• Journal of the Korean Institute of Telematics and Electronics D
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• v.36D no.3
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• pp.1-11
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• 1999

It is now common practice to utilize the quadrature RF coils to improve the signal-to-noise ratio (SNR) in the Magnetic Resonance Imaging (MRI) System. In addition, to make such an available SNR improvement, it is mandatory to use a well-designed quadrature coupler, which facilitates a perfect 3-dB coupling and quadrature-phase shift. However, the four ports matching condition has to be well considered during the RF excitation and the signal detection period. This work investigates the effects of such a mismatching condition (especially, due to patient) from the analysis, simulation, and real implementation and firstly proposes dynamic loading technique for a quadrature coupler and transmitting/receiving switch module to minimize a patient mismatching and enhance a system reliability. Also, we designed and implemented the quadrature coupler and transmitting/receiving switch module using microstrip. As a result, the SNR of our MRI system using the microstrip quadrature coupler and transmitting/receiving switch module with dynamic load increases 3 dB compared with the old one using USA quadrature switch. Also, the power capability of quadrature coupler and transmitting/receiving switch module is 5-kw peak power. Considering power loss and reduction of size, we used a RT/duroid 6010 substrate with high permittivity and for simulation we use Compact Software.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.5
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• pp.2163-2171
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• 2011

This study evaluated the complaint rates of musculoskeletal symptoms and investigated the related factors of musculoskeletal symptoms among nurses in a university hospital. For 249 nurses working at the ward, we used the self-administered questionnaires to examine sociodemographic, health related factors, job-related, subjective musculoskeletal symptoms designed by NIOSH. during the period from Aug. 1st to Aug. 31st, 2010. As a results, one and more of musculoskeletal symptoms was 66.3%, and two and more of that was 45.8%. The complaint rates of musculoskeletal symptoms were 44.2% in the shoulders, 33.7% in the low back, 33.3% in the legs/feet, 29.7% in the neck, 14.9% in the hands/wrists/fingers, 4.8% in the arms/elbows. For the age adjusted odds ratio for the musculoskeletal symptoms of neck, shoulders, low back and legs/feet, the groups who are shift work, staff nurse, who reported that their subjective health status are not good, and whose physical burden of works are hard were increased than their respective counterparts. In conclusion, the complaint rates of musculoskeletal symptoms was differently revealed by variable factors such as sociodemographic, health related factors and job-related factors.

• The Journal of Korean Institute for Practical Engineering Education
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• v.3 no.2
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• pp.11-17
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• 2011

As a rapid rate of social change and competitive, paradigm of industry environment manufacturing products and services is shifted. Engineers design, develop, manufacture the products and services are strongly asked competency of different new creative practices. This means while industrial structure has been shifted from mass production to various allied production and social engineering based production, qualifications of engineers are required to individual creative competency as alternatives. In order to improve the competency, engineer become the creative people have ability to develop the professional knowledge competency and expand the competency to convergence the new product and services with sensing the life and social structure shift, human engineering, psychology, and emotion. For the competency, we develop the training program "improving convergence, creativity through Art." we intend that the program should be composed of creative engineering mechanism combined creative arts mechanism. It has been operated to the engineers for 17 weeks. we will discuss the program result and research direction and utilization in depth.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.3
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• pp.489-498
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• 2016

This study examined the effects of internal marketing and customer orientation on the organizational commitment of nurses in specialized hospitals. This research was conducted from May 1 to 30, 2015 and involved 149 nurses at 5 specialized hospitals in Busan, The collected data were analyzed by descriptive statistics, t-test, ANOVA, Scheffe's test, Pearson correlation coefficients, stepwise multiple regression by the SPSS WIN 18.0 program. As a result, there were significant differences in the organizational commitment according to age, marital status, education, clinical experience, position, work shift, working unit, number of beds, and experience of participation for employee satisfaction survey. Organizational commitment was positively related to the internal marketing. In addition, there was a positive correlation between the organizational commitment and customer orientation. Meaningful variables that influenced the organizational commitment were internal marketing, working unit, education, and position. The total explanation power was 58.5% and the internal marketing was the most influential factor. In conclusion, to enhance the organizational commitment of nurses working in specialized hospitals, educational opportunities need to be provided to increase the professionalism of nurses, and efforts will be needed to improve the working environment and develop internal marketing strategies, such as regular satisfaction surveys.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.6
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• pp.302-311
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• 2017

This is predictive correlational study to identify the influence of emotional labor and resourcefulness on turnover intention among clinical nurses. The participants were 138 clinical nurses and the data were collected by an online survey using a self-administered questionnaire from 10th to 17th April, 2016.The collected data were analyzed using SPSS program through t-test, One-way ANOVA, Scheffe's test and multiple linear regression. In the results, there were differences in emotional labor by age, marital status, job position, clinical career, shift work, in resourcefulness by gender, clinical career, and in turnover intention by age. As a result of multiple linear regression, emotional labor and resourcefulness were selected as significant related variables affecting nurse's turnover intentions. These factors accounted for 3.7% of turnover intention, which necessitates the consideration of a specific plan to reduce emotional labor and increase resourcefulness for decreasing clinical nurse's turnover intention.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.2
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• pp.185-205
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• 2017

The purpose of this research is to examine the relationship between the adult attachment of married employees, their job motivation and marital relationship. For this purpose, a questionnaire survey was carried out with 370 married employees in the Chungnam area as the target from Sep. 10 to Oct. 14, 2016. The collected data was analyzed using SPSS 23.0 using descriptive statistical analysis, the independent sample T-test, ANOVA analysis, Pearson correlation, and structural equation analysis. First, significant differences were revealed in the level of attachment avoidance, satisfaction with the marriage relationship, and job motivation according to the age group, in the level of attachment avoidance and satisfaction with the marriage relationship according to the education level, in the level of attachment avoidance and satisfaction with the marriage relationship according to the marriage period, in job motivation according to the position, in satisfaction with the marriage relationship according to the average household income, and in satisfaction with the marriage relationship according to the work shift pattern. Second, although a significant negative correlation appeared between attachment anxiety and attachment avoidance, a significant positive correlation was found between attachment avoidance and job motivation. Also, although a significant negative correlation appeared between attachment avoidance and marital relationship, a significant positive correlation was found between job motivation and marital relationship. Third, to examine the mediating effect of satisfaction with the marital relationship on the relationship between adult attachment and job motivation, a structural equation analysis was carried out. As a result, the indirect effect of attachment anxiety on job motivation turned out to be significant and its complete mediating effect was confirmed. This suggests that when developing programs to improve job motivation within the workplace or consultative interventions for the enhancement of marital relationships, the above characteristics of individuals should be taken into consideration.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.7
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• pp.543-554
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• 2016

This study examined the fatigue and its association with job stress among male workers engaged in small-scale manufacturing industries. The study subjects were 553 male workers under 50 members of manufacturing industries. The study survey was a structured questionnaire of the Korean Occupational Stress Scale (KOSS) and Multidimensional Fatigue Scale (MFS) during April, 2015. The data were analyzed using the SPSS ver 21.0 program. The results showed that the high risk fatigue group was significantly higher in the high risk group of job stress than in the normal group of job stress. Fatigue was positively correlated with job stress. The odds ratio of the high risk fatigue group were increased significantly in the high risk group of job stress than in the normal group of job stress. The factors of influence with explanatory powers of 27.7% on fatigue included age, marital status, educational level, subject health status, sleeping time, drinking coffee, job tenure, shift work, visiting out-patient department, sense of satisfaction in job life, and job stress. Fatigue was associated with the sociodemographic characteristics, health behavior related characteristics, job-related characteristics, and job stress.

• Korean Journal of Microbiology
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• v.51 no.4
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• pp.319-328
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• 2015

The $sdu1^+$ gene encodes Sdu1, a PPPDE superfamily member of deubiquitinating enzymes (DUBs) in Schizosaccharomyces pombe. Sdu1 was previously shown to contain an actual ubiquitin C-terminal hydrolase (UCH) activity using the recombinant plasmid pYSTP which harbors the $sdu1^+$ gene. This work was designed to assess a thermotolerant role of Sdu1 against high incubation temperatures. In the temperature-shift experiments, the S. pombe cells harboring pYSTP grew much better after the shifts to $37^{\circ}C$ and $42^{\circ}C$, when compared with the vector control cells. After being shifted to $37^{\circ}C$ and $42^{\circ}C$ for 6 h, the S. pombe cells harboring pYSTP contained lower reactive oxygen species (ROS) levels, compared with the vector control cells. The nitric oxide (NO) levels of the S. pombe cells harboring pYSTP were slightly lower than those of the vector control cells in the absence or presence of the temperature shifting. The total glutathione (GSH) levels of the S. pombe cells harboring pYSTP were significantly higher than those of the vector control cells. Total superoxide dismutase (SOD) and GSH peroxidase activities were also higher in the S. pombe cells harboring pYSTP after the temperature shifts than in the vector control cells. In brief, the S. pombe Sdu1 plays a thermotolerant role against high incubation temperature through the down-regulation of ROS and NO and the up-regulation of total GSH content, total SOD and GSH peroxidase activities.

• Journal of the Korean Arthroscopy Society
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• v.3 no.1
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• pp.9-16
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• 1999

Purpose : We have evaluated the outcome of the operative treatment of PCL rupture using the achilles tendon allograft. Materials and Methods : A retrospective study was completed for 30-PCL reconstruction cases, using the achilles tendon allograft from september 1996 to march 1998. There was an average follow up of 24 months, with range of 12 to 50 months. Results : The active range of motion was improved postoperatively. The Lysholm Knee Score was improved from a mean of 54 points preoperatively to 87 points postoerative 18 months. The "Cybex 340 isometric test" revealed satisfactory results compared with autograft. Conclusions : Use of allograft for recostruction of the PCL is an attractive option because it precludes the harvesting of autogenous tissue in a knee that is already at risk for patellofemoral and tibiofemoral osteoarthrosis.

• The Korean Society of Law and Medicine
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• v.16 no.1
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• pp.125-151
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• 2015

South Korea's medical system has dual systems-that is, Oriental and Western Medicine. Both are different from method for diagnosis or treatment of diseases and Scientific principle. Of the characteristics of Oriental medical practice in comparison with Western medical practice, notably, it is difficult to acknowledge specific constitutions, Oriental medical doctors' discretion is broad, and Oriental medical practice has a low invasiveness. Thus, it is difficult to acknowledge human specific constitutions when grounded on Oriental medical principles, thereby making it difficult for Oriental medical doctors to argue such specific constitutions as a means of defending against their medical negligence. And, it is difficult to prove Oriental medical doctors' negligence because Oriental medical doctors' scope of discretion is broad. Collaboration of Oriental medicine and western medicine can diagnose and treat the patient's diseases from a different viewpoint, making both medicines complementary. Oriental medicine and western medicine are independent of each other, equal, thus making them divided horizontally. Horizontal medical service division involves the principle of trust, but the principle of trust does not always apply to Oriental medicine and western medicine, because if patients shift from one area of medicine to another, the scientific principle, diagnostic method and treatment method of that medical area should be different. Application of the principle of trust to both of them needs to be analyzed according to types of medical institutions where transfers occur, and to the scope of work division between them.