• Journal for History of Mathematics
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• v.12 no.1
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• pp.1-12
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• 1999

The first part of this thesis discusses the types and the properties of errors, one of which makes up systematic errors of measurements, removable by detecting their causes, the other errors of accidental causes which can not be removed. The final part of this thesis deals with the historical background of the Gaussian distribution by Hershel, Hagen, Laplace and Gauss from the late 18th century to the early 19th century. It can be concluded that the accidental idea and the treatment of accidental error distribution by Gauss Is the best one based on the assumption that the most probable value of true value is the arithmetic mean of data, obtained by repeated measurements of a given quantity.

• Journal for History of Mathematics
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• v.12 no.2
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• pp.143-149
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• 1999

Every finite solvable group is only a subgroup of an M-groups and all M-groups are solvable. Supersolvable group is an M-groups and also subgroups of solvable or supersolvable groups are solvable or supersolvable. But a subgroup of an M-groups need not be an M-groups . It has been studied that whether a normal subgroup or Hall subgroup of an M-groups is an M-groups or not. In this note, we investigate some historical research background on the M-groups and also we give some conditions that a normal subgroup of an M-groups is an M-groups and show that a solvable group is an M-group.

• Proceedings of the Korean Geotechical Society Conference
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• 2001.10a
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• pp.65-94
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• 2001

The use of PBD(prefabricated band drain)far ground improvement is rapidly increased due to the merit of construction period and cost, environmental preservation compared with other vertical drain method, and the development of material. This paper presents the historical review, theoretical background, design procedure and method, and typical construction example for the PBD. Also, the direction of further technical development and study is recommended.

• Journal of Korean Neurosurgical Society
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• v.66 no.3
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• pp.263-273
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• 2023

While the survival rate of preterm infants has increased dramatically over the last few decades, intraventricular hemorrhage and subsequent hydrocephalus remain major unsolved problems in neonatal intensive care. Once intraventricular hemorrhage occurs, severe neurological sequelae are inevitable. Treatment of this complicated pathology and achievement of favorable neurofunctional outcomes in fragile infants are crucial challenges for pediatric neurosurgeons. Fibrinolytic therapy, which chemically dissolves hematoma, is a promising and useful treatment method. In this paper, the historical background of fibrinolytic therapy for post-intraventricular hemorrhagic hydrocephalus in preterm infants is reviewed and a recent method of fibrinolytic therapy using urokinase is introduced.

• Journal of Digital Convergence
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• v.10 no.5
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• pp.239-244
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• 2012

This paper proposed a tour game using LBS based on smart phone. This game is based on the historical background of Silla and spatial background of GyoengJu. A Event of tour game uses a smartphone-based LBS. Game events has occurred by comparing pre-measured GPS values and smart phone A-GPS values. This paper has looked at game planning and run screen. In addition, the future direction of the game were discussed.

• International Journal of Knowledge Content Development & Technology
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• v.5 no.2
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• pp.11-24
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• 2015

It is common for archive libraries to provide public access to historical and ancient document image collections. It is common for such document images to require specialized processing in order to remove background noise and become more legible. Document images may be contaminated with noise during transmission, scanning or conversion to digital form. We can categorize noises by identifying their features and can search for similar patterns in a document image to choose appropriate methods for their removal. In this paper, we propose a hybrid binarization approach for improving the quality of old documents using a combination of global and local thresholding. This article also reviews noises that might appear in scanned document images and discusses some noise removal methods.

• Journal of the Korean Society for Library and Information Science
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• v.37 no.1
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• pp.127-149
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• 2003

This study, firstly, investigates the basic design type and special features of the shape and structure of The Grand People's Study House in North Korea which corresponds to The National Library of Korea in South Korea and the people's study house in the provinces that was unknown until now, the public library of North Korea with the combined type of school(student) library and public(adult) library in South Korea, and university libraries. Secondly, by analyzing the establishment background, documentary records and others, we researched the historical background of present architectural type and design, and the general difference from libraries in South Korea.

• Journal of architectural history
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• v.3 no.1
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• pp.143-159
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• 1994

Ornament in late nineteenth century Art Nouveau movement, especially abstract ornament in Viennese Art Nouveau, has a very complex aesthetical background. Ornament, for them was not just decorations in outer appearance, but a determinant element of formal languages. Abstract ornament in Viennese Art Nouveau has its theoretical and aesthetical bases in the Interpretation of nature, that is, the theory of the abstract ornament was founded on a new interpretation of nature, which, in its turn, was derived from the differentiational selection of the contemporary views of nature. The modernity of abstract ornament consists in the very fact that it was founded on a new interpretation of nature. This study alms at reviewing how the new interpretation of nature by abstract ornament criticized, rejected and accepted the contemporary views of nature. The overall tendency of this study is to synthesize and analyze the historical background of Viennes Art-Nouveau in regard to aesthetic theories of nature. The analysis method of this study is interpretation of written documents which are related to the issue.

• Cross-Cultural Studies
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• v.31
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• pp.177-196
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• 2013

This paper is the study of literary modernism school(新感覺派 xinganjuepai), appeared in the early 20th century in China and Japan. This literary modernism, developed in Japan in the 1920s, was developed in China after 10 years in the 1930s. Chinese literary modernism was influenced by the Japanese school. However, the following occurs the difference in modernism caused by background of the two countries. Japanese school of literary modernism was formed by a backlash against the proletarian literature. The rivalry between Japanese proletarian literature and literary modernism occurred in 1920's. Literary modernism in China occurred in the course of the development of the proletarian literature, as part. In addition, China's literary writers of modernism have expressed their support proletarian literature for the position. This difference between the two countries can be caused by the difference of historical background (imperial and colonial) in early 20th century.

• Journal of Conservation Science
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• v.35 no.1
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• pp.1-10
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• 2019

This study provides a comprehensive evaluation of general characteristics of sized silk fabrics for the painting purpose. Two particular types of silk fabrics used for painting background were compared: a recreation of historical material and a mass produced material of present day. The sizing process made the surface characteristics of the silk fabrics more suitable for painting. The dyeing properties of the fabrics were related to the surface area of the fabrics, and had no significant effect on their mechanical properties. The antibacterial activity of the tannin-based natural dyestuffs were maintained after the sizing. The performance assessment by the KES-FB system showed that the fabrics are more prone to deteriorate after the sizing because the glue layer receives the most of the physical stresses.