• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.1
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• pp.434-439
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• 2019

Recently, interest in urban temperature change and ground surface temperature change has been increasing due to weather phenomenon due to global warming, heat island phenomenon caused by urbanization in urban areas. In Korea, weather data such as temperature and precipitation have been collected since 1904. In recent years, there are 96 ASOS stations and 494 AWS weather observation stations. However, in the case of terrestrial networks, terrestrial meteorological data except measurement points are predicted through interpolation because they provide point data for each installation point. In this study, to improve the resolution of ground surface temperature measurement, the surface temperature using satellite image was calculated and its applicability was analyzed. For this purpose, the satellite images of Landsat 8 OLI TIRS were obtained for Seoul Metropolitan City by seasons and transformed to surface temperature by applying NASA equation to the thermal bands. The ground measurement data was based on the temperature data measured by AWS. Since the AWS temperature data is station based point data, interpolation is performed by Kriging interpolation method for comparison with Landsat image. As a result of comparing the satellite image base surface temperature with the AWS temperature data, the temperature difference according to the season was calculated as fall, winter, summer, based on the RMSE value, Spring, in order of applicability of Landsat satellite image. The use of that attribute and AWS support starts at $2.11^{\circ}C$ and RMSE ${\pm}3.84^{\circ}C$, which reflects information from the extended NASA.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2016.10a
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• pp.561-564
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• 2016

If using crime map which represents criminal section that violent crimes targeting women frequently happened, the police could prevent additional crimes by positioning themselves intensively in expected crime zones and each individual could avoid being damaged by referring information of criminal zones. In this paper, by analyzing crimes targeting women and offender information which is provided in public-opened datum portal, we suppose a system which prevents crimes that calculates locational danger and, by considering location and age group of users, provides user-customized information of danger. By crawling the criminals datum which is provided in public-opened datum portal, It collects them. About the areas which happened sexual crimes, calculating danger of crime based on statistical crime information including criminal information, residence of offenders, areas which happened sexual crimes, sentences and the number of crime, this system is able to visualize the areas which sexual crimes happened based on information of danger grade representing on user's location. The score of danger calculated in location unit can provide criminal information according to location and ages of users by interacting GIS.

• Korean Journal of Medicinal Crop Science
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• v.27 no.4
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• pp.271-277
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• 2019

Background: Rehmannia glutinosa (Gaertn.) Libosch. ex Steud. has long been used as a traditional medicinal plant in Korea. This study was carried out to investigate the emergence conditions during the seedling periods in R. glutinosa. Methods and Results: The rhizomes of R. glutinosa variety (Jihwang 1) were harvested in the 22, March, 2018. The rhizomes were sown on in 50-cell plug trays. The emergence rates of seedlings at $15^{\circ}C$, $20^{\circ}C$, $25-40^{\circ}C$, and $45^{\circ}C$ treatment seedling were 1.3%, 96%, 100% and 0%, respectively. Rhizome rot was occurred at the temperature of $15^{\circ}C$ and $45^{\circ}C$. The emergence rates of seedlings in high moisture (HM), moderate moisture (MM) and low moisture (LM) treatments at $35^{\circ}C$ were 99.3%, 100%, and 0%, respectively. Drought damage was recorded in plant with the LM treatment. Seedling quality surveys were carried out at 10-days intervals from 10 to 60 days after sowing (DAS). Leaf length and leaf width were increasing until 50 DAS and the number of leaves was increasing until 60 DAS. Root length was increasing until 40 DAS, and then, flowering occurred from 30 to 60 DAS. Lastly, at 40 DAS, leaf aging and root enlargement was observed. Conclusions: We concluded that the emergence of seedlings was possible in the range of 20 to $40^{\circ}C$. Considering drying and rotting damage, we concluded that the moderate level of moisture is most appropriate for seedling emergence. In addition, we concluded that optimal seedling periods are between 30 and 40 DAS.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.12
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• pp.150-160
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• 2018

The purpose of this study is to classify the attitudes of Korean people regarding foreign workers and to analyze the influence factors. Analysis of the attitude difference and the influential factors utilized the SPSS ${\chi}^2$ test and multinomial logistic regression analysis using 2016 data obtained from the 'Koreans' Consciousness and Values'. Socio-demographic variables, national identity, and socioeconomic variables were used as explanatory variables. The attitude types (friendly, negative, and dual) of respondents were identified, and the influence of explanatory variables influencing these attitudes was identified. Analysis found they have a relatively generous stance on granting legal rights, while they are negative regarding the economic and social threats from foreign workers. As a result of analyzing the factors affecting attitudes, there are significant differences in each influence. However, negative attitudes and dual attitude concerning with negative legal rights found common to the influence of the factors of national identity. Gender and ratio of foreign workers were influential factors for dual attitudes with a high economic threat. On the other hand, socioeconomic factors reflecting the realistic conflict theory were not found to have any effect. The negative attitude of foreign workers in our society can be regarded as cognitive threats rather than realistic experiences or conflicts.

• Journal of the Korea Convergence Society
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• v.10 no.5
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• pp.407-415
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• 2019

The purpose of this study was to analyze the dietary habits and health risk behaviors of adolescents who experienced part-time job. For this study raw data from the 13th Youth Health Behavior Online Survey (2017) was examined. Dietary habits and health risk behaviors for 62,823 adolescents were analyzed according to the experience of part-time job. Collected data were analyzed with the SPSS 24.0 program using descriptive statistics and logistic regression analysis, to which the complex sample design was applied. The odds ratio of no fruit intake in adolescents who experienced part-time job compared to adolescents who have not experienced a part-time job was 1.20 (CI: 1.10-1.31). The odds ratio of fastfood intake in adolescents who experienced part-time job compared to adolescents who have not experienced a part-time job was 1.28 (CI: 1.19-1.38). The odds ratio of present smoking in adolescents who experienced part-time job compared to adolescents who have not experienced a part-time job was 3.48 (CI: 3.17-3.84). The odds ratio of present drinking was 3.36 (CI: 3.14-3.96). The odds ratio of high caffeine intake was 1.11 (CI: 1.04-1.19). The odds ratio of high caffeine intake was 2.29 (CI: 2.06-2.55). In developing health education programs for adolescents, it is necessary to include dietary habits and health risk behavior according to part-time experience.

• Journal of the Korean Wood Science and Technology
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• v.49 no.6
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• pp.643-657
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• 2021

In order to establish a strategy for revitalizing wood culture, a survey was conducted on the level of public awareness of wood culture and the experience of wood cultural resources by type. According to the survey, 31.4% of respondents had the images of cultural heritage such as palaces, temples, Hanoks, and cultural assets for wood cultural resources. The main reasons for having no image of wood cultural resources were the ambiguous concept and lack of interest in wood cultural resources. The importance of wood cultural resources classified into seven categories was in the order of cultural heritage, architecture of wood, cultural facilities, cultural festivals, wood products, cultural education, cultural contents. In the survey on the necessity and sufficiency of information on wood cultural resources, 46.7% of respondents needed more information to experience of wood cultural resources, while 64.8% of them had lacked information about wood cultural resources. More than half of the respondents wanted to experience of wood culture within next year, but about 20% of respondents participated in seven kinds of wood cultural resources, except wood products used in daily life. Based on these results, a systematic strategy should be developed to expand the opportunity for the public to experience of wood cultural resources and to promote them to public.

• Phonetics and Speech Sciences
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• v.13 no.3
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• pp.39-51
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• 2021

Based on spontaneous speech data collected in 2020, this study examined the production and perception of Korean lenis, aspirated, and fortis stops. Unlike the controlled experiments of previous studies, lenis and aspirated stops of males in their 30s were not distinguished by voice onset time (VOT) in spontaneous speech. Perceptual experiments were conducted on young females, the leaders of language change. F0 was found to serve as the primary cue for the perception of lenis stops, and then VOT distinguished the aspirated and fortis stops. The fact that the sounds were always perceived as lenis stops when F0 was low, irrespective of whether VOT was short or long, showed that F0 plays an absolute role in the perception of lenis stops. However, in some cases the aspirated and lenis stops were distinguished only by VOT, which does not happen in production. In terms of sound change, disagreement between production and perception systems occurs when sound change is in progress. In particular, when production change precedes perception change, it indicates that the sound change is in its latter stages. Young females still maintain the previous system in perception because the distinction of lenis and aspirated stops by VOT was valid in their parents' generation. In other words, VOT is still used for perception to communicate with other groups.

• Journal of the Korea Society of Computer and Information
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• v.26 no.8
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• pp.83-90
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• 2021

In this paper, effects on industrial accident prevention based on better safety and health environment by utilizing ergonomics expert were studied. This study was mainly based on the data from 'the survey for occupational safety and health trend' conducted by Occupational Safety and Health Research Institute. The number of industries participated in the survey was 2,084. Main results of the study were as follows; 1) Only 22.9% of the industries participated in the survey utilized ergonomics expert. The rest of the industries have never had an ergonomics expert due to the reasons such as lack of knowledge for the field of ergonomics, etc. 2) Specific activities done by the industries with ergonomics expert in order to have better safety & health were 'providing work orders'(94.8%), 'providing monitoring guidelines'(85.5%), 'providing information for dangerous work'(95.8%), 'providing safety education'(96.6%), and 'other safety management'(94.1%). 3) When the odds ratio for the levels of communication and the levels of environmental stability regarding safety & health for the different groups(with experts and without experts), it was found that the group with ergonomics experts had a significant higher ORs(2.391, 95% confidence interval(1.949-2.932) and 2.128, 95% confidence interval(1.786-2.537)) respectively than those of the industries without ergonomics expert. The results suggested that ergonomics expert has been unique in most of time in terms of his/her contributions in the field of industrial safety and health.

• Applied Chemistry for Engineering
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• v.22 no.1
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• pp.56-60
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• 2011

This study investigates the effect of Salicornia bigelovii extract on the activities of antioxidant, anti-wrinkle and whitening. Among amino acids, the glutamic acid concentration was the highest with an order of proline > alanine > $\gamma$-amino-n-butyric acid > arginine. The total polyphenol concentration and antioxidant activity were an order of ethyl acetate extract > n-butanol extract > hexane extract > hot water extract > ethanol extract. Especially, when ethylacetate was used as extractant, the total polyphenol concentration and antioxidant activity were 31.6 mg/mL and 82.6%, respectively. The inhibition activity of tyrosinase was increased with the increase concentration of ethylacetate extract. Especially, when the extract concentration was increased from 20 to 100 mg/mL, it was raised from 15.2 to 98.2%. In the case of inhibition activities of elastase, and collagenase, they were also increased with the increase concentration of ethylacetate extract. When the extract concentrations were increased from 20 to 100 ug/mL, they were enhanced from 2.9 to 32.5% and from 3.8 to 29.7%, respectively. The results show that the ethyl acetate extract of Salicornia bigelovii can be applied as sources for functional cosmetics and pharmaceuticals.

• (The)Study of the Eastern Classic
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• no.33
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• pp.97-129
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• 2008

Sin-jeokdo (Hogye, 1574-1663) was a general of patriotic army who protected the region of Euseong at the time of Qing dynasty's invasion in 1627(Jungmyo) and 1636(Byongja). He was an prominent figure outside government as well as a faithful confucian who spent his life with reading and teaching junior scholars after disgraceful treaty in the year of Byongja. Hogye understood the neo-Confucianism in terms of the whole duty of men(綱常) and righteousness(義理) which was in the status of sole official academic subject and thought its practice only hinged upon the practice of filial piety and brotherly love together with loyalty and sincerity based on morals between sovereign and subject, father and son. He, therefore, emphasized that the righteousness only can be accomplished by dying of children and subjects for filial piety and fidelity respectively, at the time of commotion. This was his spirit of righteousness which repelled Japanese army in the Imjin War and he insisted on defeating Japanese army in accordance with this spirit. Hogye's practice of righteousness is grounded on the spirit of Chosun Confucianism which stressed actual practices of moral principles and duties. His practice of righteousness shows internalized cultural sinocentrism and moral-centric, ethic-centric characteristic of Chosun Confucianism. Moreover, the moral consciousness which was shown in Hogye's thought helped to keep Korean's pride and observe morality and it served itself as a basis of commencement of nationalistic military, religious movements afterwards.