http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
개미 군집 최적화 알고리즘과 센티워드넷을 이용한 사용자 감성 동향 분석 방법 연구
권경락 ( Kyunglag Kwon ),강대현 ( Daehyun Kang ),최수봉 ( Subong Choi ),박한샘 ( Hansaem Park ),정인정 ( In-jeong Chung ) 한국정보처리학회 2014 한국정보처리학회 학술대회논문집 Vol.21 No.1
본 논문엣서는 개미 군집 최적화 알고리즘과 센티워드넷(SentiWordNet)을 이용한 감성 분석 방법을 제안한다. 먼저, 데이터 수집 단계에서는 소셜 웹(예: 페이스북)으로부터 주어(subject), 서술어(predicate), 목적어(object)의 3 개의 요소로 구성된 RDF (Resource Description Framework)의 형태로 데이터를 수집한다. 그리고 개미 군집 최적화 알고리즘을 이용하여 수집된 RDF 튜플(tuple)을 수치화한 후, 사용자의 감성에 대하여 제안한 수식을 이용하여 페르몬(pheromone)을 계산한다. 센티워드넷을 통하여 얻은 감성 지수를 반영하여 이전 단계에서 계산된 여러 개의 페르몬 값에 대한 전체 감성 지수를 계산한다. 젱안한 방법의 타당성 검증을 위하여 전체 감성 지수를 바탕으로 계산된 사용자의 감성 동향의 적절하게 분석됨을 사용자의 실제 생활과의 비교를 통하여 보인다.
Ambler Class A Extended-Spectrum β-Lactamase 생성 Escherichia coli와 Klebsiella pneumoniae의국내분리현황
강지혜,배일권,권수봉,정석훈,이종욱,이위교,강정옥,안지영,홍성근,신종희,어영,박연준,김의종,이경원,용동은,우건조 대한임상미생물학회 2005 Annals of clinical microbiology Vol.8 No.1
Background: The aim of this study is to determine the nationwide prevalence of Ambler class A extended-spectrum β-lactamase (ESBL)-producing Escherichia coli and Klebsiella pneumoniae and to characterize genotypes of ESBLs. Methods: During the period of February through July, 2003, E. coliand K. pneumoniae isolates were collected from 12 hospitals in Korea. Antimicrobial susceptibilities were tested by disk diffusion method, and ESBL-production was determined by the double-disk synergy test. MICs of β-lactam antibiotics were tested by agar dilution method. Searches for blaTEM, blaSHV, blaCTX-M, blaPER-1, bla-VEB, blaIBC, blaGES and blaTLA genes were performed by PCR amplification, and the genotypes of ESBLs were determined by direct nucleotide sequence analysis of amplified products. Results: Resistance rates of E. coli (n=246) and K. pneumoniae (n=239) isolates to ceftazidime were 8.5% and 20.1%, respectively. Most prevalent Ambler class A ESBL genotypes in E. coliisolates were blaCTX-M-15 (n=4) and blaCTX-M-3 (n=3), and each of blaCTX-M-14, blaSHV-12, and blaTEM-52 gene was also found in one isolate. Most prevalent ESBL genotypes in K. pneumoniae were blaSHV-12 (n=30) and blaCTX-M-3 (n=13), and blaCTX-M-14 (n=5). blaSHV-2a (n=3), blaSHV-5 (n=2), blaTEM-52 (n=1), blaGES-3 (n=2) genes were also found. Conclusion: CTX-M-type ESBL-producing E. coli and K. pneumoniae isolates are spreading, and a GES-type ESBL has emerged in Korea.
CTX-M-9형 extended-spectrum β-lactamase 생성 Enterobacter cloacae의출현
홍유라,유호연,배일권,권수봉,정석훈,김현주,김윤화,이상희 대한임상미생물학회 2005 Annals of clinical microbiology Vol.8 No.1
Background: The aim of this study is to assess the prevalence and to investigate the molecular epidemiology of Ambler class A extended-spectrum β-lactamase (ESBL)-producing Enterobacter cloacaeisolates in a university hospital in Busan, Korea. Methods: Non-duplicated clinical isolates of E. cloacae from patients admitted in Kosin University Gospel Hospital were collected during the period from January through September, 2003. ESBL-production was examined by the double-disk synergy test (DDST) and the transferability of cefotaxime-resistance by conjugation. MICs of β-lactam antibiotics were determined by the agar dilution method and Ambler class A ESBL genes were searched by PCR amplification. Enterobacterial repetitive intergenic consensus (ERIC) PCR was performed to investigate epidemiological relationships among blaCTX-M-9 gene-carrying E. cloacaeisolates. Results: Antimicrobial resistance rates of E. cloacae isolates (n=148) to ceftazidime, cefotaxime, and aztreonam were 50.0%, 29.6%, and 48.0%, respectively. Among 50 E. cloacae isolates intermediate or resistant to more than one expanded-spectrum β-lactam agent, 41 (27.7%) showed positive results in DDST; of these 41 isolates, 1 was found to carry blaTEM-52 gene, 16 carried blaSHV-12 gene, 4 blaCTX-M-9 gene, and 19 both blaSHV-12 and blaCTX-M-9 genes. The 23 E. cloacae isolates carrying blaCTX-M-9 gene showed 9 different profiles by ERIC PCR. Conclusion: ESBL-producing E. cloacae was not uncommon in a university hospital in Busan, Korea. The commonest types of ESBLs produced by E. cloacaeisolates were SHV-12 and CTX-M-9. CTX-M-9 ESBL-producing E. cloacaeisolates showed diverse ERIC-PCR profiles, indicating that they were not originated from a common source.
Imipenem 내성 Pseudomonas aeruginosa의 분리 현황과 내성 획득 기전
윤외숙,이보영,배일권,권수봉,정석훈,정태전,정연욱 대한임상미생물학회 2005 Annals of clinical microbiology Vol.8 No.1
Background: Spread of imipenem-resistant Pseudomonas aeruginosa isolates is an important clinical threat. The aim of this study is to survey the prevalence of carbapenem-resistant P. aeruginosaisolates in a university hospital, Busan, Korea, and to determine the mechanisms of the resistance. Methods: P. aeruginosa isolates from the patients in Kosin University Gospel Hospital were collected during the period of June through September, 2004. Antimicrobial susceptibilities were tested by the disk diffusion method, and production of carbapenemase and metallo-β-lactamase was determined by the modified Hodge and EDTA-disk synergy tests, respectively. MICs were determined by the agar dilution method, and pIs of β-lactamases were determined by the isoelectric focusing. Genotypes of carbapenemases were determined by direct sequencing of amplified products. Results: A total of 77 clinical isolates of P. aeruginosa were collected. Twenty-two (55.0%) and 15 (37.5%) isolates showed positive results in the modified Hodge and EDTA-disk synergy tests, respectively. Searches for blaOXA-23 and blaIMP-1 genes showed positive results in 15 and 12 isolates, respectively. MIC ranges of imipenem and meropenem to OXA-23-producing isolates were 8-16 ㎍/mL and 2-32 ㎍/mL, respectively, and those to IMP-1-producing isolates were 2-≥256 ㎍/mL and 2-128 ㎍/mL, respectively. Conclusion: Production of OXA-23 or IMP-1 is the most prevalent mechanism of imipenemresistance in P. aeruginosa isolates in a university hospital, Busan, Korea. Periodical surveys are necessary to monitor the spreading of imipenem-resistant isolates and emerging new mechanisms of imipenem-resistance.