• Proceedings of the Korea Institute of Convergence Signal Processing
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• 2000.08a
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• pp.145-148
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• 2000

Nowadays there are lots of researches on robot systems working on danger environments and control led remotely. In this paper, we describe a virtual robot interface system based on Internet In the system, a client can order scanning for range finding, then server detects a 3D profile data from the objects by using robot controlling and a range finder automatically. If one clicks the original position of object and destination on virtual space, the robot moves the object to the new position in real space. The proposed interface system supports advanced virtual 3D interface and makes it possible one to manage the objects remotely more conveniently.

• 제어로봇시스템학회:학술대회논문집
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• 2001.10a
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• pp.53.2-53
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• 2001

The Non-Contact Optical Sensor using the Hologram Laser for CD Pickup was developed to measure a shape of transparent objects and shown a good performance. Therefore the problems caused by the contact sensor are solved by using the Non-Contact Sensor. The Non-Contact Sensor has to move toward the objects and obtain the Focus Error Signal to measure a position of transparent objects. However, if the distance between the sensor and the object is shorter than the working distance of the objective lens, the sensor will be collided against the objects. In this paper we proposed a new algorithm to estimate the start position of the Focus Error Signal to solve the problems of collision between the sensor and the objects. In addition, we verified that the algorithm is free from the collision in the real time measurement.

• The Korean Journal of Archival Studies
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• no.9
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• pp.143-163
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• 2004

This study is for why Korean private universities make high position and performance on their archives. It's needless to say that archives of university is desperate for democratic management, historic and cultural identity and administrative efficiency. As for archives of private university, it has to be set by its own organization as the name of '00 university archives' if possible. At the same time both 'administrative structure' and 'working-level structure' should be activated for the better output. It might be helpful to empower itself. Archives of private university have to fulfill these basic role; aquisition, arrangement, classification, preservation etc./service/study of archival science /university history compiling. It could be expand to the link between university and local community, open class and digital archive service.

• Proceedings of the KSME Conference
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• 2007.05b
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• pp.2747-2752
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• 2007

A numerical study has been performed on the flow past a two-staged orifice in a rectangular duct. The flow field including the recirculation region behind the orifice was investigated and the pressure drop was calculated. Water was used as a working fluid and the flow was treated as the turbulent flow, of which the Raynolds number was 6000. The main parameters for the pressure drop and the recirculation region were the orifice's inclined angle against the duct, the interval between two orifices, the shape of the orifice's hole having the same area, and the change of the hole position at the same interval. The variation of the flow field was investigated with each parameter. Consequently, it was found that the most dominant parameter influencing the drop of the pressure was the change of the hole position at the same interval between orifices. Especially when the interval between orifices was narrow and the relative position the holes was changed, its effect to the flow field was shown most drastically as a result of this study. The SIMPLER algorithm with FLUENT code was employed to analyze the flow field.

• Journal of the Korean Institute of Telematics and Electronics T
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• v.36T no.1
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• pp.64-70
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• 1999

When manipulator moves the objects, the object position error can be occurred because of acceleration or negative acceleration according to the direction. So we make manipulator working path for establishing optimal gripper force control preventing occurrence of object position error. And we attached the tactile sensor on the gripper of manipulator which gives us very specific information between manipulator and object. Reasoning of continuous tactile image data, manipulator can sense rotation and slippage and change the grasping force that corrects calculated grasping force and compensation can be possible of the object position error. We use the FSR(Force Sensing Resistor)sensor which consists of 22 by 22 taxels and continuous taxel number is used for filtering and using the moment method for sensing algorithm in our experiment.

• Journal of Korean Academy of Nursing Administration
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• v.12 no.1
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• pp.122-130
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• 2006

Purpose: This study was performed to examine the level of reward's importance and job satisfaction perceived by nurses, understand how nurses' demographics, reward and reward's subcategories affected their job satisfaction. Method: The data were collected at the six general hospitals in five cities, Korea from July 15th to August 26th, 2005. Two questionnaires were used. One was the important level of reward and the other was job satisfaction. The data were analyzed by SPSS/PC ver 12.0. Result: The average scores of reward and job satisfaction were $3.77({\pm}.34)$ and $2.80({\pm}.32)$ of 5.0 that was full mark. In differences of the important level of reward, marital status was the only different characteristics. In differences of job satisfaction, age, education level, working period, and position had differences significantly. Among the job satisfaction and the reward's subcategories, there was the only significant correlation between the job satisfaction and the job contentment reward. And nurses' job contentment reward and position explained 40.5% of their job satisfaction Conclusion: Nurses' job contentment reward and position should be first considered in order to improve their job satisfaction. Since nurses' job contentment reward is the most important factor to improve their job satisfaction, a special strategies that can develop their job contentment reward is needed to nursing managers.

• Journal of the Korean Society of Manufacturing Technology Engineers
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• v.19 no.1
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• pp.15-25
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• 2010

The objective of this study is to investigate the optimal arrangement of cameras used for the robot's vision control scheme. The used robot's vision control scheme involves two estimation models, which are the parameter estimation and robot's joint angle estimation models. In order to perform this study, robot's working region is divided into three work spaces such as left, central and right spaces. Also, cameras are positioned on circular arcs with radius of 1.5m, 2.0m and 2.5m. Seven cameras are placed on each circular arc. For the experiment, nine cases of camera arrangement are selected in each robot's work space, and each case uses three cameras. Six parameters are estimated for each camera using the developed parameter estimation model in order to show the suitability of the vision system model in nine cases of each robot's work space. Finally, the robot's joint angles are estimated using the joint angle estimation model according to the arrangement of cameras for robot's point-position control. Thus, the effect of camera arrangement used for the robot's vision control scheme is shown for robot's point-position control experimentally.

• Journal of the Korean Society for Precision Engineering
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• v.22 no.12 s.177
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• pp.77-86
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• 2005

This paper is about the development of Automatic FPC(flexible printed circuit) punching instrument for the improvement of working condition and cost saving. FPC is used to detect the contact position of keyboard and button like a cellular phone. Depending on the quality of the printed ink and position of reference punching point to the FPC, the resistance and current are varied to the malfunctioning values. The size of reference punching point is 2mm and the above. Because the punching operation is done manually, The punching accuracy is varied with operator's condition. Recently, The punching accuracy has deteriorated severely to the 2mm punching reference hall so that assembly of the K/B has hardly done. To improve this manual punching operation to the FPC, automatic FPC punching system is introduced. Precise mechanical parts like a 5-step stepping motor and ball screw mechanism are designed and tested and low cost PC camera is used fur the sake of cost down instead of using high quality vision systems for the factory automation. Test algorithms and programs showed good results to the designed automatic punching system and led to the increasement of productivity and huge cost down to law material like FPC by avoiding bad quality.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2007.12a
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• pp.255-256
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• 2007

In case of inappropriate stacking position of the container taking in container yard, the working time for the container would be delayed in taking out because of the occurrence of the re-handle and the increase of the crane moving time. We have to take into account a variety of elements like the crane interference, the container group and stacking height in order to determine the optimal stacking position and decide the weight reflecting the importance of these criteria. We propose the dynamic weight adjustment algorithm for the stacking policy criteria employing the online search in this research.

• Journal of Korean Academy of Nursing Administration
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• v.16 no.4
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• pp.507-516
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• 2010

Purpose: The purposes of this study were to understand the general hospital nurses' work stress, burn out and turnover intention and to identify the factors that influence on turnover intention. Methods: This study was conducted through a survey of 283 nurses having at least 6 months of work experience of 4 general hospitals in Seoul. Data were collected from September to October 2009. The data were analyzed using descriptive statistics, ANOVA, and stepwise multiple regression test with SPSS WIN 14.0. Results: The score for turnover intention was 3.57 out of 5. Turnover intention was significantly correlated with work stress, burn out, and working position. The factors influencing turnover intention were organizational system, depersonalization, physical environment, work position, and occupational climate. The predict variables accounted for 27.9% of turnover intention. Conclusion: The results of this study show that factors influencing turnover intention are organizational system, depersonalization, physical environment, work position, and organizational climate. Therefore, nursing managers should understand the organization's climate and establish a reasonable organization system to decrease turnover intention.