• Journal of Digital Convergence
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• v.11 no.9
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• pp.247-254
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• 2013

This study was to investigate the effects of pain control and improvement function to far infrared ray of carbon surface heating element applied on elderly women with knee osteoarthritis. The subjects for this study were forty-five subjects with osteoarthritis, who were divided convenice sampling into 3 groups, control(15 female, no intervention), ceramic far infrared ray(15 female, applied ceramic far infrared rays) and carbon surface-heating(15 female, applied carbon surface-heating) after treatment measuring VAS, PPT and K-WOMAC. These results represent decreased pain and improved function by applied carbon surface heating element and ceramic far infrared ray on osteoarthritis knee. Therefore, carbon surface heating element will be a good treatment for osteoarthritis.

• Journal of Digital Convergence
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• v.15 no.7
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• pp.343-350
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• 2017

Music Braille is essential and academic materials for the blind to learn and enjoy music. In Korea, National Library for the Disabled is the public institution for the manufacture digital music braille by the request and the center of music rehabilitation the disabled also make the digital music braille on a welfare level. However, most of braille libraries in Korea do have little music braille compared to other braille books. This paper reports the current situations how braille libraries including National library for the Disabled contain braille books, music brailles and digital music brailles to find out that the blinds can be provided exact informations about music brailles and digital music brailles so they can learn music with the right materials such as music brailles. In conclusion, the construction of Database for the digital music brailles is required and necessary for the blind to have better activities of music from the welfare and artistic point of view.

• Journal of the Korean Society of Safety
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• v.20 no.4 s.72
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• pp.14-19
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• 2005

One area in which composites have been used rather extensively is for fabricating pressure vessel. These structures can be readily manufactured by filament winding, which is, as far as composite fabrication techniques are concerned, a relatively inexpensive method for producing composite structures. Unfortunately, the higher strength material and fabrication costs are not the only disadvantages of fiber-reinforced polymer composites when they are compared to metals. Additionally, these materials tend to exhibit brittle behavior. This is of particular concern when they are subjected to a low-velocity impact during routine handling a significant amount of structural damage can be introduced into the composites. The goals of this paper are to understand the impact damage behavior and identify the effect of surface coating materials on impact resistance in filament wound composite pressure vessels. For these, a series of low velocity impact tests was performed on specimens cutting from the full scale pressure vessel by the instrumented impact testing machine. The specimens are classified into two types with and without surface protective material. The visualization for impact damage is made by metallurgical microscope. Based on the impact force history and damage, the resistance parameters were employed and its validity in identifying the damage resistance of pressure vessel was reviewed. As the results, the impact resistance of the filament wound composites and its dependency on the protective material were evaluated quantitatively.

• Journal of Digital Convergence
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• v.17 no.3
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• pp.361-369
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• 2019

The purpose of this study was to investigate the adaptation factor to North Korean refugees by identifying the relationship between character strengths affecting adaptation process and psychological well-being(PWB) in South Korea. The study examined the relationship between PWB and character strength of 117 participants and identified the sub-factors of character strength that affect the settlement period in South Korea. The data were analyzed by using the Model 1 of Process Macro and SPSS 22. The results of this study showed a correlation between PWB and sub-factors of character strength such as wisdom, humanity, courage, justice, temperance, and spirituality. The main effect was to investigate the relationship between PWB and sub-factors of character strength by independent variables. The level of PWB increased with the level of sub-factors of character strength. The moderate effect was showed in the courage of the settling period in relation to PWB. Finally, Limitations and implications of this study was discussed.

• Journal of Digital Convergence
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• v.19 no.4
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• pp.305-317
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• 2021

By examining the experience of residential child care staffs, this study explored the multifaceted aspects of inclusive care and discussed the direction of successful inclusive education implementation in residential child care facilities. Interviews were conducted with 10 care staffs experienced inclusive education at residential child care facilities, and qualitative case study method was used to analyze transcribing data. Care staffs were reluctant to carry out inclusive education. They felt guilty due to not enough care either for disabled or non-disabled children in the process of adapting to inclusive education. They were calling for immediate communication channels to get the necessary support on time. They also recognized needs for professional education for care staffs regarding care of disabled children, and to dispatch special education teachers. It was found that all participants in the study disagreed on three-shift policy. Lastly, the support measures according to the multifaceted aspects of inclusive care in residential child care facilities were discussed.

• Journal of Digital Convergence
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• v.19 no.2
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• pp.289-297
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• 2021

The purpose of this study is to investigate the effect of emotional Labor and positive psychological capital on burnout in general hospital nurses. Participants were 157 nurses working at F General Hospital in C City, Gyeongsangnam Province and data were collected from February 8 to 22, 2019. Data were analyzed by t-test, one-way ANOVA, Pearson's correlation, multiple regression analysis using SPSS Win 23.0. Burnout was positively correlated with emotional labor (r=.531, p<.001), whereas a negative correlation was observed with positive psychological capital (r=-.391, p<.001). Factors influencing burnout included emotional labor (β=.47, p<.001), positive psychological capital (β=-.28, p<.001), with 34.9% explanatory power (F=42.78, p<.001). This result may be useful in developing new strategies for reducing burnout. Further research is needed to identify other factors affecting the burnout of general hospital nurses.

• Journal of Digital Convergence
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• v.20 no.2
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• pp.553-561
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• 2022

The purpose of this study is to understand the relationship between anxiety, sleep disturbance, and suicide ideation in the elderly using senior welfare centers and to identify factors influencing suicide ideation. Data were collected from January 6 to February 7, 2020 from 206 elders who analyzed using SPSS/Win 25.0 with descriptive statistics, t-test, ANOVA, Pearson's correlation coefficients, multiple regression analysis. anxiety, sleep disturbance, suicide ideation were positively correlated. Meanwhile, factor affecting suicide ideation were anxiety(β=.215, p=.001), sleep disturbance(β=.383, p<.001) and the explanatory power of suicide ideation was 27.3%. Therefore, in order to prevent suicide ideation, it will be necessary to develop an intervention program to maintain qualitative sleep and lower anxiety levels.

• Korean Journal of Environmental Agriculture
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• v.32 no.4
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• pp.338-342
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• 2013

BACKGROUND: Two Field tests were conducted at Buan and Yangpyung in 2012 and 2013 to confirm controlling effect of mulberry popcorn disease and mulberry Sucker pests which are becoming serious in mass cultivation area of eco-friendly farming mulberry. METHODS AND RESULTS: As the treatments, 4 Natural products and 3 microbials were applied and 4 mulching materials were used. On the prevent effect of mulberry popcorn disease(Sclerotinia shiraiana) by using mulching materials, nonwoven fabric mulching showed worse effect than non-mulched treatment plot. Moreover, rice straw mulching showed significantly worse effect compare to nonwoven fabric and herb mulching treatments. Natural plant extracts and microbials showed 40~65% control value in 2013, which is little bit worse than 2012 results. On the control effect of mulberry Sucker(Amomoneura mori), organic products which combined with neem, sophora and derris showed excellent result as similar control level of Thiophanate-methyl. It means the chemical products can be replaced with organic product. CONCLUSION(S): According to the 2 years studied results, integrate eco-friendly farming measures are recommended for control of mulberry popcorn disease, because any single method is seemed not sufficient enough. However, natural plant extracts mixture is recommended as a product to control of mulberry Sucker.

• Korean Journal of Materials Research
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• v.2 no.1
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• pp.65-75
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• 1992

0.4wt%C steel added with V and/or Nb were forged and followed by air cooling. The structure-property relationships were examined and multiple regression analysis was conducted to quantify the magnitudes of effects of microalloying elements on the properties of the steels. All material's tensile strength are greater than $70kg/\textrm{mm}^2$, so they are equal to or superior to Q/T material's(S45C). Their impact energies are less than 40J, so they are 50% of Q/T material's. Increasing the content of V from 0.10 to 0.15 wt% had brought improvement in UTS about 20% but with some sacrifice of impact energy. These were the results from the precipitation strengthening by fine dispersion of VC in ferrite, increment of pearlite volume fraction and decrement of pearlite interlamellar spacings. However, increasing the content of Nb from 0.05 to 0.l0wt % slightly improved UTS and impact energy. NbC precipitates were more effective in suppression of austenite grain coarsening than VC precipitates. Combined additions of V+Nb were more effective to bring impact toughness than sole addition. Optimum combination of strength and toughness was accomplished wish 0.4C-1. 19Mn-0.05S-0.12V-0.07Nb steel.

• Economic and Environmental Geology
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• v.36 no.5
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• pp.349-356
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• 2003

As industrial activities are growing, pollutants found in the contaminated land are getting diverse. Some contaminated areas are subject to mixed wastes containing both organic and inorganic wastes such as hydrocarbon and heavy metals. This study concerns with the influence of the degradation of organic pollutants on the coexisting heavy metals, expecially for As. As mainly exists as two different oxidation state; As(III) and As(V) and the conversion between the two chemical forms may be induced by organic degradation in the soil contaminated by mixed wastes. We operated microcosm in an anaerobic chamber for 60 days, using sandy loam. The soils in the microcosm are artificially contaminated both by tetradecane and As, with different combination of As(III) and As(V); As(III):As(V) 1:1, As(III) only and As(V) only. Although not systematic, ratio of As(III)/As(Total) increase slightly at the later stage of experiment. Considering complicated geochemical reactions involving oxidation/reduction of organic materials, Mn/Fe oxides and As, the findings in the study seem to indicate the degradation of the organics is connected with the As speciation. That is to say, the As(V) can be reduced to As(III) either by direct or indirect influence induced by the organic degradation. Although Fe and Mn are good oxidising agent for the oxidation of As(III) to As(V), organic degradation may have suppressed reductive dissolution of the Fe and Mn oxides, causing the organic pollutants to retard the oxidation of As(III) to As(V) until the organic degradation ceases. The possible influence of organic degradation on the As speciation implies that the As in mixed wastes may be have elevated toxicity and mobility by partial conversion from As(V) to As(III).