동종 조혈모세포이식 후 발생한 크립토콕쿠스 척추염 1예

고윤호,임동준,이성수,조유경,이동건,최정현,김유진,민창기,김동욱,박정미,김춘추,신완식 대한감염학회 2001 감염 Vol.33 No.4

Skeletal cryptococcosis is an uncommon infection. Cryptococcus is a common cause of meningitis and infects 7∼10% of patients with AIDS. As well as AIDS, the infection may be seen in association with leukemia, lymphoma, Hodgkin's disease, sarcoidosis, tuberculosis and diabetes, also in patients on steroid medication. But there is no case report of skeletal cryptococcosis following allogeneic hematopoietic stem cell transplantation. A 40-year-old woman was admitted to the hospital because of low back pain. She had chronic myelogenous leukemia for 2 years and underwent allogeneic hematopoietic stem cell transplantation 8 months ago. She have been treated with steroid and cyclosporine orally because of chronic graft versus host disease. On examination she was afebrile and had posterior lower lumbar tenderness. But, she had no reduced strength of low extremities. Open biopsy was underwent. Histology demonstrated budding, round-to-oval, refractile yeast-like organisms within debris. The results of a lumbar puncture were unremarkable and cerebrospinal fluid culture failed to grow bacteria and yeast. The patient was treated with amphotericin B (1 gram) and AmBisome□ (2.8 gram) over 6 weeks. Three months after cessation of therapy, the patient was doing well.(Korean J Infect Dis 33:298∼301, 2001)

庭園의 公的機能에 관한 基礎硏究 : 認識과 評價 The Perception and Appraisal

고동완,김용기,김유일 성균관대학교 생명과학자원연구소 1995 生命資源科學硏究 Vol.2 No.1

This study was conducted to investigate perception and appraisal for public benefits to private gardens. As a. method, color-slide surrogates for garden landscape settimgs' are shown to students. For a given 26 scenes of garden landscape the respondents(75) judeged the public benefits along a five point scale. The findings are as follows; The public benefits are influenced by attributes and forms of gardening. These are 'unbelongingness: environmental disorder', 'physical screen; openness', 'visual screen', 'amounts of greenery', 'familiarity of material' and 'high trees greenary'.

溫泉觀光地의 目的地 選擇要因에 관한 硏究

高東完,金奉元,金裕逸 성균관대학교 생명과학자원연구소 1994 生命資源科學硏究 Vol.1 No.2

The purpose of this study was to examine factors of destination choice for hot spring resorts in Korea. Data were collected by questionnaire survey in January 1994, at three typical hot spring resorts : Suanbo, Paikam, and Chuksan. A total of 331 questionnaries were completed by vistiors of three survey sites. The findings of this study were summarized as follows : The seven factors of destnation choice was extracted by factor analysis : 1) the quality of hot spring water, 2) appendant facilites, 3) crowding and cleanness, 4) vicinity tourist area, 5) accessibility and cost, 6) recommendation from friends, 7) popularity. In conclusion, by evaluating the factors, first, endogenous character of resort(e.g. the quality of hot spring water) is the most prefered factor. Second, the factors of destination choice were closely correlated to the incomes of household. Third, the medical benefit of the hot water should be considered when making up hot spring resort.

데스크탑 마이크로 성형시스템의 가진성형에 따른 동특성 연구

홍동표,고유곤,홍용,김현식,이재완 한국공작기계학회 2009 한국공작기계학회 춘계학술대회논문집 Vol.2009 No.-

In this study, a desktop forming system which enables hydro dynamic bearing forming was developed. It consists of power train system, frequency forming system, manufactured Die-set, and controller of desktop forming system. The desktop micro forming system is focused on a higher load capacity and a shorter forming time than conventional system. Therefore it was designed for power train capability and load condition of Ball Screw. Moreover, a Piezo actuator was installed to make accurate machining possible, however, the Piezo actuator generate noise and vibration. Thus we performed the analysis of dynamic characteristics through the experiment about developed system in order to reduce such problems and discuss the alternative methods.

수도권 근교농촌의 토지이용과 경관의 변화

이애란,고동완,김유일 성균관대학교 생명과학자원연구소 1996 生命資源科學硏究 Vol.2 No.2

The city's countryside is adjusting to change by urbanisation. As it, the recent phenomena in this area decline in rural landuse and damage of landscape which has local characteristics. But, no study think together landuse and landscape at present in this area. The aim of this study was to clarify causes and problems of change by investigating intersection of environments and causes, processes and results of landuse and landscape in city's countryside. The sites are 2 Up and 2 Myon belong to Yongin Gun closed by Seoul City. These site are rapidly changed and almost intermediate between city and rural at present. As methods, I exeminated not only various statistical data but also unstatistical data. This case study revealed the diversity of change in city's countryside. 1) The change of landuse is clarified by Local Main commercial district is Yongin Up, Development of Traffic and industry is Kihung Up, Bed-town closed by city is Suji Myon and Recreation development is Pogok Myon. Each landuse divided by landscape types as local diversity in several Ri. Also each case seperatied by its special shape from each Ri and have causes and problems. 2) From these results did I point out problems and make a proposal about national landuse plan and landscape management in city's countryside. It stressed the need of a long-ranged policy of development in countryside considering local characteristics and residential environments. This paper was the start of case study about landuse and landscape in city's countryside.

치아회분과 석고혼합제재의 물성에 관한 연구

계기성,강동완,김광수,고영무,김윤주 대한치과기재학회 1998 대한치과재료학회지 Vol.25 No.1

The purpose of this study is to evaluate the use value of tooth ash-plaster mixture as an alternative material of the synthetic hydroxyapatite. For this purpose the author performed the experimental study to investigate the physical properties of sintered tooth ash-plaster mixture. The tooth ash was made by increasing procedure at 850℃, 900℃ and 950℃ for 20min, 40min and 60min respectively. The composition of tooth ash was analyzed using ICPSE and X-ray diffraction was done. The experimental specimens were molded to the cylindrical from 10mm high, 5mm diameter under the pressure of 1,000kg/㎠ for test of compressive strength values and 3mm high, 6mm diameter for test of diametral tensile strength values and surface microhardness values. Mixtures of tooth ash-plaster mixture was vacuum fired at 1,000℃ for 60min. The physical properties of the sintered specimen were examined and their microstructures were observed under the scanning electron microscope. The results were as follows: 1. x-ray diffraction showed the crystallization of tooth ash was developed as the incinerating temperature and time were increased, but the phase transformation following the incinerating temperature and time was not occurred. 2. The values of compressive strength of the sintered tooth ash-plaster mixture were the highest in case of incinerating temperature 950℃, the incinerating time 60min, and the tooth ash-plaster mixing weight ratio of 4:1. The higher tge incineration temperature and the longer the incineration time was, the more increased the compressive strengths were(p<0.01). 3. The values of diametral tensile strength of the sintered tooth ash-plaster mixture were the highest in case of the incinerating temperature 950℃, the incinerating time 60min, and the tooth ash-plaster mixing weight ratio of 4:1. The higher incineration temperature and the longer the incineration time was, the more increased the diametral tensile strengths were (p<0.01). The more decreased tooth ash-plaster mixing ratio was, the more increased the diametral tensile strength was, but there was not a significant difference statistically (p<0.01). 4. The values of surface microhardness of the sintered tooth ash-plaster mixture were also the highest in case of the incinerating temperature 950℃, the incinerating time 60min, and the tooth ash-plaster mixing weight ratio of 4:1. The higher the incineration temperature was, the more increased the surface microhardness values were, but there was not a significant difference statistically(p<0.01). The longer the incineration time was and the more decreased the tooth ash-plaster mixing ratio was, the more increased the surface microhardness values were. 5. The porosity and absorption of the sintered tooth ash-plaster mixture were the highest in case of the incinerating temperature 850℃, the incinerating time 20min, and the tooth ash-plaster mixing weight ratio of 3:1. The lower the incineration temperature was and the shorter the incineration time was, the more increased the porosity was. 6. There was a good wettability in the sintered tooth ash-plaster mixture under the scanning electron microscope.

자동차산업에 있어서 부품업체 품질보증에 관한 고찰

고동완(Dong Wan Ko) 한국자동차공학회 2004 오토저널 Vol.26 No.1

중독 중환자에서의 초기 영양상태평가와 예후와의 관계

고동완 ( Dong-wan Ko ),최상천 ( Sangcheon Choi ),민영기 ( Young-gi Min ),이혁진 ( Hyuk Jin Lee ),박은정 ( Eun Jung Park ) 대한임상독성학회 2021 대한임상독성학회지 Vol.19 No.2

Purpose: Nutritional status and support in critically ill patients are important factors in determining patient recovery and prognosis. The aim of this study was to analyze the early nutritional status and the methods of nutritional support in critically ill patients with acute poisoning and to evaluate the effect of nutritional status on prognosis. Methods: A retrospective study was conducted in tertiary care teaching hospital from January 2018 to December 2020. in an emergency department of university hospital, 220 patients who were stayed more than 2 days of poisoning in intensive care unit were enrolled. Results: 155 (70.5%) of patients with acute poisoning had low-risk in nutritional risk screening (NRS). Patients with malignancy had higher NRS (low risk 5.2%, moderate risk 18.5%, high risk 13.2%, p=0.024). Patients of 91.4% supplied nutrition via oral route or enteral route. Parenteral route for starting method of nutritional support were higher in patients with acute poisoning of herbicide or pesticide (medicine 3.2%, herbicide 13.8%, pesticide 22.2%, p=0.000). In multivariate logistic regression analysis, herbicide or pesticide intoxication, higher risk in NRS and sequential organ failure assessment over 4.5 were affecting factor on poor recovery at discharge. Conclusion: NRS in patients intoxicated with herbicide or pesticide were higher than that in patients intoxicated with medicine intoxication. Enteral nutrition in patients intoxicated with herbicide or pesticide was less common. Initial NRS was correlated with recovery at discharge in patient with intoxication. It is expected to be helpful in finding patients with high-risk nutritional status in acute poisoning patients and establishing a treatment plan that can actively implement nutritional support.

소셜미디어 이용동기가 몰입과 여가만족에 미치는 영향 -대학생의 페이스북 이용을 중심으로-

고동완 ( Dong Wan Ko ),박용순 ( Yong Soon Park ),이한아름 ( Han A Hreum Lee ) 대한관광경영학회 2013 觀光硏究 Vol.28 No.4

개방과 공유, 참여를 특징으로 하고 있는 소셜미디어는 모바일 인터넷 환경의 발달과 함께 사람들의 삶 속에 더욱 깊이 파고들고 있으며, 향후 소셜미디어의 영향력은 더욱 확대될 것이다. 본 연구는 페이스북 사용자를 대상으로 여가적 측면에서 점점 더 중요해지고 있는 소셜미디어 이용동기가 몰입과 여가만족에 미치는 영향을 검증하였다. 자료 수집을 위한 설문조사는 페이스북을 이용하는 대학생을 대상으로 2012년 9월에 주말을 포함하여 2회에 걸쳐 총 7일간 실시하여 총 395부를 분석에 활용하였다. 분석 결과, 4개의 소셜미디어 이용동기 중에 관계형성을 제외한 3개의 동기가 몰입에 영향을 미치는 것으로 나타났다. 여가만족에는 2개의 동기(자기표현, 사회교류)가 직간접적으로 영향을 미치고 있고, 기분전환 동기는 간접적으로만 영향을 미치는 것으로 나타났다. 또한, 몰입은 여가만족에 유의한 영향을 미치는 것으로 나타났다. 본 연구는 이론적, 방법론적 및 산업적 측면에서 중요한 의의를 가진다. 또한 본 연구를 통해서 페이스북 이용자의 경우 타인과의 관계형성을 위해서 소셜미디어를 이용하는 것이 아닌 사회에서 요구되는 가치와 태도를 공유하는 사회적 교류와 자기 정체성을 표현하고자하는 자기표현 욕구를 위해 페이스북과 같은 소셜미디어를 이용하는 것을 파악할 수 있었다. The influences of social media characterized by openness, sharing and participations have been infiltrated the lives of the people and its impacts are significantly expanding with the development of mobile internet environment. This study examines influences of the social media use motivation on the flow and leisure satisfaction as the case of ‘Facebook’ users. The total of 395 college students was surveyed for the analysis. As a result of path analysis, three types of social media use motivations (self-expression, social interaction, reflection) were revealed to affect the flow except for relationship motivation. In addition, two motivations (self-expression, social interaction) influenced on leisure satisfaction both directly and indirectly whereas the reflection motivation affected only indirectly. The major contribution of this study is to identify the propensity of Facebook users in the angles of theory, methodology and industry. Finally, the study concluded that people use the social media not only for the pursuit of personal purposes such as self-expression and reflection but also for the active social participation through social interaction such as the acquirement and share of information.

연구논문 : 휴양기회분포(ROS) 등급에 따른 지역주민의 관광개발 태도 차이 -허용변화한계(LAC) 기법을 이용한 지속가능한 지역관광개발 전략-

고동완 ( Dong Wan Ko ),정종의 ( Jong Eui Jeong ) 대한관광경영학회 2007 觀光硏究 Vol.22 No.1