• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 1995년도 추계학술대회 논문집
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• pp.346-349
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• 1995

In this paperwe develop a real-time simulator for direct drive cooperative robot by using OpenGL in a Windows NT based system. This simulator is composed of 2 parts, a display part and an interface part. In the display part the robot is modelled and rendered in 3D space. To do this OpenGL, a kind of graphic library, is used for rendering and animating robots and kinematics gives the information of the current robot configuration. The control and the feedback data are sent and received via the interface part. In real time simulation interfacing part needs fast data transfer rate and good nosic immunity. In experiment we have simulated 2-link direct drive cooperative robots using the trajectory tracking algorithm proposed in reference.

• 한국공간구조학회논문집
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• 제20권1호
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• pp.69-77
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• 2020

In this paper, the mean and fluctuating pressure coefficients derived from the results of wind tunnel tests on closed and open dome roofs were analyzed. The distribution characteristics of the fluctuating pressure according to the opening ratio and the height change were discussed. The analysis results showed that when the roof is open, the overall wind pressure decreases due to the open space, but more fluctuation occurred than the closed dome roof.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2016년도 추계학술발표대회
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• pp.58-61
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• 2016

.PCI Express는 고속, 저전력 등의 특성으로 업계 표준으로서 많이 쓰이고 있는 프로세서와 주변 I/O 장치들을 연결하는 버스 기술이다. 또한, PCI Express는 인피니밴드와 이더넷과 더불어 고성능 컴퓨터나 컴퓨터 클러스터를 위한 시스템 인터커넥트 기술로 널리 쓰이고 있다. PGAS(partitioned global address space) 프로그래밍 모델은 컴퓨터 클러스터와 같은 다중 호스트 시스템에서 단측 RDMA(remote direct memory access)를 구현하는데 많이 이용된다. 본 논문에서는 PCI Express 기반 RDMA를 구현하기 위해 PGAS 프로그래밍 모델인 OpenSHMEM의 기존의 특징을 유지하여 PCI Express 기반 OpenSHMEM API를 설계 및 구현하였다. 구현한 OpenSHMEM API는 PCI Express의 NTB(non-transparent bridge) 기술로 2대의 PC를 연결한 시스템에서 매트릭스 곱셈 예제를 통하여 실험하였다.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2001년도 학술발표대회논문집
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• pp.15-24
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• 2001

Upon entering the 21st Century, One of the new paradigm of Housing industry in Korea is to accomplish the foundation of Sustainable Building & Environment. It is easy to understand that Building environment in Korea is appearing the phenomenon of rapid conversion from supply-oriented market to demand-oriented market. Thus, the purpose of this paper is to suggest the direction of a new housing development with "Open Housing"as New Housing System which takes into account durability of housing based on the changeability among Housing-Components, the flexibility of interior space, the remodeling & repairing of housing and the user′s needs with variable life-style. This paper also shows the example of Infill-Systems for the Open housing in Korea on the basis of housing situation, experiences for the Open Housing including assembly technique of Infill-Systems.

• 한국실내디자인학회논문집
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• 제19권1호
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• pp.200-207
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• 2010

The purpose of this study was to analyze the variables of the state-of-the-art office planning for the productive workplaces of the North America and to predict the adaptability in Korea. Knowledge workers have been considered as the decisive factors for the survival and development of organizations. So, open workplaces have been considered appropriate for the workplace to stimulate their informal knowledge sharing. However, the low individual productivity due to low privacy and distraction in the open workplace has been the key problem. To solve the dilemma, this study suggests that closed individual offices are best for the individual productivity and open conference area and meeting places are essential for the informal knowledge sharing. Some state-of-the-art workplaces such as just-in-time offices and hotelings can provide more space for the individual workplaces and open meeting places without excessive cost burden of organizations.

• 한국의류산업학회지
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• 제15권2호
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• pp.173-181
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• 2013

This research analyzed the expression trend about the slit which composes the open space by the visual concept and then introduced the imbedded aesthetic value in it. Based on it, this work aims at showing the evidence on the slit as a utilizing tool for various design applications and providing the basic materials in order to develop the creative design production in the fashion area in the future. Specifically, for the theoretical background in this research, the concept of slit and its chronological changes were reviewed through literature. For the empirical analysis on the slit, a total of 226 designs with its application were analyzed from collection pieces in the four major collections including Paris, Milan, New York, and London from 2006S/S to 2012S/S. As a result of analysis, types of slit appeared as a slash, opening, slit, or a mix of them. These were applied to many different items of clothing, and among which, one-piece or dress was adopted most for application. In regard to space form, perpendicularity was used most frequently. But other various forms like cross and geometrical pattern were also used as well as curve, oblique line and horizontality. As to the arrangement of slit, single type was most frequently used. However, in addition to it, other types were also applied, producing both the functionality and the decorative detail such as bilateral symmetry, free irregularity, and a combination of regular and repeated layout which makes an effect of single pattern. Aesthetic values imbedded in slit were revealed as functionality, sensuality, spatiality, and decorativeness.

• 한국주거학회논문집
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• 제8권1호
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• pp.87-96
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• 1997

The user's needs for the American kitchen space were studied. Especially the remodelings and the desirable changes of the rural kitchen space were examined. Pilot study was carried out by the field survey. Questionnaire with 16 open-end items had been collested bt mail in Missouris, U.S. Based on the qualitative analysis of data for 104 houses. main characteristics of users' needs for the kitchen space can be summerized as follows : 1) The residents had changed or updated materials and facilities, and had enlarged storage space to equip more cabinets. Kitchen space had been adapted to new facilities and appliances. 2) The users still wanted to have larger kitchen space, more storage space and newer floor materials. Through this study it can be concluded that users needed kitchen space to be convenient and wide enough to work.

• 천문학회지
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• 제39권4호
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• pp.115-123
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• 2006

We present $JHK_S$ near-infrared CCD photometric study for the Galactic open clusters NGC 1641 and NGC 2394. These clusters have never been studied before, and we provide, for the first time the cluster parameters; reddening, distance, metallicity and age. NGC 1641 is an old open cluster with age $1.6{\pm}0.2$ Gyr, metallicity $[Fe/H]=0.0{\pm}0.2$ dex, distance modulus$(m-M)_0=10.4{\pm}0.3\;mag(d=1.2{\pm}02\;kpc)$, and reddening $E(B-V)=0.10{\pm}0.05$ mag. The parameters for the other old open cluster NGC 2394 are estimated to be $age=1.1{\pm}0.2$ Gyr, $[Fe/H]=0.0{\pm}0.2$ dex, $(m-M)_0=9.1{\pm}0.4\;mag(d=660{\pm}120\;pc)$, and $E(B-V)=0.05{\pm}0.10$ mag. The metallicities and distance values for these two old open clusters are consistent with the relation between the metallicities and the Galactocentric distances of other old open clusters. We find the metallicity gradient of 53 old open clusters including NGC 1641 and NGC 2394 to be ${\Delta}[Fe/H]/{\Delta}R_{gc}=-0.067{\pm}0.009\;dex\;kpc^{-1}$.

• Journal of Astronomy and Space Sciences
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• 제13권1호
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• pp.32-39
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• 1996

Voyager IRIS (Infrared Interferometer Spectrometer) observations of Jupiter's Great Red Spot (GRS) have been examined in order to extract the vertical distribution of phosphine. To the accuracy than can be achieved from this approach, there appears to be no difference between the PH3 distribution over the GRS compared with the distribution over the neighboring South Tropical Zone. This result is at variance with a pre-Voyager prediction of an enhancement of PH3 over the GRS resulting in the preferential production of red phosphorous in this location on the planet (Prinn & Lewis 1975). The composition of the red material remains an open question.

• 대한수학회보
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• 제36권4호
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• pp.701-706
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• 1999

A characterization of geodesic spheres in the simply connected space forms in terms of the ratio of the Gauss-Kronecker curvature and the (usual) mean curvature is given: An immersion of n dimensional compact oriented manifold without boundary into the n + 1 dimensional Euclidean space, hyperbolic space or open half sphere is a totally umbilicimmersion if the mean curvature $H_1$ does not vanish and the ratio $H_n$/$H_1$ of the Gauss-Kronecker curvature $H_n$ and $H_1$ is constant.