• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 1997.10a
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• pp.11-19
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• 1997

이 글의 내용은 다음과 같다 1.서론 2.Rotor Dynamics에서의 Quotes & Misquotes/역사 바로 세우기 3.Rotor Dynamics는 이대로 좋은가\ulcorner 3.1.Rotor Dynamics와 Balancing 3.2.Balancing은 ultra-precision process 3.3.Unbalance response의 현황과 문제점 3.4.Jeffcott Rotor[Jeffcott 1919] 3.5.National Rotor Dynamics Test Facility의 필요성 4.결론

• Journal of architectural history
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• v.24 no.6
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• pp.21-33
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• 2015

This study aims to rediscover the meaning and value of Soswaewon construction represented in Kim In-Hu's 48 poems on the basis of the concept and idea of soundscape. It classified the landscape resources through the various emotional elements such as the sense of sight, hearing, smell, touch, taste, and warmth described in the 48 poems of Soswaewon, and also interpreted the meaning and value of Soswaewon construction. Appreciating various sounds of Soswaewon, Kim In-Hu understood a sound as an important element of the landscape. Also, he abundantly wrote down the interesting changes of Soswaewon which vary depending on time or seasons. The 48 poems contain the scent and feel of Soswaewon as well as the soundscapes which can be heard with ears. A variety of sounds heard in Soswaewon are the whole senses which are combined with the chill of Soswaewon, the fragrance of trees and the mystery of the mountain, etc, and they mean the wider world much more than the value of physical sounds. Soundscapes of Soswaewon are becoming an emotional space which intactly conveys not only the musical inspiration but also the scent of life to us.

• Journal of architectural history
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• v.26 no.6
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• pp.29-40
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• 2017

Soswaewon as a typical villa garden of Korea is a symbolic garden that its diverse compositions imply a specific meaning. This study reviewed the purpose of introduction, meaning, and location of the landscape plants as one of the compositions and covering quite a large part of Soswaewon through 48 Yeong (meaning 48 poems of Soswaewon) and Soswaewondo (meaning Map of Soswaewon). In 48 Yeong, 27 verses describe landscape plants as their key poetic matters. The most frequently mentioned top 3 plants are bamboos, pine trees, and Japanese apricots. The three plants are called Sehansamwoo(歲寒三友) showing constant fidelity and loyalty in any changing situations, which was regarded to represent the nature of scholars. And also the study examined the frequency and planting location of the plants in Soswaewon by comparing 48 Yeong and Soswaewondo, and the result showed some differences between them. That seems to be caused by the limitations in the comparison, because in case of 48 Yeong, the location and frequency of landscape plants can be examined only through the context of the verses, and Soswaewondo showed different production time from 48 Yeong and expressed them only in a form of drawing. The plants have symbolic meanings multi-layered and ambiguous. With their symbolic meanings, the landscape plants reviewed through 48 Yeong consistently represent fidelity and loyalty, man of virtue, and hermit. That is, Soswaewon is the garden granting some significance to its compositions by interacting with the things.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.18 no.5
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• pp.100-111
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• 2019

The existing selected station analysis (SSA) method analyzes the link transfer mode data between origin and destination of individuals passing through stations from a microscopic standpoint. As such, existing SSA is insufficient as it uses integrated analysis using macroscopic data such as subway lines. This research builds a line chain OD based on path search of individual passenger's movement through the subway, and explores means to utilize the findings. First, a method is proposed that searches the traversed subway path from the linked passage modes that the passenger uses and applies the results to SSA line analysis. Compared to the existing SSA, this method provides for analysis of commonly conflicting features such as the line on which the station is passed, and the stations included on the line thanks to the presence of complete information of the individual passenger's traversed path. It also allows for integrated observation of the line chain OD that approaches a certain station. For enhanced understanding, Seoul Metro Line 9 is used as a case study to demonstrate the integrated formulation concept of line chain OD centered around a certain station as well as the macroscopic features of the traversed path that approaches stations included on the line.

• School Mathematics
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• v.16 no.4
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• pp.727-743
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• 2014

The concepts of sample and sampling are central to the statistical thinking and foundations of the statistical literacy, so we need to be emphasized their importance in the statistics education. However, many researches which dealt with samples only analyze textbooks or students' responses. In this study, the concept of sample is addressed by a historical consideration which is one aspect of the didactical analysis. Moreover, developing concept of sample is analyzed from the preceding studies about the statistical literacy, considering the sample representativeness and the sampling variability. The results say that the historical process of developing the concept of sample can be divided into three step: understanding the sample representativeness; appearing the sample variance; recognizing the sampling variability. Above all, it is important to aware and control the sampling variability, but many related researches might not consider sample variability. Therefore, it implies that the awareness and control of sampling variability are needed to reflect to the teaching-learing of sample for developing the students' statistical literacy.

• Journal of architectural history
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• v.7 no.3 s.16
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• pp.27-51
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• 1998

One of the characteristics of a good construction is efficiently to use material and manpower related in the construction. From the preplanning stage to the completion one, a program planner must sufficiently consider the whole field of construction in terms of cost. The estimating account books were written and left in the Construction of the Kyongwoon Palace reconstructed in the beginning of 20th century. Trough those books and other related documents, this paper has been concentrated on the estimated, executed cost of woodwork in those days.

• Journal of architectural history
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• v.11 no.3 s.31
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• pp.53-68
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• 2002

Since the 17th century, the finance for the government construction was demanded unlike the early chosun dynasty. It was consequent upon a transition in the supply method of materials and labors for the construction. The government construction being enforced in chronic financial difficulties had to undergo lack of funds. Especially, a rising construction cost by purchasing lots of materials including wood, and by employing labors weighted the difficulties. In order to put forward a construction, new and various efforts besides diversification in sources of finance ad been looked for. The efforts were driven in three parts which were to be the management of labor and materials, and the way of construction execution. As a result of spending a great effort to save cost, an extinguished improvement in the way of construction execution came out with 'Injungjeon-yeongkweon' in the year 1805.

• Journal of architectural history
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• v.7 no.1 s.14
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• pp.9-30
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• 1998

In the Chosun Dynasty, the wooden building materials for constructing the official buildings within a capital city were supplied by way of water transport, and they were stored at Hangang riverbanks. After being firstly treated with primary processed-goods there by several craftmen groups, they were carried in the relevant site of construction by cart. The purpose of this paper is to study the process of those supply, the roles of merchants and craftmen in the process.

• Journal of architectural history
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• v.29 no.5
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• pp.7-16
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• 2020

The Municipal Building of Busan was the first western-style building of Korea in 1879. It was also the predecessor of Busan Metropolitan City Hall. On the other hand, the Municipal Building of Busan was a symbolic structure that shows the history of Busan. The Municipal Building of Busan has inherited the construction location and site, including the speciality of Choryangwaegwan, and is a good example of the process of inheriting the authority of the former space through the appropriation of the building. The Municipal Building of Busan was relocated to the edge of the coast in 1934 because a small and dilapidated building failed to function properly. The relocation of the Municipal Building of Busan in 1934 was the origin of changing the coastal space in downtown. As a result, landfill sites along the coast were in the limelight and developed into the downtown area of Busan after Korea's liberation.

• Journal of architectural history
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• v.11 no.4 s.32
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• pp.117-128
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• 2002

This paper aims at proposing constructional intention and aesthetic consciousness in the architecture of Jajang-temple, which was originally built by the great monk, Jajang in 7c. The results are as follows : 1) The layout and form of buildings in Jajang-temple were remarkably followed the situations and shapes of natural rocks related to Gumwa legend about the original establishment of the temple. 2) As natural rocks were penetrated into both the inner and outer space of buildings and so artificial skills were more or less restrained, it seems to be short of geometrical regularity, symmetry and formal integrity. 3) However it can be said that these architectural treatments were based on the aesthetic consciousness, so called In-Cha and Jol-Bak, which were conceived by intellectual elites in Chosun dynasty.