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알루미늄 튜브 하이드로포밍에서의 예비 굽힘 공정의 효과에 관한 연구
임희택,박경창,김형종,김헌영 江原大學校 産業技術硏究所 2004 産業技術硏究 Vol.24 No.B
Recently social demands of fuel economy and environmental regulations require the development of lightweight components and new manufacturing technologies. The aluminum tube hydroforming is a manufacturing process which can provide lightweight components as automotive parts. In this paper, the hydroformability of aluminium tube in different condition of bending process is presented. An investigation has been conducted on how to control the deformed shape and its effect on thinning distribution after hydroforming by using finite element simulation. Finite element simulation of tube hydroforming for automotive trailing arm is carried out to explore the effect of 2-dimensional and 3-dimensional bending.
타리비드 정(오플록사신 100㎎)에 대한 파비드 정의 생물학적동등성
박완수,조성희,이헌우,임호택,홍성제,서성훈,류재환,이경태 한국약제학회 2005 Journal of Pharmaceutical Investigation Vol.35 No.1
The purpose of the present study was designed to evaluate the bioequivalence of two ofloxacin tablets, Tarivid (Jell Pharm. Co., Ltd.) and Favid (ILHWA Co., Ltd.), according to the guidelines of Korea Food and Drug Administration (KFDA). Twenty-four normal male volunteers, 23.67±3.12 year in age and 68.50±7.23 kg in body weight, were divided into two groups and a randomized 2x2 cross-over study was employed. After four tablets containing 100 mg of ofloxacin were orally administered, blood was taken at predetermined time intervals and concentrations of ofloxacin in plasma were deter mined using HPLC. Pharmacokinetic parameters such as AUC_(t) and T_(max) were calculated and ANOVA test was utilized for the statistical analysis of the parameters using logarithmically transformed AUC_(t), and C_(max) and untransformed T_(max). There were no sequence effects between two formulations in these parameters. The 90% confidence intervals for the log transformed data were acceptance range of log 0.8 to log 1.25 (e.g., log 0.94-log 1.04 and log 0.90-log 1.07 for AUC_(t) and C_(max) respectively). The major parameters. AUC_(t) and C_(max) met the criteria of KDFA for bioequivalence indicating that Favid tablet is bioequivalent to Tarivid tablet.
채영진,신창환,임현택,여성원,한성규,이재원,정헌영,금경수 한국전통의학연구소 2003 한국전통의학지 Vol.13 No.1
Five elements motion and six kinds of natural factors influence not only human disease but also difference of medicine effect. Because the climate of summer is very hot, that is easy to increase the properties of hot medicines, a doctor must be careful to use it in summer. Also the climate of winter is very cold, that is easy to increase the properties of cold medicines, a doctor must be careful to use it in winter. But in the certain conditions to use diaphoretics or purgatives, in spite of that regulation a doctor can use them.
Taek-Jun Kang,Heung-Sik Lee,Si-Heon Oh,Myoung Rae Cho,Heung-Yong Jeon,Chang-Yeul Yang,Hyeong-Hwan Kim,Jae-A Jung 한국응용곤충학회 2010 한국응용곤충학회 학술대회논문집 Vol.2010 No.10
Blossom midge, Contarinia maculipennis Felt (Diptera: Cecidomyiidae) is originated in Southeast Asia and has been present in Japan, USA and Hawaii. Recently, C. maculipennis was intercepted in Japan, USA and Netherlands with orchid flowers imported from Southeast Asian countries. This pest is designated as quarantine pest in Korea because of its potential damages to vegetables and ornamental plants in case when this pest introduced in Korea. C. maculipennis has known to feed inside unopened flower buds, causing deformed, discolored buds and blossoms. And, in severe infestations, cause premature bud or blossom drop. In Korea, similar damage symptoms have been reported in western orchids which mighty be caused by C. maculipennis from Mid-2000s, especially on D. phalaenopsis. An official recognition to C. maculipennis was given in 2007. And, the occurrences of C. maculipennis and its damages were investigated mainly on D. phalaenopsis in 2008~2009. We emphasize caution about recognizing the possibilities that C. maculipennis could infest flower buds of an orchids and carry out management strategies for this pest in the future.
스파크 점화기관 냉간 시동시 플라즈마 광촉매 복합장치와 스월 2차 공기분사에 의한 탄화수소 화합물 저감에 관한 실험적 연구
이택헌(Taek-heon Lee),신영기(Yoonggy Shin),전광민(Kwang Min Chun) 한국자동차공학회 2002 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2002 No.5_1
In addition to the previous studies about model gases and engine-out hydrocarbon reaction through the plasma photocatalyst combined reactor, secondary air injection effects and synergy effects with the reactor were investigated. With secondary air injection only, the combustion products such as acetylene increased most highly because the large amounts of these components under rich condition at cold stan were not oxidized sufficiently due to the initially lower frame temperature from secondary air dilution. But the fuel components such as iso-pentane were reduced to 50% maximum. Olefins did not show any peculiar trends and, when excess 0₂secondary air was injected, additional oxidations were measured in small amounts.<br/> In the simultaneous application with plasma-photocatalyst reactor, there were not remarkable changes with the non-fuel components and fuel paraffins compared with the secondary injection only However the olefinic components were dramatically decomposed more than 95% except iso-butylene which was decomposed by 80%.<br/>
RMESH 구조에서 선형사진트리의 집합 연산을 위한 상수 시간 알고리즘
공헌택(Heon Taek Kong),우진운(Jin Woon Woo) 한국정보과학회 1997 정보과학회논문지 : 시스템 및 이론 Vol.24 No.11
계층적 자료구조인 사진트리는 이진영상을 표현하는데 매우 중요한 자료구조이다. 사진트리를 메모리에 저장하는 방법 중 선형사진트리 표현 방법은 다른 표현 방법과 비교할 때 저장 공간을 효율적으로 절약할 수 있는 이점이 있기 때문에 사진트리와 관련된 연산의 수행을 위해 선형사진트리를 사용하는 효율적인 알고리즘 개발에 많은 연구가 진행되어 왔다. 본 논문에서는 RMESH 구조에서 3-차원 n×n×n 프로세서를 사용하여 선형사진트리에 대한 o(1) 시간 복잡도를 갖는 집합 연산, 즉 교집합, 합집합, 여집합, 차집합의 연산 알고리즘을 제안하였다. 제안한 알고리즘은 시간 복잡도 o(1)을 갖는 합병 알고리즘과 기존의 o(1) 정렬 알고리즘을 사용하였다. Quadtree, which is a hierarchical data structure, is a very important data structure to represent binary images, A linear quadtree representation as a way to store a quadtree is efficient to save space compared with other representations. It, therefore, has been widely studied to develop efficient algorithms to execute operations related with quadtrees. In this paper, we present o(1) algorithms for set operations - intersection, union, complement, difference - for linear quadtrees using three-dimensional n×n×n processors on RMESH. Our algorithms use o(1) time collapsing algorithm and o(1) time sorting algorithm.
RMESH 구조에서의 선형 사진트리 구축을 위한 상수 시간 알고리즘
공헌택(Kong Heon Taek),우진운(Woo Jin Woon) 한국정보처리학회 1997 정보처리학회논문지 Vol.4 No.9
Quadtree, which is hierarchical data structure, is a very important data structure to represent binary images. Since a linear quadtree representation as is a way to store a quadtree is efficient to save compared with other reqresentations. It is, however, complicated and takes a large amount of time to build the linear quadtree. In this paper, we present O(1) time a linear quadtree building algorithm for a n×n binary image using tree-dimensional n×n×n processors on RMESH structure. Our algorithm, by use of O(1) time collapsing algorithm and reported O(1) time sorting algorithm, is simpler and easier to understand than resently presented algorithm on PARBUS structure.