진행성 치매와 반복되는 뇌졸중을 보인 뇌 아밀로이드 혈관병증 1예

유봉구,곽강호,김태유,김광수,유경무 대한치매학회 2004 Dementia and Neurocognitive Disorders Vol.3 No.1

Cerebral amyloid angiopathy can cause intracerebral hemorrhage, progressive dementia, seizure and transient ischemic attacks. Dementia is a relatively common manifestation and associated with the presence of recurrent strokes and leukoencephalopathy. A 66-year-old right-handed man with hypertension and recurrent strokes presented with rapidly progressive dementia and sudden onset of dysarthria and dizziness. He showed memory impairment, personality and behavioral changes, and executive dysfunction for one and an half years. These symptoms developed insidiously and quite rapidly without fluctuation. Brain CT showed a small hemorrhage in the right cerebellum. Brain MRI, especially gradient-echo images revealed multiple cortical and cortico-subcortical microbleeds. Four weeks later, right hemiparesis suddenly developed and a repeated MRI showed a new left corona radiata infarction. We learn from this case that gradient-echo MR images should be performed in patients with rapidly progressive dementia and recurrent strokes.

운동신경원성질환을 동반한 산발성 크로이츠펠트-야곱병 1예

유봉구,김광수,유경무 대한치매학회 2003 Dementia and Neurocognitive Disorders Vol.2 No.1

Dementia with motor neuron disease includes frontotemporal dementia with motor neuron disease, amyotrophic Creuzfeldt-Jakob disease, Parkinson-amyotrophic lateral sclerosis-dementia complex, familial amyotrophic lateral sclerosis, and hereditary spastic paraparesis. A 54-years-old man presented with a eight month history of rapidly progressive dementia. Progressively more severe dementia was accompanied by muscle wasting and visible fasciculations. Cerebrospinal fluid showed the 14-3-3 protein. Brain MRI revealed mild diffuse atrophy in both frontal, temporal and parietal lobes. He died 9 months after onset of the disease. We report a patient with sporadic Creuzfeldt-Jakob disease with motor neuron disease.

體育의 認識과 關心에 관한 硏究 : of the high school students 高校生을 中心으로

柳鳳秀 건국대학교 1983 論文集 Vol.17 No.1

The purpose of this study is to provide the useful data for theoretical grounds to improve the current system of physical education and extracurricular activities. This study has been conducted with 242 students of Kun Kuk High school, using a questionaire for each of them. The results are fellows 1.Most of the students were not concerned with physical education but only with the subjects related with the college entrance examination. 2.Of all areas of physical education, both male and female students showed interest in ball games. 3.The greater part of students are all concerned for increasing class hours of physical education. 4.Both male and female students want more sports equipment. 5.Most students generally think that physical trianing test marks were far from fair. 6.Most male and female students think physical activities is good for their health. They are dissatisfied with the marks of the physical strength measurement and so they want the method of giving grades to be changed.

소아에서 Fogarty 카테터를 이용한 일측폐 환기 마취 경험

유수봉,강효석,임지훈,김두식,류시정 고신대학교의과대학 2008 고신대학교 의과대학 학술지 Vol.23 No.3

Thoracic surgery may be greatly facilitated by causing selective atelectasis of the lung being operated on (one-lung ventilation anesthesia). But the tube used for one-lung ventilation is greater outer diameter than conventional endotracheal tube when compare to each other with same inner diameter, so in some young children it is impossible to one-lung ventilation using double lumen tube or bronchial blocker tube because of narrow vocal cord. We performed one lung ventilation anesthesia using conventional endotracheal tube and Fogarty catheter as a bronchial blocker in 11-year old women who received lung biopsy surgery and left lower lobectomy.

아이콘 지향 시각 언어에 관한 연구

송후봉,유재우,서봉수 崇實大學校 生産技術硏究所 1991 論文集 Vol.21 No.-

In contrast to text-oriented language, visual language uses high-level visual representations in programming. The visual representations also take charge of important part of messages. This paper study on design and implementation of the icon-oriented visual language. In the study, we have suggested formal method which interprets visual sentences and developed-interactive environment being able to communicate user with icon.

다 파장 광원 개발을 위한 온도 안정화 특성에 관한 연구

지유강,박수봉 동신대학교 2006 論文集 Vol.16 No.-

본 논문은 광 전송 시스템에서 정보를 전송하기 위하여 필요한 안정된 광원을 얻기 위한 것으로써, 광원을 얻기 위한 광원시스템은 광원 모듈부와 디지털 제어부 그리고 온도 안정화부로 구성하였다. 본 논문에서는 레이져 다이오드의 광 출력을 안정화 시키기 위하여 온도센서와 자체개발한 TEC(Thermo Electric Cooler)를 이용하여 온도제어회로를 구성함으로써 안정된 광원을 얻을 수 있었다. 제안된 온도 안정화부의 온도범위는 ±0.5도 이내에서 제어가 가능하며 이와 같이 구성된 광원시스템의 4파장 광원은 ±0.05dB 이내에서 안정화되었다. In this paper, we composed optical source system of optical module section, digital control section, and temperature stability section to acquire optical source and to transmit information in optical transmit system, we could obtaion optical source stabilized as composed of temperature control circuit to take advantage of temperature sensor and ourselves developed TEC (Thermo Electric Cooler) to balance optical output power of laser diode. The temperature range of proposed temperature stability section make control possible within ±0.5 degree, also four wavelength optical source stabilized less than ±0.05dB.

차 영상을 이용한 실시간 무인 영상 감시시스템

양성수,지유강,박수봉 동신대학교 2006 論文集 Vol.16 No.-

무인 영상 감시 시스템은 각종 보안과 범죄예방에 대한 관심이 커지면서 감시 카메라를 이용하여 움직이는 물체를 추적하는 영상처리 시스템에 대한 관심이 크게 증가하고 있다. 본 논문에서는 CCD 카메라로 입력되어진 초기 설정된 배경 영상과 움직이는 영상을 분리하여 움직이는 영상만을 추적하고 기록하는 시스템을 설계하고, 실시간 개체 추적 알고리즘을 통해 CCD 카메라에서의 움직임 추적 방법에 의하여 감시 영역내의 움직임을 자동적으로 추적하고 이러한 움직임을 효과적으로 추출할 수 있는 원리를 제시하고자 한다. 먼저, 시간 주파수 저역 통과 필터(Temporal low-pass filtering)를 사용하여 움직이는 물체로부터 영상의 특징 변화를 획득한고 이를 추적한다. 이렇게 움직임이 발견되는 동안 이 비디오 정보를 저장한다. 이때 배경의 변화 및 밝기의 변화에 조금씩 오류가 발생되는 경우 이외 특이한 상황 변화는 거의 나타나지 않았고 움직임 물체의 밝기가 근처 배경 화소점의 밝기와 상당히 비슷하게 되는 영역에서는 물체의 추출이 순간적으로 어려워짐을 알 수 있었고, 반면에 상대적으로 높은 영상 잡음의 간섭이 있는 환경 아래서도 움직임 추출 및 분리 성능을 보였다. 본 논문에서 제안한 영상 시스템을 기반으로 한 감시 영상의 효율적 기록 및 검색 시스템은 앞으로 보다 대중적으로 쉽게 사용할 수 있을 것이다. There has been much increase of interest in image processing systems detecting moving objects using watching cameras, together with the increase of interest in security and crime prevention. This study was carried out to design a system which separates the background image input by CCD camera and the moving images, and which detects and records only the moving images, and to suggest a principle which can detect automatically and search effectively the moments in the watching area by the moving detection methods from CCD camera through real time object detection algorism. This system acquires and detects the feature changes of image from moving objects using temporal low-pass filtering while recording the video information. Apart from the little error in the changes of background and brightness, particular changes of situation did not occur. Searching objects was temporally difficult in the areas where the brightness of moving objects was similar to that of the nearby background. On the other hand, searching and separating movements was excellent even under the circumstances of relatively high intervention of image noise. It is expected that the image system based effective recording and searching system of watching image will be widely and popularly used in the near future.

뇌경색후 우울증에서 Homocysteine, Vitamin B12 및 Folate 혈청 농도와 관계

문지수,김광수,유봉구,김종국,김민정 고신대학교의과대학 2008 고신대학교 의과대학 학술지 Vol.23 No.1

Background and purpose : Poststroke depression is common and linked to poor prognosis and higher mortality after stroke. Previous studies suggest that high level of serum homocysteine and low levels of vitamin B12 and folate may cause depression. However previous studies has showed large variation concerning the influencing factors of poststroke depression. The purpose of this study was to evaluated the factor that influencing the poststroke depression including serum levels of homocysteine, vitamin B12 and folate. Methods : Beck depression inventory (BDI) was obtained in 62 patients with cerebral infarction, and the patients were divided into non-depression group (BDI ≤ 13) and depression group (BDI ? 14) according to their BDI scores. Then, we compared serum homocysteine, vitamin B12, folate, age, sex, Barthel index, Scandinavian stroke scale, acute aphasia screening protocol, Korean version of mini-mental state examination and ischemic brain lesion between NDG and DG. And also calculate the correlations between serum homocysteine, vitamin B12 and folate with severity of poststroke depression. Results : The NDG were 41 patients (66.1%) and DG were 21 patients (33.9%). Serum homocysteine, vitamine B12 and folate were not different between the groups, and these levels were not correlated with the severity of BDI. The age, sex, BI, SSS, AASP, K-MMSE and location of ischemic stroke were not different between the groups. Conclusion : Frequency of poststroke depression were high in patients with acute ischemic stroke. In contrast with previous studies, poststroke depression was not influenced by the serum levels of homocysteine, vitamin B12 and folate. And poststroke depression was not influenced by age, sex, physical handicap after stroke, aphasia, cognitive function and location of ischemic stroke.

한국판 MMSE를 이용한 간질 환자의 인지기능 평가

민지원,유봉구,김광수,유경무 고신대학교 의학부 2003 高神大學校 醫學部 論文集 Vol.18 No.1

Background & Purpose : Patients with complex partial seizure have impaired cognitive performance. The aim of this study was to evaluate the cognitive function of patients with epilepsy using Korean version of Mini-Mental State Examination (K-MMSE). Methods : We measured the K-MMSE in 23 patients with complex partial seizure and 22 normal controls. Frequency matching was done about age, sex and residence between the two groups. The evaluation of cognitive function was assessed with K-MMSE. Results : Compared with controls, patients with epilepsy showed significantly lower in total score of K-MMSE and attention-calculation item(P=0.008, P=0.014). There were no differences in the score of other items of K-MMSE between the two groups. Conclusions : These results showed that epileptic patients have impaired cognitive function, especially in attention-calculation performance.

방사성 페기물 처리장의 지하수 온도 측정을 위한 광섬유 센서의 제작 및 특성 분석

서정기,유욱재,장경원,조동현,신상훈,이봉수 제주대학교 방사선응용과학연구소 2008 방사선응용과학연구소논문집 Vol.22 No.-

Fiber-optic temperature sensing technology can alternative to classical measurement techniques in nuclear environment, Its advantages allow low cost, a long distance measurement and real-time, In this study, we have measured the optical power of power meter and the output voltage of photodiode according to change temperature of water.