대용량 텍스트 데이터베이스를 위한 효율적인 2단계 합성 요약 화일 방법

유재수(Yoo Jae Soo),강형일(Kang Hyung Il) 한국정보처리학회 1997 정보처리학회논문지 Vol.4 No.4

In this paper, we propose a two-level hybrid signature file method(THM) to efficiently deal with large text database that use a term discrimination concept. In addition, we apply Yoo's clustering scheme to the two-level hybrid signature file method. The clustering scheme groups similar signatures together according to the similarity of the highly discriminatory terms so that we may achieve better performance on retrieval. The space-time analytical model of the proposed two-level hybrid method is provided. Based on the analytical model and experiments, we compare it with the existing methods, i.e., the bit-sliced method(BM), the two-level method(TM), and the hybrid method(HM). As a result, we show that THM achieves the best retrieval performance in a large database with 100,000 records when the number of matching records is less than 160.

PC U형 보를 이용한 포스트텐션된 넓은 보-기둥 골조의 거동

유영찬,임재형 국립7개대학공동논문집간행위원회 2005 공업기술연구 Vol.5 No.-

Since the floor structural systems are repeated over the height of building, a large amount of materials and a great deal of workmanship are required if effective systems are not provided, The previous study(1)(2)(3) developed the post-tensioned precast concrete system(PPS), consists of wide beams with U-shaped precast beam and concrete column, and carried out the experimental study about the estimation of PPS capacity against the earthquake. However, the experimental study in accordance with the representativeness of the whole structure couldn't completely understand the behavior of the whole structure, and have a little lack of presenting the design method. This study is to perform an case study on the behavior of the whole structure, and seismic capability. As a results, PPS system which apply the precast concrete structure and post-tensioned method is to present a sufficient ability of the structural performance against the earthquake and the vibration

Low doses of ionizing radiation suppress doxorubicin-induced senescence-like phenotypes by activation of ERK1/2 and suppression of p38 kinase in MCF7 human breast cancer cells

신재식,우상혁,이형찬,홍승우,유두현,홍석일,이왕재,이명석,진영우,안성관,진동훈,박인철 Sookmyung Women's University Research Institute of 2010 여성과 건강 Vol.6 No.1

한국인 구개파열 아동의 치아발육에 관한 연구

유재형,손동수 大韓小兒齒科學會 1984 大韓小兒齒科學會誌 Vol.11 No.1

The author surveyed the tooth development of 50 cleft affected children (M:34, F:16). The following results were obtained. 1. The difference between the chronologic age and dental age was 0.61 years in the cleft group and 0.15 years in the control group. The delay in tooth development was observed in the cleft group. 2. In the cleft group, there was no difference in the delay of tooth development between the boys and the girls. 3. In the cleft group, there was no difference in the delay of tooth development between the maxilla and the mandible. 4. The delay of tooth development was more severe in the bilateral cleft group than in the unilateral cleft group. 5. In the unilateral cleft, there was no difference in tooth formation between the cleft side and corresponding side.

십이지장 궤양 환자와 만성 위염 환자의 염증 분포의 차이 및 H. pylori 집락도와 염증도의 상관관계

유광하,진춘조,박형석,이재동,김예리,윤성욱,이수인,윤호상 건국대학교 의과학연구소 1998 건국의과학학술지 Vol.8 No.-

An inflammatory difference between the gastric antrum, body and fundus was studied in 39 H.pylroi positive duodenal ulcer and 29 H. pylori chronic gastritis patients. Also we studied correlation of H. pylori colony count and inflammatory severity. Patients with newly diagnosed duodenal ulcer and chronic gastritis were endoscoped and two biopsy secimens each taken from the antrum, body and fundus. Although intestinal metaplasia in antrum and inflammatory activity in fundus were more severe in chronic gastritis patients. another inflammatory difference was equally likely to be found between two groups. There was no definite histological inflammatory difference between duodenal ulcer and chronic gastritis patients. A positive correlation was found between the number of H. pylori and the severity of inflammation.

간세포암의 십이지장침윤에 의한 상부위장관 출혈 1 예

유태현,한광협,박성하,김형길,문영명,한재호,조상호 대한소화기내시경학회 1999 Clinical Endoscopy Vol.19 No.2

Recent advances in both the diagnosis and treatment of hepatocellular carcinoma have improved the prognosis and changed the clinical significance of the recently increasing distant metastases. Distant metastases found after successful treament of the primary lesions are of great clinical significance for the treatment of hepatocellular carcinoma. The duodenum is a rare site of hematogenous metastases or direct invasion from hepatocellular carcinoma. A 23 year old man was admitted with upper gastrointestinal bleeding. He had been diagnosed with hepatocellular carcinoma and treated by a left lobectomy and chemoembolization. The patient was admittted for 12 months after the treatment of the primary tumor. Endoscopic examination revealed a mass in the duodenal bulb that protruded into the lumen. He died due to massive hematemesis. We report on a rare case of hepatocellular carcinoma with duodenal invasion in a 23-year-old male patient.

Low doses of ionizing radiation suppress doxorubicin-induced senescence-like phenotypes by activation of ERK1/2 and suppression of p38 kinase in MCF7 human breast cancer cells

신재식,우상혁,이형찬,홍승우,유두현,홍석일,이왕재,이명석,진영우,안성관,진동훈,박인철 Sookmyung Women's University Research Institute of 2010 여성과 건강 Vol.6 No.1

소포 통신 지시기의 퍼지 페트리 네트 모형화

유재택,이광형 崇實大學校 生産技術硏究所 1994 論文集 Vol.24 No.-

The packet communication protocol(X.25, TCP/IP etc.) was designed to ensure the efficient data transmission in the current public packet communication network. The packet communication network has various time of transmission delay because packet data doesn't use same path in the packet network. The retransmission setting time of the timer is also various. This paper proposes new method which decides retransmission timer based fuzzy theory in the packet communication protocol. The timer using the fuzzy Petri-net is modeled to implement the packet communication protocol. The fuzzy model of the retransmission timer is to infer the smoothed parameter αby constructing the fuzzy antecedent resultant from the errors between the elapsed time of one packet from the sender to the receiver and the estimated time. The fuzzy model of the timer is employed to adaptively produce the next packet timer value with the elapsed time and smoothed parameter α. We propose an effective method of network using packet mode.

XML 문서를 위한 효율적인 인덱싱 모델

강형일,박종관,유재수 충북대학교 컴퓨터정보통신 연구소 2000 컴퓨터정보통신연구 Vol.8 No.2

본 논문에서는 문서 계층상의 모든 레벨에서 내용 기반 질의와 구조 및 애트리뷰트 질의와 같은 다양한 질의를 지원하기 위해 구조정보를 제안한다. 구조정보는 EID(Element Id), ETID(Element Type Id), SORD(Sibling ORDer), SSORD(Same Sibling ORDer)로 구성된다. EID는 DTD의 각 엘레먼트에 할당되는 유일한 값이며 ETID는 부모 노드와 자식 노드들 간의 계층정보이다. SORD와 SSORD는 각각 형제 노드들 간의 순서정보와 동일 엘리먼트의 형제 노드들 간의 순서정보이다. 이런 구조정보를 이용해 효율적인 검색을 위한 내용 색인, 구조 색인, 애트리뷰트 색인을 설계한다. 또한 내용 질의, 구조 질의, 애트리뷰트 질의, 혼합 질의와 같은 다양한 질의를 지원함을 보인다. In this paper, we propose structured information to support a wide range of queries such as content-based queries and structure-attribute queries at all levels of the document hierarchy. Structured information consists of EID(Element Id), ETID(Element Type Id), SORD(Sibling ORDer) and SSORD(Same Sibling ORDer). EID is a unique value assigned to each element of DTD. ETID is hierarchy information between parent nodes and child nodes. SORD and SSORD represent an order information between sibling nodes and an order information among the sibling nodes with the same element respectively. Using this structured information, we design content index, structure index, and attribute index for efficient retrieval. Also, we shows that it supports the various type of queries such as content queries, structure queries, attribute queries and hybrid queries correctly.

조각대황탕이 血壓 및 局所腦血流量에 미치는 影響

朴宰亨,金敬堯 대한동의병리학회 1998 동의생리병리학회지 Vol.12 No.2

腦血管 疾患은 中樞神經系에 影響을 미치는 成人病 中에서 가장 흔하면서도 致命的인 것으로서 腦 血液 供給에 있어서 어떠한 原因으로든 局所 血流의 障碍로 因하여 招來되는 神經學的 缺陷과 突發的인 發病을 特徵으로 하고 있으며, 西醫學에서의 腦血管 疾患은 韓醫學에서는 中風의 範疇에서 다루어지고 있다. 韓醫學에서 中風은 傷寒이 아닌 內經에 처음 나타난다고 할 수 있는데 中風이라는 이름으로서가 아니라 "부격""偏枯""偏風"等의 이름으로 나타나고 있으며, 이에 대한 治療는 原因에 따라서 多樣하게 治療하여 患者의 症狀을 緩和시키는 治療法을 使用하여 왔다. 四象醫學에서는 中風의 원인에 대하여 少陰人은 심하비증과 氣鬱證, 少陽人은 火氣病症, 太陰人은 肝燥熱이라 하여 中風의 發病率이 太陰人에 가장 好發하는 것으로 보았으며, 그 治療處方에 있어 淸肺瀉肝湯, 淸心連子湯, 熱多寒少湯 및 조각대황탕 等을 使用하였다. 조각대황탕은『東醫壽世保元』太陰人病 24處方 中에 記載된 新定方으로서 大黃, 조각자, 葛根, 升麻로 構成되어 있지만 지금까지 血壓 및 局所腦血流量에 대한 實驗의 論文으로는 없었다. 그리하여 太陰人의 中風에 使用되는 조각대황탕을 Rat에 投與한 후 laser-Doppler flowmetry를 利用하여 血壓과 局所腦血流量의 變化를 測定한 結果 조각대황탕과 이를 構成하고 있는 藥物 中 大黃과 葛根에 있어서는 局所腦血流量의 增加가 有意性있게 나타났지만 血壓의 變化에는 有意性이 나타나지 않았다. 이는 앞으로 조각대황탕과 構成藥物에 대한 效能比較가 進行되어야 할 것이며, 腦虛血을 誘發한 狀態에서의 實驗과 機轉에 대한 硏究가 더욱 필요하리라 思料된다. ChoKagDaeWhangTang(CD) has been used in Sasang(四象) constitution medicine for many years as a therapeutic agent for cerebral disease. The effect of CD on the vascular system is not known. The purpose of this study was to determine the effect of CD on blood pressure and regional cerebral blood flow(rCBF) of rats. 1. rCBF was increased by CD, Rhei Radix Et Rhizoma(RRER) and Puerariae Radix(PR) in a dose-dependent manner. 2. Blood pressure did not affected by CD, RREP and PR in rats.