• 정보관리학회지
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• 제37권4호
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• pp.131-150
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• 2020

본 연구는 최근 학술지 출판에 있어 전통적인 동료 심사 방식의 문제점을 개선하기 위해 새롭게 시도되고 있는 오픈 피어 리뷰(OPR)에 대한 연구자의 인식을 파악하고자 대표적인 메가 오픈 액세스(OA) 학술지의 국내 저자를 대상으로 설문조사를 실시하고 그 결과를 분석하였다. 설문조사 대상은 국제적인 OA 학술지이며 메가학술지인 PLOS 학술지에 논문을 출판한 국내 교신 저자로 선정하였고, 설문조사는 온라인 설문으로 진행하였으며, 총 238명이 응답하였고 202개의 유효 설문을 대상으로 분석을 수행하였다. 수집된 설문 데이터에 대해 빈도 분석, 집단 간 평균 비교를 수행하여 통계분석을 하였다. 연구자의 연령, 연구경력, OPR 경험 유무 등에 따라 OPR에 대한 인식에 차이가 나타나는지 분석한 결과 44세 이하 연구자, 9년 이하의 연구경력을 갖는 연구자, OPR 참여 경험이 있는 연구자의 경우 OPR 인식에서 몇 가지 차이를 보였다. 44세 이하 연구자의 경우 현재 동료 심사 방식의 변화를 바라지만 OPR에 대해서는 적극적으로 수용하지 않고 있는 것으로 나타났다. 연구자가 OPR에 동의하지 않는 이유를 분석한 결과 객관성 결여, 심사자 부담 증가, 감정 및 관계 문제를 제기하였고, 잊혀질 권리도 필요하다고 응답하였다.

• 한국펄프종이공학회:학술대회논문집
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• 한국펄프종이공학회 2004년도 춘계학술발표논문집
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• pp.86-96
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• 2004

Identification of dynamics of short circulation during grade change operations in paper mills is very important for the effective plant operation. In the present study a prediction method of One Pass Retention(OPR) is proposed based on the neural network. The present method is used to analyze the dynamics of short circulation during grade change. Properties of the product paper largely depend upon the change in the OPR. In the present study the OPR is predicted from the training of the network by using grade change operation data. The results of the prediction are applied to the modeling equation to give flow rates and consistencies of short circulation.

• The Plant Pathology Journal
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• 제36권2호
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• pp.148-156
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• 2020

Pseudomonas syringae pv. tabaci 6605 has two multidrug resistance (MDR) efflux pump transporters, MexAB-OprM and MexEF-OprN. To understand the role of these MDR efflux pumps in virulence, we generated deletion mutants, ΔmexB, ΔmexF, and ΔmexBΔmexF, and investigated their sensitivity to plant-derived antimicrobial compounds, antibiotics, and virulence. Growth inhibition assays with KB soft agar plate showed that growth of the wild-type (WT) was inhibited by 5 μl of 1 M catechol and 1 M coumarin but not by other plant-derived potential antimicrobial compounds tested including phytoalexins. The sensitivity to these compounds tended to increase in ΔmexB and ΔmexBΔmexF mutants. The ΔmexBΔmexF mutant was also sensitive to 2 M acetovanillone. The mexAB-oprM was constitutively expressed, and activated in the ΔmexF and ΔmexBΔmexF mutant strains. The swarming and swimming motilities were impaired in ΔmexF and ΔmexBΔmexF mutants. The flood inoculation test indicated that bacterial populations in all mutant strains were significantly lower than that of WT, although all mutants and WT caused similar disease symptoms. These results indicate that MexAB-OprM extrudes plant-derived catechol, acetovanillone, or coumarin, and contributes to bacterial virulence. Furthermore, MexAB-OprM and MexEF-OprN complemented each other's functions to some extent.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2022년도 춘계학술대회
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• pp.18-21
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• 2022

최근 정보기술(IT)의 급속한 발전, 코로나19(COVID-19)로 인한 글로벌 팬데믹 현상 등으로 오픈 액세스(OA), 오픈 사이언스(OS), 개방형 동료평가(Open Peer Review, OPR)와 같은 새로운 학술출판 관행이 과학기술분야 학술연구 현장에도 영향을 미치고 있다. OPR 시스템의 도입과 같은 새로운 학술연구출판 관행과 제도는 가치, 동기, 수단, 라이센스, 인센티브 등과 서로 밀접하게 연결되어 있다. OPR의 개념과 실체가 무엇인지는 기존 연구들을 통하여 최근 어느 정도 정립이 됐다. 하지만 OPR을 통해 연구자 개인이나 학회, 출판사 등에 새로운 기회, 도전 과제 및 미래 전망에 대하여 어떠한 영향을 미치는 가에 대한 연구는 중요하지만 제한적이다. 특히 학술연구출판 관행에 대한 다양한 연구가 국내외에서 진행되었지만 국내에서 학술지를 발간하는 학회차원에서 학술연구출판 관행, 특히 OPR에 대한 구체적인 조사분석은 거의 진행되지 않았다. 그렇기에 OPR에 대한 학술출판 생태계의 다양한 참여 주체들의 관점을 자세히 탐구할 필요성이 있다. 이에 본 연구는 과학기술분야 학술지의 학술연구출판 관행과 관련하여 학회 차원에서 새로운 학출연구 출판관행, 특히 OPR에 어떠한 인식을 가지고 있는가에 대한 연구를 진행하고자 한다. 본 연구는 한국과학기술정보연구원(KISTI) 학술연구논문투고심사시스템(ACOMS)를 활용하는 학회를 중심으로 설문조사를 통하여 수집된 OPR 관련 학술연구출판 관행과 제도 변화에 대한 인식을 분석했다.

• 한국압력기기공학회 논문집
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• 제15권2호
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• pp.40-49
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• 2019

In this paper, failure probabilities of the OPR1000 reactor vessel under pressurized thermal shock (PTS) were estimated using the probabilistic fracture mechanics code, R-PIE. Input variables of initial crack distribution, crack size, copper contents, and upper shelf toughness were selected for the sensitivity analyses. A wide range of the input data were considered. Through-wall cracking frequencies determined by the product of the vessel failure probability and the corresponding occurrence frequency of the transient were also compared to the acceptance criterion. The results showed that transient history had the most significant impact on the vessel failure probability. Moreover, conservative assumptions resulted in extremely high through-wall cracking frequencies.

• Nuclear Engineering and Technology
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• 제55권3호
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• pp.1167-1180
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• 2023

Due to the tightened regulatory environment since the Fukushima accident, the capacity factor of Korean nuclear power plants has been declining since 2011. To overcome this circumstance, a shift from 18-month to 24-month cycle operation is being considered in Korea. Therefore, in this study, loading patterns(LPs) for 24-month cycle operation of the Korean standard nuclear power plant(OPR-1000) are suggested and economic evaluations are performed. A single-zone LP with 89 fresh fuels was evaluated to be optimal for 24-month operation of OPR-1000 in terms of economic gain. The 24-month operation of OPR-1000 with this LP gives a profit of 7.073 million dollars per year compared to 18-month operation.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2008년도 추계학술대회A
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• pp.287-292
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• 2008

The applicability of stainless steel type 316N to the PZR surge-lines of OPR1000 and APR1400 is investigated. So far, strainless steel type 347 has been used for the OPR1000 surge-lines. The degree of improvement in the leak-before-break(LBB) and component design margin is evaluated when stainless steel type 347 is substituted by type 316N. For the study, the tensile and J-R tests on type 316N and type 347 stainless steels were performed at 316 and the microstructure of both types was examined. Stainless steel type 316N shows the higher values on the stress-strain curves, J-R curves and stress intensity, Sm, compared to those of type 347. Therefore, stainless steel type 316N ensures the higher LBB and component design margins. As a result, this study shows that stainless steel type 316N could substitute type 347 for the surge-lines of OPR1000 and APR1400.

• 천문학회보
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• 제38권1호
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• pp.48.2-48.2
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• 2013

We present the near-infrared spectra (2.5-5.0 um) of shocked $H_2$ gas, observed with the Infrared Camera onboard the satellite AKARI. Two supernova remnants, IC 443 and HB 21, were observed. IC 443 shows a hint of non-equilibrium ortho-to-para ratio (OPR): 2.4 (-0.2, +0.3). HB 21 also shows an indication of a potential non-equilibrium OPR: 1.8-2.0. These non-equilibrium OPRs are first reported for shocked $H_2$ gas at E(v,J) > 7000 K, as far as we are aware. We concluded that the non-equilibrium OPR probably originates from dissociative J-shocks, considering several factors such as the shock combination requirement, the line ratios, and the possibility that $H_2$ gas can form on grains with a non-equilibrium OPR. The difference in the collision energy of H atoms on grain surfaces would give rise to the observed difference between the OPRs of IC 443 and HB 21, if dissociative J-shocks are responsible for the $H_2$ emission. Our study suggests that shocked-then-cooled $H_2$ gas may play as a heat reservoir with the non-equilibrium OPR.

• Bulletin of the Korean Chemical Society
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• 제20권12호
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• pp.1394-1398
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• 1999

The structures of modified Ti$(OPr^i)_4$ with chelating ligands (L) such as ethylacetoacetate (Etac), acetylacetone (Acac) and methylacetoacetate (Mtac) were identified by using IR, ¹H NMR and $^13C$ NMR spectroscopies, and the octahedral structure was confirmed after modification. The pre-edge peaks of XANES spectra of modified metal alkoxides also denoted the mixture of five-fold and six-fold structures. The EXAFS fitting results showed the local structure around Ti atom after alkoxide modification. The hydrolysis-condensation rates of modified Ti alkoxide with organic additives were investigated by ¹H NMR spectroscopy. The Ti$(OPr^i)_4$ modified by Acac was less reactive toward hydrolysis-condensation reaction than those modified by the other alkoxides, which can be attributed to the stable ligand structure between Ti$(OPr^i)_4$ and Acac. The small particle size of modified Ti$(OPr^i)_4$ sol was obtained when Acac was employed.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2013년도 추계학술대회 논문집
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• pp.402-403
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• 2013