주메모리 실시간 저장 시스템의 객체지향 설계

차상균(S. K. Cha),박병대(B. D. Park),박장호(J. H. Park),이성직(S. J. Lee),송세혁(S. H. Song),박순영(S. Y. Park),김경백(G. B. Kim) 한국정보과학회 1995 한국정보과학회 학술발표논문집 Vol.22 No.2A

최근 전자통신, 공정 제어, 가상현실 등과 같은 다양한 분야에서 데이타베이스에 대한 실시간 접근이 요구되고 있다. 대용량 메모리의 출현으로 가능하게 된 주메모리 DBMS는 디스크 기반 DBMS에 비하여 상대적으로 빠른 데이타 접근과 균일한 성능 분포 특성을 가지므로 실시간 응용분야를 보다 잘 지원할 수 있을 것으로 기대된다. 본 논문에서는 주메모리 실시간 DBMS인 M²RT의 전체 구조와, 이외 저장 시스템인 M²RTSS의 객체지향 설계에 대하여 기술한다. M²RTSS에는 실시간 트랜잭션 스케쥴링, 동시성 제어, 회복 관리 등의 DBMS 필수 기능을 지원하기 위한 클래스가 정의되어 있고 구현에 대한 구체적인 정보는 클래스 내에 캡슐화되어 있으므로, 상속을 통하여 쉽게 확장될 수 있다. 따라서 M²RTSS가 DBMS 분야의 연구 성과 및 새로운 응용분야의 요구조건을 쉽게 수용할 수 있을 것으로 기대된다.

HMM을 기본으로한 집단화 방법의 불특정화자 단어 인식에 응용

임현,박순영,방만원,Lim, H.,Park, S.-Y.,Park, M.-W. 한국음향학회 1995 韓國音響學會誌 Vol.14 No.5

본 논문에서는 단어를 발음하는 방법 이 각각 다른 화자들의 변이성을 잘 흡수하도록 복수개의 통계적인 모델들을 구성하기 위하여 HMM을 기본으로 하는 집단화 방법을 제시한다. 또한 개발된 방법으로부터 얻어진 HMM집단화된 모델들이 불특정화자 고립단어 인식에 응용된다. HMM 집단화 방법은 학습용 데이타로부터 어떤 경계치 보다 낮은 유사도를 갖는 관측열들을 분리하여 새로운 집단을 만들고 이 집단내에 있는 관측열들을 이용하여 새로운 모델들을 학습시키는 방법이다. 집단화 과정은 반복되는데 최고의 유사도를 갖는 모델의 집단에 관측열들을 재분배하고 집단내 관측열들이 변화하면 새로운 모델을 재 추정하여 기존의 모델을 대신한다. 그러므로 이 집단화 방법은 집단화 과정과 파라미터 추정이 일체화되어 기존의 패턴에 의한 집단화 방법보다 더욱 효율적이 된다. 실험결과 HMM에 의한 집단화 방법이 기존의 패턴에 의한 집단화 방법보다. 고립 숫자음 인식에 있어서 $1.43\%$의 인식률을 향상시킬 수 있었으며 단일 모델의 사용보다는 $2.08\%$의 인식률이 향상되었다. In this paper we present a clustering procedure based on the use of HMM in order to get multiple statistical models which can well absorb the variants of each speaker with different ways of saying words. The HMM-clustered models obtained from the developed technique are applied to the speaker independent isolated word recognition. The HMM clustering method splits off all observation sequences with poor likelihood scores which fall below threshold from the training set and create a new model out of the observation sequences in the new cluster. Clustering is iterated by classifying each observation sequence as belonging to the cluster whose model has the maximum likelihood score. If any clutter has changed from the previous iteration the model in that cluster is reestimated by using the Baum-Welch reestimation procedure. Therefore, this method is more efficient than the conventional template-based clustering technique due to the integration capability of the clustering procedure and the parameter estimation. Experimental data show that the HMM-based clustering procedure leads to $1.43\%$ performance improvements over the conventional template-based clustering method and $2.08\%$ improvements over the single HMM method for the case of recognition of the isolated korean digits.

국부적 통계성을 이용한 웨이블렛 영역에서의 잡음 제거

임현(H. Lim),박순영(S. Y. Park) 대한전자공학회 1999 대한전자공학회 학술대회 Vol.1999 No.6

쑥속식물의 정유추출 부산물을 활용한 버섯재배 연구

장매희(Chiang M.H.),이지선(J.S. Lee),백생글(S.G. Baek),권혜진(H.J. Kwon),박순영(S.Y. Park),공원식(W.S. Kong) 한국생물환경조절학회 2006 한국생물환경조절학회 학술발표논문집 Vol.15 No.2

韓國人의 標準體重値와 正常適應體重値에 關한 硏究

金大棒(Kim D.B.),尹太永(Yoon T.Y.),崔重明(Choi J.M.),朴淳永(Park S.Y.) 한국보건교육건강증진학회 1996 보건교육건강증진학회지 Vol.13 No.1

신경회로망을 이용한 용접공정변수와 비드폭과의 상관관계에 관한 연구

김인주(I. J. Kim),박창언(C. U. Park),김일수(I. S. Kim),박순영(S. Y. Park),정영재(Y. J. Jeong),임현(H. Lim),박주석(J. S. Park) 한국정밀공학회 2000 한국정밀공학회 학술발표대회 논문집 Vol.2000 No.10월

러시아와 우크라이나의 액체로켓엔진 개발 동향

김철웅(C.W. Kim),조원국(W.K. Cho),박순영(S.Y. Park),설우석(W.S. Seol) 한국항공우주연구원 2010 항공우주산업기술동향 Vol.8 No.2

본 논문은 케로신 액체로켓엔진에서 세계 최고의 기술력을 갖고 있는 러시아와 우크라이나의 액체로켓 엔진 개발과정 및 동향을 살펴보았다. 구소련에서는 1960년대에 closed cycle을 채택하여 엔진의 연소압과 비추력을 최대한 높이는데 주력하였다. 그러나 1990년대 이후 경제적으로 어려워지면서 새로운 엔진개발에 드는 비용을 최소화하고 있으며, 이를 위하여 유사업종의 업체 간의 합병을 진행했고, 새로운 엔진개발에 기존의 부품을 최대한 사용하거나 시험-개선과정의 합리화를 통하여 시험엔진개수와 시험횟수를 줄이고 있다. 또한 국제 협력을 통하여 우주발사체시장에서 상업용 로켓을 위한 엔진 납품을 증가시키고 있다. 더불어 3성분이나 메탄 엔진 등 차세대 엔진 개발에도 주력하여 액체로켓엔진의 선두주자로서의 지위를 유지하려는 노력이 계속되고 있다. This paper treats with the history and current trends in the developments of liquid-propellant rocket engine in Russia and Ukraine which are among world leaders in the technology of liquid rocket engine(LRE). In 1960s formerly the Soviet Union accepted the closed cycle engine for increasing the pressure in the combustion chamber and specific impulse to the maximum. However, since financially difficult times after 1990, they have decreased the cost for the development of new rocket engines. It was achieved by using existing units for new developed engines and minimizing the total number of engines and tests through the reasonable planning in the process for the experimental improvement of LRE. In addition, nowadays international cooperation in supplying LRE for commercial rocket and development of next generation LRE, such as 3 components engines and mathane engines, are proceeding.

韓國人의 標準體重値와 正常適應體重値에 關한 硏究

尹太永,崔重明,朴淳永,金大棒 韓國保健敎育學會 1996 보건교육건강증진학회지 Vol.13 No.1

Using Random Sampling, the authors measured the body heights and weights of 31,151 persons- 17,102 in males and 14,049 in females from metropolitan, urban and rural areas between 6 to over 80 year old - for the purpose of investigating the type and the actual condition of the Korean's growth and development. At first, on the basis of the results, the authors measured the growth and development, various kinds of physiques, nutritional index of the 6 to 20s age group. Second, the authors presented the standard body weight of males and females by their body height, who were in the end of their growth (20-29 age group). Third, the authors calculated and presented the normal adapted body weight of the age group who were over 30 age after the growth had been completed. Forth, the author presented the obesity rate of the adults over 20 years old by body mass index. Finally, the authors compared chronological change of the Koreans' body heights and body weights with the results of other researchers. 1. Body Measurement Rapid growth, in terms of body height, which is described by a straight line on a growth curve has been observed among males in the ages 6-13 and among females 6-14. That growth curve turned out to be slower among the people of higher ages by both sexes. The cross-over occurred in both sexes at 11-14. The highest growth rate for a year is at 13-16 for males and 11-13 for females. This indicates that females enter a rapidly growing stage 2 years earlier than males. 2. Various Physiques and Nutritional Index Rapid growth, in terms of Relative Body Weight Index, which is described by a straight line, has been observed among males in the ages 6-16 and females in the ages 6-14. The cross-over occurred in both sexes 12.5-14.5 age in the adolescencent period. Whereupon females outgrow males. The Roher Index displayed more good value in case of females than male and in the adolescent period, the level of fullness is lower than after the completion of development. The Kaup Indices of both sexes increase with age. The index is less than 2.0 for males in 6-14 age group and for females in 6-13 age group and with this, it appeared that development of horizontal axis to long axis is poor. The index is more than 2.0 after 15 age group in males and 14 age group in females and developmental state4 age group and for females in 6-13 age group and with this, it appeared that development of horizontal axis to long axis is poor. The index is more than 2.0 after 15 age group in males and 14 age group in females and developmental state. Body Mass Index is less than 20 for males 6-14 age group and for females in 6-13 age group. In the case of the higher age group, that index maintains a normal state. 3. Average Body Height, Body Weight and Desirable Body Weight of Korean Youth (20-29 Age Group) The average body weight and body height of full-grown Korean youth was 172.5 ± 5.4㎝ and 66.3 = 9.5㎏ for male, 159.3 ±4.6 ㎝ and 53.5 ±6.9 ㎏ for females. In the case of calculating Desirable Body Weight of Korean youth, correlation coefficient of r = + 0.38(p < 0.001)between body height and body weight was found the male group and r = + 0.37(p < 0.001) in the female group, from which respective linear regression equation of body weight and height was established for male and female as follows; Male : Y(Body Weight, ㎏) = 0.66 x (Body Height, ㎝) - 48.93 Female :Y(Body Weight, ㎏) = 0.56 x (Body Height, ㎝) - 36.01 4. Formulae for calculating Normal Adapted Body Weight of Korean Adult. ⅰ)Average body height and body weight by age-groups 30-39 age-group Male : 170.4 ±4.9㎝ and 67.6 ±8.1㎏ Female : 158.5 ±3.9㎝ and 53.6 ±6.0㎏ 40-49 age-group Male : 169.1 ±4.9㎝ and 68.0 ±8.5㎏ Female : 157.3 ±4.7㎝ and 56.8 ±7.7㎏ 50-59 age-group Male : 168.1 ±6.8㎝ and 66.0 ±8.1㎏ Female : 157.2 ±4.7㎝ and 57.3 ±7.1㎏ 60-69 age-group Male : 168.0 ±5.3㎝ and 46.7 ±8.7㎏ Female : 155.2 ±5.0㎝ and 56.2 ±9.1㎏ Over 70 age-group Male : 166.1± 6.5㎝ and 62.8±1.2㎏ Female : 152.8 ±5.3㎝ and 52.8 ±8.5㎏ ⅱ) Correlation Coefficient and Linear Regression Equation by Age-groups 30-39 age-group Male : r=+0.44(p<0.001), Y=0.73X-57.94 Female : r=+0.45(p<0.001), Y=0.68X-55.52 40-39 age-group Male : r=+0.54(p<0.001), Y=0.93X-89.92 Female : r=+0.41(p<0.001), Y=0.67X-50.52 50-59 age-group Male : r=+0.32(p<0.001), Y=0.38X-1.22 Female : r=+0.37(p<0.001), Y=0.55X-29.76 60-69 age-group Male : r=+0.51(p<0.001), Y=0.83X-74.84 Female : r=+0.39(p<0.001), Y=0.70X-53.06 over 70 age-group Male : r=+0.63(p<0.001), Y=1.10X-119.96 Female : r=+0.40(p<0.001), Y=0.63X-44.64 Standard Body Weight and Normal Adapted Body Weight of Korean Adult by Age. Using respective regression equation, standard body weight<Table 10, 11>, normal adapted body weight <Table 12~21>, overweight and underweight of the Korean Adult was established for each age group. 6. Obesity Rate of Korean Adult Obesity rate of Korean adult was 9.4% (Male: 9.9%, Female : 8.4%). 7. The Chronological Change on Mean Values of Body Height and Body Weight in Korean Adult The Comparison with the mean values of body height and weight from 1910s to the present 1994 was been remarkably improved, and listed in <Table 23>.

CIO 필터를 이용한 칼라영상의 향상에 관한 연구

박순영,오성훈 木浦大學校 情報産業硏究所 1998 情報産業硏究誌 Vol.6 No.-

In this paper, we propose a color image enhancement algorithm that can suppress additive noise while preserving signal edges. The algorithm, called color-intensity ordering(CIO) filter, consiste of color vector ordering and intensity scalar ordering in a cascade framework. At the first step, the CIO filter applies the vector ordering operation to the set of image vectors in a two dimensional hue-saturation(HS) space aiming at eliminating vectors with atypical color information. Next, the scalar, ordering opoeration is applied to the intensity components of the retained vectors with similar color information to produce a median as the final output of the CIO filter. Therefore, the characteristics of the CIO filter is to utilize the color vector ordering in HS space and the intensity scalar orderingb in I space separately to process the color image vectors in three dimensional HSI space. The ecperimental results show that the CIO filter is effective in suppressing additive noise while preserving signal edges.

지능화된 무인감시시스템을 위한 침입자 추적 알고리즘에 관한 연구

장국렬,박순영 木浦大學校 情報産業硏究所 1997 情報産業硏究誌 Vol.5 No.-

In this paper, an effective moving object tracking algorithm which can detect motion of moving objects from the image sequences taken by a CCD camera and predict moving direction and velocity of moving objects is presented for an intelligent and unmanned surveillance system. First, the proposed algorithm detects moving objects and computes movements by applying a differential operation to the image frames. Secondly, the motion vector and center of a moving objects are measured by using 2-step block matching algorithm. Finally, the algorithmtracks an intruder by predicting moving direction and velocity from the accumulated motion vector. The computer simulation is carried out to analyze the performance of the proposed algorithm. The results show that the algorithm can track a walking man and a running man effectively.