• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.20 no.2
• /
• pp.498-508
• /
• 2019

This is a comparative descriptive research conducted to compare work obstacles and safety culture perceptions of elderly welfare facility employees in Korea and Japan. The number of subjects are total 680 including 460 Japanese employees, working at elderly welfare facility in city 'N', and 220 Korean employees in city 'A' and 'S' of province 'K'. This study had been conducted from April 1, 2018 to August 30, 2018 and the data was analyzed by x2-test, t-test, ANOVA. As a result, work obstacles were korea and japan, there were no statistically significant differences between two groups. In the safety culture perceptions, employees of elderly welfare facility in Korea showed significantly higher level of safety culture perception than employees of that in Japan. furthermore, it is revealed in both countries that the less work obstacles they have, the higher safety culture perceptions they get. And it is a work obstacles that affects safety culture perceptions. Lastly, it is expected that the result of this study can be used as basic data for the improvement of working environment and for the strategy development in human resource management to enhance the safety culture perceptions and to reduce work obstacles.

• Korean Journal of Family Social Work
• /
• no.57
• /
• pp.159-182
• /
• 2017

With using the 4th and 5th wave of KLoSA(Korean Longitudinal Study of Aging), this study analyzed the effect of the factors of Rowe and Kahn's successful aging model on the life satisfaction of older adults. The target population of this study was 1,385 who is older than 65. As data analysis, hierarchical multiple regression was used. The variables such as demographics, avoiding diseases and disability, high cognitive and physical function and engagement with life, relationship with adult children were entered hierarchically for the regression analysis. Since there are differences of longevity by gender, the difference of factors of successful aging were compared by marital status. In this study (besides Rowe and Kahn's successful aging model such as avoiding disease and disability, high cognitive and physical function, and engagement with life), the relationships with adult children were analyzed additionally. Findings show that married older adults were older and reside with their adult children twice more than those who do not have a spouse. According to research results, regular exercise and memory skills were important factors of affecting life satisfaction. Among the categories of active engagement, meeting with friends, relatives and neighbors were significant. Contact with their adult children by mail or phone were the most important factors affecting the older adults' life satisfaction. The three parts of successful aging were various depending on the operationalization of variables.

• Journal of the Korean Society of Urban Environment
• /
• v.18 no.4
• /
• pp.511-521
• /
• 2018

Despite the limitations and difficulty in the application of CALINE3 model for air dispersion prediction of roads and tunnels construction businesses in South Korea, the model is being used in all roads construction projects. This study compared the predicted values of CALINE3 and AERMOD model that is suggested by the US EPA, to the values of GRAL model, a Lagrangian particle tracking model developed in Europe, by applying the models to the existing roads of the urban areas. The result showed low relevance to the actual measurement value in the case of CALINE3 model, thus displaying a low trusted value when applying to the urban areas. In the case of using AERMOD model, the predicted values were overly expressed compared to the actual measurement value, thus leading to the need of adding a No2 conversion method to the model in the future. In the case of GRAL model, a Lagrangian particle tracking model, the relevance between the actual and predicted values were high as the model considers the surrounding topography and the buildings all together, thus confirming that the model can be used for air dispersion prediction of the roads in the urban areas. Lastly, the result of this study testing the air prediction models in Jeongneung Measuring Station points that it is necessary for the future studies to expand the testing areas and test the validity of the models continuously.

• Journal of Applied Biological Chemistry
• /
• v.61 no.4
• /
• pp.405-410
• /
• 2018

Pseudomonas tolaasii strain No. 6264 has been isolated from mushroom tissue and identified as one of the major pathogen causing brown blotch disease. It secretes peptide toxins, known as tolaasin and its analogue peptides. P. tolaasii 6264 has been used as a typical pathogenic strain to study the brown blotch disease for last 20 years after confirming its blotch-forming ability, hemolytic activity, and white line formation. In this study, the characteristics of P. tolaasii 6264 strain were analyzed and compared according to storage period. Strains of P. tolaasii 6264 stored annually since 2012 were cultured and their pathogenic characters were analyzed. When the 16S rRNA sequences were compared, all strains were divided into two groups. Pathogenic characters including hemolytic activity, blotch-forming ability, and white line test were also investigated. The strains, P. tolaasii 6264-15-2 and P. tolaasii 6264-17, had all three activities; however, the rest of stored strains showed only blotch-forming ability losing other pathogenic characters. Tolaasin peptides were purified from the bacterial cultures and analyzed by mass spectrometry. The strains, P. tolaasii 6264-15-2 and P. tolaasii 6264-17, secreted Tol I (1987 Da), Tol II (1943 Da), and its analogues (1973 Da, 2005 Da) while some of these peptides were not found in the media cultured other strains. These results indicate that the pathogenicity of P. tolaasii could be varied during the storage period.

• Journal of Life Science
• /
• v.28 no.12
• /
• pp.1455-1460
• /
• 2018

Due to a rapidly expanding aging population, the incidence of degenerative bone disease has increased, and efforts to handle the issue using regenerative medicine have become more important. In order to control various bone diseases such as osteoarthritis and osteoporosis, regenerative medicine utilizing adult stem cells has been extensively studied. And it is now clear that the mitochondrial energy metabolism, oxidative phosphorylation, is important for the process of stem cell differentiation. Interestingly, a recent study reported that salicylate promotes mitochondrial biogenesis by regulating the expression of $PGC-1{\alpha}$ in murine cells. However, the possible effects of salicylate on osteogenic differentiation through increased mitochondrial biogenesis in stem cells remain unknown. Thus, here we investigated whether salicylate could influence osteogenic differentiation and mitochondrial biogenesis of periosteum-derived mesenchymal stem cells (POMSCs). We found that salicylate treatments of POMSCs undergoing osteogenic differentiation increased the activity of alkaline phosphatase, a well-known early marker of bone cell differentiation. In addition, we observed that mitochondrial mass was increased by salicylate treatments in POMSCs. Together, these results indicate that salicylate can enhance osteogenic differentiation and mitochondrial biogenesis in POMSCs. Therefore, the findings in this study suggest that small molecules augmenting mitochondrial function such as salicylate can be a novel modulator for osteogenic differentiation and regenerative medicine.

• Korean Journal of Child Education & Care
• /
• v.18 no.4
• /
• pp.91-108
• /
• 2018

Objective: The main purpose of this study was to investigate the change of mother-child interaction and perceptions of parenting and play after participating in parent counseling education program which is combined physical contact play activities with client-centered counseling technique. Methods: The subjects were 6 mothers and their child who attended more than 7 out of 8 times in the program, which carried out totally 8 sessions, once a week for 90 minutes. Marschak Interaction Method (MIM) and semi-structured questionnaire about parenting and play were used to assess the change. Results: First, mothers' interaction with their child was become more nurturable and mutual engaged, and facilitated their child's challenge simultaneously providing structure. Second, child-directed interaction was increased rather than mother-directed, and the waiting time for their child's attempt became longer. Conclusion/Implications: The parent counseling education program changed the mother-child interaction more positively. This study has the implication in terms of combining play with education and counseling, but there is the limitation of generalization due to qualitative analysis based on limited cases.

• Korean Journal of Organic Agriculture
• /
• v.27 no.1
• /
• pp.77-86
• /
• 2019

This study was carried out to investigate the effect of legume cover crop culture on earthworm fauna in organic farmland. We compared sod culture with two kinds of legume crops of hairy vetch and crimson clover on organic citrus orchard to natural sod culture and conventional orchards in Jeju Island. We analyzed the soil characteristics and investigated the density of earthworms from the orchards. Organic matter content did not show much difference in soil analysis between organic and conventional orchard. But the biomass of earthworms in organic orchards is 3.8 times to 7.0 times higher than that in conventional cultivated orchards, and individuals of earthworms on organic orchards were 2.3~18 times higher than conventional orchards. The biomass of earthworms on hairy vetch and crimson clover cultivation was 44.8 g, 47.2 g in 2016, and 78.7 g, 31.8 g in 2017, respectively, which were higher than 32.8 g and 9.5 g of those on natural sod cultivation. Through this study, we found that hairy vetch and crimson clover cultivation improve the earthworm occurrence density in the soil on organic citrus orchard.

• Korean Journal of Child Education & Care
• /
• v.18 no.4
• /
• pp.175-185
• /
• 2018

Objective: The purpose of this study is to investigate the influence of teachers' demographic and sociological characteristics and the emotional support of the director and co-worker on the childcare efficacy of infant teachers. Methods: In this study, 169 Infant teachers of childcare centers have participated, where are located in Seoul and Gyeonggi-do Areas. The data was analyzed by using t-test and one way ANOVA to confirm the differences among groups, and also correlations analysis and multiple regression analysis were performed to analyze the interrelationship between variables and their effects. Results: Study outcome according to study subjects is as follows. First, we found a statistically meaningful difference in marital status and career by the differences of childcare efficacy depending on demographic and sociological characteristics of infant teachers. Second, childcare efficacy of infant teachers showed the most evident correlationship with co-workers support followed by the director's support. Third, the data also revealed that childcare efficacy of infant teachers was influenced by co-workers' support, their careers, marital status and their directors' support in order. Conclusion/Implications: In conclusion, higher levels of childcare efficacy were shown by the experienced and married early childhood teachers and the emotional support of co-workers has the greatest influence on their childcare efficacy.

• Journal of Digital Convergence
• /
• v.17 no.2
• /
• pp.243-254
• /
• 2019

The purpose of this study was to investigate the effect of helplessness, depression, subjective health status, family support, and social support on health promoting behaviors of elderly people over 65 years old. The subjects of this study were 3 welfare centers in G city and C city, 3 senior citizen center and 225 elderly people in 2 geriatric hospital, and this study was analyzed with descriptive statistics, reliability, correlation, confirmatory factor analysis, fitness test, total effect, direct effect, and indirect effect. The direct effects of variables affecting health promoting behaviors were social support, depression, family support, subjective health status, and helplessness. These variables accounted for 66% of health promoting behaviors. Depression, helplessness had a significant indirect effect on family support and social support, and subjective health status had a significant indirect effect on social support, but didn't have a significant indirect effect on family support. In this paper, we propose a new approach to elderly's health promoting behaviors and it is recommended that an intervention program be developed and applied to on personal situation should be necessary for elder's depression, helplessness and subjective health status.

• Economic and Environmental Geology
• /
• v.52 no.1
• /
• pp.91-106
• /
• 2019

The Donghachong tomb from Royal Tombs at Neungsanri is composed of 15 sides including the floor, and the most highly proportion of rock, two-mica granite, are used on the 7 sides (46.6%). Also, augen gneiss consist with another 3 sides (20.0%), and each of the remaining 3 sides (6.7%) are made up of granodiorite, gneissous granite and leucocratic granite, all of which were used to comprise the tabural stone. Meanwhile, the two floors of the burial chamber and the front chamber, are made up of brick-shaped amphibole schist (13.3%). These rocks are occurred in the Buyeo area and their provenance sites are located at the side of Guemgang river. The Memorial Stone for Liu Renyuen in Tang China is a typical augen gneiss showing distinct schistosity and augen texture. This rock has the same petrographic characteristics with the rocks used to build the Donghachong tomb, Sanjikri dolmens and Setapri pagoda in Buyeo. This augen gneiss is distributed from the Jeungsanri in Buyeo to Dukjiri in Gongju as a large scaled rock body, and where currently are the quarries to produce stone aggregates, garden and landscape rocks. Thus, it is highly probable that the site around Buyeo was the source area of augen gneisses since the Bronze Age. However, while augen gneiss is easier to form into shapes it should have disadvantages when it comes to painting on the tomb wall because of their petrographic characteristics of low strength and dark color. Therefore, it is very intriguing to investigate which transportation method the people of Baekje chose with consideration of the distance and terrain, efficiency and convenience.