떠한 範疇에 屬하는가를 考察하여 科學的管理法의 理論的 뒷받침을 했다. 그 結果 다음과 같은 結論을 얻었다. 첫째, 科學的管理法이 出現한 當時의 美國의 經濟環境은 不完全競爭市場形態의 獨占的 競爭市場이었다. 둘째, 科學的管理法이 目標로 한 高賃金, 低原價中에서 高賃金은 勞動問題의 解決로 低原價는 可變費用의 改善으로 그 效果를 達成할 수 있다. Taylor's Scientific Management exerted an important influence upon I.E. and Management. But his theory has been informed and used to the managers, engineers, labors, not investigated it's rationalities and problems. Therefore his philosophy became vanished and only applied technical skill, there are much weak points on his theory not to fill up. So this paper describes the American social and economical environment of scientific management just on that time. It endorses the scientific management's theory, studying of economical competitive market types. We can deprive of the following conclusions. First, on that time, American economical environment was monopolistic competitive market among imperfective ones. Second, the goal of scientific management in the high wage and low cost. The former can obtain the desired results with the solution of labor problems, the latter can obtain them with the improvement of variable cost, too.
기본소득(UBI)에 대한 사회학적 관점 : Erik Olin Wright를 중심으로
김태수 그리스도신학대학교 출판부 2020 교수논문집 Vol.20 No.-
기본소득(UBI)에 대한 사회학적 관점