DRNS용 SRTFR 변환기 설계에 관한 연구

김용성,Kim, Young-Sung 한국정보기술전략혁신학회 2009 情報學硏究 Vol.12 No.2

Residue Number System is used for the purpose of increasing the speed of processing in the many application parts of Image Processing, Computer Graphic, Neural Computing, Digital Signal Processing etc, since it has the characteristic of parallelism and no carry propagation at each moduli. DRNS has the twice RNS Conversion, it is used to decreases the size of the operator in RNS. But it has a week point on the Second Residue to First Residue Conversion time. So, in this paper SRTFR(Second Residue to First Residue) Converter using MRC(Mixed Radix Conversion) is designed to decrease the size of RTB(Residue to Binary) Converter. Since the proposed SRTFR Converter using MRC(Mixed Rdix Convertion) has a pipeline processing. Also, modular operation is applied to at each partitioned SAM(Subtraction and Addition) and MA(Multiplication and addition). In the following study, the more effective design on MA is needed.

GIS를 이용한 도로 사면의 위험성 분석

김용성,Kim , Yong-Seong 한국농공학회 2004 한국농공학회논문집 Vol.46 No.5

A risk analysis on the cutting slope of roads near Cheongju area was carried out with the data from geological map, field investigation, and laboratory test and with the Geographic Information System. A risk analysis method on the cutting slope of road using the Geographic Information System was developed with the data from geological map, field investigation and laboratory tests. In the GIS, road factors which are safety factor, class of road, slake index, slope-protection works, and height of slope in the cutting slopes are classified into some ranks, and their weighting factors were taken into account. This method can be applied effectively to a road management.

인공신경망기법을 이용한 중심차수벽형 석괴댐의 정부침하량 예측

김용성,김범주,오상은,Kim, Yong-Seong,Kim, Bum-Joo,Oh, Sang-Eun 한국농공학회 2012 한국농공학회논문집 Vol.54 No.4

In this study, the settlement data of 32 center cored rockfill dams (total 39 monitored data) were collected and analyzed to develop the method to predict the crest settlement of a CCRD after impounding by using the internal settlement data occurred during construction. An artificial neural network (ANN) modeling was used in developing the method, which was considered to be a more reliable approach since in the ANN model dam height, core width, and core type were all considered as input variables in deriving the crest settlement, whereas in conventional methods, such as Clements's method, only dam height is used as a variable. The ANN analysis results showed a good agreement with the measured data, compared to those by the conventional methods using regression analysis. In addition, a simple procedure to use the ANN model for engineers in practice was provided by proposing the equations used for given input values.

가감대보탕(加減大補湯)이 백서(白鼠)의 갑상선기능저하증(甲狀腺機能低下症)에 미치는 영향(影響)

김용성,김철중,Kim, Yong-Seong,Kim, Cheul-Jung 대한한방내과학회 1994 大韓韓方內科學會誌 Vol.15 No.2

To study the effect of Kamidaebotang on the hypothyroidism induced by thiourea in SD(Splague Dawley) rats, the weight of thyroid gland, the level of serum $T_3\;and\;T_4$. total cholesterol, hematological changes and histopathological findings were measured. The following results were obtained. 1. Thyroid gland weight of the Kamidaebotang B treated group was significantly increased as compared with that of control group(p<0.05). 2. The level of serum $T_3$ of the Kamidaebotang B treated group was slightly increased as compared with that of control group. But no significant changes appeared between two groups. 3. The level of serum $T_4$ of the Kamidaebotang A, B treated groups were significantly increased as compared with that of control group(p<0.05). 4. Total cholesterol of the Kamidaebotang A, B treated groups were not significant changes as compared with that of control group. 5. Hematological data of the Kamidaebotang A, B treated groups were not significant changes as compared with that of control group. 6. Histopathologically, Kamidaebotang B administration recovered effectly the dystropy, degeneration of thyroid follicle induced by thiourea. From above results, it is suggested that Kamidaebotang B is available to the hypothyroidism induced by thiourea in rats. Therefore, Kamidabotang B seems to be applicable to hypothyroidism in clinical practice.

그래픽 디스프레이에 적합한 Cosine, Sine함수 발생기 설계에 관한 연구

김용성,Kim, Yong-Sung 한국정보기술전략혁신학회 2005 情報學硏究 Vol.8 No.3

Cosine and Sine function is widely used for the arithmetic, translation, object drawing, Simulation and etc. of Computer Graphics in Natural Science and Engineering. In general, Cordic Algorithm is effective method since it has relatively small size and simple architecture on trigonometric function generation. However profitably it has those merits, the problem of operation speed is occurred. In graphic display system, the operation result of object drawing is quantized and has the condition that is satisfied with rms error less than 1. So in this paper, the proposed generator is composed of partition operation at each ${\pi}/4$ and basic Cosine, Sine function generator in the range of $0{\sim}{\pi}/4$ using the lower order of Tayler's series in an acceptable error range, that enlarge the range of $0{\sim}2{\pi}$ according to a definition of the trigonometric function for the purpose of having a high speed Cosine, Sine function generation. And, division operator using code partition for divisor three is proposed, the proposed function generator has high speed operation, but it has the problems in the other application parts with accurate results, is need to increase the speed of the multiplication.

CRT를 사용한 잉여수계 기수확장에 관한 연구

김용성,Kim Yong-Sung 한국정보기술전략혁신학회 2002 情報學硏究 Vol.5 No.4

The Extension of Base is a fundamental Method to expend the moduli in RNS(Residue Number System). RNS has the benefit of parallelism and no carry propagation at each moduli, but division , extension of base and etc. is the problem of RNS in case of the operation speed.Generally this method is applied to system using Mixed Radix Conversion. it appears to decrease the size of Arithmetic Unit, but increasing the time of operation. So in this paper, the Improved Extension of Base is proposed using Chinese Remainder Theorem. it has the comparative small size and Improved speed.

소(少) 제수용 잉여수계 제산 연산기 설계에 관한 연구

김용성,Kim, Yong-Sung 한국정보기술전략혁신학회 2004 情報學硏究 Vol.7 No.2

잉여수계를 사용한 연산기는 디지털 신호처리, 컴퓨터 그래픽 등에 있어서 여러가지 장점을 갖으므로 전용 프로세서 설계에 사용되고 있다. 그러나 크기 비교와 일반적인 제산에 있어서 단점을 갖는다. 본 논문에서 제안된 연산기는 곱의 역을 사용한 제산의 결과가 나머지를 갖는다면 현재 제수에 의해 산출된 몫의 최대 값보다 큰 값이 발생되는 조건을 반복연산의 종결조건으로 사용하였으며, 몫의 비교를 대응된 제수 값으로 대신하였다. 그러므로, 설계된 연산기는 작은 크기의 제한된 제수를 사용하는 제한점은 갖지만, 컴퓨터 그래픽의 스케일링 등에 적용하는 경우 연산기의 크기 및 속도가 우수한 제산 연산기로 사용할 수 있다.

학문분야간의 코뮤니케이션 유형

김용성,Kim Yong Sung 한국문헌정보학회 1990 한국문헌정보학회지 Vol.18 No.-

This study attempts to verify the hypothesis that the interdisciplinary communication patterns may be different according to each disciplines. To put it concretely, it is intended to analyze and compare the subject distribution, the format, the age, the origin and the language of the documents of other disciplines cited in the journal articles according to each disciplines. To test the hypothesis philosophy, sociology and physics as the sample for the three disciplines, that is, humanities, social sciences, and natural sciences are sellected, and the documents cited in the journal articles published in 1966, 1971. 1976, 1981 and 1986 by the Korean Philosophical Association, the Korean Sociological Association and the Korean Physical Society are collected. And then the subject distribution, the format, the age, the origin, the language, and their use rate of the documents of other disciplines cited in the journal articles are investigated, analyzed and compared according to each disciplines. Some findings and conclusions made in the study are as follows. 1. The subject distribution of documents of other disciplines cited and its distribution ratio are different according to each disciplines, that is, humanities high, natural sciences low and social sciences medium. 2. The format and the use rate of documents of other disciplines cited are different according to each disciplines. In the three disciplines book and journal are more used than any format of documents in interdisciplinary communication while in case of the humanities and social sciences book is more used than journal, and in case of the natural sciences journal is more used than book in that communication. 3. The age and the use rate of the cited documents of other disciplines are different according to each disciplines. In case of the social sciences and natural sciences the documents of its last 20 years of publication are cited concentrately, and in case of the humanities the literature age is unconcerned. 4. The origin and the language of the cited documents of other disciplines, and its use rate are different according to each disciplines. In the humanities and natural sciences the documents published in foreign country are cited concentrately, and in the social sciences the home publication documents are more cited than the foreign. The documents of other disciplines in English language are most cited among the documents in any foreign languages in interdisciplinary communication. Putting the three disciplines in order of the use rate of the documents in English language, the natural sciences is high, the humanities medium, and the social sciences low. In the social sciences the use rate of the documents of other disciplines in Korean language is high while in the humanities and natural sciences slight.

육미지황탕(六味地黃湯)이 Alloxan으로 유발(誘發)된 생쥐의 당뇨병성(糖尿病性) 신증(腎症)에 미치는 영향(影響)

김용성,서수환,Kim, Yong-Sung,Seo, Soo-Hwan 대한한방내과학회 2005 大韓韓方內科學會誌 Vol.26 No.4

This study was done to investigate recovery effects of YJT, which has been used clinically in diabetes therapy. Mice were administerd Alloxan to induce diabetes. There body weight and kidney weight changes, BUN, creatinine, glucose, total protein and ALP activity in serum, urinalysis, excretion volume of Na+, K+ in urine were measured. The results were as follows: 1. Increase in body weight and kidney weight and the ratio of kidney to body weight of YJT treated group showed similar results with those of normal group. 2 The BUN, creatinine, ALP activity levels in serum of YJT treated group were similar with those of normal group. 3. The glucose level in serum of YJT treated group was better than that of control group 4. The result of the urinalysis in the group of YJT was almost same as that of control group The above results suggest that YJT partially improves the function of the kidney.

반응성 RF 마그네트론 스퍼터링 법을 이용한 AIN/SiC 구조의 제작 및 특성

김용성,김광호,Kim, Yong-Seong,Kim, Kwang-Ho 한국전기전자재료학회 2005 전기전자재료학회논문지 Vol.18 No.11

Al/AlN/n-type 6H-SiC (0001) MIS structures were prepared by AlN layers on vicinal 6H-SiC(0001) substrates with reactive RF magnetron sputtering method. The AlN films were annealed at $900^{\circ}C$, $N_2$ atmosphere lot 1 minutes showed the best result. With XRD analysis, AlN(0002) peak was clearly found. The typical dielectric constant value of the AlN film in the MIS capacitors was obtained as 8.4 from photo C-V. Also, the gate leakage current density of the MlS capacitor was $10^{-10}\;A/cm^2$ order within the electric field of 1.8 MV/cm. Finally, the amount of interface trap densities, $D_{it}$, was evaluated as $5.3\times10^{10}\;eV^{-1}cm^{-2}$ at (Ec-0.85) eV.