Speaker Verification System Using Hybrid Model

강현규,양성일,권영헌 한양대학교 이학기술연구소 1999 이학기술연구지 Vol.1 No.-

본 논문은 하이브리드 모델을 이용한 화자 식별시스템에 대한 연구이다. 화자 식별을 위하여 설계한 하이브리드 화자 인식기는 일반적으로 사용되고 있는 HMM과 DTW를 사용하여 구성하였다. 인식기의 성능을 판단하기 위한 실험은 다음의 세 가지에 대하여 수행하였다. 시스템에 등록되어 있는 화자의 식별과 비 등록 화자의 등록된 화자 키워드 도용에 대한 시스템 거부, 그리고 등록된 화자의 다른 등록 화자에 대한 키워드 도용에 따른 시스템 거부에 관하여 검토하였다. 키워드는 화자의 이름을 사용하였고, 시스템에 사용된 특징 파라메터는 15차 켑스트럼(CEP), 10차 line spectrum pairs (LSP), 10개 대역으로 나뉘어진 주파수 대역별 에너지값(FB)을 사용하였다. 이 세 가지의 특징 파라메터들과 두 개의 인식기를 조합, 무두 여섯 개의 인식 결과 값을 누적하여 인식 여부를 결정하도록 하였다. 개별적 시스템에서 발생되는 오인식을 Hybrid model을 이용하여 처리한 본 시스템에서는 좋은 결과를 얻을 수 있었다. This paper is a study on the speaker verification system(SVS) using hybrid model. For speaker verification, we design a hybried-recognizer composed of conventional methods (such as HMM, DTW), We verified the performance; system access for registered speaker using correct keyword, system deny-Ⅰfor non-registered speaker using arbitrary keyword, and system deny-Ⅱ forregistered speaker using keyword of another registered speaker. A name of speaker is used as keyword. We use three classes of feature vectors respectively; line spectrum pairs (LSP), cepstrum (CEP), and filter bank energy (FB). Hybridrecognizer using these three features will give rise to six results with respect to feature and recognizer. Though a single system makes some recognition error, this speaker verification system using hybridmodel shows a good results in this experiment.

R.C. 라멘교의 윤하중분포폭 산정식 제안

강성후,박선준,김규형 東新大學校 工業技術硏究所 2001 工業技術硏究 Vol.7 No.-

The wheel load distribution width is used to consider transverse distribution effect when bridge is designed. But, the wheel load distribution width of R.C. slab which has a structural difference is used to design the R.C. rahmen bridge. This study aims to propose equations of wheel load distribution width for R.C. rahmen bridge. MIDAS GENw program, finite element analysis program, was utilized to calculate the wheel load distribution width. Result of finite element analysis that use MIDAS GENw was analyzed by SPSS that is the statistical analysis program. The proposed equations in this study compared with domestic bridge design code and AASHTO LRFD code. These equations can be used usefully when R.C. rahmen bridge design.

Rat의 복강내에 투여한 5-fluorouracil-polyglycolic acid 제형이 장기에 미치는 영향에 관한 연구

강대영,송규상,최정목,노승무,정경수,오정연,김진향,양준묵,최선웅,이진호,조준식,민병무,김용백,김창식,박근성,김승영,김학용,인현빈 충남대학교 의과대학 지역사회의학연구소 1998 충남의대잡지 Vol.25 No.1

For more effective intraperitoneal chemotherapy, the authers made 5-fluorouracil-polyglycolic acid composite disks(FU-PGA disks) with 5-fluorouracil and polyglycolic acid, a biodegradable polymer. We inserted the FU-PGA disk into the peritoneal cavites of Sprague-Dawley male rats, the control and three experimental groups; one FU-PGA disk insert group(300mg/kg), two FU-PGA disk insert group(600mg/kg), and three FU-PGA disk insert group(900mg/kg). The control group received a similar number of PGA disk inserts. A pharmacokinetic study was performed to measure the 5-fluorouracil concentration in the peritoneal fluid, blood, and tissues(liver, kidney and heart) at 24 hours, 72hours and 168 hours after insertion of the FU-PGA disk. Light and electron microscopic studies were done. The results were as follows: 1) The number of white blood cells and platelets decreased after FU-PGA insertion. The degree was proportional to the duration and amounts inserted. The change in the number of red blood cells varied slightly. 2) Light microscopically, slight changes were noted at 168 hours in the 3 disk insert group (900mg/kg). Mild fatty change and hepatocyte degeneration around the central veins of the liver were noted, with vacuolar degeneration in the proximal convoluted tubules of the kidney. 3) Electron microscopically,the liver showed focal increases of lipid droplets in the hepatocytes, and irregular nuclear membrane with focal nucleolar segregation of the fibrillar and granular elements. Also the double membranous structure of the hepatocytes and Kupffer cells was widened with bleb formation. The kidney showed wide separation of the nuclear double membrane in the proximal convoluted tubular cells and mesangial cells, with vacuolation and myelin figure formation in the mitochondria of the proximal convoluted tubular cells, at 72 hours and 168 hours in the 2 to 3 FU-PGA insert groups. The heart showed focal loss of cristae,vacuolation and myelin figure formation in the mitochondria of the 2 to 3 FU-PGA insert groups. In conclusion, despite the large amont of FU-PGA inserted, the histopathological changes in the liver, kidney and heart were slight, and consonant with the very low amount of 5-fluorouracil concentrations detected in the liver, kidney and heart. The above results suggest that the FU-PGA composite can serve as a new device for releasing drugs in a controlled manner and easily targeted to intraperitoneal organs. This device can improve the efficacy of intraperitoneal chemotherapy for gastric cancer.

거대 뇌동맥류의 수술적 치료 : 증례 보고 A Case Report

성연상,도종웅,강재규,김기욱,김상진 최신의학사 1990 最新醫學 Vol.33 No.12

모 축전지 회사 근로자들의 연폭로 지표에 대한 경시적 관찰

강명식,김용배,이용진,리갑수,김화성,황규윤,장봉기,이성수,안규동,이병국 순천향대학교 산업의학연구소 1998 순천향산업의학 Vol.4 No.1

Lead poisoning is still prevalent and one of important occupational disease in Korea. To prevent undue high lead burden and maintain good health condition of lead workers in lead using industries, periodic health examination and regular biological monitoring of lead workers are often required in addition to the fundamental improvement of their working condition. To evaluate the effect of comprehensive occupational health program with regular biological monitoring on the level of lead exposure of lead workers in lead using industries, 11 year database from 1983 to 1994 of one storage battery factory was reviewed. From 1983 to end of 1986 only periodic health examination was provided to the lead workers, but from 1987 comprehensive occupational health program with regular biological monitoring was provided to maintain better health condition of lead workers. Selected study variables for lead exposure were blood lead(PbB), zinc protoporphyrin in blood(ZPP), δ-aminolevulinic acid in urine(ALAU), hemoglobin(Hb), hematocrit(HCT). Information on sex, age and work duration was also reviewed. 5 years data from 1983 to 1987 and 3 years data from 1990, 1993 and 1994 were available for all lead exposure indices except ALAU which has only 5 years data from 1983 to 1997. The results of 11 years longitudinal observation of lead indices are all follows: 1. The mean value of ZPP of lead workers in 1983 was 148.7±73.1 ㎍/㎗(Male: 145.5±72.3, Female: 168.1±79.1), whereas that of ZPP of lead workers in 1994 was decreased to 64.3±32.7 ㎍/㎗(Male: 60.2±28.8, Female: 95.2±43.4). 2. The mean value of PbB of lead workers in 1983 was 56.4±18.8 ㎍/㎗(Male: 55.59±19.1, Female: 59.6±19.1), whereas that of PbB of lead workers in 1994 was dcreased to 35.4±11.9 ㎍/㎗(Male: 35.7±12.0, Female: 32.8±10.8). 3. The mean value of Hb of lead workers in 1983 was 14.1±1.4 g/㎗(Male: 14.4±1.1, Female: 11.7±0.8), whereas that of Hb of lead workers in 1994 was increased to 15.6±1.5 g/㎗(Male: 15.9±1.2, Female: 12.9±1.1). 4. Blood lead is most highly correlated with ZPP(r=0.522, male:0.54 and female:0.50) and also correlated with ALAU and work duration also. 5. The simple regression analysis of PbB and ZPP showed different coefficient of regression by the measurement year, but there was no difference of coefficient of regression between sex. The slope of equation of pooled data for 1983-1986 without comprehensive occupational health program was 2.16 and differed from that of pooled data for 1987-1994(1.25). This difference suggests that the unit effect of blood lead on ZPP was relatively smaller in later period of comprehensive occupational health program than carly period without comprehensive program. The slope change in the analysis of linear regression of PbB on ZPP in lead workers can be used to evaluate the possible effect of health intervention to prevent undue high lead absorption in lead using industries. 6. 11 years occupational health service in this storage battery factory brought out considerable improvement of health status of lead workers in terms of decrease of PbB and ZPP and increase of Hb and the improvement was more remarkable after the introduction of comprehensive occupational health program.

흰쥐 경동맥 손상 모형에서 체외 방사선조사에 의한 신내막 과증식억제 : Intercellular Adhesion Molecule-1과 Vascular cell Adhesion Molecule-1의 역할 The Possible Role of Intercellular Adhesion Molecule-1 and Vascular Cell Adhesion Molecule-1

강동헌,승기배,장기육,임상현,정해억,임효영,김연실,채장성,김재형,홍순조,최규보 대한순환기학회 1999 Korean Circulation Journal Vol.29 No.9

導入肉牛에 集團發生한 皮膚絲狀菌病(輪癬)에 對하여

康炳奎,魏聖河,朴承柱 全南大學校 農漁村開發硏究所 1984 農業科學技術硏究 Vol.19 No.-

1982年 7月 全南順天地域의 肥育用肉牛에 地域 集團的으로 發生한 皮膚疾患에 대한 炳因學的 調査를 하였던 바, Trichophyton verrucosum에 의한 皮膚絲狀菌炳(輪癬)임을 확인하였다. Bovine ringworm caused by Trichophophyton verrucosum was diagnosed clinically and mycologically. An enzootic of this infection was found in the area of Sunchum district of Korea from Spring to August, 1982.

전화망을 이용한 화자 식별에 관한 연구

강현규,고광현,양성일,권영헌 漢陽大學校 工學技術硏究所 1999 工學技術論文集 Vol.8 No.1

본 논문은 전화기 음성에 대하여 하이브리드 모델을 이용한 화자 식별 시스템에 대한 관한 연구이다. 전화음성 녹음을 위하여 전화기로부터 음성을 채집할 수 있는 장비의 설계와 화자 식별을 위한 하이브리드 인식기의 설계를 하였다 화자식별을 위하여 설계한 하이브리드 화자 인식기는 일반적으로 사용되고 있는 HMM과 DTW를 사용하여 구성하였다. 인식기의 성능을 판단하기 위한 실험은 다음의 두 가지 경우에 대하여 수행하였다. 시스템에 등록되어 있는 화자의 시스템 접근 허용과 비 등록 화자의 등록된 화자의 키워드 도용에 따른 시스템 거부에 관해 검토하였다. 키워드는 화자의 이름을 사용하였고 시스템에 사용된 특징 파라메터는 15차 켑스트럼(CEP), 10차 line spectrum pairs(LSP), 10개 대역으로 나뉘어진 주파수 대역별 에너지값(FB)을 사용하였다. 세 가지 특징 파라메터들과 인식기를 조합한 실험 결과를 누적하여 인식여부를 결정하도록 하였다. 개별적 시스템에서 발생되는 오인식을 하이브리드 모델을 이용한 본 시스템에서는 좋은 결과를 얻을 수 있었으며, 이로부터 전화기 음성을 이용하여 원격시스템에서 사용자를 확인할 수 있는 신뢰성 있는 사용자 확인 시스템이 제안된다. This paper is concerning a study on speaker verification system(SVS) over telephone network. For speater verification using telephone network, we design a hybrid-recognizer model composed of conventional methods (such as HMM, DTW) with a telephone recording system. We analyze the system performance as follows, access approval for a registered speaker using a correct keyword, and access denial for a registered or non-registered speaker using a keyword of other registered. speakers. Speaker's name is used as the keyword. We use three classes of feature vectors; line spectrum pairs(LSP), cepstrum(CEP), and filter bank energy(FB). The hybrid-recognizer model using these three features yields six results with respect to feature and recognizer. Though a single system makes some recognition error, this speaker verification system using the hybrid model gives good results in the experiment. and we suggest a reliable user verification system to remote system over telephone network.

우심방을 침범한 거대 비호지킨씨 림프종 1예

강상범,진승원,이은경,박용현,최용호,김용주,박준철,김재형,홍순조,최규보,권종범,원용순,박건,이은희 대한순환기학회 2000 Korean Circulation Journal Vol.30 No.4

家兎에 있어서 頭蓋內壓亢進이 Picrotoxin 痙攣에 미치는 영향

姜珍祥,鄭光現,丁相鍵,李順揆 大韓神經精神醫學會 1973 신경정신의학 Vol.12 No.1

After intravenous administration of picrotoxin, 4 steps of responses were observed, i. e. a) tremor and disturbance of righting reflex b) clonic convulsion c) tetanic convulsion and d) death. Picrotoxin (1㎎/㎏) elicited above responses 14.2 (a), 32.6 (b) and 38.8 (c) minutes after intravenous administration, exhibiting shortening of the duration with Increased doses. Jncreased intracranial pressure by intraventricular administration of saline or extradural balloon method facilitated picrotoxin convulsion. Phenobarbital and dilantin suppressed picrotoxin convulsion and facilitating effect of intracranial pressure on picrotoxin convulsion. Possible mechanism of the effect of increased intracranial pressure on picrotoxin convulsion was discussed.