발표요지 : 고추 ( Capsicum spp . ) 의 배주배양을 통한 종간 잡종체 생성

백인열,김달웅,박규환 한국식물생명공학회 ( 구 한국식물조직배양학회 ) 1989 한국식물생명공학회 춘계학술연구발표회 Vol.1989 No.-

고차 전이함수를 이용한 해양구조물 거동의 비선형도 결정

백인열 한국해안해양공학회 1995 한국해안해양공학회 논문집 Vol.7 No.1

파하중과 해류하중을 받는 단일 자유도계를 동적 해석하여 비선형 거동을 나타냄을 보이고 고차의 비선형 전이함수를 포함한 모델을 적용하여 그 비선형 차수를 알아낸다. 먼저 구조물에 단일 정현파, 두 파의 합성파 그리고 불규칙파 하중을 차례로 가하면서 각 하중조건마다 세가지 비선형 요인의 효과를 조사한다. 이로부터 단일 자유도계의 공진주파수에서 파의 에너지는 존재하지 않지만 비선형 요인에 의해 응답 성분이 나타남을 보인다. 다음으로 Volterra 급수에 근거한 고차 전이함수(higher order transfer function)모델을 적용하여 유연한 단일 자유도계의 비선형 거동이 성공적으로 모델화됨을 보이며 또한 비선형성이 2차나 3차로 명백히 나타남을 보인다. Higher order nonlinear transfer functions are applied to model the nonlinear responses obtained Inn dynamic analysis of single degree of freedom systems (SDOF) subjected to wave and current loadings. The structural systems are subjected to single harmonic, two wave combination and irregular wave loading. Three different sources of nonlinearities are examined for each of the wave loading condition and it is shown that the nonlinear response appear at the resonance frequencies of the SDOF even when virtually no wave energy exists at those resonance frequencies. Higher order nonlinear transfer functions based on Volterra series representation are used to model the nonlinear responses mainly f3r the flexible systems and clearly shows the degrees of nonlinearity either as quadratic or cubic.

조류 하중을 받는 탄성 현수선 케이블의 동적 해석

백인열,장승필,윤종윤 한국지진공학회 1998 한국지진공학회논문집 Vol.2 No.2

수중 케이블의 동적 거동은 비선형 거동을 보이게 되는데 특히 기하하적 비선형성에 크게 영향을 받는다. 또한, 유체의 흐름으로 인하여 동적 거동의 해석은 더욱 복잡하고 어려워지기 때문에 해석적인 접근 방법에는 한계가 있다. 본 연구에서는 탄성 현수선 케이블요소에 동수력을 고려할 수 있게 하였다. 즉, 동수력을 받는 3차원 탄성 현수선 케이블를 정식화하고, 정적 및 동적 해석을 수행할 수 있는 유한요소 방법을 제시하였다. 동수력은 수정된 Morison 방정식을 이용하여 산정하였다. 제시된 방법으로 구한 수중케이블에 관한 동적 거동을 파악하려 하였으며, 정박 또는 예인에 사용하는 수중케이블의 경우 조류의 방향 및 케이블의 경사각에 따른 동적거동의 변화를 알아볼 수 있다. The dynamic behavior of the marine cable is essentially nonlinear and dominated by geometric nonlinearity. Furthermore, fluid drag force makes the problem more complex and difficult. Therefore, it has certain limitations to obtain the dynamic behavior of the marine cable by analytical method. The purpose of this paper is to apply the elastic catenary cable element to the problem of under water cable including the hydrodynamic effects of fluids. The static and dynamic formulations for the three-dimensional elastic catenary coble under water effects are derived and the finite element analysis procedures are presented. In the analysis, the hydrodynamic forces are modeled by modified Morison equation. A comparison of the results obtained using present method with previously published results showed the validity of present method. The dynamic behavior of the marine cable subjected to current is investigated using present method and it can be illustrated that the dynamic behavior of the marine cable subjected to current varies with the incident angle of the current and inclined angle of the cable.

소립 내병 다수성 나물용 신품종 " 새별콩 "

백인열,강성택,신두철,정명근,한원영,송석보,곽용호,문헌팔 한국육종학회 2001 한국육종학회지 Vol.33 No.3

A New Vegetable Soybean Cultivar, “Danmi 2” with free of Lipoxygenase 1 and 2

백인열,박금룡,한원영,김현태,오기원,이영수,이성희,강성택,오영진,고종민,신두철,오세관,정명근,강남숙,신상옥,서덕용,윤홍태,손창기,김용덕,김호영 한국육종학회 2006 한국육종학회지 Vol.38 No.5

“Danmi 2”, a new cultivar for vegetable soybean, was developed from the cross between “Seokryangput” and“YS1307” (Seokryangput/Milyang77) at Yeongnam Agricultural Research Institute and released in 2005. The pedigree of “Danmi2”, designated as Milyang 145 in 2002, was YS1307-2B-1-G-1. Vegetable soybean “Danmi 2” was characterized as lipoxygenase1- and 2-free, large seed, very short plant height, and lodging resistance. “Danmi 2” has determinate growth habit, white flower,coat with brown hilum and yellow cotyledon. Over 3 years of Korea regional adaptation tests (2003-2005) for vegetable soybean,“Danmi 2” showed moderate resistance to soybean mosaic virus and lodging, and higher resistance than the check cultivar “Hwae-omput”. Harvesting date of green pod in “Danmi 2” was Aug. 8 which was 4 days later than Hwaeomput and its stem height was9 cm shorter than Hwaeomput. In the same trials, fresh pod of “Danmi 2” (11.61 ton ha1) yielded 9% higher than Hwaeomput(10.68 ton ha1). “Danmi 2” had 6.7 cm fresh pod length, 12.7 m fresh pod width, 79.3 g 100-green seed weight, 41.1% greenseed protein content, and 20.0% green sed oil content. SDS-PAGE on grain storage protein shows that “Danmi 2” was deficient inlipoxygenase 1 and 2.

검정콩 녹색자엽 소립 신품종 ‘소청2호’

백인열,한원영,고종민,김현태,전명기,박금룡,이병원,이영훈,하태정,신상욱,심하식,문중경,오기원,강성택,조상균,윤홍태,이승수,손창기 한국육종학회 2013 한국육종학회지 Vol.45 No.1

‘소청2호’는 녹색 자엽의 검정콩으로 내재해성이 우수하고 가공용에 적합한 신품종육성을 목표로 숙기가 매우 늦은 대립 검정콩인 ‘밀양78호’와 소립 내재해 도입종인 ‘Peking’을 1996년 인공교배한 YS1262 조합으로 계통육종법으로 선발하였고 계통명은 ‘밀양182호’이다. 꽃은 백색이고 자엽색은 녹색이며, 입형은 장타원형이며 성숙기가 지나면 협의 개열에는 약하다. 성숙기는 10월 2일로 ‘청자콩’과 같이 다소 빠른 품종이며, 경장은 56 cm로 ‘청자콩’보다 10 cm 짧고 100립의 무게는 12.2 g인 소립인 품종이다. 도복에 강하며 포장 재배시험에서 콩모자이크 바이러스병은 다소 발생하였고, 불마름병에 대한 유묘 접종 및 포장반응은 ‘청자콩’과 비슷하나 약한 편이다. 종실성분으로 조단백 함량은 38.8%로 ‘청자콩’보다 다소 낮았고, 종실의 아이소플라본 함량은 2,031㎍/g으로 ‘청자콩’보다 높았다. 청국장 가공적성에서 ‘일품검정콩’보다 발효 정도는 다소 낮으나, 청국장 수율 및 풍취에서 우하였다. ‘소청2호’의 중남부지역 5개소의 평균 수량성은 ha당 2.00톤으로 ‘청자콩’ 대비 7% 증수하였다. A new black seed coat soybean variety, ‘Socheong 2’ was developed at the National Institute of Crop Science (NICS) in 2006. ‘Socheong 2’ was selected from the cross between ‘Milyang78’ and ‘Peking’. The preliminary, advanced and regional yield trials for evaluation and selection of this variety were carried out from 2005 to 2009. It has determinate growth habit, white flower, brown pubescence, black pod color, black seed coat, green cotyledon, elongated flattened seed shape, oval leaf shape and small seed size (12.2 grams per 100 seeds). And it has the same maturity as the check cultivar Cheongjakong. ‘Socheong 2’ has better seed quality than that of the check cultivar in isoflavone contents (2,031 ㎍/g), and it has good adaptability for ‘Cheongkugjiang’ and soybean malt. It also has been identified to have resistance to soybean mosaic virus symptom (SMV) which was the troublesome soybean diseases. The average yield of ‘Socheong 2’ was 2.00 ton per hectare in the regional yield trials carried out in five locations of Korea among seven from 2007 to 2009, which was 7 percent higher than that of the check cultivar ‘Cheongjakong’.

콘크리트 도로교 설계를 위한 저항계수 체계별 신뢰도 분석

백인열,상희정 한국도로학회 2011 한국도로학회논문집 Vol.13 No.2

As a background study to apply the reliability-based resistance factors to the domestic concrete bridge design code, a comparative study is conducted for the design results and the reliability indexes obtained by adopting different resistance factor formats to yield the design strength of concrete structures. The design results which are calculated by applying the section resistance factors of the current domestic design code and the material resistance factors of Eurocode are compared for the concrete beam bridge. The reliability index is calculated by considering the uncertainties involved in material, dimension and strength equation during the design procedure to get the strength of concrete structure. Also, the sensitivity analysis is performed to figure out which design variables have great impact on the reliability index. The resistance factors of the current domestic bridge design code, AASHTO LRFD and Eurocode are applied to the bridge design for flexure and shear strength and the results show that the resistance factors of the domestic code give the largest reliability indexes. It is observed that the probabilistic distribution of the live load makes difference for the reliability index and the yield strength of reinforcing steel and the live load have great impact on the reliability of both flexural and shear strength of concrete beam through the sensitivity analysis. 본 연구는 국내 콘크리트교량설계기준에 신뢰도기반 저항계수를 적용하기 위한 기초 연구로, 구조물의 설계강도를 산정하기 위하여 사용하는 저항계수체계에 따른 설계결과와 신뢰도지수를 비교분석하는 연구를 수행하였다. 현재 국내에서 적용하는 단면저항계수및 유럽에서 사용하는 재료저항계수를 적용하여 콘크리트 빔 교량들에 대하여 동일한 설계를 수행한 결과를 비교분석하였다. 콘크리트 구조의 강도를 산정하는데 관련된 재료, 치수 및 해석의 불확실성을 고려하여 설계의 안전율인 신뢰도지수를 산정하고, 신뢰도지수에 큰 영향을 미치는 설계변수에 대한 민감도 분석을 수행하였다. 휨강도와 전단강도에 대하여 설계를 수행하였으며, 현행 국내 도로교설계기준, 미국 AASHTO LRFD, 유럽 Eurocode의 저항계수를 적용한 결과 국내 기준의 저항계수에 따른 설계의 신뢰도지수가가장 컸으며, 활하중의 통계분포 형식에 따라 신뢰도지수에 차이가 있음을 보였다. 콘크리트 보의 휨과 전단에 대한 신뢰도지수에 미치는 영향은 철근의 항복강도와 활하중이 가장 큼을 민감도 분석결과를 통하여 알 수 있었다.

Reliability analysis of concrete bridges designed with material and member resistance factors

백인열,Eui-Seung Hwang,신수봉 사단법인 한국계산역학회 2009 Computers and Concrete, An International Journal Vol.6 No.1

Reliability analysis for a proposed limit state bridge design code is performed. In order to introduce reliability concept to design code, the proposed live load model is based on truck weight survey. Test data of domestic material strengths are collected to model statistical properties of member strengths. Sample RC and PSC girder sections are designed following the safety factor format of the proposed code and compared with the current design practice. Reliability indexes are calculated and examined for material and member resistance factor formats and sample calibrations of safety factors are presented. It is concluded that the proposed code provides reasonable level of reliability compared to the international design standards.

BWIM Using Measured Acceleration and Strain Data

백인열,이선웅,신수봉 한국비파괴검사학회 2011 한국비파괴검사학회지 Vol.31 No.3

A new BWIM(bridge weigh-in-motion) algorithm using both measured strain and acceleration data is proposed. To consider the effects of bridge vibration on the estimation of moving loads, the dynamic governing equation is applied with the known stiffness and mass properties but damping is ignored. Dynamic displacements are computed indirectly from the measured strains using the beam theory and accelerations are measured directly by accelerometers. To convert a unit moving load to its equivalent nodal force, a transformation matrix is determined. The incompleteness in the measured responses is considered in developing the algorithm. To examine the proposed BWIM algorithm, simulation studies, laboratory experiments and field tests were carried. In the simulation study, effects of measurement noise and estimation error in the vehicle speed on the results were investigated.

Analysis of Wave Force Induced Dynamic Response of Submerged Floating Tunnel

백인열,장성필,오창국,권장섭 대한토목학회 2004 KSCE JOURNAL OF CIVIL ENGINEERING Vol.8 No.5

Submerged Floating Tunnel (SFT) is a new structural concept for crossing water. The purpose of the present study is to develop a dynamic analysis program for SFT and investigate dynamic response characteristics of SFT subjected to external environmental wave load. The structure is modeled with 3-dimensional beam element and the fluid is assumed incompressible, invicid and irrotational and is analysed by boundary element method applying linear potential theory. Using the hydrodynamic coefficients of added mass, radiation damping and wave excitation force obtained by solving 2-dimensional diffraction problem, 3-dimensional structural analysis of SFT is performed in time domain and results are presented. The depth effect of SFT location on the hydrodynamic coefficients are illustrated as well as the effect of the frequency dependency of the coefficients which is taken into account in the analysis program.