• 대한수학교육학회지:수학교육학연구
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• 제8권2호
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• pp.485-494
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• 1998

This study is on the theory of Piaget's reflective abstraction and the mechanism of the development of knowledge and the history of algebra and its application to understand the difficulties that many students have in learning algebra. Piaget considers the development of knowledge as a linear process. The stages in the construction of different forms of knowledge are sequential and each stage begins with reorganization. The reorganization consists of the projection onto a higher level from the lower level and the reflection which reconstructs and reorganizes within a lager system that is transferred by profection. Piaget shows that the mechanisms mediating transitions from one historical period to the next are analogous to those mediating the transition from one psychogenetic stage to the next and characterizes the mechanism as the intra, inter, trans sequence. The historical development of algebra is characterized by three periods, which are intra inter, transoperational. The analysis of the history of algebra by the mechanism explains why the difficulties that students have in learning algebra occur and shows that the roles of teachers are important to help students to overcome the difficulties.

• 대한안전경영과학회지
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• 제14권2호
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• pp.253-263
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• 2012

Although the national technical qualification scheme has a historical background for thirty-five years, it hasn't any study of an obvious cause analysis, effective counterplan and analysis relation to its historical changes. This paper analyses the internal and external factors of technical qualification policy of the Human resources development service of Korea using PEST and SWOT and surveys the influence on its environment and the variation cause of the ratio of successful applicants to the qualification scheme. This paper also suggests systematically the direction for development of the technical qualification scheme using FMEA. Thus, this study assists to construct rapidly a correspondence system to the environment change simultaneously to determine decision making to the marketing policy.

• 천문학회보
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• 제40권1호
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• pp.51.1-51.1
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• 2015

Over several decades, a historical review of receiver development for radio astronomy in Korea such TRAO, SRAO and KVN will be presented.

• 천문학논총
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• 제35권3호
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• pp.29-41
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• 2020

Korea has numerous astronomical resources, such as observational records, star maps, and a wealth of literature, covering the period from the Three Kingdoms (54 BC - 932 AD) to the Joseon Dynasty (1392 - 1910 AD). The research activities related to these resources have been limited to those by individual researchers. It is now necessary to conduct research by efficiently and systematically collecting and managing Korean astronomical records using an accessible Web environment. The purpose of this study is to complete a system that enables researchers systematically to collect and verify a large number of historical records related to astronomical phenomena in a Web environment. In 2017, a preliminary survey was conducted, and the requirements pertaining to an implementation target system were devised. In addition, a joint development plan was carried out by the developer, lasting three months in 2018. Although the system is relatively simple, it is the first system to be attempted in the historical astronomy field. In order to proceed with the systematic development, the software development methodology is applied to the entire process from deriving the requirements of researchers to completing the system. The completed system is verified through integrated function and performance tests. The functional test is repeated while modifying and testing the system based on various test scenarios. The performance test uses a performance measurement test tool that takes measurements by setting up a virtual operation environment. The developed system is now in normal operation after a one-year trial period. Researchers who become authorized to use the system can use it to verify the accuracy of data and to suggest improvements. The collected feedback will be reflected in future systems, and Korean astronomical records will be available for use internationally through a multilingual service.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2006년도 학술발표회 논문집
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• pp.1166-1171
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• 2006

Drought is defined by differently for the several scientific and technical fields such as hydrological drought, agricultural drought, meteorological drought, climatological drought, atmospheric drought. A lot of drought indices have been developed to quantify drought severity levels. However these drought indices might be expressed differently as the drought conditions for specific period because the drought severity level is using different types of data on each condition. It is necessary for development of quantative drought representation methods by drought index application. In this research, the reaction to the historical droughts is analyzed after estimation of PDSI, SPI and MSWSI(Modified Surface Water Supply Index) in south korean territory. Lastly the drought representation methods were examiner combining the drought indices by drought indices. The arithmetic mean drought indices that include PDSI, SPI, in yearly basis from 1971 to 2001 and MSWSI in yearly basis from 1974 to 2001 were estimated through the whole nation. The applicability of drought indices are examined based on the observed drought data for national and regional droughts. The result shows that PDSI, SPI(3), SPI(6), and MSWSI have proven to be sensitive enough to the historical drought. The correlation analysis of each drought index was conducted whether they could show the long and short term drought equally. The analysis of how appropriately represent for the historical drought was used for determining for the combined drought index. Consequently, PDSI, SPI(3), SPI(6), and MSWSI have been appeared as suitable indices for the development of quantitative drought representation methods. For the decision of weight on combining PDSI, SPI(3), SPI(6), and MSWSI, drought map was made for eighteen alternative to decide weight. The results showed that PDSI(20%), SPI(3)(60%), SPI(6)(10%), and MSWSI(10%) have been the most well matched weights. Using selected weights of each drought indices and by reconstructing the national mean drought severity on yearly basis, the fact that the year of historical drought is in accordance with the verified one for drought representation. In short, the acquired technique using combined drought index can be used for useful and believable quantitative method of drought analysis.

• 대한한의학원전학회지
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• 제23권2호
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• pp.89-105
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• 2010

Research methodology on Traditional Medicine in East Asia refers to logical thinking system, empirical positivism system and methodology of developing these knowledge systems. Logical thinking system of abstract concepts such as analogy or abduction and positivism system of reasonable explanation such as the five elements and their characteristic theory have been used in various ways empirically or in the form of humanities and knowledge system was developed through parallel structure of empirical positivism and exegetical studies. After the 16th century, evidence was required along with the tradition of putting emphasis on rationality, logicality and empirical positivism and characteristics of medical humanities can be found in emphasizing on medical ethics. Data that can be considered as structural review paper or meta analysis from original data of research on Traditional East Asian Medicine should be evaluated as historical evidence which is equivalent to specialist opinion, descriptive disease research, single case report or case series. Historical evidence based medicine is a research method using Historical evidence to selectively support data that are faithful to traditional theory with higher possibility to be used in future traditional east Asian medicine that links between traditional knowledge and scientific research methodology. Moreover, historical evidence based medicine tries to re-evaluate the value of traditional knowledge and ultimately, guides the direction of development of traditional medicine through scientific rationality based on history and culture.

• Journal of Chest Surgery
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• 제52권4호
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• pp.191-194
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• 2019

The Korean Society for Thoracic and Cardiovascular Surgery (KTCVS) was founded in 1968 and celebrated the 50th anniversary of its founding in 2018. The launch of the KTCVS may seem somewhat recent, given that the American Association for Thoracic Surgery was founded in 1917. However, considering the circumstances of the Korean medical community after the Japanese occupation (1910-1945), World War II (1940-1945), and the Korean War (1950-1953), this apparent delay is understandable. Even before the foundation of the KTCVS, the early pioneers of thoracic and cardiovascular surgery promptly adopted medical technologies from more advanced countries such as the United States, and contributed significantly to both cardiac and thoracic surgery despite difficult circumstances. In 2012, before the 50th anniversary of the founding of the KTCVS, members shared the opinion that objective records of the activities of the early pioneers should be identified and preserved, and reacted positively towards the necessity for historians who would preserve such records. With this background, the Historical Records Preservation Committee of the KTCVS (hereinafter, referred to as 'the Committee') was launched. The Committee published a white paper on the history of thoracic and cardiovascular surgery in 2015 and held an exhibition of the achievements of the pioneers at the 50th anniversary of the founding of the KTCVS. The Committee also published a book entitled "The history of Korean thoracic surgery with photographs: celebrating the 50th anniversary of the society." The Committee will keep making efforts to find and preserve materials related to activities during the early development of thoracic and cardiovascular surgery in Korea.

• 대한한의학원전학회지
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• 제34권1호
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• pp.67-87
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• 2021

Objectives :The purpose of this paper is to evaluate the significance of the 『Joseonbogeonsa』 by examining North Korea's perspective in its documentation of the history of medicine, and to further understand North Korea's perception of Korean Traditional Medicine. Methods : The focus of examination was on the perspective of historical description as shown in the first chapter of the 『Joseonbogeonsa』. Its unique features were made clear through comparison with historical texts of medicine of South Korea such as the 『History of Medicine in Korea』, and the 『History of Korean Medicine』. In order to grasp the current of historical research in North Korea, various Traditional Medicine related dictionaries and academic journals of North Korea along with the 『Joseontongsa』 were examined. Results & Conclusions : The historical views of the 『Joseonbogeonsa』 could be categorized as nation-focused, materialistic, and nationalistic. These are core elements that make up North Korea's self-reliance ideology, which influenced the interpretation of medical facts. While the text is valuable in that it introduced new historical material along with its interpretation, and argued for a more independent development of Traditional Medicine, its limitation of interpreting historical material from a conclusive, pre-determined standpoint cannot be overlooked. The North Korean 'Goryeo Medicine' is defined by its historical nature rather than academic characteristics, and its significance is determined by its clinical efficacy rather than theoretical value.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2005년도 추계 종합학술대회 논문집
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• pp.75-80
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• 2005

일상생활을 떠나 새로운 지역에 대한 호기심과 기대로 여행하는 일은 관광의 시작이며 여행과정에서 체험하는 다양한 경험은 현대인의 생활의 질을 결정하는 중요인자로 인식되고 있다. 한국의 세계문화유산 관광자원은 외래관광객을 유인하는 주요관광매력이지만 이에 대한 관광자원개발이 미비하여 이에 대한 적극적이며 효율적인 자원개발이 필요하다.

• Journal of the Korean Institute of Landscape Architecture International Edition
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• 제1호
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• pp.127-130
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• 2001

Suzhou historic gardens include classical gardens, places of interest and palaces built by hills and waters. They are geographically distributed in the ancient city and the suburbs. Considered as both chinese and world class historic cultural heritage, these precious tourist resources have been included in the systematic urban planning of Suzhou and they are an integral part of the urban green plan and symbol and characteristic of the urban view. These gardens are also important for tourist industry-one of the pillar industries Suzhou. Therefore, historic gardens play an especially important role in the city's continuous development and it becomes an important task to make good protection, planning, construction and management of these historic gardens.