• 대기
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• 제18권2호
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• pp.97-109
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• 2008

The aerosol characteristics in terms of 4 different cases (Asian dust, fog, clear sky and cloud) which had happened at Anmyeon Island in April 2006 were studied using various measurements such as the Micro Pulse Lidar (MPL), sunphotometer, $\beta$-ray $PM_{10}$ Analyzer, anemoscope and anemometer. In addition, synoptic charts, back trajectory analyses and satellite images were also used to help characterize the aerosol events. The aerosol optical properties were featured by the Aerosol Optical Depth (AOD) and ${\AA}ngstr\ddot{o}m$ exponent which were estimated by the sunphotometer. When Anmyeon Island was dominated by the Asian dust, the AOD was sharply increased as seven times as a yearly average of it (0.35). As compared with a yearly average of the ${\AA}ngstr\ddot{o}m$ exponent of 0.97, the ${\AA}ngstr\ddot{o}m$ exponent of a dust day was significantly low (0.099). In addition, $PM_{10}$ mass concentration showed an extremely high record. The maximum concentration reached $1790.5{\mu}gm^{-3}$ on 8 April 2006. The maximum mass concentration was shown with delay when the wind speed of $0ms^{-1}$ was observed. It was also found that a satellite image of the MODIS-RGB had a good agreement with the results of those measurements. It was shown that the MPL was able to describe effectively the vertical distribution of aerosol for all the cases. In particular, the MPL evidently captured the aerosol layer before the cloud observation. The aerosol layer was similarly described by the AOD. On a clear sky day, the AOD had not only a very low value (0.054) but also a feature of homogeneity.

• 한방안이비인후피부과학회지
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• 제30권3호
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• pp.62-75
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• 2017

Objectives : The aim of this study is to evaluate possibility of DITI as prognosis evaluation tool of facial palsy. Methods : We investigate prognosis of facial palsy through EMR(Electronic Medical Record) of inpatient from December 2016 to June 2017. We evaluated the sex, age distribution, length of hospital stay, paralysis site, number of treatment after discharge, change of H-B Grade at entrance and exit, temperature difference of both sides of DITI, and Nerve Conduction Study(NCS) with reference to EMR recorded symptom change. Results : 1. Significant correlations were not found between DITI and House-Brackmann Grade change, NCS(%), the date of admission. 2. There was a negative correlation between NCS(%) and hospitalization period in patients with facial palsy. The higher the NCS, the faster the recovery rate of facial palsy. 3. In patients with facial palsy, the temperature difference between the two sides after the DITI image shows that the affected side tends to be lower than the normal side. Conclusions : In this study, only DITI temperature difference between both sides of face is not significant in determining the prognosis of facial palsy. Further research is needed to conduct DITI at the same time and to improve accuracy through a sufficient assessment of the degree of facial palsy.

• 대기
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• 제26권1호
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• pp.159-183
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• 2016

On 31 July 2014, there was a localized torrential rainfall ($58.5mm\;hr^{-1}$) caused by a strong convective cell with thunder showers over Daegwallyeong. In the surface synoptic chart, a typhoon was positioned in the East China Sea and the subtropical high was expanded to the Korean peninsula. A WRF (Weather Research and Forecasting) numerical simulation with a resolution of 1 km was performed for a detailed analysis. The simulation result showed a similar pattern in a reflectivity distribution particularly over the Gangwon-do region, compared with the radar reflectivity. According to the results of the WRF simulation, the process and mechanism of the localized heavy rainfall over Daegwallyeong are as follows: (1) a convective instability over the middle part of the Korean peninsula was enhanced due to the low level advection of warm and humid air from the North Pacific high. (2) There was easterly flow from the coast to the mountainous regions around Daegwallyeong, which was generated by the differential heating of the insolation among Daegwallyeong and the Yeongdong coastal plain, and nearby coastal waters. (3) In addition, westerly flow from the western part of Daegwallyeong caused a strong convergence in this region, generating a strong upward motion combined by an orographic effect. (4) This brought about a new convective cell over Daegwallyeong. And this cell was more developed by the outflow from another thunderstorm cell to the south, and finally these two cells were merged to develop as a strong convective cell with thunder showers, leading to the record breaking maximum rainfall per hour ($58.5mm\;hr^{-1}$) in July.

• Ocean and Polar Research
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• 제38권1호
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• pp.1-19
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• 2016

Recently, there has been a growing interest in physical-biological ocean-modeling systems by communities in the fields of science and business. In this paper, we present preliminary results from a coupled physical-biological model for the Northwestern Pacific marginal seas. The ocean circulation component is an implementation of the Regional Ocean Modeling System (ROMS), and the lower trophic level ecosystem component is a Nutrient-Phytoplankton-Zooplankton-Detritus (NPZD) model. The ROMS-NPZD coupled system, with a 25 km resolution, is forced by climatological atmospheric data and predicts the physical variables and concentrations of nitrate, phytoplankton, zooplankton, and detritus. Model results are compared with remote-sensed sea surface temperature and chlorophyll, and with climatological sea surface salinity and nitrate. Our model adequately reproduces the observed spatial distribution and seasonal variability of nitrate and chlorophyll concentrations as well as physical variables, showing a high correlation in the East Sea (ES) and Kuroshio/Oyashio Extension (KOE) region but relatively low correlation in the Yellow Sea (YS) and East China Sea (ECS). Although some deficiencies were found in the biological components, such as the over/underestimation of the intensity of phytoplankton blooms in the ES and KOE/the YS and ECS, our system demonstrates the capability of the model to capture and record dominant seasonal variability in physical-biological processes and this holds out the promise of coming to a better understanding of such processes and making better predictions .

• 한국대기환경학회지
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• 제22권3호
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• pp.325-336
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• 2006

The presence of volatile organic compounds (VOC), produced and released from both anthropogenic and natural sources, can accelerate the degradation of air quality in the surrounding area. In this study, we investigated the emission concentrations of VOC based on a total of 115 sample analysis made from 47 companies (representing 17 types of industry) at the Ban Wall industrial complex (Jun. 2004 to Jan. 2005). Through a statistical analysis of these measurement data, we inspected the emission characteristics of VOC in relation with industrial type and processing unit. When these data were compared each other, toluene was found to record the highest value of 423 ppb followed by ethylbenzene (68.3 ppb), m, p-xylene (43.6 ppb), o-xylene (27.2 ppb), styrene (23.9 ppb), and benzene (16.4 pub). In addition, by converting these VOC concentration data into malodor intensity, we attempted to account for their distribution patterns in terms of relative contribution to the malodor formation. The results of odor intensity conversion generally indicated that the odor intensities of individual VOC do not exceed the degree of 1. When our VOC results were compared against other odorous compounds measured concurrently, the results were highly contrasting each other. Despite relative insignificance as odorous compounds, these VOCs are generally found ubiquitously and in abundant quantities in this strong source area.

• 한국기록관리학회지
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• 제20권4호
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• pp.205-227
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• 2020

이 논문은 한국기록관리학회지를 오픈액세스 학술지로 전환하는 과정을 기록한 것이다. 이 과정을 이해하기 위하여 상용DB업체와 학회, 공공DB운영기관 사이에서 벌어진 저작권을 중심으로 한 갈등과 업체와 도서관 사이의 학술DB 가격에 대한 갈등문제를 설명하였다. 또한 최근 국내의 문헌정보학 분야와 인문사회분야 학회들의 오픈액세스 선언의 의미를 설명하였다. 한국기록관리학회지를 오픈액세스로 전환하는 과정에서 부딪힌 출판비 문제, 논문 유통의 문제, 학술지 출판과 관련한 제도의 변경 등 학술지 출판사로서 실무적인 사안들을 처리한 방법과 과정을 기록하고 문제점들도 드러내고자 했다. 또한 이 논문은 기록관리학회지의 오픈액세스 전환을 학술논문의 지식커먼즈를 실현하려는 과정으로 설명하였다.

• 한국비블리아학회지
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• 제29권1호
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• pp.47-72
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• 2018

디지털 시대에서 기록의 품질 확보는 기록자산으로서의 가치를 결정하는 중요한 요소이다. 기록의 품질은 주로 IT 시스템을 이용하는 모든 기록의 생산과 활용 과정에서 기록 요건을 얼마나 일관성 있게 적용할 수 있는가에 달려 있다. 그러므로 조직의 전체 영역에 적용할 수 있는 효과적인 기록관리 거버넌스의 중요성이 더욱 부각되고 있다. 본 논문의 목적은 보다 가치 있는 기록을 산출하고 관리하기 위해 기록관리 거버넌스의 새로운 틀을 제시하고 이를 실행에 옮길 수 있는 방안을 제시하고자 함이다. 이를 위해 기록의 증거적 가치와 정보적 가치를 고려하여 기록의 생산, 유통, 활용, 저장, 보호 등 프로세스 전반에 대한 일관된 정책과 절차를 수립하고 운영하는 거버넌스 체계의 필요성을 제시하고, 2010년대에 제시된 정보 거버넌스 모델인 IGRM과 기록경영시스템 MSR 표준을 통합하여 실제 조직에 적용할 수 있는 기록관리 거버넌스 통합모델을 제안하였다.

• 경영과정보연구
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• 제31권3호
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• pp.249-270
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• 2012

본 연구는 휴먼 브랜드로서 한류연예인에 대한 애착을 형성하는 요인 및 그 애착이 가져오는 결과에 대해 심도 있게 분석함으로써 휴먼브랜드에 대한 연구에 대한 심층적 연구의 필요성을 제기하는 동시에 한류의 효과 및 앞으로 마케팅 전략에 대한 시사점을 제시하는 목적을 가지고 있다. 특히, 사람 대 사람의 관계에서는 충성도보다 애착(attachments)이라는 표현이 적합하다고 판단되어 많은 마케팅 연구자들이 해당 브랜드의 마케팅 성과를 평가하는데 중요한 변수로 활용하고 있다. 본 연구의 결과는 한류연예인의 능력보다는 자아일치성과 신뢰가 더욱 브랜드 애착에 영향을 미치는 중요한 요인임으로 나타났다. 이는 소비자의 감성적인 부분이 연예인 평가에서 더 크게 작용해서 그런 것이 아닌지 유추해 볼 수 있다. 특히, 자아일치성의 개념은 아무래도 이성적 보다는 감성적 측면에서 해당소비자에 대한 평가를 나타내는 측면이라도 볼 수 있기 때문에 대체로 연예인에 대한 평가에서는 감정적 측면의 평가가 더욱 크게 기여할 수 있음을 유추해볼 수 있는 것이다. 둘째, 한류연예인의 확장제품으로 가치에 대한 영향 및 국가 이미지 개선효과를 검증한 결과, 해당 과거 일반 브랜드에서 수행된 연구들과 마찬가지로 광고모델이 좋으면 광고되는 제품에 긍정적 영향을 미치고, 해당브랜드의 차기 후속모델에 대한 관심을 높이며, 새로운 분야로의 브랜드 확장을 용이하게 하였으며 국가이미지에 긍정적인 영향을 미친다는 것을 확인하였다.

• 디지털콘텐츠학회 논문지
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• 제15권1호
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• pp.129-136
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• 2014

Wi-Fi fingerprinting 시스템은 실내에서 사용되는 위치 측위 방법이며 AP(Access Point)에서 발생하는 RSS(Received Signal Strength)에 의존한다. AP로부터의 RSS는 벽, 장애물 그리고 사람에 의한 간섭과 다중경로 페이딩 효과에 의하여 변할 수 있기 때문에 Wi-Fi fingerprinting 시스템은 낮은 측위 정확도를 갖는다. 또한, Wi-Fi 신호는 벽을 통과하기 때문에 기존의 시스템은 사용자가 현재 위치해 있는 층을 구분하기 어렵다. 이러한 단점을 극복하기 위하여 본 논문은 정확한 실내 측위를 위한 LED fingerprinting 시스템을 제안한다. 제안된 시스템은 LED로부터 발생하는 LED-ID와 LED의 광 파워를 사용한다. 본 시스템의 Training 단계에서는 각 장소에 해당하는 Fingerprinting을 데이터베이스에 기록한다. Serving 단계에서는 K-NN(K-Nearest Neighbor) 알고리즘을 적용하여 기존의 데이터와 새롭게 수신되는 사용자의 데이터를 비교한다. 컴퓨터 시뮬레이션을 통해 CDF(Cumulative Distribution Function) 형태로 본 시스템의 성능을 나타내었고, 시뮬레이션 결과로부터 제안된 시스템은 평균 측위 정확도보다 8.6% 높은 정확도를 얻을 수 있다.

• Mycobiology
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• 제45권4호
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• pp.270-285
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• 2017

The crustose lichen genus Pertusaria comprises over ca. 800 species worldwide. In total, 20 Pertusaria species were localized to the Mt. Sorak and Jeju-do in Korea. To date, information regarding the distribution of Pertusaria species in the South Korean peninsula is scarce. In this study, we collected Pertusaria species across South Korea and identified them based on morphological, chemical, and molecular characteristics. Of the 387 samples collected, we identified 24 taxa and 1 variety, of which 17 were previously recorded, and 6 taxa were newly found in South Korea (P. leioplaca, P. leucosora var. violascens, P. texana, P. thiospoda, P. thwaitesii, and P. xanthodes), 2 known species were transferred to Varicellaria (Varicellaria lactea and V. velata), one species was transferred to Variolaria as a new record (Variolaria multipunctoides) and one was a new species (P. jogyeensis J. S. Park & J.-S. Hur, sp. nov.). Characteristics of the newly discovered species, P. jogyeensis, are as follows: smooth to bumpy thallus, scattered to crowded poriform apothecia, blackish ostioles, definitely sunken, thin yellowish green rims around ostioles, 8-spored ascus, and the presence of perlatolic acid and thiophaninic acid (chlorinated xanthone). Phylogenetic studies on P. jogyeensis based on the mitochondrial small subunit sequence revealed proximity to P. flavicans and P. texana, and supported its classification as a new species within the genus Pertusaria. Additionally, we describe the chemical composition and morphology of all listed species in detail and provide an artificial key for identification.