자일리톨과 불화나트륨을 함유한 저작성 정제가 교정환자의 구강위생에 미치는 영향에 관한 임상시험

유상훈,안석준,이신재,백승학,김태우,장영일,남동석 대한치과교정학회 2003 대한치과교정학회지 Vol.33 No.2

본 연구는 불화나트륨과 자일리톨 성분으로 구성된 구강 청정용 저작성 정제(덴포정, 하미즐, 부천, 경기)가 교정치료 중인 환자의 구강위생 상태에 미치는 영향을 알아보기 위해 시행되었다. 교정치료 중인 18세 이상의 성인 환자 30명을 대상으로 약제 상요 전, 2주 후, 4주 후에 피험자의 상악과 하악 전치 부위 및 구치 부위에서 각각 치은 지수, 치은 출혈 지수, 치태 지수를 측정하여 다음과 같은 결과를 얻었다. 1. 상하악 전치부와 구치부 모두에서 치태 지수가 약제 사용 전에 비해 사용 2주 후와 4주 후 유의성 있게 감소하였다(p<0.05). 또한, 적용 2주 후와 4주 후의 지수를 비교하였을 때 4주 후에 좀 더 개선된 경향을 보였으나, 통계적 유의성은 나타나지 않았다(p<0.05). 2. 치은 지수, 치은 출혈 지수도 상하악 전치부와 구치부 모두에서 적용 전에 비하여 2주 후와 4주 후 유의성 있게 감소하였다(p<0.05). 적용 2주 후와 4주 후의 지수의 비교 검증에서 통계학적으로 유의할 만한 차이가 보이지 않아 구강위생 상태의 개선이 계속 유지됨을 보였다. 본 연구의 결과는 치태 지수, 치은 지수, 치은 출혈 지수가 실험 정제 적용 후에 감소하여 구강위생 상태가 개선되었음을 보였다. 이러한 결과를 통해 덴포정을 교정치료 중인 환자에서 부가적으로 사용하였을 경우 치주조직의 건강을 증진시키는데 도움을 줄 수 있으리라고 생각된다. The aim of this study was to evaluate the effect a chewable tablet containing sodium fluoride and xylitol (DenPo, Hamizzle, Bucheon, Kyungki) on the oral hygiene state in the orthodontic patients. The subjects consisted of 30 adult orthodontic patients, who have worn the fixed orthodontic appliance at least 6 months. They were instructed to use the tablet forth a day. Gingival index (GI), plaque index (PI), and sulcus bleeding index (SBI) of upper and lower anterior and posterior regions were measured before using the tablet (TO), 2 weeks after using the tablet (T1), and 4 weeks after using the tablet (T2). The data were analyzed with Wilcoxon signed ranks tests. The results were as follows ; 1. PI was decreased significantly in the T1 and T2 stage compared with TO stage in the both anterior and posterior regions (p<0.05). Although PI was decreased in the T2 stage compared with T1, there was not statistical significance(p>0.05). 2. GI and SBI showed similar results compared with PL. In the T1 and T2 stage, there was statistically significant decrease in the GI and SBI (p<0.05). This study showed that the DenPo tablet could be used as an adjunct to improve oral hygiene in the orthodontic patients. The decrease of the indices may suggest that DenPo tablet could be effective in the plaque removal and prevention of gingival inflammation in the orthodontic patients.

양방향 요소제거법을 이용한 신뢰성 기반 최적설계

유진식,박재용,황승민,임민규,오영규,한석영 한국공작기계학회 2008 한국공작기계학회 추계학술대회논문집 Vol.2008 No.-

This research presents a Reliability-Based Topology Optimization (RBTO) using Bi-directional Evolutionary Structural Optimization (BESO). An actual design involves uncertain conditions such as material property, operational load and dimensional variation. Deterministic Topology Optimization (DTO) is obtained without considering of uncertainties related to the uncertainty parameters. However, RBTO involves evaluation of probabilistic constraints, which can be done in two different ways, the reliability index approach (RIA) and the performance measure approach (PMA). The reliability index approach (RIA) and the performance measure approach (PMA) are adopted to evaluate the probabilistic constraints. In order to apply the BESO method to the RBTO, sensitivity number is defined as the change in the reliability index due to the addition or the removal of the ith element. In the BESO, a mesh-independency filter using nodal variables is used to remove the checkerboard patterns. The optimal topologies of RIA and PMA are obtained very similarly. It is shown that RBTO based on BESO can be effectively applied from the presented examples.

강자성체에서 상전이의 수치적 모의실험

유대영,양해정,양회룡,정진,최승평,장차익 조선대학교 기초과학연구소 2001 自然科學硏究 Vol.24 No.-

It is difficult to explain the magnetic phase transition with classical physics in Curie temperature. We studied qualitatively with the well known Ising model in statistical mechanics. We simulated systems of finite size by Monte Carlo methods with Metropolis algorithm. Thus we could estimate the values of quantities such as the magnetization(m) per spin the specific heat(c) per spin the magnetic susceptibility(χ) per spin, and the mean energy per spin compare with the numerical values in infinitive size. The quantities of c, m, χ, e varied rapidly within 2.3∼2.4 temperature at J/k units. Those values show that the critical temperature can be within the range. The hysteresis loop was obtained with this model.

Supra Pubic Catheter를 施行한 腦卒中 患者 1例에 對한 證例報告

유병찬,오병렬,김민상,안정조,임승민,최영,설인찬 대전대학교 한방병원 2002 惠和醫學 Vol.11 No.1

According to the literary study on catheterization of bladder in one case of patient with C.V.A. who was treated by supra pubic catheterization, the results were as follows. 1. If not immediately treat ischuria, emergency disease, very great danger to life can happen by loss of kidney function. So we must treat ischuria instantly by consideration of treatment from the factor. 2. Catheterization of bladder generally acted in emergency room, is emergency treatment only in the lower part of urethral obstruction. 3. Catheterization of bladder was put on record in Son Saimiao's Qianjinyaofang, which is the first book on it. It had been developed by Luo Qianyi, Zhang Jiepin, and Wang Dao. 4. Ancient times, an urethral catheter was made of green onion leaf, pig bladder, goose feather and so on. 5. Nelaton is catheterization of bladder in functional or momentary ischuria. Indwelling catheterization is treatment keeping in urethral canal for a long time. 6. Supra pubic catheterization is a surgical operating catheterization when urethral catheterization is impossible, is very easy and can decrease risk of infection. 7. After catheterization, for decreasing risk of the infection, a complication of catheterization, it is must be taken precedence, ascetic treatment, constantly management and sterilization, anti-biotic medication. 8. At times, increasing patient of emergency disease, as C.V.A etc., the needing of catheterization of bladder is increasing also for preventing infection and bed sore by ischuria and incontinence of urine. Therefore a specialty knowledge and skill about it is necessary.

청소년자원봉사자의 효율적인 관리방안에 대한 연구

유승엽,이영주 남서울대학교 2004 남서울대학교 논문집 Vol.10 No.3

The purpose of this study is to analyze the volunteer activities of the youth. Todays society has an increasing demand and necessity for voluntary service, youth volunteer activities which have become a major social educational issue. These activities were expected to contribute to increase of public benefits and rebuilding of community as well as ego-realization and promotion of social mind of the youth. Thus in order to activate the youth volunteer activities, it is necessary to understanding, education and evaluation of youth volunteer activities.

국제 인적자원관리 전략의 결정요인과 성과 : 한국내 외국인기업을 중심으로

유승훈,윤영득,김종관,김영근 대한경영학회 2003 大韓經營學會誌 Vol.16 No.7

This study explores how the tension between global integration and local responsiveness affects the dimensions and determinants of international human resource strategy. The effects of interorganizational interdependencies, competitive strategies and cultural differences, ownership on the two different dimensions of IHR strategy were studied using a sample of 53 MNCs subsidiaries operating in Korea. The findings for global integration suggest that when a subsidiary is highly dependent on the parent to provide crucial resources. And the findings for local responsiveness suggest that when a subsidiary is highly dependent on the host to provide crucial resources and institution. As for the hypothesized interaction shows a negative, significant relationship between a subsidiary's dependence on host institution and ownership and its localization(b=0.0211, p=0.05). Also between a subsidiary's dependence on host resource and ownership and its localization(b=-0.0113, p=0.1). Accordingly, these insights should prove to be useful to researchers and international human resource managers interested in the formulation and implementation of international human resource strategies.

휴리스틱 체계적 모델을 통한 관광행동의 이해

유진선,이승영 경기대학교 관광종합연구소 2015 여가관광연구 Vol.23 No.-

This paper aims to introduce the heuristic systematic mode and propose some implications that should be actively utilized in understanding tourist behavior. Heuristic systematic model is a theory that drawing conclusions through an intuitive way of thinking , rather than in the absence of a clear clue status on the basis of reasonable thinking. In everyday situations, we have many cases that the decision through an intuitive way of thinking than rational thinking through a decision . Tourist behavior in many cases decisions through intuitive thinking like this. But look came ahead of the leading tourism research through action research to understand the rational way of thinking is understood to consist of continuous action by the irrational mindset is not carried. In other words, in order to understand the irrational behavior by thinking in understanding the tourism action it should be to understand the heuristic systematic model prior , and should use them actively to understand the tourism behavior.

정보원 출처에 따른 광고태도의 매개효과

김재영,유승엽 한국방송광고공사 2001 광고연구 Vol.0 No.53

본 연구는 네 가지의 서로 다른 소비자 만족주장 정보원에 따른 실험자극물(인쇄광고물)을 제작하여 광고에 대한 태도가 소비자 행동에 미치는 영향을 규명하고자 이루어졌다. 즉 고관여 이성제품과 저관여 이성제품에 따라 소비자 만족주장의 정보원이 상이할 경우, 광고에 대한 태도의 중개효과를 밝혀내고, 광고에 대한 태도가 상표에 대한 인지, 상표에 대한 태도 및 구매의도에 어떻게 중개역할을 하여 소비자 태도변화에 작용하는 가를 알아보고자 하였다. 광고에 대한 태도의 중개효과를 알아보기 위해 MacKenzie 등이 제시하였던 Aad의 중개역할모델을 사용하였다. 본 연구의 실험설계는 2×4 요인설계를 사용하였다. 즉 제품은 고관여와 저관여 이성제품(컴퓨터와 치약)의 두 종류를 사용하였으며, 소비자 만족주장 정보원은 네 가지 종류, 예컨대 정보원 없음, 개인보증 자극물, 회사조사결과 자극물 및 과학적 조사결과 자극물이었다. 소비자 만족주장 정보원 출처에 따른 광고태도의 매개효과를 알아보기 위해 공변량 구조분석을 실시하였다. 구조모델의 적합도 평가기준으로는 RMR, GFI, AGFI 및 NFI 지수를 이용하였다. 본 연구의 결과는 Aad가 소비자들의 태도변화에 상당한 영향력을 미칠 것이라고 가정한 선행연구들의 연구결과와 그 맥을 같이한다고 할 수 있다. 즉 소비자만족의 상이한 조건에도 불구하고Aad를 통해 Ab, 그리고 PI로 일치되게 나타났다. 그러나 일부 실험집단에서는 적합모델이 탐색되지 못하였을 뿐만 아니라 적합모델이 탐색되었다 하더라도 상이한 대안적 모델이 동시에 만족되는 결과가 산출되었다. 따라서 왜 이러한 결과가 산출되었는가에 대한후속연구가 필요하다고 하겠다. This study is to find the best model of 4 hypotheses on mediating role of attitude toward the ad(Aad) suggested MacKenzie etc. Ad manipulated as experimental stimulation on 8 appeals of comsumer’s satisfaction for high/low involvement was answered by 246 subjects. Ad message source have a 4 appeal types of consumer’s satisfaction. product involvement and message processing involvement were respectively set up by high and low in this study. LISREL(8.12) for covariance structure analysis was available to test the mediating role of Aad with thinking products would make an experiment. At the result of analyzing 4 hypotheses already suggested by 4 experimental conditions to find the best fit path model, it turned out that the reciprocal mediation hypothesis was the best hypothesis in every condition except just one. In case of path effect between each variable, although there are different conditions, we can find that trough Aad, it accords with Ab and PI. However, in other experimental group, it was proved that the succession Ab → Aad is more strongly influencing than Ad → Ab. It is necessary to illuminate in the following study whether the result of this study has it’s problem in measurement skill or in other external variable.

장기간 트레이닝이 내당능에 미치는 효과 분석

김승영,이배익,유관호 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.4

The present study was carried out to investigate the effects of physical training on glucose tolerance, insulin secretion, insulin sensitivity and insulin binding to erythrocytes in non-insulin dependent diabetic subjects(NIDDM) with fasting hyperglycemia and low insulin response during OGTT. The subjects were separated into two groups. One was diabetics treated with mild caloric restriction and physical training(Training group, n=18), the other was diabetics followed with mild caloric restriction alone(Sedentary group, n=20). Physical training consisted of 3-5 days weekly, 30 minutes sessions, with jogging corresponding to 40-50%VO₂max. Insulin sensitivity was determined by euglycemic insulin clamp technique. Following results were obtained. 1) Oral glucose tolerance was improved after 2 month training and remained unchanged thereafter in the training group. It was also improved in the sedentary group, however, the degree of the improvement in OGTT at 6 month treatment was more pronounced in the training group than in the sedentary group. 2) Amelioration of plasma insulin response during OGTT was observed after 6 months of treatment in the training group only. 3) After 2 months of treatment, glucose metabolic clearance rate(MCR) increased from 4.1㎖/㎏/min to 6.7㎖/㎏/min in the training group, but no change of MCR occurred in the sedentary group. 4) No significant changes in insulin binding to insulin receptors were observed in both the training and the sedentary groups. In conclusion, physical training improves glucose tolerance through an enhancement of insulin sensitivity and further insulin secretion in NIDDM with fasting hyperglycemia. It is useful as an adjunctive to diet in the treatment of NIDDM.

Polaron Hopping in the K_(2)O · B_(2)O_(3) · V_(2)O_(5) Glasses

차유정,강재필,홍성덕,김복수,김영훈,서용문,송승기 명지대학교 자연과학연구소 2005 자연과학논문집 Vol.24 No.-

K_(2)O · B_(2)O_(3) · V_(2)O_(5) 계 유리의 조성비에 따른 밀도, 굴절율, 전이온도, 천이금속이온비율 등과 직류 전기 성질을 100~450K 온도영역에서 연구하였다. 실험결과를 비정질 반도체에 관한 전기전도에 대한 이론 모델을 이용하여 분석하였다. 고온 영역에서는 직류전도도의 온도 의존성을 Mott의 포논-도움껑충뛰기 전도모델로 분석할 수 있었다. 활성화에너지는 0.28~0.33 eV로 시료내 V_(2)O_(5) 의 양이 증가할수록 감소하는 경향을 보인다. 저온 영역에서 직류 전기전도도는 Mott의 가변거리 껑충뛰기(variable-range hopping)전기전도도와 잘 일치하며, N(E_(F))값은 국지화 상태에서와 같다. The dc conductivity of K_(2)O-B_(2)O_(3)-V_(2)O_(5) glasses has been investigated in the temperature range 100~450K and physical parameters such as density, refractive indices, glass transition temperature and fraction of reduced transition-metal ion, were observed for various compositions. The experimental results are analyzed with reference to theoretical models proposed for electrical conduction in amorphous semiconductors. The analysis shows that at high temperature region the temperature dependence of the dc conductivity is consistent with Mott's model of phonon-assisted hopping of small polarons. The values of activation energy are 0.28~0.33 eV and decrease with increasing V_(2)O_(5) content in the sample. The lowtemperature dc conductivity data can be well fitted to Mott's variable-range hopping conductivity and the values of N(E_(F)) are also reasonable for localized states.