• Journal of Korean Medicine for Obesity Research
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• v.11 no.2
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• pp.25-32
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• 2011

Objectives: The purpose of this study was to investigate the acute toxicity with oral administration in ICR mice of Ohyaksungi-san fermented with Lactobacillus sp. Methods: In single oral administered toxic test, four groups were administrated different dosages(0, 1250, 2500, 5000 mg/kg) of fermented Ohyaksungi-san. After single oral administration, we observed number of death, clinical signs, body weight changes, hematological values and autopsy. Results: Compared with the control group, we could not find any toxic signs in the mortalities, clinical signs, body weight changes, necropsy findings and hematological values in all treated groups (1250, 2500 and 5000 mg/kg). Conclusions: These results indicate that the $LD_{50}$ value of fermented Ohyaksungi-san extract might be over 5000 mg/kg and it have no side toxic effect to ICR mice

• Journal of Korean Home Economics Education Association
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• v.9 no.2
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• pp.161-174
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• 1997

The purpose of this study is to investigate the effects of self-concept, reference group, consumer education, and materialism on the propensity for conspicuous consumption of adolescents. The data used in this study were collected through questionnaires on 604 adolescents living in Cheju City. The data were analyzed by using SPSS PC(sup)+ program. The propensity for conspicuous consumption of adolescents differed significantly according to their age and allowance, and sex. The propensity for conspicuous consumption of the middle school students was higher than that of the high school students. The propensity for conspicuous consumption of boys was higher than of girl’s. The propensity for conspicuous consumption of the adolscents was influenced by materialism and the reference group. According to the results of the multiple regression analysis, the most influential factor was materialism and reference group. In clothing materialism was the most influential factor and the reference group was the second influential factor. But In shoes, bag, and school supplies the reference group was the most influential factor and materialism was the second influential factor.

• Journal of the Korea Safety Management & Science
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• v.12 no.3
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• pp.153-162
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• 2010

Continuing and Developing the growth, the company should focus on 'time to market of high quality production' and 'cost down'. Due to the complexity of the production, reliability is being one of the important factor. In this study, in particular, focus on parts reliability test improvement about printer product and proceeded. Need test improvement for time to market that is developed, and reduce expense with test period that is required at Reliability Test time of new parts and should high quality level of product. Finally huge Failure Cost (F-COST) occurs because quality level of product drops if parts that accomplish product does not ensure reliability and this is associated by malfunction in marketplace.

• 한국전기화학회:학술대회논문집
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• 2004.06a
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• pp.287-292
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• 2004

In order to understand the relationship between molecular structure of Metal-Organic Framework(MOF) and capacity of hydrogen absorption, quantum mechanical calculations and grand canonical Monte Carlo simulations have been carried out on a series of MOF-5 having various organic linkers. The calculation results about specific surface area and electron density for various frameworks indicated that the capacity of the hydrogen storage is largely dependent on effective surface area rather than the free volume. Based on the iso-electrostatic potential surface from density functional calculation and the amount of adsorbed hydrogens from grand canonical Monte Carlo calculation, it was also found that the electron localization ground organic linker plays an important role in hydrogen capacity of MOFs.

• Proceedings of the KIEE Conference
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• 2003.07d
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• pp.2615-2617
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• 2003

The Kalman filter is a recursive Linear Estimator for the linear dynamic systems(LDS) affected by two different noises called process noise and measurement noise both of which are uncorrelated white. The Expectation Maximization(EM) algorithm is employed in this paper as a preprocessor to reinforce the effectiveness of Kalman estimator. Particularly, we focus on the relation between Kalman filter and EM algorithm in the LDS. In this paper, we propose a new algorithm to improve the performance on the parameter estimation via EM algorithm, which improves the overall process of Kalman filtering. Since Kalman filter algorithm not only needs the system parameters but also is very sensitive the initial state conditions, the initial conditions decided through EM turns out to be very effective. In experiments, the computer simulation results ate provided to demonstrate the superiority of the proposed algorithm.

• Proceedings of the Korean Society of Veterinary Clinics Conference
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• 2006.11a
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• pp.55-55
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• 2006

• Proceedings of the Korean Institute of Building Construction Conference
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• 2019.11a
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• pp.203-204
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• 2019

Recently, the number of conflicts and complaints related to noise between floors is increasing every year. It is essential to acquisition objective noise data in order to resolve legal disputes over floor noise. However, specialized equipment for noise acquisition is difficult for ordinary apartment dwellers to use. In addition, in order to solve the problem of inter-layer noise, it is most effective to locate and remove the noise. Therefore, this study proposes a floor noise monitoring system for the measurement of floor noise and estimation of the noise source that can be measured without a professional device.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• fall
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• pp.252-255
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• 2021

코로나19 바이러스로 인해 이전에는 부가적으로 이루어졌던 온라인 공연이 오프라인 공연의 대안으로 떠오르며 비대면을 일컫는 '언택트(Untact)'에 온라인을 통한 외부와의 '연결(On)'을 더한 개념인 온택트 공연의 사례가 늘어나고 있다. 그러나 오프라인 콘서트에 직접 참여하여 느낄 수 있는 공연자와 관객 간의 상호작용을 전달하기는 어렵다. 이에 본 논문에서는 'ZOOM'이라는 화상회의 플랫폼을 활용하여 현장감을 더하고, 기존의 중계시스템에서 사용하던 SDI 방식보다 더 간단하고 효율적인 NDI(Network Device Interface) 기술을 적용한 온택트 중계시스템을 제안한다.

• Annual Conference of KIPS
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• 2020.11a
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• pp.632-633
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• 2020

화재현장을 탐사하고 실시간으로 스트리밍하며 알려주고 불꽃을 인식하여 스프레이 소화기로 화재를 진압하는 로봇

• Annual Conference of KIPS
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• 2020.05a
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• pp.191-194
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• 2020

본 연구에서는 안전하면서도 쉽게 사용할 수 있는 블록체인 기반의 중고 책 거래 플랫폼을 개발하였다. 이 플랫폼은 블록체인의 특성을 이용해 거래 제품 및 거래내역을 공유원장에 기록하여 거래내역을 투명하게 공개하며 누구나 열람 가능하다. 이는 데이터의 무결성과 투명성을 보장하며 신뢰성 있는 거래 환경을 제공한다. 이를 사용할 경우, 기존 중고거래 시스템에서 발생 가능한 데이터의 위조, 변조의 문제점과 불확실한 신뢰 문제가 해결되어 중고거래 사기사건을 예방할 수 있다.