진동수가 큰 모드데이터를 이용한 트러스 구조물의 시스템 식별 및 손상추정

尹鍾烈,金成鉉 弘益大學校 科學技術硏究所 2001 科學技術硏究論文集 Vol.12 No.-

A method for identifying the element properties of a truss structure is developed. In the study, the measured natural frequencies and modal shapes of the truss are used. The equation error including unknown parameter is constructed from the dynamic model. To analyze the inverse problem, the least square method is used. The inverse problem model is then formulated as a linear simultaneous equation and unknown parameters are estimated without complex iteration processes. Since it is difficult to obtain all modal data of a structure, the estimation of unknown parameters using limited modal data is studied. In selection of modal data, high modal data which is sensitive to the variation of parameters are selected. Through the suggested method, accurate parameters and damage of a truss structure are identified and detected.

표고(Lentinus edodes (Berk.) Sing.)의 各 系統別 生産量과 菌絲生長및 子實體의 形態的 特性에 關한 硏究

尹甲熙,李鍾樂,鄭炫培 慶熙大學校 1986 論文集 Vol.15 No.-

For this purpose, The characteristics of mycelial growth were investigated on potato Dextrose Agar, sawdust and liquid media in the laboratory, and the mycelial growth, the yield of fruit-bodies, the growing type, and the morphology were investigated through the cultivation on bed-log in Kwang Neung district. The following results were obtained. 1. The optimum temperature for mycelial growth of Lentinus edodes was near 25℃ on potato Dextrose Agar medium. 2. From the growth curves of Lentinus edodes the strains were divided into two groups; SANRYUN 1, IMSHI 1, JEJU 1, KANGWON 1, in fast growing groups and SANRYUN 2, 3 in relatively slow growing groups. 3. The Mycelial dry weight obtained from the liquid culture was high in the order of IMSHI 1, KANGWON 1, JIRI 1, JEJU 1. 4. KANGWON 1, and JEJU 1 showed the best mycelia] growth on inner logs. 5. The productivity of the fruit-bodies was high in the order of KANGWON 1, IMSHI 1, SANRYUN 1, SANRYUN 3, SANRYUN 2. 6. The Growing types of the fruit-bodies of the strains were spring and autumn growing types at SANRYUN 1, IMSHI 1, KANGWON 1, JIRI 1, JEJU 1, and showed the characteristics of low temperature strains at SANRYUN 2, 3. 7 The best morphological characteristics of the fruit-bodies was observed in SANRYUN 2.

표고(Lentinus edodes(Berk.) Sing.)의 各 系統別 生産量과 菌絲生長 및 子實體의 形態的 特性에 關한 硏究

尹甲熙,李鍾樂,鄭炫培 경희대학교 부설 식량자원개발연구소 1986 硏究論文集 Vol.7 No.-

For this purpose, The characteristics of mycelial growth were investigated on potato Dextrose Agar, sawdust and liquid media in the laboratory, and the mycelial growth, the yield of fruit-bodies, the growing type, and the morphology were investigated through the cultivation on bed-log in Kwang Neung district. The following results were obtained. 1. The optimum temperature for mycelial growth of Lentinus edodes was near 25℃ on potato Dextrose Agar medium 2. From the growth curves of Lentinus edodes the strains were divided into two groups; SANRYUN 1, IMSHI 1, JEJU 1, KANGWON 1, in fast growing groups and SANRYUN 2, 3 in relatively slow growing groups. 3. The Mycelial dry weight obtained from the liquid culture was high in the order of IMSHI 1, KANGWON 1, JIRI 1, JEJU 1. 4. KANGWON 1, and JEJU 1 showed the best mycelial growth on inner logs. 5. The productivity of the fruit-bodies was high in the order of KANGWON 1, IMSHI 1, SANRYUN 1, SANRYUN 3, SANRYUN 2. 6. The Growng types of the fruit-bodies of the strains were spring and autumn growing types at SANRYUN 1 IMSHI 1, KANGWON 1, JIRI 1, JEJU 1, and showed the characteristics of low temperature strains at SANRYUN 2, 3. 7. The best morphological characteristics of the fruit-bodies was observed in SANRYUN 2.

Lugol液을 利用한 食道色素內視鏡檢査

尹鍾晩,曺局炫 全南大醫大 1980 전남의대학술지 Vol.17 No.2

癌家族症

尹鍾晩,曺局炫 대한의학협회 1976 대한의학협회지 Vol.19 No.11

우관상동맥 개구부 완전 폐쇄가 동반된 대동맥 판상부 협착증 1례

임상현,김종진,김희열,진승원,전희경,노태호,채장성,김재형,홍순조,최규보,윤정섭,김치경 대한순환기학회 2000 Korean Circulation Journal Vol.30 No.4

대전지역 소아 야뇨증에 관한 역학 조사

이재현,하용원,임재성,윤율로,설종구 충남대학교 의과대학 지역사회의학연구소 2000 충남의대잡지 Vol.27 No.2

Purpose: Nocturnal enuresis is defined as at least one wet night per month in children older than five years of age. Despite being a common disorder in children, not many reports about prevalence of enuresis in Korea have been written. To establish the prevalence of childhood enuresis in Taejon, an epidemiologic study was performed. Materials and methods: We evaluated 1,030 preschool and elementary school children living in Taejon city. The ages were between 5 and 10 years-old and the mean age was 7.5 years-old. The percentage of boys was 52.4% and the girls' was 47.6%. The questionaires was completed by the parents. Results: The overall prevalence of enuresis in Taejon city was 7%. The prevalence of enuresis was higher in boys(54.2%) than in girls(45.8%). The prevalence of primary and secondary enuresis was 55.6% and 44.4%, respectively. The inability to wake up in order to void because of deep sleep was 29.2% and positive family history was 20.8%. On the aspect of enuretic frequency, one episode per month was most common. The cases combined with diurnal enuresis were 9.7%. Among the enuretic children, the most common traditional treatment was self-voiding by awakening during night and most favored treatment was herbal medicine. Conclusion: These data show that the prevalence of nocturnal enuresis in Taejon city is lower than in other countries. It's prevalence is related to the positive family history, guilt feeling, diurnal enuresis, and early sleeping. However, concerning the prevalence of enuresis, there is statistically significant difference only in family history.

표재성 방광 이행상피세포암에 있어서 방광내 항암제주입요법 밀 면역요법

설종구,신보현,하용원,김윤종,노안식,손성용 충남대학교 의과대학 지역사회의학연구소 1999 충남의대잡지 Vol.26 No.2

Intravesical chemotherapy and immunotherapy will commonly eradicate residual papillary transitional cell carcinoma or carcinoma in situ(CIS) and clearly reduce the short-term incidence and rate of tumor recurrence. So I reviewed the effects and complications of different therapeutic agents(thiotepa, mitomycin-C, epirubicin, adriamycin, bacillus Cal mette-Cue'rin(BCG)) in superficial bladder cancer confirmed with histopathology, with the literatures. Bladder cancer were recurred more commonly in multiple tumors(50.6-56.3%), high grade tumors(52.6%) rather than in single(30.9%) and low grade(31.6%). And recurrence rates according to therapeutic agents were 83.3% in mitomycin-C, 71.4% in thiotepa, 50.0% in epirubicin, 46.6% in adriamycin and 32.6% in BCG. But incidence of complications were highest in BCG(50.5%). So sufficient preventive manuevers should be needed before intravesical theraphy, especially in BCG immunotherapy.

흰쥐에 Toluene과 Alcohol의 병행투여가 간 손상에 미치는 영향

전재현,임영숙,윤종국 동아시아식생활학회 1996 동아시아식생활학회지 Vol.6 No.3

To evaluate an effect of acute ethanol pretreatment on the liver injury in toluene-treated rats, toluene(50% in olive oil) was intraperitoneally given four times at 0.3㎖/100g body weight at interval of one day to the ethanol-pretreated rats(0.3㎖ of 50%/100g body weight). The increasing rate of liver weight per body weight(%), serum levels of alanine aminotransferase (ALT) activity, liver lipid peroxide content was higher in toluene treated rats pretreated with ethanol than those treated with toluene alone. Concomitantly the hepatic glucose-6-phosphatase activity was increased whereas glutathione content was decreased by ethanol pretreatment before toluene administration in rats. In case of direct administration of acetaldehyde or benzaldehyde to the rats, the liver weight per body weight(%) and serum levels of ALT activity were almost higher than the control group. There results indicate that the toluene treated rats showed the reversible injury of liver and intensified, however, by the ethanol treatment.

고속 공중 무선랜 시스템을 위한 효율적인 연결 수락 제어방법의 연구

이현우,윤홍,윤종호 한국항행학회 2003 韓國航行學會論文誌 Vol.7 No.2

본 논문에서는 무선랜 기술을 활용한 초고속 무선인터넷 서비스에서 사용자 단말의 최대 성능을 얻기 위해 효과적으로 AP를 선택하고 연결을 설정하는 방식에 관한 것이다. IEEE 802.11에 기반한 공중 무선랜 환경에서 AP의 탐색과정을 수동형과 능동형으로 분류하고, 본 논문에서는 수동형 AP탐색 과정은 무선랜 접속장치(AP:Access Points) MAC 계층에서 단말에 미디어 접근 정보를 방송으로 알려주는 비콘(Beacon) 프레임을 이용하고, 능동형 AP의 조사응답 (Probe Response)메시지 프레임을 이용하여 무선랜 단말에게 현제 AP에 연결(ASSOCIATION)되어 있는 단말 개수와 처리중인 프랙픽량을 알려주는 방식을 제안한다. 단말에서는 RSSI, AP에 연결된 단말의 개수와 처리하는 트래픽량의 정보를 종합적으로 검토하여 효율면에서 가장 유리한 AP를 선택하여 연결을 설정하면 다수의 사용자가 동시에 사용하는 핫스팟 환경에서도 최대성능을 얻을 수 있으며, 사업자입장에서는 사용자의 분산으로 자원과 망관리 효율면에서 상당한 효과가 있다. This paper generally relates to the field of wireless local area networks(WLANs), and more particularly, to AP selection and association methods for the performance of a station. In these days, IEEE 802.11 Wireless LAN network is widely deployed and used as an emerging service to connect high-speed Internet in the public wireless environment. But, if there are many users in hot spot area, they suffer a severe decrease of performance. Thus it needs an association an access control mechanism especially when it is used in the public environment. In this paper, we suggest a selection and association method using Beacon or Probe Response frames based IEEE 802.11. Station selects AP using the information of the capacity area in a Beacon or a Probe Response frame. According to the present paper, an association method for a public WLAN service, which includes a WLAN user terminal and an AP for relaying WLAN communications to and from the user terminal, includes the steps of the user terminal asking the AP's states for access to a radio channel; and the station selects and associates with the AP. According to the above-described selection in a high speed wireless Internet service based on public WLAN technologies that are currently in operations. Further, it is possible to improve the efficiency of network management.