• The Korean Journal of Pain
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• v.9 no.1
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• pp.178-182
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• 1996

Background: To evaluate the effect of prophylactic transdermal scopolamine in reducing nausea associated with postoperative epidural morphine. Methods: 30 healthy patients scheduled for cesarean section were given local anesthetics epidurally for surgical anesthesia. After delivery of the baby, transdermal scopolamine patch($Kimite^{(R)}$ Myung Moon Pharm. Co., Seoul, Korea) was applied to the study group(n=15) and placebo patch to the control group(n=15). Postoperative analgesia was provided soley with epidural morphine. Nausea was treated with metoclopramide. Results: During 24 hours postoperatively, the mean nausea score was significantly lower in the study group than in the control group. But the nausea incidence was not significantly different between the two groups. The mean number of times antiemetic drugs which were administered to patients were lower in the study group than in the control group($1.5{\pm}0.5$ vs $3.3{\pm}1.3$, p<0.05). Conclusion: Transdermal scopolamine patch provides antiemetic effect simply, continuously and safely, preventing nausea which could occur during administration of epidural morphine after cesarean section.

• Journal of the Korean Operations Research and Management Science Society
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• v.28 no.2
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• pp.75-89
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• 2003

Media Access Control (MAC) Protocol in IEEE 802.11 Wireless LAN standard supports two types of services, synchronous and asynchronous. Synchronous real-time traffic is served by Point Coordination Function (PCF) that implements polling access method. Asynchronous nonreal-time traffic is provided by Distributed Coordination Function (DCF) based on Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) protocol. Since real-time traffic is sensitive to delay, and nonreal-time traffic to error and throughput, proper traffic scheduling algorithm needs to be designed. But it is known that the standard IEEE 802.11 scheme is insufficient to serve real-time traffic. In this paper, real-time traffic scheduling and admission control algorithm is proposed. To satisfy the deadline violation probability of the real time traffic the downlink traffic is scheduled before the uplink by Earliest Due Date (EDD) rule. Admission of real-time connection is controlled to satisfy the minimum throughput of nonreal-time traffic which is estimated by exponential smoothing. Simulation is performed to have proper system capacity that satisfies the Quality of Service (QoS) requirement. Tradeoff between real-time and nonreal-time stations is demonstrated. The admission control and the EDD with downlink-first scheduling are illustrated to be effective for the real-time traffic in the wireless LAN.

• Journal of Korean Academy of Nursing Administration
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• v.22 no.4
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• pp.373-383
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• 2016

Purpose: This study was conducted to develop a resilience training program for nurses and test its effects. Methods: A non-equivalent experimental group and a control group pretest-posttest study design was used with 56 participating nurses (28 nurses in the experimental group and 28 nurses in the control group). The resilience training program was provided to participants for 4 weeks from August 12 to September 4, 2013. Each session was scheduled for two hours per week. Participants completed the tools for resilience, positive affect, and perceived stress assessment. Data were analyzed using ${\chi}^2$ test, Independent t-test, and 2*2 repeated measures multivariate analyses of variance (MANOVAs) with the SPSS/WIN 21.0 program. Results: Application of the resilience training program significantly helped nurses enhance their resilience and positive affect to workplace adversity, and reduce their perceived stress. There were significant positive differences for these variables in the experimental group compared to the control group. Conclusion: The findings indicate that the resilience training program for nurses is effective and can be used as an intervention for a stress management guide for nurses.

• Journal of the Korea Safety Management & Science
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• v.12 no.2
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• pp.225-230
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• 2010

The purpose of the study was to apply and to expand the six sigma to reduce waiting times for computed tomography (CT) examination which manipulated by the department of radiology. It was preceded by DMAIC (Define, Measure, Analyze, Improve, and Control). In the stage of definition, it wereselected for total 5 critical to quality (CTQ), which were the kindness, the waiting time, the examination explanation, the waiting day and the waiting stand environment, that increased the reserved time of CT examination. In the stage of measurement, the number of examinations and of reservation waiting days performed and resulted in final CTQ(Y) which measured each 1.68 and 1.85 sigma. In the stage of analysis, the examination concentrated on morning time, non-scheduled examination of the day, the delayed time of booking, frequent telephone contacting and equipment malfunction were determined as variable key causes. In the stage of improvement, it were performed with expansion of the examination in the morning time, integration of laboratories that used to in each steps, developing the ability of simultaneous booking schedule for the multiple examinations, developing program of examination request, and the customer management team operations. For the control, the number of examinations and reserved waiting days were measured each 3.14 and 1.13 sigma.

• Journal of the Korean Society of School Health
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• v.28 no.1
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• pp.22-30
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• 2015

Purpose: The purpose of this study is to survey on the influence of the laughing program on elementary school students' self-esteem and stress coping behaviors. Methods: In total, 43 children (grade 4~6 students) were recruited for self administered questionnaire. Questionnaire was composed of general characteristics, self-esteem, and stress coping behaviors. Ten week course of laughing program was scheduled to the Experimental group, meanwhile no program was given to the control group. Results: The median self-esteem scores in the experimental group was increased from 30.05 to 34 (Z=-2.375, p<.05). Meanwhile control group did not show significant change. The median inactive/avoidant coping scores in the experimental group was decreased from 10 to 9 (Z=-2.028, p<.05). Meanwhile control group did not show significant change in any items of stress coping behaviors. Conclusion: Laughing program may be helpful to improve stress coping behaviors through reducing inactive/avoidance coping as well as to strengthen self-esteem, especially among participants who had low self-esteem before the intervention.

• Journal of muscle and joint health
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• v.15 no.1
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• pp.88-95
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• 2008

Purpose: This study was to evaluate and compare the effectiveness of the Resistance Exercise Program on pain, stiffness, ADL and bone mineral density in Arthritis Patients at home. Methods: Forty-two patients participated in this study and they were divided randomly into two groups (exercise and control group). Two subjects dropped during the study period. The exercise group had a structured training which was 50 minutes in duration, five times per week for a period of 16 weeks and the control group without any scheduled treatment. Data were gathered for 16 weeks (May 21, 2007- September 10, 2007) and were analyzed by using SPSS Win 12.0. Results: The pain, stiffness, ADL, balance and bone mineral density in the exercise group were improved significantly after the Resistance Exercise Program. However, a significant improvement on the above mentioned variables was not observed in the control group.

• Journal of Korean Academy of Nursing
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• v.48 no.6
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• pp.708-719
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• 2018

Purpose: This study was conducted to examine the effects of a communication empowerment program based on situated learning theory for nursing students. Methods: A non-equivalent control group pretest-posttest design was used. The study participants were 61 nursing students (31 in the experimental group and 30 in the control group) from G city. Data were collected from November 3, 2015 to December 10, 2015. The experimental group received eight sessions of the program, which were scheduled twice a week, with each session lasting two hours. The data were analyzed using chi-square test, Fisher's exact test, and an independent t-test using SPSS/WIN 20.0. Results: There were significant increases in self-efficacy for communication (t=2.62, p=.011), emotional intelligence (t=2.66, p=.010), and interpersonal communication competence (t=2.87, p=.006) in the experimental group compared to the control group. Conclusion: Based on the findings, our study suggests a need to include content from communication curricula or clinical communication training programs for improving undergraduate nursing students' communication skills in practice settings.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.43 no.1
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• pp.143-150
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• 2020

To enhance the effectiveness of the FMS (flexible manufacturing system), it is necessary for the manufacturing control system to be upgraded by integrating the cyber and the physical manufacturing systems. Using the CPPS (Cyber-Physical Production System) concept, this study proposes a 4-stage vertical integration and control framework for an aircraft parts manufacturing plant. In the proposed framework, the process controller prepares the operations schedule for processing work orders generated from the APS (advanced planning & scheduling) system. The scheduled operations and the related control commands are assigned to equipments by the dispatcher of the line controller. The line monitor is responsible for monitoring the overall status of the FMS including work orders and equipments. Finally the process monitor uses the simulation model to check the performance of the production plan using real time plant status data. The W-FMCS (Wing rib-Flexible Manufacturing Control & Simulation) are developed to implement the proposed 4-stage CPPS based FMS control architecture. The effectiveness of the proposed control architecture is examined by the real plant's operational data such as utilization and throughput. The performance improvement examined shows the usefulness of the framework in managing the smart factory's operation by providing a practical approach to integrate cyber and physical production systems.

• Journal of Institute of Control, Robotics and Systems
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• v.20 no.2
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• pp.223-231
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• 2014

Humanoid robot is the most suitable robot platform for effective human interaction and various intelligent services. The present work addresses development of real time wireless control application of humanoid robot's forward and backward walks, and turning in walking. For convenience of human users, the application is developed on Android OS (Operating System) working on his or her smartphone. To this end, theoretic background on various-directional biped walking is proposed based on joint trajectories for forward walking, which have been shaped with a global optimization method. In this paper, backward walking is scheduled by interchange of angles and angular velocities and additional change of signs in angular velocities at all the via-points connecting cubic polynomial trajectories. Turning direction in walking is also implemented by activating the transversal hip joint initially located in the support leg in two stages. After validation of the proposed walking schemes with Matlab simulator, a smartphone application for the omnidirectional walking has been developed to control a humanoid robot platform named DARwIn-OP interconnected via Wi-Fi. Experiment result of the present wireless control of a humanoid robot with smartphone is successful, and the application will be released in application market near future.

• Journal of the Korea Society of Computer and Information
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• v.4 no.1
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• pp.7-14
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• 1999

In this paper, we deals with operator allocation and binding in high-level synthesis. We proposed a new methode to allocation and bind for scheduled operations on each control step after scheduling. Especially, we take account ILP formulation in order to get optimal allocation and binding result. Experiment was done on the HAL DFG model of Differential Equation, to show it's effectiveness.