분자생물학적 기법을 이용한 Interseeding률 평가

정승호,임덕종,장덕환,Jung, Seung-Ho,Lim, Deuk-Jong,Jang, Duk-Hwan 한국잔디학회 2010 한국잔디학회지 Vol.24 No.2

최근 국내 일부 골프장에서는 그린을 공사하지 않고 신품종으로 교체할 수 있는 인터씨딩에 대한 관심이 높아지고 있다. 하지만 이에 대한 어떤 연구나 평가 방법 등이 발표되어 있지 않다. 따라서 본 연구에서는 분자생물학적 기법을 이용한 인터씨딩률을 조사하여 그 실효성을 평가하고자 수행하였다. 우정힐스골프장은 기존 품종인 Penncross에 Penn A-4 품종을 1회 인터씨딩하였고, 레이크사이드골프장은 기존품종인 penncross에 CY-2 품종을 3회 인터씨딩하였다. SCAR marker를 이용한 인터씨딩율은 1회 인터씨딩한 우정힐스골프장은 치환율이 20%였고, 3회 인터씨딩한 레이크사이드골프장은 37.3%였다. 1회와 3회 인터씨딩에 의한 치환율의 차이는 15.3% 정도였다. 하지만 3회 인터씨딩한 지역을 답압별로 세부하여 1회 인터씨딩율과 비교하여 보면, 답압이 가장 적게 이루어진 지역은 47.2%로 대략 50%정도가 치환되었다. 이는 1회의 치환률과 비교하여 173%이상 치환률이 증가하였다. 따라서 인터씨딩은 1회 실시하는 것보다는 3회 실시한 경우에 치환률이 훨씬 높아, 향후 인터씨딩을 실시할 경우에는 다년간의 계획을 수립하여 인터씨딩을 실시하는 것이 효과적일 것으로 판단된다. 따라서 본 연구에서는 소량의 시료만을 이용한 인터씨딩률에 대한 분석이 가능하였고, 유전분석을 이용한 인터씨딩율 조사를 통해 현재 시행하고 있는 인터씨딩 방법에 대한 기술 개선에 많은 도움이 있을 것으로 판단된다. Recently, many domestic golf course have showed interest in introducing new cultivars into existing putting greens without reconstruction. But, any report and survey method for interseeding substitute ratio haven't been published. Therefore, this study was conducted to evaluate the effectiveness for interseeding by investigating how many interseeding plants were introduced into existing putting green by using molecular biologic tool. The Woo Jung Hills Country Club was one time introduced penn A4 into penncross putting green. The Lake Side Country Club was three times introduced CY-2 into penncross putting green. The interseeding substitute ratio using SCAR markers was 20% in the Woo Jung Hills Country Club and 35.5% in Lake Side Country Club. The interseeding putting green in Lake Side Country Club was investigated to three site, strong pressure, middle pressure and weak pressure. These substitute ratios were strong pressure 27.1%, middle pressure 37.3%, and weak pressure 47.2%. The data indicated that an interseeding substitute ratio was more increased three times than one time to introducing new cultivar into existing putting green. A long-term program should be made in order to exchange existing cultivar in putting green without reconstruction.

Customer-Supplier Joint Action & Shared Results

정승호,Jung, Seung-Ho 대한산업공학회 2000 산업공학 Vol.13 No.3

The purpose of this research is to study customer-supplier relationships, particularly their partnerships, to help managers and practitioners successfully design, develop, implement and deploy tools and joint practices as a means for an effective supply chain management (SCM). To achieve this purpose, a total of 1,811 potential survey questionnaire respondents responsible for purchasing, sales/marketing, quality-, and production- or operations-related functions of U.S. private manufacturing companies in SIC 35, 36, and 37 were used to collect quantitative data. Using 172 usable survey questionnaire responses, eight hypothesized relationships were tested using two independent (joint use of specific tools and joint practices) and four dependent variables (informed partners, role integrity, conflict resolution, and mutuality). From the overall perspective (customer+supplier), organizations with higher levels of joint action have higher degrees of informed partners whereas organizations with higher levels of joint action resolve conflicts formally and do not have higher degrees of mutuality.

Tools, Joint Practices, and Performance Outcomes of Customer-Supplier Partnerships

정승호,Jung, Seung-Ho 대한산업공학회 2001 산업공학 Vol.14 No.3

The purpose of the study is to identify specific tools and joint practices used in customer-supplier partnerships and to investigate performance outcomes resulting from using the identified tools and joint practices. To achieve the purpose, related literatures in the area of marketing, purchasing, and management systems engineering are reviewed. Successful and world-class supply and/or supplier management cases are examined in-depth as well. Before addressing the purpose of this study, quality experts' assertions on and historical perspective of Supply Chain Management(SCM) and general issues on customer-supplier partnerships are also mentioned.

새로운 Acyclonucloside의 합성 : 새로운 $N_1$-Substituted 5-Fluorouracil 유도체의 합성과 그 특성에 관한 연구

정승호,윤용진,이종광,Seung Ho Jung,Yong Jin Yoon,Chong Kwang Lee 대한화학회 1991 대한화학회지 Vol.35 No.3

합성된 2-chloroethyl acrylate를 출발물질로 이용하여 5-fluorouracil의 $N_1$-위치에 각각 hydroxyethyl, acryloyloxyethyl, poly(acryloyloxyethyl)기를 가진 5-fluorouracil 유도체를 높은 수율로 얻었다. 이들 유도체들과 HCl과의 가수분해속도를 물-에탄올(1:1) 혼합용매에서 UV 분광기를 이용하여 측정하였다. 1-hydroxyethyl-5-fluorouracil, 1-acryloyloxyethyl-5-fluorouracil 및 Poly(1-acryloyloxyethyl-5-fluorouracil)의 가수분해속도는 각각 $k=1.38{\times}10^{-4}$sec, $9.25{\times}10^{-5}$/sec, $4.16{\times}10^{-5}$/sec 이었다. 또한, 합성된 5-fluorouracil 유도체의 열분해성에 대해 논의하였다. $N_1-alkyl-5-fluorouracil$ derivatives from 2-chloro-ethylacrylate(CEA) were synthesized. The reaction of 5-fluorouracil(5-FU) with 2-chloroethyl acrylate gave 1-hydroxyethyl-5-fluorouracil(HEFU) in 70% yield. The treatment of HEFU with acryloyl chloride afforded 1-acryloyloxyethyl-5-fluorouracil (AOEFU). Poly(1-acryloyloxyethyl-5-fluorouracil)[Poly(AOEFU)] was also synthesized from 5-fluorouracil and Poly(CEA). The hydrolysis rates of $N_1-alkyl-5-fluorouracil$ derivatives were observed by means of UV spectrophotometer at 265 nm in ethanol-water(1 : 1); k = the constant of hydrolysis rate, $k=1.38{\times}10^{-4}$/sec for HEFU, $k=9.25{\times}10^{-5}$/sec for AOEFU, $k=4.16{\times}10^{-5}$k = 4.16 ${\times}$ $10-5}sec$ for Poly(AOEFU). The differential thermal analysis and thermogravimetry of 5-fluorouracil derivatives have been discussed.

기계적 결함이 있는 원자로 내부구조물의 유한요소해석

정승호,박진석,김태룡,Jung, Seung-Ho,Park, Jin-Seok,Kim, Tae-Ryong 대한기계학회 1997 大韓機械學會論文集A Vol.21 No.8

This paper concerns with the finite element analysis of reactor internals with structural faults. For investigating the influence of hold-down spring faults on dynamic characteristics of CSB (core support barrel), reactor internals of Ulchin-1 nuclear power plant are modeled using finite element method and simulated with artificial defects on the hold-down springs. To prove the validity of the finite element models, the calculated natural frequencies of CSB in normal state are compared with those from the measurement results, which shows good agreement. According to results of finite element analysis, CSB beam mode natural frequency decreases by 4.5% in the case of 10% partial relaxation of hold-down springs, and decreases by 18.4% in the case of 20%. The range of shell mode natural frequency change is within 5.3%.

일반적인 연결선 구조의 해석을 위한 효율적인 행렬-벡터 곱 알고리즘

정승호,백종흠,김준희,김석윤,Jung, Seung-Ho,Baek, Jong-Humn,Kim, Joon-Hee,Kim, Seok-Yoon 대한전자공학회 2001 電子工學會論文誌-SD (Semiconductor and devices) Vol.38 No.12

본 논문은 이상적인 균일한 무손실 유전체를 갖는 일반적인 3차원 연결선 구조에서의 커패시턴스 추출 시, 널리 사용되는 일차 대조법(First-order collocation) 외에 고차 구적법을 결합하여 사용함으로써 정확성을 제고하고, 반복적 행렬-벡터의 곱을 효율적으로 수행하기 위한 알고리즘을 제안한다. 제안된 기법은 연결선에서 전기적 성질이 집중되어 있는 코너나 비아를 포함한 경우에 일차 대조법 대신에 구적법을 이용하여 고차로 근사함으로써 정확성을 보장한다. 또한, 이 기법은 경계 요소 기법에서 행렬의 대부분이 수치적으로 저차 계수(low rank)를 이룬다는 회로상의 전자기적 성질을 이용하여 모형차수를 축소함으로써 효율성을 증진한다. 이 기법은 SVD(Singular Value Decomposition)에 기반한 저차 계수 행렬 축소 기법과 신속한 행렬의 곱셈 연산을 위한 Krylov-subspace 차수 축소 기법인 Gram-Schmidt 알고리즘을 도입함으로써 효율적인 연산을 수행할 수 있다. 제안된 방법은 허용 오차 범위 내에서 효율적으로 행렬-벡터의 곱셈을 수행하며, 이를 기존의 연구에서 제시된 기법과의 성능 평가를 통하여 보인다. This paper proposes an algorithm for the capacitance extraction of general 3-dimensional conductors in an ideal uniform dielectric that uses a high-order quadrature approximation method combined with the typical first-order collocation method to enhance the accuracy and adopts an efficient matrix-vector product algorithm for the model-order reduction to achieve efficiency. The proposed method enhances the accuracy using the quadrature method for interconnects containing corners and vias that concentrate the charge density. It also achieves the efficiency by reducing the model order using the fact that large parts of system matrices are of numerically low rank. This technique combines an SVD-based algorithm for the compression of rank-deficient matrices and Gram-Schmidt algorithm of a Krylov-subspace iterative technique for the rapid multiplication of matrices. It is shown through the performance evaluation procedure that the combination of these two techniques leads to a more efficient algorithm than Gaussian elimination or other standard iterative schemes within a given error tolerance.

악성 조직구증

정승호(Seung Ho Jung),황규왕(Kyu Wang Whang),김영근(Young Keun Kim) 대한피부과학회 1992 대한피부과학회지 Vol.30 No.5

Malignant histiocytosis(MH) is a rapidly progressive and usally fatal disorder characterized clinically fever, generalized weakness, lymphadeno athy, hepatosplenomegaly accompanied by jaundice, and purpura. The frequency of skin manifestations has been repoterd about 15% of MH patients. Papules, plaques and niidules are commonly met. Histopathologically MH shows infiltrations of atypical histiocyte; with uarious maturity in many organs including skin. We present a case of a 32-year-old female with MH involving not only lymph node, liver, spleen and bone marrow but also skin with vaorious features ; erythematous papules, annular purpuric patches, subcutaneous nodules and hemomagic nodules. Immunohist,ochemically the majority of patients atypical histiocytes in lesional skin shows a-1 antitrysin positive, but lysozyme negative. It may suggest that these are poorly differentiated atypical histiocytes rather than well differentiated ones. (Kor J Dermatol 1992;30(5):720-726)

동서양 비례의 차이에 대한 이해를 돕기 위한 인터랙티브 인스톨레이션

정승호(Jung, Seung-Ho),김건동(Kim, Geon-Dong) 한국디자인학회 2017 한국디자인학회 학술발표대회 논문집 Vol.2016 No.10

경상남도 하동의 지질 유산

정승호(Seung-Ho Jung),유영완(Yeong-Wan Yu),김태형(Tae-Hyeong Kim),임종덕(Jong-Deock Lim),조운연(Woon-Yeon Jo),공달용(Dal-Yong Kong) 대한지질학회 2013 대한지질학회 학술대회 Vol.2013 No.10

중학교 학생들의 자살에 대한 인식도 조사

정승호(Seung-Ho Jung),이상은(Sang-Eun Lee),박판순(Pan-Soon Park),이순득(Soon-Deuk Lee),최혜진(Hye Jin Choi),이희원(Hee Won Lee),김철응(Chul-Eung Kim) 대한소아청소년정신의학회 2013 소아청소년정신의학 Vol.24 No.1

Objectives:The aim of this study was to examine attitudes of middle-school students toward happiness, suicide, and factors associated with suicide. Methods:A self-administered questionnaire was used in a cluster sample of 1,319 middle-school students (male 793, female 526). Data were obtained on a wide range of constructs regarding their attitude towards happiness, suicidal ideation and attempts, and factors associated with suicide. Results:Middle-school students choose ‘love within family’ as most important factor for their happiness. Subjective mental health status was mostly associated with happiness. Subjects in lower socioeconomic status tended to respond their mental health status was not good and have more suicidal idea. 48.7% of subjects had permissive attitudes toward suicide, especially, girls. However, 65.0% responded that suicide was preventable problem. Compared to older people, middle-school students perceived that environmental factors were more important than innate and personal factors for suicide. Conclusion:Results of the study indicate that middle-school students have permissive attitudes toward suicide, but positive attitudes for the prevention of suicide. This suggest that education in these age group could be effective for the prevention of suicide. Also, approaches to suicide prevention programs should be developed based on the family intervention. Especially, we should care about girls and adolescents in lower socioeconomic status.