• Clinical and Experimental Reproductive Medicine
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• v.47 no.4
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• pp.312-318
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• 2020

Objective: The objective of the study was to compare the effects of long-term and short-term embryo culture to assess whether there is a correlation between culture duration and clinical outcomes. Methods: Embryos were divided into two study groups depending on whether their post-warming culture period was long-term (20-24 hours) or short-term (2-4 hours). Embryo morphology was analyzed with a time-lapse monitoring device to estimate the appropriate timing and parameters for evaluating embryos with high implantation potency in both groups. Propensity score matching was performed to adjust the confounding factors across groups. The grades of embryos and blastocoels, morphokinetic parameters, implantation rate, and ongoing pregnancy rate were compared. Results: No significant differences were observed in the implantation rate or ongoing pregnancy rate between the two groups (long-term culture group vs. short-term culture group: 56.3% vs. 67.9%, p=0.182; 47.3% vs. 53.6%, p=0.513). After warming, there were more expanded and hatching/hatched blastocysts in the long-term culture group than in the short-term culture group, but there was no significant between-group difference in embryo grade. Regarding pregnancy outcomes, the time to complete blastocyst re-expansion after warming is shorter in women who became pregnant than in those who did not in both culture groups (long-term: 2.19±0.63 vs. 4.11±0.81 hours, p=0.003; short-term: 1.17±0.29 vs. 1.94±0.76 hours, p=0.018, respectively). Conclusion: The outcomes of short-term culture and long-term culture were not significantly different in vitrified-warmed blastocyst transfer. Regardless of the post-warming culture time, the degree of blastocyst re-expansion 3-4 hours after warming is an important marker for embryo selection.

• Asian-Australasian Journal of Animal Sciences
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• v.20 no.7
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• pp.1015-1022
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• 2007

The spermatogonial stem cell (SSCs) is unique in that it is the only cell in the adult male that can contribute genes to a subsequent generation. Permanent modification of the germ cell line may be realized if stem cells could be cultured, transfected with unique genes, and then transplanted into recipient testes. We developed a culture system that supported long-term viability of SSCs. We used a retrovirus vector (pMSCV including ${\beta}$-galactosidase) to stably transfect spermatogonia following long-term culture using the system developed. Expression of the reporter gene ${\beta}$-galactosidase controlled by the retroviral vector was stable in long-term cultured SSCs. We confirmed the retroviral-mediated ${\beta}$-galactsidase gene could be expressed in germ cells in recipient mice following SSCs transplantation.

• The Research Journal of the Costume Culture
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• v.18 no.5
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• pp.1048-1061
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• 2010

The purpose of the study was to compare the culture and the clothing value between Korean and American college students, especially men. Also, this study was to analyze the culture effect on the clothing value. The survey was performed and 200 questionnaires were utilized for this study. The SPSS 12.0 was used to analyze the technical statistics like average, frequency, t-test, factor analysis, multiple regression analysis. The result showed, first, there were some 2 major cultural differences such as power distance and long-term orientation between Korean and American college men. Comparatively, Korean college men showed higher masculinity and lower power distance and long-term orientation. Second, there were differences in the clothing value aspect. Both of them considered the economic clothing value to be most important. Third, there were some differences in the clothing value because of the cultural differences. For Korean college men, there were masculinity and long term orientation that had an effect on the social and religious clothing values, however, for American college men, power distance, masculinity and long term orientation that had an effect on the social, religious, theoretical and economic values.

• Journal of Korean Public Health Nursing
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• v.33 no.3
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• pp.379-389
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• 2019

Purpose: The study investigated the factors associated with compassion satisfaction of nurses in long-term care hospitals with a focus on the culture of patient safety. Methods: This study was conducted using a descriptive survey. The participants were nurses in 1 metropolitan city and 2 other cities (N=164). The data was collected in October, 2018 and analyzed using the SPSS Win 25.0 program. Results: The factors associated with compassion satisfaction were job satisfaction, work attitude, management practice, leadership of the managers of patient safety culture, and clinical career (F=21.66, p<.001). These variables explained 49.3% of the variance in compassion satisfaction of long-term care hospital nurses. Conclusion: These results highlight the importance of long-term care hospital nurses' compassion satisfaction and can be used as meaningful data for intervention to promote a culture of patient safety, and nurses' job satisfaction.

• Korean Journal of Occupational Health Nursing
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• v.31 no.4
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• pp.157-166
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• 2022

Purpose: The purpose of this study was to identify factors influencing fall-prevention behaviors of nurses working in long-term care hospitals. Methods: Participants included 147 nurses working in 10 long-term care hospitals in B city. Data were collected from September 20-October 12, 2016. SPSS/WIN 21.0 was used for analysis with t-test, ANOVA, Scheffé test, Pearson correlation coefficients, and multiple regression. Results: It was found that attitude toward fall (r=.29, p<.001) and patient safety culture (r=.25, p=.002) had a significant positive correlation with fall-prevention behaviors of nurses working in long-term care hospitals. The factors influencing fall-prevention behaviors in participants were clinical career and patient safety culture (β=.21, p=.012), contributing to 19% of the total variance in fall- prevention behaviors. Conclusion: The findings showed that systematic delivery of differentiated fall prevention education is preferred to nurse's clinical career as a private factor to improve fall-prevention behaviors of nurses in long term care hospital. Particularly, it is imperative to conduct periodical and practical fall-prevention education for nurses to prevent career discontinuity. An independent report system and open communication system as well as a scheme that can disseminate patient safety culture in individual departments to implement patient direct nursing are required to encourage patient safety culture in organizations.

• The Research Journal of the Costume Culture
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• v.23 no.3
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• pp.484-497
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• 2015

The purpose of this study was to examine the effect that relation-building factors between beauty service stores and customers have on relationship quality and long-term orientation. Specifically, the influence of relation formation factors (relationship benefits and communication) on relationship quality (satisfaction and trust) and long-term orientation was empirically examined. This research was conducted through a questionnaire survey, and 402 adults were targeted from Jan. 6 to Jan. 16 in 2014. The results were as follows. First, the relationship benefits of beauty service stores were classified into four dimensions of psychological, social, economic, and informational benefits. It was found that only the dimension of psychological benefits had a significant influence on long-term orientation among the relationship benefits dimensions. Second, it was found that the psychological benefits of beauty service stores had positive effect on relationship quality (satisfaction and trust). It was shown that informational benefits had a significant influence on satisfaction only. Third, it appeared that communication had a positive effect on long-term orientation. Fourth, it was found that communication had a significant influence on relationship quality(satisfaction and trust). Finally, it was shown that relationship quality (satisfaction and trust) had positive effect on long-term orientation. The implications of the research and direction for future study were discussed.

• Journal of the Korean Society of Food Culture
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• v.25 no.5
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• pp.589-597
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• 2010

The purpose of this study was to investigate whether strategic alliance sales promotions have short-term or long-term or sales or communication effects in the family restaurant industry. The hypotheses were tested in family restaurant settings using a sample of customers visiting and enjoying food in the metropolitan city of Daegu. Empirical results confirmed that strategic alliance sales promotions had short-term and long-term effects, as well as sales and communication effects. Therefore, family restaurant managers should adopt or keep sales promotion strategic alliances with credit card companies. Furthermore, family restaurant managers should adopt or keep sales promotions with other companies. In a future study, more variables should be selected to test the sales promotion effects of strategic alliances.

• Journal of Industrial Convergence
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• v.20 no.11
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• pp.149-155
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• 2022

This study conducted a descriptive research to compare the degree of patient safety culture awareness among general hospitals and long-term care hospital nurses. The subjects of this study were 150 nurses who worked for more than 6 months at 2 general hospitals and 4 long-term care hospitals located in 3 cities, the data has collected from October to December 2021. To Measure patient safety culture, the patient safety culture measurement tool developed by Soon Gyo Lee was used. Data were analyzed by 𝑥²-test, ANOVA, and t-test using SPSS 20.0 program. As a result of the study, the variables with high patient safety culture were the nurse's age(F=44.17, p=.000), clinical career(F=62.86, p=.000), and current workplace career(F=26.27, p=.000). Among the subdomains of patient safety culture, leadership(t=2.07, p= .040) and patient safety priorities(t=2.18, p=.031) were found to be higher in long-term care hospital nurses than general hospital nurses. Based on this result, we expected that it can be used as data in developing programs to raise the level of patient safety culture in hospitals and long-term care hospitals.

• The International Journal of Costume Culture
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• v.9 no.1
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• pp.15-26
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• 2006

The purposes of this study were 1) to identify the dimension of perceived service quality of fashion retail stores in the basis of expanded marketing mix, 2) to investigate the effect of each dimension on long-term orientation/customer satisfaction, trust, commitment and WOM/repurchase intention) on perceived service quality. The questionnaires were administered to 333 women shopped in a fashion retail store in Gwang-ju city. Data were analyzed by using exploratory and confirmatory factor analysis, Cronbach' ${\alpha}$, and multi-regression analysis. The results were as follows: 1) The dimension of perceived service quality based on expanded marketing mix were classified as follow: product, price, place, promotion, people, physical evidence, process services. Long-term orientation was categorized into four factors: customer satisfaction, trust, commitment, WOM/repurchase intention. 2) For the effect of the perceived service quality by dimension, product, people, physical evidence, process services have significant effect on long-term orientation, while price, place, promotion services have not significant.

• Fisheries and Aquatic Sciences
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• v.19 no.4
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• pp.16.1-16.8
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• 2016

To culture germline stem cells in vitro, establishment of the cell lines that can be used as the feeder cells is a prerequisite. In this study, we tried to establish gonad-derived cell lines in Siberian sturgeon (Acipenser baerii). Five 1-year-old A. baerii were used as a donor of gonad tissues, and gonad-dissociated cells were cultured in vitro. Subsequently, determination of growth conditions, long-term culture, characterization, and cryopreservation of the cell lines were also conducted. Five gonad-derived cell lines were stably established and cultured continuously over at least the 73th passage and 402 culture days under the media containing 20 % fetal bovine serum at $28^{\circ}C$. All cell lines consisted of two main cell types based on morphology even if the ratio of the two cell types was different depending on cell lines. Despite long-term culture, all cell lines maintained diploid DNA contents and expression of several genes that are known to express in the A. baerii gonad. After freezing and thawing of the cell lines, post-thaw cell viabilities between 57.6 and 92.9 % depending on cell lines were indentified, suggesting that stable cryopreservation is possible. The results and the cell lines established in this study will contribute to the development of an in vitro system for A. baerii germline stem cell culture.