• Journal of the Korean Society of Industry Convergence
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• v.7 no.4
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• pp.325-330
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• 2004

The forces acting on the tool are an important aspect of maching. For those concerned with the manufacture of machine tools, a knowledge of the forces in needed for estimation of power reguirements and for the design of machine tool elements tool-holders and fixtures, adequately rigid and free from vibration. The force reguired to form the chip is dependent on the shear yield strength of the work material un der cutting conditions which are cutting speed, workpiece, feedrate, insert type. In this study, FG, ML, MP, MC, C, RT inserts were investigated in turning using SM45C, SCM4, SKD11, SUS316, materials. The diameter of materials was 60mm, 80mm, 110mm. This paper presents MP were lowest and SKD11 were largest of the workpiece in cutting forces.

• The Journal of Sustainable Design and Educational Environment Research
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• v.5 no.1
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• pp.22-39
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• 2006

The purpose of this study is an overall valuation about propriety study of school facilities BTL(Build-Transfer-Lease) by means of AHP(Analytic Hierarchy Process). The search point includes these questions. Is BTL of school facilities a reasonable project for school, or is the former government financial project on the position of comparative superiority? And, is a partial BTL possible as an alternative plan? The result of this study shows that preference rate about BTL is 39%, that of former government financial project is 32%, and that of partial BTL is 29%.

• 제어로봇시스템학회:학술대회논문집
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• 2003.10a
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• pp.1521-1524
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• 2003

In this paper, we propose a "Distance Correlation Selection operator (DCS)" as a new selection operator. For Genetic Algorithm (GA), many improvements have been proposed. The MGG (Minimal Generation Gap) model proposed by Satoh et.al. shows good performance. The MGG model has all advantages of conventional models and the ability of avoiding the premature convergence and suppressing the evolutionary stagnation. The proposed method is an extension of selection operator in the original MGG model. Generally, GA has two types of selection operators, one is "selection for reproduction", and the other is "selection for survival"; the former is for crossover and the latter is the individuals which survive to the next generation. The proposed method is an extension of the former. The proposed method utilizes distance information between individuals. From this extension, the proposed method aims to expand a search area and improve ability to search solution. The performance of the proposed method is examined with several standard test functions. The experimental results show good performance better than the original MGG model.

• Korean Journal of Child Studies
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• v.28 no.3
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• pp.235-250
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• 2007

Using content analysis this study examined Korean people's traditional view on children with disabilities, hoping to contribute to the selection of appropriate picture books for an understanding of disabilities in kindergartens and child care centers. Story book characters with disabilities mainly interacted with their families and village people, had lower positions, did not accomplish their work on their own, and suffered from others' anger and beating. Differences in types of disabilities were that physical disabilities were viewed positively, while mental disabilities were viewed negatively. The former had wider scope of activities and maintained more positive relationships with other characters than the latter; furthermore, the former had higher position than the latter and had cooperative interactions with people without disabilities.

• Journal of the Korean Institute of Landscape Architecture
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• v.15 no.2
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• pp.115-137
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• 1987

The townscapes of “Bu” and “Mok” in the Yi Dynasty, Showing the typical landscape characteristics of Korean pre-industrial city, were influenced by the two major socio - cultural norms, One of Which is the “Pung - su theory” a traditional religious system on human settlements, the other is the “Churyegogong system” ; a principle of the traditional oriental city planning. The former exerted main influencs on the location of towns, its external Boundaries of domain and its direction, by natural topographic features in macro perspective, and the latter on the inner parts of townscapes, i. e., the landscape system of ‘center’, ‘boundary’, ‘direction’, and ‘domain’, as representations of administrative and Socio-cultural structures of that era, in micro perspective compared with the former. The systems of Korean old townscapes can be summurized as followhg brief paradigm, with general and .case studies. And the constituents of the paradigm, such as center, boundary, direction and domain, are inferred to reinforce the “sense of place” in townscapes, with their ‘physical appearence’, ‘meaning’, and ‘social activities’.

• Proceedings of the KSPS conference
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• 1996.02a
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• pp.179-182
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• 1996

This thesis compares the duration aspect of Daegu tongue with that of standard Korean. In the former study on the rhythm of standard Korean, one of the purposes of the study was to compare it with dialects. This thesis is the first attempt In do that. For this purpose, this thesis proceeds as follows. After Introduction, Chapter 2 surveys the former study, Chapter 3 deals with the materials, method and results of the experiment. Chapter 4 analyzes and interprets the results of the experiment. In Conclusion, the most prominent fact is that the results of the experiment fall short of Daegu tongue speakers' expectations. Daegu tongue is generally considered as ' tone language. ' And as Daegu tongue speakers sensitively recognize pitch, they think that they quitckly say the syllables between the pitch stressed syllables, whereas standard Korean speakers say those syllables relatively slowly. But in this experiment, which deals with only duration ignoring pitch, their assumption is proved to be false.

• Convergence Security Journal
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• v.13 no.5
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• pp.37-43
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• 2013

Retired Military Personnel do not cause an increase in the employment rate of the overall society in the aftermath of the global economic crisis contributed to instability of employment was for many years the future employment of Retired will have an impact on the environment. Over the last 20 years working to improve Retired Military Personnel employment despite these results, it appears a former education support and related support policies deemed necessary and complementary Thus, the former domestic and foreign support education and development direction of the realities in the present investigation.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.27 no.2
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• pp.259-264
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• 2003

One Clausius inequality based on an apparatus with a single thermal reservoir is reviewed. Some intricate issues regarding the apparatus are brought up and therefore a preferred way to interpret the Kelvin-Planck statement is suggested. Then it is shown that another Clausius inequality can be established from a direct application of the proposition regarding the efficiency of a Carnot cycle. The establishment is based on an apparatus with two reservoirs, and the resultant inequality involves the temperature of external reservoir. Finally, a different apparatus which also has two thermal reservoirs is utilized to compare the cyclic integral of the former inequality with the one of the latter resulting in the proof of the former inequality which involves the temperature at the system boundary. The applications and limitations of these two Clausius inequalities are discussed.

• Journal of Photoscience
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• v.6 no.1
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• pp.7-12
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• 1999

Irradiation of 1 , 4-diphenylbut-1-en-3-yne 1 and some p-quinones in dichloromethane with 300nm UV light yield tow types of adducts, i.e., p-quinomethanes and cyclobutanes, in which the former were produced via the rearrangement of the intially formed spiro-oxetene intermediates. On the other hadn 1 added to o-quinones to give three types of adducts, i.e., 1, 3-dienes, 1, 4-dioxenes, or spiro-oxetanes, in which the former were found to be applied to synthesize phenanthrene derivatives. A methoxy derivative of enyne 39 was synthesized to investigate the type of thephotoaddition to o-quinones, in which 1, 4-dioxenes were obatained.

• Proceedings of the Korean Nuclear Society Conference
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• 1996.05b
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• pp.467-472
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• 1996

This study discusses special aspects of severe accident related recriticality modeling and analysis in the Advanced Neutron Source (ANS) reactor.$^{1, 2)}$ The analytical comparison of three elements core to former two elements case is conducted including evaluation of suitable nuclear cross-section sets to account for the effects of system configulation, fuel and moderator mixture temperature, material dispersion and the other thermal-hydraulics. Three elements core ANS reactor is the alternative core design which was proposed as a modified core design, with three fuel elements instead of two, that would allow operation with only 50% enriched uranium (former uranium fuel is the baseline design value of 93%) A comprehensive test matrix of calculations to evaluate the threat of a criticality event in the ANS is described. Strong dependencies still on geometry, material constituents, and thermal-hydraulic conditions are verified. Therefore, the concepts of mitigative design features are qualified.d.