• Proceedings of the Korea Electromagnetic Engineering Society Conference
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• 2000.11a
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• pp.75-78
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• 2000

Since the most of malfunctions in the industrial equipment controlled by processors is occured by the Electrical Fast Transient(EFT), the International Electrotechnical Commission(IEC) prepared the dummy signal to test the immunity level of the equipments. In this paper. we designed a new EMC filter for power line in break-box, which is consist of the feed-through capacitor and ferrite materials with high permeability which was wound or inserted in the second layer of the power cable in order to increase common mode inductance. We have obtained a excellent insertion loss characteristics over wide frequency band from 100 KHz up to 6 GHz. It is expected that the new EMC filter could be effectively used for industrial, MIL, and medical equipments to reduce a malfunctions and be suitable for IEC 61000-4-4.

• Physical Therapy Korea
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• v.7 no.4
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• pp.65-71
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• 2000

Recently, we can see worldwide the rapid increase in the population of the aged people, while that of young people is decreasing. Especially present Japan has a super-aged society, and it is a big social problem how to take effective measures to that in the future, Some items as well as researches have come out of various research them to the user. Such a change in population will be seen also in South Korea. Because South Korea has many social things in common with Japan, though they have different languages. Through this report, it is expected that it will be a good example for Japan PT to expand its activities and will connect to the future joint research of South Korea and Japan, by introducing it to South Korea.

• Journal of electromagnetic engineering and science
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• v.1 no.1
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• pp.100-104
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• 2001

Since the most of malfunctions in the industrial equipment controlled by processors is consist of the electrical fast transient (EFT)$^{[1],[2]}$TEX>, the International Electrotechnical Commission (IEC) prepared the dummy signal to test the immunity level of the equipments. To work out a countermeasure for the malfunction, We designed a new electromagnetic compatibility (EMC) filter for high power supply, which is consisted of a feed-through capacitor and ferrite materials with high permeability. The ferrite material is surrounded with a power cable or is inserted on the cable’s second layer in order to increase common-mode inductance. We have obtained a excellent insertion loss characteristics over the frequency band from 150 kHz to 30 MHz. The developed new EMC filter satisfy IEC 61000-4-4 and is suitable for industrial, militaly, and medical equipments with reduced malfuntions.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.27 no.3
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• pp.43-49
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• 2013

Recently harmonics flowing into power system is increasing as the usage of semiconductor equipments and switching mode power equipments are increasing. Harmonics cause problems such as heat increasing and reduction in capacity of transformers, especially the harmonics flowing into a distribution transformer can lead to the lifetime reduction of transformer. In this paper, we are about to develop a device that can monitor harmonics in real-time as it is affixed to a distribution transformer. Unlike the existing expensive harmonic analysis device, a new harmonic analysis algorithm is proposed in order to implement low-cost equipment. The real-time harmonic analysis algorithm proposed in this paper allows implementation on low performance microcontrollers, thus it can monitor the harmonic in real-time as it is individually affixed to the transformer. Therefore, it would improve the reliability of the transformer and stable power system operation would be possible as it can prevent the transformer accidents in advance.

• Journal of Society of Preventive Korean Medicine
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• v.16 no.3
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• pp.75-87
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• 2012

Objectives : This study was performed to investigate the knowledge on contacting experiences to foreign patients, the equipments and requirements to make the vitalization method for the oriental medical tourism for foreign patients. Methods : We adopted the focusing group interviews on the oriental medical doctors, nurses and personnels who had the experiences to deal with the oriental medical tourism. Results : For 3 parts, translation into each country's language in program, hospital information, treatment information and homepage should be done and consideration into each country's culture is very important part to know medical tourism patients and prepare the adequate products, and lastly the translater or medical coordinator plays a very important role to connect the hospital personnels with medical tourism patients. Conclusions : Translation in to each country's language concerning medical tourism material and understanding on one's country's culture and a medical coordinator are very important constituents for a successful medical tourism.

• The Korean Journal of Pain
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• v.8 no.1
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• pp.110-116
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• 1995

The pain clinic at the Chonbuk National University Hospital opened in 1983. We analyzed 3,212 patients who visited the clinic during the 10 years from 1983 to 1993. The patients visited total of 11,628 times. The most frequent age group was in the fifties. About an half of the patients complained of low back pain, and the epidural block was most frequently given as a treatment. We need more personnels involving in pain management and more equipments in diagnosing and treating the patients with chronic pain. Understanding and cooperation among departments under the basis of closer interdepartmental relationship would be essential for the further development of the pain clinc.

• The Korean Journal of Nuclear Medicine Technology
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• v.21 no.1
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• pp.23-28
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• 2017

Purpose Recently, there has been increasing demands for clinical departments at Asan Medical center in Seoul. They want to see the results of lab tests about blood samples as soon as possible and to be reported to them on the day. As the main contents of the survey, we explained the goodness of Asan medical center's in vitro and the points to be improved. Based on this, it became an opportunity to create a positive image of In vitro laboratory. In addition, we could identify their specific requirements through the surveys. Materials and Methods In September 2016, a total of 14 questionnaire surveys were conducted for 49 clinical departments and outpatient nurses at Asan Medical center in Seoul. The survey consists of description questions to be able to express the intention of the individual and the questions made on the Likert 4 point scale. The main contents of 14 questions are composed of goodness of In Vitro laboratory and points to be improved. Results 62% answered that the best service in In Vitro laboratory was "good accuracy and reproducibility". On the other hand, as an inconvenience when requesting blood tests, 73% pointed out that "the result report time was long", which was recognized as a part to be improved. There are many contents that "The result of all tests is reported within 2 hours" on the day of the examination. In the question - 'Are there some examination results which do not coincide well with clinical observations?', 55 of 56 people answered "no". Above all, the majority answered that waiting for re-examination results is too long. This problem must be causing discomfort to the patients. Conclusion In order to improve these problems, the first thing is to increase the number of blood tests by using the current personnel, equipments and reagents to the fullest by item in Asan Medical Center's Nuclear medicine in vitro part. Secondly, in case of re-examinations, we use the "AMIS message" to show other clinical departments the reporting time. This methode improves the efficiency of work with nurses and increases satisfaction of custom service. Thirdly, the correlation was evaluated by selecting the test species that can be carried out by the shortening method. Currently, C-peptide and insulin are implemented in the reaction process to shorten 2 hours into 1 hour. Finally, we are considering purchasing new equipments for quick test results.

• The Journal of the Korean life insurance medical association
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• v.2 no.1
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• pp.245-252
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• 1985

Ultrasonographic examination in the obstetrics not only makes easy of the diagnosis of Hydrocephalus, placenta previa, anencephalus and ectopic pregnancy, etc, but also guaranteed its excellence in the diagnosis of women gynecology disease. Especially in case that it doesn't affect radiation hazard on the embryo, its efficiency keeps increasing and it is spotlighted to many clinic doctors. Even though in general hospital we often observe congenital hydrocephalus in Med. Dept. which entirly undergoes the medical examination to the insured, we don't observe even the women delivered with child and it is very difficult to find a rare congenital hydrocephlus throughout other present insurance companies. We inspected a congenital hydrocephalus, which other medical equipments of present insurance companies have many difficulties in the medical examination, accompanied by meningoencephalocele by ultrasonic diagnosis. We analyzed and compared the data by ultrasonic diagnosis with that of surgical diagnosis and the results are follows; 1) We could correctly describe meningoencephalocele by ultrasonic diagnosis. 2) It was able to be diagnosed in LMP 22 weeks. 3) BPD has about 10 mm higher than normal value in LMP 22 weeks. 4) Dilatation of lateral ventricle was observed in LMP 22 weeks. 5) As paralled with ultrasonic diagnosis in pregnancy medical examination, accepting declines including the risk rate can be restrained.

• Journal of Digital Convergence
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• v.11 no.4
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• pp.467-472
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• 2013

Recently, the value of ICT-based medical devices, equipments, software and service development are is increased according to strengthening the convergence among ICT, medical technologies and services. This paper presents the new convergence business models by applying cloud service to medical industry. In order to develop the new convergence business models, we checked the validity and feasibility through analyzing the medical market environments such as medical data backup, medical regulation etc. and present the new convergence business models and the direction of commercial business models for customer acquisition, market expansion and competitiveness improvement. This study is to provide the guidelines for establishing the core capacity strengthening strategy and partnership cooperation strategy when we design a new convergence business models in various industrial fields.

• Journal of the Korea Safety Management & Science
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• v.12 no.3
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• pp.37-52
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• 2010

This study is aimed at proposing the national policy for medical device control system in Korea as deeply analysed the present status of the system. On 1979, Korean government had started to inspect 24 kinds of the medical devices such as X-ray diagnostic equipments, medical sterilizer and etc. mostly imported from advanced countries which USA, Germany and Japan for the first time according to the Pharmaceutical Affairs Law. However medical devices were becoming consideration as an important partner of diagnosis, curing and alleviation of diseases by medical doctors and also much important keeping the health at home. Furthermore medical devices industry can be designated as a national growth engine industry. So it is necessary not only to harmonize to international standards but also the harmonization of the system including pre-market application and post-market surveillance, is strongly needed by the Korea Food and Drugs Administration(KFDA).