프로그램화 된 신체운동이 ADHD 아동의 주의산만행동과 과잉행동에 미치는 효과

최재원(Jae Won Choi),강경두(Kyoung Doo Kang),정혜연(Hye Yeon Jung) 한국사회체육학회 2012 한국사회체육학회지 Vol.0 No.47

The purpose of this study is to deeply analyze a change of the programmed physical exercise in attentiondeficient behavior and hyperactivity of children with ADHD, through the single-subject research design method. The research subjects were 4 elementary school students who are under being cured due to being judged to be ADHD at Child Psychiatric Clinic for C University Hospital where is located in Seoul at that time of beginning experiment in order to be conformed with the objective of research. For visual observation, the attention-deficient behavior was used the frequency-typed case sampling method(Shin So-yeon, Park Jaeguk, Kim Yeong-mi, Lee Hwa-eun, 2007). Observation of hyperactivity was used the contents, which Carlson and Hotfield(1991) defined, by referring to the contents by Mun Jae-gyeong(1998). The following are the results that were elicited through the research procedure of this study. First, the programmed physical exercise was indicated to reduce attention-deficient behavior in children with ADHD. Second, the programmed physical exercise was indicated to reduce hyperactivity in children with ADHD.

폐렴구균 감염에 의한 복부 대동맥류 1예

최소연,백경란,기현균,문치숙,오원섭,송재훈,신동현,위유미,고영혜 대한감염학회 2005 감염과 화학요법 Vol.37 No.2

폐렴구균은 폐렴, 수막염, 중이염 등의 감염증을 일으키나 감염성 대동맥류를 유발하는 경우는 매우 드물다. 저자들은 고혈압, 당뇨병 등을 가지고 있으며 대동맥류가 확인되지 않았던 78세 남자 환자에서 감염증의 증상없이 대동맥류 파열로 내원하여 폐렴구균에 의한 대동맥류로 진단되었던 증례를 경험하였기에 문헌 고찰과 함께 보고하는 바이다. Streptococcus pneumoniae has been an important etiologic agent of community-acquired pneumonia, meningitis, and otitis media. S. pneumoniae is also an important cause of bacteremia, especially in a community setting and it may cause intravascular infection. S. pneumoniae has been rarely been reparted to cause mycotic aneurysm and three is no case report on abdominal aneurysm caused by S. pneumoniae in Korea, yet. We experienced a case of abdominal aneurysm caused by S. pneumoniae infection. A 78-year old male with hypertension and diabetes mellitus was transferred to our hospital due to ruptured abdominal aortic aneurysm. Surgical intervention was done for removal of hematoma and vascular anastomosis. Ascending aorta showed atheromatous plaque with dystrophic calcification and thrombus. S. pneumoniae was isolated from the culture of the surgical specimen. After successful treatment with antibiotics for 7 weeks, he has been followed up uneventfully in outpatient clinic for 1 year.

반구형구조물에서의 전자파 산란

최재연 남서울대학교 2008 남서울대학교 논문집 Vol.14 No.2

In this paper, the electromagnetic scattering from the 2-dimensional hemisphere on the infinite plane is analyzed using UTD. The incident field is scattered by the hemisphere in the form of the reflected and surface diffracted field. In analyzing the scattered field, Keller's GTD can not predict the correct electromagnetic field in the transition region and the surface diffracted field. These electromagnetic field in the transition region and the surface diffracted field is analyzed using UTD. Considering the satellite communication environment, incident field is assumed to be plane wave, and hemisphere is treated as a perfect conductor. The result obtained in this paper can be applied to the analysis of scattering characteristics by dome-shaped man-made or natural structures. Key Words : UTD, GTD, Fock, Diffraction

Coherent 신호 검출기의 오류확률 성능 분석

최재연 남서울대학교출판국 2011 남서울대학교 정보통신 논문집 Vol.8 No.1

신호를 검출하는 방식은 비동기 방식과 동기 방식으로 나뉜다. 비동기 방식은 구성이 간단하지만 성능 개선에 제약을 받는다. 따라서, 일반적으로 성능을 중요시하는 시스템은 구조가 복잡하더라도 동기식 신호 검출법을 사용한다. 동기식 신호 검출은 신호의 존재 유무를 확인하는 것과 신호의 종류를 판별하는 것으로 나뉜다. 본 논문에서는 동기식 신호 검출 방식을 이용하여 신호의 존재 유무와 신호의 종류를 판별하고 이에대한 성능을 평가한다. Key Words : Coherent, Signal Detection, Pulse repetition, Wavelet

위성통신용 축모드 나선형 안테나설계

최재연 남서울대학교 2005 남서울대학교 논문집 Vol.11 No.1

This paper introduces design techniques for axial mode helical antenna operating at C-band. The basic parameters as helix diameter D, pitch angle α, length of pitch S, reflected surface S are analysed, and C-band helical antenna is designed. The turns of helix is 15 for improving performance of antenna gain. The result of measured characteristic is confirmed that VSWR is under 1.5:1.

비중격 천공이 없는 크롬 노출 근로자에서의 후각장해에 관한 연구

최재욱,이성희,최연국,이은일,김해준 대한산업의학회 2000 대한직업환경의학회지 Vol.12 No.2

Objectives : The chrome-induced olfactory alterations is caused by inhalation of chromic acid, a highly corrossive and toxic materials. And nasal septum perforation (NSP) has been suspected with possible causative factor of olfactory alterations. To our knowledge, there has been no report of the detailed findings of the olfactory alterations in chrome exposed subjects without nasal septum perforation (NSP). So we present the results of olfactory function test measured by T&T olfactometer and olfactometer perception test among chromium exposed workers without NSP. Methods : We performed this study in 25 study subjects and 25 control subjects matched with age, alcohol and smoking. All of subjects are man. We performed olfactory function test measured by T&T olfactometer and olfactometer perception test. Results : 1) The age distribution of the subjects involved in this study was from 20 to 54 years old (average 33.3 years old) and the mean duration exposed to chromium was from 64.9 months. 2) The olfactory function was checked by detection and recognition thresholds in five odorants. The detection thresholds of exposed group dealing with chromium were significantly increased in A and B ordorants than nonexposed group. The recognition thresholds of exposed group were significantly increased in D ordorants than nonexposed group. 3) The mean threshold of olfactometer perception test of exposed group were more increased than nonexposed group. But thresholds difference did not show statistical significance. 4) The detection thresholds of A and D ordorants, recognition threshold of C ordorants and thresholds of olfactometer perception test were increased in the relation with duration of chrome exposure. Conclusions : There has been no remarkable alterations in olfactory sense (T&T olfactometer and Olfactometer Perception Test) in subjects without nasal septum perforation (NSP) exposed to chromic acid.

SJO¨GREN'S SYNDROME 환자에게 즉시 임프란트 술식을 행한 치험례

최정환,손동석,이지연,이윤서,안선희,이재목 대한악안면성형재건외과학회 2000 Maxillofacial Plastic Reconstructive Surgery Vol.22 No.5

The old edentulous patients experience xerostomia commonly. They have considerable difficulty in wearing tissue-supported prosthesis and high risk rate of caries. One of them is Sj□gren's syndrome patient. Sj□gren's syndrome is a chronic inflammatory autoimmune disorder that results in a lymphocyte-mediated destruction of exocrine glands. We planned to place implants immediately after extraction in this case of autoimmune disease. The advantages of immediate implant placement include considerable decrease in time from tooth extraction to placement of the final prosthesis, fewer surgical procedures, and better acceptance of the overall treatment plan. We present a case of Sj□gren's syndrome patient treated with immediate implant placement & immediate loading in anterior region and immediate implant placement in posterior region.

급박 하지 허혈증에 대한 비수술적 치료의 장기 추적 결과

최재영,손민수,이길연,이상목,고석환,홍성화,윤층,오수명,박호철 대한혈관외과학회 2003 Vascular Specialist International Vol.19 No.1

다발성 간종괴의 형태로 나타난 특발성 과호산구 증후군 치험1예

최승오,연규민,이승민,김순제,왕준호,박형석,이재동,진춘조,이창훈,신현준,김정은 건국대학교 의과학연구소 2004 건국의과학학술지 Vol.14 No.-

Hypereosinophilic syndrome is characterized by persistent blood eosinophilia of 1,500/ul or more in the absence of known causes and multiorgan dysfunction by eosinophil-related tissue damage. In Korea, some cases of hypereosinophilic syndrome with hepatic involvement have been described with prolonged benign clinical courses. Most of them were diffuse or multifocal lesions in imaging studies, and a few case presenting as a single mass has been described. Here we report a case of hypereosinophilic syndrome with hepatic involvement in a 65-year-old man who presented with multifocal mass lesions. By abdominal US and CT scan, multiple, ill-defined nodules were detected in throughout the liver. Liver biopsy revealed severe eosinophilic hepatitis, suggestive of hypereosinophilic syndrome. Hepatic mass lesions improved after steroid administration for several weeks.

레이다의 유효반사면적에 따른 신호대 잡음비 분석

최재연 남서울대학교 공학연구센터 2001 공학연구 Vol.2 No.-

The signal to noise ratio(SNR) of a receiver in the radar system is varied with the cross-section fluctuation of the target. In this paper, the SNR is obtained by using the probability density function for the SNR. And then, the maximum detectable rages calculated, and are analyzed and compared with the previous methods. The computer simulation results show that the less the probability of false alarm and the larger probability of detection, the better accordance with the prediction.