• Journal of Embryo Transfer
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• v.21 no.4
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• pp.273-280
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• 2006

MC4R, PRKAG3, FABP3, and ESR have reported as important candidate genes related to some economic traits in pigs. To investigate the association between these genes and economic traits, the analysis of restriction fragment length polymorphism (RFLP) was conducted on 147 individuals (96 Durocs and 86 Korea native pigs; KNP) using single nucleotide polymorphism (SNP). Different genotype frequencies of 4 candidate genes were observed in Duroc and KNP. There were significant associations between MC4R polymorphic site and average daily gain (ADG, p<0.05) and backfat thickness (BF, p<0.05) in the Duroc, ADG (p<0.05) and days to 70 kg (p<0.05) in KNP. PRXAG3 polymorphic site were significantly .elated to BF (p<0.05) in the Duroc, ADG (p<0.05) and days to 70 kg (p<0.05) in the KNP. In FABP3, association with BF (p<0.05) in the Duroc, ADG (p<0.05) and days to 70 kg (p<0.05) in the KNP were found. ESR polymorphic site was not significantly associated to any other traits.

• Journal of Embryo Transfer
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• v.22 no.2
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• pp.115-119
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• 2007

This study was carried out to investigate the effects of hormones (progesterone, and combination of progesterone and estradiol) on the reproductive performance of dairy cattle. The intravaginal CIDR was inserted in the vagina of cow on day 14 post-insemination to stimulate progesterone secretion with and without estradiol. The CIDR was removed on the day of next expected estrus. The cows for control group were not treated with CIDR or hormones. Conception rate, estrus interval, estrus intensity and serum progesterone were measured. Conception rates in control, CIDR without estradiol and CIDR treated cows were 15.4, 38.9 and 60%, respectively. Estrus interval in cows treated with CIDR was 26.5 days compared with 37.1 and 48.5 days in control and CIDR without estradiol treated cows. Estrus signs were more intense in cows treated with CIDR compared with control and CIDR without estradiol treated cows. Pregnant cows treated with CIDR showed higher serum progesterone concentration than pregnant and non-pregnant cows in control group. Particularly, serum progesterone was significantly higher in CIDR treated pregnant cows compared to non-pregnant cows at days 1, 2 and 6 of gestation. It may be concluded from present results that CIDR treatment is better than CIDR without estradiol to improve conception rate in dairy cattle.

• Journal of Korean Clinical Nursing Research
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• v.19 no.2
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• pp.275-284
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• 2013

Purpose: This study was aimed to find out the effect of core competency and teaching style on preceptor self-efficacy among preceptors. Methods: One hundred twelve nurses working at four university hospitals with previous preceptor experience participated in the survey. The data were analyzed by t-test, ANOVA, Pearson correlation coefficients and multiple regression. Results: The preceptors used 'judgment-initiative' teaching style most frequently, and reported the highest scores in the role model dimension of core competency. There were significant positive relations between age (r=.266, p=.005), clinical experience (r=.274, p=.004), preceptorship experience (r=.204, p=.032), core competency (r=.593, p<.001) and preceptor self- efficacy. But preceptor self-efficacy was not significantly different depending on the teaching style (F=0.72, p=.54). The most predictive factors of the preceptor self-efficacy were core competency and teaching style (judgment)(F=31.849, p<.001). The explained variance for preceptor self-efficacy was 35.9% in the model. Conclusion: The preceptor self-efficacy is essential for the preceptors' successful teaching experience and the clinical competency improvement of the entry level nurses. Management for an effective preceptor training program needs to focus on the improvement of core competency of preceptors, which will lead to strengthen their self-efficacy.

• Journal of Nutrition and Health
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• v.23 no.1
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• pp.11-18
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• 1990

Sprague-Dawley male rats were fed the diet of p/s 4.0(soybean oil : I), p/s 0.08(Beef tallow : II) at the level of 15% fat until 8 weeks after weaning. I & II groups were divided into 4 sub-groups by diets with or without 0.3% butylated hydroxytoluene(BHT). 2-AAF was injected at the age of $5_{1/2}$, 6, $5_{1/2}$, 7 weeks. MFO system enzyme(cytochrome p-450, cytochrome p-450 reductase, cytochrome b5) activities and lipid peroxide were determined from isolated liver microsome. 2-AAF injected young rats had growth retardatiion. Lipid peroxide values were not influenced greatly by dietary fat, 2-AAF and BHT. Cytochrome p-450 contents were increased in I-BHT-AAF & II-AAF groups by 2-AAF and its contents were not affected by BHT. But cytochrome p-450 and cytochrome p-450 reductase were not increased in soybean oil diet ybean oil groups. Cytochrome b5 was not influenced by dietary fat, 2-AAF and BHT. Cytochrome p-450 and lipid peroxide, cytochrome p-450 reductase and cytochrome b5, which transfer to MFO system, appeared to have positive correlations(r=0.2474, r=0.2475, p<0.05) each other. This result suggests that MFO system metabolizing 2-AAF was influenced by dietary fats and BHT. 2-AAF induced growth retardation in young rats.

• Journal of Korean Academy of Nursing
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• v.26 no.2
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• pp.467-482
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• 1996

This study was carried out to measure the degree of organizational commitment, job involvement, and role stress of clinical nurses, and to identify the relationships among personal characteristics, role stress, organizational commitment and job involvement in clinical nurses. The subjects were consisted of 412 nurses who were working at three General Hospitals in Chonbuk. The data were collected by self-reporting questionnaire from Sept. 20 to Sept. 31, 1995. The instruments used in this study were Organizational Commitment Scale developed by Mowday et al. and Job Involvement Scale developed by Kanungo. The role stress was measured by the scale developed by Rizzo( : role conflict, role ambiguity) and Beehr( : role overload). T-test, one-way ANOVA, Scheffe test and pearson's correlation coefficient were used for data ana1isis. Major findings were as follows : 1. Mean scores for organizational commitment were 3.008, job involvement 3.074, and role stress 2. 815( :role conflict 2.802, role ambiguity 2.253, role overload 3.294) on a 5 point scale. 2. All of personal characteristics were significantly related to the level of organizational commitment : age（r＝.481, p＝.000）, clinical experience（r＝ .479, p＝.000）, educational level（t＝4.11, p＝ .000）, position（F＝30.867, p＝.000）, marital status（t＝-5.63, p＝.000） and hospital agency （F＝21.374, p＝.000）. 3. All of personal characteristics were significantly related to the level of job involvement : age（r＝ .381, p＝.000）, clinical experience（r＝.393, p＝ .000）, educational level（t＝3.72, p＝.000）, position（F=18.004, p＝.000）, marital status（t＝-4. 91, p＝.000） and hospital agency（F=39.441, p＝ .000）. 4. There was a negative relationship between role stress and organizational commitment（r＝-.519, p＝.000）. 5. There was a negative relationship between role stress and job involvement（r＝-.256, p＝.000）. 6. There was a positive relationship between organizational commitment and job involvement （r＝.591, p＝.000）.

• The Journal of the Korea institute of electronic communication sciences
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• v.16 no.2
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• pp.247-254
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• 2021

Problems such as a limited frequency resource and interference between adjacent bands have been continuously raised because of rapidly developing wireless technology and communication service. In order to solve that problem, government has been developed and operating the Spectrum Management Intelligent System(SMIS). This paper compares the results simulated by SMIS with the ATDI and the Matlab coded provided by ITU-R for verification of SMIS operating for the public interests. The Recommendation ITU-R P.526, P.1546, and P.1812 among the propagation model loaded in SMIS were chosen because of the relation to the broadcasting service. The comparison and analysis result shows that the outputs derived by SMIS has the small error of less than 1 dB. This research could be utilized for the policy establishment and R&D for the frequency allocation and the interference between adjacent bands.

• Journal of Industrial Convergence
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• v.18 no.2
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• pp.51-57
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• 2020

This is a descriptive research to find out the effect of office workers resilience, depression and stress. The research subjects were 123 office workers in one location and data were collected from August 1 to 20, 2018. Collected data were analyzed by t-test, ANOVA, Pearson's correlation, and multiple regression analysis. The research results showed negative correlation between office workers resilience and their depression(r=-.195, p=.040), stress (r=-.424, p=.000). Sub-factors of resilience to affect their depression were satisfaction level in their lives (β=-.299, p=.001) and relationship(β=.300 p=.002). Sub-factors of resilience to affect their stress were satisfaction level in their lives(β=-.315, p=.001). This research was helpful to understand office workers resilience and it is necessary to develop a variety of education and training programs to enhance this.

• The Journal of the Korea Contents Association
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• v.17 no.5
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• pp.200-208
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• 2017

The purpose of this study was to examine the relationship of the severity, depression and to identify factors influencing quality of sleep in Restless Legs Syndrome(RLS) patients. A total of 303 consecutive RLS patients were assessed by self questionnaires and participant's medical records were reviewed for obtaining their clinical information. The collected data were analyzed by descriptive statistics, t-test, ANOVA, Pearson's correlation, and multiple regression. The quality of sleep was positively correlated with symptoms(r=. 21, p<.001) and depression(r=. 37, p<.001). The results of multiple regression analysis showed that significant variables influencing the quality of sleep were depression(${\beta}=.35$, p<.001), age(${\beta}=.21$, p<.001), and severity(${\beta}=.15$, p=.005). The explanation power of this regression model was 21.0% and it was statistically significant. As a result, to improve their sleep quality, the nursing interventions are required for RLS patients who have the depression, age, and severity.

• Journal of the Korea Convergence Society
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• v.11 no.12
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• pp.373-381
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• 2020

The purpose of this study was performed to examine the effects of simulation integrated with problem based learning(S-PBL) on self-leadership, critical thinking disposition, goal commitment for nursing students. The design was a one group pre-post test. The subjects consisted of one group of 90 fourth year nursing students of K Colleage. The period for this study was from March to June in 2019. The collected data were analyzed by Paired t-test, Pearson correlation coefficient. This study showed significantly higher self-leadership(t=-16.22, p<.001), critical thinking disposition(t=-11.36, p<.001), goal commitment(t=-7.06, p<.001). There was a significant positive correlation between self-leadership and critical thinking disposition(r=.438, p<.001), self-leadership and goal commitment(r=.285, p<.001). In conclusion, this study show that integrated with problem based learning(S-PBL) can be used for improvement the self-leadership, critical thinking disposition, goal commitment. It is suggested to check the effect of simulation integrated with problem based learning applying various nursing situations in the future.

• Journal of Industrial Convergence
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• v.22 no.4
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• pp.39-48
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• 2024

This study is a descriptive research study to determine the stress, resilience, and social support of nurses who cared for COVID-19 patients and the impact on post-traumatic growth. The survey was conducted on 179 nurses who cared for COVID-19 patients at a general hospital located in D City from July 19, 2021, to August 10, 2021. The collected data were analyzed using descriptive statistics, t-test, ANOVA, Pearson's correlation coefficient, and multiple regression analysis using SPSS 22.0. Post-traumatic growth showed a significant positive correlation with resilience (r=.499, p=<.001) and social support (r=.494, p=<.001). As a result of multiple regression analysis, prior knowledge about COVID-19 (𝛽=.142, p=.023), resilience (𝛽=.330, p =<.001), and social support (𝛽=.296, p =<.001) was a significant variable affecting post-traumatic growth. These results will be used as basic data to improve nurses' post-traumatic growth.