• The Journal of Asian Finance, Economics and Business
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• 제7권5호
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• pp.73-80
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• 2020

Tax is the main revenue of Government, so fighting tax evasion and sustainable growth have been the primary macroeconomic goals being pursued by every developing country, Vietnam included. The existence and development of the shadow economic sector are synonymous with the national budget losing out. In Vietnam, foreign direct investment projects do not promote economic growth and is also a sector that gives way to tax evasion.The purpose of this study is to investigate the impact of foreign direct investment, the quality of the informal institution on the size of the shadow economy in Vietnam, during the period 1991-2015. By applying the Autoregressive Distributed Lag approach and Toda and Yamamoto test, we found evidence to conclude that the quality of the informal institution harms the size of the shadow economy. The results of the causality test show that there is a unidirectional causality running from the shadow economy and the quality of the informal institution to foreign direct investment attraction in Vietnam. Political solutions need to be implemented carefully to counter the harmful effects of the shadow economy. Policymakers should adopt several economic policies to improve the 'human capital' and drive the shadow economy into the formal economy.

• 한국국방경영분석학회지
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• 제35권1호
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• pp.21-32
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• 2009

In this study, the author uses a MATLAB simulation to develop and test a generalization of the traditional Random Search model which allows both the searcher and target to move and to be in different, but overlapping, areas. Also the best evasion speed for a randomly moving target against a Systematic Search is studied.

• 가정과삶의질연구
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• 제8권1호
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• pp.49-67
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• 1990

The purpose of this study is to investigate the relations between marital status incompatibility and the ways of dealing with marital conflict. Research was conducted by interview using questionnaire on 177 employed wives. Statistics used for data analysis were frequency distribution, percentage, t-test, chi-square test. 1) In resolving marital conflict four types of method are appeared, namely constructive method, passive method, evasion and physical violence. 2) Only physical violence of husband-to-wife of the four methods is related to status in-compatibility. That is the incidence rate of physical violence of husband-to-wife in incompatible couples is higher than that of compatible couples in conflict situations. 3) In case the wife's occupational status is high relative to her husband the incidence rate of physical violence of husband-to-wife is extremely high, but is significantly low in couples which are compatible in this status. 4) In case wife's status advance ent is controlled, there is significant relationship between status incompatibility and the method of conflict resolution by husband whose wife is status striver.

• 동의신경정신과학회지
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• 제19권3호
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• pp.23-34
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• 2008

Objective: The purpose of this study was to investigate characteristics of the defense mechanism of oriental medicine students by using Ewha Defense Mechanism Test(EDMT) preliminarily. Method: We described the characteristics of the defense mechanism of oriental medicine students and compared the scores of EDMT with standard group. We analysed the differences of defense mechanism by sex (male, female) and age($\leq$29 and $\geq$30 yrs old) within oriental medicine students. The score of EDMT were verified by examination of one sample t-test and unpaired t-test. Results and Conclusions: First, there was no Major Defense Mechanism in oriental medicine students. Second, oriental medicine students had more defensive, passive inclination and used Evasion and Show-off more frequently. Third, the differences within oriental medicine students depended on age rather than sex. The younger students used immature and neurotic defense mechanisms more frequently, and the older students had more defensive and passive inclination.

• 디지털산업정보학회논문지
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• 제14권1호
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• pp.121-133
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• 2018

The goal of this study is to investigate the factors affecting firefighter's traumatic experiences and to examine and compare the differences of how those factors contribute to firefighter's burnout, depression, anxiety and social relationships. This study suggests that it is imperative for firefighters to have mindfulness, which brings mental and emotional healing, for their job-satisfaction. To empirically examine the research model of this study, the questionnaire survey was carried out to firefighters in InCheon Metropolitan City for two weeks; from October 19thto November 3rd, 2017. Out of 180 questionnaires, 170were retrieved. Total number of 160 questionnaires are empirically examined this study, excluding10bad survey responses. The t-test was conducted to determine whether there exist differences by gender among traumatic experienced firefighters, and a meaningful difference was found from perceived intrusiveness, a sub factor to traumatic experiences. Male firefighters showed higher mean than that of female firefighters in perceived angle, evasion and intrusiveness. Second, the t-test was conducted to determine whether there exist differences by gender in firefighter's burnout, but no meaningful differences were found. Female firefighters showed higher mean in emotional exhaustion, impersonalization and in decrease in self-achievements. Third, the t-test was conducted to determine whether there exist differences by gender in firefighter's depression and relationships, but no meaningful differences were found.

• 대한안전경영과학회지
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• 제6권4호
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• pp.171-181
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• 2004

A multi axis whetstone polishing system, which uses the flow system of the stone polishing machine head, has been developed. The test results show that the defect by line contact polishing does not occur in both ends of the stone and that it came to trim smoothly. In terms of the surface roughness, the corresponding index was decreased by 3.6 times, improving the polishing effect greatly. It decreased significantly the dust and noise with the wet polishing. The factors of the duty evasion at production site can thus be solved with the work environment improvement against the polishing process of the stone industry and work intensive reduction.

• 한국소음진동공학회논문집
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• 제18권8호
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• pp.816-822
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• 2008

This study presents the design modification for SCR muffler of a commercial vehicle. Its main objective is the reduction of radiated noise at SCR muffler. For this study, the research of five steps were achieved by experimental and CAE analysis. First step is the measurement of radiated noise using impact-acoustic test. Second step is the source identification using experimental modal analysis. The cause of radiated noise source is confirmed by the resonance of end plates at SCR muffler. Third step confirms the possibility of resonance avoidance using SDM analysis applied the mass control. Fourth step is the suggestion of design modification which is the change of mode shape by CAE analysis. Last step is the verification of design modification using SYSNOISE analysis. Finally, the prototype product applied the countermeasure of resonance evasion was manufactured and the reduction of radiated noise at SCR muffler was confirmed by pass-by noise test.

• 한국치위생학회지
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• 제13권1호
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• pp.98-104
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• 2013

Objectives : The purpose of this study was to measure the fear of dental care and analyze the related factors between reliability for members in dental office and fear of dental care, dental office. Methods : Located in Gwangju, 260 college women who had dental experience in the past year were surveyed. SPSS windows ver. 11.0 by demographic characteristics and oral health characteristics of the frequency and percentage, and related factors in the fear of dental care and the reliability about dental health care workers of one way ANOVA, Tukey test for Post-Hoc test. and were factors associated with dental fear of the stepwise multiple regression analysis was performed. Results : The fear will be higher when subjective oral health status is considered lower, the reliability of dental health care workers is lower(p<0.05). Evasion and overall fear, overall fear and stimulations of dental care, stimulations of dental care and overall feeling were related(p<0.05). Conclusions : The reliability of dental health care workers is lower and subjective oral health status is considered lower, the fear of dental care increase and everage number of brushing has increased, the fear of dental care decrease.

• 임산에너지
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• 제20권2호
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• pp.9-19
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• 2001

본 연구는 식품포장용 골판지에 사용되는 유기합성 구충제를 대체할 수 있는 천연 구충물질을 탐색하기 위하여 수목의 잎이나 수피 또는 목질부에서 화학성분을 추출하고 그 추출물에 대하여 화락곡나방 유충을 이용한 기피시험을 수행하였다. 아까시나무 목질부와 현사시나무, 수양버들 및 버드나무 수피, 그리고 주목과 비자나무의 잎을 채취하여 아세톤-물(7:3)의 흔합액으로 추출하고 hexane, CH₂Cl₂ ethylacetate(EtOAc)와 물로 분획하여 동결 건조한 후 Sephadex LH-20 칼럼에서 크로마토그래피를 수행하였으며 단리된 물질들은 NMR 및 MS 분석에 의하여 그 구조를 결정하였다. 각 수종의 EtOAc 또는 수용성 분획은 2% 또는 3% 농도로 인쇄용 잉크에 흔합되어 상업용 골판지에 인쇄하고 이를 기피시험을 위한 재료로 사용하였다. 아까시나무 EtOAc용성 분획에서는 robtin과 dihydrorobinetin이, 수용성 분획에서는 leucorobinetinidin이 단리되었으며 현 사시나무 수피의 EtOAc용성 분획은 (+)-catechin, naringenin, aromadendrin, eriodictyol, sakuranetin 및 그 배당체, taxifolin, neosaturanin, p-coumaric acid 및 salireposide 그리고 수용성 분획에서는 aesculin을 단리하였다. 버드나무 수피의 EtOAc용성 분획에서는 다량의 (+)-catechin 이외에 (+)-gallocatechin 및 p-coumaric acid가 분리되었으며 수양버들 수피의 EtOAc용성 분획에서도 (+)-catechin, (+)-gallocatechin, dihydromyricetin 및 myricetin등이 단리되었다.

• 동력기계공학회지
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• 제22권6호
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• pp.67-73
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• 2018

Gasoline that meets the quality standards is distributed in Korea. However, consumers who use toluene or solvent mixed with gasoline have appeared due to rising crude oil prices and for the purpose of tax evasion. Gasoline quality standard is enacted by the domestic and international research reference. A wrong fuel can influence automobile performance or environmental issue. Thus, empirical data from this issue is necessary. Therefore, this research observed catalyst influence by gasoline property change and inspect influence of environment. In this study, fuel property evaluation, lean-burn evaluation, and real vehicle exhaust emission test were performed. In the result of fuel property, the fuel "A" was measured to be up to 27% less octane than the normal gasoline and the distillation property was measured 24% higher than normal gasoline. In the test result of single cylinder engine lean-burn test, the fuels "A" and "B" show torque value 20% less than the normal gasoline. As a result of vehicle test using the catalyst, the fuel "A" was increased more than the normal gasoline with 83% THC, 1,806% CO and 128% NOx, and the fuel "B" was increased more than normal gasoline with 1.6% THC, 391% CO and 142% NOx.