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      • KCI등재

        극저주파 자계 세기를 원격 측정하는 장치

        유호상,왕종욱,서근미,김윤명,Yoo, Ho-Sang,Wang, Jong-Uk,Seo, Geun-Mee,Gimm, Yoon-Myoung 한국전자파학회 2007 한국전자파학회논문지 Vol.18 No.5

        본 논문에서는 극저주파 자계 세기를 원격으로 측정하기 위한 장치를 설계하고 제작하였다. 자계 측정기는 자계를 등방적으로 측정하기 위하여 3축 자계 센서를 사용하였으며, 측정 대역내 주파수에서 주파수 특성을 보상하기 위하여 등화기를 사용하였다. 3축 자계 센서의 출력 신호를 시간적으로 다중화 시켜, 3축간 균일한 이득 및 주파수 특성을 얻었다. 자계 측정 레벨 범위는 $0.01{\sim}10.0\;uT$이며, 측정 주파수 대역은 $40{\sim}180\;Hz$이 되도록 설계하였다. 제어 시스템은 무선으로 자계 측정기에 접근하며, 최대 접근 거리는 1.0 km이다. 제작된 장치의 측정 레벨 오차는 5% 이내이다. 제작된 장치는 고전압 송전선이 지나는 골프 연습장에 설치되었다. In this paper, we designed and implemented the system for telemetering ELF(Extremely Low Frequency) magnetic field intensity. The magnetic field measurement system used a 3-axis magnetic field sensor to measure the magnetic field with isotropy and the equalizer to compensate the frequency characteristic in band. By multiplexing three output signals of the magnetic field sensor in time domain, we got the uniform gain and frequency characteristic among three axes. This system was designed that the magnetic field measurement level range was $0.01{\sim}10.0\;uT$ and the measurement frequency band was $40{\sim}180\;Hz$. The control system would access to the magnetic field measurement system with RF and the maximum access distance was 1.0 km. We confirmed that the measurement level error of the fabricated system was within 5 %. The fabricated system was installed to a golf practice range where a high voltage power transmission line was crossed.

      • 足下垂를 同伴한 腰椎 椎間板 脫出症 患者 1例에 對한 臨床報告

        유호상,손원택,오민석,송태원 대전대학교 한방병원 2000 惠和醫學 Vol.9 No.2

        The clinical study on 1 case of patient with herniation of nucleus pulposus, L5-S1, combined with foot drop, who had been hospitalised in the Dept. of Oriental rehabilitation, college of oriental medicine, Daejon University, Daejon, Korea. The patient was practiced with herb medication, acupunture and physical therapy. The results were summerized as follows : 1. The main symptoms of herniation of nucleus pulposus(HNP), L5-S1 were low back pain, sciatica, dyserethesia and foot drop. 2. It is supposed that foot drop was caused by peroneal nerve palsy secondly produced by HNP, L5-S1. 3. Low back pain, sciatica and dyserethesia disappeared on the 30th day of admission. 4. foot drop was perfect on admission and the movement of ankle appeared on the 30th day. The improvement of it maintained constantly but the steppage gait was continued on discharge.

      • 肝硬變症의 臨床的 觀察 : 隨伴된 腹水·發熱을 中心으로

        柳浩相,玄振海 고려대학교 의과대학 1978 고려대 의대 잡지 Vol.15 No.1

        Comparative studies of age incidence, symptoms, signs and liver functions between the cases of ascites and non-ascites, fever and non-fever were performed on the basis of 198 cirrhotic patients who were admitted to the department of Gastroenterology, Korea University Hospital from May 1969 to May 1977. 1. Sex incidence: Male : female=2.4 : 1 Age incidence: Predominant age incidence of two decade: Range 41 to 60 Average age=52.1 2. The occurrence of ascites was increased by aging process. 3. There were numerous symptoms in group of liver cirrhosis complicated with fever on ascites than non-complicated group, especially GI bleeding had high incidence in ascites group. 4. In non-ascitic group, abdomenal tenderness, palpable liver and palpable spleen were higher than ascitic group. In physical findings, jaundice was strikingly high incidence in febrile group than non-febrile group. 5. The major complications were hepatic coma, bleeding, esophageal varices, hapatorenal syndrome and spontaneous bacterial peritonitis or other infections and all of the major complications revealed high incidence in ascitic group than non-ascitic group. Spontaneous bacterial peritonitis or other infections revealed high incidence in febrile group but high incidence of hepatic coma was noted in non-febrile group. 6. The liver functions in all patients were followed; total protien 6.52±0.98gm%, albumin 2.90±0.84 gm%, globulin 3.62±1.04 gm%, r-globulin 33.86±12.19%, S.G.O.T. 73.68±60.35 units, S.G.P.T. 46.39±36.35 units, total bilirubin 2.31±2.30 ㎎%, direct bilirubin 0.54±0.49 ㎎%, alkaline phosphatase 3.7±2.16 unit, T.T.T. 11.87±7.01 unit, and cholesterol 162.74±66.30 ㎎%. Comparison of average by statistical study between ascitic group and non-ascitic group in albumin, globulin and r-globulin were highly significant. Albumin was decreased, and globulin and r-globulin were increased significantly in ascitic group. Comparison of average by statistical study of total bilirubin, direct bilirubin and alkaline phosphatase between febrile and non-febrile group were highly significant. All of them increased significantly in febrile group.

      • 腦性麻痺의 東·西醫學的 文獻考察

        劉昊相,吳旼錫,宋泰元 대전대학교 한의학연구소 2000 한의학연구소 논문집 Vol.9 No.1

        In the literature study on the cerebral palsy, the results were as follows : 1.Cerebral palsy is defined as a disorder of movement and posture due to a defect or lesion of the immature brain. For practical purposes it is useful to exclude from cerebral palsy those disorders of posture and movement which are of short duration, due to a progressive disease, due solely to mental deficiency. 2.Cerebral Palsy is classified with quadriplegia, diplegia, hemi plegia, triplegia, and monoplegia or spastic CP, athetoid CP, ataxic CP, and combined classifications. 3.Causes of Cerebral Palsy is any damage with prenatal, natal and postnatal causes. 4.Management consists of helping the child achieve maximum potential in growth and development. This should be started as early as possible with identification of the very young child who may have a developmental disorder. Certain medications, surgery, and braces may be used to improve nerve and muscle coordination and prevent dysfunction. 5.The aim of treatment is to encourage children and adults to learn to be as independent as possible. Some children and adults who have midl cerebral palsy will have no problems in achieving independence 6.Oji(五遲),Oyeon(五軟) and Okyeong(五硬) have the simmiar concepts with the cerebral palsy. 7.Oji(五遲) Oyeon(五軟) and Okyeong(五硬) are caused by seoncheon-pumbu-bujok(先天稟賦不足) and related with gan(肝), bi(脾) and sin(腎). 8.The treatment is achieved by the method of bogansin(補肝腎), ganggeungol(强筋骨) and bojungikki(補中益氣). And jihwanghwan(地黃丸) has been used most frequently.

      • KCI등재

        코드 상관을 이용한 근거리 물체 탐지 장치

        유호상,김윤명,정종철,Yoo, Ho-Sang,Gimm, Youn-Myoung,Jung, Jong-Chul 한국전자파학회 2007 한국전자파학회논문지 Vol.18 No.4

        본 논문에서는 마이크로파를 이용하여 자동차, 무인 시설 및 자동문 등에서 적용 가능한 물체 탐지 장치 방안을 제안하고 있다. 마이크로파 탐지 기술이 보편화되면서, 제한된 대역폭으로 동반되는 상호 간섭 및 혼신은 필연적으로 예상된다. 본 논문에서는 간섭과 혼신 환경에서 영향을 받지 않는 가무작위(假無作爲) 코드를 사용하여 송수신 신호의 코드 상관으로 물체를 탐지한다. 도플러 주파수가 없는 고정 물체의 거리 탐침을 위한 가짜의 도플러(doppler) 신호를 생성하기 위하여 송신 신호의 위상은 지속적으로 변이된다. 또한, 수신 신호가 일정하도록 송신 신호의 전력을 제어하여, 수신기의 포화(saturation)를 제거하고 거리 측정 오차가 감소시켰다. 제안장치는 $0.5{\sim}2.0\;m$의 거리에 있는 물체를 탐지하여, 1.0 m 이내의 물체 유 무를 음성으로 알려준다. In this paper, it is proposed how to implement the object detection system which is able to apply to vehicular applications, unmanned facilities, automatic door and others with microwave. As the technology which detects an object with microwave is becoming more popular, it seems impossible to avoid mutual interference and jamming caused by limited frequency bandwidth. The system in this paper detects an object by correlating the code of TX and RX signals with the pseudo-random code having best quality in interference and jamming environment. In order to generate simulant doppler signal for detecting the distance of an fixed object where there is no doppler effect, the phase of TX signal is shifted continually. Also, the saturation of receiver was removed and the error of distance measurement was decreased by controlling the power of TX signal for getting constant RX signal. The proposed system detects a object which ranges from 0.5 m to 2.0 m and informs vocally whether there is the object within 1.0 m or not.

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