• Journal of Environmental Science International
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• v.26 no.9
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• pp.1073-1080
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• 2017

Manufacturing and technology industries produce large amounts of air pollutants. Ulsan Metropolitan City, South Korea, is well-known for its large industrial complexes; in particular, the concentration of $SO_2$ here is the highest in the country. We assessed $SO_2$ monitoring sites based on conditional and joint entropy, because this is a common method for determining an optimal air monitoring network. Monthly $SO_2$ concentrations from 12 air monitoring sites were collected, and the distribution of spatial locations was determined by kriging. Mean absolute error, Root Mean Squared Error (RMSE), bias and correlation coefficients were employed to evaluate the considered algorithms. An optimal air monitoring network for Ulsan was suggested based on the improvement of RMSE.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2003.11a
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• pp.101-107
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• 2003

해가 지면서 지표면이 냉각되고 지표면의 냉각은 지표부근의 대기를 냉각시켜 상부의 대기보다 차가워지면서 대기의 상태가 안정 상태가 되는데 이 때를 접지 역전층이라고도 하고 야간 경계층이라고도 한다. 야간 경계층은 다음 날 해가 뜨기 전까지 계속 지속되는데 그 고도는 지상 수백m까지 확장될 수도 있다. 이러한 현상은 배출된 대기 오염 물질이 형성된 역전층에 의해 확산이나 수송이 방해를 받게된다. 역전층 상태에서의 오염물질의 배출은 직접적으로 영향을 미치지 않으나, 일출 이후 일사에 의한 지표의 가열로 역전층이 파괴되면서 역전층위의 고농도의 오염물질이 지상으로 유입되어 지표부근에 고농도의 오염을 유발할 수 있다. (중략)

• The Korean Journal of Applied Statistics
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• v.33 no.2
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• pp.215-228
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• 2020

Under Article 19, Paragraph 1 of the Food Industry Promotion Act, Rural Development Administration renews the Korean foods composition table every five years. Before the publication of the tenth revision of the Korean foods composition table in 2021, this paper suggests methods for collecting representative samples of 182 highly consumed foods in Korea. Food markets are categorized by their distribution channels, which are supermarkets and local markets. Eight samples are collected from each category by applying the National Food and Nutrient Analysis Program (NFNAP)'s stratified multi-stage sampling. The NFNAP was implemented in 1997 as a collaborative food composition research effort between the National Institute of Health (NIH) and the US Department of Agriculture (USDA) to secure reliable estimates for the nutrient content of food and beverages consumed by the US population. Selected supermarkets for selecting representative food samples are Emart Kayang, Homeplus Siheung, Lottemart Dongducheon, Emart Suwon, Lottemart Dunsan, Lottemart Yeosu, Emart Ulsan, and Hanaroclub Ulsan. Selected local markets also are Doksandongusijang in Geumcheon-gu and Pungnapsijang in Songpa-gu, Seoul, Ilsansijang in Ilsanseo-gu, Goyang, Unamsijang in Buk-gu, Gwangju, Beopdongsijang in Daedeok-gu, Daejeon, Bongnaesijang in Yeongdo-gu and Jwadongjaeraesijang in Haeundae-gu, Busan, and Jungangsijang in Jinhae-gu, Changwon.

• Economic and Environmental Geology
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• v.37 no.6 s.169
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• pp.657-667
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• 2004

Arsenic was detected in the 29 water samples out of the 46 groundwaters located in the Ulsan metropolitan area and it's concentration ranges from $<0.1\;to\;72{\mu}g/L$. Among them the arsenic concentrations of three samples are over domestic drinking-water requirements $(50{\mu}g/L)$, and those of 10 samples are more than WHO MCLs, $10{\mu}g/L.$. High arsenic groundwater were recognized in the two region; one was near the tectonic line, especially Ulsan iron mine at Dalcheunri and the other was around Hyomundong distributed Jeongia conglomerate. It is estimated that the former is originated from pyrite oxydation type, oxygenated redox, whilst the latter is resulted from oxidation of reducted FeOOH. The species of arsenic in groundwater is in pentavalent arsenic, $H_2AsO_4^-,\;HAsO4_^{-2}$ near tectonic line, and trivalent arsenic, $H_3AsO_3$ around Hyomundong.

• Korean Journal of Ecology and Environment
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• v.52 no.2
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• pp.161-170
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• 2019

Invasive alien plants were identified and recorded in Ulsan city based on field surveys and related literatures. These plants consisted of 147 taxa in total, belonging to 30 families, 93 genera, 144 species, 2 subspecies and 1 variant. The family of Asteraceae was predominant with 42 taxa, followed by Gramineae with 27 taxa and Leguminosae with 15 taxa. According to the result of life-form based distribution analysis revealed that 62 taxa (42.2%) were annual plants, 48 taxa (33.6%) were perennial plants, 34 taxa (23.1%) were biennial plants, and 3 taxa (2%) were woody perennials. Compare to other administrative districts in Korea, prevalence of invasive alien plants in a certain city of Ulsan showed the seventh highest species number followed after Jeju, Gyeonggi, Jeonnam, Incheon, Seoul and Gangwon. On the basis of the results from the country origin analysis, two dominating taxa were introduced from Europe and America, 55 taxa and 51 taxa respectively. The spreading grade of alien plants was elucidated in order of 1 grade (PS) 67 grade (21.1%)>2 grade (MS) 31 taxa (21.1%)>5 grade (WS) 18 taxa (11.6%)>3 grade (CS) 17 taxa (11.6%)>4 grade (SS) 14 taxa (9.5%). Ulsan city is one of a pivotal conduit for the introduction of invasive alien plants. Thereby, reliable management plans are required to monitor these species.

• Journal of Korean Society of Archives and Records Management
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• v.21 no.4
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• pp.163-181
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• 2021

Photographic records capturing the changes of a city are vital parts of local history archives. They were, however, not collected properly for the local history archives even by local governments. Therefore, as a solution for this problem, seven major cities (Seoul, Incheon, Gwangju, Ulsan, Daejeon, Busan, and Daegu) initiated the urban landscape documentation project for archiving the photographic records of each city. This study investigated the current status of the urban landscape documentation project and found that Daegu metropolitan city's project only holds some of the contest photos and a few old photos from the local government. A proper donating process is urgently needed to preserve valuable photographic records of Daegu, and this study aims solutions for the Daegu metropolitan city's urban landscape documentation project to improve the acquisition methods of photographic records. This study suggests the process for photographic records donation from citizens and a metadata set for donated photographs.

• Journal of Convergence for Information Technology
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• v.10 no.6
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• pp.193-199
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• 2020

The aim of this survey has been to investigate the effects of positive psychological capital of students from some universities in Busan and Ulsan on communication skills and interpersonal skills. As a result of the relationship with the main variables, there was a significant positive correlation between sub-factors of positive psychological capital and each ability. Hope(p<0.01) and Resiliency(p<0.05) among the effects of positive psychological capital on communication skills were statistically significant, and, in case of those on interpersonal skills, Resiliency(p<0.001), Efficacy(p<0.05), and Hope(p<0.05) were statistically significant. Therefore, it is necessary to develop and apply an intervention program that can establish the importance of positive psychological capital and strengthen positive psychological capital in order to improve students' communication and interpersonal skills.

• Journal of Convergence for Information Technology
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• v.10 no.7
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• pp.176-184
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• 2020

This study identified personality types of 433 college students of Busan, Ulsan and some regions of Gyeongsangnam-do and inquired into influences of personality types on their satisfaction with clinical practice. According to the results, students with extroverted and low-neurotic tendencies showed significant results in the subordinate factors of satisfaction with clinical practice. As for factors influencing the extraversion factors personality type, it turned out to have a significant level in satisfied with teach (p<0.001), satisfied with facility and satisfied with clinical practice (p<0.05). On the other hand, as for factors influencing the personality type of neurotic tendencies, it turned out to have a significant level in satisfied with practice content (p<0.05), satisfied with teach (p<0.001), satisfied with interpersonal (p<0.05) and satisfied with clinical practice (p<0.05). Therefore, it will be indispensable to conduct a personality type test during the period of university days, to increase satisfaction with clinical practice of students majoring in Dental hygienics. Moreover, based on the test results, it will be required to develop a variety of programs to strengthen a customized counseling program and improve interpersonal skills.

• Journal of Convergence for Information Technology
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• v.10 no.3
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• pp.185-194
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• 2020

This study conducted a survey to investigate the effect of the elderly-related experience on ageism in college students in Busan and Ulsan area. The total score of ageism was lower in the students with the experience in living with the elderly (p<.001), taking elderly-related classes (p<.01), and volunteering for the elderly. The effect of the experience in the elderly on the emotional avoidance was significant in the students with the experience in living with the elderly (p<0.001), volunteering for the elderly(p<0.01), and taking elderly-related classes (p<0.05). The effect on ageism was significant in the students with the experience in living with the elderly (p<0.001), volunteering for the elderly (p<0.01), and taking elderly-related classes (p<0.05). Therefore, taking elderly-related classes and volunteering for elderly to build social, physical, and emotional empathy will have a positive effect on the attitudes and the point of view on the elderly.

• Journal of the Korean Society of Child Welfare
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• no.27
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• pp.95-120
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• 2008

The purpose of this study is to investigate the impact of family resilient factors on the adaption of families with child with chronic disease. The study sample consisted 287 families with chronic illness child. The survey was done from July 1. 2007 to October 31. 2007. It was analysed that the effect of families resilience through structural equation model. Adequate fitness of the model was observed. The family resilience of families with chronic illness child has significantly positive effect on the family adaptation. Family stress had negative effect on family hardiness. Family hardiness had positive effect on family communication, and family communication had positive effect on social support. Social support had positive effect on family adaptation. According to this finding, intervention strategies focusing on in creasing resilient factors were suggested.