• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.3
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• pp.231-242
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• 2019

The aim of this study was the relationship between smoking, alcohol drinking and vitamin D level among Korean adults using data from the '6th(2013-2014) Korean National Health and Nutrition Examination Survey'. The data used in this study were analyzed for 3,565 people who were over the age of 19 ages and checked vitamin D level and consumption frequencies of vitamin D rich foods among 15,568 respondents to the '6th(2013-2014) Korean National Health and Nutrition Examination Survey'. The subjects were divided into four groups: None group(non-smoking and non-alcohol drinking), smoking only group, alcohol drinking only group and both group (smoking and alcohol drinking). The mean serum vitamin D level of the subjects was $16.5{\pm}0.20ng/mL$ and 73.5% of vitamin D levels were insufficient and deficiency. The results from hierarchical multiple logistic regression showed that the Odds ratio for insufficient vitamin D due to smoking and alcohol drinking were significantly higher in the smoking only group 2.281(95% CI 1.080-4.817)times and both group 1.356(95% CI 1.010-1.922)times than none group. Our results showed the relationship between smoking, alcohol drinking and vitamin D level was significant in Korean adults. Future studies, such as a more systematic cohort study investigating the relationship between smoking, alcohol drinking and vitamin D level may be helpful in confirming the causal relationship between smoking, alcohol drinking and vitamin D level.

• Korean Public Health Research
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• v.44 no.4
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• pp.51-65
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• 2018

Objective : Smoking can increase the risk of secondary conditions for people with disabilities, which can in turn counteract primary disorders and exacerbate existing disorders. More active interventions for smoking cessation are necessary for people with disabilities because the physical condition of people with disabilities is more vulnerable, and risk factors such as smoking, drinking, obesity, and stress can have a decisive influence on people with disabilities compared to non-disabled people. Methods : In this study, the subjects who participated in National Health and Nutrition Survey of 2013 were those aged over 19 and smoker. The final 299 people with disability and 4,260 people without disability were analyzed. Results : Current smoking rate was 21.5% of non-disabled people and 21.4% of disabled people respectively. Factors influencing the current smoking rate of the disabled people were analyzed by type of household, economic status, home ownership, drinking, binge drinking, activity limit. Conclusions : In order to reduce socioeconomic inequalities of smoking and to actively intervene with the disabled, there need a new approach strategy focusing on people with disabilities.

• Research in Plant Disease
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• v.24 no.4
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• pp.328-331
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• 2018

A severe disease with leaf spots and necrotic symptoms was observed in cucumber (Cucumis sativus L.) seedlings in April 2018 at a nursery in Kimjae, Korea (35o 47'09.8"N 127o 2'24.3"E). The infected plants initially showed spots on water-soaked cotyledons which, at later stages, enlarged and spread to the leaves, which the lesions becoming dry and chlorotic. The symptomatic samples were collected from cucumber and the isolates were cultured on LB agar. The representative bacterial strain selected for identification showed fluorescent on King's medium B, was potato rot-positive, levan and arginine dihydrolase-negative, oxidase-negative and tobacco hypersensitivity-positive in LOPAT group 2 as determined by LOPAT tests. A pathogenicity test was carried out on a 3-week-old cucumber. After 3 days of inoculation, leaf spots and necrotic symptoms appeared on the cucumber, similar to the originally infected plants. The infecting bacterial strain was identified as Pseudomonas viridiflava, by 16S rDNA sequence analysis. This is the first report of leaf spot diseases on cucumber caused by P. viridiflava.

• Journal of Korean society of Dental Hygiene
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• v.19 no.2
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• pp.183-194
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• 2019

Objectives: This study aimed to identify the factors related to the completion status of continuing education and to help develop professional ability by presenting improvement directions. Methods: A questionnaire survey involving 500 dental hygienists working at 155 dental clinics in Gwang-ju was conducted between June 19 and July 29, 2017. Descriptive analysis, chi-square tests, and t-tests were conducted using Statistical Package for Social Sciences Version 21.0 for Windows. Finally, to investigate the factors related to the completion of continuing education, logistic regression analysis was performed. Results: The odds ratio (OR) was higher in the group with more than 16 years of total work carrier (OR=3.40, 95% confidence interval (CI)=1.22-9.45) than that in the group with 1-5 years of work carrier. Groups receiving information from associations (OR=5.35, 95% CI=1.74-16.40), groups that directly search for information (OR=6.53, 95% CI=1.84-23.12), and groups receiving information from colleagues (OR=3.55, 95% CI=1.17-10.77) had higher ORs than groups receiving no information. The OR was higher in the group receiving cost support for participation (OR=2.20, 95% CI=1.06-4.55) than the group receiving no support. Regarding total education completion status in 2012-2014, groups that completed grades 1-7 (OR=2.51, 95% CI=1.35-4.64) and those that completed grade 8 or higher (OR=14.37, 95% CI=7.68-26.89) had higher ORs than groups who received no education. Conclusions: The rate of completion of continuing education can be increased by reviewing the course contents, publicity activities, and cost of continuing education.

• Journal of agricultural medicine and community health
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• v.45 no.4
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• pp.208-220
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• 2020

Objectives: The purpose of this study was to identify factors influencing the posttraumatic growth of maritime police officers. Methods: The subjects include 293 maritime police officers that received basic and professional education at the Korea Coast Guard Academy on June 17~July 31, 2019. Data was analyzed in frequency, percentage, mean, standard deviation, t-test, variance analysis, Pearson's correlation analysis, and multiple regression analysis with the SPSS Version 21.0 program. Results: The findings show that the maritime police officers scored mean 39.72±16.56 points in posttraumatic growth. marital status(β=.194, p=.002), smoking(β=.152, p=.010), regular exercise(β=-.185, p<.001), total duration of service(β=-.154, p=.033), resilience(β=.310, p<.001), social support (β=.250, p<.001), and collective culture(β=.158, p=.004) had impacts on their posttraumatic growth. Conclusion: The findings of the study demonstrate that the posttraumatic growth of maritime police officers was under the influence of supports from families and peers, working environment, and culture as well as their individual characteristics.

• Journal of Broadcast Engineering
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• v.26 no.6
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• pp.714-724
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• 2021

The point cloud content is immersive content recorded by acquiring points and colors corresponding to the real environment and objects having three-dimensional location information. When a point cloud content consisting of three-dimensional points having position and color information is enlarged and rendered, the gap between the points widens and an empty hole occurs. In this paper, we propose a method for improving the quality of point cloud contents through inverse transformation-based interpolation using depth information for holes by finding holes that occur due to the gap between points when expanding the point cloud. The points on the back are rendered between the holes created by the gap between the points, acting as a hindrance to applying the interpolation method. To solve this, remove the points corresponding to the back side of the point cloud. Next, a depth map at the point in time when an empty hole is generated is extracted. Finally, inverse transform is performed to extract pixels from the original data. As a result of rendering content by the proposed method, the rendering quality improved by 1.2 dB in terms of average PSNR compared to the conventional method of increasing the size to fill the blank area.

• Journal of Broadcast Engineering
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• v.27 no.6
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• pp.923-935
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• 2022

This paper deals with detection and classification of leaf diseases for phenomics systems. As the smart farm systems of plants are increased, It is important to determine quickly the abnormal growth of plants without supervisors. This paper considers the color distribution and shape information of leaf diseases, and designs two deep leaning networks in training the leaf diseases. In the first step, color distribution of input image is analyzed for possible diseases. In the second step, the image is first partitioned into small segments using mean shift clustering, and the color information of each segment is inspected by the proposed Color Network. When a segment is determined as disease, the shape parameters of the segment are extracted and inspected by proposed Shape Network to classify the leaf disease types in the third step. According to the experiments with two types of diseases (frogeye/rust and tipburn) for apple leaves and iceberg, the leaf diseases are detected with 92.3% recall for a segment and with 99.3% recall for an input image where there are usually more than two disease segments. The proposed method is useful for detecting leaf diseases quickly in the smart farm environment, and is extendible to various types of new plants and leaf diseases without additional learning.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.21 no.6
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• pp.115-131
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• 2022

Carbon dioxide (CO₂) emissions from the transportation sector in South Korea accounts for 16.5% of all CO₂ emissions, and road transportation accounts for 96.5% of this sector's emissions in South Korea. Hence, constant research is being carried out on methods to reduce CO₂ emissions from this sector. With the emerging use of smart crossings, attempts to monitor individual vehicles are increasing. Moreover, the potential commercial deployment of autonomous vehicles increases the possibility of obtaining individual vehicle data. As such, CO₂ emission research was conducted at five signalized intersections in the Gangnam District, Seoul, using data such as vehicle type, speed, acceleration, etc., obtained from image detectors located at each intersection. The collected data were then applied to the MOtor Vehicle Emission Simulator (MOVES)-Matrix model-which was developed to obtain second-by-second vehicle activity data and analyze daily CO₂ emissions from the studied intersections. After analyzing two large and three small intersections, the results indicated that 3.1 metric tons of CO₂ were emitted per day at each intersection. This study reveals a new possibility of analyzing CO₂ emissions using actual individual vehicle data using an improved analysis model. This study also emphasizes the importance of more accurate CO₂ emission analyses.

• Journal of Practical Agriculture & Fisheries Research
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• v.9 no.1
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• pp.26-32
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• 2007

This study was conducted to determine the regional adaptability of Fagopyrum tataricum in Korea. Suwon, Chunchon, Kangneung, Yonchon and Taean at different experiment sites had soil pH of 6.52, 5.65, 5.7, 5.89 and 5.82, respectively, being at more unfavorable conditions than a recommended soil condition for yam cultivation with pH 5.8~6.7. The amounts of organic matter in Suwon, Chunchon, Taean, and Yonchon were 1.96%, 4.51%, 3.76%, 1.89% and 1.12%, respectively, being at more favorable conditions than a recommended organic matter in soil for yam cultivation with 2.0~3.0%. As the results from cultivating of large plantings in different regions, Suwon showed grain weight in plant of 7.8g. In seed extract analysis, rutin contents were 44.9mg/100g in F. esculentum and 1475.5mg/100g in F. tataricum., respectively.

• Journal of Practical Agriculture & Fisheries Research
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• v.7 no.1
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• pp.64-73
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• 2005

This study was done to determine the regional adaptability of Dioscorea opposita in Korea. Suwon, Chunchon, Kangneung, Yonchon and Taean had soil pH of 6.62, 5.65, 5.9, 5.9 and 5.82, respectively, being at more unfavorable conditions than a standard soil condition for yam with pH 6.2. The amounts of organic matter in Suwon, Chunchon, Taean, and Yonchon were 1.96%, 4.51%, 3.76%, 1.89% and 1.12%, respectively, being at more favorable conditions than a standard organic matter in soil for yam with 2.0~3.0%. As the results from cultivating of large plantings in different regions, Suwon showed the largest the tuber dry weight of 135g. In comparison of general component between round yam and short yam in the area of Kangneung, protein of round yam(3.30%) was higher than that of short yam(1.40%). Dryness in round yam(36.5%) was lower than that of short yam(28.9%), indicating a higher dry weight ratio of round yam. In tuber extracts analysis, saponins content was respectively 23.7mg/g in round yam and 10.4mg/g in short yam.