Full Search ME를 위한 SIMD 처리기

박춘자,백순흠 공주영상정보대학 1998 논문집 Vol.5 No.-

본 논문에서는 일반적인 Full Search Motion Estimation 알고리듬을 가지고 SIMD 구조를 사용하여 초고속의 MPEG-2에 사용될 수 있는 고속의 움직임 추정 병렬처리기를 구성하여 영상처리 및 전송 시스템의 속도 향상을 보여 준다. 제안된 처리기는 초당 7장에서 8장 사이의 영상화면을 전송시켜 줄 수 있으며 이 정도의 속도면 변화가 너무 크지 않은 영상 서비스에서는 적당하다 필요하다면 속도향상을 위해서 움직임 추정 병렬처리기의 PE 수를 간단히 증가시킬 수 있으며, 이때 변화되는 구조에 쓰일 Park's 기억장치의 구조도 별 어려움 없이 변화시킬 수 있고, 다른 부분들도 쉽게 조정할 수 있다. 제안된 SIMO 처리기의 256개 PE를 512개로 늘리면 속도 향상이 2배 이상 증가 될 수 있다. 설계된 초고속 영상자료의 움직임 추정 병렬처리기에 자료접근이 다양한 픽셀간의 간격은 물론이고 행, 열, 블록 등 다양한 형태가 가능한 Park's 기억장치가 결합된 이 처리기는 MPEG이 사용되는 여러 응용분야를 포함한 첨단 영상 통신 시스템의 개발과 제작을 촉진시켜 줄 수 있을 것이다. 여러 종류 영상의 실시간 SIMD 처리가 이루어짐으로써 영상 자료와 전송, 저장 및 처리 속도가 크게 향상 될 수 있으며 그 동안 속도 면에서 이루어지지 않았던 효율이 좋은 고해상도 영상의 처리 및 전송 알고리듬의 개발이 활발해질 것이다. 픽셀간의 간격을 다양화하여 처리할 수 있고 화질이 떨어지지 않으면서도 속도를 증가시킬 수 있는 수준으로 처리기를 향상시키는 것과 Full Search ME를 위한 병렬처리기를 실제의 Chip으로 구현하여 MPEG 보드와 응용시켜 사용하는 것, PE 수를 다양화 시켜 Chip의 크기와 속도 면에서 적당한 수준으로 연구하는 일이 향후의 과제로 남아 있다.

선분 추출과 원형 정합을 이용한 여러 인쇄 활자체의 영문자와 숫자의 인식

백순흠(Baek Soon Heum),박종원(Park Jong Won) 한국정보과학회 1992 정보과학회논문지 Vol.19 No.2

본 논문에서는 인쇄체 영문자, 숫자와 여러 가지 활자를 인식하는 새로운 PLSETM(Park's Line Segment Extraction and Template Matching) 알고리즘을 제안한다. 이 PLSETM 알고리즘은 글자의 특성을 얻기 위하여 글자에 대한 방향정보와 길이정보를 이용하여 선분(line segment)을 추출한 후 원형 정합 방법으로 문자를 인식하는 새로운 알고리즘이다. 이 PLSETM 알고리즘은 글자에 대한 방향정보를 이용하므로 인쇄체 영문자, 숫자를 인식하는데 있어서 잡음에 강한 특성을 추출하고 다른 논문에서 사용되었던 잡음 제거나 세선화와 같은 전처리 단계를 거치지 않으며, 전에 인식하지 못했던 글자(“i”, “j”)와 활자체를 인식할 수 있다. In this paper, we describe the PLSETM(Park's Line Segment Extraction and Template Matching) algorithm which recognize printed multi-font alphanumeric characters. The PLSETM algorithm is a new method which extracts the line segment with the directional and the length information to obtain features of the characters, and then recognizes the characters by the template matching. By using the directional information of the characters, we not only can extract the features not affected by noise, but can recognize printed multi-font alphanumeric characters. Therefore, the PLSETM algorithm has no use for preprocess that removes noise, and it can recognize the seperated characters(“i”, “j”) and the font types, which were impossible in the previous work.

네가지 방향정보를 이용한 인쇄체 영문자와 숫자의 인식에 관한 연구

백순흠,박종원 충남대학교 1990 忠南科學硏究誌 Vol.17 No.1

In this paper, we describe the PLSE(Park's Line Segment Extraction) algorithm which recognizes printed multi-font alphanumeric characters. This algorithm is the new method which uses four-directional and length information to obtain features of the characters. By using the four-directional information of the characters, the recognition rate and the speed are increased and the separated characters("i","j") and the font types are recognized, which was impossible in the past.

Paracyclopina nana Smirnov (Copepoda)의 생물학적 고찰 : Ⅰ. 각 유생 발생 단계별 탈피율 및 탈피에 소요되는 시간 Ⅰ. Moulting rate and inter-moult interval(days) of each larval developmental stages

김형신,정민민,박흠기,윤양호,이화자 濟州大學校 基礎科學硏究所 2002 基礎科學硏究 Vol.15 No.2

우리 나라 동해안에 위치한 화진포에서 채집된 요각류, Paracyclopina nana의 생물학적 특성을 알아보기 위하여 각 유생 단계의 탈피율 및 탈피에 소요되는 시간을 알아보았다. 수온 20℃, 염도농도 17ppt의 조건에서 T. suecica를 먹이로서 충분량 급이 했을 때 P. nana의 어미로부터 갓 부화되어 나온 nauplius 유생은 성체가 되기까지 평균 17일이 소요됨을 알 수 있었다. 특히 제 1 nauplius 유생 단계에서 제 2 nauplius 유생으로 탈피하는 데에 평균 3.3일이 소요되어 가장 많은 시간을 요하는 것으로 나타났다. 점차 탈피하는데 소요되는 기간은 짧아져서 제 5 nauplius 유생 단계에서 제 6 nauplius 유생 단계로 탈피하는데에 가장 짧아서 약 1일이 소요되었고, 제 2 copepodid 유생 단계에서 제 3 copepodid 유생 단계로 탈피하는데 약 2.5일이 소요되었다. 한편, 제 1 nauplius 유생 단계에서 제 2 nauplius 유생 단계로의 탈피율은 66.7% 그리고, 제 6 nauplius 유생단계까지의 탈피율은 50%를 나타내었다. The moulting rate and inter-moult interval(days) of each larval developmental stages of Paracyclopina nana were studied. The copepod, P. nana was collected from lagoon Hwajinpo, South Korea. The experimental conditions were temperature 20℃, salinity l7ppt and fed on micro-algae, Tetraselmis suecica. The species was metamorphosed to the adult stage after possession of 6 nauplius stages and 5 copepodid stages. The moulting rate was 66.7% from 1st nauplius stage to 2nd one and was 50.0% to 6th one. P. nana were needed 17 days for developing from hatching to adult.

경구피임제를 복용한 여성에서 임신중 발생한 간세포암

박흠례(Heum Rea Park),최덕주(Duck Joo Choi),박현철(Hyun Chul Park),박종재(Jong Jae Park),이성광(Sung Kwang Lee),강동훈(Dong Hoon Kang),김주현(Ju Hyun Kim),김득조(Duk Jo Kim),오수용(Soo Yong Oh),강영숙(Young Sook Kang),이정남(Jong Nam 대한소화기학회 1997 대한소화기학회지 Vol.30 No.1

Hepatocellular carcinoma in pregnancy is very rare. Because it is associated with high maternal and fetal rnortality, the risk group of developing hepatocellular carcinoma in pregnant women must be closely monitored. The risk group includes pregnant women who are HBsAg carriers with cirrhosis, long term users of oral contraceptives, and who have a history of multiparity. An elevated a fetoprotein(AFP) level is useful for the diagnosis. The risk group should be closely monitered with a careful physical examination and AFP measurement. Then hepatocellular carcinoma can be detected at an early stage. We have experienced a case of hepatocellular carcinoma in a pregnant woman with an elevated AFP level who was an user of oral contraceptives and had a history of multiparity. It was confirmed by operation and histologic examination. (Korean J Gastroenterol 1997;30:126-130)

Effect of Temperature and Salinity on Production of Resting Egg in Korean Rotifer, Brachionus plicatilis (L and S-type)

Park, Heum-Gi,Hur, Sun-Bum The Korean Society of Fisheries and Aquatic Scienc 1996 韓國養殖學會誌 Vol.9 No.4

Production of resting egg from the Korean rotifer, Brachiunus plicatilis (L and S-type) was investigated at different temperatures (L-type : 20, 24, $28^{\circ}C$, S-type : 28 32, $36^{\circ}C$) and salinities (10, 20,30 ppt). The rotifer was cultured in 25 ml test tube and fed on Nannochloris oculata. With regard to mixis rate, L-type rotifer showed higher rate at lower temperature, and the highest rate was observed at 20 ppt of salinity at each temperature of the experiment. However, for S-type rotifer, the optimum temperature and salinity were $28\~32^{\circ}C$ and 20 ppt, respectively. The highest number of resting egg was 173 eggs/ml in 16 days at $24^{\circ}C$, 10 ppt for L-type rotifer and 410 eggs/ml in 14 days at $28^{\circ}C$, 10 ppt for S-type rotifer. The maximum number of resting egg produced per 10,000 rotifers was 8,122 eggs at $20^{\circ}C$, 20 ppt for L-type rotifer and 8,700 eggs at $28^{\circ}C$, 20 ppt for S-type rotifer. The maximum number of resting egg produced $10^8$ cells of N. oculata was 50.7 eggs for L-type rotifer ($24^{\circ}C$, 20 ppt) and 79.6 eggs for S-type rotifer ($32^{\circ}C$, 10 ppt). The number of resting egg produced per day was $1\~11$ eggs/ml for L-type rotifers and $21\~35$ eggs/ml for S-type rotifer in 9 combination experiments. In this study, S-type rotifer is better than L-type rotifer in resting egg production, and the optimum temperature and salinity for resting egg production were $20^{\circ}C$, 20 ppt for L-type rotifer and $28^{\circ}C$, 20 ppt for S-type rotifer. This result shows the difference of Korean rotifer in the optimum condition for resting egg production from other rotifers reported earlier.

Synthesis and Properties of Novel Flame Retardant Poly(butylene terephthalate)

Park Jong Min,Park Yun Heum The Polymer Society of Korea 2005 Macromolecular Research Vol.13 No.2

The phosphorus comonomer [(6-oxido-6H-dibenz<c,e><1,2>oxaphosphorin-6-yl)methyl]-methyl butane-dioate (DOP-MBDA) was synthesized through the addition reaction of dimethyl itaconate (DMI) with 9,10-dihydro­9-oxa-10-phosphaphenan threne-10-oxide (DOP). A series of novel flame retardant poly(butylene terephthalate)s (PBTs) containing different amounts of phosphorus were prepared using DOP-MBDA as a comonomer. These novel polymers were characterized by $^{1}H-NMR$, IR, and differential scanning calorimetry (DSC). The novel phosphorus­containing poly(butylene terephthalate)s, referred to as FR-PBTs, exhibited interesting thermal and mechanical behavior, as well as superior flame retardancy. These properties are attributed to the effect of incorporating the rigid structure of DOP-MBDA and the pendant phosphorus group into the poly(butylene terephthalate) (PBT) homopolymer. The UL 94-V2 rating could be achieved with this novel flame retardant PBT, which has a phosphorus content as low as $0.5 wt\%$, and the FR-PBTs emitted less fumes and toxic gases than the PBT homopolymer.

Amine and Olefin Complexes of Pt(II) Having a PCP-Pincer Ligand

Park, Soon-Heum Korean Chemical Society 2002 Bulletin of the Korean Chemical Society Vol.23 No.1

$Pt(2,6-(Cy_2PCH_2)_2C_6H_3)(OTf)\;(OTf=CF_3SO_3^-)$ readily reacts with various amines to afford cationic amine complexes $[Pt(2,6-(Cy_2PCH_2)_2C_6H_3)(amine)](OTf)\;(amine=NH_3,\;NHMe_2,\;NHC_4H_8,\;NH_2Ph,\;NH_2(Tol-p))$ in high yields. These complexes have been fully characterized by IR, $^1H-,\;^{19}F{^1H}-,\;and\;^{31}P{^1H}-NMR$ spectroscopy, and elemental analyses. Reaction of $Pt(2,6-(Cy_2PCH_2)_2C_6H_3)(OTf)$ with acrylonitrile quantitatively produced the ${\pi}$-olefinic complex $Pt(2,6-(Cy_2PCH_2)_2C_6H_3)(CH_2=CHCN)](OTf)$ which is only stable in solution in the presence of acrylonitrile. Attempt at isolating this complex in the pure solid state was failed due to partial decomposition into $Pt(2,6-(Cy_2PCH_2)_2C_6H_3)(OTf)$ The equilibrium constants $(K_{eq}=[Pt(PCP)-(NH_2R)^+][CH_2=CHCN]/[Pt(PCP)(CH_2=CHCN)^+][NH_2R]:\;[Pt(2,6-(Cy_2PCH_2)_2C_6H_3)(CH_2=CHCN)]^++NH_2R{\rightleftarrows}[Pt(2,6-(Cy_2PCH_2)_2C_6H_3)(NH_2R)]^++CH_2=CHCN=Ph,\;p-tolyl)$ were calculated to be 0.28 (for R = Ph) and 3.1 (R = p-tolyl) at $21^{\circ}C$. The relative stability of the ${\sigma}$-donor amine versus the ${\pi}$-olefinic acrylonitrile complex has been found largely dependent upon the amine-basicity $(pK_b)$, implicating that acrylonitrile practically competes with amine in the platinum coordination sphere. On the contrary to the formation of the acrylonitrile complex, no reaction of $Pt(2,6-(Cy_2PCH_2)_2C_6H_3)(OTf)$ with other olefins such as ethylene, styrene and methyl acrylate was observed.

Task Model and Task Ontology based on Mobile Users’ Generic Activities for Task-Oriented Tourist Information Service

Heum Park 보안공학연구지원센터 2013 International Journal of Smart Home Vol.7 No.3

Effect of Temperature and Salinity on Production of Resting Egg in Korean Rotifer, Brachionus plicatilis (L and S-type)

Heum Gi Park,Sung Bum Hur 한국수산과학회 양식분과 1996 韓國養殖學會誌 Vol.9 No.4