• Journal of architectural history
• /
• v.18 no.6
• /
• pp.7-22
• /
• 2009

This writing is to understand some trends and its meaning of Regionalism Architecture in Jeju Island since 1950's. This thesis began with an interest in the identity crisis implicit in the simultaneous striving for modernism and the so-called regional values in Jeju Island. Regionalism is a response in architectural terms to re-establish continuity in a given place between past and present forms, and also a unique result related to particular places, cultures and climates in region. This is one way of looking at the issues of regional identity. The study began by observing the general characteristics of contemporary ideas on Regionalism in Jeju architecture. This means that tracing the history of development of Regionalism architecture in research area is not the focus of this thesis. The thesis demonstrates that Regionalism architectures in Jeju shows some trends related to the local cultural elements (or ideas) such like traditional architectural forms, natural environment, local construction-materials, etc. In summation, in the perspective of Regionalism architecture,mostofbuildingsin Jeju bring out them only as vernacular architecture as it was once produced, by the simple combination and imitation without any creative interaction of the regional culture. I stress the point in this paper that, in over the last fifty years, there have been very narrowed attempts to design the regional values in the main, and also point out that there are problems in the manner in which local architects have gone about trying to define the regional themes. So, a grate depth is required to understand the phenomenon that Jeju area is with its various nuances of traditions, art, culture, climate and light and then to reinterpret it into the modern building type with all the high sense. In addition to that, some conclusions are reached on future directions and the significance of the study.

• Journal of Ocean Engineering and Technology
• /
• v.19 no.4 s.65
• /
• pp.28-34
• /
• 2005

In the study application of volcanic scoria concrete to artificial reefs is investigated. Volcanic scoria is a natural volcanic product that shows light weight, mil/i-porous, and far-infrared irradiation characteristics. The properties of volcanic scoria concrete using Jeju scoria aggregate are evaluated by conducting a comprehensive series of tests on strength and void ratio. It is concluded that the volcanic scoria concrete has the sufficient strength of 4MPa-13MPa and adequate void ratio of $12\%-35\%$ to be accepted as artificial reef concrete. The field experiments are performed through observation by scuba diver's at the Seogwipo coast. Porous specimen and plane concrete specimen are prepared for comparison purposes. Seasonal changes of soft coral on the two series of test specimens were have been observed from Apr. 9, 2004 to Mar. 18, 2005. The soft coral is well grown on the porous specimen however there are no significant changes on the conventional plain concrete specimen. Thus it is concluded that the volcanic scoria concrete is highly suitable as artificial reef concrete.

• Journal of The Korean Astronomical Society
• /
• v.51 no.5
• /
• pp.143-153
• /
• 2018

We present the first results of the invariant point (IVP) coordinates of the KVN Ulsan and Tamna radio telescopes. To determine the IVP coordinates in the geocentric frame (ITRF2014), a coordinate transformation method from the local frame, in which it is possible to survey using the optical instrument, to the geocentric frame was adopted. The least-square circles are fitted in three dimensions using the Gauss-Newton method to determine the azimuth and elevation axes in the local frame. The IVP in the local frame is defined as the mean value of the intersection points of the azimuth axis and the orthogonal vector between the azimuth and elevation axes. The geocentric coordinates of the IVP are determined by obtaining the seven transformation parameters between the local frame and the east-north-up (ENU) geodetic frame. The axis-offset between the azimuth and elevation axes is also estimated. To validate the results, the variation of coordinates of the GNSS station installed at KVN Ulsan was compared to the movement of the IVP coordinates over 9 months, showing good agreement in both magnitude and direction. This result will provide an important basis for geodetic and astrometric applications.

• Journal of Ocean Engineering and Technology
• /
• v.21 no.3 s.76
• /
• pp.58-64
• /
• 2007

New artificial fishing reefs are developed using modified sulfur concrete. Modified sulfur concrete, which is made of by-product aggregates and modified sulfur binder, has good properties, including high density, less water absorption, high strength, high salt resistance, and good affinity for living organisms. This paper shows the mechanical properties of modified sulfur concrete and its field tests under the sea. We have found that the pH-neutral materials attach microalgae and seaweed more readily, compared to the pH-high materials.

• Journal for History of Mathematics
• /
• v.19 no.3
• /
• pp.57-70
• /
• 2006

In this paper, we study the meaning and symbols of the number three and the structure of dividing into three parts in the religions, views of the world and the nature. Also we investigate the meaning of the number three, and the structure of dividing into three in the Samsung myth. According to legend, the 'Three Names' (Samsung-Yang, Ko and Pu) which are three demi-gods emerged from Samsung-hyeol(called Moheung-hyeol), and became the progenitors of the Jeju people who founded the Kingdom of Tamna.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2002.11c
• /
• pp.1961-1964
• /
• 2002

현재의 소프트웨어 개발 패러다임은 전체 시스템에서 독립적인 업무 또는 기능을 수행하는 단위이고 유지보수에 필요한 교체 가능한 모듈로 재사용성과 대치성을 제공하는 컴포넌트기반 개발(CBD:Component Based Development)이 연구되고 있다. 기업이나 조직은 웹을 통한 비즈니스 기능의 확대에 따른 효과적이고 빠른 개발과 적용을 요구함에 따라, 에이전트를 통한 유연한 서비스를 제공하고자 한다. 본 논문에서는 비즈니스 영역에 대한 에이전트의 효과적인 개발과 적용을 위해 컴포넌트, e-비즈니스 에이전트, 자원, 관리 관점을 고려하여, e-비즈니스 에이전트지향 컴포넌트기반 개발 프로세스(ebA-CBD:e-business Agent oriented Component Based Development)를 제안한다. 특히, e-비지니스 에이전트의 식별과 명제를 위해 ebA-CBD 매트릭스, ebA Architecture Model과 ebA-Spec.을 제시하며, 사례를 통해 프로세스의 이해성 및 사용성을 제공하고자 한다.

• 제어로봇시스템학회:학술대회논문집
• /
• 2005.06a
• /
• pp.2010-2014
• /
• 2005

Object detection and parameter estimation in point cloud data is a relevant subject to robotics, reverse engineering, computer vision, and sport mechanics. In this paper a software is presented for fully-automatic object detection and parameter estimation in unordered, incomplete and error-contaminated point cloud with a large number of data points. The software consists of three algorithmic modules each for object identification, point segmentation, and model fitting. The newly developed algorithms for orthogonal distance fitting (ODF) play a fundamental role in each of the three modules. The ODF algorithms estimate the model parameters by minimizing the square sum of the shortest distances between the model feature and the measurement points. Curvature analysis of the local quadric surfaces fitted to small patches of point cloud provides the necessary seed information for automatic model selection, point segmentation, and model fitting. The performance of the software on a variety of point cloud data will be demonstrated live.

• Journal of Environmental Science International
• /
• v.20 no.1
• /
• pp.71-79
• /
• 2011

In this study, a series of soil concrete mixtures were tested for the compressive strength according to ratio of aggregate to binder, compaction energy, maximum aggregate size, ratio of silica fume to cement, and ratio of water to binder. The optimum mixing ratio of soil concrete mixtures composed of volcaniclastic, cement, silica fume, concrete polymer and water were analysed. The test results for optimum proportion were as follows ; (1)ratio of aggregate to binder was 4 : 1, (2)compaction energy level was level 2, (3)maximum aggregate size was 13 mm, (4)ratio of silica fume to cement was 10%, (5)ratio of water to binder was 25%. Also, dry type construction techniques were applied using the optimum soil concrete mixture. From the results of this study, the compressive strength of soil concrete and construction techniques were suitable for making eco-friendly soil pavement.

• Journal of Environmental Science International
• /
• v.18 no.9
• /
• pp.993-1000
• /
• 2009

The development of a new type of soil-cement concrete pavement using volcaniclastic is the main purpose of this study. Various mixture ratios, specimens' penetration resistance, time of setting, slump flow of fleshly mixed concrete, compressive strength and color characteristics of hardened concrete were studied. It was concluded that the optimum weight ratio of cement:volcaniclastic to produce good properties of soil-cement concrete is 1:3 and the use of volcaniclastic as main aggregate can improve the concrete surface color that is warm earth-tone road color. Therefore, commercial development for soil-cement concrete pavement using volcaniclastic is highly promising.

• Journal of Fisheries and Marine Sciences Education
• /
• v.18 no.2
• /
• pp.108-121
• /
• 2006

The purpose of this study is to develop and to test the program for the improvement of preservice teachers' critical thinking ability. The main research problems to achieve the purpose of research are as follows; first, is the program for the improvement of preservice teachers' critical thinking ability effective to improve the critical thinking skills of preservice teachers? Second, is the program for the improvement of preservice teachers' critical thinking ability effective to improve the critical thinking dispositions of preservice teachers? To evaluate the effect of the program, 30(15; experimental group: 15; control group) sophomores were selected in Pusan. The conclusions of this research are as follows; first, there is a significant difference between experimental group and control group for critical thinking skills test. Second, there is no significant difference between experimental group and control group for critical thinking dispositions test.