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Empirical Analysis on the Relationship between R&D Inputs and Performance Using Successive Binary Logistic Regression Models (연속적 이항 로지스틱 회귀모형을 이용한 R&D 투입 및 성과 관계에 대한 실증분석)

  • Park, Sungmin
    • Journal of Korean Institute of Industrial Engineers
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    • v.40 no.3
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    • pp.342-357
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    • 2014
  • The present study analyzes the relationship between research and development (R&D) inputs and performance of a national technology innovation R&D program using successive binary Logistic regression models based on a typical R&D logic model. In particular, this study focuses on to answer the following three main questions; (1) "To what extent, do the R&D inputs have an effect on the performance creation?"; (2) "Is an obvious relationship verified between the immediate predecessor and its successor performance?"; and (3) "Is there a difference in the performance creation between R&D government subsidy recipient types and between R&D collaboration types?" Methodologically, binary Logistic regression models are established successively considering the "Success-Failure" binary data characteristic regarding the performance creation. An empirical analysis is presented analyzing the sample n = 2,178 R&D projects completed. This study's major findings are as follows. First, the R&D inputs have a statistically significant relationship only with the short-term, technical output, "Patent Registration." Second, strong dependencies are identified between the immediate predecessor and its successor performance. Third, the success probability of the performance creation is statistically significantly different between the R&D types aforementioned. Specifically, compared with "Large Company", "Small and Medium-Sized Enterprise (SMS)" shows a greater success probability of "Sales" and "New Employment." Meanwhile, "R&D Collaboration" achieves a larger success probability of "Patent Registration" and "Sales."

Effects of Acculturative Stress and Emotional Control on Depression/Anxiety in Children from Multicultural Families: Mediating Effects of Social Support (문화적응스트레스 및 정서조절이 다문화가정 아동의 우울/불안에 미치는 영향 : 사회적 지지 매개효과를 중심으로)

  • Woo, Hee-Jung
    • The Korean Journal of Community Living Science
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    • v.26 no.3
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    • pp.551-563
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    • 2015
  • This study examines the mediating effects of social support on 1) the relationships between acculturative stress and depression/anxiety and 2) the relationships between emotional control and depression/anxiety in children from multicultural families. Pearson's correlations between variables were analyzed, and hierarchical regression analyses were conducted to identify direct and indirect effects of acculturative stress, emotional control, and social support on children's depression/anxiety. The sample included a total of 199 primary school students in grades 3 to 6 who lived in the Gwangju or Chonnam regions of Korea. First, there were positive correlations between acculturative stress and depression/anxiety and negative correlations between emotional control and social support. Second, social support from both peers and teachers partially mediated the relationships between acculturative stress and depression/anxiety. Third, social support from peers fully mediated the relationships between emotional control and depression/anxiety, and that from teachers partially mediated these relationships. The results suggest that social support from peers and teachers may reduce depression/anxiety in multicultural children as a mediating variable.

A Plan for Cooperation in Fisheries between South and North Korea for Unification in the 21st Century (21세기(世紀) 통일기반(統一基盤) 구축(構築)을 위한 수산협력(水産協力) 방안(方案) - 수산물교역을 중심으로 -)

  • Pak, Myong-Sop
    • THE INTERNATIONAL COMMERCE & LAW REVIEW
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    • v.14
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    • pp.323-348
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    • 2000
  • Facing the current difficulties of fisheries industry nationally and internationally, economic cooperations between South and North Korea are needed urgently. Applying the process of economic integration to fisheries sector of separated nation, cooperation processes are divided as follows; (1) indirect and direct fisheries trade, (2) reciprocal use of fishing grounds, (3) joint venture in fisheries sector, (4) free movement of production factors and common fisheries policy. Here, fisheries trade falls under economic interchange stage. Reciprocal use of fishing ground and fisheries joint venture come in economic cooperation stage. Finally. free factor movement and common fisheries policy are related with economic integration stage. This paper investigates the schemes for fisheries cooperation between South and North Korea in preparation for a unified Korea, focusing on fisheries trade. The paper is composed of 5 chapters. Chapter 2 discusses structure and characteristics of North Korea trade, and trade situation between South and North Korea. Then, the present condition of North Korea fisheries industry and fisheries trade trend between South and North Korea are presented in chapter 3. Next, chapter 4 tackles the most common problems encountered in fisheries trade between South and North Korea, and the devices and schemes to raise fisheries trade between South and North Korea. Finally, chapter 5 summarizes and concludes the research results.

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A Comparison of Women's Basic Pattern Using 3D Scanner - Between the Bunka and the Secoli Patterns - (3D scanner를 이용한 여성복 원형의 착의공극량 비교 - 신문화식과 세꼴리식 -)

  • Choi, Young-Lim;Kim, Hee-Eun
    • Fashion & Textile Research Journal
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    • v.6 no.6
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    • pp.749-755
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    • 2004
  • This paper was conducted to compare the methods of women's basic pattern and the problems by analyzing the space between skin and clothing using 3D scanner and thereupon, proposed the solutions. The Bunka pattern of Japan Bunka Women's University(Bunka) and the Secoli pattern of Italy istituto carlo secoli(Secoli) were used. The subject who has nearly the same body size with N type of National anthropometric survey of Korea in 1997 was picked out. In the result of analyzing the space between skin and clothing of each pattern by 3D Scanner, there exist significant differences in the chest and bust parts. The Bunka has more space than the Secoli at bust part, especially between bust points. Because the Bunka has the bust dart which was made from only the bust girth, it couldn't reflect the difference of each human body. Whereas the Secoli has the bust dart which gave a consideration the difference between the bust girth and the chest girth, it has more even space between skin and clothing.

The Relationship between Body Mass Index(BMI), Adipocyte Size and Leptin and Angiotensin II Secretion in Human Adipose Tissue

  • Heo Young-Ran;Moustaid-Moussa Naima
    • Journal of Community Nutrition
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    • v.8 no.2
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    • pp.69-75
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    • 2006
  • Adipose tissue has now been recognized as a rich source of metabolically active molecules that include leptin and angiotensinogen (AGT), the precursor of angiotensin II (Ang II). Both of which have been implicated in the pathogenesis of metabolic alteration and hypertension associated with obesity. In this study, we examined the relationship between body mass index (BMI), adipocyte size, leptin, Ang II secretion and mRNA expression in human adipose tissue obtained from female subjects. Leptin and Ang II were analyzed using specific radioimmunoassay kits following a 48hour tissue culture. Leptin and Ang II secretion varied from 1.4 - 72.1ng/g and 0.8 - 57.3pg/g of tissue respectively. These large individual variations limit significant correlation between BMI, leptin and Ang II secretion. Ang II secretion was significantly higher in the obese than the non-obese (p < 0.05) and positively correlated with BMI. However, no difference in leptin secretion between the obese and the non-obese was observed and leptin secretion showed negative correlation with BMI. No difference in leptin and AGT mRNA expression in adipose tissue between the obese and the non-obese was observed. Although several limitations of this study, we found increased Ang II secretion in obese patients compared with non-obese patients, and positive correlation between AGT and BMI. Observed difference in AGT expression between the obese and the non-obese in this study might be of importance in relation with obesity related hypertension. (J Community Nutrition 8(2): 69-75, 2006)

A STUDY OF CORRELATION BETWEEN HISTORICAL ASTRONOMICAL RECORDS AND POLITICAL EVENTS (고대 천문기록과 정치적 환경과의 상관관계 연구 - 유성과 유성우 기록을 중심으로 -)

  • Yang, Hong-Jin;Choi, Goeun
    • Publications of The Korean Astronomical Society
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    • v.27 no.5
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    • pp.411-418
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    • 2012
  • We study the correlation between distributions of astronomical records and historical events using historical meteor (shower) records. In Korean chronicles, planets and meteor (shower) records are the most abundant astronomical phenomena. And they represent a general tendency of the number distribution of whole astronomical observations. We examine the correlation for the number distribution between meteors (showers) and planets during A.D. 1200-1700 and find that both records have a similar distribution. We classify historical events into three grades according to the social impact, and investigate the correlation between distributions of meteor (shower) records with social events, such as, new king's accession to the throne, foreign invasions, and domestic turmoils. From the statistical analysis, we cannot find any correlation between the meteor (shower) records and the political events. Therefore, we conclude that Korean historical records have not been influenced by the political events. We also examine the correlation between Chinese and Japanese meteor (shower) records and political events for A.D. 1200-1700, respectively, but cannot find any correlations between them.

A Philological study on the clinical application of Tong's acupuncture by the principle of mutual communication between organ and bowel. (장부상통의 원리를 이용한 동씨기혈(董氏奇穴)의 임상활용에 관한 문헌고찰(文獻考察))

  • Jeong, Neon-Sik;Yim, Yun-Kyoung
    • Korean Journal of Acupuncture
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    • v.22 no.3
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    • pp.199-209
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    • 2005
  • Objectives & Methods : This study aims to investigate the application of the principle of the mutual communication between organ and bowel(臟腑相通) on Tong's acupuncture. We classified the frequently used Tong's acupuncture points according to the principle of the mutual communication between organ and bowel. Results & Conclusions : Considering the locations and indications of the most frequently used points among the 740 master Tong's acupuncture points, we could reach the following conclusions; 1. The chief virtues of 66 master Tong's acupuncture points could be explained by the principle of mutual communication between organ and bowel. 2. Among the relationships of mutual communication between organ and bowel, the most frequently applied relationship was relationship which applied to 16 master Tong's acupuncture points, and the , , , , and followed. 3. Considering the body regions, 13 out of 66 master Tong's acupuncture points which the relationship of mutual communication between organ and bowel was applied to, were located at the 1-1 region, and the same number at the U region, the others were at the 7-7, 3-3, 2-2, 4-4, 10-10, 6-6, 5-5 regions in the order of the number of the points, and none at the 9-9 region.

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Influential Factors of Difference between Actual Obesity and Perceptional Obesity among Korean Adolescents (청소년의 실제 비만도와 인지된 비만도 차이에 영향을 주는 요인)

  • Nam, Su-Jung;Park, Jong-Ho
    • Korean Journal of Human Ecology
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    • v.24 no.5
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    • pp.701-712
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    • 2015
  • This study analyses "Survey of Health and Behavior of Children and Adolescents" which is conducted by National Youth Policy Institute that investigated influential factors in difference between actual obesity and perceptional obesity. GLM (Generalized Linear Mode) was carried out to estimate the effects on the eating habits and physical activities and multinomial logit analysis was carried out to examine the influential factors in difference between actual, obesity and perceptional obesity. The results of this study are shown as follows. First 72.0% of total respondents showed the congruence between actual obesity and perceptional obesity and 24.6% of total respondents perceived them fatter than actual. The remaining 3.5% perceived them thinner than actual. Second, the main effects of actual obesity and perceptional obesity on eating habits were statistically significant, but interaction effect between them was not statistically significant. The main effects of actual obesity and perceptional obesity on physical activities and interaction effect between them were all statistically significant. Third, the influential factors in difference between actual obesity and perceptional obesity were gender, age, school record, education of parents, subjective economic status, and living together with family.

A Study on the Structural Methods between Purlin and Beam at Wooden Architecture in Joseon Dynasty (조선시대 목조건축 도리와 보의 결구방법에 관한 연구)

  • Jung, Yun-Sang
    • Journal of architectural history
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    • v.16 no.6
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    • pp.87-100
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    • 2007
  • This study examines on the structural Methods between purlin and beam at Wooden Architecture in Joseon Dynasty($1372{\sim}1910$). Through the investigation, it is verified that the structural methods between purlin and beam is the technique utilizing tenon joint(통장부맞춤), Sungeoteok joint(숭어턱맞춤), dovetailed tenon joint(주먹장맞춤). And the methods of tenon joint is followed by the Sungeoteok joint, which is used in the buildings after middle Joseon dynasty. The method of tenon joint(통장부맞춤) is to connect the beam with the purlin by carving out the head of the beam as '一' shape. And the structural methods between Janghyeo(장혀, timber under purlin) and beam is halved joint(반턱맞춤) and tenon joint (통장부맞춤). The buildings in late Goryeo Dynasty and Joseon Dynasty adopted the method of tenon joint between purlin and beam. The method of Sungeoteok joint is to connect the beam with the purlins by carving out the head of the beams '凸' shape. And the structural methods between Janghyeo and beams is halved joint(반턱맞춤) and tenon joint(통장부맞춤), the method of tenon and step joint(통장부턱맞춤), dovetailed joint between beam and Janghyeo to increase the security of shear force.

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A Study on the Marginal Fit of Dental Prosthesis According to the W/P Ratio of Investment (매몰재의 혼수비가 치관 보철물 변연의 적합성에 미치는 영향에 관한 연구)

  • Hwang, Kyung-Sook
    • Journal of Technologic Dentistry
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    • v.18 no.1
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    • pp.67-72
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    • 1996
  • This test is verifying for influence of W/P ratio of investment upon dental prosthesis Firstly we made 40 MOD die and divide 4 groups, each group take 0.2 different w/p ratio grade such as 0.35, 0.37, 0.39 and 0.41. The method of data analysis applied were by ANOVA, Tukey test and Mann-Whiney and Kruskal Wallis test. The finding of this study were as follows : 1. The 0.37 w/p ratio group showed most accurte margin due to $15.8{\mu}m$ gap between margin and die which keep up with manufacture's instruction and 0.35 w/p ratio group was followed as second accuracy group o 새 $48.3{\mu}m$ gap between margin and die, 0.39 w/p ratio group showed $101{\mu}m$ gap and 0.41 w/p ratio group showed $129.8{\mu}m$ gap. 2. As to the relationship of the margin accuracy between 4 different grade of w/p ratio groups, each group was statistically significant(P<0.01). Also the all groups were statistically significant except between 0.35 and 0.37 groups between 0.39 and 0.41 groups, and between 0.35 and 0.39 groups. 3. A consequence of Mann-Whitney & Kruskal-Wallis test for marginal accuracy between 4 different grade of w/p ratio was statistically significant as same as above ANOVA test result. Also Tukey test for verifying similarity from each group showed same as above.

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