• 대한간호학회지
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• 제51권3호
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• pp.265-279
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• 2021

Purpose: This study examined the impact of a drinking reduction program on drinking motivation, drinking refusal self-efficacy, and problematic drinking behaviors in college students with problematic drinking habits. Methods: This study incorporated a non-equivalent control group prepost-test design. Study participants included 58 college students who scored 12 or more in the AUDIT-K test (Alcohol Use Disorders Identification Test-Korean version) (experimental group: 30; control group: 28). The intervention consisted of eight sessions and was conducted once a week. It was designed to promote autonomy, competence, and relatedness-the three elements of basic psychological needs in self-determination theory. The participants were assessed before the intervention, immediately after, and four weeks post intervention. Data were collected from October 12 to December 31, 2017. The analysis employed the chi-square test, Fisher's exact test, independent t-test, and repeated measures ANOVA using SPSS/WIN 22.0. Results: The mean age of participants was 21.8 years. There were 30 men (51.7%) and 28 women (48.3%). The differences in drinking motivation, drinking refusal self-efficacy, and problematic drinking behaviors were statistically significant for the group by time interaction (F = 42.56, p < .001; F = 54.96, p < .001; F = 39.90, p < .001, respectively). Conclusion: The findings indicate that the intervention effectively decreases drinking motivation, increases drinking refusal self-efficacy, and decreases problematic drinking behaviors. It can be an efficient strategy for college students with problematic drinking habits to enhance their self-determination ability.

• 대한한의학방제학회지
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• 제29권2호
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• pp.93-103
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• 2021

Objectives : This study was conducted to evaluate the Intraocular pressure (IOP) and retina neuroprotective effect of Acer palmatum thumb. extract in glaucoma of DBA2/J mice vivo model. Methods : The amount of change in intraocular pressure(IOP) was measured every two weeks for 30 weeks in the DBA2/J glaucoma animal model. The increased IOP were regrouping into drug treatment groups. EW and EE (1, 2 mg/㎖)extract was eye drop administered twice per day for 8 weeks. After administration of the extract, IOP was measured every 1 week at a fixed time for 8 weeks, and protein expression levels and serological changes related to retinal function were investigated. Results : The DBA2/J mice were IOP increased as time dependent, resulting in damage to the retinal function protein related in glaucoma animal model. However, administration of extracts from Leaves of Acer palmatum thumb. prevented an increase IOP, increased for Brn3α, PKCα, and OPN1SW. Additionally, the experssion of Aterocyte maker, GFAP was decreased in DBA2/J mice. Conclusions : These results demonstrate that both IOP and age can be considered in studies using DBA2/J mice and suggest that the extracts from Leaves of Acer palmatum thumb. regulating of IOP and expression of proteins related to retinal function.

• 한국정보통신학회논문지
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• 제24권3호
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• pp.405-411
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• 2020

최근 수중 자원개발, 재난 감시 및 국방에 관련하여 수중 통신에 대한 연구가 활발히 진행 중이다. 무선통신 시스템 설계에서 경로손실은 주어진 통신 링크에 대한 수신 전력 레벨을 계산하여 통신 신뢰성을 보장하는데 필요한 링크 예산을 도출하기 위한 중요한 정보이다. 수중음향채널은 각 해역에 따라 수온, 수심, 파고, 조류, 탁도 등에 의해 서로 다른 특성을 보이며, 각 해역별 수중음향채널의 경로손실은 서로 다른 특성을 갖는다. 따라서 수중음향 통신 시스템개발을 목적으로 하는 전 세계의 여러 연구기관에서는 다양한 해역에서 수중음향채널에 대한 연구가 활발히 진행되고 있다. 하지만 국내는 아직까지 수중음향채널의 경로손실에 대한 연구결과가 매우 부족하다. 따라서 본 연구에서는 남해 거제도 천해역의 실해역 측정을 통해 경로손실을 추정하였으며, 기존 연구에서 제안한 경로손실 수식에 남해의 환경정보를 적용하여 도출한 결과를 비교하여 그 차이를 확인하였다.

• 한국항공우주학회지
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• 제50권1호
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• pp.21-30
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• 2022

스크램제트 엔진은 운용 중에 비시동이 발생하면 재시동이 거의 불가능하다. 그러므로 이에 대한 예측이 매우 중요하다. 본 연구에서는 격리부 출구에서의 배압을 조절함에 따라 나타나는 비시동 과정을 수치적으로 모사하였다. 비시동 데이터 검출은 벽면에서의 압력 데이터에 서포트 벡터 머신(SVM) 기법을 적용하여 흡입구의 시동과 비시동 데이터로 분류하였고, 시동과 비시동의 분류에 가장 적합한 압력 센서의 위치를 도출하였다. 또한 엔진의 시동과 비시동 경계를 분석하여 엔진이 비시동 되기까지의 여유(마진)을 정량화하였다.

• 복식문화연구
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• 제29권6호
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• pp.828-848
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• 2021

The purpose of this study is to analyze how modern fashion brands practice cultural sustainability by investigating the ways they use and reinterpret traditional culture and clothing. The transmission and reinterpretation of traditional cultural elements connect the past, present, and future. These forces also lead to the development of new creativity in the fashion industry. Three brands have been selected for case studies: Danha (Korea), Mittan (Japan), and Jan Jan Van Essche (Belgium). These brands possess in-depth understanding of traditional cultural elements, including clothing, dyeing techniques, and patterns unique to various regions and minority groups. The brands all make use of traditional cultural identities whose clothing contains the historical and sentimental values of various regions and ethnic groups. The use and mixing of various cultures can be seen as the respectful preservation of global culture. Also, in contemporary fashion, the use of traditional culture plays an important role in the presentation and development of creative designs. The use of traditional handicraft techniques and the use of traditional clothing in the past convey cultural diversity to future generations; they will have a lasting influence on future fashion trends. The results of the study show that cultural sustainability in contemporary fashion has been implemented through safeguarding and respecting indigenous cultures and developing cultural elements into creative design.

• 대한한의학원전학회지
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• 제35권1호
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• pp.173-183
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• 2022

Objectives : The publication of a specialized medical text on a specific disease at a specific time means that the disease which had broken out previously has become a problem throughout society. In this paper, changes in perception of the pediatric infectious diseases Douchuang(痘瘡, smallpox) and Mazhen(麻疹) were examined in the medical texts, the Donguibogam, Jejungsinpyeon, Yaksandang Sinjip Uibang Geumnangjibo, and the Uijongboik. Methods : Entries on Mazhen are brief within the Donguibogam which was published before its pandemic, while in the Jejungsinpyeon, which was published after Joseon had experienced the pandemic, understanding of the disease is rather insufficient. In the text Yaksandang Sinjip Uibang Geumnangjibo, which was published in the early 19th century, there is an abundance of personal accounts on the treatment of Douchuang and Mazhen. In the Uijongboik, various treatment methods of Douchuang and Mazhen could be found. Results & Conclusions : These findings could be interpreted as reflecting a development in medical knowledge of Hongzhen(紅疹) after years of experience dealing with the disease, which had been insufficient in the past as could be found in private medical texts written after the great Hongyi(紅疫, measles) pandemic had already passed. In that time Hongzhen(紅疹) had become one of the most important pediatric diseases, and peoples' perspectives had also changed accordingly.

• 항공우주시스템공학회지
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• 제16권6호
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• pp.123-128
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• 2022

본 연구는 전개형 SAR 안테나에 적용하기 위한 비폭발 분리장치를 제안하였다. Ni-Cr 와이어를 감아 제작된 분리장치를 이용하여 SAR 안테나의 벨트가 전개되지 않도록 구속한다. 분리 장치를 구속하는 Ni-Cr 와이어는 발열을 통해 절단함으로써 벨트 전개 시 충격량을 최소화한다. 분리장치의 설계를 위해 설계하중(99g)과 preload를 고려하여 AL과 Ti을 대상으로 유한요소 해석을 수행하였다. AL을 이용 시 해석결과, 최대 변형량이 0.256 mm 발생하였고, 안전마진은 +0.09로 확인되었다. 또한 궤도상 열분석을 수행하여 온도분포를 확인한 결과, 최저온 궤도와 최고온 궤도에서 -50~+2℃의 온도분포와 -10~+90℃의 온도분포를 각각 나타내어 우주환경에서도 구속분리장치가 안정적임을 입증하였다.

• 대한본초학회지
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• 제28권2호
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• pp.61-65
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• 2013

Objectives : Samchulgeonbi-tang (shenzhujianpi-tang) has been prescribed as one of traditional herbal medicine for treatment of stomach diseases since ancient time in Korea. Samchulgeonbi-tang extract was fermented by Lactobacillus spp. for improving the effect. However, the toxicity and safety of fermented Samchulgeonbi-tang (FS) extract were not confirmed. Therefore, this study was performed to evaluate the acute toxicity and safety of FS extract. Methods : To evaluate the acute toxicity and safety of FS extract, several doses of FS extract, 0, 500, 1000 and 2000 mg/kg, were orally administered to 20 male and 20 female ICR mice, respectively. After treatment with FS extract, we observed mortality, general toxicity, behavior and change of body weight for the 14 days. After 14 days of oral administration, all mice were sacrificed and hematological parameters were analyzed from blood serum. Results : In present study, the toxic signs such as mortality or abnormal behaviors by FS extract were not observed. There are no significant differences between FS-treated group and control group in body weight, organ weights, and hematological parameters. Conclusions : The remarkable adverse effects by FS extract were not observed in ICR mice. Also, any death was not occurred at all treated FS doses, 500, 1000 and 2000 mg/kg. Therefore, the approximate lethal dose (ALD) of FS extract may be more than 2000 mg/kg.

• 대한한의학원전학회지
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• 제35권3호
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• pp.59-69
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• 2022

Objectives : The existence of specialized medical texts on a certain disease is reflective of its prevalence of the time. Smallpox and measles were major pediatric diseases, of which previous studies examined the outbreak of measles in late Joseon and the relationship among various specialized texts, and how records of the two diseases in the general medical literature has changed chronologically. Research on the two diseases recorded in different texts written by the same author has not been conducted before. Methods : Examination of the organization of the smallpox and measles parts in the Yosandangsinjipuibangkeumnangjibo and Bojeoksinbang, followed by comparative analysis was undertaken. Results : While the two texts show great similarity in the general contents of smallpox and measles, there was difference in the way they were written. In the case of the Yosandangsinjipuibangkeumnangjibo the author lists referenced literature, while in the Bojeoksinbang he does not. Also, compared to the Yosandangsinjipuibangkeumnangjibo, the Bojeoksinbang has detailed titles for the contents in both introduction and the detailed parts, while in the Bojeoksinbang there are contents that could not be found in the Yosandangsinjipuibangkeumnangjibo, along with more pattern differentiation in the former. Conclusions : The Yosandangsinjipuibangkeumnangjibo which was published in May of 1806 is a general type of medical text, in which the part on pediatrics is positioned in the first two volumes out of the entire 12 volumes, indicative of the author's emphasis on pediatric disease. The Bojeoksinbang which was published in December of 1806 discusses in-depth theories on smallpox and measles out of all pediatric disease, from which we can glimpse a specialized field of pediatrics in the late Joseon period.

• 한국항행학회논문지
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• 제27권6호
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• pp.763-769
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• 2023

무인항공기용 비행제어컴퓨터는 높은 신뢰성이 요구되는 항전 장비로, 고장에 대한 마진을 위해 다중화 설계되는 것이 일반적이다. 다중화 된 비행제어컴퓨터는 채널 간 동기화 및 고장분리를 위해 디스크리트 신호 및 CCDL (cross channel data link)을 통한 인터페이스가 포함되어야 한다. 무인항공기 기술이 발전함에 따라 민간 및 군에서 AAM (advanced air mobility) 및 저피탐 등 다양한 형태의 플랫폼들이 개발되고 있으며, 이러한 플랫폼들은 고성능 비행제어를 위한 제어 성능 고도화 및 탑재장비의 SWaP (size, weight and power) 최적화를 요구하고 있다. 본 논문에서는 이러한 무인항공기용 최적화된 다중화 비행제어컴퓨터 아키텍처를 설계하고 입출력 제어를 위한 소프트웨어 설계를 수행하였다. 또한 구현된 비행제어컴퓨터와 입출력 소프트웨어를 통해 입출력 처리 성능을 평가 하였다.