• Journal for History of Mathematics
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• v.20 no.2
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• pp.33-46
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• 2007

In this Paper the change of trends over historical research of mathematics, that has been developed since 1970, is inquired. Most of all it deals with the controversy concerning so-called 'geometrical algebra'. It covers the contents of Euclid' work II. And the relation of the controversy with the change of direction over historical research of mathematics is examined.

• Atmosphere
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• v.32 no.1
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• pp.1-15
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• 2022

Recently, Japan's Meteorological Research Institute presented the d4PDF database (Database for Policy Decision-Making for Future Climate Change, d4PDF) through large-scale climate ensemble simulations to overcome uncertainty arising from variability when the general circulation model represents extreme-scale precipitation. In this study, the change of precipitation characteristics between the historical and future climate conditions in the Yongdam-dam basin was analyzed using the d4PDF data. The result shows that annual mean precipitation and seasonal mean precipitation increased by more than 10% in future climate conditions. This study also performed an analysis on the change of the return period rainfall. The annual maximum daily rainfall was extracted for each climatic condition, and the rainfall with each return period was estimated. In this process, we represent the extreme-scale rainfall corresponding to a very long return period without any statistical model and method as the d4PDF provides rainfall data during 3,000 years for historical climate conditions and during 5,400 years for future climate conditions. The rainfall with a 50-year return period under future climate conditions exceeded the rainfall with a 100-year return period under historical climate conditions. Consequently, in future climate conditions, the magnitude of rainfall increased at the same return period and, the return period decreased at the same magnitude of rainfall. In this study, by using the d4PDF data, it was possible to analyze the change in extreme magnitude of rainfall.

• The Korean Nurse
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• v.13 no.5 s.73
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• pp.10-14
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• 1974

• Journal of Korea Water Resources Association
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• v.53 no.8
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• pp.583-595
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• 2020

In this study, using the RCP scenario for Hyoja Drainage subbasin of Cheonggyecheon, we analyzed the change with the Historical and Future rainfall calculated from five GCMs models. As a result of analyzing the average rainfall by each GCMs model, the future rainfall increased by 35.30 to 208.65 mm from the historical rainfall. Future rainfall increased 1.73~16.84% than historical rainfall. In addition, the applicability of LID element technologies such as porous pavement, infiltration trench and green roof was analyzed using the SWMM model. And the applied weight and runoff for each LID element technology are analyzed. As a result of the analysis, although there was a difference for each GCMs model, the runoff increased by 2.58 to 28.78%. However, when single porous pavement and Infiltration trench were applied, Future rainfall decreased by 3.48% and 2.74%, 8.04% and 7.16% in INM-CM4 and MRI-CGCM3 models, respectively. Also, when the two types of LID element technologies were combined, the rainfall decreased by 2.74% and 2.89%, 7.16% and 7.31%, respectively. This is less than or similar to the historical rainfall runoff. As a result of applying the LID elemental technology, it was found that applying a green roof area of about 1/3 of the urban area is the most effective to secure the lag time of runoff. Moreover, when applying the LID method to the old downtown area, it is desirable to consider the priority order in the order of economic cost, maintenance, and cityscape.

• Journal of the Korean Society of Clothing and Textiles
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• v.17 no.1
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• pp.137-149
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• 1993

The concept of style including the external form and internal meaning provides a useful structure to clarify the historical phenomenon on dress. The purpose of this study was to explore surrealism related to the external form and internal meaning and the stylistic change of surrealism through 1930 and 1988 according the linked solution proposed by Brodsky. The results were as follows; 1. In terms of double roots including the external form and the internal meaning on the surrealism of dress, first, the external form was founded to be that each objects having symbolic meaning was dislocated from its original place to dress. Second, the aspects of internal meaning intended to represent not rational and external world but irrational as well as to reveal other nature of object or dress itself. 2. The change of surrealistic style on dress was characterised as "linked solution" change theory than cyclical change theory through the historical data from 1930 to 1988 of documentary sources.

• Korean Journal of Ecology and Environment
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• v.38 no.spc
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• pp.54-57
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• 2005

It is important to assess the change of water environment in the present and past. In this study, present-day water quality standards are applied to the expressions in literary works to reconstruct the historical water environment including the quality. As the result, the historical reconstruction of water quality has been made distribution of water quality from 1905 to 1935 for the Sumida River in Tokyo.

• Journal of the Korean Geographical Society
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• v.47 no.4
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• pp.568-591
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• 2012

Korean historical geography as a distinct subset of modern geography began with the path-breaking efforts of Do-Yang Roh in the second half of the 1940s. He was joined in 1960 by founding father Dr. Chan Lee who carried with himself the Berkeley geography he learned from Fred Kniffen, his advisor, and Robert West at Louisiana State University. Dr. Lee, the single-most important figure in the development of Korean historical geography, founded in 1988 the Association of Korean Cultural and Historical Geographers in order to pull together those interested in past geographies and geographical change. Korean historical geography took off in the 1980s when large numbers of doctoral theses were produced domestically and abroad and British cross-sectional methodology added. Diversity in research theme and methodology characterizes present-day Korean historical geography.

• Journal of the Korean Society of Clothing and Textiles
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• v.30 no.2 s.150
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• pp.338-347
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• 2006

Due to the complex environment in the ground, most of excavated costumes undergo deterioration and color change. To reduce the extent and intensity of the staining and to recover the original color or gray fabrics of excavated costumes, bleaching would be required. Excavated historical costumes are very delicate in nature, therefore, special care is needed in bleaching process. Several bleaching agents were selected and applied to the control cotton fabric and pre-deteriorated cotton fabrics to examine the change of color and physical properties after bleaching. A dual bleaching using hydrogen peroxide and sodiumborohydride showed the superior bleaching effect to the other bleaching agents. The strength of pre-deteriorated fabrics slightly increased after dual bleaching. The six historical costumes which belonged to General Duk-Ryung Kim's nephew's wife were dual bleached. They became remarkably cleaned and brightened. The treatments improved the appearance of costumes. By microscopic investigation, it is found that costumes did not show the damage after treatment. In conclusion, it is possible to bleach historical textiles without damage using appropriate bleaching agents like hydrogen peroxide and sodiumborohydride.

• The Research Journal of the Costume Culture
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• v.18 no.1
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• pp.44-63
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• 2010

The purpose of this study was to examine the process to manufacture costume design of main female characters of TV historical drama and suggest the costume, which is developed with contemporary taste. As study methods, the literature study using books and theses concerning costume, fine art, culture and history were used for theoretical background and the empirical study method manufacturing actual costume on the basis of literature and relic were used for dress manufacture. The study results were as follows. The costume was decided by researching historical investigation material on the basis of synopsis, grasping director's basic intention, setting design direction, preparing design map of each character, selecting style, detail, fabric and color, manufacturing sample and performing camera test. The design concept of was Modern & Chic & Clean, short & fitted chogori, chima with wide & abundant cocoon silhouette, clean & bright colors and 100% silk fabric. For the design discrimination of royal semi-formal costume, color was used to symbolize character and pattern was used to symbolize social status. In addition, detail change was adopted depending on the body shape of actor and there was almost no design discrimination in silhouette and fabric. Petticoat of the west, modernization of transitional pattern and change of detail were adopted as design elements to add contemporary taste.

• Journal of architectural history
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• v.31 no.3
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• pp.31-40
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• 2022

In the historical city center where overall development has not been made, it is not difficult to observe the asp ect of the urban change process over time accumulated. Seochon(西村), which collectively refers to 13 legal dong s in the west of Gyeongbokgung Palace, is also considered a representative historical village with high value as a historical and cultural cityscape because of historical context remains throughout the lot. Therefore, research ex amining the process of changing parcels in this area is useful for a more three-dimensional understanding of the presence of several layers of time. In this study, relationship between the opening time of each road, the river co ver process, and the current building establishment process is examined using maps after the pre-modern period and modern era. In addition, to examine the specific change process of individual lots using the old land register, building management ledger and cadastral map.