• Journal of Korean Academy of Nursing Administration
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• v.11 no.2
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• pp.195-207
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• 2005

Purpose: The purpose of this study was to confirm the change of nursing organizational characteristics and to define the difference of organizational outcome by measuring the organizational commitment and job satisfaction perceived by nursing staffs and patient satisfaction before and after organizational redesign. Method: The structured questionnaires of which contained organizational characteristics, organizational commitment and job satisfaction were developed from previous published studies after modification by researcher. The questionnaires were distributed to 1,200 and 679 nurses before and after nursing organizational change. patient satisfaction were measured before and after organizational change by direct interview with structured questionnaire from 1,566 and 1,291 patients. Results: 1. The organizational characteristics were significantly increased and the leadership of team leader and head nurse was significantly increased among the factors of organizational characteristics. 2. Organizational commitment was showed decreased tendency, but the difference was not significant. Job satisfaction was increased significantly and administration, autonomy, and job tasks were increased significantly in the factors of job satisfaction. Patient satisfaction was also increased significantly. 3. There was significant positive correlation between organizational commitment and job satisfaction and also job satisfaction and nursing organizational characteristics. All factors of organizational characteristics and satisfaction in present working unit were major factors to influence organizational commitment and explained 43.8% in a significant level by multiple regression analysis. The major factor which affect job satisfaction were the factors of nursing organizational characteristic except 'interaction with team leader' and satisfaction in present working unit among general characteristics and these factors explained 58.8% of job satisfaction. Conclusion: In conclusion, the nursing organizational change was very effective to bring about desirable change in nursing organizational characteristics and also to improve job satisfaction and patient satisfaction. Therefore the nursing productivity and comparability would be increased when the nursing organizational change is accomplished by the way of improving the factors of organizational characteristics and it would be followed by the promotion of job satisfaction and organizational commitment.

• Journal of Korean Academy of Nursing Administration
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• v.9 no.2
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• pp.233-241
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• 2003

Purpose : This comparative study was designed to compare job characteristics and job satisfaction in correctional nurses and hospital nurses. Methods : The participants for this study were 96 nurses (46 correctional nurses, 50 hospital nurses). The survey instruments included Job Diagnostic Survey(JDS) developed by Hackman & Oldman (1980) and amended by Lee(1997) and Index of Work Satisfaction(IWS) developed by Stamps and Piedmonte (1978) and amended Park & Yun (1992). Data were analyzed using of means, percentages, $x^2$ - test, t-test, Pearson correlation coefficient with SPSS program. Results : 1) Differences in job characteristics between correctional nurses and hospital nurses were not significant, but the mean score for correctional nurses' skill variety was significantly higher (t=-1.99, p<0.05) than hospital nurses 2) Differences in job satisfaction between two group were not significant, but the mean score for correctional nurses' pay satisfaction was significantly lower (t=-3.67, p<0.01.) than hospital nurses 3) There were significant negative correlations(r=-.544, p<.01) between correctional nurses' job characteristics and job satisfaction related to pay, but significant positive correlations (r=.331, p<.05) between job characteristics and professional status of job 4) There were significant positive correlations (r=.283, p<.05) between hospital nurses' job characteristics and job satisfaction, job characteristics and professional status of job (r=.530, p<.O1), and positive correlations between autonomy of job characteristics and job satisfaction (r=.522, p<.01). Conclusion : The results suggest a redesign of correctional nurses' job and improvement of outcomes. it is also recommended that job be done toward expanding and improving the reward system

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.7
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• pp.4849-4854
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• 2015

It has been often occurred for the outside components(BU, SVaC, DB) of UM71c AF track circuits to be broken down caused by some pieces of falling ice in the winter time or by infrastructure repairing equipments while facility maintenance works since 2004, opening of Kyeongbu High Speed Rail Express. In this paper, we proposed that we could move the outside components of UM71c track circuit out of wayside from present place. Then we can assure that the life time of those components would be extended. So we simulated the electrical characteristics by changing cable length using MATLAB Simulinks and we designed the compensation capacitor. Also, we obtained the same results as those of simulation by field demonstration test on site. The design specifications obtained from this field verification test could be applied in the absent section of track circuit, if only have a little more intensified research to compensate changed electrical characteristics and to redesign inner impedance of the track circuit.

• Journal of Convergence for Information Technology
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• v.7 no.1
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• pp.75-79
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• 2017

The purpose of this paper is to propose a method for business process system (BPS) based on the Internet of Things (IoT). As the results of this research the IoT architecture and the business process design are derived. The main findings include the proposed IoT-enabled BPS method, illustrated by the description of the application and its assessment. In addition, the key business processes namely; remote machine monitoring; maintenance of machine; material procurement; product pricing; and information reporting system, are affected by IoT technology. The proposed method of this research could be the reference for the companies which want to have better management performance based on IoT technologies.

• Transactions of the Korean Society of Mechanical Engineers
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• v.18 no.3
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• pp.768-776
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• 1994

This paper describes computer-aided forging design for rib/web shaped parts. In manufacturing a part by means of forging process, the first step is to design the forging. This is done by modifying the given machined part geometry according to the requirements of the forging process. Traditionally, this is done by experienced forging designers using empirical forging design guidelines. Generally, it would be neither possible nor practical to develop a system which encompasses the design of all types of forgings. Accordingly, forging design can be simplified by considering critical two dimensional cross sections of the machined part geometry. This system is composed of three modules(process variable decision module, forging design module and redesign module) and each module is carried out in regular sequence. In the process variable decision module, first of all, the undercut is checked and modified, and then deep recesses and holes difficult to forge are eliminated. Also parting line, forging plane, forging plan view area, forging weight and maximum size(maximum height or width)are determined. In the forging design module, the magnitude of various allowances, draft angle, minimum web thickness, corner and fillet radius are determined and then geometry modification is performed. Finally, since the design rules and databases used in this system are based on parameters of the forging geometry, such as the trimmed forging plan area, forging weight, forging maxmum size, plausible estimates need to be made for these parameters. Therefore, in the re-design module, the design process is iterated until a satisfactory forging is obtained.

• The Journal of Engineering Geology
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• v.19 no.3
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• pp.345-350
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• 2009

The endpoint of the Yangbuk tunnel constructed at the national road between Gyeongju and Gampo is composed of massive cutting because the road is driven through the sides of mountain. PAP(Prestressed Anchor and PC Pannel) retaining wall as a slope stability method was established over this section. Part of the anchor in PAP wall became broken after six months. We performed inverse analysis through its measurements obtained until that time. An geological investigation to confirm the condition of ground layering and the attraction force test to find as to whether some errors might be present in the anchor were made. According to the back analysis, it was turned out that the value with soil parameter 90% that was applied to the original design was pertinent. In the redesign, the permissible stress in the anchor body was changed from 306 kN to 591 kN and 784 kN and the fixation position was increased from 11.0 m to 23.0 m. Nevertheless, five months have passed since the exchange of the anchor, the measurement results validate that stable state has been maintained. This research is considered a case that the immediate maintenance helps prevent the slope accidents.

• Journal of the Korean Institute of Landscape Architecture
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• v.32 no.1
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• pp.33-46
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• 2004

This study is aimed to redesign established parks and to propose a series of devices protecting them from vandalism. To solve the problems, we ascertained the damaged areas of the park greens. The trace analysis was performed to grasp the transverse inside the parks of Jeonju and Iksan in Collabuldo. Then, we presented the basic plan for minimizing park damage and for remodeling the system of movement. The results of the study are summarized as follows: it is identified that the transverse phenomenon is considerably wide-spread in majority of parks, and has no relationship to the park area or the green area. It is considered that the $\ulcorner$Condition rating class$\lrcorner$ of grass damage, which is grade 6, is extraordinarily high and the damage is accumulated considerably. Also, the damage part of other grade is discovered equally, and when unattended, the acceleration of damage is positive. A damage width a 0.5∼1.5m makes up the greater part of 79.6%. It also constitutes most of a rectilinear form. The difference in the height between the original point and destination point is below 0.7m, which is above 70%. It is identified that the interrelationship between the damage continuation length and plan distance is relatively high by the simple regression: analysis and by Pearson' correlation analysis. In spite of the normal damage continuation length is 20m, the frequency degree is downward with extreme point at 10m. Accordingly, it is assumed that park users have physical and psychological pressure when they cross the lawn field. Damage types are classified as the Simple cut cross type, the Behavioral facilitates type, Access advantage type and the Strolling type through type classification. It is considered that this classification is effective when identifying short pass type on lawn field according to the damage length and intensity.

• Journal of the Korean Institute of Intelligent Systems
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• v.12 no.4
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• pp.311-316
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• 2002

Difficulties of the level control in the steam generator are increased due to their nonlinear characteristics. Futhermore, parameter uncertainties of the steam generator is related with control performance and stability. The efficiency of digital conversion in control systems is proved in many recent researches. In order to solve this problem, this paper suggests robust digital fuzzy controller design methodologies of the steam generator which have unstable parameters. Takagi-Sugeno (TS) fuzzy model is used to construct a fuzzy model which has uncertainties in the steam generator. In designing procedure, intelligent digital redesign method is used to control the nonlinear system. This digital controller keeps the performance of the analog controller. Simulation examples are included for ensuring the proposed control method.

• Journal of Korean Academy of Nursing Administration
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• v.2 no.1
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• pp.5-15
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• 1996

The purpose of this study is analysis of the relationship between autonomy and group cohesiveness perceived by nurses and their job satisfaction, organizational commitment, motivation and intend to stay on jobs to develope the nursing staff management. The results are as follows: 1. Characteristics of subjects are not significantly different in perceived autonomy, but group cohesiveness, organizational commitment and intend to stay on jobs are different in nursing unit(p<.05). Educational background is significantly different in job satisfaction: nurses who has diploma show higher scores than who has baccalaureate degree(p<.05). 2. Perceived autonomy is related with job satisfaction, motivation and intend to stay on jobs but is not related with organizational commitment(p<.05). 3. Group cohesiveness perceived by nurses is significantly related with job satisfaction, organizational commitment motivation and intend to stay on jobs and their correlation coefficients are higher than that of perceived autonomy(p<.05). 4. The interaction effect of autonomy and group cohesiveness with all dependent variables is not significant(p>.05). The main effect on all dependent variables is presented as group cohesiveness. 5. The canonical correlation coefficient of independent variables and dependent variables is 0.503(p<0.000). The above results are important in the aspect of the development of strateges for retension of qualified nurses performing quality of nursing care and organizational efficacy. Autonomy and group cohesiveness perceived by nurses are important factors in nursing staff management; the further studys on job redesign and intervention strateges for enhancing group cohesiveness are needed.

• The KSFM Journal of Fluid Machinery
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• v.4 no.1 s.10
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• pp.7-13
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• 2001

In developing a multistage compressor, the stage matching is one of the critical design issues. The mismatching can be often observed even if each stage has been proven good and then used as part of a compression system. A good matching among the stages can be achieved by changing various design parameters (i.e., passage cross sectional areas, blades angles, stagger angles, curvature, solidity, etc.). Therefore, designers need to find out what parameters must be changed and how much. In this study, a method to search the design parameters for optimum stage matching has been used based on an 1-D mathematical model of a compressor, which uses the data obtained from the preliminary test to identify the design parameters. This methodology is applied with a two-stage axial compressor, which was originally designed for a helicopter gas turbine engine. After identifying design parameters using preliminary test data, an optimization process has been employed to achieve the best matching between the stages (i.e., maximum efficiency of the compressor at its operation modes within a given range of the rotor speed under given restrictions for required stall margins and mass flow). 3-D flow calculations have been performed to confirm the usefulness of the corrections based on the 1-D mathematical model. Calculational results agree well with the experimental data in view of the performance characteristics. Some promising results were produced through the methodology proposed in this paper in conjunction with flow calculations.