• Journal of the Korea Society of Computer and Information
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• v.12 no.5
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• pp.253-261
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• 2007

Researcher studied the factor of successful implementation for AIS. I found the facts that the elements of IMB affected the Practical level of AIS and the affected factors are operating of IMS, security and emergency action. Specially I suggest that the importance of operating procedure planning, maintenance of operating, and continuous improvement, security and emergency planning, doing and check. Most of important factors of improving the level of AIS, are the implementation of IMS. the results of this research support this suggestion.

• The KSFM Journal of Fluid Machinery
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• v.18 no.2
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• pp.37-42
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• 2015

In the purpose of this study, we investigate the characteristics of the pilot-scale wastewater treatment system applied to BAF, MBR and IPNR as examining the removal efficiency of organic pollutants and operating factors in small decentralized wastewater treatment systems, and operating factors. For long-term operation period of more than nine months, pilot-scale plant operating results appeared very stable. This results were the removal efficiency of BOD was 80.3% above and removal efficiency of COD with an average of about 91.0%, satisfied the final effluent water quality standards. TN in the final effluents was the average concentration of 7.9 mg/L, was satisfactory water quality standards 10 mg/L of TN.

• Transactions of the Korean Society for Noise and Vibration Engineering
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• v.25 no.10
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• pp.685-691
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• 2015

In this work, to identify effective parameter for performance of piezoelectric jetting dispenser, experimental investigation is carried out based on design of experiment. After preparing jetting dispenser using two stack-type piezoelectric actuators, basic working principle of the jetting dispenser is described. Eight operating conditions are chose as main factors and it is assumed that each factor has two levels. To reduce number of experiments for performance evaluation, the experimental sets are designed based on factional factorial design method. Experimental setup is established and the weight of single dot is measured by using precision scale. The main and interaction effects of factors are analyzed using commercial statistical program and optimal operating condition for small amount and small variation of weight of dispensed single dot are determined.

• 전기의세계
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• v.14 no.4
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• pp.8-17
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• 1965

Firstly, this study has analyzed the following factors affecting the optimum specifications and design of distributive transformers: 1. Facilities installation cost per unit power output. 2. Facilities operating & maintenance cost per unit power output. 3. Production cost per unit power output. 4. Load factor. 5. Loss factor. Secondly, it has clarified the relations between the following factors and the specifications and design of distributive transformers; 1. No-load loss., 2. Load loss., 3. Voltage regulation., 4. Exciting current. Finally, it has determined the method of the most economic design for the transformers using the above factors and relations, and, for optimum the illustrative purpose, suggested their optimum specifications, way of evaluation, and merits by means of typical example.

• Journal of Energy Engineering
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• v.4 no.3
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• pp.338-343
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• 1995

The objective of this study is to predict the reliability of the electronic control module at ROD control system in nuclear power plant. Maintaining of the reliability is important issue in the complext system like nuclear plower plant, military equipment, satelite system, etc., because the failure of reliability brings etravagant economic loss and deteriorates public acceptance. In addition to the prediction of reliability, the fators affect the reliability including operating condition, environment, temperature and quality factors were analyzed and simulated. The result shows that the quality factors are more critical for the higher reliability than other two factors.

• Asia pacific journal of information systems
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• v.8 no.1
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• pp.125-144
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• 1998

This article describes the use of Internet as a means of operating the class which is business simulation game. The aims of investigation are to summarize the characteristics of distance learning using information technology, to find proper operating procedures for the internet class focusing on small group formation, to check the major factors affecting the teaching effectiveness, and to suggest the business simulation game as a proper distance learning class using internet.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.4
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• pp.1781-1791
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• 2013

The present study was intended to measure the level of psychosocial stress and fatigue symptom according to the various characteristics such as sociodemographic, health-related, job-related, job stress factors, and psychosocial factors among nurses working at ward and operating room in university hospitals, and to reveal the relation between these factors and psychosocial stress and fatigue symptom. The self-administered questionnaires were given to 220 nurses working at ward, and 147 nurses working at operating room in 4 participating hospitals located in Daejeon City during the period from July 1st to Aug 31st, 2012. As a results, the factors related to the psychosocial stress of nurses working at ward were age, subjective health status, job career, satisfaction of work, fit to the job, job demand, job control, coworker support, self-esteem, locus of control, type A behavior pattern. In operating room, there were age, sleep hours, subjective health status, job career, physical burden of work, satisfaction of work, fit to the job, consider quitting the job, job demand, job control, type A behavior pattern. The factors related to the fatigue symptoms of nurses working at ward were age, leisure time, subjective health status, satisfaction of work, consider quitting the job, job demand, locus of control, type A behavior pattern. In operating room, there were age, subjective health status, physical burden of work, supervisor support, coworker support, locus of control. Based on the study results, we suggest that the factors related to psychosocial stress and fatigue symptom of nurses were different from working station. We need development and application of programs to keep under management psychosocial stress and fatigue symptom.

• Korea Journal of Hospital Management
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• v.7 no.3
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• pp.44-62
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• 2002

Advanced surgical technology demands more precise, meticulous, and time-consuming procedures. In addition, the patient's preference of tertiary health providers makes over crowding of the University Hospitals. Therefore, it has been necessary to maximize utilization of the operating room of such hospitals to accommodate these requirements. This study, targeting 1,302 surgical cases performed in 22 operating rooms at a university hospital in Seoul from October 8 to November 1, 2001, analyzed reasons for delay, and factors that caused delayed use of operating rooms. This study also assessed that the rate of operating room use would increase if the sources for possible reform were improved. 1. Among total of 1,302 cases of surgery, the incidence of surgeries in which there were no time delays and no factors for delay were discovered is 71.4% or 930 cases: the incidence in which surgeries were delayed was 28.6% or 372 cases. 2. As results of logistic regression for delay, procedures involving women were delayed 1.4 times more frequently than those of men. Compared to Department A, Department B was 1.8 times more likely to be delayed, and Department H was 0.4 times less likely to be delayed. Regional anesthesia was 2.4 times more likely to be delayed than general anesthesia, and surgeries that PCA was applied were 0.6 times less likely to be delayed than those when it was not. Surgeries performed on the Thursday were 1.7 times more likely to be delayed than those performed on the Monday. Compared to surgeries performed between 07:00-07:59, those performed between 08:00-08:29 were 4.3 times higher. 3. The reasons for delay were related to surgeon, surgical department, patient, anesthesia, administrative system, sick ward, and support services. Among these, 5,755 minutes for 276 delayed cases could be resolved easily, and resolving delays of 3,320 minutes for 131 cases would be more difficult. Among the causes for delay that could be improved, delays due to patient's transfer and surgeon's factor were the most common, 21.6% and 17.4% respectively. 4. If resolvable delays are improved, pre-anesthesia room is administered, and regional anesthesia and PCA are done ahead of time, use of emergency operating rooms will increase, we can increase overall utilization by 4.09%, we will save 744 minutes a day, we can reduce the time the operation room is used after 4 PM by 35%, and we can resolve the operation cancellations due to insufficient operating rooms. For the increase in the use of operating rooms, we need to maximally decrease the delays that could be improved, by allocating block time based on used totals hours of elective cases, giving accurate information on surgery schedule, voluntary cooperation by staff participating in surgeries in reducing delay time, and the hospital management's will to improve delay.

• Journal of Korean Society for Quality Management
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• v.39 no.1
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• pp.155-166
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• 2011

In this research, we study on to find the inter-relation among education service quality and customer satisfaction and re-use focusing on E life-long education center. Education service quality consists of four factors such as training center's facility, trainer, employee's service and operating service. As like the results of this research, we found that three factors of education service quality such as facility, trainer and operating service give a positive effect to customer satisfaction and also we found that customer satisfaction gives a positive effect to re-use.

• The Korean Journal of Health Service Management
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• v.11 no.3
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• pp.1-11
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• 2017

Objectives : The purpose of this study was to analyze factors affecting the performance of public hospitals in South Korea. Methods : We collected management performance data from 2013 to 2015 from income statements, balance sheets, and annual reports from 32 local public hospitals. The dependent variable used was profitability, which included operating margin, return on assets and net profit to gross revenues. The independent variables were general characteristics, liquidity, stability, and activity. Results : Patient revenues, total assets, and total capital had increased steadily but patient expenses had increased to a greater extent. Operating profit, and net profit were consistently in deficits and the management status of local public hospitals had recently been in difficulty. The debt ratio, quick ratio, ratio of fixed liability and fixed assets turnover rate have a significant positive(+) effect on performance in the years 2013-2015. Conclusions : We suggest management strategies for these hospitals based on the results analyzed.