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.

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

가정학습 가이드를 통한 산수과 학력향상 : 국민학교 산수과 2학년을 중심으로 Forcarized in the 2nd Year Grade in the Elementary School, the Arithematic Course

강용길,이상규 晋州敎育大學校 科學敎育硏究所 1981 科學敎育硏究 Vol.7 No.-

Protein Methylase Ⅱ 活性 및 그 酵素力學에 미치는 金屬이온의 影響

姜龍淳,林圭,郭相太 충남대학교 의과대학 지역사회의학연구소 1988 충남의대잡지 Vol.15 No.1

Effects of metal ions on the kinetic properties of protein methylase II from various tissues were investigated. 1. Copper ion(Cu^2+) and zinc ion(Zn^2+) were potent inhibitors, the activity of the enzymes from heart, liver, brain and placenta being completely inhibited at 2 mM. The other ions did not almostly affect the activity of the enzyme. 2. The inhibition of copper and zinc ions were recovered 58%, 62% of the enzyme activities of heart and 68%, 67% of its activities of placenta by EDTA, respectively. And the inhibition of zinc ion was almostly recovered by adding histone after zinc ion and EDTA preincubation. 3. The inhibition of copper ion was completely recovered by adding of 10 mM of mercaptoetharnol, but zinc ion did not almost affect. 4. The inhibition of zinc ion was completely recovered by adding 50 mM of phosphate, but copper ion did not almost affect. 5. The apparent Km values for S-adenosyl-L-methionine were 4x10^-6 M in heart and 2x10^-6M in placenta. The kinetic analysis of the enzymes from heart and placenta in the presence of 50 uM of copper ion showed that the nature of the inhibition was noncomptitive, considering that Km was constant and Vmax was decreased, and 50 uM zinc ion showed that it was uncompetitive, considering that both Km and Vmax were decreased. These results suggest that the inhibitions of protein methylase II by copper and zinc ion are related to the other mechanisms, respectively.

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.

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.

시간-주파수 분포를 이용한 레이다 신호해석 및 처리에 관한 연구

강상만,김중규 成均館大學校 科學技術硏究所 1995 論文集 Vol.46 No.2

본 논문에서는 Time Frequency Distribution(TFD)을 이용한 새로운 레이다 신호처리 알고리즘을 제시한다. 신호를 시간과 주파수 영역에 대해서 동시에 해석하는 방법입 TFD를 이용하여 레이다 신호처리의 궁극적인 목표인 time delay(range)와 frequency shift(velocity)를 찾아내는 것이 그 목적이다. 능동적 레이다의 경우, 레이다 신호의 특성상 송신신호에 대한 정확한 정보를 가지고 있다는 점에 착안하여 송·수신 신호간에 correlation을 취한 새로운 신호에 대해서 TFD를 취해 주는 Correlated TFD(CTFD) 알고리즘을 제안한다. CTFD알고리즘을 통해서 전파의 송·수신 경로에 더해지게 되는 잡음성분의 영향을 감소시키는 효과를 얻을 수 있다. 따라서 보다 정확한 detection이 가능하게 된다. 그러나 TFD는 많은 계산 과정을 필요로 하기 때문에 현재의 기술로는 실시간 처리가 어려운 상황이다. 그래서 실시간 처리를 위한 방법으로 correlation과 TFD를 병행하여 time delay와 frequency shift를 독립적으로 찾아내는 보다 빠른 알고리즘 또한 제시한다. 본 논문에서 제시한 알고리즘의 타당성을 보이기 위해 -30dB ∼ 30dB 까지의 SNR을 갖는 additive white Gaussian noise(AWGN) 상황을 가정하여 기존의 방법과의 비교를 통한 실험결과를 제시한다. We propose a new algorithm for radar signal analysis and processing using the Time Frequency Distribution(TFD) by which the radar signal can be analyzed both in time and frequency domains simultaneously. The objective is to estimate the time delay and frequency shift between the transmitted signal and. the received signal, which is the typical goal of a radar system. The proposed algorithm is a Correlated TFD(CTFD) in the sense that it computes the time -frequency distribution of the cross-correlation between the transmitted and the received signals. Here, we consider an active radar system for which the signal characteristics are completely known a priori. By taking the TFD of the cross -correlation function rather than the radar signal itself, the effect of channel noise could be reduced significantly. One of the drawbacks for TFD method is that it involves a lot of computations, and thus can hardly be implemented in real time. To achieve the desired goal, i.e. estimation of time delay and frequency shift, in less time than the conventional TFD method, we propose a modified processing scheme which independently implements the correlation and the TFD methods for estimating the time delay and the frequency shift respectively. Finally in order to show the feasibility of our proposed scheme, we give some numerical results for an additive white Gaussian noise(AWGN) environment where the signal to noise ranges from -30 dB to 30 dB, and compared the result with conventional TFD methods.

준설수심에 따른 사천만의 해수유동 특성에 관한 연구

강대석,유상호,민일규,이동수,민병형 東亞大學校 海洋資源硏究所 2003 硏究論文集 Vol.15 No.-

This study on the characteristics of the tidal current at the half closed bay selected Sachoˇn Bay located in the western Kyung-nam area as the object location of the study. Then, I analyzed the current with the varying dredging depth after the depth integral of the three Dimensional continuous equation and Navier-stokes equation. The study would get the following results, and the results could be used meamingfully as the analysis material about the dredging depth's influnce on the surrounding ocean when developing the coastal port. 1. When measuring the tidal current, there is a bit dispersion in the current direction of the observed object, but it is the wind effect at the bay. Considering that the calculated result is the shallow-water equation integranted in depth, the results can be concluded to in accored with my expectancy. 2. In case of reclaiming and dredging, the flow velocity and direciton change constantly, compared with the present condition. 3. At the wide bay dredge depth does not arrect the level of the ocean, but in case of inflow from the flood, the increase of the inflow of the river water affects the level of the ocean. 4. As the dredge depth grows deep, the maximum flood tidal current and obb tidal current at the front coast of the reclaimed decreases a little. However, the wide area Pc-7~Pc-9 doesn't show any change. As we saw in the above result, feacturcs of the tidal current as the level of the ocean and the current velocity don't change in the aspect of the ocean engineering even if we increase the degree of the dredge depth up to 6m in Sachoˇn Bay

삼랑진 지점의 수위-유량곡선식 개발에 관한 연구

강대석,민일규,이승휘,옥치율 東亞大學校 海洋資源硏究所 2003 硏究論文集 Vol.15 No.-

In this study, Development The Rating-Curve Formula through to enforce the discharge investigator on Samrangjin Point. As use the result, We earning rationality, Economical irrigation and establishment a water control project, the basic material of determines hydraulic capacity to design water resources structure. At the same time, We can use The Rating-curve for a high efficient Flood wamning forecast in Nak-Dong River. The result and opinion of the discharge investigator is as follow: 1. The Rating-Curve Formula is Q=(-1065.91941)+1137.237287H+4.671360913H³(1.27<H<9.57) 2. A periodical and continuously management make a routine check over a watermark. 3. When enforce the discharge inverstigator, it require many time, person and equipment. So we can get accuracy and safety working conditions by assist a new system equipment to amount of flowing water measurement. 4. We must sublate to prepare the river bed or collect aggregate as possible, for the upper and downstream section in the established point of a watermark .

졸-겔 공정에 의한 실리카-지르코니아 복합 분말 합성

강성,박규섭,배동식 국립7개대학공동논문집간행위원회 2005 공업기술연구 Vol.5 No.-

Silica-zirconia composite nanoparticles have been synthesized by a metal alkoxide hydrolysis and condensation. The size and composition of the synthesized particles can be controlled by manipulating the relative rates of the hydrolysis and condensation reaction of precursor. The average size of range of synthesized silica-zirconia composite nanoparticles was about in the size range of 30-100nm. The effects of synthesis parameters, such as the molar ratio of water to precursor and the molar ratio of water to surfactant, are discussed.