• Journal of the Korean Home Economics Association
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• v.45 no.2
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• pp.119-131
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• 2007

The purposes of this study were to find the general trends for the psychological well-being of Korean-Chinese Married Women(KCMW), to examine the differences according to related variables, and analyze the effective variables influencing their psychological well-being. The subjects were 337 KCMW over 20 years old living in China. The subjects completed a questionnaire and the data were analyzed using SPSS. The average scores of life satisfaction were higher and depression were lower than the median. Therefore the psychological well-being level of KCMW was higher than that of the median. The psychological well-being level of KCMW showed significant differences according to age, pattern of family and living condition. The life satisfaction of KCMW was influenced by living condition, family value orientations, ethnic identity, and the satisfaction of family relationship. The depression of KCMW was influenced by age, self-esteem, sex-role attitude, and the satisfaction of family relationship.

• Special Issue of the Society of Naval Architects of Korea
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• 2005.06a
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• pp.138-143
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• 2005

Recently, it is much more required to approach the accurate shaft alignment analysis according to the tendency of active showing in large container vessel and that of the heavy weight of propeller in connection with it. Shaft alignment calculation lies upon how the pressure apply on bearings properly in operation of main engine and how the stress of shaft puts within that of limit of bearing material and how the movement of shaft is prospected owing to propeller forces and moments. Therefore, we have conducted the shaft alignment calculation of very large container vessel considering the deformation of hull structure and the propeller forces and moments and the static and dynamic condition of shaft. The calculation results show the pressure distribution of aft bush and the movement of shaft in bearing. The shaft alignment calculation helps the stable application of shaft alignment, which was proved in sea trial.

• Korean Journal of Human Ecology
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• v.1 no.1
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• pp.27-43
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• 1998

The purposes of this study were to find the general trends of marriage-ideology reflected on the view of marriage of unmarried men and women, to estimate the differences according to related variables and to investigate relation of variables and marriage-ideology. The samples were selected from the unmarried 164 men and 235 women living in Kwang-ju. The major findings were as follows; 1. Unmarried men and women didn't reveal high level of marriage-ideology but men's marriage-ideology scores were higher than women. The overall tendencies were that women's achievement of vicarious status was more imporant than that of personal status, marriage was the male-leading union and men's conditions of mate-selection must be superior than woman. Unmarried men and women usually did not accept equality between sex and they have strong gender-stereotype. In the view of sexuality, premarital viriginity and extramarital intercourse were more rigid with woman and they took a serious view of man-centered kinship. 2. Marriage-ideology were significantly different according to mother's age, necessity of marriage, motive of marriage, marriage taboo according to family origin, the eldest son's parent care-giving, a notion of preferring a son. 3. Men and women's marriage-ideology was positively related to variables. Especially, women's marriage-ideology had high relation to motive of marriage and a notion of preferring a son. But women's marriage-ideology was negatively related to educational level. (Korean J Human Ecology 1(1) : 27∼43, 1998)

• Journal of the Society of Naval Architects of Korea
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• v.44 no.3 s.153
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• pp.258-266
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• 2007

CFD calculations are performed for KRISO 3600TEU container ship(KCS) models with different Reynolds numbers. Numerical calculations of the turbulent flows with the free surface around KCS have been carried out at $Re=0.791{\times}106\;and\;Re=1.4{\times}107$ using a standard Fluent package. In both cases, Froude number is fixed with 0.26 and wave elevation is simulated by using the VOF method. The calculated results at $Re=1.4{\times}107\;and\;Re=0.791{\times}106$ are compared with the experiment data of KRISO towing tank test and RIMS CWC test, respectively. Boundary layer thickness and wake field shows Reynolds number differences. There are some changes in wave pattern behind transom stern.

• Journal of the Society of Naval Architects of Korea
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• v.33 no.1
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• pp.9-18
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• 1996

This paper describes a potential-based panel method for the prediction of unsteady performance of a marine propeller operating in a non-uniform flow field. Boundary-value problem, formulated by distributing the normal dipoles and sources on the blade, the hub and the shed wake, is descretized and numerically analyzed in a discretized time domain. Through an extensive test and comparison with the analytic solution, the convergence in time step is verified for a two-dimensional foil. Unsteaty analysis is then carried out for the DTRC 4118 propeller operating in a harmonic wake, and compared favorably with the experimental result. The present method is shown applicable to the analysis of unsteady performance of the propellers.

• YAKHAK HOEJI
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• v.37 no.2
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• pp.163-171
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• 1993

In order to study the functions of vascular endothelial nitric oxide(NO) generating system, we examined the effects of monomethylarginine(MMA) and dimethylarginine(DMA)(asym., sym.), arginine analogues, on modulation of vascular tone. Also, the concentrations of endogenous arginie and MMA were measured by HPLC in rat aortic tissues. The results were as follows. 1. The maximum relaxation induced by Ach (1.5$\times$10$^{-6}$M) was 80% of the contractility of rings of rat aorta induced by phenylephrine and L-Arg causes endothelium-dependent relaxation of the aorta precontracted with phenylephrine and these relaxation were concentration-dependent. 2. Endothelium-dependent contractility of rings of rat aorta induced by MMA (100 $\mu{M}$), DMA (asym., 100 $\mu{M}$) and DMA (sym., 100 $\mu{M}$) were 25.5%, 27.5% and 16.5% of that induced by phenylephrine respectively. 3. The relaxation of rat aortic ring induced by L-Arg was inhibited by MMA, DMA(asym.) and DMA(sym.). The degrees of inhibition induced by MMA, DMA(asym.) and DMA(sym.) were 45.7%, 37.1% and 18.3%, respectively. 4. The endogenous arginine and monomethylarginine contents in rat aorta were 83 pmoles/mg wet tissue, and 34.9 pmoles/mg wet tissue. After stimulation with Ach, the concentrations of L-Arg and MMA were significantly decreased. These results suggest that there are the strong relationships between the endogenous L-Arg and methylated arginines and NO-generating system.

• Journal of Technologic Dentistry
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• v.33 no.1
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• pp.47-54
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• 2011

Purpose: To investigate shear bonding strength between dental zirconia ceramics with different surface treatment and metal bracket. Methods: Zirconia ceramics(LAVA, 3M ESPE, USA) were divided to 4 groups according to their surface treatment; no surface treatment(G1), sand blasting(G2), silane coating(G3), and sand blasting+silane coating(G4). Specimens were bonded to metal bracket using resin bond($Transbond^{TM}XT$, 3M Unitek, USA). Shear bond strength was measured using universal test machine(3366 INSTRON. U.S.A) with cross head speed of 1 mm/min. Microstructural investigation for fracture surface was performed after shear test. Results: Shear bonding strengths of single surface treatment groups (G2 and G3) were higher than no treatment group(G1). Combined Treatment Group (G4) showed the highest shear bond strength of 9.15MPa. Microstructural observation shows that higher shear bonding strength was obtained when debonding was occurred at metal bracket/resin interface rather than zirconia ceramic/resin interface. Conclusion: Surface treatment of zirconia is necessary to obtain higher bonding strength. Combined treatment can be more effective when surface the surfaces are kept clean and homogeneous.

• YAKHAK HOEJI
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• v.56 no.4
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• pp.260-267
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• 2012

This study examined the effects of baicalin, a bioactive flavonoid isolated from Scutellaria baicalensis, on hepatic injury caused by ischemia/reperfusion (I/R) in alcoholic fatty liver. Rats were fed an ethanol liquid diet or a control isocaloric diet for 5 weeks, and then subjected to 60 min of hepatic ischemia and 5 h of reperfusion. Baicalin (200 mg/kg) was administered intraperitoneally 24 and 1 h before ischemia. After reperfusion, baicalin attenuated the increase in serum alanine aminotransferase activity. The levels of cytosolic cytochrome c protein expression, caspase-3 activity, the number of apoptotic cells increased after reperfusion, which were higher in ethanol-fed animals, were attenuated by baicalin. Following I/R, the hepatic lipid peroxidation was elevated, whereas hepatic glutathione content was decreased. These changes attenuated by baicalin. In ethanol-fed animals, baicalin augmented the increases in heme oxygenase-1 protein and mRNA expressions, and nuclear Nrf2 expression. In conclusion, our findings suggest that baicalin ameliorates I/R-induced hepatocellular damage by suppressing apoptosis and oxidative stress in alcoholic fatty liver.

• Journal of the Society of Naval Architects of Korea
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• v.55 no.5
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• pp.431-437
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• 2018

The running attitude of a planing hull is determined by the pressure distribution on the hull bottom, and it significantly affects hydrodynamic performance of the ship, i.e., resistance, maneuverability, and seakeeping ability. Therefore, it is essential to investigate pressure distribution on the hull bottom in order to improve hull design. In the present study, a novel pressure measurement system using tactile sensors was introduced for a planing hull. The test model was a 23 m-class planing hull with a hard chine. The pressure measurement showed that the pressure at the transom was lower than the atmospheric pressure, owing to flow separation at the transom.

• Journal of the Korean Home Economics Association
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• v.41 no.1
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• pp.139-153
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• 2003

The purposes of this study were to find the general trends of aged couples' marital conflict, life satisfaction, and to examine relationships between husbands' marital conflict, life satisfaction and those of wives, and to investigate effective variables influencing on their life satisfaction. The subjects were the 218 couples over 60 years old living in Gwangju. Trained researchers interviewed the subjects with structured questionnaires. Data were analyzed with mean, sd, Cronbach' α, paired-t test, Pearson's correlation and Hierarchical Regression using SAS program. The major findings were as follows; 1. The marital conflict scores of husbands and wives were lower than median and wives' marital conflict scores were higher than those of husbands. The average scores of life satisfaction were higher than median and Husbands achieved higher scores in life satisfaction than wives. 2. Husbands' marital conflict and life satisfaction were positively related to those of wives. 3. Husbands' life satisfaction was influenced by health, self-esteem, filial support, acquaintances' support, marital conflict. Wives' life satisfaction was influenced by income, health, marital intimacy, filial support, acquaintances' support, marital conflict. Spouses marital conflict was significantly effective variable to wives' life satisfaction, but no significant to husbands'.