• Journal of the korean veterinary medical association
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• v.17 no.4
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• pp.34-37
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• 1981

FSC는 상시지방적을 보유하는 특성을 가지고 있으므로 지방섭취세포(fat-storing cell, FSC)라고 명명되어으며 유동에 노출하는 성세포, 내피세포와 달리 이 세포의 유동면은 교원직유와 내피세포에서 유래하는 윤랑선에 의하여 피복된다. 더욱이 이 세포는 각종 척추동물에 존재한다는 사실이 확인 되었으며 그 지방적은 동물의 종류에 따라 특유한 형을 구비하는 동시에 개체차가 없다. FSC는 이물탐식성이 없으며 지방적을 함유한 성세포와는 위치적, 기능적으로 다르다는 것이 증명되었다. 발생학적으로는 간엽세포에 속하며 유사분제에 의하여 증식능력을 가지고 있다. 이 세포에는 glycogen이 증명되며 모든 지방세포의 실험이 나타나는 성적에서와 유사하게 항시 지방을 합성하여 종의 특유한 형을 가진 지방적으로서 저장됨을 시사하였다. 전현적관륜에 의하여 FSC가 유동주위강(disse腔) 속에 있어 성세포, 내피세포와는 달리 유동에 노출하지 않고 항상 내피세포층과 교원직유에 의하여 유동에서 격리됨을 추정하였다. 이로 인하여 많은 학자들에 의하여 FSC가 승인을 받았다. 오늘날에는 유동을 둘러싸고 있는 상재세포가 내피세포, 성세포 및 FSC의 3종임이 인증이 되었다. 이 세포의 미세구조상의 특징은 기저막이 없는 공허한 세포로 보이나 항상지방적(空胞)을 보유하고 잘 발달한 조면소포체를 가지며 유동내피면에 따라 분기확산하는 돌기를 가지고 있다. 그리고 세포체는 유동주위강을 달리는 무수신경직유의 varicosity (사립체 및 신경결합소포를 함유한 신경종말)와의 사이에 adrenalin 작동성 synaps를 형성한다. FSC의 기능적 의의는 ㄱ, 간소엽내 교원직유형성에 참여 ㄴ. 유동내피하 돌기는 내피를 외측에서 지지하고 보강하며 또한 유동을 둘러싸고 연장하는 돌기는 수축하여 유동강을 축소한다. ㄷ. 지방을 저장하여 간세포의 energe원을 공급하며 VitaminA를 그 속에 저장한다. ㄹ. 간의 해독작용에 관여한다.

• The monthly packaging world
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• s.248
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• pp.74-79
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• 2013

• Proceedings of the Korean Society for Applied Microbiology Conference
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• 1974.06a
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• pp.124.3-124
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• 1974

규정농도의 $NH_4OH로$ 처리한 볏짚을 기질로 분리ㆍ동경 한 섬유소 자화세균 Cellulomonas flavige na KIST 321 및 C. aurogena nov species KIST 11을 배양하여 구체단백을 생산할 때 최적 조건을 살펴 본 결과 다음과 같다.(중략)

• Proceedings of the KIEE Conference
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• 1995.07c
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• pp.1304-1306
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• 1995

In this study, a neural network algorithm through a data standardization method was developed to discriminate the phase-shifted partial discharge(PD) patterns such as a $\phi$-q-n pattern. Considering the PD measurement in the field, it is not so easy to acquire absolute phase angles of PD pulses. As a consequence, one of the significant problems to be solved in applying the neural network algorithm to practical systems is to develop a method that can discriminate phase-shifted $\phi$-q-n patterns. Therefore, authors established a new method which could convert phase-shifted $\phi$-q-n patterns to a standardized $\phi$-q-n pattern which was not influenced by phase shifting. This new standardization method improved the recognition performance of a neural network for the phase-shifted $\phi$-q-n patterns considerably.

• Journal of the Korean Institute of Telematics and Electronics
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• v.17 no.4
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• pp.1-10
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• 1980

A method to control the speed of D. C. motor with microprocessor is discussed in this paper, The system consisting of TTL and microprocessor measures the actual speed and compares it with a reference set speed and the error is used to control the speed of the D. C. motor. The steads - state error is less than 0.5% of maximum speed and this can be reduced with more exact measure of actual speed.

• English Language & Literature Teaching
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• v.9 no.spc
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• pp.61-78
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• 2003

The purpose of this article is to examine the role of similarity in the metaphor and simile preference and offer empirical evidence against the equivalence view of simile and metaphor. This evidence was obtained from two experiments to examine the correlation between the similarity ratings and the preference ratings. The results suggest that Korean people choose the metaphor form when the similarity of a target and a source increases, whereas they choose the simile form when the similarity of a target and a source decreases. The results from these experiments are consistent with Chiappe and Kennedy's (1999, 2001) findings. Moreover, the experiments found that Korean people were more likely to express particular comparisons as similes over metaphors than American people.

• Journal of the Korean Institute of Telematics and Electronics
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• v.20 no.5
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• pp.31-36
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• 1983

The indirect M.R.A.C. method using the W.L.S. algorithm is applied to the speed control of a D.C. motor on the assumption that the motor is the 1-st order, completely controllable and observable, non-minimum phase plant. By the help of M6809 microprocessor system the experiments are performed with respect to the sinusoidal and square reference input. The results show that the speed of a D.C. motor is well controlled by the indirect M.R.A.C. method using W.L.S, algorithm, and that the W.L.S. algorithm is quite suitable to the time-varying plant.

• The Transactions of the Korean Institute of Electrical Engineers
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• v.32 no.2
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• pp.50-58
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• 1983

In this paper, a field trial of the Korean-made optical fiber communication system is described. This system was installed between Gu-Ro and Ann-Yang telephone offices on November 1981, and carries a 44.7Mb/s NRZ signal(672 voice channel equivalent). For this trial, optical fiber cable, optical terminal equipment, optical repeater, fusion splicer and measurement equipment have been developed. Employing graded index optical fiber at a wave length of $0.85\;\mu\textrm{m}$, average optical attenuation and splicing losses of 3.6 dB/km and 0.4 dB, resectively, were realized. With link margins of 8~20dB and bit error rate of less than $10^{-10}$, this system has been carrying live traffic between Seoul and Ann Yang telephone offices.

• The Transactions of the Korean Institute of Electrical Engineers
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• v.37 no.2
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• pp.130-137
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• 1988

The technique of dual-input describing function's synthesis is introduced and the construction of a nonlinear compensator, based on this technique, is proposed. A nonlinear compensator, describing a complex DIDF depending upon amplitude of the second sinusoidal input signal only, is also proposed, where the second sinusoidal input signal is supplied to the nonlinear compensator by external generator. This compensator, connected in a closed loop of the PI speed control of DC motor, can improve the speed response in view instability limit cycle, low speed response and disturbance of the dynamic shift of the Nyquist's critical point -1 + j O. It is verified theoretically that the improvement of speed response of DC motor using the proposed compensator is achieved by means of the dynamic shift of the Nyquist's critical point on the complex plane, and the speed characterstics of DC motor is to be tested through experiment for its performance.

• MALSORI
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• no.60
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• pp.85-96
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• 2006

The aim of the present study was to investigate a simile comprehension of children with and without mental retardation. Thirteen children with mental retardation and ten normal children with matched receptive vocabulary ability participated in the study. They were between five and eight years old in the age of receptive vocabulary. Fourteen picture plates were used and each plate consisted of three pictures. The findings were as fellows. First, children with mental retardation made significantly more errors than normal children in the comprehension of simile. Second, mental retarded children and normal children did not have a significant correlation between receptive vocabulary development and comprehension of simile. Finally, on simile interpretation type, children with mental retardation were likely to think a tenor into a vehicle because they failed to recognize the syntactic structure of simile, 'A is like B'. Thus, It is important to teach mental retarded children the syntactic structures of simile and to provide them with a variety of experience as well as to let them know an exact meaning of words.