• Transactions of the Korean Society of Mechanical Engineers
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• v.19 no.4
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• pp.1023-1032
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• 1995

The multiple cooperating robot system plays an important role in the research of modern manufacturing system as the emphasis of production automation is more on the side of flexibility than before. While the kinematic and dynamic analysis of a single robot is performed as an open-loop chain, the dynamic formulation of robot in a multiple cooperating robot system differs from that of a single robot when the multiple cooperating robots form a closed kinematic chain holding an object simultaneously. The object may be any type from a rigid body to a multi-joint linkage. The mobility of the system depends on the kinematic configuration of the closed kinematic chain formed by robots and object, which also decides the number of independent input parameters. Since the mobility is not the same as the number of robot joints, proper constraint condition is sought. The constraints may be such that : the number of active robot joints is kept the same as mobility, all robot joints are active and have interrelations between each joint forces/torques, two robots have master-slave relation, or so on. The dynamic formulation of system is obtained. The formulation is based on recursive dual-number screw-calculus Newton-Eulerian approach which has been used for single robot analysis. This new scheme is recursive and compact symbolically and may facilitate the consideration of the object in real time.

• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• v.21 no.2
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• pp.63-71
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• 2015

Background: The purpose of the study, using the ICF Tool in the process of rehabilitation of artificial joint replacement surgery of the hip joint, goal setting and understanding of the problem, through the process of creating intervention strategies, useful clinical practical course for rehabilitation I try to present the data. Methods: Fracture was the left total hip replacement (THR) surgery due to women of 76 years old. I proceed in order screening, evaluation, diagnosis, prognosis, treatment planning and intervention, re-screening. Needs of the patient was walking short distances for using the toilet. In order to improve was carried out arbitration, after you have created a list of issues that limit the ability to walk short distances. Results: It was revealed improved results in self-paced walk test (SPWT) and Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) was used to examine whether the goals. In addition, MMT VAS, DGI, and TUG is a detailed goal was improved. Conclusions: It can be shown objectively the results of interventions performed for the purpose of solving the problem which is grasped through clinical Practical course for short-range walking ability enhance patient THR. I considered practical clinical course using the ICF Tool would be useful.

• Proceedings of the KWS Conference
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• 2005.11a
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• pp.82-84
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• 2005

Fatigue assessment of welded structure is very sensitive to the method of local stress determination. Normally, hot spot stress which is surface stress extracted from 0.5t, 1.5t away from weld toe is widely used to obtain local stress. However, this method has a lot of limitation in the evaluation of fatigue strength. Therefore, mesh has to comply with strict requirements since stress extracted from this method strongly rely on mesh size and element types. And that method does not cover the stress gradient through thickness direction since only surface stress is considered. Recently, new method to obtain local stress is proposed, which is structural stress. This method has an advantage, which is mesh intransitiveness and covering the effect of both bending and axial stress in local area. In this paper, fatigue test data for various welded joints was analyzed to review the reliability of structural stress. As a result, it is verified that S-N curve using structural stress guaranteed single master curve for various joint type and testing condition.

• Journal of muscle and joint health
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• v.25 no.3
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• pp.205-217
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• 2018

Purpose: The purpose of this review was to analyze the characteristics and effectiveness of online-based intervention for infertile women. Methods: We established the PICO (Participant-Intervention-Comparison-Outcome) strategy and conducted a systematic review of 7 literatures retrieved from 3 electronic databases of Ovid-Medline, Ovid-Embase, and the Cochrane Library. Two investigators independently extracted the data and assessed the quality of included studies using Cochrane risk of bias. Results: The pregnancy outcome showed that higher total risk scores (TRS) about lifestyle behavior was significantly associated with lower chance of pregnancy (aHR 0.79, 95% CI 0.72~0.85). Stress was significantly decreased in experimental groups receiving online-based interventions (p<.05). Depression score was significantly lower in groups receiving additional interventions besides on-line interventions than those who used online-based intervention only. The other outcomes, including anxiety, self-efficacy, helpfulness of intervention, perceived social support, and knowledge scores were not significantly different within and between groups in overall. Characteristics of the interventions were heterogeneous. Conclusion: There is evidence that online-based intervention in infertile women enhances the pregnancy and reduces stress levels.

• Journal of muscle and joint health
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• v.29 no.3
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• pp.176-184
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• 2022

Purpose: This study attempted to examine the degree of nursing professionalism, job stress, nursing work environment, and person-centered care of clinical nurses, and also to identify the relationship between the variables and the factors affecting person-centered care. Methods: Participants included 162 nurses with a clinical experience of six months or more, who have worked at hospitals with more than 500 beds in Gangwon Province. Results: Person-centered care showed a statistically significant positive correlation with nursing professionalism (r=.43, p<.001) and nursing work environment (r=.34, p<.001). The adjusted R² was 0.266, indicating that the measured variables explained 26.6% of the variance in person-centered care. Nursing professionalism had the greatest impact on person-centered care among clinical nurses (β=.37, p<.001), followed by job stress (β=.21, p=.005), nursing work environment (β=.19, p=.007), and master's or higher degree (β=.15, p=.036). Conclusion: The findings show that four factors affect person-centered care: nursing professionalism, job stress, nursing work environment, and education level. For clinical nurses to provide high-quality person-centered care, it is necessary to strengthen nursing professionalism, address job stress and improve nursing work environment.

• Journal of muscle and joint health
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• v.16 no.2
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• pp.145-153
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• 2009

Purpose: The effects of aroma massage on pain, activities of daily living, and fatigue were investigated in the patients who have knee osteoarthritis. Method: A quasi-experimental design with non-equivalent control group pretest-posttest measures was used. Twenty one and twenty subjects were included in control and experimental group, respectively. Subjects in experimental group had aroma massage which used lavender, chamomile, and ginger oil on painful knee. They were encouraged to implement aroma massage at least two times a day for 2 weeks. Subjects in the control group had conventional oil massage implementing by exactly same method as did in the experimental group. GRS(graphic rating scale), Korean version of WOMAC (Western Ontario and McMaster) osteoarthritis index, and MAF(multidimensional assessment of fatigue) were used to measure the outcome variables such as pain, activities of daily living and fatigue, respectively. Results: After 2 weeks, those in the experimental group reported significantly less pain and fatigue and better activities of daily living than those in the control group. Conclusion: Based on these results, aroma massage could be recommended as a self managed intervention for the patients with knee osteoarthritis.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.19 no.4
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• pp.91-98
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• 2011

Korea's aerospace industry tries to achieve the exports goal in 2020, 10 billion dollars, in accordance with the "Future aviation industry development master plan", but it's skill is still not keeping pace. To secure and improve the appropriate technology, it is desperately needed to cooperate with advanced countries or companies of aerospace industry, but they are liked to manage their technology transfer or demand tremendous high price. This study presents that Russia could be a another nation which is able to cooperation on aerospace industry. Although Russia had have superior technology in aerospace industry, they have lost the competitiveness on that field after the collapse of the Soviet Union. Now, they are trying to regain their original fame in the commercialized way. So, this study suggests practical ways which South Korea and Russia may be helpful each other based on experiences working together.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2007.05a
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• pp.374-378
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• 2007

As people's living standard is being improved, human works are being replaced by robots. However, because roost robots are used in process industry, fixed on the ground, we need to develop human robots that have wide applications. Currently many researches are being conducted on human robots with the object of replacing human works, but because of lack of relevant hardware, such robots are being applied limitedly to very simple tasks. To overcome the limitation, the present study developed a kinematical mechanism and a controller. Based on human kinematics, the shoulders and the arms were composed of master arms with 3 degree of freedom, and we reproduced motions similar to human ones through the characteristics of joint variables and experiment on the trajectory of the end effector.

• Journal of the Korean Institute of Landscape Architecture International Edition
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• no.1
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• pp.53-58
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• 2001

The study made a comparison of the draft making process and implementation of open spaces in Japan and China, and pointed out the issues to be solved. In summary, we discovered that the Japanese plan emphasizes joint conduct and cooperation between residents and corporation/organization, while the Chinese plan is characterized by its active usage of administrative lines. Regarding the policies of their plans, there are many similarities in the basic issues for both countries. The study clarified the differences in measures responding to geographical and systematic features of each country.

• Journal of TMJ Balancing Medicine
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• v.13 no.1
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• pp.27-31
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• 2023

The purpose of this case report is to introduce a case of immediate results with TMJ balancing therapy (TBT) in the treatment of chronic patellofemoral pain (PFP). A 17-year-old female patient with 4-month-old chronic knee pain that was unresponsive to conventional treatment was treated with TBT for a total of 5 sessions. The primary outcomes were evaluated using the Numeric Rating Scale (NRS) and the Korean version of the Western Ontario and McMaster Universities Osteoarthritis Index (KWOMAC). Following the first treatment, the NRS decreased rapidly, and the KWOMAC improved after a total of five treatments. These findings suggest that TBT can be an effective pain management option for chronic PFP patients with temporomandibular joint malposition. However, as this study is a report of a single case, further research is necessary.