• Journal of Korean Library and Information Science Society
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• v.14
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• pp.149-179
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• 1987

The concept of a "switching language " between different indexing languages and information retrieval systems has been discussed since the mid-1960s. Some preliminary investigates into the feasibility of switching between mediating tool yielded positive results. The Broad system of ordering(BSO) , a general classification scheme for information exchange and switching, has been under development as a joint FID/UNESCO project since 1973. The purpose of this study is to find out the origin, development, definition, and principle of BSO. The results of the study can be summarized as follows: (1) BSO is a switching language for the purpose of interconnection of information system which is located different regions, or using different indexing languages. (2) BSO is in effect, fully faceted and broad classification system. (3) BSO is not only a subject code but also an ordering system. (4) BSO can be used information retrieval system because the notation of composite subjects is formed by combining notation. (5) BSO has to some extent sacrificed brevity by leaving large unused notational gap for future use. (6) The structure of the scheme is in no way dependent upon the notation. notation.

• English Language & Literature Teaching
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• v.16 no.4
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• pp.201-222
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• 2010

The purpose of this study is to investigate /l/-deletion in lC clusters which are composed of a lateral followed by consonants at syllable-final position in English. For this, I have analyzed /l/-deletion in words depending on conditions and theoretical analyses such as Sonority Sequencing Generalization, Cluster Simplification, Complex sounds and merger, and Feature Geometry, but they didn't offer a very satisfactory explanation to the phenomenon. Therefore, I adopted a historical approach in order to determine the cause and origin of /l/-deletion in lC clusters, and then as a phonological analysis tool, I relied on the constraints and their ranking in Optimal Theory framework for explaining /l/-deletion in the clusters more consistently. As a result, I can explain the phenomenon more explicitly than from the above mentioned analyses.

• Journal of the Korean Magnetics Society
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• v.20 no.5
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• pp.201-205
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• 2010

X-ray magnetic circular dichroism (XMCD) has been used as an important tool of magnetics due to its unique abilities to measure element-specific magnetic properties and to separate the orbital and the spin magnetic moments. These abilities allow researchers to access the microscopic origin of the magnetic properties of transition metal and rare earth compounds. In this report, I explain the principle of XMCD and the experimental set-up. Recent a few research examples using XMCD will be also introduced.

• Journal of the Korean Society of Manufacturing Technology Engineers
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• v.22 no.2
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• pp.179-184
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• 2013

In this article, we introduce the study case of technology that can automatically compensate the errors of these factors of a machine during processing on the machine tool's CNC(Computerized Numerical Controller) in real time. The biggest factors that lower the machining accuracy are thermal deformation and chatter vibration. This study is related to the detection and compensation of thermal deformation and chatter vibration that can compensate for faster and produce processed goods with more precision by autonomous compensation. In addition, this study is related to the active control of vibration during machining, monitoring of cutting force and auto recognition of machining axes origin. Thus, we attempt to introduce the related contents of the development we have made in this article.

• Proceedings of the Korean Magnestics Society Conference
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• 2003.06a
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• pp.266-267
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• 2003

The most distinguishing character of diluted magnetic semiconductors (DMSs) is a strong interaction between sp-carriers and localized d-spins (sp-d exchange interaction). Recently many "room-temperature (RT) ferromagnetic DMS" have been reported. However, it should be noted that their sp-d exchange interactions have not been confirmed yet. The lack of a clear evidence of the sp-d exchange interaction causes the controversy on the origin of the observed ferromagnetism. For the detection of the sp-d exchange interaction, magneto-optical spectroscopy such as a magnetic circular dichroism (MCD) measurement is the most powerful tool. By using the MCD spectroscopy, we have shown the sp-d exchange interactions in Zn$_{l-x}$Cr$_{x}$Te. Recently, we have obtained the RT ferromagnetism in a Zn$_{l-x}$Cr$_{x}$Te (x = 0.20) film.0) film.

• Journal of the Korea Furniture Society
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• v.23 no.3
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• pp.305-316
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• 2012

This study considered stools not just as a tool for sitting but with their symbolicity as well. Regarding the changes and meanings of general stools and X-stools, this paper studied their images and explanations as well as literatures by quoting as it limited their range from the ancient times till Neo-classicism. In conclusion, the origin of stools exists in consciousness and also the social hierarchy of authority. There still remain the elements of X in any way along with the functions. This proves that furniture has reason for existence even today not just for its functions but something beyond that. Along with the historic flow of X-stools, we should know that there is diversity of thinking in the area of stools. In understanding furniture design or furniture, now is the time to approach to it in various ways, and it is expected that new design can be born through that thinking.

• Korean Journal of Oriental Medicine
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• v.9 no.1
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• pp.113-122
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• 2003

In the present paper, morphological characteristic and PCR analysis were carried not to identify the medicinal origins of Peucedanum decursivum and Anthriscus sylvestris. Some samples in Korean. markets were Peucedanum decursivum misused with rhizomes of Anthriscus sylvestris. The main. origin of Peucedanum decursivum producted was quite different from those of Anthriscus sylvestris in the morphological characteristics. And PCR analysis, the three primer has developed into anew tool for identification of Peucedanum decursivum and Anthriscus sylvestris.

• Journal of Microbiology and Biotechnology
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• v.23 no.6
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• pp.837-842
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• 2013

A cryptic plasmid, pMBLR00, from Leuconostoc mesenteroides subsp. mesenteroides KCTC 3733 was isolated, characterized, and used for the construction of a cloning vector to engineer Leuconostoc species. pMBLR00 is a rolling circle replication plasmid, containing 3,370 base pairs. Sequence analysis revealed that pMBLR00 has 3 open reading frames: Cop (copy number control protein), Rep (replication protein), and Mob (mobilization protein). pMBLR00 replicates by rolling circle replication, which was confirmed by the presence of a conserved double-stranded origin and single-stranded DNA intermediates. An Escherichia coli-Leuconostoc shuttle vector, pMBLR02, was constructed and was able to replicate in Leuconostoc citreum 95. pMBLR02 could be a useful genetic tool for metabolic engineering and the genetic study of Leuconostoc species.

• Natural Product Sciences
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• v.21 no.3
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• pp.185-191
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• 2015

Comparative molecular analysis has been frequently adopted for the authentication of herbal medicines as well as the identification of botanical origins. Roots and rhizomes of the family Umbelliferae have been used as traditional herbal medicines to relieve various symptoms such as inflammation, neuralgia and paralysis in countries of East Asia. Since most herbal medicines of the Umbelliferae roots or rhizomes are generally supplied in the form of dried slices, morphological examination does not often provide sufficient evidence to identify the botanical origin. Using species-specific probes developed by the comparative analysis of nrDNA ITS sequences, a DNA chip was developed to identify herbal medicines for 13 species in the Umbelliferae. The developed DNA Chip proves its potential as a rapid, sensitive and effective tool for authenticating herbal medicines in future.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2005.04a
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• pp.429-432
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• 2005

Geophysical investigations, as a non-invasive method, were conducted at the former gas station site contaminated with fuel hydrocarbons. GPR (Ground Penetrating Radar) survey was performed to locate buried objects such as USTs (Underground Storage Tanks) and fuel pipes which might serve as a origin of the site contamination. Additional GPR investigation and a resistivity survey were conducted to map water table and to characterize shallow geologic structures of the site. The results of the study have shown that seven USTs including one unknown UST and buried fuel pipes are present, and that the groundwater elevation varies with topography from approximately 1.5 to 3m below the surface and the water table is located in the residual soils above the bedrock in the site. The results also show that the geophysical methods can be a very useful tool for the characterization of the contaminated site.