• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2000년도 하계종합학술대회 논문집(3)
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• pp.63-66
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• 2000

WBI provides new opportunities to realize the flexible learning environment based on hypermedia and to support distance learning with a diverse interaction. The instructors or learners in WBI claim to be able to resolve reluctant fluctuations such as disorientation and cognitive overload. To overcome these phenomena, a supplementary tool able to manage learning space organized by the instructor's or learner's own way and offer effective navigation techniques is presented in this paper. A learning space management and navigation tool called HyperMap dynamically represents the learning space in the form of a two-dimensional labeled graph. This HyperMap also can be used for an instruction design tool, learner's portfolio for the exchange of learning experiences. and the assessment of WBI.

• 천문학회지
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• 제44권1호
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• pp.33-38
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• 2011

We study near-infrared properties of the old open cluster King 11, based on the 2MASS photometric data. We determine the location of the red giant clump(RGC) in the (K, J - K) colo-magnitude diagram and derive the distance modulus of King 11 to be $(m-M)_0$ = $12.50{\pm}0.10$ using the mean K magnitude of RGC. From the red giant branch slope - [Fe/H] relation we obtain the metallicity of this cluster, [Fe/H]=$-0.17{\pm}0.07$. The age and interstellar reddening of this cluster are estimated to be log t = $9.48{\pm}0.05$, E(B-V)=$0.90{\pm}0.03$, by applying Padova isochrone fits to the data.

• Journal of Astronomy and Space Sciences
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• 제28권1호
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• pp.13-16
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• 2011

The $CH_3OH$ $4_2-5_1$ E transition was observed toward the Sgr B2 region, including the Principal Cloud and its surroundings. This methanol transition shows an extended emission along the 2'N cloud, which is believed to be colliding with the Principal Cloud and may trigger the massive star formation in this cloud. This extended methanol emission may also suggest that the 2'N cloud is under shocks. We derive total methanol column density $N(CH_3OH)\;=\;2.9{\pm}0.3{\times}10^{14}\;cm^{-2}$ toward the peak position of the extended emission. The fractional abundance of methanol is about 10.9, relative to the estimated total $H_2$ abundance, which is similar to the methanol abundances in quiet gas phase.

• 건축역사연구
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• 제1권2호
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• pp.39-51
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• 1992

Eating was done on a respective one-man dining table, which reflect the esteem for the individual. The family eating place was generally An-bang of the house, The eating space of Yang-ban housing with its hierarchical, spatial method of tabling and eating around the head of the family served as a synchronically meaningful space which was to strengthen the solidarity of patriarchy beyond the mere funtioning place of eating. That meaning seems to reveal itself more conspicuously when we consider that the eating place is An-bang, the center of the main house. The basic space for cooking was Bu-oak (Chung-ji). Thre was no water-supply system or drainage in the kitchen, so all the water needed for cooking was drawn from outdoor well with a bucket. The traditional eating habits, the entertainment for the bustling guests, and the frequent sacrificial rites required many store rooms for the subasidiary food and wide space for putting food into order.

• Journal of Astronomy and Space Sciences
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• 제19권3호
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• pp.173-180
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• 2002

Images taken with the Chandra X-ray telescope have for the the first time revealed the central, wind-driven, hot bubble (Chu et al. 2001), while Hubble Space Telescope (HST) WFPC2 images of the Cat's Eye nebula, NGC 6543, show that the temperature of the halo region of angular radius ~ 20", is much higher than that of the inner bright H II region. With the coupling of a photoionization calculation to a hydrodynamic simulation, we predict the observed 〔O III〕 line intensities of the halo region with the same O abundance as in the core H II region: oxygen abundance gradient does not appear to exist in the NGC 6543 inner halo. An interaction between a (leaky) fast stellar wind and halo gas may cause the higher excitation temperatures in the halo region and the inner hot bubble region observed with the Chandra X-ray telescope.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2008년도 춘계학술발표대회 논문집
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• pp.311-314
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• 2008

Assuming that while the Confucian idea-based awareness of boundary appeared to have a distinct effect on traditional residential spaces the awareness of an individualized nuclear family-oriented boundary deviated from authoritarianism has been recently shown in the modern residential spaces, this study was conducted to clarify what the modern people's awareness of boundary influences individual residential spaces and how the boundary is structured. This study was carried out by examining prior studies on the concepts of boundary and analysing the planes of residential apartments as a typical modern residential space, based on the comparison of traditional and modern residential spaces. It was shown, then, that the awareness of boundary in the modern residential space appeared to be structured in the residential apartment space according to the change in the social position and role of family members, unlike the spatial division of the traditional residential spaces based on the social class and sex.

• 제어로봇시스템학회논문지
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• 제12권5호
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• pp.497-504
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• 2006

This paper presents a new technique that derives the dynamic acceleration bounds of multiple cooperating robot systems from given individual torque limits of robots. A set of linear algebraic homogeneous equation is derived from the dynamic equations of multiple robots with friction contacts. The mobility of the robot system is analyzed by the decomposition of the null space of the linear algebraic equation. The acceleration bounds of multiple robot systems are obtained from the joint torque constraints of robots by the medium of the decomposed null space. As the joint constraints of the robots are given in the infinite norm sense, the resultant acceleration bounds of the systems are described as polytopes. Several case studies are presented to validate the proposed method in this paper.

• 교육녹색환경연구
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• 제3권1호
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• pp.15-23
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• 2003

Focusing on both the form of open classroom and that of independent one which have been most planned and being built, this study was designed to see if the educational environment of their inner space, structure, and facilities gives a proper support to classroom activities during the various classes based on open education. Selecting representative teaching methods in elementary school, such as open simultaneous learning, learning through a medium, learning in the corner, subject learning, team teaching and learning hardening basics, this study surveyed problems and improvements using literature works, questionnaires, observing, and interviews. Through the study on learning space for open education, it has been known that the form of independent classroom fits into one classroom learning and open classroom into small group learning and individual learning, and that the form of open classroom connecting open space with a classroom are more desirable when there is change from large to small group.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2002년도 추계학술발표대회
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• pp.197-201
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• 2002

The purpose of this study is to provide the information of street planning for revitalization oft the community in urban detached housing area. This study was accomplished by observations and actual survey, and suggested several street planning methods; exclusion of the passing through car and control of the resident's car by one-way passage, protection of the parking area to inside individual lot by the ‘Break down Fence’ campaign in Daegu, and provide the common space for social contact and community According to this program, the public street space cant be changed into the semi-private space and the semi-public space as common territory.

• 한국실내디자인학회논문집
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• 제21권5호
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• pp.381-389
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• 2012

This study starts from the question about the possibility of landscape, especially the possibility to give a new vision in the aspect of publicity. Such a concept of landscape architecture made its appearance in the last decade of the 20th century, as the flexible network to include the changes and the specificity of the surroundings, which simultaneously focuses on the temporality-the uncertainty. Moreover landscape architecture can be defined as the architecture in which the interest on human activities lie in the center of the concept. By analyzing concrete examples, the landscape architecture can be defined in 3 aspects : unity of building and nature, void and public space, space of expansion. As a result of the analysis of landscape architects' statements, it can be said that the issues of publicity are always put at the starting point of landscape architecture with its attention to the way to associate an individual with the others.