• The Research Journal of the Costume Culture
• /
• v.14 no.1
• /
• pp.93-107
• /
• 2006

This study was designed from the concept that there is a need to establish the uniform for new emerging jobs in modern society. The purpose of the study was to examine dental hygienists'wearing condition, satisfaction, and design evaluation as to provide information for the development of dental hygienists' uniform. Three hundred fifteen dental hygienists completed questionnaires, and data were analyzed by descriptive statistics, factor analysis, multiple regression, ANOVA, and Duncan's test. The findings from the study were following. First, majority of dental hygienists currently wear shirts and pants two-piece uniform in white with no print. Second, dental hygienists' overall satisfaction level for their uniform was medium, and symbolic satisfaction as well as functional satisfaction did not reach the medium level while aesthetic satisfaction was above medium. The satisfaction levels were significant different between groups according to the education, clinic size, and work experience. Third, aesthetic satisfaction levels influenced on the job image as professional. Finally, designs consisting of two-piece style with shirts and pants and having Peter pan collar were recorded high evaluation. The findings can be implemented into dental hygienists' uniform design.

• Korean Journal of Microbiology
• /
• v.24 no.3
• /
• pp.211-220
• /
• 1986

Nitrogen fixation (nif) genes of Rhizobium leguminosarum were transferred to nif Klebsiella pneumoniae and E. coli by conjugation after partial heat induction of $RP_4$ :: Mu cts in Rhizobium $R^+$ transconjugant, and the hybrid plasmids in the transconjugant strains were isolated and characterized. In order to transfer the nif genes from Rhizobium, the hybrid plasmid $RP_4$ :: Mu cts was transferred by conjugation from E. coil to the symbiotic nitrogen fixer, R. leguminosarum. After stabillity test, the $RP_4$ :: Mu cts in Rhixobium $R^+$ transconjugant was subjected to partial heat induction by culturing it statically at $38^{\circ}C$ for 16 hours, and then conjugated with the nif defective mutant strains of K. pneumoniae or nif mutant strains of E. coli having whole nif gene plasmid. Recombinant strains of K. pneumoniae, which could grow in a N-free medium and exhibit the nitrogenase activity were selected. However, in the case of E. coli, they could grow well in a NA medium containing antibiotices, but hardly frow in a N-free medium. The hybrid plasmids in these transconjugal strains were isolated by gel electrophoresis and compared their molecular sizes.

• Journal of Power Electronics
• /
• v.9 no.4
• /
• pp.544-552
• /
• 2009

This paper presents a novel spring pressure contact interconnect technique for medium power integrated power electronics modules (IPEMs). The key technology of this interconnection is a spring which is made from Be-Cu alloy. By means of the string pressure contact, sufficient press-contact force and good electrical interconnection can be achieved. Another important advantage is that the spring exhibits excellent performance in enduring thermo-mechanical stress. In terms of manufacture procedure, it is also comparatively simple. A 4 kW half-bridge power inverter module is fabricated to demonstrate the performance of the proposed pressure contact technique. Electrical, thermal and mechanical test results of the packaged device are reported. The results of both the simulation and experiment have proven that a good performance can be achieved by the proposed pressure contact technique for the medium power IPEMs.

• Journal of Korean Critical Care Nursing
• /
• v.10 no.1
• /
• pp.63-74
• /
• 2017

Purpose: The purpose of this study was to examine the effect of professional autonomy, organizational commitment, and perceived patient safety culture on patient safety management activities of nurses in medium and small-sized hospitals. Methods: A cross-sectional design was employed. Self-reported questionnaires were completed by 121 nurses with at least 3 months of working experience in medium and small-sized hospitals located in B city. Data were analyzed using descriptive statistics, a t-test, a one-way ANOVA, Pearson correlation coefficients, and a multiple regression analysis. Results: Professional autonomy (r=.22, p=.016), organizational commitment (r=.34, p<.001), and perceived patient safety culture (r=.55, p<.001) had a statistically significant positive correlation with patient safety management activities. The factors that might affect patient safety management activities were professional autonomy (${\beta}=.23$, p=.003) and perceived patient safety culture (${\beta}=.55$, p<.001). The explanatory power of these factors for patient safety management activities was 33.5% (F=21.19, p<.001). Conclusions: The development of repetitive and continuous education programs is needed to improve a nurse's professional autonomy and perceived patient safety culture.

• Journal of Korean Academy of Nursing Administration
• /
• v.15 no.1
• /
• pp.16-25
• /
• 2009

Purpose: This study was to identify the factors influencing turnover intention of nurses in small and medium-sized hospitals. Method: The participants in this descriptive survey on causal relations were 192 nurses who were working at small and medium-sized hospitals in Daegu city. The data were collected by self-reporting questionnaires and analysed by the SPSS Win 14.0 program using descriptive statistics, t-test, ANOVA, Pearson's correlation coefficients and stepwise multiple regression. Result: The mean for job characteristics scores were 2.90, the job satisfaction scores were 3.00, the organizational commitment scores were 3.00, job stress scores were 2.42, the turnover intentions scores were 3.08. Turnover intention according to general features were shown as following; age, marital status, clinical career, work schedule type, frequency of night duty. The relationship between turnover intention and job stress had positive correlation. But the relationship between turnover and other factors that job satisfaction, organizational commitment had negative correlation. The causal factors of turnover intention were organizational commitment, job satisfaction, job stress, and job characteristics, frequency of night duty. $R^=.39$. The organizational commitment were the highest significant predictors of turnover intention. Conclusions: The findings of study suggest that broad intention program should be provided to prevent problems of turnover.

• Corrosion Science and Technology
• /
• v.3 no.5
• /
• pp.187-193
• /
• 2004

We have investigated the differences between the general corrosion and microbiologically influenced corrosion (MIC) of steels in terms of electrochemical behavior and surface phenomena. Corrosion potential of steels in the absence of SRB (sulfate-reducing bacteria) shifted to a low level and was maintained throughout the experimental period (40 days). The potential in the presence of SRB, however, shifted to a noble level after 20 days' incubation, indicating the growth of SRB biofilms on the test metal specimens and a formation of corrosion products. In addition, the color of medium inoculated with SRB changed from gray to black. The color change appeared to be caused by the formation of pyrites (FeS) as a corrosion product while no significant color change was observed in the medium without SRB inoculation. Moreover, corrosion rates of various steels tested for MIC were higher than those in the absence of SRB. This is probably because SRB were associated with the increasing corrosion rates through increasing cathodic reactions which caused reduction of sulfate to sulfide as well as formation of an oxygen concentration cell. The pitting corrosions were also observed in the SRB-inoculated medium.

• Journal of Microbiology and Biotechnology
• /
• v.12 no.2
• /
• pp.279-285
• /
• 2002

Phytase (myo-inositol hexakisphosphate phospho-hydrolase, EC 3.1.3.8) catalyzes the hydrolysis of phytate (myo-inositol hexakisphosphate) to release inorganic phosphate. A bacterial strain producing phytase was isolated from soil around a cattle shed. To identify the strain, cellular fatty acids profiles, the GC contents, a quinine-type analysis, and physiological test using an API 20NE kit were carried out. The strain was identified to be a genus of Pseudomonas sp. and named as Pseudomonas sp. YH40. The optimum culture condition for the maximum productivity of phytase by Pseudomonas sp. YH40 were attained in a culture medium composed of $1.0\%$ (w/v) glycerol, $2.0\%$ (w/v) peptone, and $0.2\%$ (w/v) $FeSO_4{\cdot}7H_2O$. Within the optimal medium condition, the production of phytase became highest after 10 h of incubation, and the maximal phytase production by Pseudomonas sp. YH40 was observed at $37^{\circ}C$ and pH 6.0.

• International Journal of Internet, Broadcasting and Communication
• /
• v.11 no.4
• /
• pp.65-70
• /
• 2019

We are looking the impact associated with globalization in favor of small and medium enterprises (SMEs) growth and how helped to reduce the obstacle facing SMEs growth. We used empirical analysis in order to examine the relationship underlying the globalization and its impact to SME growth. We employed primarily data from Tanzania SMEs. Further we seeks to explain the negative notion that has been created that globalization is not friendly to SME growths. We employed primary data from Tanzania SMEs. The partial least squares (PLS) was used for analysis. The conclusion has indicated that globalization has a relationship with SMEs growth and has contributed to the reduction of obstacles that inhibit SMEs growth. However study confirmed controversial result on part of availability of managers and manpower with global perspectives to influence SMEs growth. The test accepted that globalization has influenced availability of managers with global perspectives but reject the availability of these managers influences the SMEs growth The results give a clear outlook to help policy maker in policy review process, formulate base for extensive study on issues for manager perspectives and draw intervention.

• Journal of East-West Nursing Research
• /
• v.27 no.2
• /
• pp.114-123
• /
• 2021

Purpose: This study investigated the influence of nurses' organizational communication and self-leadership on patient safety competence in comprehensive nursing care units of small and medium-sized hospitals. Methods: A descriptive design was used and self-reported questionnaires were used to collect data from 165 nurses in Seoul from February to March, 2020. Data were analyzed using descriptive statistics, t-test, ANOVA, Pearson correlation coefficient, and multiple linear regression with SPSS/WIN 22.0 program. Results: A mean score of organizational communication was 3.20±0.49, self-leadership 3.58±0.50, and patient safety competency 4.01±0.49 out of 5. A significant positive correlation was found between patient safety competence, organizational communication and self-leadership. Self-leadership and combined ward explained 32% of the variance of patient safety competence (Adjusted R²=.32, p<.001). Conclusion: Patient safety competence in comprehensive nursing care units are associated with self-leadership and organizational communication. Systemic education to improve patient safety competence in small and medium sized hospitals should be implemented to promote organizational communication as well as self-leadership.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
• /
• v.12 no.4
• /
• pp.395-405
• /
• 2019

The government has strengthened the system of restricting participation of large corporations to limit participation in national information system construction projects and to increase participation of SME software companies. This study analyzes the financial performances of small and medium sized IT firms in Korea three years prior and 3 years after the restrictions on participation of large firm. A sample of 121 small and medium-sized IT services firms were classified into 3 groups and statistical techniques (T-test and one-way ANOVA) were used for the purpose of the analysis. In the three years after the restriction of participation of large corporations, the total assets and sales of the medium and small IT service firms were positive, but the operating profit and net profit were negative. There were many worries about the introduction of the restriction on the participation of large corporations, but many were stabilized. However, the negative impact was more pronounced for SMEs. Therefore, the reduction effect of SME IT service companies is different from the first legislative purpose of enforcing the restriction system of large enterprises, so we propose to revise the policy.