한방청열제의 3α-Hydroxysteroid dehydrogenase에 대한 억제효과

안중수 강원대학교 종합약학연구소 1999 약학연구 Vol.11 No.-

導體의 表皮效果에 對한 解析

安重守 충주대학교 1978 한국교통대학교 논문집 Vol.11 No.1

Uniform distribution of curent throughout the cross section of a conductor exists only for D.C. As the frequency of alternating current increases, the nonuniformity of distribution becomes more pronounced. An increase in frequency causes nonuniform current density. This phenomenon is called skin effect. In a circular conductor the current density usually increases from the interior toward the surface. Nonuniformity of flux linkage is the cause of skin effect. At high frequencies and for wires of lerge radius, skin effect materially alters both the resistance and reactance. The internal impedance of a conductor is that part of the impedance of the circuit due to the resistance of the conductor and the flux linkages produced by flux inside the conductor, it's composed of resistance and inductive reactance.

Thyristor位相制御에 依한 Motor 速度制於에 關한 硏究

安重守 忠州大學校 1976 한국교통대학교 논문집 Vol.8 No.1

Using a Thyristar with 4 Rectifing elements, we can get the well-known phase control mathode which is simple construction and have no pulse transformer and no protector for the own current. Appling this methode. I got an automatic control set of motor speed. In my set, the optical pick-up and an one-shot multivibrator is used as the speed detecting device, Still more, in this paper I published the formula between the motor speed and the motor input.

부분대역 재밍하에서 열잡음과 오류정정 부호를 고려한 FH/MFSK 시스템의 성능 분석

안중수,곽진규,강찬석,박진수 청주대학교 산업과학연구소 1992 産業科學硏究 Vol.10 No.-

In this paper, the performance is analyzed in noncoherent frequency hopping-frequency shift keying(FH/FSK) system in which the error correcting codes are adopted and thermal noise is cosidered under the partial-band jamming interference. In consideration of thermal noise under the partial band jamming, the system performance is analyzed by applying the closed-from of error probability. As a result, it is shown to be valid via the computer simulation that the more is K and E_(b)/N_(o), the less is error probability. The error performances of binary correcting codes which adopt the uncording method, block coding and convolutional coding methods are analyzed to be evaluated in worst case of the partial band jamming interference. Among the three coding methods, it is proved that the best performance of bit error probability is found in the convolutional code(rate : 1/8). These results may be useful for avoiding the common vulnerabilities when the spread spectrum system is designed.

FH/SS �신 시스텡에 대한 주파수 다이버시티 기법

安重守 忠州大學校 1998 한국교통대학교 논문집 Vol.33 No.2

This paper proposes the frequency diversity for a phase-coherent frequency-hopping spread spectrum system. The frequency band of the communicator is partitioned into L disjoint subbands on which L replicas of the communicator signal are simultaneously transmitted ; each signal replica hops independently in its subband. Therefore, both phase continuity and coherent optimal combining of the received replicas are possible. Optimum diversity is thus at least 6[dB] better than the noncoherent FH/SS system.

Microprocessor로 제어되는 Thyristor 스위치

安重守 충주대학교 1984 한국교통대학교 논문집 Vol.18 No.1

Using μ- processor for digitol waveform control of power inverters Such as PWM inverters makes it possible to provide flexible waveform control. This includes selective control or elimination of higher harmonics to solve the wave form problems, thereby providing a flexible control system design that is almost impossible with conventional analog control systems. It has Varions merits, eogo, different characteristics can readly be realized by simply replacing the memory or changing the software program. Development of thyristor circuits has evolved around each circuit function or more often in accordance with the application field. The basic componento of most actine circuits canbe represented by the three - terminal switch (fig.12) This type of three - terminal switch designed To be turned on or off by μ- Processor software has superior general applicability as a thyristor circuit Elemint. Including the control circuit this will be called "Thyristor switch"

碍子表面의 電壓分布에 對한 硏究

安重守 충주대학교 1977 한국교통대학교 논문집 Vol.10 No.1

It was important to study on dynamic voltage distribution on contaminated insulator surfase as the basis of insulator design. Dynamic voltage distribution on an insulator unit was investigated before and during Scintillation activity. A symple method for measurments of voltage distribution was successfully developed. It was observed that some parts of the leakage distance do not function during scintillations, and there-fore the Concept of "effective leakage distance" was introduced. A good Correlationship between "effective leakage distance" and flashover voltage was found. This work is only a first step in determining the relationship between insulator design and performance at all voltage levels.

강자성체에서의 이동 자계에 관한 고찰

김용주,안중수 忠州大學校 1971 한국교통대학교 논문집 Vol.4 No.2

The analysis of this paper is based on the fundmental assumption that th component of the magnetizing force along the thickness of the blook is zero everywhere inside. The expressions for the eddy current loss and flux penetration thu obtained are expressed as sets of normalized curves to cover all ranges of the thickness of frerromagnetic plato and the freqnency. The analysis assorts the existence of a deeply penetration component of flux even in the case of solid iron rotor induction machines for which the thickness of the ferromagnetic plate is quite large. Extensiue test results are available in the literature for the tooth ripple phenomenon. The class agreement obtained between the experimental results and the computed values based on the analysis is believed to provide substantial evidence in support of the basic assumption made.

부분대역 재밍하에서 자동검파를 이용한 FH/CPFSK 시스템의 성능분석

安重守,鄭根烈 충주대 산업과학기술연구소 1995 産業科學論文集 Vol.3 No.-

In this paper, the performances of FH/CPFSK system have been analyzed for thermal noise, partial-band jamming noise and adjacent interference of all eight bit pattern. The parameters to anlalize performances of FH/CPFSK system have been used the bit rate, modulation index and performances of FH/CPFSK system with the differential detector and with limiter-discriminator have been presented with optimum correlation function. In result, we can find that bit error probability of the approximation equation and the exact equation is nearly accorded in the high signal-to-noise ratio. And, ibis proved that FH/CPFSK system with differential detection according to jamming fraction γ was worst to 3dB than FH/CPFSK system with limiter-discriminator.

AWGN하에서 DS/SS-QPSK 초기동기 시스템 성능 분석

안중수,홍성원 충주대 산업과학기술연구소 1997 産業科學論文集 Vol.5 No.-

It is important that to search the phases of the between received code and local code in spread spectrum communication system is decided the performance of system. In this paper, the morkovian chain property is used for the synchronization phase acquisition of DS/SS-QPSK system on the AWGN using the serial search fixed in low SNR and the PN codes which have large process gain. In result, We was analysis the SNR, detector threshold, chip false alarm probability, detection probability, mean acquisition time.