Lettuce (Lactuca sativa L.) is one of the most important leafy vegetables in the world due to its health related benefits. Bitter sesquiterpene lactones (BSLs) are crucial secondary metabolites of lettuce which are useful in many physiological activities, and also has been used to relieve pain. This study was conducted to appraise the variability of phenotypic characteristics and the total content of BSLs in fifty lettuce germplasm. The germplasm collections exhibited wide variation in both qualitative and quantitative characters. The average plant weight was 333.3 g with a range from 60.0 to 700.0 g and the lactucin content was varied from 3.4 (IT265031) to 448.6 (IT300287) μg/g DW with an average concentration of 94.0 μg/g DW. Whereas lactucopicrin ranged from 6.8 (IT217859) to 2,714.9 (Superseonpung) μg/g DW with an average concentration of 805.8 μg/g DW. Total BSLs content was ranged from 19.6 (IT217859) to 2,821.9 (Superseonpung) μg/g DW with the average concentration of 899.8 μg/g DW. Significant (p≤0.05) differences in lactucin, lactucopicrin and total BSLs content were found among the germplasm collections. Leafy type lettuce germplasm collections originated from South Korea revealed the highest average total BSLs content (2,821.9 μg/g DW). Principal component analyses of lactucin and lactucopicrin generated based on leaf color and plant growth type yielded two principal components, PC1 and PC2, which accounted for 60.8 and 39.2 % of the total variance, respectively. Our study provides fundamental insights on phenotypic characteristics and the total content of lactucin and lactucopicrin of lettuce germplasm which may further help researchers and breeders to produce improved lettuce varieties.

국내 시설재배 상추의 시들음병에 대한 안정적 재배를 위해 농가에 보급 가능한 저항성 자원을 탐색하기 위하여 12개 국가에서 육성한 111개 도입자원의 시들음병 저항성 정도를 조사하였다. 1. 병원균 접종 후 14일째 공시한 저항성 표준품종인 ‘뚝섬적축면’과 감수성 ‘미풍포찹적축면’을 포함한 공시 자원들의 병징이 뚜렷하게 나타남. 2. 시들음병 저항성 정도 범위는 전혀 고사되지 않은 자원( 발병정도 0)부터 전체 고사하는 자원(발병정도 4) 까지 넓게 분포하여 전체 111개 자원에 대한 평균 발병정도는 2.6±0.19 이었음. 3. 전체 자원 중 IT 294125 등 7개 자원이 병징이 전혀 나타나지 않았고, 저항성 기준으로 정한 발병정도 0인 개체비율이 80%이상이고 발병정도가 3이상인 개체비율이 20% 이하인 자원은 IT 289569 등 16개 자원이었음. 4. 저항성을 보인 16개 자원 중 IT 289569 등 미국 원산이 11개, 터키 원산이 IT296680 등 4개, 중국 원산이 IT 301287로 1개이었음. 1) 상추 유형으로는, 결구상추가 IT289569 등 8개, 잎상추는 IT 296679 등 5개, 로메인 상추가 IT296680 등 2개, 줄기상추 1개(IT 301287) 5. 본 연구결과 시들음병 저항성을 보인 16개 자원은 시들음병 발생이 높은 농가에서 이용 가능한 품종으로 생각되나, 병 저항성 검정이 유묘 단계에서 이루어졌기 때문에 생육 전반의 종합적인 특성을 고려하여 우수자원을 선발하는 후속연구 필요

Plant genetic resources are fundamental materials for crop improvement to enhance productivity and an insurance against unforeseen threats to agricultural production. Continuous advancement in crop improvement depends on discovery of new sources of genetic variation, accurate identification of lines with favorable traits, and their efficient and judicious use. Core collections (~10% of the entire collection) and mini core collections (~10% of the core or ~1% of the entire collection) have been suggested as a gateway to enhance utilization of germplasm. Using passport data, characterization and evaluation data, core and/or mini core collections have been developed in chickpea, groundnut, pigeonpea, pearl millet, sorghum, finger millet and foxtail millet at ICRISAT, Patancheru, India. Evaluation of these subsets has resulted in identification of new sources of genotypic variation. The concept and process of developing mini core collections has been recognized worldwide as an “International Public Good” (IPG). Many national programs have shown immense interest in evaluating mini core collections for identification of new sources of variation for use in crop improvement programs. To date, 84 sets of mini core of chickpea, groundnut, pigeonpea, sorghum, pearl millet, foxtail millet and finger millet have been supplied to researchers in 13 countries. Feedback revealed that researchers in national programs were able to identify new sources of variation for favorable traits, such as early maturity, resistance to pests and diseases, large seed size, and high grain yield. Seeds of mini core collections could be available to researchers globally for research and training purpose.

한반도 풍력자원지도의 시계열 풍속벡터의 유사성을 유클리디안 거리로 정의하여 군집분석에 의해 바람권역을 분류하는 방법을 포항지역에 적용하였다. 풍력자원지도는 포항지역 기상탑 측정자료와의 비교를 통해 정확도를 검증하였다. 이때 풍력자원지도 와 기상탑 측정자료의 시간범위가 서로 상이하여, 재해석자료와의 측정-상관-예측을 이용하여 동기간으로 변환한 후 비교검증 하였다. 포항지역에 대한 바람권역 분류 결과, 계절별로 바람권역의 변화가 매우 큰 것으로 나타났으며, 이로부터 우리나라의 바람권역은 계절특성을 고려해야함을 확인하였다. 풍력자원지도의 공간해상도에 따른 바람권역 분류에서는 상대적으로 지형고도가 낮지만 바 람의 특성에 민감한 지형이 존재하며, 이러한 지형요소의 수치해석이 정확하게 반영되어야 바람권역 분류의 실질적인 설명력이 향상됨을 확인할 수 있었다. 본 연구를 통해 구축된 국지적 바람권역 분류방법은 풍력발전소 설계, 대기환경영향평가, 풍환경평가 등에 유용하게 활용될 것으로 기대된다.

This study is to compare and evaluate the estimating method of WTP(willingness to pay) for the valuation of oceans and fisheries resources with non-market goods characteristics using contingent valuation method. In general, when estimating parameters of the WTP function, we should take into account the assumption of probability distribution, inclusion of covariates, method of inducement of payment, and the treatment of 0 payment intention and resistance responses. This study utilizes survey data that was used to estimate the value of fisheries resource protection zones, with a total of 1,200 samples. The main results of this study are summarized as follows: First, the final willness to pay amount is estimated at a statistical significance of less than 1 percent, and the distribution of the final willness to pay amount is from ₩6,926 of the double bounded dichotomous model to ₩10,721 of the spike model. Second, the willness to pay amount based on assumptions about the normal and logistic probability distributions are estimated to be ₩9,429 and ₩9,370 respectively, so there was no significant difference. Third, the willness to pay amount of the single bounded dichotomous model and the double bounded dichotomous model are estimated to be ₩8,951 and ₩6,926 respectively, making a relatively large difference. Fourth, the willness to pay amount of the model without covariates and the model with covariates are estimated to be ₩9,429 and ₩8,951, respectively, so the willness to pay amount is underestimated when the covariates are included. Fifth, the Spike model that considers zero payment intention and resistance response estimates ₩10,405 as the highest payment in this study. Finally, the CVM analysis guidelines proposed by the Korea Development Institute (KDI) are estimated to be ₩9,749 and ₩10,405 respectively, depending on including no covariates and with covariates. Compared to other models, the final willness to pay amount is not estimated underestimated. Therefore this study suggests the use of KDI's guidance under government public policy projects. In view of these results, the estimating model for willness to pay amount model will be selected by considering the sample size, the suitability of the model, the sign of the estimated coefficient, the statistical significance, the ratio of the zero payment intention and the payment rejection. And, for CVMs on government public policy projects, it is desirable to estimate by the method proposed by the KDI.

The main purpose of this study is to explain fishery relation in the seas surrounding Korea and how the Prisoner’s Dilemma (PD), within game theory is applied to the region and suggest possible co-operative approaches in the region. The seas surrounding Korea are very productive fishing grounds with abundant fisheries resources because of the favourable marine environment, including its geographical features and physical oceanography. Nevertheless, Fishery relations among the coastal states in the region have been historically characterized by conflict rather than co-operation. Based on the PD game where there is always an incentive to do better by not co-operating, in order to ensure a share of the short-run benefits, fishing countries in the region have so far pursued the non-co-operative strategy of ‘don’t fish responsibly’ rather than the co-operative strategy of ‘fish responsibly’. Considering rapidly deteriorating situations in terms of fishery resources, regional co-operation among coastal states is urgently required to eliminate overfishing and increase fish stocks to sustainable levels. The West Sea/East China Sea and the East Sea, semi-enclosed seas, have unitary ecosystems, and many migratory fish species are shared between coastal states. Therefore, one countries’ efforts alone cannot effectively manage and conserve the fishery resources and close co-operation among coastal states is required. The 1982 UN Convention and other international instruments emphasize the role of RFOs in managing and conserving capture fisheries and encourage states to establish Regional Fishery organizations (RFOs) or strengthen existing RFOs to facilitate conservation and management for fish stocks. Therefore, an international regime is worthy of serious consideration in that it provides fundamental advantages for the conservation of fish stocks for the fishery characteristic of the region.

The primary purpose of this paper is to introduce the cases of fishery co-management, particularly in Korea. In recent, the fishery co-management between the government and fishermen has been brought an important shift of paradigm in a part of Korean fishery management policy. In case of Korea fisheries area, three fisheries cooperatives(which refer to purse sein fishery, trawl fishery, stow net fishery) have a minority of co-management programs. Generally, the main method of fishery co-management programs is ‘Fishery Closures’ among the programs, and others are restriction of fishing gear and fishermen educations. In spite of the efforts and time consumes of Korean government and fisheries cooperatives, much to our regret that it is hard to confirm visible results in an increased amount of fisheries resources so far because of the time constraint, namely fishery co-management programs have been conducted just since two to three years before. However, what’s certain is that fishery co-management programs make it possible to positively effect on both of area in fishermen and fisheries resources. Accordingly, it is necessary that Korean government and fishermen should extend the fishery co-management to other fishery areas as soon as possible we can in order to efficiently reduce administrative costs and effectively reserve fisheries resources.

The purpose of this study is to examine the effect of project-based organizational resources on the business performance in the resource-based view (RBV) and dynamic capability one and analyze their relationship through an integrated model. The RBV argues that firms get competitive advantages when they have VRIN characterized resources but dynamic capability view argues that RBV has its limitation under volatility so it enables them to obtain competitive advantages in ever changing environments. This study analyzes data collected from 270 survey questionnaires on the project management related staff at the project-based organization among major companies in Korea. The result demonstrates that two project organizational resources on strategic and executional management with VRIN characteristics are found to bring positive effects on the organizational dynamic capabilities and also the dynamic capabilities such as integration & reconfiguration, organizational learning are verified to bring meaningful positive effects on the business performance. On the other hand, unlike previous studies, ambidexterity has quite a weak effect on the business performance. Therefore, we expect that the resources of the project-based organization with VRIN lead to strengthen the firm’s business performance through organizational dynamic capabilities and produce high performance through the integrated model of RBV and dynamic capability one. The study has academic meanings that widely confirm the effects and characteristics of main elements of VRIN project organizational resources on the business performance of competitive advantage through the dynamic capabilities of the organization by the regression on the precedent studies regarding the project management resources and their relationship with the VRIO characteristics. The practical implication is that it is preferentially necessary for the organization to obtain VRIN resources and organizational dynamic capabilities, especially organizational learning to have sustainable competitive advantages.

Overfishing capacity has become a global issue due to over-exploitation of fisheries resources, which result from excessive fishing intensity since the 1980s. In the case of Korea, the fishing effort has been quantified and used as an quantified index of fishing intensity. Fisheries resources of coastal fisheries in the Korean waters of the East Sea tend to decrease productivity due to deterioration in the quality of ecosystem, which result from the excessive overfishing activities according to the development of fishing gear and engine performance of vessels. In order to manage sustainable and reasonable fisheries resources, it is important to understand the fluctuation of biomass and predict the future biomass. Therefore, in this study, we forecasted biomass in the Korean waters of the East Sea for the next two decades (2017~2036) according to the changes in fishing intensity using four fishing effort scenarios;  ,  , 0.5× and 1.5× . For forecasting biomass in the Korean waters of the East Sea, parameters such as exploitable carrying capacity (ECC), intrinsic rate of natural increase (r) and catchability (q) estimated by maximum entropy (ME) model was utilized and logistic function was used. In addition, coefficient of variation (CV) by the Jackknife re-sampling method was used for estimation of coefficient of variation about exploitable carrying capacity (CVECC). As a result, future biomass can be fluctuated below the BPY level when the current level of fishing effort in 2016 maintains. The results of this study are expected to be utilized as useful data to suggest direction of establishment of fisheries resources management plan for sustainable use of fisheries resources in the future.

본 연구는 자원기반이론 관점에서 우리나라 중소기업의 기술협력 성과를 살펴보고자 하였다. 해당 이론적 관점에서는 기술협력의 동기가 기술적 자원의 보완성이 강조된다는 점을 고려하여 분석 대상의 기업군을 기술수준에 따라 하이테크(high technology), 미드테크(medium technology), 로우테크(low technology) 등 세 단계로 구 분하였으며, 기술협력 파트너를 기술적 자원 및 역량을 기준으로 대기업, 중소기업, 대학, 연구기관으로 구분하고, 각각의 협력관계에 따른 혁신성과를 분석하였다. 분석 결과, 우리나라 중소기업의 기술수준별 그리고 협력 파트너에 따라 기술협력 성과에 미치는 영향은 상이한 것으로 나타났다. 특히 하이테크 중소기업의 경우 대학과의 협력에서 긍정적으로 효과를 확인할 수 있었음에 반해 미드테크의 경우 대학과 대기업과의 협력, 로우테크의 대학과 대기업은 물론 중소기업과의 협력에서도 유의한 성과를 보였다. 비록 기술 수준별로 기술협력의 유의한 성과가 선호체계를 가진다는 흥미로운 결과에도 불구 하고 본 논문이 단년도 횡단면 자료에 근거하고 있는 점을 고려하여 해석 될 필요가 있 다

최근 기업의 지배구조와 기업의 사회적 책임은 기업의 생존 및 성장과 관련된 주요 이슈로 부상 하였다. 많은 연구들이 기업의 지배구조와 기업의 사회적 성과 간의 관계를 분석하였으나, 대부분의 연구는 서구 국가 기업들을 대상으로 진행되었다. 이에 본 연구는 중국 기업의 기업 지배구조가 기업의 사회적 성과에 미치는 영향을 분석하여 기존 연구의 한계를 극복하고자 하였다. 구체적으로는 기업 지배구조의 국제화(이사회 임원진의 해외경험, 외국인 투자자의 소유지분)가 기업의 사회적 성과에 미치는 영향을 분석하였으며, 기업 지배구조의 국제화와 기업의 사회적 성과 간 관계를 조절하는 기업의 여유자원의 효과를 검증하였다.

본 연구는 흑산도 산림유전자원보호구역을 대상으로 산림식생구조를 파악하고자 수행하였으며, 2017년 6월부터 2017년 8월까지 총 59개 조사구에서 식생조사를 실시하였다. Z-M 식물사회학적 방법으로 산림식생 유형을 분류하고 식생단위별 구성종의 중요치와 종다양도를 분석하였다. 산림식생유형분류 결과 최상위 단위에서 동백나무군락군으로 분류되었으며, 군락단위에서는 황칠나무군락(식생단위 1), 소사나무군락, 동백나무전형군락(식생단위 6)의 3개 군락으로 분류되었다. 소사나무군락은 회양목군(식생단위 2), 진달래군(식생단위 3), 왕머루군(식생단위 4), 소사나무전형군 (식생단위 5)의 4개 소군으로 분류되었다. 식생단위별 평균상대우점치 분석 결과 식생단위 1은 붉가시나무, 식생단위 2는 소사나무, 식생단위 3은 곰솔, 식생단위 4는 소나무, 식생단위 5와 6은 구실잣밤나무가 각각 우점치가 가장 높게 나타났다. 종다양도 분석결과 식생단위 2의 종풍부도, 종다양도, 종균재도가 가장 높았으며, 종우점도는 식생단위 6이 가장 높았다. 흑산도 산림유전자원보호구역의 6개 식생단위와 12개 종군에 대한 군집생태학적 접근의 관리방안이 필요할 것으로 판단되었다.

이 연구에서는 자원봉사센터의 지원체계와 운영체계에서 나타나는 문제점을 다각도로 분석하고 자원봉사 센터의 전문성 확보 및 활성화 방안을 도출하고자 한다. 자원봉사관리에 대한 운영 실태를 분석했을 때 현재 한국의 자원봉사센터 문제점은 다음과 같다. 먼저 자원봉사에 대한 체계적인 관리가 결여되어 있을 뿐 아니라 자원봉사단체간 의 협력적인 네트워크가 제대로 형성되어 있지 않아 관리의 효율성을 저하시키고 있다. 또한 자원봉사관리자의 전문성이 부족하고, 자원봉사관리자에 대한 교육과정이 미비하며 자원봉사단체에 대한 정부의 지원도 매우 열약한 실정이다. 본 연구자는 이러한 문제점을 해소하기 위하여 다음과 같은 개선방안을 제시하고자 한다. 첫째, 자원봉사 관련 조례제정과 제도적 지원이 필요하다. 둘째, 각 부처별 자원봉사센터가 효율적으로 운영되어야 한다. 셋째, 자원봉사 관리자의 전문성 강화가 필요하다. 넷째, 자원봉사자 관리를 효율적으로 할 수 있어야 한다. 다섯째, 프로그램 개발 기능 및 수요처 개발을 강화하고 센터와 지역사회의 관계 증진할 필요가 있다. 마지막으로 안정적인 예산확충과 자원봉사 전담인력 확보가 절실히 필요하다. 따라서 자원봉사센터 활성화를 위해서는 공공부문에서는 과감한 재정 및 제도적 뒷받침을 마련해 주어야 하며, 민간 부문에서는 자발적인 활동이 될 수 있도록 자율성을 최대한 보장해 주어야 한다.

본 연구는 일반 노동자를 대상으로 직무요구(업무 후 모바일기기 사용)가 구성원들의 직무소진에 미치는 영향을 검증하였다. 또한 직무소진에 대한 업무 후 모바일기기 사용과 또 다른 직무요구(조직정치지각)와 직무자원(상사 지원)의 3차항 상호작용 효과를 실증분석하였다. 일반 노동자 172명을 대상으로 한 연구결과를 정리하면 다음과 같다. 첫째, 조직구성원들이 지각하는 업무 후 모바일기기 사용은 직무소진에 통계적으로 유의미한 정(+)의 영향을 미쳤다. 둘째, 직무소진에 대한 업무 후 모바일기기 사용, 조직정치지각 및 상사의 지원의 3차항 조절효과를 실증하였다. ① 조직내 불공정한 정치적 환경이 높은 환경에서 직무요구(업무 후 모바일기기 사용)가 낮고, 직무자원(상사의 지원)이 높은 집단에 속한 구성원들의 직무소진이 가장 낮게 나타났다. ② 그러나 불공정한 정치적 환경에서는 상사의 지원이 적극적이더라도 업무 후 모바일기기 사용이 높은 경우에는 구성원들의 직무소진이 매우 높게 나타났다. ③ 또한 불공정한 정치적 환경에서는 상사의 지원이 낮은 경우에는 업무 후 모바일 기기 사용과 관계없이 구성원들이 지각하는 직무소진은 높은 수준을 유지하였다. ④ 조직 내 정치적 환경이 낮은 집단에서는 상사의 지원과 관계없이 업무 후 모바일기기 사용이 높은 집단이 낮은 집단에 비해 직무소진이 전반적으로 높았다. 본 연구결과를 바탕으로 시사점과 연구의 한계점 및 향후 연구방향이 논의되었다.

Acoustic surveys were conducted in the seas surround the South Korea (South Sea A, South Sea B (waters around the Jeju Island), West Sea and East Sea) in spring and autumn in 2016. First, the vertical and horizontal distributions of fisheries resources animals were examined. In most cases vertical acoustic biomass was high in surface water and mid-water layers other than South Sea A in autumn and West Sea. The highest vertical acoustic biomass showed at the depth of 70-80 m in the South Sea A in spring (274.4 m2/nmi2) and the lowest one was 10-20 m in the West Sea in autumn (0.4 m2/nmi2). With regard to the horizontal distributions of fisheries resources animals, in the South Sea A, the acoustic biomass was high in eastern and central part of the South Sea and the northeast of Jeju Island (505.4-4099.1 m2/nmi2) in spring while it was high in eastern South Sea and the coastal water of Yeosu in autumn (1046.9-2958.3 m2/nmi2). In the South Sea B, the acoustic biomass was occurred high in the southern and western seas of Jeju Island in spring (201.0-1444.9 m2/nmi2) and in the southern of Jeju Island in autumn (203.7-1440.9 m2/nmi2). On the other hand, the West Sea showed very low acoustic biomass in spring (average NASC of 1.1 m2/nmi2), yet high acoustic biomass in the vicinity of 37 N in autumn (562.6-3764.2 m2/nmi2). The East Sea had high acoustic biomass in the coastal seas of Busan, Ulsan and Pohang in spring (258.7~976.4 m2/nmi2) and of Goseong, Gangneung, Donghae, Pohang and Busan in autumn (267.3-1196.3 m2/nmi2). During survey periods, fish schools were observed only in the South Sea A and the East Sea in spring and the West Sea in autumn. Fish schools in the South Sea A in spring were small size (333.2 ± 763.2 m2) but had a strong SV (–49.5 ± 5.3 dB). In the East Sea, fish schools in spring had low SV (–60.5 ± 14.5 dB) yet had large sizes (537.9 ± 1111.5 m2) and were distributed in the deep water depth (83.5 ± 33.5 m). Fish schools in the West Sea in autumn had strong SV (–49.6 ± 7.4 dB) and large sizes (507.1 ± 941.8 m2). It was the first time for three seas surrounded South Korea to be conducted by acoustic surveys to understand the distribution and aggregation characteristics of fisheries resources animals. The results of this study would be beneficially used for planning a future survey combined acoustic method and mid-water trawling, particularly deciding a survey location, a time period, and a targeting water depth.