• Journal of the Society of Disaster Information
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• v.11 no.1
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• pp.73-88
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• 2015

Due to the cases of recent global warming and unusual weather etc., large-scale natural disasters such as typhoons, floods, snow damage occur frequently across the continents such as Southeast Asia and North America, South America etc. and risks of earthquakes and tsunami are also increasing gradually in Korea which has been regarded as a safe zone and disaster types are also being diversified such as typhoons, floods, heat waves, heavy snow and damage scale is also enlarged. In addition, due to geographical characteristics or lack of infrastructure, disasters tended to occur intensively around a specific region or city in the past but disasters occur throughout the country in recent years so preparation for disaster prevention has emerged as an urgent challenge issue. Therefore, considering that the plan of obtaining the effective feedback function of disaster Information is very important in the proactive and software aspects for disaster reduction, this paper analyzed this three aspects of contents, procedural and contextual aspects and proposed the plan. First, in the content aspect, building disaster prevention information communication Infrastructure, building urban and regional disaster prevention system, obtaining concurrency and sharing of information and second, in the procedural aspect, active utilization of ICT(Information and Communication Technology) of the prevention stage, disaster prevention information collection and analysis reinforcement of the preparation stage, improvement of decision-making structure and field command system of the response stage, recovery system related information promotion of the recovery stage were proposed as alternatives and finally, in the contextual aspect, if disaster prevention information is effectively managed through maintenance of disaster prevention information related systems, obtaining domainality by disaster prevention work, improvement of the ability to judge the situation, obtaining comprehensive and feedback function etc, it is considered to significantly contribute to reducing natural disasters.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.41 no.2
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• pp.151-157
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• 2015

In this study, we prepared Eriobotrya japonica leaf extracts by several extraction processes and then evaluated their biological activities for their potential application as a new raw material of functional cosmetic. Their whitening effects were measured by tyrosinase inhibitory activities, and anti-inflammatory effects were determined by inhibitory activities of nitric oxide (NO) production. Among the several extracts obtained from E. japonica leaf, supercritical fluid extract showed tyrosinase inhibitory activities at the concentration of 10%. Inhibitory activity on NO production effect related to anti-inflammatory efficacy was in the order: supercritical fluid extract > ethanol extract > hot water extract. According to the results of MTT assay, cell cytotoxicity was not observed at all concentrations except for a 5% concentration of the 70% ethanol extract. For whitening effects, 30% ethanol and 70% ethanol extract showed mushroom tyrosinase inhibitory activity at the concentration of 5%. These results indicated that E. japonica leaf extracts could have the functional effects when they are added as ingredients in cosmetics.

• 전기의세계
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• v.23 no.4
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• pp.32-35
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• 1974

Thyristor inverter의 유형은 Switching기능에 따라 분류하고 있는데, 크게 나누어 Bridge형 converter와 Cycloconverter로 나누는데, 여기서는 이중 3상 Bridge형 Thyristor Inverter에 대한 전력변환과정을 Vector해석법에 의하여 그 개요를 설명하고, 여기에 현재 가장 효율적 switching방식이라 보고 있는 펼스폭변조환류게이트방식(Pulsewidth modulation commutation gating system)을 적용하였을 때의 효과를 첨가 설명코자 한다.

• Annual Conference on Human and Language Technology
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• 1991.10a
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• pp.189-195
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• 1991

지금까지 생성문법에서 제시한 문법의 구조는 대체적으로 3개부 (components)가 T자 형으로 배치되어 있으며 이러한 구조는 주로 언어능력을 위한 것으로 여겨져 왔다. 본고는 언어수행도 동시에 -- 특히 화자의 환류 (feedback)와 청자의 지각의 면에서 -- 처리할 수 있고 또 각부 사이의 기능을 자연스럽게 연계하여 주는 interface 기능을 위하여, 보다 타당성 있는 새로운 모델로 Pipe 형 (또는 종합형)을 제시하고자 한다.

• Journal of Korean Institute of Fire Investigation
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• v.11 no.1
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• pp.127-137
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• 2007

In our country, a number of fire outbreaking had been increased suddenly for 20 years from beginning of 1980's to 2001. That was related with the focus of economic policy, the rapid increasing of fire fighting objects, the change of life environment, and the increasement of usage of energy. Accordingly, we tried to enforce the function of feedback effect of fire prevention policies with analysing the trends of fire occurring from 1950's to 2006 and the correct statistical analysis.

• Proceedings of the Korea Water Resources Association Conference
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• 2015.05a
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• pp.644-644
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• 2015

최근 국가적 차원에서 자연재해대책법에 근거한 여러 방재심의제도를 운영하고 있다. 그 중 최상위 계획인 풍수해저감종합계획을 통하여 저감대책을 마련하고, 위험지구에 대한 대책과 사업을 시행중에 있다. 그러나 방재업무를 진행하는 중앙부처와 지자체, 방재대행업체자 등에서는 심의보고서간의 자료공유와 접근성이 미약하고 잦은 담당자 변경으로 인한 심의보고서 보관과 관리가 힘든 실정이다. 또한 제도간의 연계와 환류기능이 미흡하여 제도별로 산재되어 있는 부분이 많으므로 통합적으로 관리할 수 있는 운영체계가 필요하다. 따라서 본 연구에서는 풍수해 방재심의제도를 통합적으로 운영하고 관리하기 위한 시스템을 구축하는 것이 최종 목표이며, 이를 위해 우선적으로 풍수해저감종합계획 수립제도를 시범적으로 적용하여 운영 관리할 수 있는 시스템 기반을 마련하였다. 또한, 향후에 있을 방재심의제도별 통합적인 운영을 위해 선제적으로 재해위험지구 정비사업과 구성항목의 데이터 연계성을 분석하였으며, 이를 바탕으로 제도별 연계 시스템을 설계하여 제시하였다.

• Journal of the Korean Society of Food Science and Nutrition
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• v.36 no.1
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• pp.20-26
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• 2007

We analyzed the contents of polyphenol compounds, the antioxidant activity and the physiological activity to investigate the functional effects of extracts from Angelica dahurica by the reflux water extraction (RW), reflux ethanol extraction (RE) and pressure heating water extraction (PW). The content of phenolic compounds of PW was the highest at 156.30 mg/g, and those of RW and RE were 31.69 mg/g and 26.34 mg/g, respectively. The electron donating ability (EDA) were in the range of 30.56% $\sim$ 52.74% and superoxide dismutase (SOD) like activity were 10.96% $\sim$ 23.24% at 1,000 ${\mu}g/mL$. The nitrite scavenging ability of PW at pH 1.2 was 61.47%, higher than those of RW (16.81%) and RE (17.78%). The xanthine oxidase inhibitory were 90.91% and tyrosinase inhibitory rate of RE was the highest (51.71%) at the concentration of 5,000 ${\mu}g/mL$. All extracts were increased with increments of the extract concentrations.

• Journal of the Korean Society of Food Science and Nutrition
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• v.43 no.3
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• pp.389-396
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• 2014

The physiological properties of 70% ethanol extracts from Portulaca oleracea with different extraction methods (reflux extraction, RE; autoclave extraction, AE; low temperature high pressure extraction, LTPE) were investigated. The freeze-dried powder yields of RE, AE, and LTPE were 33.78%, 30.80%, and 11.05%, respectively. The color values of L and b were higher in LTPE, and the chroma values were higher in AE and LTPE compared to RE. The total polyphenolics and proanthocyanidin contents in LTPE were significantly higher than in other extracts. The amount of substances related to flavonoids contents was highest in RE (4.30 mg/g), followed by AE (4.06 mg/g), and LTPE (4.00 mg/g). DPPH radical scavenging ability with a concentration of 500 mg% (w/v) were in the following order; LTPE (88.87%)> RE (83.84%)> AE (80.67%). Further, the reducing power, ABTS radical scavenging ability, and nitrite scavenging activity was observed in the same tendency as seen with the DPPH radical scavenging ability. However, the ferrous ion chelating activity of RE (85.45%) and AE (83.88%) was significantly higher than that of LTPE (75.60%). ${\alpha}$-Glucosidase inhibitory activities of RE and LTPE with a concentration of 100 mg% were significantly higher than AE. Xanthine oxidase, and acetylcholinesterase inhibitory activities of LTPE were higher than the other extracts. These results suggest that the extracts from Portulaca oleracea have the potential to act as functional materials, and components of Portulaca oleracea could be effective in the prevention of Alzheimer's disease, and may be used to develop various functional food products.

• Journal of the Korean Society of Radiology
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• v.85 no.2
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• pp.308-326
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• 2024

A comprehensive evaluation of cardiac function includes information in relation to cardiac output and systemic venous return. The heart is composed of four chambers: two atria and two ventricles, each with its own unique mechanical function. These four cardiac chambers, their valves, and the pulmonary circulation system are inter-related as they preload or afterload on each other. Cardiac dysfunction is a failure of global cardiac function, resulting in typical clinical manifestations. To investigate the underlying cause of cardiac dysfunction, a step-by-step evaluation of cardiac blood flow tracks is necessary. In this context, imaging markers showing details of the cardiac structures have an important role in assessing cardiac function. An image-based evaluation allows for investigation of function in terms of individual cardiac components. Evaluation of cardiac function using cardiac CT has recently been validated. This review aimed to discuss cardiac CT-based imaging markers for comprehensive and detailed cardiac function assessment.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.8
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• pp.2899-2905
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• 2010

To be applicable under electronic health record system in order to ensure semantic interoperability of clinical information, the development principle for clinical information model to reflect objective and function is required. The aim of this study is to develop the development principles for clinical information model and evaluate the Clinical Contents Model. In order to develop the principle, from November 2008 to March 2009, the surveys about 1) definition, 2) function and 3) quality criteria were done, and 4) the components of advanced model were analyzed. The study was processed in 3 levels. Firstly in the development level, key words and key words-paragraph were driven from the references, and the principles were drawn based on the clinical or functional importance and frequency. In the application level, the 3 experts of clinical information model assessed 30 Clinical Contents Models by applying it. In the feedback level, the Clinical Contents Model in which errors were found was modified. As the results, 18 development principles were derived with 3 categories which were structure, process and contents. The Clinical Contents Models were assessed with the principles, and the 17 models were found that they did not follow it. During the feedback process, the necessity of the advanced education of the principle and the establishment of the regular quality improvement strategy to use it is raised. The proposed development principle supports the consistent model-development between clinical information model developers, and could be used as evaluation criteria.