• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 2006.05a
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• pp.235-241
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• 2006

• Proceedings of the Korean Society of Crop Science Conference
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• 2006.04a
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• pp.484-485
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• 2006

• 한국약용작물학회:학술대회논문집
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• 2009.05a
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• pp.153-154
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• 2009

• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• v.23 no.1
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• pp.73-78
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• 2017

Background: The purpose of this study was to identify the effects of morphological Change of cervical spine to apply to neck retraction and extension regarding the straight deformity of cervical spine. Methods: A 40-year male subject with straight deformity of cervical spine participated in this study. The study subject underwent a cervical lateral radiography on the static position, neck retraction and neck extension on standing. Measurement method were using computer-based digital radiogram on a picture achieving computer system forthe centroid method, Cobb's angle and Jackson's angle. Results: Neck retraction was increased kyphosis on the C2-4 with lordosis on the C5-7. Neck extension was increased lordosis on the C2-7. Conclusions: These findings suggest that neck retraction was increased kyphosis and neck extension was increased lordosis based on the straight deformity of cervical spine. Therefore, we should be consider that neck extension exercise when increased lordosis for the patients of straight deformity of cervical spine.

• The Journal of Information Technology
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• v.5 no.4
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• pp.145-154
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• 2002

The Extension of Base is a fundamental Method to expend the moduli in RNS(Residue Number System). RNS has the benefit of parallelism and no carry propagation at each moduli, but division , extension of base and etc. is the problem of RNS in case of the operation speed.Generally this method is applied to system using Mixed Radix Conversion. it appears to decrease the size of Arithmetic Unit, but increasing the time of operation. So in this paper, the Improved Extension of Base is proposed using Chinese Remainder Theorem. it has the comparative small size and Improved speed.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.21 no.1
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• pp.164-172
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• 1997

Two parameter technique that uses far-field stress and displacement distributions was applied to composite laminates in order to calculate mode II energy release rate, $G_{II}$ . The $G_{II}$ calculated by two parameter technique was compared with that calculated from the crack closure method to inspect the effectiveness of two parameter technique. Sensitivity study of two parameter technique to the crack extension size was also performed. The results showed that both methods produced comparable $G_{II}$ results. In particular, it was found that although the crack closure method was affected by the crack extension size, the two parameter technique was less affected by the crack extension size.

• Structural Engineering and Mechanics
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• v.25 no.6
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• pp.733-751
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• 2007

The metis element method (Hung 1978) has been applied to analyse free edge interlaminar stresses and delamination in composite laminates, which are subjected to extension and bending. The paper recalls Lekhnitskii's solution for generalized plane strain state of composite laminate and Wang's singular solution for determination of stress singularity order and of eigen coefficients $C_m$ for delamination problem. Then the formulae of metis displacement finite element in two-dimensional problem are established. Computation of the stress intensity factors and the energy release rates are presented in details. The energy release rate, G, is computed by Irwin's virtual crack technique using metis elements. Finally, results of interlaminar stresses, the three stress intensity factors and the energy release rates for delamination crack in composite laminates under extension and bending are illustrated and compared with the literature to demonstrate the efficiency of the present method.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2021.05a
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• pp.273-274
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• 2021

This paper proposes a process to calculate the amount of construction and demolition (C&D) of underground vertical extension methods through considering the characteristics of used construction and demolished materials. The underground vertical extension methods analyzed in this paper were the bottom-up, normal top-down, and top-down methods with multi-post downward (MPD). In order to check the applicability of the proposed process, 24 illustrative examples were generated. The amount of C&D waste of the illustrative examples were calculated and compared. As the results, the top-down method with MPD was the most efficient method to reduce the amount of C&D waste.

• Journal of Agricultural Extension & Community Development
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• v.1 no.1
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• pp.67-74
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• 1994

The objectives of this study were to review the present situations of computer use, computer education and training, and attitude to computer of agricultural extension agents. The research subjects were 279 agricultural extension agents in 15 City and Gun Rural Extension Offices Which were sampled by random sampling method among 182 City and Gun Rural Extension Offices. The major findings of the study were as follows; 1. Only 28% of the agricultural extension agents had personal computer in their home. 2. Agricultural extension agents mainly used word processor program, but hardly used data base, spreadsheet, and computer language. 3. About 40% of the respondents had not chance to be participated in computer education/training program yet. 4. Generally, rural change agents agreed that computer is very valuable for their job and that they should learn high computer technology. 5. Concludly, various contents of computer education/training program should be prepared for rural change agents and they should take full advantage of computer facilities.

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2002.12a
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• pp.5-8
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• 2002

In this paper, we introduce a simple new method on calculating the entropy of the image fuzzy set gotten by the extension principle without calculating its membership function.