• The Korean Journal of Emergency Medical Services
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• v.18 no.2
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• pp.45-58
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• 2014

Purpose: This study aimed to investigate the level of knowledge and education regarding basic life support (BLS) among scuba divers. Methods: Data collected from 125 scuba divers in Jeju-do were subjected to frequency, t-test, ANOVA, and Chi-square analyses using the SPSS 18.0 program. Results: 42.1% of the subjects was trained BLS for more than an hour less than 4 hours, and 52.6% of the subjects was trained BLS for less than 3 months in scuba diving institutions. Statistically significant difference was observed in the competence for performing cardiopulmonary resuscitation during BLS education according to gender and age further regarding the necessity of BLS education, significant difference was observed with respect to age, job, academic background, monthly income, and participation period of scuba divers. The divers wished to learn cardiopulmonary resuscitation (72.8%), medical first aid (8.0%), and measures to be taken in cases of trauma (8.0%). The knowledge score for BLS among scuba divers was significantly different depending on the gender, age, marital status and frequency of participation. Conclusion: It is necessary to develop and implement a safety education program for scuba divers.

• Korean Journal of Plant Taxonomy
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• v.40 no.4
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• pp.262-266
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• 2010

A new variety of Elsholtzia splendens (Lamiaceae) was found by the roadside of a mountain base at Jungmun-dong, Seogwipo-si, Jeju-do. The new taxon is termed Elsholtzia splendens var. fasciflora N.S. Lee, M.S. Chung & C.S. Lee, var. nov. The Korean name 'Da-bal-kkot-hyang-yu' was given. The morphological characters and illustrations of the species based on the holotype are provided together with a photograph of the habitat. It is distinctly distinguished from Elsholtzia splendens var. splendens by a few characteristics: leaves that area 2-4 cm long, leaves beneath the inflorescence, typically mostly 4; and inflorescence mosyly 2-4, fascicled, involucres oval.

• Bulletin of the Korean Chemical Society
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• v.34 no.2
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• pp.633-636
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• 2013

• Journal of the Korea Institute of Building Construction
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• v.14 no.5
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• pp.459-465
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• 2014

This study is to suggest specialty contractors with countermeasures to construction orders falling off, one of the construction business indicators for the construction industry, by analyzing the impact of dwindling construction orders to business performance indicators of specialty contractors as well as identifying inter-relationships between those performance indicators. To do this study, a data was analyze for construction business indicators and business performance indicators of specialty contractors providing heavy equipment. For specialty contractors that provide and utilize heavy equipment, the amount of construction orders is imposing a lasting impact to the turnover ratio of current assets. Therefore, it is determined that a business strategy needs to be established in order to secure current assets to respond to decrease in construction orders.

• Journal of fish pathology
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• v.31 no.2
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• pp.123-129
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• 2018

Parvicapsula anisocaudata, a myxosporean parasite, is presumably one of causative agents of emaciation in olive flounder Paralichthys olivaceus in Korea. In this study, we report a case of unusual abdominal distension due to exceptionally enlarged liver in farmed olive flounder. For the identification of the causative agent, bacteria and nucleic acids of virus that are possibly present were attempted to isolate from internal organs of five fish sampled from a fish farm in Jeju. Although a few bacterial colonies were isolated from some samples, there was no evidence that fish were primarily affected by virus and/or bacteria. From histopathological analysis, myxosporean were found in almost all internal organs, particularly in the stomach. The causative agent was identified as P. anisocaudata by sequencing a part of small subunit rRNA. This study contains a very unusual case of olive flounder heavily and systemically infected with P. anisocaudata, showing excessively enlarged liver with a small amount of ascitic fluid.

• Korean Journal of Occupational Health Nursing
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• v.28 no.3
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• pp.125-137
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• 2019

Purpose: The purpose was to investigate the literature on depression among South Korean nurses in order to identify overall trends regarding depression. Methods: Forty-five papers published between 1998 and 2017 in three Korean databases-RISS4U, DBPIA, and KISS-were analyzed. Results: Depression showed significant positive associations with job stress, burnout, intent to leave, and somatic symptoms such as fatigue and trouble sleeping. Poor work environments such as staff shortage, work overload, and shift work were also positively associated with depression. Higher job satisfaction, resilience, self-efficacy, self-esteem, and social support were negatively correlated with and acted as significant buffers against depression. Conclusion: These results indicate that healthcare policymakers must pay more attention to the management and prevention of nurses' depression. In order to effectively do so, poor work conditions, which involve long working hours, high patient-to-nurse ratios, and extreme workloads, should be improved. Simultaneously, nursing managers should implement initiatives such as counseling and competency improvement programs, and stress management to reduce and prevent depression among nurses and strengthen their positive competency. Also, further research is required to clarify the prevalence of depression in South Korean nurses, with more meta-analyses also required to identify variations in depression rates owing to various factors.

• Journal of English Language & Literature
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• v.56 no.5
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• pp.999-1026
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• 2010

There was a Golden Age of Fantasy novels in the United Kingdom in the 19th Century, which had the major writers, Lewis Carroll and George MacDonald. These writers pushed the boundaries of imagination and created a new world in which explore their own selves and societies. Fantasy novels flowered in the 1860s when a group of writers including Carroll and MacDonald published their works. These writers used the trait of dream framing to create their own fantasy world in which they took the action against the complicated and oppressive Victorian reality. Carroll's fantasy worlds of Alice in Wonderland and Through the Looking-Glass were an insane and chaotic world where the certainty of the real world was overturned. MacDonald's dream worlds of At the Back of the North Wind and the Princess books including The Princess and the Goblin and The Princess and Curdie were ideal societies in which imaginative characters could create harmony between fantasy and reality. Fantasy writers engaged in making journey to other lands to do philosophical and moral discussion critiquing Victorian society and to find insights into those problems in their works. Thus, their fantasy journey traverses time and place can produce some suggestive answers to the questions that lie in other times and realities as well as theirs.

• Journal of The Korean Society of Agricultural Engineers
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• v.65 no.6
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• pp.93-103
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• 2023

This study aimed to analyze the impact of water curtain cultivation in the greenhouse complexes on groundwater's electric conductivity and water temperature. The greenhouse complexes are mainly situated along rivers to secure water resources for water curtain cultivation. We classified the groundwater monitoring well into the greenhouse (riverside) and field cultivation areas (plain) to compare the groundwater impact of water curtain cultivation in the greenhouse complex. The groundwater observation network in Miryang, Gyeongsangnam-do, located downstream of the Nakdong River, was selected for the study area. As a result of analyzing the electric conductivity and water temperature, the following differences were found in the observed characteristics by region. 1) The electric conductivity and water temperature of the riverside area, where the permeability is high and close to rivers, showed a constant pattern of annual changes due to the influence of river flow and precipitation. 2) The flat land in general agricultural areas showed general characteristics of bedrock observation in the case of water temperature. Still, it seemed more affected by the surrounding well's water use and water quality. The electric conductivity did not show any particular trend and was influenced by the surrounding environment according to the location of each point.

• Journal of Wind Energy
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• v.13 no.3
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• pp.33-42
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• 2022

In this paper, a semi-supervised machine learning technique applied to actual field vibration data acquired from Jeju-do wind turbines for predictive diagnosis of abnormal conditions of offshore wind turbines is introduced. Semi-supervised machine learning, which combines un-supervised learning with supervised learning, can be used to perform anomaly detection in situations where sufficient fault data cannot be obtained. The signal processing results using the spectrogram of the original signal were shown, and external data were used to overcome the problem that disturbance reactions easily occurred due to the imbalance between the number of normal and abnormal data. Out of distribution (OOD), which uses external data, is a technology that is regarded as abnormal data that is unlikely to occur in reality, but we were able to use it by expanding it. By rearranging the distribution of data in this way, classification can be performed more robustly. Specifically, by observing the trends of the abnormal score and the change in the feature of the representation layer, continuous learning was performed through a mixture of existing and new data.

• Journal of agriculture & life science
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• v.50 no.2
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• pp.107-116
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• 2016

The study was aimed to analyze pedigree structure and inbreeding coefficients for performance tested Holstein cows in Korea. A total of 400,029 Holstein cows data which born between 2002 and 2012 were obtained from Dairy Cattle Improvement Center of National Agricultural Cooperative Federation(NACF). Their related pedigrees, as obtained from Korean Animal Improvement Association(KAIA), consisted of 509,740 animals. Pedigree depth of the cows were traced back to 3 generations earlier. The percentage of cows with fully identified ancestors in various provinces of Korea were 55.18%(Gyeonggi-do), 23.49%(Gangwon-do), 47.83%(Chungcheongnam-do), 53.62%(Chungcheongbuk-do), 56.38%(Gyeongsangbuk-do), 51.35% (Gyeongsangnam-do), 26.58%(Jeollanam-do), 49.41%(Jeollabuk-do), and 56.90%(Jeju-do), whereas, it was about 63.20% as a whole in Korea. The average inbreeding coefficients showed increment across the consecutive years of birth such as, 0.43(2002), 0.44(2003), 0.58(2004), 0.64(2005), 0.78(2006), 0.93(2007), 1.08(2008), 1.23(2009), 1.46(2010), 1.77(2011), and 2.03 (2012). However, this coefficient was 0.93 in overall Korean population. An average generation interval for sire to daughter genetic path was 8.15 years; which was about 4.20 years considering dam to daughter genetic path. The estimated effective population sizes (Ne) were 56.5, 51.3, and 32.2 animals born in 2004, 2009, and 2012, respectively. These results indicated that an increased rate of inbreeding has led to a significant reduction in the Ne over the decade.