• The Bulletin of The Korean Astronomical Society
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• v.46 no.2
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• pp.59.2-59.2
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• 2021

On March 6 2021, Apophis made a close approach to the Earth with a minimum distance of 0.11 AU when the apparent magnitude reached up to V~16. This was the most favorable condition to observe this asteroid until its 2029 encounter. The observations during this apparition were extremely important to determine major physical properties, such as size, rotational state, 3D shape model, surface mineral properties. So, we organized the observation campaign during the 2021 apparition. The main goals of our campaign are to refine the spin state and 3D shape model and check the surface composition variations. The campaign involved dozens of countries and included ground-based photometry and spectroscopy, and spacecraft observations. Our timely observation campaign will provide essential data in planning the operation scenario for the space mission. In this presentation, we will report the preliminary result of the Apophis observation campaign during the 2021 apparition.

• Journal of The Korea Institute of Healthcare Architecture
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• v.7 no.2
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• pp.59-69
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• 2001

The purpose of this study is to provide a basic data for architectural planning on the wards and special quality of physical remedy spaces of geriatrics hospital. This research, to analyse dependency degree of inpatients in geriatric hospital, shows relativeness between remedy space and wards, and to show behavior of each patients reaction to there space. Result of interviewed inpatients who were sorted by age, sex, dependency degree, and days in hospital, suitable space programming is to need for physical and mental state. On the bases of survey and analysis, the basic data for planning and design the hospital for the elderly with dementia has been proposed.

• Journal of the Korean housing association
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• v.17 no.2
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• pp.27-39
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• 2006

The purpose of this study was to present a guideline for the construction of children park that can create a quality of dwelling and be easily approached and utilized by residents. In order to present a direction of planning, the investigator examined the actual state of children park in low-rise house residential area, and analyzed its general characteristics. And the discriminative characteristics according to the standpoints of planning of children park. The analytic standpoints were classified into the size and disposition of park, the nature of adjacent street and the utilization of park, and the satisfaction and requirement for the internal space of park. The guideline of planning of children park are as follow: (1) The disposition and size of children park: the children park must be disposed convenient use of all the residents. (2) The environment around including approaching streets and facilities around: residents' recognition and access in their everyday life must be considered in relation to the neighborhood streets and surrounding facilities. (3) The composition and utilization of internal space: the internal space must support all the activities of users, and reflect users' requirements in order to induce them to use it continuously.

• Journal of the Korean housing association
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• v.21 no.2
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• pp.11-18
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• 2010

The purpose of this study is to analyze the exterior space designs of housing complexes where landscape view corridors were planned. In addition, the purpose of the study is to propose reference data for planning and designing a new landscape view corridor. The process of this study is as follows: (1) To understand the role of the landscape view corridor, this study investigated cases of district unit plans and classified the landscape view corridors in terms of the types of functions. (2) To extract analysis items on the exterior space design of housing complexes where landscape view corridors were planned, this study investigated guidelines to be set up for the design of landscape view corridors and the present state of the condition of landscape view corridors. (3) This study analyzed the relationship between the landscape view corridor and the courtyard, the roadway and convenience facilities of the housing complex. This study also proposed reference data for planning a new landscape view corridor and designing the exterior space of a new housing complex.

• Korean Institute of Interior Design Journal
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• v.19 no.1
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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.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.16 no.8
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• pp.2473-2489
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• 2022

Urban development has brought about the increasing saturation of urban traffic demand, and traffic congestion has become the primary problem in transportation. Roads are in a state of waiting in line or even congestion, which seriously affects people's enthusiasm and efficiency of travel. This paper mainly studies the discrete domain path planning method based on the flow data. Taking the traffic flow data based on the highway network structure as the research object, this paper uses the deep learning theory technology to complete the path weight determination process, optimizes the path planning algorithm, realizes the vehicle path planning application for the expressway, and carries on the deployment operation in the highway company. The path topology is constructed to transform the actual road information into abstract space that the machine can understand. An appropriate data structure is used for storage, and a path topology based on the modeling background of expressway is constructed to realize the mutual mapping between the two. Experiments show that the proposed method can further reduce the interpolation error, and the interpolation error in the case of random missing is smaller than that in the other two missing modes. In order to improve the real-time performance of vehicle path planning, the association features are selected, the path weights are calculated comprehensively, and the traditional path planning algorithm structure is optimized. It is of great significance for the sustainable development of cities.

• Proceeding of Spring/Autumn Annual Conference of KHA
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• 2003.11a
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• pp.115-119
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• 2003

The green space become more important in the city. It is shown as the urban neighborhood park. But the current problem of urban neighborhood parks planning in Ulsan is uniform without reflecting area's characteristic. The Purpose of this study is to propose the planning methods of urban neighborhood parks by surveying characteristic of each urban neighborhood parks in Ulsan actual states and use behaviors.

• The Journal of Sustainable Design and Educational Environment Research
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• v.17 no.1
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• pp.12-22
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• 2018

The purpose of this study is to suggest a space planning direction that can more effectively support creativity and character education in elementary school. In order to do this, we investigated the current state of space creation and the space utilization of schools that operate creativity and Character Education programs. In addition, we surveyed and analyzed the user satisfaction and demand for school space in terms of creativity and character education. The results of this study are as follows: First, 23 design criteria were drawn for each main space in which creative and character education programs are conducted. Second, we investigated the priority and satisfaction of the space that is frequently used in the school for creativity and personality education. Third, we surveyed the types and priorities of new spaces needed to cultivate students' creativity and character. Fourth, 14 concrete space planning directions for creating creativity and character education were suggested.

• The Journal of Korea Robotics Society
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• v.14 no.2
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• pp.104-113
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• 2019

Object manipulation in cluttered environments remains an open hard problem. In cluttered environments, grasping objects often fails for various reasons. This paper proposes a novel task and motion planning scheme to grasp objects obstructed by other objects in cluttered environments. Task and motion planning (TAMP) aims to generate a sequence of task-level actions where its feasibility is verified in the motion space. The proposed scheme contains an open-loop consisting of three distinct phases: 1) Generation of a task-level skeleton plan with pose references, 2) Instantiation of pose references by motion-level search, and 3) Re-planning task based on the updated state description. By conducting experiments with simulated robots, we show the high efficiency of our scheme.

• The Journal of the Korea Contents Association
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• v.19 no.6
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• pp.236-248
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• 2019

Green belts can help to set boundary for city growth, provide ecological protection system and enhance the resilience of Beijing. During the implementation period of the current overall city planning of Beijing, the proportion of green space varies much among the sub-districts, villages and towns involved in the two green belts in the research. With this as starting point, by researching the correlations of 'city system factors' and 'planning policy factors' with the change in the scale of green space, the paper discussed the influential factors of implementing the planning of green space of Beijing, and conducted quantitative research, with such possible influential factors classified into 'city system factors' and 'planning policy factors'. Through multiple linear regression model, the paper tested the correlations of city system factors and planning policy factors (independent variable) with the increment in the construction land in green belts (dependent variable). Through influence to population aggregation and the expansion force of construction land, city system factors such as mountain land and water, house rent of unit area, accessibility of public transport and the newly-defined state-owned construction land generate correlation with the change in the scale of construction land in green belts.