• 한국환경농학회지
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• 제39권2호
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• pp.83-88
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• 2020

BACKGROUND: This study was carried out to investigate residual characteristics of diethofencarb during ginseng cultivation and processing, and to establish the maximum residue limits (MRL) of ginseng and its processed products. METHODS AND RESULTS: Supervised field trials were conducted from three fields located at Seosan, Goesan and Jeongeup in Korea. Diethofencarb 25% WP was diluted by 500 times and sprayed 4 times onto the ginseng with 10 days interval. The samples were collected at 80 days after final application. The residual amounts of diethofencarb ranged from 0.074 to 0.460 mg/kg in fresh ginseng, from 0.292 to 0.720 mg/kg in dried ginseng, and from 0.208 to 0.557 mg/kg in red ginseng. These data exceeded the ginseng's MRL, 0.3 mg/kg. The processing factors of diethofencarb in processed products were found to be 2.64 and 1.99, respectively for dried and red ginseng. CONCLUSION: Given the lower residual concentration of red ginseng that goes through a more complicated process than dried ginseng, the residual concentrations of diethofencarb in processed ginseng products were found to be dependent on processing method. Therefore, it is necessary to reconsider the MRL of diethofencarb in fresh ginseng and its processed products.

• 한국환경교육학회지:환경교육
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• 제19권3호
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• pp.123-137
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• 2006

Since 1985, the Ministry of Environment has supported environmental education in schools through Environment Conservation Model School initiative. Selected elementary, middle, high schools and kindergartens were designated as model schools for environment conservation programs every 2 years to develop model cases that can be adopted at other schools to promote more structured and effective environmental education. These supporting programs played a central role in developing an environmental education model for formal schools and enhance the importance of environmental education in school curriculum. This study aims to evaluate the current statues of environment conservation model schools and support to environment conservation model school initiatives which have created basic framework to enable the continued development of environmental education. For the study, documents and reports from 1985 to 2005 were analyzed, which included operation guidelines for model schools, case studies, implementation reports along with the systematic analysis of documentations. Also this study included interviews and a survey with people responsible for running programs, and consultation processes with experts to address the current status and issues related to Environment Conservation Model School initiative. Based on the present status and issues, the recommendations for improving Environment Conservation Model School initiative were provided.

• 한국재료학회지
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• 제9권11호
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• pp.1112-1116
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• 1999

$\textrm{Bi}_{2}\textrm{Te}_{3}$의 고/액 계면을 통하여 전류밀도와 방향을 달리 하면서 통전시켰을 때 발생하는 고상, 액상 및 고/액 계면에서의 미소 온도변화를 측정하였다. 이 냉각(가열) 효과는 전류밀도, 통전방향 및 시간에 따라 다르게 나타났으며, 온도변화에 미치는 Peltier 열, Thomson 열 및 Joule 열의 영향을 이론 및 실험에 의해 각각 분류하였다. $\textrm{Bi}_{2}\textrm{Te}_{3}$의 고/액상간의 Peltier 계수는 -1.10$\times\textrm{10}^{-1}$V이었으며, 고상과 액상의 Thomson 계수는 각각 7.31\times\textrm{10}^{-4}V/K와 5.77\times\textrm{10}^{-5}V/K이었다. 직류를 통전하면서 Bi$_2$Te$_3$결정을 성장한 결과, 고상에서 액상으로 통전한 경우, Peltier 냉각에 의한 온도구배의 상승으로 방향성이 향상된 결정을 얻을 수 있었지만, 전류의 방향을 반대로 하면, 결정성 향상에 별 도움을 주지 못하였다.

• 한국응급구조학회지
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• 제23권3호
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• pp.97-110
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• 2019

Purpose: This study aimed to investigate the role of life stress in the relation between health behaviors and bioethics awareness among paramedic students. Methods: This study recruited 238 paramedic students in F and R areas as participants. Multiple regression analysis was performed using Baron and Kenny's three-step procedure. Results: In the first stage, health behaviors had a significant effect on life stress (β=-.202, p<.01). In the second stage, health behaviors had a significant effect on bioethics awareness (β=.240, p<.001). In the third stage, life stress had a significant influence on bioethics awareness (β=-.167, p<.01). In the fourth stage, the regression coefficient of the third stage (β=.137) was less than that of the second stage (β=.159). In addition, when controlling for life stress, health behavior was shown to affect bioethics awareness (β=.206, p<.01). The mediating effect of life stress was found to be significant in the relation between health behavior and bioethics awareness (Z=2.04, p<.05). Conclusion: As health behavior is a factor that affects bioethics awareness through the mediation of living stress, universities should prepare training programs to improve the health behavior and reduce the life stress among students.

• 한국지역지리학회지
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• 제21권2호
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• pp.319-341
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• 2015

조선시대의 읍성 취락은 중앙 정부가 지방의 각 고을에 계획적으로 건설한 행정 타운으로서 우리나라의 전통 도시를 대변한다. 읍성에는 객사, 동헌과 내아, 질청을 비롯한 다양한 행정 및 통치 시설들이 들어서 있었고 일반 백성들의 민가가 들어서 있는 경우도 많았다. 본 연구는 조선후기 읍성 취락의 주요 경관 요소와 경관 구성의 특성을 고찰하고 그 결과를 지적원도(1913)에 재현하는 데에 목적이 있다. 이를 위해 연구자는 현재적 재현을 위한 복원 대상 시기를 설정하는 일이 우선되어야 한다고 보았다. 연구자는 조선 읍성 경관의 완성기를 19세기 전반기로 규정하고, 이 시기 전국의 읍성 분포 및 주요 읍성 경관 요소의 전국적 보편성과 지역적 특수성을 파악하였다. 이 작업을 토대로, 태안읍성, 서산읍성, 해미읍성을 사례로 읍성 경관 완성기의 읍성 내 주요 경관 요소와 그들의 위치, 전체적 공간 구성을 1910년대의 지적원도 위에 나타내 보았다.

• 한국농공학회논문집
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• 제56권5호
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• pp.55-65
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• 2014

Radar remote sensing is appropriate for rice monitoring because the areas where this crop is cultivated are often cloudy and rainy. Especially, Synthetic Aperture Radar (SAR) can acquire remote sensing information with a high temporal resolution in tropical and subtropical regions due to its all-weather capability. This paper analyzes the relationships between backscattering coefficients of rice measured by RADARSAT-2 SAR and growth parameters during a rice growth period. And we applied the relationships to crop monitoring of paddy rice in North Korea. As a result, plant height and Leaf Area Index (LAI) increased until Day Of Year (DOY) 234 and then decreased, while fresh weight and dry weight increased until DOY 253. Correlation coefficients revealed that Horizontal transmit and Horizontal receive polarization (HH)-polarization backscattering coefficients were correlated highly with plant height (r=0.95), fresh weight (r=0.92), vegetation water content (r=0.91), LAI (r=0.90), and dry weight (r=0.89). Based on the observed relationships between backscattering coefficients and variables of cultivation, prediction equations were developed using the HH-polarization backscattering coefficients. Concerning the evaluation for the applicability of the LAI distribution from RADARSAT-2, the LAI statistic was evaluated in comparison with LAI distribution from RapidEye image. And LAI distributions in Pyongyang were presented to show spatial variability for unaccessible areas.

• 한국지반공학회지:지반
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• 제14권1호
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• pp.71-80
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• 1998

서해안에 위치한 서산지역에서 연구용 prestressed concrete 말뚝을 3본을 설치하고 주변에서 콘관입시험을 수행하여 말뚝의 주면마찰력을 추정하는 연구를 수행했다. 본 연구에서 이용한 말뚝 지지력 산정식은 세계적으로 많이 이용하고 있는 Schmertmann방법, Tumay & Fakroo방법 및 프랑스의 LCPC방법을 이용하였다. 콘관입시험의 측정결과를 이용하여 3가지 방법으로 예측한 말뚝 의 주면마찰력과 현장에서 수행한 정역학적 재하시험 및 동재하시험에서 산정된 주면마찰력과의 비교하여 3가지 예측방법들에 대한 신뢰성을 평가했다. CPT를 이용한 3가지 예측식으로 산정한 말뚝의 주면마찰력은 전체적으로 25일과 42일이 지난후 수행한 정재하시험에 의한 주면마찰력을 상당히 과소평가했으나, 항타시좌 말뚝설치후 2주가 지난 시점에 수행한 동재하시험결과와는 유사한 말뚝의 주면마찰력을 예측했다.

• 보건교육건강증진학회지
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• 제26권4호
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• pp.23-33
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• 2009

Objectives: This study was to examined the level of psychosocial factors, dietary habits and DMFT index and to examined the relationship among variables in 12-year-old adolescents. Methods: Participants were 1,831 total students from 14 middle school who lived Seosan with mean age of 12.46 years. Data was collected using a self administrated questionnaire from April 13 to May 24, 2009. Psychosocial factors and dietary habits were measured using the 5-items and 10-items. A trained investigator made an oral examination of them in natural light using a mirror and explorer to determine their DMFT index. Data were analyzed with t-test, one-way ANOVA, and Tukey test, pearson correlation coefficient using the SPSS WIN 15.0 program. Results: Regarding dietary self-efficacy, perceived benefit and perceived barrier degree, the subjects achieved a mean of $3.89{\pm}0.69$, $3.48{\pm}0.63$ and $3.82{\pm}0.63$ out of a maximum 5 points. And the dietary habit degree of subjects achieved a mean of $10.69{\pm}4.02$ out of a maximum 20 points and the DMFT index were $1.91{\pm}2.26$. Dietary habits was positively correlated with psychosocial factors and negatively correlated with DMFT index. And then perceived barrier score were negatively correlated with DMFT index. Conclusion: Based on the findings, dental caries experience is associated with perceived barrier and dietary habits. These results suggest that the implementation of health promotion should be considered for various psychosocial factors and dietary habits in adolescents.

• 벤처창업연구
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• 제6권1호
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• pp.39-58
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• 2011

본 연구는 프랜차이즈 가맹점을 운영하는 창업주를 대상으로 하여 프랜차이즈 브랜드선정요인인 브랜드인지도, 기술력, 창업자금, 본부의 사업성과 가맹점 사업만족도, 사업성과간의 관계를 알아보는 것이었다. 분석결과 브랜드 선정동기에 따라 사업개시 전 만족도에 유의한 차이를 보이는 것으로 조사되었다. 또한 개시 전 만족도와 개시 후 만족도, 사업 만족도와 사업성과 간에 통계적으로 유의한 영향을 미치는 것으로 분석되었다. 이는 외식업 프랜차이즈산업의 사업성과를 위한 선행요인을 규명하고 각 단계별 중요 선행요인을 규명하였으며 브랜드 선정이후 사업개시전과 개시 후 만족도의 변화요인을 규명함으로서 외식 프랜차이즈 산업의 성과제고를 위한 중요 요인을 실증적으로 규명하였다고 하겠다.

• 한국지역사회생활과학회지
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• 제16권4호
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• pp.125-137
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• 2005

The purpose of this study was to analyze the regional ripple effects and residents' perceptions of the West Coast Highway on four regions of Chung-nam province. The data was collected through questionnaire interviews with 400 residents in four regions of the west coast area. After data cleaning, the statistical methods used were confirmative factor and cluster analysis with 309 sampled from four regions of Dangjin, Boryong, Seosan and Taean. The results of this study were as follows. First, it is classified, according to the residents' perceptions against the opening of the West Coast Highway, into four groups. Group A is the people who haven't lived there long and mainly consists of relatively young (30's-40's) males, while Group B is the people with lower incomes and middle-aged males (40's) who have lived there for 11 to 20 years. Group C is mainly the people who are middle-aged housewives in their 40's and who haven't lived there long and with a relatively higher income. Group D is the people who lived for less than five years and had lower incomes than other groups. The results show that their perceptions against the influence of regional development differ demographically from each other. In conclusion, it was determined that most of them were concerned that it, coupled with the construction of the West Coast Highway, would damage the surrounding countryside but believed it would contribute to the growth of the region's economy. Whereas groups A and B seem to acknowledge the necessity of regional development and environmental protection, groups B and D appear to be more content with the tourism development derived from the West Coast Highway and are paying more attention to such plans than other two groups.