• 정보보호학회논문지
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• 제28권4호
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• pp.889-903
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• 2018

4차 산업혁명의 흐름과 IT자원의 효율적 사용이라는 요구가 맞물려 세계적으로 클라우드 컴퓨팅이 활성화 되고 있으며 국내도 관련 법 제정 및 각종 법안 등에 힘입어 그 사용이 증가하고 있다. 하지만 국내 금융회사는 보유정보의 중요도와 유출 등 사고 발생 시 파급효과로 인해 각종 규제를 받고 있어 상대적으로 활성화 되기 어려운 상황이다. 특히 중요하지 않은 정보를 취급하는 비중요 정보처리 시스템만 클라우드 컴퓨팅 사용이 가능하도록 하고 있는데 이를 구분하는 구체적 기준과 판단을 금융회사가 정하도록 하고 있다. 본 논문에서는 모호한 비중요 정보처리시스템 지정 기준을 구체화 하고 그 지정을 간편하게 할 수 있도록 하여 금융회사 클라우드 컴퓨팅을 보다 활성화 할 수 있는 방안을 제안하고자 한다.

• 식물병연구
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• 제15권3호
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• pp.236-241
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• 2009

본 연구는 정유를 이용하여 환경친화적으로 Botrytis cinerea에 의한 수삼 저장병 방제방법을 개발하기 위하여 수행되었다. 정유의 일종인 methyl eugenol은 200 ppm 농도의 배지상에서 80% 이상의 높은 균사 생육억제 효과를 나타냈다. 상온에서 수삼에 직접 처리 시 무처리구에서 80% 이상의 발병률을 보일 때 methyl eugenol이나 thymol 모두 분무와 침지처리구에서 10~20% 이하로 낮게 발병하여 높은 병 방제효과를 보였다. 저온($4^{\circ}C$)에서의 처리결과도 실온과 비슷하게 포장크기와 상관없이 무처리구에 비해 발병률이 매우 낮게 나타나 역시 실용적인 효과가 뛰어났다. 2 kg 이상을 분석한 대포장 실험에서도 무처리구는 발병지수가 1.65를 보인 반면 methyl eugenol은 0.60으로 개체별 발병면적이 상대적으로 매우 좁게 나타났다. 그러나 두 물질(methyl eugenol+thymol)의 혼합처리에 의한 상승효과는 확인할 수 없었다. Methyl eugenol은 잔류독성이 없고 수삼 저장병 발생 억제효과가 뚜렷해 수삼 저장 시 처리할 수 있는 환경친화적 제제로서 활용 가능하며 특히 신선한 상태로 섭취가 가능해야하는 수삼의 특성으로 볼 때 수삼 저장병 방제제로서의 활용가치는 더욱 클 것으로 판단된다.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2007년도 학술발표회 논문집
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• pp.855-859
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• 2007

It is essential to obtain accurate and highly reliable streamflow data for water resources planning, evaluation and management as well as design of hydraulic structures. A new discharge estimation method, which is named 'non-dimensional velocity distribution and index-velocity method,' was proposed in this research. This method showed very close channel discharges which were calculated with the exiting velocity-area method. When velocity-area method is used to estimate channel discharge, it is required to observe point velocities at every desired point and vertical using a current meter like Price-AA. However 'non-dimensional velocity distribution and index-velocity method' is used, it become optional to observe point velocities at every desired point and vertical. But this method can not be applied for the cases of very complex and strongly asymmetric channel cross-sections because non-dimensional velocity distribution by entropy concept may be quite biased from that of natural rivers.

• 한국가구학회지
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• 제19권1호
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• pp.91-96
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• 2008

This paper investigates the penetration of essential oil into radial and longitudinal directions of Castanea crenata. Present study was performed to know the essential oil penetration depth in radial and longitudinal direction of Castanea crenata. Essential oil penetration depth was found higher in longitudinal direction than in radial direction and it was about 53 times high at 15.0 second of penetration. In early wood, fiber conducted oil more than that of large vessel. In heartwood, fiber had played an important role for the conduction of oil. But in sapwood, small vessel conducted oil deeper than wood fiber, which was also significantly different from large. On the other hand, large vessel in heartwood had statistically lower penetration depth than that of fiber and small vessel. At the beginning of penetration the speed was high and gradually decreased in course of time.

• 재활간호학회지
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• 제6권2호
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• pp.173-182
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• 2003

Purpose: This study was conducted to evaluate the effects of aerobic exercise on health status with essential hypertension. Method: A non-equivalent control group design was used. For the experimental group, aerobic exercise was given by researcher at one health center in Daegu. Test for hypothesis was done by $X^2$-test t-test, paired t-test, and unpaired t-test. Result: There were significant differences in systolic, diastolic, and MAP between two groups. There were significant differences in body weight, BMI, and body composition between two groups. Hypothesis 3 was partially supported that the score of health status and physical function of experimental group were significantly higher than that of control group. Conclusion: Findings indicated that this study would contribute to application of aerobic exercise as nursing intervention for the people with high blood pressure.

• 한국경영과학회지
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• 제19권3호
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• pp.93-109
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• 1994

Even though sojourn time distributions are essential information in analyzing queueing networks, there are few methods to compute them accurately in non-product form queueing networks. In this study, we model the location process of a typical customer as a GMPH semi-Markov chain and develop computationally useful formula for the transition function and the first-passage time distribution in the GMPH semi-Markov chain. We use the formula to develop an effcient method for approximating sojourn time distributions in the non-product form queueing networks under quite general situation. We demonstrate its validity through numerical examples.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2004년도 춘계학술대회 논문집
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• pp.488-493
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• 2004

This study discusses what determinants are important to enter the worldwide railroad market. Survey analysis is used to decide the determinants of export in the international railroad markets. The Study finds that with price factors, non-price factors such as technological innovation and technological transference are important, too. For manufacturing, market experience and know - how, financing and supports in the government level in the areas of strategical alliance and regulation are essential. For non-tariff factors, technical risk and characteristics of markets are considered.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 1996년도 추계학술대회 논문집
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• pp.578-582
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• 1996

Verification of STL is essential in RP. In the study, triangle based non-manifold geometric modeling that can check intersection between triangles was used to vilify STL. The method proposed in this study can be applied at the most general case and very useful, but has a penalty on computing thime of O(n$^2$)

• 대한수학회논문집
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• 제28권4호
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• pp.751-766
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• 2013

We study the existence and long-time behavior of solutions to the following semilinear degenerate parabolic equation on $\mathbb{R}^N$: $$\frac{{\partial}u}{{\partial}t}-div({\sigma}(x){\nabla}u+{\lambda}u+f(u)=g(x)$$, under a new condition concerning a variable non-negative diffusivity ${\sigma}({\cdot})$. Some essential difficulty caused by the lack of compactness of Sobolev embeddings is overcome here by exploiting the tail-estimates method.

• 한국약용작물학회지
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• 제27권6호
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• pp.427-435
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• 2019

Background: A growing interest in health has increased the need for the development of potent antioxidant materials known to play a role in various physiological activities. Currently research and development of non-toxic natural antioxidants with high activity is ongoing. Methods and Results: In this study, we measured 2,2'-azinobis- (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging ability of 10 plant essential oils, selecting samples of Dendranthema indicum, Dendranthema zawadskii, and Citrus sunki essential oils. The samples were analyzed using liquid chromatography (LC) and the radical scavenging activity on LC-based systems with the same conditions. In the LC-mass spectroscopy (MS)/MS analysis of the active compound peak, 2-methoxy-4-vinylphenol with a molecular weight of 150.1 g/mol was identified in C. sunki essential oils. Eugenol or isoeugenol with a molecular weight of 164.1 g/mol as identified in D. indicum and D. zawadskii essential oils as radical scavenging active compounds. Conclusions: In the LC-based measurement system, the active ingredient can be identified by simultaneously conducting profile analysis and the radical scavenging activity of essential oil samples. In addition, LC-MS/MS analysis of the active compound peaks can be performed under the same separation conditions to obtain data that can identify the active compounds in the sample.