• 천문학회지
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• 제15권1호
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• pp.41-48
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• 1982

PDS was used to get the structure of two barred spiral galaxies NGC 1313 and NGC 1365. The result shows that NGC 1365 has both a deep spheroidal component and an exponential disk, but NGC 1313 has only an prominent exponential component. The luminosity profiles indicate that KGC 1313 is in type I and NGC 1365 belongs to type II. The length scales $({\alpha}^{-1})$ were derived from the exponential luminosity distributions as 1.64 kpc for NGC 1313 and 2.49kpc for KGC 1365.

• 한국분말야금학회:학술대회논문집
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• 한국분말야금학회 2005년도 춘계학술강연 및 발표대회강연 및 발표논문 초록집
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• pp.64-65
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• 2005

• Journal of Astronomy and Space Sciences
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• 제9권1호
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• pp.1-10
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• 1992

Isophote map and luminosity profile of the barred spiral galaxy NGC 7755 are obtained from PDS scanning of PAL 0-471 plate. From the isophote map, NGC 7755 can be classified SBbc(r) with asymmetric bar ring. We get several physical parameters $({M_T}^\circ,U(R)_{CB},U(R)_{CD},D/B,C_{jj},M/L)$ of NGC 7755 from the analysis of the luminosity distribution.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2007년도 제38회 하계학술대회
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• pp.400-401
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• 2007

3D Modeling S/W인 PDS(Plant Design System)의 Electrical Raceway Modeling Software인 EE-Raceway로 작성된 DB에서 트레이, 트레이 Link, Fitting 데이터를 추출하여 케이블 엔지니어링 프로그램의 Input 자료로 활용하는 연계기술과 활용에 대하여 소개하고자 한다

• JSTS:Journal of Semiconductor Technology and Science
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• 제1권1호
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• pp.84-93
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• 2001

An electromagnetic micro x-y stage for probe-based data storage (PDS) has been fabricated. The x-y stage consists of a silicon body inside which planar copper coils are embedded, a glass substrate bonded to the silicon body, and eight permanent magnets. The dimensions of flexures and copper coils were determined to yield $100{\;}\mu\textrm{m}$ in x and y directions under 50 mA of supplied current and to have 440 Hz of natural frequency. For the application to PDS devices, electromagnetic stage should have flat top surface for the prevention of its interference with multi-probe array, and have coils with low resistance for low power consumption. In order to satisfy these design criteria, conducting planar copper coils have been electroplated within silicon trenches which have high aspect ratio ($5{\;}\mu\textrm{m}$in width and $30{\;}\mu\textrm{m}$in depth). Silicon flexures with a height of $250{\;}\mu\textrm{m}$ were fabricated by using inductively coupled plasma reactive ion etching (ICP-RIE). The characteristics of a fabricated electromagnetic stage were measured by using laser doppler vibrometer (LDV) and dynamic signal analyzer (DSA). The DC gain was $0.16{\;}\mu\textrm{m}/mA$ and the maximum displacement was $42{\;}\mu\textrm{m}$ at a current of 180 mA. The measured natural frequency of the lowest mode was 325 Hz. Compared with the designed values, the lower natural frequency and DC gain of the fabricated device are due to the reverse-tapered ICP-RIE process and the incomplete assembly of the upper-sided permanent magnets for LDV measurements.

• 대한한방내과학회지
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• 제36권3호
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• pp.308-322
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• 2015

Objectives: Whether there exists a distinct pathogenesis in subgroups of functional dyspepsia (FD), the classification of epigastric pain syndrome (EPS), and postprandial distress syndrome (PDS) remains controversial. We aimed to investigate the number of fungiform papillae (FP) in the subgroups of FD and its correlation with the severity of dyspepsia symptoms and spleen qi deficiency. Methods: Patients with FD were enrolled from August to November 2014. All patients were evaluated using a questionnaire and divided into 2 groups according to the Rome III criteria for FD. The severity of dyspepsia symptoms and spleen qi deficiency were separately assessed by Nepean Dyspepsia Index-Korean (NDI-K) version and Spleen qi deficiency questionnaire (SQDQ). The number of FP was measured on the anterior part of tongue, within an area of 9 mm ², using a digital cam Results: The NDI-K score, SQDQ score, and number of FP in the EPS group were significantly greater than those in the PDS group. Also, the EPS group had more patients diagnosed with spleen qi deficiency. The number of FP showed a significant positive correlation with epigastric pain and burning. Furthermore, the number of FP was significantly associated with the score of some items in NDI-K and SQDQ, even though not with the total score. Conclusions: Thus, measurement of the number of FP could be a new evaluation indicator for allocation into FD subtypes and to investigate the severity of dyspepsia symptoms and spleen Qi deficiency reflecting visceral hypersensitivity.

• 한국환경과학회지
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• 제16권2호
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• pp.187-195
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• 2007

Long-term passive diffusive samplers(PDS) have been used to measure $NO_2\;and\;SO_2$ concentrations at 21 sampling sites in Daejeon, Korea during the period of January 2000 - December 2002. The spatial distributions of annual $NO_2\;and\;SO_2$ concentrations were mapped. Average annual $NO_2$ concentration over the sampling period was $28.5{\pm}12.5\;ppb$, ranging from 1.2 to 81.7 ppb. Average annual $SO_2$ concentration over the sampling period was $7.7{\pm}4.8\;ppb$, ranging from 0.6 to 26.8 ppb. On average, $NO_2$ concentration was approximately 5.8%(1.6 ppb) larger in 2002. $SO_2$ concentration was decreased by 13%(1.1 ppb) during the sampling period. The seasonal variation of $NO_2\;and\;SO_2$ concentration was observed with a tendency to be higher in fall and winter. $NO_2\;and\;SO_2$, concentrations measured at different site types(patterns of land use) show significant difference. The observed difference in concentration was associated with difference in emissions of $NO_2$ from motor vehicles and $SO_2$ by non-traffic fuel consumption for heating.

• 천문학회지
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• 제25권1호
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• pp.23-46
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• 1992

The electrical, mechanical and optical capabilities have been tested of the microdensitometer PDS 1010GMS at the Korea Astronomy Observatory. The highest stage of scan speed 255 csu (conventional speed unit) is measured to be 47 mm/s. At this speed the position is displaced by $4{\mu}m$ to the direction of scanning and the density is underestimated by $0.4{\sim}0.7D$. Standard deviation in the measured density is proportional to $A^{-0.46}$, where A is the area of scan aperture. The accuracy of position repeatability is ${\pm}1{\mu}m$, and that of density repeatability is ${\pm}(0.003{\sim}0.03)D$. Callier coefficient is determined to be 1.37; the semispecular density is directly proportional to the diffuse density up to 3.5D. Because the logarithmic amplifier has a finite response time, the densities measured at high scan speeds are underestimated to the degree that speeds higher than 200 csu are inadequate for making an accurate astronomical photometry. After power is on, an about 5 hour period of warming is required to stabilize the system electrically and mechanically as well. On the basis of this performance test, we have determined the followings as the optimum scan parameters for the astronomical photometry: For the scan aperture $10\;\sim\;20{\mu}m$ is optimal, and for the scan speed. $20\;{\sim}\;50$ csu is appropriate. These parameter values are chosen in such a way that they may keep the density repeatability within ${\pm}0.01D$, the position displacement under $1{\mu}m$, and the density underestimation below 0.1D even in high density regions.

• 한국멀티미디어학회논문지
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• 제11권11호
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• pp.1592-1600
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• 2008

본 연구는 '캐릭터 구성 이미지 요소들의 재구성'이라는 논제를 바탕으로 하여 창의적 아이디어 발상을 돕기 위한 연구로 형태 이미지 요소들의 조합을 컴퓨팅 형태 생성에 의한 독창적이고 다양한 이미지 생성을 목적으로 하였다. 기존의 아이디어 발상법에서 벗어나 창의적 형태발상능력을 극대화시키고 사고의 한계를 극복하기 위한 디자인 발상법을 제시하기 위하여 창의적 아이디어 발상법에 대한 선행연구 중 비례를 이용한 기존 시스템인 PDS(Proportion Distort System) 아이디어 발상법의 문제점을 파악하여 보완한 창의적 아이디어 발상법인 CGS(Character Generation System)를 제시하였다. 본 연구는 영상 3D 캐릭터 디자인 개발프로세스 중 아이디어발상 또는 창조적인 이미지발상지원에 대한 한 방법으로 그 효과가 있을 것이며, 다양한 아이디어를 만들어 낼 수 있어 형태발상의 한계점을 극복할 수 있는 보조역할을 할 수 있을 것이라 기대된다.

• 한국멀티미디어학회논문지
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• 제13권7호
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• pp.1095-1104
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• 2010

본 연구는 기존의 아이디어 발상법에서 벗어나 창의적 형태발상능력을 극대화시키고 사고의 한계를 극복하기 위한 창의적 아이디어 발상법의 하나로써 선행연구 중 비례를 이용한 기존 시스템인 PDS(Proportion Distort System)아이디어 발상법의 문제점을 파악하고 보완하여 개발한 CGS System의 Digital Process System 부분에 관한 연구이다.[1] 또한 본 논문은 한국멀티미디어학회 2008년 11월 멀티미디어학회 논문지 제11권 11호에 게제된 "3차원 캐릭터 모델기반 CGS System 구축 (Part1 : Non-Digital Process에 관하여),"에 관한 연장된 연구로써 실질적 System의 구현방법, 연구방향 및 결과를 제시하여 캐릭터 디자이너가 캐릭터 제작 시 즉각적인 아이디어 발상 Feed-Back을 얻을 수 있으며 작업과정의 시간과 비용을 절감할 수 있는 효과를 가져 올 것으로 사료된다.