• The korean journal of orthodontics
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• v.42 no.5
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• pp.255-262
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• 2012

Objective: We aimed to compare the retention characteristics of Essix and Hawley retainers. Methods: Adolescents undergoing fixed appliance treatment at 2 centers were recruited for this study. Twenty-two patients (16 women and 6 men) wore Essix retainers (Essix group) while 20 (14 women and 6 men) wore Hawley retainers (Hawley group). The mean retention time was 1 year, and the mean follow-up recall time for both groups was 2 years. Two qualified dental examiners evaluated the blind patient data. Maxillary and mandibular dental casts and lateral cephalograms were analyzed at 4 stages: pretreatment (T1), post-treatment (T2), post-retention (T3), and follow-up (T4). Results: The results revealed that Essix appliances were more efficient in retaining the anterior teeth in the mandible during a 1-year retention period. The irregularity index increased in both arches in both groups after a 2-year post-retention period. The mandibular arch lengths increased during treatment and tended to return to their original value after retention in both groups; however, these changes were statistically significant only in the Hawley group. Cephalometric variables did not show any significant differences. Conclusions: The retention characteristics of both Essix and Hawley retainers are similar.

• The Journal of the Korea institute of electronic communication sciences
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• v.7 no.4
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• pp.833-837
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• 2012

This paper proposes a DRAM data retention time enhancement method that minimizes silicon loss and undercut at STI sidewall by reducing the SC1 (Standard Cleaning) time. SC1 time optimization debilitates the parasitic electric field in STI's top corner, which reduces an inverse narrow width effect to result in reduction of channel doping density without increasing the subthreshold leakage of cell Tr. Moreover, it minimizes the electric field in depletion area from cell junction to P-well, increasing yield or data retention time.

• Bulletin of the Korean Chemical Society
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• v.26 no.4
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• pp.629-633
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• 2005

In the reversed-phase chromatography, the retention time of sample was investigated based on the molecular structure of compound. Several descriptors that were related to retention factors were selected, and then the values of descriptors were calculated with several softwares. The effect of retention factor was measured with calculated values, and the results were obtained that each descriptors of molecular structure of compound have different effect on the retention factor. Therefore, the empirical equation for seven types of descriptors considered was obtained, and it has high values of correlation coefficient. Furthermore, the experimental data and calculated values have good agreement.

• Fashion & Textile Research Journal
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• v.1 no.4
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• pp.370-375
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• 1999

The aims of this research were to suppose the basic data to the producer for more useful manufactures production. 700 pieces of questionnaire were made and 552 pieces of questionnaire were used for this study. The results of this research are as follows ; Many consumers feel uncomfortable to using the unfinished clothing and by the point we could expect the shape retention finish has great possibilities. Just half percent of the people knew about the shape retention finish. So the producer have to do more advertisement for the shape retention finishing and functions. Generally the consumers are satisfied with the shape retention finished clothing.

• JSTS:Journal of Semiconductor Technology and Science
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• v.1 no.1
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• pp.1-14
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• 2001

Current status and prospects of FET-type FeRAMs (ferroelectric random access memories) are reviewed. First, it is described that the most important issue for realizing FET-type FeRAMs is to improve the data retention characteristics of ferroelectric-gate FETs. Then, necessary conditions to prolong the retention time are discussed from viewpoints of materials, device structure, and circuit configuration. Finally, recent experimental results related to the FET-type memories are introduced, which include optimization of a buffer layer that is inserted between the ferroelectric film and a Si substrate, development of a new ferroelectric film with a small remnant polarization value, proposal and fabrication of a 1T2C-type memory cell with good retention characteristics, and so on.

• Journal of Korean Academy of Nursing Administration
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• v.22 no.2
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• pp.137-147
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• 2016

Purpose: This study was designed to examine effects of sense of calling, job satisfaction and organizational commitment on retention intention in nurses who are at the advanced beginner-stage. Methods: Participants were 199 nurses with 13 to 36 months' clinical career at hospital located in Busan, Korea. Data were analyzed using descriptive statistics, independent t-test, one-way ANOVA, Scheffe test, Pearson correlation, and Multiple regression. Results: Retention intention correlated positively with sense of calling (r=.43, p<.001), job satisfaction (r=.31, p<.001) and organizational commitment (r=.31, p<.001). Factors affecting the participants' retention intention were found to be statistically significant (F=21.96, p<.001). Total factor score accounted for 24.1% of retention intention. Out of the related factors, the most influential factor was 'goals/meaning', belonging to the sub-areas of the sense of calling and explaining 18.2% of retention intention, followed by organizational commitment and average monthly income in that order. Conclusion: The results of this study suggest a need to develop a management program that helps promote retention intention for nurses at the advanced beginner-stage by both improving their monthly income and outside conditions and, more importantly, raising their sense of calling, especially in association with the goals/meaning of their life.

• The Korean Journal of Health Service Management
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• v.12 no.3
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• pp.27-39
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• 2018

Objectives: The purpose of this study was to verify the relationships among nursing work environment, job satisfaction, organizational commitment, and retention intention, as well as to clarify the factors that affect nurses' retention intention. Methods: The study included 163 nurses working in three general hospitals located in B city. Data were collected by a survey using self-administrated questionnaire and analyzed using the SPSS software. Results: The participants expressed a moderate level of retention intention. There were significant differences in retention intention by income (t=-2.13, p=.034) and intention to work (F=9.86, p=.001). The factors influencing retention intention were organizational commitment (${\beta}=.28$, p=.001), job satisfaction (${\beta}=.25$, p=.001), nursing work environment (${\beta}=.23$, p=.004), plan to work period (${\beta}=.13$, p=.027). These factors explained 55.3% of retention intention (F=41.079, p<.001). Conclusions: The findings showed that nursing administrators should develope programs that promote internal satisfaction for new nurses and strive to improve the human and physical aspects of the nursing work environment for career nurses.

• Journal of Korean society of Dental Hygiene
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• v.24 no.1
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• pp.27-33
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• 2024

Objectives: The purpose of this study was to examine factors affecting the retention intention of clinical dental hygienists. Methods: A total of 190 clinical dental hygienists were recruited as participants. Data were collected from March to May, 2023 and then analyzed using t-test, ANOVA, Pearson's correlation coefficient, and multiple regression through PASW Statistics 26.0. Results: Mean scores for job crafting, job satisfaction, positive psychological capital and retention intention were 3.22, 3.46, 3.57 and 3.46 respectively. Retention intention showed a significant relationship with positive psychological capital (r=0.299), job crafting (r=0.214), and job satisfaction (r=0.649). The results of the multiple regression analysis indicated that job satisfaction was the strongest predictor of retention intention, explaining 24.1% of the total variance (F=4.550, p<0.001). Conclusions: Variables that can affect the retention intention of clinical dental hygienists were identified, with job satisfaction emerging as a significant factor affect retention intention.

• Journal of Korean Academy of Nursing Administration
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• v.15 no.2
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• pp.182-192
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• 2009

Purpose: This study aimed to investigate the impact of nursing professionalism on the nursing performance, job satisfaction and retention intention among clinical nurses. Methods: A descriptive correlational research design was used for this study. All 329 clinical nurses were obtained by convenience sampling from 3 National or public hospitals, 3 university hospitals, and two private hospitals located in Seoul and Kyunggi province. The data were collected using a self-reporting questionnaire contained four instruments and questions for demographic characteristics of subjects from April 21st to September 1st, 2008. Collected data were analyzed on SPSS Win 16.0. Results: There was a significant relationship between nursing professionalism, nursing performance, job satisfaction and retention intention among clinical nurses. The nursing professionalism was identified as a predictor of nursing performance, job satisfaction, and retention intention. Conclusion: The strategies to promote and enhance the nursing professionalism of clinical nurses, in this era in which the nursing shortage become more and more problematic issue, are needed to design and be integrated into the management of human resource in nursing organizations.

• The Journal of Korean Academy of Prosthodontics
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• v.36 no.4
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• pp.566-580
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• 1998

Implant-supported overdenture is known as a useful appliance, instead of using the conventional complete denture, for better retention and stability. In this study 4 types of materials such as, gold bar/plastic clip(group AuP), gold bar/metal clip(group AuM), palladium bar/plastic clip(group PdP), and palladium bar/metal clip (group PdM) were used to evaluate the retention forces according the type of clips and alloys used for bar fabrication, in the Hader bar system. Repeated insertions and removals of overdenture were conducted in each group. and the retention forces were measured and compared the data of each group according to the number of insertion and removal. The obtained results were as follows, 1. In the comparison of retention forces according to type of bar-clip, retention was increased in the order of group AuM, PdM, PdP AuP. and the retention force of group AuM was significantly increased compared with those of others (p<0.05). 2. In the comparison of retention forces according to the number of insertion, only group PdP showed significant decrease in retention(p<0.05). 3. In the comparison of retention forces according to the type of bar and clip. there was no significant difference in the type of bar, but the retention of plastic clip was significantly higher than that of metal clip when Au bar was used(p<0.05). 4. In the observation of the bar surface, group AuM using Au bar and metal clip showed the most scratches among bar groups.