• Journal of Advanced Marine Engineering and Technology
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• v.31 no.6
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• pp.744-752
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• 2007

Recently a fuel oil of the diesel engine in the ship is being changed with low quality as the oil price is higher more and more. Therefore the wear and corrosion in all parts of the engine like cylinder liner ring groove of piston crown, spindle and seat ring of exhaust valve are increased with using of heavy oil of low quality In particular the degree of wear and corrosion in between valve spindle and seat ring are more serious compared to the other parts of the engine due to operating in severe environment such as the high temperature of exhaust gas and repeating impact. Thus the repair weld to the valve spindle and seat ring is a unique method to prolong the life of the exhaust valve in an economical point of view In this study. corrosion property of both weld metal zone and base metal was investigated with some electrochemical methods such as measurement of corrosion potential, cathodic and anodic polarization curves, cyclic voltammogram and polarization resistance etc. in 5% $H_2SO_4$ solution. in the case of being welded with some welding methods and welding materials to the exhaust valve specimen as the base metal. In all cases. the values of hardness of the weld metal zone were more high than that of the base metal. And their corrosion resistance were also superior to the base metal. The weld metal of A2F(AC SMAW: 2 pass welding with foreign electrode) showed a relatively good results to the corrosion resistance as well as the hardness compared to the ether welding methods and welding materials. Moreover it indicated that hardness of the weld metal by the domestic electrode was considerably high compared to that of the foreign electrode.

• Journal of the Korean Society of Clothing and Textiles
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• v.34 no.7
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• pp.1184-1196
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• 2010

Several applications of body scanning technology have been commercialized or are currently under development. The virtual fit from 3D scans is most advanced form of virtual try-on. This article is an analysis of the comparison of user preferences for domestic versus foreign 3D virtual try-on systems. For this study, domestic i-Fashion Mall (www.ifashionmall.co.kr) and a Canadian company, My Virtual Model (www.mvm.com) were selected as the most representative online retailers that offer a virtual try-on system. The respondents were comprised of 70 Korean female college students in the age group 20-29. A five point Likert scale was used to evaluate the degree of the preference of virtual avatar and try-on images. T-test, cross table, and a chi-square independence test were conducted for data analysis. The results are as follow. 1. The representation about current looks according to each virtual fit image indicates that MVM is more accurate than i-Fashion Mall. 2. About decision confidence, respondents have decision confidence in i-Fashion Mall in the case of the avatar image; however, respondents have confidence in MVM or the fit image. 3. There were no significant differences in among waist size groups in accuracy, trust of each avatar image, while there were significant differences among waist size groups in the accuracy and trust of each virtual fit image. 4. About ease of use, respondents answered that i-Fashion Mall is superior to MVM. 5. The respondents prioritized the ‘fitting report’ of i-Fashion Mall and ‘Weight loss’ of MVM over other functionalities.

• Journal of the Institute of Electronics Engineers of Korea SD
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• v.37 no.1
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• pp.83-91
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• 2000

This paper presents a new technique to reduce a large interconnect circuit with tens of thousands of elements into the one that is small enough to be analyzed by circuit simulators such as SPICE. This technique takes a fundamentally different approach form the conventional methods based on the interconnect circuit structure analysis and several rules based on the Elmore time constant. The time moments are computed form the circuit consisting of the interconnect circuit and the CMOS gate driver model computed by the AWE technique. Then, the equivalent RC circuit is synthesized from those moments. The characteristics of the driving CMOS gate can be reflected with the high degree of accuracy and the size of the compressed circuit is determined by the number of output nodes regardless of the size of the original interconnect circuits. This technique has been implemented in C language, applied to several interconnect circuits driven by a 0.5${\mu}m$ CMOS gate and the equivalent RC circuits with more than 99% reduction ratio and accuracy with 1 ~ 10% error in therms of propagation delays were obtained.

• Journal of Microbiology and Biotechnology
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• v.14 no.2
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• pp.430-434
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• 2004

Three extracellular protease-deficient Bacillus subtilis strains were transformed with the plasmid pCK98 containing the endo-$\beta$-1,4-glucanase (Eng) gene of B. subtilis BSE616. The three transformants, B. subtilis DB104 (pCK98), WB600 (pCK98) and WB700 (pCK98), produced the same high level of enzyme activity and showed similar patterns of cell growth and enzyme production. When B. subtilis DB 104 (pCK98), a two-extracellular protease deficient strain, was cultured for 22 h, almost all the secreted enzyme was found to be in the completely cleaved form by both activity staining and Western blotting studies. B. subtilis WB600 (pCK98), a six-extracellular protease-deficient strain, produced a partially cleaved form in addition to the intact form of the enzyme, although the degree of internal cleavage of the enzyme was greatly reduced. With B. subtilis WB700 (pCK98), a seven-extracellular protease-deficient strain, almost all the enzyme was produced as the intact uncleaved form. This study illustrates that a role of the V pr protease is to degrade foreign proteins produced in B. subtilis and WB700 is a suitable expression system for producing the intact form of the Eng and other foreign proteins that may lose at least part of their efficacy due to internal proteolytic cleavage.

• Archives of Plastic Surgery
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• v.38 no.2
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• pp.166-172
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• 2011

Purpose: Facial contouring surgery for improving congenital, acquired deformity and senile change were attempt in past. Recently contouring surgery became more interested subject for improving the flat forehead and temple area. Many synthetic materials were used such as Collagen, silicon, polyacrylamide gel as liquid form and Gore-tex, silicon implant, endotine as solid form. But, these synthetic implants associate complications as foreign body reaction, infection, displacement, granuloma formation and absorption. Auto-fat injection are used for disfigurement of many part of body. We did auto-fat injection for facial contouring of forehead and temple region. Auto-fat injection is suitable without foreign body reaction, displacement, and toxic reaction. Also auto-fat is relatively simple to obtain from patient and less expensive and able to repeat surgeries. Methods: From 2006 to 2009, 150 patients were treated with Auto-fat injection for facial contouring. For follow up, we sent questionnaire to all patients but 110 patients returned answer sheets. The patients consisted of 20 male patients and 90 female patients with an age ranged from 26 to 60, and the mean 43. Fat tissue were injected 6-8 cc in forehead, 7-12 cc in temple area and fat were harvested from thigh and abdomen. Results: In follow up, all patients, showed absorption of injected fat varied degree and except two patients all patients underwent secondary fat injection. Complications were minimal and neuropraxia of facial nerve were recovered. Most of the patients were satisfied with result of procedure, and answered that they recommend same procedure to their friends and will do surgery again. Conclusion: Auto-fat injections were implemented for facial contouring in 150 patients and obtained satisfactory result. Auto-fat injection is relatively easy procedure and applicable widely. Even though, by passing time, some of the injected fats are absorbed, auto-fat injection could be choice of treatment for contouring forehead and temple. With accumulations of cases and development of surgical technique, better result could be expected.

• Spatial Information Research
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• v.16 no.1
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• pp.101-112
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• 2008

This study aims to show why we have to introduce SOA paradigm in the Cadastral Information System for coping with domestic and foreign IT environments flexibly and strengthening inner capability. We search the trend of up-to-date IT paradigm such as Enterprise GIS, SOA and etc. from this, we worked out the concept of Cadastral Information System. we also could see the introduction case of the domestic and foreign next generation Cadastral Information System, there is implications for us. also, we analysis the general condition about information system which KCSC(Korea Cadastral Survey Corporation) own in a general way and estimate the SOA level degree for each information system. and on that base, we set up SOA loadmap for implementation the next generation of Cadastral Information Service. This is an important step for building ideal future information systems which KCSC hope to be. For realizing this, we focus our inner capability on integration without duplicate and re-using the inner information infra.

• Journal of the Korea Society for Simulation
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• v.21 no.1
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• pp.19-26
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• 2012

In this paper, we study the relationship between FDI(Foreign Direct Investment) and economic growth in Kazakhstan. For this research, we, first, investigate the factors that affect FDI infow to Kazakhstan since its independence and determine the degree of their influence. Second, we study the impact of FDI per capita on GDP per capita. To achieve these goals, an empirical study is conducted with 18 years data from 1992 to 2009 from World Bank Database. Data are analyzed using multiple linear regression, time series analysis and Granger causality test. The results show that the determinant of FDI is GDP and economic freedom index in Kazakhstan. Economic growth is affected by FDI, too. Specially, FDI is positively related to GDP and economic freedom index. FDI per capita's impact on GDP per capita is 30.4 dollars increase in GDP per capita by one dollar increase in FDI per capital inflow. The results provides useful information for policy makers to improve obtaining large amount of investments and facilitate economic growth.

• Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology
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• v.9 no.3
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• pp.241-250
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• 2019

The study aims to investigate how international students with over the TOPIK level 3 recognize Korean proverbs. Among the 53 students, 45 students had the qualification of the TOPIK levels. Research results are as follows: 80.0 percentages of those students have studied Korean languages in the language institutes in Korea or their homelands. Only 57.8 percentages of them have learned Korean proverbs. Despite the high interest of foreign students on Korean proverbs, education on their expectations has not been achieved. And they had difficulty recognizing the circumstantial expression of the Korean proverb. Their degree of understanding of Korean proverbs is lower, compared to their TOPIK levels. The absence of systemic education on Korean proverbs makes international students difficult to understand the figurative expression of Korean proverbs. Since many international students want to become Korean language teachers after their studying, the education of proverbs needs to be conducted systematically rather than individually.

• International Area Studies Review
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• v.12 no.3
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• pp.49-67
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• 2008

In this paper, we address the problem of optimal monetary policy rule in the presence of abrupt shifts in the structure of the economy. To do so, we first estimate a Markov switching model for the US housing price inflation, and find evidence supporting the presence of two distinct regimes for the US housing price inflation. One of the two regimes identified appears 'usual', in that housing price inflation negatively responds to higher real interest rate. The other regime is 'unusual', in that the housing price inflation is positively related with real interest rate. We then solve an optimal control problem of the FRB under the presence of the two regimes thus identified. The optimal policy is 'asymmetric' in that the optimal responses in the 'usual' regime require the FRB to lean against the wind to inflationary pressure, while the FRB is recommended to accommodate it in the unusual regime. It is also found that the optimal degree of responses is more conservative when the FRB acknowledges the uncertainty about future regime.

• Journal of Digital Convergence
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• v.17 no.9
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• pp.327-335
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• 2019

In the 1970s, Korea actively produced so many animated works which is called the "golden age" of korean animation. However, Korea imported and subcontracted foreign animations than creating original works and, there has been a constant controversy that many of the korean animations imitated foreign works. Therefore, this paper aims to analyze the factors that caused this and its patterns, focusing on works suspected of plagiarism in Korean animation during the 1970s and 1980s. First, the focus will be on the definition and composition of plagiarism in art creation, secondly, on the political-ideological, industrial-administrational, production-structural, and copyright awareness aspects of the factors of plagiarized animation. Thirdly, 30 korean animations produced at the time will be analyzed on the degree of design theft and plagiarism based on six criteria focusing on characters' shapes and color arrangements. By analyzing the social factors and patterns of plagiarism, this study aims to provide a social and cultural understanding of academic value about the process of korean animation's development.