• Journal of the Korean Vacuum Society
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• v.22 no.2
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• pp.92-97
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• 2013

The luminescence properties of InAs/GaAs quantum dots (QDs) grown by a migration enhanced epitaxy method have been investigated by using photoluminescence (PL) and time-resolved PL measurements. The MEE method supplies materials in a series of alternate depositions with migration enhancing time between each deposition. After In source was supplied for 9.3 s, the growth was interrupted for 5 s. Subsequently, As source was open for 3 (AT3), 4(AT4), 6 (AT6), or 9 s (AT9), and the growth was interrupted for 5 s again. This growth sequence was repeated 3 times for the growth of InAs QDs. The PL peak of the AT3 was 1,140 nm and the PL intensity was very weak compared with that of the other three samples. The PL peak of all samples except the AT3 sample was 1,118 nm, which is blueshifted from 1,140 nm, and the PL intensity was increased compared to that of the AT3. These results can be explained by the increased QD density and the improved QD uniformity. The AT6 sample showed the strongest PL intensity and the narrowest full width at half maximum. The PL decay time of AT6 increased with increasing emission wavelength from 940 to 1,126 nm, reaching a maximum decay time of 1.09 ns at 1,126 nm, and then decreased as the emission wavelength was increased further.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.6
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• pp.563-573
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• 2020

This study aimed to provide basic data to assist in developing programs to improve the quality of life after identifying the factors affecting aging anxiety among middle-aged women. The subjects were 256 middle-aged women in Korea. Data were collected from March 8 to April 11, 2019, and analyzed using descriptive statistics, independent t-test, One-way ANOVA, Pearson correlation, and stepwise multiple regression with SPSS/WIN 18.0. This study found that the aging anxiety of the subjects differed significantly according to job and marriage satisfaction. Aging anxiety had a negative correlation with health perceived health (r=-.300, p<.001), resilience (r=-.537, p<.001), satisfaction of married life (r=-.316, p<.001), and self-esteem (r=-.424, p<.000). The factors affecting aging anxiety were as follows: resilience (β=-.47, p<.001), occupation (β=-.19, p=.003), and self-esteem (β=-.19, p=.014) with 36.9% explanatory power (F=14.34, p<.001). To reduce the aging anxiety of middle-aged people, programs will be needed to improve participation in post-middle-aged jobs or social activities and resilience, self-esteem, thereby providing education and mediation that can allow middle-aged women to accept aging positively.

• Journal of Digital Convergence
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• v.12 no.11
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• pp.461-468
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• 2014

This study was to figure out the influence of oral health behavior and periodontal status on their OHIP-14. Explained to 255 people who visited the scaling center of Dental Hygienics of a college in Gyeongbuk from March 7th to June 13th 2014 and it was agreed to perform. Result of dental plaque and calculus rate of those with no TBI were high; the less frequent do they teeth brushing the higher were their rate of dental plaque, bleeding and calculus, while their OHIP-14 was low. The rate of calculus of whom with no education on dental floss use and who do not use dental flosswas high. The more powerful for those with higher rate of dental plaque; while the lower was the rate of calculus the higher was OHIP-14. Therefore, the more do they brush their teeth and the lower are the rate of their calculus, the more positively has it been figured out to influence on the quality of their life of oral health. Consequently, public health program should be developed to educate them on the necessity of scaing on a regular basis and the cause calculus of occurrence, as well as a media through which they can easily participate in the program.

• Journal of Digital Convergence
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• v.15 no.7
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• pp.407-414
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• 2017

In order to identify an Convergence aerobic exercise's influence on obese female college students' Cardiorespiratory systems and arterial pulse wave Velocity, this study targeted female college students in D University in Y-gu, D-City, and selected total 26 ones having body fat percentage over 30% with no special disease in past and at present and no regular physical activity. After finally confirming their participation in this experiment by completely explaining the purpose of and contents of this experiment and getting the subjects' written contents to participate in the experiment, the investigator randomly arranged the subjects into the exercise group(N=13) and the control group(N=13) and conducted a 12-week aerobic exercise program to the exercise group this study got the following conclusion. First, concerning the body composition's change, the exercise group showed significant reduction in the weight, the body fat percentage, and the abdominal fat percentage. Second, for the respiratory & cardiovascular systems'change, the exercise group showed significant increase in the maximal oxygen uptake, the maximal heart rate, and the maximal breathing capacity. Third, for the arterial pulse wave Velocity's change, the exercise group showed significant reduction in the upper body(right and left hands) and lower body (right and left feet).

• The Journal of the Convergence on Culture Technology
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• v.4 no.1
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• pp.57-65
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• 2018

The purpose of this study was to investigate the factors affecting the actual condition and effectiveness of orthodontic treatment among some dental hygienists and students. This study was carried out from September to December, 2016 to describe the purpose of the study and the method of writing the questionnaire for some dental hygienists and students. The final 430 sections were analyzed and analyzed using PASW Statistics 18.0. First, the duration of orthodontic treatment was 34.4% for college students, 36.9% for orthodontic treatment for less than 2 ~ 3 years, and 62.3% for internal motivation. The factors affecting the orthodontic treatment effect were the patient's cooperativeness and the hospital's scale was the lowest. The higher the grade level, the more the clinical experience and dental part-time experience were, the higher the correlation between dental specialty and dental hygienist's medical service, education and counseling was .521(P<0.001). The higher the level of cooperation, the higher the grade level, the more dental treatment and orthodontic treatment experience, the lower the level of family co - operation. Therefore, it is important to emphasize the importance of cooperation of orthodontic patients and to develop a strategic program for each individual patient.

• Journal of Convergence for Information Technology
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• v.7 no.4
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• pp.45-51
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• 2017

The purpose of this study is to find the level of drug dose calculations and confidence of nursing students who completed fundamental nursing. After receiving informed consent, questionnaires and drug dose calculation paper of 152 subjects were collected. The data were analyzed using SPSS 19.0. The $mean{\pm}SD$ of drug dose calculations was $7.46{\pm}1.97$ on a scale of 10, the mean score of male students was higher than female's(t=3.64, p=.001), and the mean score of science was higher than vocational's according to high school departments(F=5.11, p=.007). In the score of confidence, the $mean{\pm}SD$ was $4.12{\pm}1.12$ on a scale of 6, the mean score of male students was higher than female's(t=8.94, p=.001), and the science was higher than humanity or vocational(F=6.28, p=.002). There was a positive correlation between drug dose calculation and confidence scores(r= .32, p=.001), and explanation rate of confidence on drug dose calculation was 10.2%(p=0.001) in regression analysis. This suggests that nursing students need to improve drug dose calculation ability by strengthening confidence.

• Journal of Life Science
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• v.21 no.9
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• pp.1336-1345
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• 2011

The purpose of this study was to analyze and compare the effects of exercise science of shoes for Aged' health promotion. Kinematic and kinetic data were collected using cinematography and the Zebris system (Zebris Emed Sensor Platform, GR-DVL9800) to analyze pressure of foot and ground reaction force. Subjects recruited were 20 healthy elderly men. They walked at 1.36m/sec velocity wearing type A (domestic), type B (foreign) and walking shoes (A company). One-way ANOVA was used to analyze statistics. The results were as following: no significant differences were observed in gait variables among the three groups (p<0.05). There was a significant difference in max pronation angle of heels examined among the three groups (p<0.05). There were no significant differences in kinetic variables (ground reaction force and max pressure) among the three groups (p<0.05). A physiology study was performed to analyze the effects of walking with shoes with silver added to them on percent body fat, resting metabolic rate and energy expenditure. Sixty adults males were recruited from the public health center. They were divided into four groups. C: control group (n=20), EY: elderly Y group (n=20), and EO: elderly O group (n=20). The results of this study were as follows: percent body fat was decreased following each exercise period, however, not all the groups showed a significant difference. The change of resting metabolic rate was significantly increased in HI (high intensity) and LI (low intensity) periods in the C and EY groups. However, there was no significant difference in the EO group. The mean energy expenditure during and after exercise were significantly lowered in all periods compared to the control group.

• Korean Journal of Health Education and Promotion
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• v.26 no.5
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• pp.41-55
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• 2009

Objective: This study explores the level of knowledge and attitude towards HIV/AIDS and the relationship between knowledge and attitude among social workers and nurses working in the public sector in Gwangju, S. Korea. Methods: The sample was composed of 121 nurse and 124 social workers. For the purpose of this research participants completed a questionnaire designed to assess their knowledge and attitudes about HIV/AIDS. The data was collected between December 2008 and January 2009. All data was analyzed using SPSS WIN version 12.0 for technical statistics. t-Test, ANOVA and multiple regression analysis was employed. Results: First, the result of this research showed that the level of participants knowledge on HIV/AIDS was 85.9%. The nurses score was significantly higher than social workers on knowledge. Second, the outcome also showed that nurses generally had a more positive attitude about HIV/AIDS patients than social workers but it was not significant. Third, participant's attitudes towards HIV/AIDS was significantly influenced by the level of knowledge and previous education about HIV/AIDS. Fourth, the results also showed that knowledge on HIV/AIDS is the most important influencing factor towards the participants attitude. Conclusion: This result has important implications for future education programs designed for health care professionals including nurses and social workers. Given the importances of the role of public officers as practitioners and policy makers on HIV/AIDS, the education program should not only focus on lectures but also include a sharing of practical experience and knowledge.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.10
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• pp.68-75
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• 2019

This descriptive research study identified the factors affecting the nursing process confidence of nursing students. The study's data was collected from June 13th 2017 to June 30th, 2017. Informed consent was received from 129 students who were in their second year of nursing college. The collected data was analyzed using SPSS WIN 18.0 program. The score for self-directed learning ability was 3.45, the score for a critical thinking disposition was 3.55, and the score for nursing process confidence was 3.68. There was significant positive correlation between nursing process confidence and self-directed learning ability (r=.572, p<.001) and critical thinking disposition (r=.488, p<.001). The factor affecting the confidence in the nursing process was self-directed learning ability(32.2%). Educational methods based on building the self-directed learning ability are needed to enhance the nursing process. There are limitations in discussing the results of this study due to the lack of prior research. Further study is needed to confirm the results of this research and the relationships it revealed.

• 재활복지
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• v.20 no.3
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• pp.105-124
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• 2016

The This study aims to verify the causal relationship among physically disability persons participation in exercise, heart rate variance, and facial expression recognition. To achieve such research goal, this study targeted 139 physically disability persons and as for sampling, purposive sampling method was applied. After visiting a sporting stadium and club facilities that sporting events were held and explaining the purpose of the research in detail, only with those who agreed to participate in the research, their heart rate variance and facial emotion awareness were measured. With the results of measurement, mean value, standard deviation, correlation analysis, and structural equating model were analyzed, and the results are as follows. The quantity of exercise positively affected sympathetic activity and parasympathetic activity of autonomic nervous system. Exercise history of physically disability persons was found to have a positive influence on LF/HF, and it had a negative influence on parasympathetic activity. Sympathetic activity of physically disability persons turned out to have a positive effect on the recognition of the emotion, happiness, while the quantity of exercise had a negative influence on the recognition of the emotion, sadness. These findings were discussed and how those mechanisms that are relevant to the autonomic nervous system, facial expression recognition of physical disability persons.