• Annual Conference on Human and Language Technology
• /
• 2010.10a
• /
• pp.81-85
• /
• 2010

최근에 스마트 폰과 같은 모바일 플랫폼의 사용이 증가함에 따라, 모바일 플랫폼에서 사용자의 편의성을 증대시켜주는 시스템 및 프로그램에 대한 요구 사항이 커지고 있다. 본 논문에서는 한국어 E-mail로부터 회의 등의 일정에 관한 정보를 얻어내는 시스템 구조를 제안하고, 그 중 일정의 시간 정보에 대한 구현 및 성능을 제시한다. 본 논문에서는 일정을 서술하기 위해 필요할 것으로 생각되는 12가지의 정보 유형을 정의하였다. 또한, E-mail의 서술 형태를 개조식으로 서술된 부분과 비개조식으로 서술된 부분으로 분류하고, 개조식으로 서술된 부분에 대하여 시간과 관련된 2가지 정보를 추출 하였다. 실험 결과, 일정의 '시작 시간'에 대한 정보 추출의 경우 F-Measure 90.10% 일정의 '종료 시간'에 대한 정보 추출의 경우 F-Measure 84.07%를 달성하였다.

• Journal of the Korean Society of Propulsion Engineers
• /
• v.20 no.2
• /
• pp.46-55
• /
• 2016

The kinetic analysis of a heavily aluminized cyclotrimethylene-trinitramine(RDX) is conducted using differential scanning calorimetry(DSC), and the Friedman isoconversional method is applied to the DSC experimental data. The pre-exponential factor and activation energy are extracted as a function of the product mass fraction. The extracted kinetic scheme does not assume multiple chemical steps to describe the complex response of energetic materials; instead, a set of multiple Arrhenius factors is constructed based on the local progress of the exothermic reaction. The resulting reaction kinetic scheme is applied to two thermal decomposition tests for validating the reactive flow response of a heavily aluminized RDX. The results support applicability of the present model to practical thermal explosion systems.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2013.10a
• /
• pp.253-255
• /
• 2013

수요가 늘어가고 있는 부유식 해양플랜트 구조물의 열악한 해양환경에서의 구조물의 노후화, 사고발생 가능성에 대비해 지속적인 평가가 필요하나, 기존의 구조물에 사용되는 안전성 평가 기법으로는 한계가 있어, 상시적인 구조물의 건전성 평가기법이 필요하다. 그래서 본 연구에서는 상시적인 구조물의 건전성 평가기법을 위해 부유식 구조물의 상시적인 응답 가속도를 추출하여 해당 구조물의 동적특성을 추출 하였다.

• The KIPS Transactions:PartA
• /
• v.15A no.1
• /
• pp.9-16
• /
• 2008

This paper presents a new Boolean extraction technique for logic synthesis. This method extracts two-cube Boolean subexpression pairs from each logic expression. It begins by creating two-cube array, which is extended and compressed with complements of two-cube Boolean subexpressions. Next, the compressed two-cube array is analyzed to extract common subexpressions for several logic expressions. The method is greedy and extracts the best common subexpression. Experimental results show the improvements in the literal counts over well-known logic synthesis tools for some benchmark circuits.

• Food Science and Preservation
• /
• v.13 no.6
• /
• pp.774-782
• /
• 2006

This study investigated the hepatoprotective effects of an ethanol extract of lotus root (LRE) on alcohol-induced liver damage in rat. Sprague-Dawley rae weighing $100{\sim}150g$, were divided into 6 groups: basal diet group (BD), alcohol (35% 10 mL/kg/day) teated stoup (ET), LRE 200 mg/kg/day teated group (BD-LREL). LRE 400 mg/kg/day treated group (BD-LREH), LRE 200 mg/kg/day and alcohol treated group (ET-LREL), and LRE 400 3mg/kg/day and alcohol teated group (ET-LREH). After the administration, rats were sacrificed to get serum and liver to analyze antioxidant enzyme activity, glutathione and lipid peroxide contents. The body weight gain and feed efficiency ratio were decreased by alcohol administration, however, were gradually increased to a little lower level than the basal diet group by the combined administration of alcohol and LRE. The serum alanine aminotransferase (ALT), asparate aminotransferase (AST) and alkaline phosphatase (ALP) activities that were elevated by alcohol were significantly decreased by LRE administration. It was also observed that thiobarbituric acid reactive substances (TBARS) content, xanthine oxidase (XO), superoxide dismutase (SOD), catalase and glutathione peroxidase (GSH-Px) activities in liver that were increased by alcohol, were markedly decreased in the combined alcohol and LRE administered groups as compared with the alcohol administrated group. These effect of LRE within the alcohol groups were in a dose-dependent manner. The glutathione (GSH) content in liver was decreased by alcohol administration, however, increased after administering LRE. Teken together, these result suggest that ethanol extract of lotus root may have a possible protective effect on liver function in hepatotoxicity-induced rat by alcohol administration.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• v.9 no.1
• /
• pp.504-507
• /
• 2005

In this paper, we propose a calibration technique of 3D coordinates using orthogonal stereo vision. First, we acquire front- image and upper- image from stereo cameras with real time and extract each coordinates of a moving object using differential operation and ART2 clustering algorithm. Then, we can generate 3D coordinates of that moving object through combining these two coordinates. Finally, we calibrate 3D coordinates using orthogonal stereo vision since 3D coordinates are not accurate due to perspective. Experimental results show that accurate 3D coordinates of a moving object can be generated by the proposed calibration technique.

• Current Research on Agriculture and Life Sciences
• /
• v.8
• /
• pp.95-106
• /
• 1990

The most important factors among extraction conditions in the extraction process of Barley and Casia tora seed are particle size, extraction temperature, time and initial concentration. In this research project, then, the amounts of extracted materials were measured at various conditions of above factors. They were increased as the particle sizes were decreased and were also increased in the proportional to the value of square of temperature. General mathematical prediction models were developed by an optimization technique for the amounts of extracted materials and extraction rate on the basis of each independent factor. Then, the final prediction model was obtained upon all the factors. As the results, it was also found that the values of overall mass transfer coefficients were increased as the particle sizes were decreased.

• Korean Journal of Food Science and Technology
• /
• v.41 no.5
• /
• pp.547-551
• /
• 2009

Gromwell (LE, Lithospermum erythrorhizon), a perennial herbal plant, has been used for the treatment of various problems associated with atopic dermatitis of the skin, such as water loss, epidermal hyperproliferation, and severe inflammation. Previously, it was shown that oral supplementation with a 70% ethanol extract of gromwell prevented the development of atopic dermatitis in NC/Nga mice. In this study, in order to identify the fraction that mediates gromwell's efficacy, the dietary effects of water and ethyl acetate fractions from the ethanol extract of gromwell were assessed in the development of dermatitis using NC/Nga mice. Dietary supplementation of the hot water fraction significantly reduced scores for epidermal hyperproliferation in parallel with a marked increase of ceramides. Supplementation of the gromwell hot water fraction also decreased scratching behavior, which was accompanied by a decrease in plasma levels of IgE. These results showed that the hot water fraction of the gromwell ethanolic extract prevented the development of atopic dermatitis by increasing ceramides in NC/Nga mice.

• Proceedings of the Korean Society of Propulsion Engineers Conference
• /
• 2017.05a
• /
• pp.547-553
• /
• 2017

Thermal analysis of three energetic materials used in pyroelectric device was performed using Differential Scanning Calorimetry (DSC). The theoretical method for extracting the reaction rate equation of energetic materials using DSC experimental data is proposed and the reaction rate extraction is performed. The results of the DSC were analyzed by the conversion method such as Friedman. Activation energy and frequency factor according to mass fraction were extracted to complete the reaction rate equation. The extracted reaction rate equation has a form that represents the entire chemical reaction process, not the assumption that the chemical reaction process of the high energy material is a main step in several stages. It has considerable advantages in terms of theoretical and accuracy as compared with the chemical reaction rate form extracted through conventional thermal analysis experiments. Using the derived reaction rate equation, we predicted the performance change of three energetic materials operating on actual storage condition over 20 years.

• KSCE Journal of Civil and Environmental Engineering Research
• /
• v.2 no.3
• /
• pp.101-107
• /
• 1982

The progressive sampling method adapts well to the local variabilities of the input terrains, and is therefore one of the most efficient sampling methods in DTM. The efficiency of progressive sampling can be enhanced by increasing the comprehensiveness of grid densification criteria, with superfluous points reduced and/or suppressed. In this investigation, four different criteria were applied to the numerical test, and the suppression criterion was found the most significant among them.