• Journal of Space Technology and Applications
• /
• v.1 no.3
• /
• pp.375-395
• /
• 2021

Korea plans to send a pathfinder lunar orbiter to the Moon for the first time in August 2022. And according to the 3rd Basic Plan for Space Development Promotion, the plan is to send a lunar lander to the Moon before 2030. The selection of the lunar landing area can be varied depending on the lunar lander's mission, therefore preliminary research on the lunar landing sites is essential for a successful lunar exploration mission design. This paper analyzed the characteristics of major regions among 14 proposed regions using NASA's MoonTrek based on the data on the candidate areas for the major moon landing proposed sites by the NASA workshop in 2018. And we looked into what kind of future moon landing missions are suitable for these areas. We also looked at the importance of lunar Antarctica area through the recent lunar landing areas of Moon landing countries and Artemis plan.

• Journal of the Korean Institute of Landscape Architecture
• /
• v.33 no.5 s.112
• /
• pp.1-14
• /
• 2005

This study describes the recognition and the application of materials corresponding to the formative language of landscape design as the formative process of creating connote forms and meanings in a space. The purpose of this study is to propose the significance of materiality not only for conveying the meaning of landscape but also for providing expanded experience through synesthetic perception. The study consists of two parts: (1) The concept of materiality in landscape architecture is studied in three categories, which are divided in chronological order when the recognition of materials was changed. (2) Based on this exploration of the concept of materiality and the ways of expressing it that have developed from landscape arts to landscape architecture, the significance of materiality as the medium of contemporary landscape design is proposed. Breaking from previous technical and engineering approaches to materials and from a vision-centered recognition of materials, this study focuses on aesthetic and semantic aspects of materiality and is based on multidimensional recognition though synesthesia. Materiality has significance not only as the dynamic medium that carries the meaning of landscape by providing connections with the surrounding environmental context, but also as the engagement medium that expands observers' experiences with the environment through synesthesia. The study of materiality as the medium of landscape design would contribute to expanding the scope of the language of landscape design and to expressing the meaning of landscape through materiality being revealed on the basis of converted recognition of materials.

• Korean Institute of Interior Design Journal
• /
• v.25 no.4
• /
• pp.90-97
• /
• 2016

As the paradigm which emphasizes nurturing creative elites is introduced, more attention has been paid to children playing and their creativity. This change means that the importance of creativity is emphasized in the education of children, and furthermore, playgrounds which focus on creativity and imagination are needed. Therefore, this study examines the spatial characteristics of playgrounds for children and suggested strategies to improve them. There are five spatial characteristics of a creative playground: aesthetics, being eco-friendly, exploration, challenging and variable. Through the five characteristics, playgrounds were analysed based on ten expressive elements and the results are summarized: Creative playgrounds for children should have an attractive design with sculptural elements which stimulate children to be excited through associable shapes and abstract colors. Second, shelter type structures and a flexible flow design are needed so that children can feel free and be encouraged to explore in diverse ways. Third, as playgrounds for children provide spaces for rest in addition to play, organic facilities and eco-friendly materials for the rest space should to be used. Fourth, as childhood is a period when emotional, cognitive and physical development are achieved, organic geographical features and atypical facilities should be provided so that children can acquire extensive skills and join in physical activities. Finally, creative playgrounds for children should have mobile or variable facilities which consider the characteristics of children who want to do diverse activities and play different games. This study analysed playgrounds for children and suggested strategies to improve them. For successful design and use of creative playgrounds, it is suggested that intensive research on them and consultation with experts should be considered.

• Korean Institute of Interior Design Journal
• /
• v.14 no.6 s.53
• /
• pp.75-85
• /
• 2005

The 1990s' characteristics of Ecological architectural design would be choosing the traditional materials of the region's, the creative usage of construction methods, the expressive properties of materiality in spatial forms and so on. The overall organic relationships between human and men-made environments have been sublimated by the expression of poetic qualities of perception in ecological man-made environment. Hannover Expo 2000 did set up an opportunity to exposure the fact that Ecological Architecture will be the major trend in 21st Century's Architecture and its exploration in possible ways will be the most important matter. Japanese Architect Shigeru Ban's Japan Pavilion in this Exposition has shown the meaning of this turning point in Ecological Architectural thinking, which would be recognized as the convincing possibilities for the future architectural practice to the public. Thus this research has the purpose to study the meaning of the constructing action in Shigeru Ban's recent architectural space-making practice with the Paper Tube structural system. The creative foundation of Shigeru Ban's own method to apply paper tube -that is impossible material to pre-estimate- and other materials in the creation of architectural spaces would be searched in this paper. The period to this research will be between 1990s and 2000s, and the subject will be the experimental architecture of Shigeru Ban. The range of this research Is including the process of development in the paper tube architectural structure and joint system. This study would contribute to understand the intrinsic value of Shigeru Ban's Ecological architecture of the paper tube system, in which the relationship between the regional environment and human regaining the ecological abiogenesis.

• Journal of the Korean Institute of Rural Architecture
• /
• v.17 no.1
• /
• pp.83-94
• /
• 2015

The area of domestic urban design and architecture has established its original characteristics as various programs and functions were created in the drastically changing society. Such features have been presented in a certain type of patterns or unique formations, which demand a gradual development of designs in harmony with the functions and roles of the city and thus designers are forced to continue thinking deeply on this matter in their own perspectives. In particular, such demands are outstandingly high in reality in historical cities such as Andong, which this study works on. As the design contest winner is based on the geographical characteristics and locality, Confucianism and seonbi(Korean classical scholar) spirit, which are regarded as a philosophy of value, how the traditional concepts could be reflected in the plan was the focus of the discussion. The conclusions deduced from such a background include the following. First, it is necessary to make an approach on the basis of the concept in traditional architecture at the complex planning level based on the ideology in the implementation plan that requires traditionality for a complex design with contemporary functions. Second, it is important to approach this as an exploration of a solution to globalize Confucian culture in the future based on the cultural characteristics of the region and the environmental characteristics of the surroundings. Third, beginning from a concept that explains the complex to a concept that explains individual buildings, it is necessary to reflect characteristics in which the realization of a traditional space is planned in three dimensions.

• Journal of the Korea Society of Computer and Information
• /
• v.15 no.9
• /
• pp.1-8
• /
• 2010

The key challenge in HW/SW co-design is how to choose the appropriate HW/SW partitioning from the vast array of possible options in the mapping set. In this paper we present a unique and efficient approach for addressing this problem known as Customized Heuristic Algorithm for Reducing Mapping Sets(CHARMS). CHARMS uses sensitivity to individual task computational complexity as well the computed weighted values of system performance influencing metrics to streamline the mapping sets and extract the most optimal cases. Using H.263 encoder, we show that CHARMS sieves out 95.17% of the sub-optimal mapping sets, leaving the designer with 4.83% of the best cases to select from for run-time implementation.

• Proceedings of the Korean Geotechical Society Conference
• /
• 2001.03a
• /
• pp.501-508
• /
• 2001

A graph or topographic map can often convey larger amounts of information in a shorter time than ordinary text-based methods. To visualize information precisely it is necessary to collect all the geological information at design stage, but actually it is almost impossible to bore or explore the entire area to gather the required data. So, tunnel engineers have to rely on the judgement of expert from the limited number of the results of exploration and experiment. In this study, several programs are developed to handle the results of geological investigation with various data processing techniques. The results of the typical case study are also presented. For the electric survey, eleven points are chosen at the valley to measure the resistivity using Schlumberger array. The measured data are interpolated in 3-dimensional space by kriging and the distribution of resistivity are visualized to find weak or fractured zone. The correlation length appears to be around 5 to 20 meter in depth. Regression analyses were performed to find a correlation length. No nugget effect is assumed, and the topographic map, geologic formation, fault zone, joint geometry and the distribution of resistivity are successfully visualized by using the proposed technique.

• Journal of the Korean Society of Manufacturing Technology Engineers
• /
• v.25 no.5
• /
• pp.321-328
• /
• 2016

Cranes are generally used to drop or lift equipment or materials. The present study focuses on equipment used for dropping and lifting the sonar system for undersea exploration. This study deals with a GA-based MATLAB$^{(R)}$ simulation for the design optimization of a new overboarding prototype with a two degree-of-freedom mechanism, including a parallelogram link, which is efficient in sonar system operation and maintenance. First, the strengths and weaknesses of the existing overboarding mechanisms are analyzed. The new mechanism to solve these problems is then suggested. For the proposed mechanism, the GA-based MATLAB$^{(R)}$ simulation technique is applied to the proposed mechanism to optimize the link lengths and the actuator lengths. By doing this, the mechanism cannot interfere in the hull's internal environment. Hence, the work range of motion (ROM) is satisfied, and good torque-angle properties are obtaind. The developed technology will be helpful in calculating the maximized output torque of the actuator for the application in practice using a similar type of the proposed mechanism.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• v.11 no.9
• /
• pp.4438-4460
• /
• 2017

The Kernelized Correlation Filters (KCF) tracker has caused the extensive concern in recent years because of the high efficiency. Numerous improvements have been made successively. However, due to the abrupt motion between the consecutive image frames, these methods cannot track object well. To cope with the problem, we propose an extended KCF tracker based on swarm intelligence method. Unlike existing KCF-based trackers, we firstly introduce a swarm-based sampling method to KCF tracker and design a unified framework to track smooth or abrupt motion simultaneously. Secondly, we propose a global motion estimation method, where the exploration factor is constructed to search the whole state space so as to adapt abrupt motion. Finally, we give an adaptive threshold in light of confidence map, which ensures the accuracy of the motion estimation strategy. Extensive experimental results in both quantitative and qualitative measures demonstrate the effectiveness of our proposed method in tracking abrupt motion.

• Journal of the Korean Society of Propulsion Engineers
• /
• v.17 no.5
• /
• pp.132-139
• /
• 2013

Liquid-propellant rocket engines are widely used all over the world, thanks to their high performances thrust, in particular high thrust-to-weight ratio. The sucess rate of the launching of the liquid propulsion is similar to the solid one even though it has more complex mechanical system. In general, liquid propulsion is seemed as a mature technology, the requirements of a renewed interest for space exploration has led to the development of a family of new engines, with more design margins, simpler to use and to produce associated with a wide variety of thrust and life requirements.