A new spore-less cultivar Lentinula edodes ‘Daedam’ was bred from monokaryotic strains of ‘LE15401-24’ and ‘LE192118-10’. The optimum temperature for mycelial growth of ‘Daedam’ on potato dextrose agar was 22~25oC. Total cultivation period of the new cultivar, from inoculation to its first harvest, was 134 days, similar to that of the control cultivar ‘Hwadam’. Total yield of ‘Daedam’ was 222g per 3kg substrate, and was lower than that of control cultivar(266.0g). The fruiting body of ‘Daedam’ had a thick and small pileus and a longer stem compare to control cultivar. As a result of a analyzing the productivity of ‘Daedam’ on the different substrate types, the biological efficiency was 26.7% in the 1.2kg cylindrical substrate(CS), which was higher than that of the 3kg rod-type substrate(RS). 'Daedam' had a similar yield compared to 'Hanacham' in first fruiting body production, but the cultivation period was 40 days shorter. Therefore, 'Daedam' can only harvest fruiting bodies once, it is thought that it can be used as spore-less oak mushroom cultivar for short-term cultivation instead of 'Hanacham' in mushroom farms.

This study aims to evaluate the level of reproducibility of the marketing field. The research is motivated because many significant published research findings in various scientific areas, including marketing, have been found to be false or only partially replicable, a phenomenon labelled Reproducibility Crisis. This crisis is partly due to the strong overreliance on frequentist statistics and the misuse and misinterpretation of p-values in the Null Hypothesis Significance Testing (NHST) framework. This study offers two main contributions: first, it develops a methodological, quantitative evaluation of the most-cited published papers in marketing history in its four top journals, creating an overall index of marketing science reproducibility. Second, it analyzes how misuse and misinterpretation of p-values and frequentist statistics have undermined marketing science's reproducibility and discusses possible solutions for these problems. We selected a representative sample of the marketing literature, screening the papers using hierarchical classification criteria and the Web of Science (WoS) database to select the most-cited papers.

Environmental noise occurring on ships has various negative impacts on sailors’ health conditions such as hearing loss, sleep disturbance, psychological stress, etc., so regulations on them are required, but the ship noise regulations are usually applied to only large merchant ships. Although regulations on fishing boats with strong fishing and work intensity are determined to be necessary, there has been little relevant research. This study, therefore, attempted to measure the environmental noise of coastal composite fishing vessels less than two tones and provide the results of basic research on the noise regulations for fishing vessels. It measured them by setting the measurement zones as after side, midship and fore side, and based on the criterion of IMO MSC 337(91). The findings showed that the noise of them often exceeded 75dB(A), the criterion of the open deck noise in the zones in which the load of main engines was increased. In particular, the noise of the stern was as high as 92.2dB(A) during the full ahead. Hence, hearing loss may be caused by such a noise, so a variety of regulations on it are determined to be necessary.

본 연구는 10톤 미만 어선의 내항성능 기반의 해양활동 기준 마련을 위한 기초 연구이다. 10톤 미만의 어선은 우리나라 등록어 선의 약 95%를 차지하고 있고 항해, 조업 등의 해양활동 중에 사고와 인명손실도 많이 발생하고 있다. 이에 따라 해양수산부에서는 어선 출항통제기준을 정하여 풍랑주의보 발효 시 어선의 운항을 제한하고 있지만 선박톤급과 파고에 따른 기준 없이 동일하게 적용하고 있어 해양활동 시 파고에 의한 선박의 동요에 많은 차이가 있을 수 있다. 파고에 의한 선박의 동요는 승선감 및 장비의 성능을 떨어뜨려 해양 사고의 요인이 될 수 있으므로 항해, 조업 등 안전한 해양활동 확보를 위해서 파랑 중 내항성능 검토가 필요하다. 하지만 어선에 대한 내 항성능 기반 기준 마련 검토는 부족한 실정이다. 이에 따라 우리나라 연안조업어선 10톤급(G/T 9.77톤) 어선을 대상으로 내항성능을 평가 하였고 설정된 내항성능 평가 기준의 Operation과 Survival 기준을 적용하여 유의파고와 선속에 따른 해양활동 충족 정도를 해석하였다. 해 석 결과 횡동요는 유의파고 0.4m부터 Operation 기준을 초과하였고 유의파고 2.2m부터 Survival 기준을 초과하는 것으로 나타났다. 종동요 는 유의파고 1.7m부터 Operation 기준을 초과하였고 유의파고 3.0m까지 Survival 기준은 넘지는 않았으나 횡동요가 유의파고 2.2m부터 Survival 기준을 초과한 상태로 안전하다고 할 수 없다. 따라서 10톤 미만 어선은 풍랑주의보 발효 전까지 출항은 가능하나 해양활동 관련 하여 내항성능 평가 기준에는 충족하지 못한다고 볼 수 있다. 본 연구에서는 10톤급 어선을 대상으로 제한적으로 평가 되었으나 해양활 동 기준 마련에 큰 도움이 될 것으로 판단된다.

People differ greatly in their capacity to persist in the face of challenges. Despite significant research, relatively little is known about cognitive factors that might be involved in perseverance. Building upon human threat-management mechanism, we predicted that perseverant people would be characterized by reduced sensitivity (i.e., longer detection latency) to threat cues. Our data from 5,898 job applicants showed that highly perseverant individuals required more time to correctly identify anger in faces, regardless of stimulus type (dynamic or static computer-morphed faces). Such individual differences were not observed in response to other facial expressions (happiness, sadness), and the effect was independent of gender, dispositional anxiety, or conscientiousness. Discussions were centered on the potential role of threat sensitivity in effortful pursuit of goals.

국내 표고 품종 다양화로 버섯산업 경쟁력을 높이고자 ‘참아람’과 청흥버섯영농조합 보유균주인‘E140025’을 이용하여 교잡육종법을 통해 ‘청흥1호’를 육성하였다. 자실체 특성 결과 대조품종 보다 갓직경은 작고, 대길이는 길고, 대가 굵어 개체중이 무거웠다. 초발이기간은 ‘청흥1호’ 24일, ‘설백향’4일, ‘산조701호’ 8일로 발이까지 대조품종보다 20일정도 늦었다. 자실체 수량은 가장적게 나타났지만, 유효수량은 ‘청흥1호’ 6,498 g ‘설백향’ 4,290 g, ‘산조701호’ 5,022 g으로 가장 높았다. URPPrimer를 이용한 다형성검정을 통해 6개의 Primer에서 모본과 다른 PCR 밴드를 확인하였다. 이상의 결과, 재배기 간이 길지만 개체중과 유효수량이 우수한 무포자 신품종을 육성하였다.

이 논문은 총톤수 5톤 미만 선박의 소형선박조종사 면허제도 도입과 관련하 여 선원의 해기능력을 확보하고 검증하기 위한 교육훈련에 관한 구체적 시행 방안을 마련하는 것을 그 목적으로 한다. 이 연구의 방법론으로 총톤수 5톤 미만인 선박의 해양사고 발생률과 그 원인에 관한 통계분석, 소형선박에 승무 하는 선원과 선주를 대상으로 한 설문조사와 분석 그리고 대만, 일본 및 캐나 다의 사례조사와 문헌연구를 채택하였다. 총톤수 5톤 미만 선박의 소형선박조종사면허 제도 도입과 함께 시행되어야 할 선원교육 과정은 승무경력을 기준으로 유경험자와 신규유입자로 구분하여 시행되어야 할 필요성이 있다. 또한 신면허 제도의 정착을 위해서 신규유입자 를 대상으로 한 교육을 별도로 시행하되 해외사례를 참조하여 교육기간 중에 시험평가가 동시에 이루어질 수 있는 방안이 고려되어야 한다. 이를 위해서 실 선훈련과 시뮬레이터훈련 방안을 병행해서 고려할 필요성이 있으며 이 연구의 구체적 실행을 위하여 법률개정과 사회적 합의 도출 등의 후속조치가 이루어질 필요가 있다.

The US has entered a new era of crisis. President Biden has just been inaugurated. He faces historical challenges to return the US to global leadership. The primacy purpose of this article is to discuss national security and trade policy in the new Biden administration. First, I look at the historic and dubious claims made by the Trump administration in utilizing national security as a cover for protectionist trade actions, as well as at the federal court cases addressing these claims. I then assess the cases that have come before the WTO over the last two years, raising for first time the issue of the national security exception under GATT Article XXI. Finally, I conclude that President Biden’s overwhelming priority is to resurrect American democracy and alliances. But he will also need to address a broad range of trade issues and to restrict reliance on national security as a cover for populist and protectionist policies.

PURPOSES : In this study, the luminance of night road markings was measured in a tunnel of length 200 m or less. The purpose of the project is to evaluate the consistency of night road markings. METHODS : In this study, field measurements were conducted to achieve the purpose of this study. Five tunnels with lengths of less than 200 m were selected to measure the luminance value of the road markings. The analysis of the difference in road markings between the inside and outside points of the tunnel and the analysis of alternative tunnels and points were used to assess the consistency of road markings in tunnels. RESULTS : The average luminance of the tunnel’s night road markings was 9.7, and the standard deviation was 3.0. The analysis of variance for the tunnel and point indicated that the p-value was less than 0.05 and was inconsistent. CONCLUSIONS : In conclusion, consistency was assessed by measuring the luminance value of the short tunnel of length 200 m in the Cheongju Sangju Expressway, and it was confirmed that the luminance of the road markings was not consistent with the tunnel and point. Finally, it is necessary to control night lightings on roads outside the tunnel or adjust lighting facilities in the tunnel to enhance the consistency of luminance.

Less mature nuclear reactor technologies are characterized by a greater uncertainty due to insufficient detailed design information, operational data, cost information, etc., but the expected performance characteristics of less mature options are usually more attractive in comparison with more mature ones. The greater uncertainty is, the higher economic risks associated with the project realization will be. Within a comparative evaluation of less and more mature nuclear reactor technologies, it is necessary to apply economic risk measures to balance judgments regarding the economic performance of less and more mature options. Assessments of any risk metrics involve calculating different characteristics of probability distributions of associated economic performance indicators and applying the Monte-Carlo method. This paper considers the applicability of statistical risk measures for different economic performance indicators within a trial case study on a comparative evaluation of less and more mature unspecified LWRs. The presented case study demonstrates the main trends associated with the incorporation of economic risk metrics into a comparative evaluation of less and more mature nuclear reactor technologies.

찬송가는 유럽 전통 음악에서 발전하여, 개신교 예배 안에서 오랜 시간 불려 왔다. 그러나 현 재 CCM, CWM과 같은 기독교 음악이 주를 이루어, 젊은 세대들은 찬송가를 단조로운 음악으로 본 다. 그래서 CCM 아티스트와 CWM 팀 등이 기존 찬송가를 동시대에 유행하는 장르를 차용해 리메이 크 하고 있다. 찬송가 및 리메이크 찬송가는 동일한 선율의 곡을 가사만 달리하여 반복하기에 곡 의 기승전결을 위한 악기 앙상블과 보컬 합창의 역할이 중요하다. 본 논문은 주선율에 보다 직접 적인 영향을 주는 보컬 합창만 분석한다. 국내 CWM이 발표한 리메이크 찬송가 중 아카펠라와 합 창, 백그라운드 보컬의 특징을 모두 포함한 온누리워십의 ‘이 몸에 소망 무언가’를 선정하였으 며 곡 형식 반복에 따른 합창 배치와 특징을 분석하였다. 이 연구를 통해 보컬 합창이 반복에 따른 합창 배치와 구조, 비화성음 수식으로 곡에 기승전결을 더한다는 결과를 도출하였다.

The purpose of the study is to analyze the status and trend of less favored condition of fishing village in Korean island regions using the census of agriculture, forestry and fisheries. The less favored condition was measured as the difference in accessibility to major services and in fishery sales and resident infrastructure, applying the difference-in-difference method and propensity score matching method respectively. The result shows that access to major services has improved in island area between 2010 and 2015, implying that related policies such as the island comprehensive development project have been successful to some extent. However, some educational facilities, cultural facilities, and health facilities still have low inaccessibility and fishery sales are also significantly lower than in general area. This suggests that it is necessary to maintain related policies like the direct payment of fisheries.