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      • 초고속 HMC 주축계의 열특성 해석

        김석일,김기상,김기태,나승표 한국공작기계학회 2001 한국공작기계학회 춘계학술대회논문집 Vol.2001 No.-

        This paper presents the thermal characteristics analysis of a high-speed HMC spindle system with angular contact ball bearings, built-in motor, oil-jet lubrication method, oil jacket cooling method, and so on. The spindle system is composed of the main spindle and sub-spindle which are mechanically connected by a flexible coupling. The spindles are supported by two front and rear bearings, and the built-in motor is located between the front and rear bearings of the sub-spindle. The thermal analysis model of spindle system is constructed by the finite element method, and the thermal characteristics in the design stage are estimated based on temperature distribution and heat flow under the various testing conditions related to material of bearing ball, spindle speed and coolant temperature.

      • 결절성경화증 환자에서의 SPECT 뇌영상 : 예비적 연구 A preliminary report

        한설희,이상수,정승연 충북대학교 의과대학 충북대학교 의학연구소 1991 忠北醫大學術誌 Vol.1 No.1

        간질발작을 포함한 전형적인 삼징후가 동반된 결절성경화증 환자를 대상으로 뇌파검사, 뇌전산화단층촬영술 및 단일광자방출단층촬영술을 시행하였다. 뇌전산화단층촬영술에서는 상의하석회화병소와 조영제증강이 뚜렷하지 않은 피질에 연한 저음영 소견이 관찰되었으며 이어서 시행한 단일광자방출단층촬영술에서는 뇌전산화단층촬영술 소견보다 더 광범위한 부위에 관류결손이 관찰되었다. 단일광자방출단층촬영술은 결절성경화증 환자에서 간질발현 병소인 피질결절을 발견하는데 있어서 전산화단층촬영술 및 뇌파검사보다 더 유용한 방법이며 치료방침 결정이나 예후판정에 있어서도 큰 도움을 줄 것으로 기대된다. Two patients with a well-established diagnosis of tuberous sclerosis and epilepsies as their principal clinical symptom were examined by conventional surface electroencephalography(EEG), computed tomography, and single photon emission computed tomography(SPECT) using the 99mTc hexamethyl prophyleneamine oxime(99mTc-HMPAO). The interictal EEG showed various abnormalities of poor localizing value. Brain computed tomography surely demonstrated subependymal calcifications, although the cortical lesions were not so conspicuous. However, the SPECT images of each patient clearly demonstrated decreased cerebral perfusion in cortical areas. It may be assumed that such perfusion defect areas represent the epileptic cortical tubers or those of altered myelination, which are characteristics of the disease.

      • 원발성진행성 실어증

        한설희 충북대학교 의과대학 충북대학교 의학연구소 1996 忠北醫大學術誌 Vol.6 No.2

        원발성진행성실어증은 수년간에 걸쳐 대뇌고위 기능중 언어영역만 고립적으로 침범되어 서서히 진행하는데 임상적으로 치매와 구별되어야 하는 비교적 드문 증후군이다. 저자는 최근에 62세 여자환자가 약 4년간에 걸쳐 서서히 진행한 언어장애를 주소로 본원 치매크리닉을 방문하여 신경심리검사, 뇌파검사, 뇌핵자기공면영상, 단일광자방출단층촬영술 등에서 전형적인 원발성진행성실어증으로 확인된 우리 나라 최초의 예를 경험하였기에 간단한 문헌고찰과 함께 보고하는 바이다. A 62-year-old right-handed woman presented with a progressive deterioration in her ability to name common object used in everyday life. Her initial language disturbance, word-finding difficulty, got worsened gradually over the next 4 years, She was able to point to the correct object when the word is provided by the examiner despite being unable to name it spontaneously. Her memory, attention, visuospatial skills and comportment were all intact. She is doing well in her daily living activities including taking care of herself, shopping and paying bills. MRI showed left perisylvian atrophy and dilated left frontal horn. SPECT study revealed decreased perfusion in left temporal lobe. Her clinical presentation together with the characteristic structural and functional neuroimaging findings were typical of 'primary progressive aphasia'.

      • KCI등재

        경도인지장애 : 알쯔하이머병의 초기단계인가? Is it an Early Stage of Alzheimer's Disease?

        한설희 대한치매학회 2003 Dementia and Neurocognitive Disorders Vol.2 No.2

        Aging causes deterioration of various aspects of memory performance in norma adults In recent years. a great deal of interest has been generated around the concept of a boundary or transitional state between normal aging and dementia or, more specifically, Alzheimer's disease (AD). This condition has received a number of descriptions including incipient dementia. questionable dementia. age-associated cognitive decline, isolated memory impairment and mild cognitive impairment (MCI) Commonly accepted guidelines for MCI have been established-memory complaint, preferably corroborated by an informant. objective memory impairment for age and education. normal general cognition, preserved activities of daily living, and not demented The precise definitions need to be explicated. but these will probably simply be a refinement of a concept. rather than a major re-definition Importantly, clinical and neurobiological evidence suggests that patients with MCI are at an increased risk for developing AD. Current research efforts are geared with MCI are at an increased risk for developing AD. Current research efforts are geared towards intervention strategies aimed at preventing the development of AD among persons with MCI.

      • Gerstmann 증후군을 동반한 교차 실어증 1례 : MRI 및 SPECT를 이용한 연구

        한설희 충북대학교 의학연구소 2001 忠北醫大學術誌 Vol.11 No.1

        교차실어증이란 오른손잡이 환자에서 우측 대뇌 반구 손상후에 언어장애(실어증)가 발생한 경우를 말한다.오른손잡이 실어증 환자의 약 1%-2%에서 교차실어증이 발생하는 것으로 알려져 있으나 구조적 병변이 잘 밝혀진 예는 드물다.더욱이 우뇌 손상과 관련된 좌, 우 지남력 상실, 수지 실인증, 계산불능증, 필기불능증의 4 가지 임상 특징을 가지는 Gerstmann 증후군의 예는 더욱 드물다.저자는 MRI 및 SPECT 뇌영상 검사로 우뇌 경색이 확인된 오른손잡이 환자에서 Gerstmann 증후군과 교차실어증이 동시에 발생한 드문 예를 경험하였기에 문헌 고찰과 함께 보고하는 바이다. Crossed aphasia refers to disturbance of language following a right hemisphere lesion in right handed individuals.Although it is estimated to occur in 1% to 2% of all dextral aphasic, well documented cases of crossed aphasia continue to be rare.Moreover, it is also rare to see a Gerstmann's syndrome (left-right disorientation, finger agnosia, dyscalculia, and dysgraphia) in right hemispheric lesion.In this paper, the author presents one case of crossed aphasia associated with Gerstmann syndrome in monolingual right handed patient. This case is found interesting to be reported because it is a extremely rare condition where a crossed aphasia and a Gerstmann syndrome are simultaneously seen in the same patient.

      • KCI등재

        유아의 구강보건관리에 영향을 미치는 요인에 관한 연구

        김설악 韓國學校保健學會 1999 韓國學校保健學會誌 Vol.8 No.2

        This study was performed to find variables which affect oral health care of infants. The subjects were 439 infants and their mothers who live in suburban area. Oral examinations for the infants were conducted and the questionnairs were given to infants' mothers. Toothbrushing frequency, oral hygiene score, the percentage of filled teeth among decayed teeth, and dental treatment experience of infants were used as dependent variable, respectively. Demographic, socio-economic variables and the other variables which might affect oral health care of infants were used as independent variables. Correlation analysis and analysis of variance were used for the independent variables of toothbrushing frequency, oral hygiene score, and the percentage of filled teeth among decayed teeth of infant. Chi-Square and Student's t-test were used for the dependent variables of dental treatment experience of infant. The obtained results were as follows; 1. Toothbrushing frequency of mother and internal locus of oral control of mother were the factors which affect toothbrusing frequency of infants. 2. Oral health belief of mother was the factor which affect oral hygiene score of infants. 3. Age of infant was the factor which affect the percentage of filled teeth among decayed teeth. 4. Age of infant and educational level of infant's mother were the factors which affect the infants' consumption of dental treatment.

      • KCI등재
      • KCI등재

        치매의 행동심리증상의 개관 : An Overview

        한설희 대한치매학회 2004 Dementia and Neurocognitive Disorders Vol.3 No.1

        Behavioral and psychological symptoms of dementia (BPSD) are among the most distressing manifestations of dementia and results in considerable social and economic burden. They are highly prevalent in Alzheimer's disease (AD) and other progressive degenerative dementias. BPSD are one of main reasons for premature institutionalization and are major causes of significant loss of quality-of-life for the patient and his/her family and caregivers. Recent investigations indicate that BPSD are not an epiphenomenona of cognitive impairment, but could be attributed to specific biological brain dysfunction. This brief review provides an overview of recent advances in the field of BPSD research.

      • 美國大學의 特異性 : 近大美國 文學을 中心으로

        鄭卨秀 忠州大學校 1968 한국교통대학교 논문집 Vol.2 No.-

        Every literature of Europe began before the time of printing. This was a period of folklore, legends, and ballads. Such a collection of simple songs and stories represents the "childhood" of a literature, in which it is starting to grow up and develop. But American literature had no such childhood. American literature was begun by the colonists who came from England to settle the New Condinent. We can divide Ameracan literature as the following : 1. The Period of the American Colonies ; The writings of this period dealt with religion, morals, and church teachings by Puritanism and Frontier Mind. 2. The Period of the American Revolution ; Because of Independence War, American literature did not develop in this period. 3. Romanticism ; The romantic writers dealt with admiration of nature, individual dignity freedom, right and to sing the rustic life. The active writers of this Period were Irving, Cooper, Emerson, Thoreau and Poe. 4. Realism ; American realism was led by Mark Twain who wrote「The Adventure of Tom Sawyer」,「The Adventure of Huckleberry Finn」etc. with American humour and style. From this period American literature, completely, escaped from the literature of another counntry. 5. Naturalism ; American realism was grown up by naturalists. Naturalists wrote the exposing novels to American society of this period. In this treatise, I described only about the peculiarity of modern American literature. I think what we know of the peculiarity of a period is very important. By understanding the literature of another country, we must know the peculiarity of that peroid well. As a result we can understand their literature deeply.

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