• 대한안전경영과학회지
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• 제18권4호
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• pp.19-30
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• 2016

This paper addresses the problem of how to effectively use virtual reality(VR) for improving the quality of safety training systems. As the working environment and the working system in the industry are more and more complex and large-scaled, the concern with system safety is accordingly growing. Safety training systems are regarded as an effective way for increasing workers' interest in system safety and enhancing their ability of preventing and handling accidents/incidents. Recently, it has been reported that VR would be effectively used for improving the quality of safety training systems, with its technically specialized features. However, little attention has been given to the problem of how to effectively use VR for safety training systems. In order to make the best use of new technology such as VR, it is important to examine its advantages and disadvantages and the contexts to which its use can be beneficial. This paper firstly reviews the current status of safety training systems and the use of VR for safety training systems in the inside and outside of the country. Next, we summarize the interview with safety managers in four manufacturing companies, which was conducted to understand the requirements of stake-holders of the issue. Based on the review and the interview, we suggested the ways of using VR in safety training systems in an effective manner. They are described from the four perspectives: development and maintenance cost, lack of specialized workers, design of accident scenarios used with VR, and empirical demonstration of the effectiveness of VR in safety training.

• Clinical and Experimental Pediatrics
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• 제50권11호
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• pp.1134-1138
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• 2007

최근 결핵 유병률이 청소년기에 다시 증가하고 있으며, 이 시기의 결핵은 성인이나 어린 소아와는 다른 임상적 특징을 가지고 있다. 결핵 감염에서 질병으로 쉽게 발전되거나, 폐외 결핵의 발생 빈도가 높고, 폐결핵에서 공동이 잘 생기며, 항결핵제에 내성이 있는 경우가 많아 치료실패율이 높기 때문에 조기 진단과 치료를 위해 의료진의 보다 적극적인 관심과 노력이 필요하다. 저자들은 최근 청소년에서 조직검사로 확진된 폐 및 폐외 결핵 3례를 경험하였기에 보고하는 바이다.

• 펄프종이기술
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• 제36권4호
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• pp.16-24
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• 2004

The reduction of paper machine water usage is precursor to the water system closure of any mills. This reduction in water consumption reduces the loss of solids; especially fine particulates and their surface adsorbed chemical additives, from mills, which causes an inevitable increase of fine materials in papermaking systems. Also the reduction of paper machine water usage causes substantial increase of organic and inorganic substances in process water. The deterioration of the papermaking process water quality accompanying the reduction of papermaking system closure can be a prime source of the aggravation of paper quality and process efficiency. It is of great importance for paper mills to investigate the influence of the level of papermaking system closure on the paper properties and process runnabililty before implementing process closure. To predict the changes in paper properties at different levels of system closure, highly cotaminated white water was prepared using reverse osmosis technology and used to prepare handsheets from fine paper and newsprint stocks. Results showed that the quality of process water affects the strength. Preparation of highly contaminated process water and handsheet forming with headbox stocks provided important criteria to determine the relationship between the qualities of process water and paper products.

• Applied Biological Chemistry
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• 제50권3호
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• pp.217-223
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• 2007

화장품에 폴리페놀을 다량 첨가 시 색소가 문제시 될 수 있어 이를 제거하기 위하여 폴리페놀을 첨가한 토너와 에센스에 방사선을 5, 10, 20 kGy로 조사하고, 조사량에 따른 암세포증식 억제능을 검토하였다. 암세포 증식 억제능 측정 결과 모든 세포주(B16F10, G361, A549, HT-29)에 대하여 폴리페놀이 첨가된 토너와 에센스는 500 ppm에서 80% 이상의 증식 억제능을 나타내었으며, 특히 human melanoma(G361)에서는 100 ppm에서 80% 이상의 뛰어난 암세포 증식 억제 효과를 나타내었으며, 방사선 조사량이 증가해도 폴리페놀의 활성이 유지되었다. 또한, 방사선 조사량이 증가 할수록 색이 점차적으로 옅어짐을 확인할 수 있었다. 이와 같은 결과로 미루어 보아 녹차 폴리페놀을 토너와 에센스에 첨가했을 때 암세포증식 억제능이 우수하였으며, 화장품에 첨가 시 나타나는 색소문제는 방사선 조사를 이용하여 개선이 될 것으로 사료된다.

• The Plant Pathology Journal
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• 제32권5호
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• pp.407-413
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• 2016

Fusarium graminearum species complex (FGSC) causes Fusarium head blight in small grain cereals. To date, four species (F. graminearum, F. asiaticum, F. boothii, and F. meridionale ) belonging to FGSC frequently occur in Korean cereals. In addition, we first reported the occurrence of additional species (F. vorosii ) within FGSC, which was isolated from barley, corn, and rice in Korea. Phylogenetic analysis of the Fusarium isolates of this group using combined multigene sequences confirmed species identification. Moreover, the macroconidia produced by these isolates were morphologically similar to those of the F. vorosii holotype. Chemical analysis indicated that the F. vorosii isolates produced various trichothecenes such as nivalenol and deoxynivalenol with their acetyl derivatives along with zearalenone. Pathogenicity tests demonstrated that all of the F. vorosii isolates examined were pathogenic on barley, corn, and rice with variation in aggressiveness. This study is the first report of F. vorosii in Korean cereals, their pathogenicity towards barley and corn, and their ability to produce trichothecenes and zearalenone.

• Molecules and Cells
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• 제38권6호
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• pp.573-579
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• 2015

Apolipoprotein A-I and A-IV are protein constituents of high-density lipoproteins although their functional difference in lipoprotein metabolism is still unclear. To compare anti-atherogenic properties between apoA-I and apoA-4, we characterized both proteins in lipid-free and lipidbound state. In lipid-free state, apoA4 showed two distinct bands, around 78 and $67{\AA}$ on native gel electrophoresis, while apoA-I showed scattered band pattern less than $71{\AA}$. In reconstituted HDL (rHDL) state, apoA-4 showed three major bands around $101{\AA}$ and $113{\AA}$, while apoA-I-rHDL showed almost single band around $98{\AA}$ size. Lipid-free apoA-I showed 2.9-fold higher phospholipid binding ability than apoA-4. In lipid-free state, $BS_3$-crosslinking revealed that apoA-4 showed less multimerization tendency upto dimer, while apoA-I showed pentamerization. In rHDL state (95:1), apoA-4 was existed as dimer as like as apoA-I. With higher phospholipid content (255:1), five apoA-I and three apoA-4 were required to the bigger rHDL formation. Regardless of particle size, apoA-I-rHDL showed superior LCAT activation ability than apoA-4-rHDL. Uptake of acetylated LDL was inhibited by apoA-I in both lipid-free and lipid-bound state, while apoA-4 inhibited it only lipid-free state. ApoA-4 showed less anti-atherogenic activity with more sensitivity to glycation. In conclusion, apoA-4 showed inferior physiological functions in lipid-bound state, compared with those of apoA-I, to induce more pro-atherosclerotic properties.

• 한국디자인학회:학술대회논문집
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• 한국디자인학회 2004년도 추계 학술발표대회 논문집
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• pp.234-235
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• 2004

현재 자동차의 변화를 이끄는 흐름에서 가장 핵심이 되고 있는 유형 Sport Utility Vehicle은 전천후 기동성 측면과 Sports성을 중심적인 특성으로 다루고 있다. 그러나 SUV로서 off road 중심의 공간 활용 보다는 실내 공간 중심의 활용이 더욱 중요한 특성으로 자리잡고 있다. 이러한 경향은 주 5일 근무 정착에 따른 여가 시간의 증가와 아울러 보다 다양한 직업과 생활 패턴 등에 따라 더욱 두드러질 것으로 보인다. 이러한 근 미래 변화에 대응하는 방법으로 기존의 SUV type에서 탈피하여 sports성을 반영하는 동시에 보다 utility적 활용 중심의 특성을 가지는 XUV (eXtreme Utility Vehicle)라는 새로운 유형을 2010년 시점의 근 미래 테크놀러지와 조형성의 동향 예측, 사용자 요구점 분석 포지셔닝 등을 통해 제안한다.

• 한국우주과학회:학술대회논문집(한국우주과학회보)
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• 한국우주과학회 2008년도 한국우주과학회보 제17권2호
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• pp.35.2-35.2
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• 2008

The Albedo MONitor and RAdiometer (AMON-RA) instrument system is designed to measure Earth global albedo anomaly over the wavelength range of 0.3um to 4um. The instrument consists of two interconnecting optical subsystems i.e. a visible channel and an energy channel. The energy channel instrument consists of a modified Winston cone, a couple of relay mirrors and a pyro-electric detector. First, we report the integration and alignment process, leading to the prototype bolometer instrument. We then discuss the radiometric performance characterization including laboratory measurement results and the future plan for further incorporation of the bolometer instrument into the prototype AMON-RA instrument.

• 마케팅과학연구
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• 제15권3호
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• pp.49-65
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• 2005

현대인들은 의식적 혹은 무의식적으로 많은 광고에 노출되고 있다. 이에 기업에서는 매력적인 모델을 광고에 사용함으로써 자사의 광고에 소비자들의 주목도를 높이려는 것이 일반적인 경향이다. 의류의 경우, 소비자는 주로 잡지, 신문, 카탈로그, TV 광고 등의 마케터 주도적 정보원을 통해 정보를 수집하는 것으로 나타나, 마케터가 제시하는 광고가 의류 소비자의 구매행동에 영향을 미친다는 것을 알 수 있다. 따라서 본 연구에서는 의류광고에 사용되는 모델이 소비자에 의해 의류광고에 적합하다고 판단되어지는 경로를 이론적으로 도출하고 이를 실증적으로 검증하였다. 그 결과, 모델의 매력도 차원에는 '관능성'과 '귀염성', 두 차원이 존재하며, 이 차원은 각각 다른 경로로 의류광고 적합도를 향상시키는 것으로 나타났다. 관능성은 '모델답다', '전형적인 모델이다'로 여겨지는 '모델 전형성'을 통해 의류광고 적합도를 향상시키며, 귀염성은 모델 전형성을 거치지 않고 의류광고 적합도에 직접적으로 영향을 미치는 것으로 나타났다. 이러한 결과는 기업이 의류모델을 선정함에 있어 유의한 시사점을 제공한다.

• 한국임상약학회지
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• 제30권2호
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• pp.120-126
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• 2020

Objective: The rising number of carbapenemase-resistant Enterobacteriaceae (CRE) cases has become a concern worldwidely. This study investigated patient characteristics with CRE and analyzed the risk factors associated with its acquisition. Methods: A retrospective review of the electronic medical records of the Kangbuk Samsung Medical Center from May 2016 to April 2019 was performed. The inclusion criterion was hospitalized patients aged ≥18 years with confirmed CRE acquisition. Patients were divided by CRE acquired and non-required patients. CRE acquired patients were those with CRE confirmed by their active surveillance cultures, while non-acquired patients were those with carbapenemase-sensitive Enterobacteriaceae (CSE). If CRE was isolated more than once during hospitalization, only the first isolation was used for data analysis. Patient characteristics, antibiotic used, and the duration of use were compared between two groups using univariate analysis, and the risk factors associated with CRE were analyzed using multiple logistic regression analysis. Results: Among the 73 CRE acquired patients, 44 (60.3%) were positive for carbapenemase-producing Enterobacteriaceae (CPE). Infection from Klebsiella pneumonia (42 cases, 57.5%), Escherichia coli (17 cases, 23.3%), and Enterobacter cloacae (5 cases, 6.8%). The risk of CRE acquisition was significantly increased by 4.99 times [confidence interval (CI), 1.40-17.78; p=0.013] with mechanical ventilation, 3.86 times (CI, 1.59-9.36; p=0.003) with penicillin administration, and 21.19 times (CI, 6.53-68.70; p<0.001) with carbapenem administration. Conclusions: Proper antibiotic use including the selection, frequency, and duration, and patients on mechanical ventilators need close monitoring.