• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 1999.12a
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• pp.362-368
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• 1999

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 2000.02a
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• pp.3-9
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• 2000

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 2000.02a
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• pp.492-498
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• 2000

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.6
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• pp.238-245
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• 2020

The objective of this study was to analyze the market structure of the Garak Agricultural Products Wholesale Market, which has the greatest influence among agricultural products wholesale markets and plays a key role in domestic agricultural products distribution. In addition, through analysis of the management efficiency of the wholesale market corporation, which is a major distributor of the Garak Market, the connection relationship between the market structure of the Garak Market and the management efficiency of the wholesale market corporation was able to be identified. From 2007 to 2018, it was found that the market structure of Garak Market was a monopoly. In addition, the average production efficiency of the five wholesale market corporations was 0.95, indicating that the wholesale market corporation in Garak Market has an efficient production structure with high output compared to input. Therefore, in order to activate the agricultural products wholesale market and protect the rights of producers and consumers based on the analysis results, it is necessary to implement a policy that can establish a competition system among agricultural products wholesale market distributors.

• Proceedings of the Microbiological Society of Korea Conference
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• 2005.05a
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• pp.188.4-188
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• 2005

• Proceedings of the Korean Society of Sericultural Science Conference
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• 2005.04a
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• pp.48-48
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• 2005

• Proceedings of the Korean Society of Crop Science Conference
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• 2004.04a
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• pp.212-213
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• 2004

• Journal of The Korean Society of Agricultural Engineers
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• v.58 no.3
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• pp.13-19
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• 2016

Element-focused network analysis method for truss structure is proposed. The propagation process of loads from external loads to connected other elements is similar to that of connections between nodes in accordance with attachment rule in a network. Here nodes indicate elements in a truss structure and edges represent propagated loads. Therefore, the flows of loads in a truss structure can be calculated using the network analysis method, and consequently the structure can also be analyzed. As a first step to analyze a truss structure as a network, we propose a local load transfer rule in accordance with the topology of elements, and then analyze the loads of the truss elements. Application of this method reveal that the internal loads and reactions caused by external loads can be accurately estimated. Consequently, truss structures can be considered as networks and network analysis method can be applied to further complex truss structures.

• Proceedings of the Korean Society of Agricultural Engineers Conference
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• 2003.10a
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• pp.123-126
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• 2003

The researches on the spacial structure analysis have been mainly accomplished with the qualitative analysis approaches and did not examine closely the attributes of spacial structure. The Space Syntax which is one of the methods of spacial structure analysis is performed usefully at home and abroad in order to analyze quantitatively the spacial structure and to be clear logically the physical structure. This study introduced the fundamental notions of Space Syntax and analyzed its applied research cases, and tried to find its applicable subjects for rural planning.

• Journal of Microbiology and Biotechnology
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• v.33 no.1
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• pp.28-34
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• 2023

Endoribonuclease YbeY is specific to the single-stranded RNA of ribosomal RNAs and small RNAs. This enzyme is essential for the maturation and quality control of ribosomal RNA in a wide range of bacteria and for virulence in some pathogenic bacteria. In this study, we determined the crystal structure of YbeY from Staphylococcus aureus at a resolution of 1.9 Å in the presence of zinc chloride. The structure showed a zinc ion at the active site and two molecules of tricarboxylic acid citrate, which were also derived from the crystallization conditions. Our structure showed the zinc ionbound local environment at the molecular level for the first time. Molecular comparisons were performed between the carboxylic moieties of citrate and the phosphate moiety of the RNA backbone, and a model of YbeY in complex with a single strand of RNA was subsequently constructed. Our findings provide molecular insights into how the YbeY enzyme recognizes singlestranded RNA in bacteria.