• Health Policy and Management
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• v.21 no.2
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• pp.195-212
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• 2011

Objectives: This study investigates the relationship between nurse staffing levels and differences in patient outcomes in terms of average length of stay, in-hospital mortality rate and 30-day death rate in order to evaluate the effectiveness of a policy that differentiates fees for inpatients on the basis of nurse-to-bed ratios. Methods: We obtained information on inpatients from health insurance claims data published by the Health Insurance Review and Assessment Service(HIRA) in 2008, organizational factors(type of hospital, ownership) from the records of the hospital report system in 2008, and nurse staffing levels, which were graded on a scale of 1 to 7, from data compiled between December 15, 2007, and September 20, 2008. The data were segregated according to type of hospital and quarter and finally 3,517 records of 1,182 hospitals were analyzed using multi-level analysis. Results: The average length of stay in grade 1~6 hospitals was lower than that in grade 7 ones, but the difference was much below one day. No significant difference was found among different grades in tertiary hospitals. Further, variations in staffing levels did not result in any significant difference in the in-hospital mortality rate and 30-day death rate. Conclusions: High nurse staffing levels did not result in better patient outcomes compared with low staffing levels. We therefore recommend modifying the above nurse staffing policy so as to make it more effective in improving patient outcomes.

• Clinical and Experimental Reproductive Medicine
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• v.20 no.2
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• pp.117-123
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• 1993

The condition of the endometrium is an important factor which may influence the success or failure in IVF-ET. This study was undertaken for evaluation of the value of endometrial growth as an early predictor for the success of IVF. Ultrasonographic endometrial measurement were performed in 43 IVF cycles that conceived, 101 cycles that did not with an IVF-ET There was no significant difference in the endometrial thickness and the serum concentration of estradiol in the pregnant versus nonpregnant group(10.4 vs. 9.9 mm: 2348 vs. 2017 pg/ml no hCG administration day). No correlation was found between the ultrasound image and serum estradiol levels around the time of hCG administration(r=0.54, p=0.13 no Day 2; r=0.45, p=0.14 no Day 1). The duration of gonadotropin treatment, number of follicles, number of oocytes retrieved, and fertilization rate were not statistically different in the two groups, however, there was a significant difference in the number of embryos in the pregnant versus nonpregnant group)p< 0.05). A higher pregnancy rate and ongoing pregnancy rate occured with an endometrial thickness over 11 mm compared with below 7mm(p< 0.05, p< 0.005). however, no significant differences were noted in the implantation rate and abortion rate among the groups that classified according to their endmetrial thickness. The endometrial growth(${\Delta}$) from hCG administration day(DO) to D6 was greater in the women who achieved pregnancy than in the nonpregnant group(p< 0.01). There were no significant differences in serum estradiol levels, implantation rate, pregnancy rate, and abortion rate among the groups that classified according to the pattern of echogenesity of endometrium, however, significantly higher ongoing pregnancy rate was noted in group A, B compared with group C.(p< 0.0001, p< 0.001) These results suggest that there were no ultrasonographically detectable differences in the patterns of endometrial growth and development around the time of hCG administration in patients who conceive versus those that do not in IVF-ET.

• Ocean and Polar Research
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• v.42 no.2
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• pp.157-169
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• 2020

This study aimed to analyze the effect of total allowable catches (TACs) on the target species. First to effects analyse of TACs, the 8 TAC target species and 75 non-target species were selected for which catch data were available before and after the introduction of the TACs. The 8 target species were simply compared to catch changes before and after TACs. Through the comparison, it was confirmed how the catches of target fishes have changed after the implementation of the TACs. Secondly, the Difference In Differences(DID) analysis was conducted to confirm the effects of the TACs on the catches of the target fishes using the catch data of 8 TAC target species and 75 non-TAC species. Finally, to overcome the limitations of the DID analysis, the random effects model was estimated to confirm the effects of the TACs on the catch of the TAC target species. Overall, this study confirmed that the TACs affects catches of target species, not only through simple comparisons of catches before and after the introduction of the TACs but also through econometric analysis.

• The Korean Journal of Food And Nutrition
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• v.25 no.2
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• pp.383-392
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• 2012

Atopic related skin symptoms must be controlled continually. Because it is involved with food, eating behaviors play an important role in the prevention and management of atopic dermatitis. The aim of this study was to develop and apply nutrition education program for the prevention and management of atopic dermatitis on elementary school students. After applying the nutrition education program, our research attempts to evaluate the effectiveness of such nutrition education program. This study examined the effects of a nutrition education program on atopic dermatitis-related snacking behaviors, eating attitudes, and food behaviors. Subjects were 3rd grade elementary school students in Daejeon. A 6-week nutrition education program was implemented to 97 children as the educated group and another 94 children were included in the study as the control group. A self-administered questionnaire was used to assess the effects of nutrition education program. As results, eating attitudes reached significant improvement by the nutrition education program(p<0.05). In a paired t-test, the control group did not show significant difference, but the educated group showed a significant difference. In snacking behaviors, the two groups did not show statistical difference except for some considering factors. Also, there were no significant differences of the two groups after nutrition education program, except the snacking place after the nutrition education group. However, in the educated group, the types of snacks made by mothers increased 17.5% from 40.2% to 57.7%, and in-house as snacking place increased 13.4% from 68% to 81.4%. In the results of before and after the nutrition education program, the program showed some effect on the prevention and management of atopic dermatitis. Therefore, these results showed foundation for nutritional education and various educational programs are needed afterward to increase the effect of nutrition education in the prevention and management policy related to atopic dermatitis.

• Perspectives in Nursing Science
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• v.10 no.2
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• pp.141-150
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• 2013

Purpose: The purpose of this study was to evaluate the differences between the level of satisfaction and concern regarding appearance according to gender, the importance of appearance in job interviews, and the influence appearance has on job-seeking stress and anxiety under the ever-increasing pressure on students to secure employment so that appropriate psychological interventions can be provided to undergraduates. Methods: The survey was conducted on 170 third and fourth year undergraduates in Gyeonggi province from August 31st to September 6th, 2012 to figure out the correlations and differences in variables of appearance satisfaction and concern, and the importance of appearance in job interviews and job-seeking stress and anxiety according to the differences in gender. Data were analyzed by descriptive statistics, independent t-test, two-way ANOVA, and Pearson's correlation analysis. Results: 1. There was difference between the genders for appearance satisfaction and concern. The level of satisfaction was higher in male students while concerns regarding appearance were higher in female students. There was no gender difference regarding the importance of appearance in job interviews, job-seeking stress, and job-seeking anxiety. 2. For the concerns in appearance, there was a significant difference between the genders in appearance management, and gender and the importance of appearance in job interviews showed significant interactive effects. Stress and anxiety from job-seeking did not show significant differences between the genders, but there were common significant interactive effects between gender and grades, gender and employment, and gender and the importance of appearance in job interviews. 3. Both male and female students showed higher job-seeking stress as their job-seeking anxiety was higher. Job-seeking anxiety was higher in male students who had higher concern in appearance, and in female students who placed more emphasis on the importance of appearance in job interviews. Conclusion: As female students perceived appearance in job interviews as important more than male students, their job-seeking anxiety was higher, while male students who showed higher concern in appearance also showed higher level of anxiety in job-seeking. As job-seeking anxiety was higher, job-seeking stress was also higher according to the entire participants, based on this result, methods to decrease job-seeking anxiety should be suggested.

• The Journal of Korean Association of Computer Education
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• v.19 no.6
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• pp.91-103
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• 2016

In Korea, pre-service teachers' negative attitude toward robots keep them from being applied in schools. To cope with these obstacles, this study examines the change of pre-service teachers' attitude toward robots after adopting robot programming. To prove the program's effect, pre-service teachers were divided into three groups, including each group taking pre-and post-tests. After analyzing the pre-tests, none of the groups showed any difference; however, they did show significant differences in the post-tests. A paired sample t-test was conducted in each group for investigating the change. Those who took ICT and programming education did not show a change. However, those who took robot programming education did show a statistically significant difference.

• Journal of the Korea Fashion and Costume Design Association
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• v.4 no.2
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• pp.47-67
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• 2002

The purpose of this study was to investigate the differences of Middle and High School Students' influential groups in putting on clothing according to their delinquency and demographic variables. My subject was 1050 middle and high school boys and girls who are resident in Seoul; sample groups were selected, considered their resident area, gender and the kind of school. The results are as follows: 1. The exemplary group was most regarded the opinion and evaluation of teacher, father and mother and followed the clothing of teacher. Compared with the exemplary group, the delinquent group was most regarded the opinion and evaluation of other and same sex friend and tended to follow their clothing style. Besides, the delinquent and middle groups were most regarded the opinion and evaluation of seniors and tended to follow their clothing style. The mass media star was most modelled by delinquent group, following by middle and exemplary groups. 2. Schoolgirls were more regarded the opinion and evaluation of same sex friend and senior and were more remarkable to follow the clothing style of their parent, friend, senior or mass media star than schoolboys. The students who did well at school more were regarded the evaluation of father, mother and same sex friend than those who did commonly or poorly. As for the exemplary group, the poorer a student did at school, the more he/she tended to follow the clothing style of mass media star, but on the contrary, as for the delinquent group, all students tended to follow the clothing style of mass media star regardless of their academic record. And there was no significant difference according to social status in important others and model group.

• The Journal of Korean Physical Therapy
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• v.31 no.4
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• pp.248-253
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• 2019

Purpose: To improve pulmonary function and decrease in balance ability with increasing forward head position and vertebral curvature, we applied Figure-8 brace to confirm the immediate effect on vital capacity and balance and to see if it is applicable. Methods: A total of 34 elderly women aged 65 or older and young women in their 20s with FHP were screened to measure vital capacity, measuring the forced expiratory volume in 1 second (FEV1) and forced vital capacity (FVC), and measuring the foot pressure to see the change in balance. For statistical analysis, the difference between pre and post values was compared using pared t-test. Results: As a result of vital capacity measurements, there was no significant difference between FEV1 and FVC for women over 65 years old (p>0.05). Young women in their 20s had no significant difference in FEV1 (p>0.05), and FVC had significant differences (p<0.05). In measuring foot pressure to measure balance, both women aged 65 and above and young women in their 20s had a significant decrease in anterior foot pressure, and a significant increase in posterior foot pressure (p<0.05). Conclusion: The results of this study did not positively affect the vital capacity of elderly women with FHP. However, the significant increase in vital capacity of young women in their 20s suggests that contraction of the abdominal muscle is necessary during forced expiration. Therefore, it is believed that proper application and therapeutic interventions should be combined when applying Figure-8 brace.

• Proceedings of the KSPS conference
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• 2000.07a
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• pp.332-332
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• 2000

The purpose of this study is to investigate the perception and production of English vowels by native speakers of Korean. In perception test, twelve English vowels /${\ae},{\;}a,{\;}{\Game},{\;}e,{\;}{\varepsilon},{\;}i,{\;}I,{\;}a,{\;}o,{\;}u,{\wedge},{\;}{\mho}$/, as in had, hard, hoard, hayed, head, heed, hid, hod, hoed, whod, Hudd, and hood produced by native speakers of English were used as perception test materials and subjects were asked to identify the vowels. Two different groups of subjects participated in the perception test. One consisted of 90 students who were taking an English phonetics course, and the other consisted of 64 who were not. The results showed that the former did better than the latter m identifYing English vowels, and that vowels in 'head' and 'had' were relatively hard to identify, while vowels in 'hayed', 'hard', and unexpectedly, 'heed' and hid' were easy to perceive. In production test, two native English speakers and 4 native Korean speakers served as subjects. The 4 native Korean speakers were divided into two groups as in the perception test, experienced and inexperienced, depending on whether they were taking an English phonetics course or not. Native English speakers generally showed significant differences both in vowel duration and in FI & F2 values between members of the vowel pairs which are of special interest of this study: /i/ vs. /I/, /${\ae}$/ vs. /$\varepsilon$/, and /u/ vs. and /$\mho$/. There was no significant difference between the two Korean groups. Native Korean speakers showed much difference in neither duration nor FI & F2 values except significant durational difference in /i/ vs. /I/ pair.

• Journal of the Korea Safety Management & Science
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• v.15 no.1
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• pp.271-281
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• 2013

In the trend toward globalization, cross-cultural teams in organizations are becoming more and more common. In particular, the influence of China and Western Europe on the global economy is getting increased. With this trend, it is important to understand cross-cultural characteristics for group decision making in managerial environments. This study aims at analyzing cross-cultural differences between China and Western Europe in light of the effect of group discussion in group decision making. An experiment simulating a decision of a car purchase was conducted. A total of 48 subjects (24 Chinese and 24 Western Europeans) assigned in decision groups were asked to judge relative importance ratios of nine factors affecting their purchase decisions using the AHP program developed for the experiment. Three dependent variables (consistency, satisfaction, and consensus) were measured. Chinese were slightly more consistent than Western Europeans in discussion-involved group decision making. In terms of decision satisfaction, Western Europeans were more satisfied with discussion-included decisions than discussion-excluded decisions. Chinese, on the contrary, did not show a significant difference. There was no significant difference between two cultures in decision consensus.