• Communications for Statistical Applications and Methods
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• 제25권2호
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• pp.131-157
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• 2018

We propose a robust event date model to estimate the date of a target event by a combination of individual dates obtained from archaeological artifacts assumed to be contemporaneous. These dates are affected by errors of different types: laboratory and calibration curve errors, irreducible errors related to contaminations, and taphonomic disturbances, hence the possible presence of outliers. Modeling based on a hierarchical Bayesian statistical approach provides a simple way to automatically penalize outlying data without having to remove them from the dataset. Prior information on individual irreducible errors is introduced using a uniform shrinkage density with minimal assumptions about Bayesian parameters. We show that the event date model is more robust than models implemented in BCal or OxCal, although it generally yields less precise credibility intervals. The model is extended in the case of stratigraphic sequences that involve several events with temporal order constraints (relative dating), or with duration, hiatus constraints. Calculations are based on Markov chain Monte Carlo (MCMC) numerical techniques and can be performed using ChronoModel software which is freeware, open source and cross-platform. Features of the software are presented in Vibet et al. (ChronoModel v1.5 user's manual, 2016). We finally compare our prior on event dates implemented in the ChronoModel with the prior in BCal and OxCal which involves supplementary parameters defined as boundaries to phases or sequences.

• KDI Journal of Economic Policy
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• 제37권2호
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• pp.64-97
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• 2015

This paper studies a series of capital market promotion policies Korea pursued over a 30-year period during its development era (1960s - 1980s). The purpose of this paper is twofold. The first purpose is to understand the policy approaches Korea took, and the second is to extract lessons that can benefit policymakers in the developing world, where capital market promotion is an important policy goal. There are two key features of Korea's capital market promotion policies. First, the government was actively involved, sometimes indirectly by giving tax incentives to encourage IPOs. However, in other times, it was directly involved by giving IPO orders and threatening those that did not comply. No stock exchange in a developed country has ever experienced such government involvement. Combined with rapid economic growth, this interventionist approached allowed the Korean stock market to experience phenomenal growth over a short period of time. Second, the capital market promotion policies had multiple objectives. One was to mobilize domestic capital for economic development. Another was to lower firms' debt-to-equity ratios. Most interestingly, however, the Korean government wanted to popularize stock ownership, thereby allowing ordinary Koreans to share in the fruits of economic growth.

• 한국환경과학회지
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• 제25권12호
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• pp.1673-1688
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• 2016

Gyeonghuigung palace is an important site as it was the secondary palace in Hanyang from the $17^{th}$ century to the mid-$19^{th}$ century. Its original state was lost because a number of buildings were damaged and the palace area was reduced. The entire palace can be seen only in "Seogwoldoan" a drawing of the western palace. With "Seogwoldoan" to show the complete configuration of Gyeonghuigung palace in detail as the main data and other relevant data used as supplementary sources, the aim of this work was to identify the figurative features around the plantings and the space configuration of the royal garden in Gyeonghuigung palace. The space configuration observed in the royal gardens in Gyeonghuigung palace deviated from the norms and strict systems of royal palaces. The free and uninhibited configuration of the royal garden was allowed in Gyeonghuigung palace because it was built as a secondary palace in a lower hierarchy. Furthermore, a royal garden characterized by unique and unlimited planting was created, with several spaces acting as both royal garden and rear garden as the rear gardens could not be separately configured due to the narrow space of Gyeonghuigung palace.

• 복식문화연구
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• 제27권6호
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• pp.599-614
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• 2019

The aim of this study to provide basic reference data for the development of video contents used in pattern drafting education and to explore the possibility of utilizing YouTube videos in such education. Subject videos were selected using the number of views. A total of 596 videos and 28 channels were analyzed for the period July to September 2019 and the results are as follows. With regard to content, there were 27 pattern drafting items, the majority being dress, pants, skirt, blouse and sleeve drafting, although high-level content such as cowl, bustier, corset patterns were also available. Therefore, there is a high likelihood that YouTube videos could be used as educational material, especially as supplementary references to provide specific examples and easy explanations for difficult concepts or method, for students majoring in this field. However, as most videos currently focus on a few items, expanding video content to features a wider variety of clothing items at different levels is necessary. With regard to video length, it mostly ranged from 10 to 15 minutes. It is not advisable to create lengthy lecture-style videos expounding on different principles or variations in pattern drafting when developing educational video material.

• 한국실내디자인학회논문집
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• 제15권2호
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• pp.108-117
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• 2006

This study is to promote barrier-free environment to accommodate the request and the need for accessibility and convenience of disabled people including pregnant women, children and the elderly in using civic service offices which are supposed to play a role as community centers. This study researches the current state of facilities for convenience and analyzes the result according to the type of reasons which prevent disabled persons to get the accessibility and convenience for the information as well as the facilities. Sample cases are 15 civic service offices which are newly built after 1998 in the city of Daegu. There are found three types of problems about convenient facilities, which are the first cases with facilities not installed, the second cases with facilities not properly installed according to the rule, and the third cases with facilities installed properly according to the rule but inconvenient for the actual use. This study proposes a more critical process for the building permit to promote the rate of proper installation of convenience facilities, and the supplementary law with more specific regulations to improve the physical environment for the actual use of physically disabled people.

• 한국실내디자인학회논문집
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• 제21권6호
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• pp.147-157
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• 2012

This paper aims to examine the fundamental relationship of what principles cause the aesthetic shapes in Korean sarangbang furniture of the $19^{th}$ century. Focusing on the Greimas' isotopic and semantic structure analysis, this research analyzed the traditional Korean men's furniture in four steps; signifier analysis, isotopic analysis, semantic structure analysis, and comprehensive interpretation. The results show that the expressive qualities of sarangbang furniture included visual symmetric aesthetics, and the hues of natural materials with dark tones. The manufacturing process emphasized the characteristics of natural materials; while diversity was respected in decorations, function as restrained form was also important with a concise image. Through these characteristics, sarangbang furniture revealed a balance, a harmony of contrastive elements, and a restrained aesthetics. Within these qualities, it was seen that aesthetic principles, such as "severance and communication," "artifice and nature," "restraint and manifestation," "toughness and softness," "filling and emptying" and "decoration and utility" were in a mutually supplementary relationship. At the basis of this aesthetic thought appears to be Confucianism, which had been the model for seonbi politics and scholarship.

• 대기
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• 제32권4호
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• pp.297-306
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• 2022

We examined potential seasonal prediction of the Korean surface temperature using the relationships between the Arctic Sea Ice Area (SIA) in autumn and the temperature in the following July and February at 850 hPa in East Asia (EA). The Surface Air Temperature (SAT) over Korea shows a similar relationship to that for EA. Since 2007, reduction of autumn SIA has been followed by warming in Korea in July. The regional distribution shows strong correlations in the southern and eastern coastal areas of Korea. The correlations in the sea surface temperature shows the maximum values in July around the Korean Peninsula, consistent with the coastal regions in which the maximum correlations in the Korean SAT are seen. In February, the response of the SAT to the SIA is the opposite of that for the July temperature. The autumn sea ice reduction is followed by cooling over Korea in February, although the magnitude is small. Cooling in the Korean Peninsula in February may be related to planetary wave-like features. Examining the autumn Arctic sea ice variation would be helpful for seasonal prediction of the Korean surface temperature, mostly in July and somewhat in February. Particularly in July, the regression line would be useful as supplementary information for seasonal temperature prediction.

• Korean Journal of Radiology
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• 제21권4호
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• pp.505-508
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• 2020

The epidemic of 2019 novel coronavirus, later named as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is still gradually spreading worldwide. The nucleic acid test or genetic sequencing serves as the gold standard method for confirmation of infection, yet several recent studies have reported false-negative results of real-time reverse-transcriptase polymerase chain reaction (rRT-PCR). Here, we report two representative false-negative cases and discuss the supplementary role of clinical data with rRT-PCR, including laboratory examination results and computed tomography features. Coinfection with SARS-COV-2 and other viruses has been discussed as well.

• 한국수학교육학회지시리즈A:수학교육
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• 제62권4호
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• pp.531-549
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• 2023

수학 지도서는 교사 학습을 지원하는 중요한 자료임에도 불구하고 초등학교 수학 지도서가 교사 학습을 지원하는 양상을 탐색한 연구는 거의 없다. 본 연구의 목적은 우리나라 초등학교 3~4학년군 수학 지도서의 교육적 특징을 분석하는 것이었다. 이를 위해 10종의 수학 지도서에 대해 수, 연산, 도형, 측정, 자료와 가능성, 규칙성 영역에 부합하는 6개 단원을 선정하여 '우리나라 수학 교육과정 자원의 교사 학습 기회(Teacher Learning Opportunities in Korean Mathematics Curriculum Materials)'의 7가지 차원별로 수학 지도서의 교육적 특징(educative features)을 분석하였다. 분석 결과 지도서에는 교수를 위한 수학 내용 지식이 풍부히 제공되지만 학생의 오류나 오개념 정보는 충분하지 않았다. 매 차시 수업 담화의 전반적인 흐름과 요점을 제공했지만, 근거나 구체적인 전략은 부족했다. 수학 내용 측면의 과정중심평가방안, 보충 및 심화 활동이 다수 있었지만 맞춤형 수업에 대한 설명은 부족했다. 교구 및 공학 도구 활용에 관한 교사 지식은 특정 단원이나 내용에 대해서만 제시되었고, 수학 공동체에 관한 교사 지식은 수학 교과 역량, 수학 교실 문화, 동기 유발에 관한 것이었다. 연구 결과를 토대로, 교사 학습을 적극적으로 지원하도록 수학 지도서를 개선하는 것에 대한 시사점을 제시하였다.

• 과학교육연구지
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• 제38권3호
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• pp.641-656
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• 2014

본 연구에서는 2007년 개정 교육과정에 의해 편찬된 초등학교 과학 교과서 3~6학년의 1학기에 실린 시각 자료의 특성을 조사하고자 하였다. 이를 위해 초등 과학 교과서에 실린 시각 자료의 종류, 역할, 사회-기호학적인 특징을 함께 확인하고 서로 간의 관계를 분석하였다. 연구 결과 2007년 개정 교육과정에 의해 편찬된 초등학교 과학 교과서에서 가장 높은 빈도로 사용 된 시각 자료의 종류는 사진과 그림으로, 사진과 그림을 제외한 시각 자료들의 사용 빈도는 매우 낮았다. 그리고 시각 자료의 역할 중 장식적 역할의 시각 자료 사용 빈도가 저학년에서 고학년으로 올라가면서 급격히 낮아짐을 확인할 수 있고, 예시적 역할과 설명 보충적 역할을 하는 시각 자료가 대부분의 비율을 차지하고 있는데 이는 시각 자료가 과학 학습 내용에 충실하게 반영되고 있음을 의미한다. 또한 활동지 역할의 시각 자료 사용 빈도가 점차 높아지고 있는데 이는 학생들이 직접 탐구 과정에 참여하거나 탐구 결과를 정리하는 활동이 많아짐을 의미한다. 시각 자료의 사회-기호학적인 특징을 분석하면 초등학교 과학 교과서에 사용된 시각자료가 '시각 자료의 형태', '시각 자료의 기능', '시각 자료와의 거리', '시각 자료의 수평각도', '그림자 효과'에서 학생과의 접근성 정도가 높은 것으로 나타났다. 아울러 시각 자료의 종류, 역할 그리고 사회-기호학적인 특징 사이에 밀접한 관계가 있음을 확인 할 수 있었다. 시각 자료의 종류 중 사진은 대부분 시각 자료의 역할 중 예시적 역할과 설명 보충적 역할로 제시되면서 사회-기호학적인 특징 중 실제형, 내러티브-은유형, 실제적인 그림자 효과 등을 나타냈다. 이와 같이, 교과서에 제시된 시각 자료의 종류에 따라 역할이 달라지고, 그 시각 자료에 맞는 사회-기호학적인 특징을 갖게 되면서 각각의 시각 자료가 갖는 학생들과의 접근성 정도를 확인할 수 있었다.