• 한국통신학회논문지
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• 제24권9A호
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• pp.1346-1353
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• 1999

본 논문은 맥파검출기의 채널에서 발생하는 상호신호간섭이나 잡음을 제거하기 위하여 비적적응필터(MADF)알고리듬을 제안한다. 이 알고리듬은 맥파가 저주파이고 매우 천천히 변하는 환경하에서 기존의 Sign알고리듬보다 유리한 성능을 가지며, 이를 이용하여 분할등화기를 구현하였다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1998년도 추계학술대회 논문집 학회본부 C
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• pp.904-906
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• 1998

PD pulses have about one nanosecond rise time in the $SF_6$ gas insulation. These pulses propagate in the apparatus to PD sensors in the form of the voltage oscillation, high frequency current and the electromagnetic radiation. In this paper, we investigated the characteristics of two types of PD sensors, by putting high frequency signals in the form of sine waves and pulse into the test apparatus in air. Also, we measured PD quantity from the needle electrode and the sensitivity of the sensors. We found that PD of 70pC could be detected with this method and the study in $SF_6$ gas should be carried out for application to $SF_6$ GIS.

• 한국자기학회지
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• 제20권3호
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• pp.106-113
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• 2010

비가압 상태에서 혈압 및 맥박을 정확하게 측정한 값를 얻기 위하여 안정시 휴대성과 소형화가 가능한 자성 홀소자를 이용한 손목 착용형 맥진기의 시제품을 개발하였다. 본 시제품을 이용하여 맥진파를 분석한 13명의 임상시험 데이터로 상관인자를 정하여 혈압추정 알고리즘의 회귀식을 구하였다. 5초간 비가압 맥진기로 맥진파를 수집한 혈압추정값과 전자혈압계나 수은혈압계로 측정한 혈압값을 비교하였다. 비가압 맥진기로 추정한 최고혈압과 최저혈압의 표준편차는 혈압국제규격 허용치 범위 안에 있는 12.1과 5.9로 각각 나타났다.

• 대한방사선기술학회지:방사선기술과학
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• 제18권2호
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• pp.61-73
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• 1995

For the managements of the diagnostic X-ray equipments, the authors examined the output of single phase rectification assembly, Three phase rectification assembly and serial radiographic appartus, and got the following conclusions. 1. When the tube voltages in X-ray control panels ware compared to the measured values on the kVp pulse meter, only little differences were detected in all the X-ray equipments. And most of the equipments were all well managed within the internationally permitted limits, excepting the 12.02 % error at 120 kVp in three phase rectifying assembly. 2. As for the X-ray qualities affecting the X-ray images, the serial radiographic apparatus showed excellence, while the single phase rectification assembly were somewhat inferior to the others only maining the internationally recommended limits. 3. The tube voltage ranges where the X-ray output showed excellence were $100{\sim}200\;mA$ in serial radiographic apparatus, $200{\sim}350\;mA$ in three phase rectification assembly and $350{\sim}400\;mA$ in single phase rectification assembly respectively. 4. In the repeatability test of the X-ray equipments, CVs were in the range of $0.0029{\sim}0.049$, which is within the HEW or KS standards. Consequently all the equipments are thought to be well-manage. 5. This study on characteristics and output of the X-ray equipments was accomplished within a limited short time. Long-time researches on the function managements for the X-ray equipments should be followed along with the periodical checking the output for reduction of X-ray exposures to the patients or radio-technologists, and for maintanance and prediction of trouble of the equipments.

• 대한한방내과학회지
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• 제26권2호
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• pp.390-397
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• 2005

Background & Object: The aim of this study was to investigate the association of degree of fatigue and gastric motility, measured by EGG, with skin sympathetic tone or cardiovascular reactivity in patients with functional dyspepsia. Methods: Subjects were 56 patients with Functional dyspepsia and eight healthy people. Degree of fatigue was assessed by questionnaires consisting of subjective complaints of fatigue. Skin sympathetic tone was measured by Ryodoraku Score and Cardiovascular Reactivity was checked by Pulse diagnostic apparatus. Gastric motility was estimated by EGG. First, all patients were divided into two groups by Ryodoraku Score $40{\mu}A$(below and above). Second, they were subdivided into two groups by Cardiovascular Reactivity(decreased and increased or not decreased). Estimates were made on the extent differences of degree of fatigue or state of gastric motility in each group. Results: 1. Fatigue scores was significantly higher in females and in the Ryodoraku-Score-below-$40{\mu}A$ group. It was higher in the decreased cardiovascular reactivity group than the increased group, but to no significanct extent. Also, gastric motility was better in the Ryodoraku-Score-above-$40{\mu}A$, group than in the below group. Conclusions: These results suggest that degree of fatigue and gastric motility are associated with skin sympathetic tone, but not associated with cardiovascular reactivity, and that $40{\mu}A$ is a useful cutoff point in Ryodoraku Score for assessing degree of fatigue in functional dyspepsia patients.

• 대한한방내과학회지
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• 제27권2호
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• pp.510-520
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• 2006

Objectives: The aim of this study was to investigate the correlation between fatigue degree and Comprehensive diagnosis of Qui Xui Shui in patients with functional dyspepsia. There again, we investigated an association between scores obtained from Comprehensive diagnosis of Qui Xui Shui and state of skin sympathetic tone or cardiovascular reactivity. Methods: Subjects were 56 patients with Functional dyspepsia and 8 healthy People. Fatigue degree was assessed by questionnaires consisting of subjective complaints of fatigue. Comprehensive diagnoais of Qui Xue Shui was investigated by questionnaire and physical examination, total score and composition score were calculated from the symptom score. Skin sympathetic tone was measured by Ryodoraku Score(RS) and Cardiovascular Reactivity(CV Reactivity) was checked by Pulse diagnostic apparatus. All patients were divided into two groups by RS $40{\mu}A$(below and above) or by CV Reactivity(decreased and increased or not decreased). Results: There was highly significant correlation between Fatigue Degree and total score and each composition score of Comprehensive diagnosis of Qui Xui Shui. And total score of patients was significantly higher than that of health controls : in the patients, females than males. Significance related with the level of RS $40{\mu}Aor$ the state of CV Reactivity were not remarkable in both patients and health control group. Conclusions: Fatigue degree seems to have a special feature reflecting the state of Comprehensive Diagnosis of Qui Xui Shui in patients with functional dyspepsia.

• 대한예방한의학회지
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• 제4권1호
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• pp.32-50
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• 2000

On the process of research in the plan on oriental medical participation in the industrial health sponsored by BK21 project, we carried out the oriental medical health examination program for workers during former half-year We reached the conclusion as follows, 1. The oriental medical health examination program is contents and formalities that should be determined by present industrial health system, based on the oriental medical system and scholastic character, and included probability of the western and oriental medical cooperation. 2. The oriental medical health examination program can promote capability of individual health management and productive power of workers, and it is capable to manage on the self-conscious symptoms and macroschophically approach to their environment 3. The oriental medical health examination program that we have developed, is flow as questionare, understanding of working environment, information of result and later management. It is composed of three fields as follow , first, use of pulse diagnostic apparatus, understanding of the health promotion life style, and diagnosis of the oriental medical doctor, second, analysis of constitution, third, photographing for understanding of the musculoskeletal disorders, questionare for musculoskeletal self-conscious symptoms, and diagnosis of oriental medical doctor. 4. The oriental medical health examination program that we have developed, progressive from the view point of health, makes the oriental medical doctor's roll more important. It is the first trial at the western and oriental medical cooperation and characterized by excellence about musouloskeletal disorders. But it need to be improved in aspects of time and specialist on the health examination, diagnostic apparatus, control of examinant and later management. So we think that it needs research on the employment of health examination specialist, establishment of later management system, development of significantly diagnosable standard and assessable form on the health examination, and contents of health examination on the western and oriental medical cooperation.

• 대한한방소아과학회지
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• 제22권1호
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• pp.25-34
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• 2008

Objectives The purpose of this study is to investigate whether Korean oriental pediatrics hospitals are using their feedback surveys to improve their medical conditions. Methods We selected 24 oriental medicine university hospitals and sent surveys to investigate. 15 of those surveys were analyzed. Results The results were classified as follows; Only 9 of university hospital said that they are currently using their feedback surveys to improve their services. Question for asking the purpose of doing their feedback surveys, 58.3% of hospital responded to get some information for diagnosis, 25% of them said to see the progress of treatment of specific disease, and 16.7% answered for using their data to the further studies. The question about the reason why hospital were need to make these feedback surveys, 46.2% of them answered to apply better service, 38.4% of them said to post medical journal. The question for asking what do oriental medical hospitals check from feedback surveys, 40% of them said they check Ryodoraku, 33.3% was pulse diagnostic apparatus, EAV(Electro-puncture According to Voll) was 26.7%. The classification according to purpose of test resulted as follows; information for diagnosis was 48.1%, the progress of a disease was 37.3%. In addition oriental medical test there were blood test, radiological test, brain waves test, Hair Tissue Mineral Analysis(HTMA), ultrasonic test, body composition analysis. Conclusions Further clinical research is necessary for improvement of using the feedback survey effectively.