• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2008.04a
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• pp.689-692
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• 2008

Noises from ceiling mounted air-conditioning units were recorded in various actual situations such as offices, classrooms and libraries. Eight specimens of air-conditioners from major domestic and foreign manufacturers' were investigated in this study. A head and torso simulator was located 1.5 m beneath the air-conditioner panel for the measurements and sound pressure levels of the recording sounds were varied from 28 to 55 dBA with 3 dB steps for subjective evaluations. A total of 88 stimuli was randomly presented to subjects using a headphone system in semi-anechoic chamber. Two-categorized (noisiness and amenity) nine-point scale was used as evaluation method. The third scale ('point 3') among the nine-point scale was set as the threshold of allowable level of the air-conditioning sounds in consideration of the real situations. The results indicate that the allowable sound pressure level is around 34 dBA for both noisiness and amenity categories.

• The Journal of Korean Society for Radiation Therapy
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• v.30 no.1_2
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• pp.185-189
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• 2018

Purpose : We evaluated the quality of life satisfaction of patients with radiation therapy while maintaining the set-up line. Materials and Methods : We retrospectively reviewed 60 patients who visited our clinic in January, 2018. The most common complaint was the inconvenience of not being able to wash during treatment (64 %), and a surgical tape was placed on the Set-up Line to help patients wash during the treatment period. A total of 50 patients who underwent surgical tape were evaluated on a 5-point scale (1 point was very unsatisfactory, 2 points were unsatisfactory, 3 points were average, 4 points were satisfied, 5 points were very satisfied). Forty patients out of 50 responded to the first treatment, and 10 patients underwent treatment. Results : In the first survey, 68 % of the patients and 32 % of the males were aged 34 %, 50~60 % and 38 %, respectively. Treatment areas were breast (57 %), chest (13 %), pelvis (10 %). The results of the second questionnaire after applying the surgical tape showed that 25 of the 40 patients and 15 of the male patients were treated. The treatment area was 22 breast and 18 pelvic areas. In the satisfaction of the 5-point scale, 5 to 15 points were satisfied with 1-3 points, and 4-5 points with 35 points (1 point 2 points, 2 points 2 points, 3 point 1 points, 4 point points 17 point points, % And 43 %, respectively. The results of the questionnaire survey of patients who were applied during the treatment showed that 9 out of 10 women and 1 male were treated. The treatment area was 8 breast and 2 pelvic areas. One point was satisfied with one point, and five points with nine points were satisfied with 90 %. Conclusions : The importance of improving the quality of life of patients with cancer is also important. After applying the surgical tape, 88 % of the patients who started the treatment and 90 % of the patients who applied during the treatment were satisfied. Particularly, patients who applied during treatment showed higher satisfaction. If this is not possible for all patients, selective application to patients with discomfort will be helpful in improving the quality of life of cancer patients.

• Korean Journal of Child Studies
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• v.15 no.1
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• pp.109-125
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• 1994

The purpose of this study was to validate the IBQ scale (Infant Behavior Questionnaire; Rothbart, 1981). This study examined the validity, reliability and overall tendency of temperamental traits on the IBQ scale. The subjects were 453 mothers with 3-, 6-, 9-, 12-, 15- and 18-month-old infants (232 boys and 221 girls) living in Seoul and Chongju. The IBQ scale, was composed of 56 items (5-point Likert scales), was administered to mothers, using the interview method. Factor analysis revealed that a 6- factor solution was the best fit for the IBQ scale; positive emotionality, attention persistence, approach or withdrawal, negative emotionality, dis tractability and activity. Cronbach's ${\alpha}$ ranged from .61 to .79 for the subscales and .79 for the total scale. It was concluded that the IBQ scale in general is acceptable for use in Korea.

• Korean Journal of Adult Nursing
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• v.22 no.5
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• pp.509-518
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• 2010

Purpose: The purpose of this study was to examine the state of unmarried cohabitation and to compare the differences of loneliness and family function among university students with cohabitation experience and those with no experience in Korea. Methods: A convenience sample of 213 university students was recruited from three universities located in G city and the Chonnam area of Korea. Data collection methods included: (a) a demographic questionnaire, (b) a questionnaire related to cohabitation, (c) UCLA scale: 20 items on a 4-point scale (c) Family APGAR questionnaire: 5 items on a 3-point scale. SPSS/WIN 17.0 was used for descriptive analysis, ${\chi}^2$ test, t-test, and Pearson correlation. Results: In this study, 21.1% of the subjects had experiences of unmarried cohabitation. The cohabitation experience was related to gender, age, and monthly income. There was significant differences in family function between the two groups. Loneliness scores were significantly correlated with family function scores in the non-cohabitation group. Conclusion: To improve sex life of the university students, healthcare providers including school nurses may consider family function.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.59 no.5
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• pp.897-903
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• 2010

This paper presents a response surface method(RSM) with Latin Hypercube Sampling strategy, which is employed to optimize a magnet pole shape of large scale BLDC motor to minimize the cogging torque. The proposed LHS algorithm consists of the multi-objective Pareto optimization and (1+1) evolution strategy. The algorithm is compared with the uniform sampling point method in view points of computing time and convergence. In order to verify the developed algorithm, a 6 MW BLDC motor is simulated with 4 design parameters (arc length and 3 variables for magnet) and 4 constraints for minimizing of the cogging torque. The optimization procedure has two stages; the fist is to optimize the arc length of the PM and the second is to optimize the magnet pole shape by using the proposed hybrid algorithm. At the 3rd iteration, an optimal point is obtained, and the cogging torque of the optimized shape is converged to about 14% of the initial one. It means that 3 iterations aregood enough to obtain the optimal design parameters in the program.

• Journal of Korean Academy of Nursing Administration
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• v.19 no.5
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• pp.589-598
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• 2013

Purpose: This study was designed to assess the degree of psychological well-being, perceived health status, and health promoting behavior of clinical nurses, and to identify correlations between variables. Methods: Participants were 194 nurses working at S hospital, Seoul and data were analyzed using descriptive statistics, ANOVA, Duncan's test, Pearson correlation coefficient, and multiple regressions. Results: Mean scores were 3.45 (5 point scale) for psychological well-being, 2.82(4 point scale) for perceived health status, and 2.30(4 point scale) for health promoting behavior. Psychological well-being correlated positively with perceived health status (r=.34, p<.001). Perceived health status showed a positive correlation with health promoting behavior (r=.30, p<.001). There was a positive correlation between psychological well-being and health promoting behavior (r=.52, p<.001). Personal growth(t=2.85, p=.005), purpose in life (t=2.30, p=.023) among subscales of psychological well-being, and perceived health status (t=2.13, p=.034) had a significant influence on health promoting behavior. These combinations explained 32.1% of health promoting behavior (F=12.58, p<.001). Conclusion: The results of this study suggest strategies to improve health promoting behavior by enhancing psychological well-being of nurses. Furthermore, a study to identify the effects of developed and applied psychological well-being promotion program should be conducted.

• Journal of Korean Academy of Nursing Administration
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• v.21 no.1
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• pp.10-19
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• 2015

Purpose: This study was designed to assess the degree of Positive psychological capital, Organizational commitment, Customer orientation of clinical nurses, and to identify correlations between these variables. Methods: Participants were 230 nurses working in three hospitals located in Seoul. Data were analyzed using descriptive statistics, t-test, ANOVA, Scheff$\acute{e}$ test, Pearson Correlation, and Multiple Regression. Results: Mean scores were 3.32 (5 point scale) for Positive psychological capital, 3.03 (5 point scale) for Organizational commitment, 3.71 (5 point scale) for Customer orientation. Positive psychological capital correlated positively with Organizational commitment (r=.29, p<.001) and Customer orientation (r=.58, p<.001). Organizational commitment correlated positively with Customer orientation (r=.28, p<.001). Positive psychological capital had a significant influence on Customer orientation. and these combinations explained 34.2% of the variance in Customer orientation (F=25.68, p<.001). Organizational commitment had a mediating effect between Positive psychological capital and Customer orientation. Conclusion: The results of this study suggest a need for strategies to improve Customer orientation by enhancing the Positive psychological capital of nurses. Furthermore, study to develop and apply a Positive psychological capital promotion program should be conducted.

• The Korean Journal of Community Living Science
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• v.26 no.1
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• pp.39-49
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• 2015

This study evaluates nutrition knowledge, dietary behaviors and food group acceptability based on a sample of 514 of new employees in Gyeonggi area. Among the respondents, 70.6% of male, and their age was 30.7 Most were college graduates (94.9%) and unmarried (86.3%). Based on the BMI males tended to be overweight, whereas females, normal. In terms of health consciousness based on five-point Likert-type scale, the average score for the health status was 4.18 indicating good health, and health attention was 4.88 indicating high health attention. Dietary behaviors were evaluated using five-point Likert-type scale. According to the results, the total score for regular diet based on 5 items was 9.6; that for a balanced diet based on 7 items was 22.2; and that for practical diet action based on 8 items was 22.3. That is, the respondents were on an irregular diet but tried to balanced diet through appropriate diet action. Food acceptability was evaluated using a five-point Likert scale ranging from "strongly dislike(1)" to "strongly like(5)". The score of meat group was 3.67; that for the fish 3.43; and that for the vegetable group was 2.86. Females were slightly more like to accept fruits 3.60 than males 3.48;(p<0.05). The total score for nutrition knowledge based on 35 items was 20.5. A balanced diet was correlated with egg acceptability (p<0.01); energy-related knowledge with confectionery preferences (p<0.05); and vitamin knowledge, with snack affinity (p<0.05). Health attention was negatively correlated with seafood preferences for male(p<0.05) and with snacks for females(p<0.05). The respondents were strongly interested in and aware of their health, but this did not lead to their food preferences. These results suggests that dietary habits can lead to nutritional balance for maintaining the health of employees.

• KIEAE Journal
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• v.6 no.4
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• pp.25-32
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• 2006

Mock-up model can be applied to measure accurate performance data but difficult to apply the variables in experiment. There can be a slight experiment errors in Scale model, but various parameters can be applied for a objective experiment. This paper aims to compare the daylighting performance in 1, 1/5, 1/10 scale model of offices and analyze the experiment errors to certificate the influence of model experiment. To analyse daylighting performance, a comparison of a Mock-up model, sized $12.0m(w){\times}7.2m(l){\times}3.7m(h)$, designed for experimentation of daylighting systems and its 1:5, 1:10 scale model. It has an identical configuration of reference room and the test room. For the test room, the lightshelf system was designed as Micro-4 reflective material. To assess work plane illuminance and light factor, photometric sensors of each room were installed at work-plane(6 points) and exterior horizontal illuminance (1 point). And luminance of window, rare of the room was measured under clear sky. It is to be monitored by Agilent data logger, photometric sensor Li-cor and the Radiant Imaging ProMetric 1400. Comparisons with a light factor, increase-decrease ratio and luminance are discussed.

• Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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• 2003.04a
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• pp.321-326
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• 2003

The subjects of this study are to examine and to apply the methods of making 1:5,000 scale maps using 1m resolution stereo images of IKONOS for the Munsan area of Paju-city where aerial photo surveying cannot possible because of security conditions. GCP(Ground Control Point) were acquired from GPS surveying and were to perform geometric corrections on images. Digital Map used IKONOS stereo images and it worked from the digital analytical stereoplotter. From field investigation, RMSE errors of the plane and vertical positions are estimated to 1.706m and 1.231m, respectively. The plane accuracy is better than an accuracy required by NGIS (national GIS) programs. Local information from field investigation was added and the resulting maps should be good as digital map under the scale of 1/5,000.